A drilling rig power head integrating sonic drilling and high-pressure jetting

Abstract

The present invention relates to the technical field of construction machinery, and specifically to a drilling rig power head integrating sonic drilling and high-pressure rotary spraying. The present invention provides a drilling rig power head integrating sonic drilling and high-pressure rotary spraying, comprising a vibration component, a rotary spraying component, a rotary drive component, a frame and a power head output shaft; the vibration component is provided with a vibration unit; the upper end of the power head output shaft is connected to the vibration component through the thrust bearing; the diverter pipe shaft on the rotary spraying component is connected or separated with the power head output shaft through a coupling device; the power head output shaft is connected to the rotary drive shaft of the rotary drive component through a spline. The present invention can realize the integration of sonic drilling and high-pressure rotary spraying functions on a power head, and the switching is convenient, which is conducive to carrying out pile foundation engineering operations in a narrow space.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, in particular to a drilling rig power head integrating sonic drilling and high-pressure rotary spraying. Background Art

[0002] In the pile foundation reinforcement construction involved in the construction process of improving the function of the shallow underground space of existing buildings, the foundation bearing capacity is often improved by small lead holes and rotary grouting pile expansion technology. Due to the small construction space, if single-function bored piles and rotary grouting piles are used for construction, there is a prominent problem of difficulty in placing the equipment in the space. Therefore, there is an urgent need for a drilling rig power head that can simultaneously realize drilling and rotary grouting functions in a small space. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problems existing in the prior art and provide a drilling rig power head integrating sonic drilling and high-pressure rotary spraying, which can realize the integration of sonic drilling and high-pressure rotary spraying functions on one power head, is easy to switch, and is conducive to carrying out pile foundation engineering operations in a small space.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A drilling rig power head integrating sonic drilling and high-pressure rotary jetting, comprising a vibration component, a rotary jetting component, a rotary drive component, a frame and a power head output shaft; the vibration component, the rotary jetting component and the rotary drive component are all connected to the frame;

[0006] The rotary spray component includes a flow divider and a rotary spray pipe; the flow divider includes a shell and a flow divider pipe shaft; the flow divider pipe shaft is located in the shell; the flow divider pipe shaft is threadedly connected to the rotary spray pipe; the flow divider pipe shaft and the rotary spray pipe are coaxial with the power head output shaft and pass through the inner hole of the power head output shaft; the flow divider pipe shaft is connected or separated from the power head output shaft through a coupling device;

[0007] The excitation component is provided with an excitation unit, and the excitation unit is located on both sides of the center line of the diverter tube axis;

[0008] The rotary drive component comprises a rotary drive shaft, a housing and a bearing;

[0009] The power output shaft is a hollow tubular shaft; the upper end of the power head output shaft is connected to the exciting component through a thrust bearing; the middle section of the power head output shaft is supported on the housing of the rotating drive component through the bearing of the rotating drive component; the power head output shaft and the rotating drive shaft of the rotating drive component are connected through a spline.

[0010] Preferably, the exciting component and the rotary spraying component are elastically connected to the frame; and the rotary driving component is rigidly connected to the frame.

[0011] Preferably, the rotary drive component also includes an end cover oil inlet, a rotary drive shaft oil inlet and a rotary drive shaft oil outlet; a radial rotary drive shaft oil inlet is opened on the upper portion of the rotary drive shaft; a rotary drive shaft oil outlet is opened in the middle portion of the rotary drive shaft; the upper end cover of the rotary drive component is provided with an end cover oil inlet; and a shell oil outlet is provided on the shell.

[0012] Preferably, annular collars are respectively used to seal the upper and lower ends of the power head output shaft and the rotary drive shaft; the annular collars are located on both sides of the power head output shaft.

[0013] Preferably, the annular hoop is made of elastic material.

[0014] Preferably, at least two groups of excitation units are provided.

[0015] Preferably, the coupling device is a set screw.

[0016] Preferably, radial set screws are provided at the docking position between the power head output shaft and the diverter tube shaft; and the diverter tube shaft is flattened on both sides at the position corresponding to the set screws.

[0017] Compared with the prior art, the present invention achieves the following beneficial effects:

[0018] The present invention realizes the integration of sonic drilling and high-pressure rotary jetting functions on one power head, is easy to switch, and is conducive to carrying out pile foundation engineering operations in a narrow space.

[0019] The invention elastically connects the exciting component, the rotary spray component and the frame, thus achieving the technical effect of vibration isolation.

[0020] The rotary drive component of the present invention is rigidly connected to the frame, and the power head output shaft is supported on the rotary drive component housing through a bearing, and is stably supported in the radial direction; the power head output shaft is connected to the exciting component through a thrust bearing, which can transmit the larger axial force generated by the exciting component.

[0021] The rotary drive shaft of the present invention is connected to the output shaft of the power head by a spline, thereby reducing the adverse effect of vibration on the rotary drive component.

[0022] The present invention realizes the connection and separation between the output shaft of the power head and the pipe shaft of the diverter by tightening and loosening the set screw, thereby realizing the functional switching between the sonic drilling and the high-pressure rotary spraying.

[0023] The present invention adopts annular sleeves to seal between the upper and lower ends of the power head output shaft and the rotating drive shaft to prevent the lubricating oil from leaking out, and when the lubricating oil cavity is filled with the lubricating oil, the lower spline is continuously lubricated. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] In the figure, 1. excitation component, 11. excitation unit, 2. rotary spray component, 21. diverter tube shaft, 3. thrust bearing, 4. rotary drive component, 41. rotary drive shaft, 42. end cover oil inlet, 411. rotary drive shaft oil inlet, 412. rotary drive shaft oil outlet, 5. power head output shaft, 6. annular sleeve, 7. set screw. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0027] like Figure 1 As shown, the present invention provides a drilling rig power head integrating sonic drilling and high-pressure rotary jetting, comprising a vibration component 1, a rotary jetting component 2, a rotary drive component 4, a frame and a power head output shaft 5; the vibration component 1, the rotary jetting component 2, and the rotary drive component 4 are all connected to the frame;

[0028] The rotary spray component 2 includes a flow divider and a rotary spray pipe; the flow divider includes a shell and a flow divider pipe shaft 21; the flow divider pipe shaft 21 is located in the shell; the flow divider pipe shaft 21 is threadedly connected to the rotary spray pipe; the flow divider pipe shaft 21 and the rotary spray pipe are coaxial with the power head output shaft 5 and pass through the inner hole of the power head output shaft 5; the flow divider pipe shaft 21 is connected or separated from the power head output shaft 5 through a coupling device;

[0029] The excitation component 1 is provided with an excitation unit 11, and the excitation unit 11 is located on both sides of the center line of the diverter tube axis 21;

[0030] The rotary drive component 4 includes a rotary drive shaft 41, a housing and a bearing;

[0031] The power head output shaft 5 is a hollow tubular shaft; the upper end of the power head output shaft 5 is connected to the exciting component 1 through a thrust bearing 3; the middle section of the power head output shaft 5 is supported on the housing of the rotating drive component 4 through the bearing of the rotating drive component 4; the power head output shaft 5 is connected to the rotating drive shaft 41 of the rotating drive component 4 through a spline.

[0032] As an embodiment of the present invention, the excitation component 1 and the rotary spray component 2 are elastically connected to the frame, and the rotary drive component 4 is rigidly connected to the frame. The elastic connection can play a role in vibration isolation and avoid the adverse effects of vibration on the frame.

[0033] As an embodiment of the present invention, the rotating drive component 4 also includes an end cover oil inlet 42, a rotating drive shaft oil inlet 411 and a rotating drive shaft oil outlet 412; a radial rotating drive shaft oil inlet 411 is opened at the upper portion of the rotating drive shaft 41; a rotating drive shaft oil outlet 412 is opened at the middle portion of the rotating drive shaft; an end cover oil inlet 43 is provided on the upper end cover of the rotating drive component; and a shell oil outlet is provided on the shell.

[0034] As an embodiment of the present invention, annular collars 6 are respectively used to seal the upper and lower ends of the power head output shaft 5 and the rotary drive shaft; the annular collars 6 are located on both sides of the power head output shaft 5 .

[0035] As an embodiment of the present invention, the annular hoop 6 is made of elastic material.

[0036] As an embodiment of the present invention, at least two groups of excitation units 11 are provided. In this embodiment, two groups of excitation units 11 are provided in one plane, which is only a preferred implementation of the present invention. Those skilled in the art can set the number of excitation units 11 as needed.

[0037] As an embodiment of the present invention, the coupling device is a set screw 7. A radial set screw 7 is provided at the docking position between the power head output shaft 5 and the diverter tube shaft 21; the diverter tube shaft is flattened on both sides at the position corresponding to the set screw 7. The connection and separation of the power head output shaft 5 and the diverter tube shaft 21 are achieved by tightening and loosening the set screw 7.

[0038] The respective components and internal connection methods of the excitation unit 11, the rotary spray component 2 and the rotary drive component 4 described in the present invention can be realized by using existing technologies or other technologies well known to those skilled in the art.

[0039] In the present invention, the excitation unit 11 specifically refers to a vibration generator with an eccentric vibration shaft and a power and support device. Usually, the power head is provided with vibration units in pairs, and the vibration form finally obtained is vertical vibration. The exciter includes an excitation unit, a power drive device of the exciter, and an exciter seat that carries the excitation unit and the drive device.

[0040] The rotary spray component 2 includes a diverter and a rotary spray pipe. The diverter includes a shell and a diverter pipe shaft 21. The diverter shell is provided with an inlet for compressed air, water, cement slurry and other media, and a connecting device for the rotary spray component and the equipment frame. The diverter pipe shaft 21 is a hollow tube that can rotate in the shell. The lower part is the medium outlet, and is provided with a pipe thread for connecting the rotary spray pipe. There is a milling flat structure on a section of the shaft above the thread, which can be used to temporarily clamp the diverter pipe shaft 21 to prevent it from rotating when installing the rotary spray pipe. According to the present invention, the above-mentioned milling flat structure is used for switching the connection and separation of the coupling device of the power head output shaft 5 and the diverter pipe shaft 21.

[0041] The splitter pipe shaft 21 can be inserted into the power head output shaft 5 and then connected to other components of the jetting parts. After the splitter pipe shaft 21 is connected to the power head output shaft 5, it can rotate under the drive of the power head output shaft 5, and can also be separated from the rotation by the shaft coupling device. Through this arrangement, the drilling function and the jetting firmware can share power and operate separately.

[0042] The power head output shaft 5 is connected to the exciting component 1 through the thrust bearing 3, and the vibration force of the exciting component can be transmitted to the drill rod to realize vibration drilling; the power head output shaft 5 and the rotating drive shaft 41 are connected by a spline, so that the power head output shaft 5 can rotate under the drive of the rotating drive component 4 and can also make axial movement relative to the rotating drive component 4 to prevent its vibration from causing damage to the rotating drive device.

[0043] Sonic vibration drilling requires a vibration frequency of 90 Hz or more. In the present invention, when the power head is in the vibration drilling working state, the spline connection between the power head output shaft 5 and the rotating drive shaft 41 has high-frequency reciprocating sliding friction in the axial direction, and sufficient lubrication is required to meet the working conditions. Figure 1 As shown, the lubrication scheme of the present invention is to provide an oil pool in the axial motion area of ​​the spline connection, and use forced circulating thin oil for lubrication. A radial rotary drive shaft oil inlet 411 is provided on the upper part of the rotary drive shaft 41, a rotary drive shaft oil outlet 412 is provided in the middle part, and an end cover oil inlet 42 is provided on the upper end cover of the rotary drive gearbox. The lubricating oil enters through the end cover oil inlet 42, one way can lubricate the upper bearing, and the other way enters the gap between the spline connection of the rotary drive shaft 41 and the power head output shaft 5 through the rotary drive shaft oil inlet 411 to provide lubrication for the spline. A part of the lubricating oil entering the spline gap flows into the gearbox housing of the rotary drive component 4 through the rotary drive shaft oil outlet 412, and the other part flows downward into the lower annular hoop 6 to provide lubrication for the lower spline during the flow. The lubricating oil in the lower annular hoop 6 will be squeezed out when the power head output shaft 5 moves up and down relative to the rotary drive shaft 41, and flows out from the rotary drive shaft oil outlet 412, and also enters the gearbox of the rotary drive component 4 to provide lubrication for the gear and the lower bearing.

[0044] It should be noted that in the present invention Figure 1The oil pool of the rotating drive component 4 is not shown.

[0045] The transmission modes of the rotary drive unit and the excitation unit 11 in the present invention can be set by utilizing the existing technology in the art, for example: belt chain transmission, gear transmission.

[0046] The present invention also provides a method for using a drilling rig power head integrating sonic drilling and high-pressure jetting:

[0047] A drilling rig power head integrating sonic drilling and high-pressure rotary jetting can be used in both sonic drilling and high-pressure rotary jetting operations.

[0048] When sonic drilling is performed, the jetting component 2 is not equipped with a jetting pipe. Loosen the set screw 7, loosen the shaft connection between the diverter pipe shaft 21 and the power head output shaft 5, and then connect the drill rod to the lower part of the power head output shaft 5. In this state, the vibration force generated by the excitation unit 11 is transmitted to the power head output shaft 5 through the thrust bearing 3, and the rotary drive component 4 drives the power head output shaft 5 to rotate, sonic drilling can be performed. The jetting component 2 does not work, and the diverter pipe shaft 21 does not rotate with the power head output shaft 5.

[0049] When performing jet grouting, the drill rod is removed from the output end of the power head output shaft 5, and the jet grouting pipe is installed at the lower part of the diverter pipe shaft 21. The set screw 7 is tightened to connect the diverter pipe shaft 21 with the power head output shaft 5, and the jet grouting pipe can be driven to rotate by the rotational power of the power head output shaft 5 to perform jet grouting.

[0050] Through the above conversion, after the drilling is completed, it is possible to quickly switch to rotary grouting and pile expansion operations without moving the drilling rig or re-aligning the hole, which is conducive to carrying out pile foundation engineering operations in a small space.

Claims

1. A drilling rig power head integrating sonic drilling and high-pressure jetting, characterized in that: It includes a vibration component, a rotary spray component, a rotary drive component, a frame and a power head output shaft; the vibration component, the rotary spray component and the rotary drive component are all connected to the frame; The rotary spray component includes a flow divider and a rotary spray pipe; the flow divider includes a shell and a flow divider pipe shaft; the flow divider pipe shaft is located in the shell; the flow divider pipe shaft is threadedly connected to the rotary spray pipe; the flow divider pipe shaft and the rotary spray pipe are coaxial with the power head output shaft and pass through the inner hole of the power head output shaft; the flow divider pipe shaft is connected or separated from the power head output shaft through a coupling device; The excitation component is provided with an excitation unit, and the excitation unit is located on both sides of the center line of the diverter tube axis; The rotary drive component comprises a rotary drive shaft, a housing and a bearing; The output shaft of the power head is a hollow tube shaft; the upper end of the output shaft of the power head is connected to the exciting component through a thrust bearing; the middle section of the output shaft of the power head is supported on the housing of the rotating drive component through the bearing of the rotating drive component; the output shaft of the power head is connected to the rotating drive shaft of the rotating drive component through a spline; At least two groups of excitation units are provided; The coupling device is a set screw; When performing sonic drilling, the jetting component is not installed with the jetting pipe, the set screw is loosened, the shaft connection between the diverter pipe shaft and the power head output shaft is loosened, and then the drill rod is connected to the lower part of the power head output shaft. In this state, the vibration force generated by the excitation unit is transmitted to the power head output shaft through the thrust bearing, and at the same time, the rotary drive component drives the power head output shaft to rotate, sonic drilling is performed, the jetting component does not work, and the diverter pipe shaft does not rotate with the power head output shaft; When performing jet grouting operations, the drill rod is removed from the output end of the power head output shaft, the jet grouting pipe is installed at the lower part of the diverter pipe shaft, and the set screw is tightened to connect the diverter pipe shaft with the power head output shaft, and the rotary power of the power head output shaft is used to drive the jet grouting pipe to rotate to perform jet grouting operations.

2. The drilling rig power head integrating sonic drilling and high-pressure jetting according to claim 1 is characterized in that: The exciting component and the rotary spray component are elastically connected to the frame; and the rotary driving component is rigidly connected to the frame.

3. The drilling rig power head integrating sonic drilling and high-pressure jetting according to claim 1 is characterized in that: The rotary drive component also includes an end cover oil inlet, a rotary drive shaft oil inlet and a rotary drive shaft oil outlet; a radial rotary drive shaft oil inlet is opened on the upper part of the rotary drive shaft; a rotary drive shaft oil outlet is opened in the middle part of the rotary drive shaft; the upper end cover of the rotary drive component is provided with an end cover oil inlet; and a shell oil outlet is provided on the shell.

4. The drilling rig power head integrating sonic drilling and high-pressure jetting according to claim 1 is characterized in that: Annular collars are respectively used to seal the upper and lower ends of the power head output shaft and the rotary drive shaft; the annular collars are located on both sides of the power head output shaft.

5. The drilling rig power head integrating sonic drilling and high-pressure jetting according to claim 4 is characterized in that: The annular hoop is made of elastic material.

6. The drilling rig power head integrating sonic drilling and high-pressure jetting according to claim 1 is characterized in that: A radial set screw is provided at the butt joint position between the power head output shaft and the diverter pipe shaft; the diverter pipe shaft is flattened on both sides at the position corresponding to the set screw.

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