Disassembly-free adjustable ground anchor for horizontal directional drilling machine and use method of disassembly-free adjustable ground anchor

Abstract

The invention provides a disassembly-free adjustable ground anchor for a horizontal directional drilling machine and a using method thereof.The disassembly-free adjustable ground anchor is characterized by comprising a ground anchor inner sleeve, a guide pipe is fixedly connected to the middle of the ground anchor inner sleeve, the guide pipe is slidably sleeved with a motor frame guide frame, and the motor frame guide frame is connected with a ground anchor motor frame through a fixing assembly; a rotary motor is erected in the ground anchor motor frame, the rotary motor is connected with a ground anchor rod, and the ground anchor rod is connected with a drilling tool bit; after operation is completed, the ground anchor rod and the drill bit can be completely retracted above the ground through the ground anchor oil cylinder, complete machine transition can be achieved without disassembling core components such as the ground anchor rod and the drill bit, disassembly-free operation is truly achieved, and the technical problems that a traditional ground anchor is tedious in disassembly and assembly and time-consuming in transition are thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of anchoring equipment for horizontal directional drilling rigs, and in particular to a non-removable adjustable ground anchor for horizontal directional drilling rigs and its usage method. Background Technology

[0002] Horizontal directional drilling rigs are the core equipment for trenchless pipeline laying. During construction, the rig's pullback and drilling operations generate significant reaction forces and torques. Ground anchors are needed to firmly anchor the rig to the ground to prevent displacement or tilting, thus ensuring construction accuracy and operational safety.

[0003] The ground anchors that are currently used with horizontal directional drilling rigs are mostly fixed structures. The anchor point position, anchoring depth and angle are all preset values. During installation, they need to be rigidly connected to the drilling rig chassis through multiple sets of bolts. When disassembling and moving, the bolts need to be disassembled one by one. Not only is the disassembly and assembly process cumbersome, time-consuming and labor-intensive, but it also requires the use of professional disassembly and assembly tools, which greatly reduces the efficiency of continuous construction at multiple anchor points. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a portable and easy-to-transport adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, and a method for using the same.

[0005] This invention provides a non-removable adjustable ground anchor for horizontal directional drilling rigs and its usage method. The anchor includes an inner sleeve, a guide tube fixedly connected to the center of the inner sleeve, a motor frame guide frame slidably sleeved outside the guide tube, a ground anchor motor frame connected to the motor frame guide frame via a fixing assembly, a rotary motor mounted inside the ground anchor motor frame, the rotary motor connected to the ground anchor rod, the ground anchor rod connected to the drilling head, the top of the motor frame guide frame hinged to the piston rod of the ground anchor cylinder, and the cylinder body of the ground anchor cylinder hinged to the inner sleeve.

[0006] The cylinder body of the ground anchor cylinder is hinged to the inner sleeve of the ground anchor via a cotter pin and a pin shaft, and the piston rod of the ground anchor cylinder is hinged to the top of the motor frame guide frame via a cotter pin and a pin shaft.

[0007] The bottom of the inner sleeve of the ground anchor is connected to the external machine through a spacer and bolts.

[0008] The front and rear side walls of the ground anchor motor frame are connected to baffles. The middle of the baffle and the ground anchor motor frame body are respectively provided with pin holes. The bottom and top of the motor frame guide frame are respectively provided with pin holes. The upper part of the baffle is provided with threaded holes.

[0009] The fixing component includes a pin, a pin retaining plate, a flat washer, and a hex socket screw. The pin retaining plate is connected to the baffle through the flat washer and the hex socket screw. The pin retaining plate is engaged with the pin. By inserting the pin into the pin hole, the ground anchor motor frame and the motor frame guide frame are connected together.

[0010] The outer wall of the guide tube is provided with a guide protrusion, and the inside of the motor frame guide frame is provided with a groove corresponding to the guide protrusion.

[0011] The method for applying this device to the drilling rig host in horizontal directional drilling includes the following steps: Step 1: Based on the drilling rig model, drilling depth and geological conditions of the horizontal directional drilling project, determine the location, quantity and bearing capacity of the ground anchors. The location should avoid the influence of existing underground pipelines, obstacles and drilling trajectory, and should correspond to and match the stress points of the drilling rig main unit. Step 2: Clear debris from the ground at the installation location, excavate the anchor installation pit according to the preset specifications, place the anchor body into the pit, adjust the horizontal and vertical of the anchor, and backfill and compact the pit with a fixing medium suitable for the geology to form a stable connection between the anchor and the foundation, ensuring that the anchor's bearing capacity meets the stress requirements of drilling and pullback operations. Step 3: Secure the feed mechanism and pullback mechanism of the drilling rig main unit to the force-bearing end of the ground anchor using special connectors. Check the connection strength and sealing of the connectors. Start the drilling rig for no-load testing to verify the connection stability between the ground anchor and the drilling rig, ensuring that there is no loosening or displacement. Step 4: Throughout the entire process of horizontal directional drilling, including pilot hole drilling, borehole enlargement, and pipeline pullback, monitor the stress state, displacement, and foundation stability of the ground anchor in real time. Adjust the load on the ground anchor according to changes in drilling parameters to ensure that the ground anchor is always within the preset bearing range and to avoid loosening of the ground anchor or settlement of the foundation due to overload. Step 5: After the horizontal directional drilling operation is completed, disassemble the ground anchor motor frame and motor frame guide frame to retract the ground anchor cylinder. Then, reinstall and fix the ground anchor cylinder. The retracted ground anchor cylinder will bring the ground anchor rod out of the ground, and the entire horizontal directional drilling rig can be moved. The beneficial effects of this invention are as follows: (1) This device achieves the lifting and lowering of the ground anchor rod and the drill bit by driving the ground anchor cylinder, and drives the drill bit to rotate with the rotary motor, forming a collaborative operation structure of hydraulic lifting and power rotation, which automatically completes the underground drilling and anchoring of the ground anchor rod and the above-ground retrieval action, replacing the traditional manual drilling and disassembly operation of the ground anchor, greatly reducing manpower input and operation procedures. (2) After the operation is completed, the ground anchor rod and drill bit can be completely retracted to the ground through the ground anchor cylinder. The whole machine can be transferred without disassembling the ground anchor rod, drill bit and other core components, which truly realizes the non-disassembly operation and completely solves the technical pain points of the traditional ground anchor being cumbersome to disassemble and relocate. Meanwhile, the retracted ground anchor rod and the drill bit bonding device body significantly reduce the transportation height of the ground anchor device and even the entire horizontal directional drilling rig, optimize the spatial layout during equipment transportation, and improve the convenience of equipment relocation and transportation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the piston rod of the ground anchor cylinder of the present invention being lifted up; Figure 2 This is a schematic diagram of the structure of the piston rod of the ground anchor cylinder of the present invention being lifted up; Figure 3 This is a schematic diagram of the connection structure of the fixing component of the present invention; Figure 4 This is a schematic diagram of the piston rod retraction structure of the ground anchor cylinder of the present invention.

[0013] Reference numerals in the attached diagram: 1-Inner sleeve of ground anchor; 2-Ground anchor rod; 3-Ground anchor cylinder; 4-Motor frame guide frame; 5-Ground anchor motor frame; 6-Rotary motor; 7-Pin shaft; 8-Pin shaft clamping plate; 9-Baffle; 10-Guide tube; 11-Guide convex piece; 12-Drilling head; 13-Cotter pin; 14-Pin shaft; 15-Pin hole; 21-Spacer; 22-Bolt. Detailed Implementation

[0014] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other. Example 1

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings.

[0018] like Figure 1-4 As shown, the present invention provides a non-removable adjustable ground anchor for horizontal directional drilling rigs and its usage method. The anchor includes an inner ground anchor sleeve 1, a guide tube 10 fixedly connected to the middle of the inner ground anchor sleeve 1, a motor frame guide frame 4 slidably sleeved on the outside of the guide tube 10, a ground anchor motor frame 5 connected to the motor frame guide frame 4 via a fixing assembly, a rotary motor 6 mounted inside the ground anchor motor frame 5, the rotary motor 6 connected to the ground anchor rod 2, the ground anchor rod 2 connected to the drilling head 12, the top of the motor frame guide frame 4 hinged to the piston rod of the ground anchor cylinder 3, and the cylinder body of the ground anchor cylinder 3 hinged to the inner ground anchor sleeve 1.

[0019] The cylinder body of the ground anchor cylinder 3 is hinged to the ground anchor inner sleeve 1 via cotter pin 13 and pin 14, and the piston rod of the ground anchor cylinder 3 is hinged to the top of the motor frame guide frame 4 via cotter pin 13 and pin 14.

[0020] The bottom of the inner sleeve 1 of the ground anchor is connected to the external machine through the spacer 21 and bolt 22.

[0021] The front and rear side walls of the ground anchor motor frame 5 are connected to baffles 9. The middle of the baffles 9 and the frame of the ground anchor motor frame 5 are respectively provided with pin holes 15. The bottom and top of the motor frame guide frame 4 are respectively provided with pin holes 15. The upper part of the baffles 9 is provided with threaded holes.

[0022] The fixing components include a pin 7, a pin retaining plate 8, a flat washer, and a hex socket screw. The pin retaining plate 8 is connected to the baffle 9 through the flat washer and the hex socket screw. The pin retaining plate 8 is engaged with the pin 7. By inserting the pin 7 into the pin hole 15, the ground anchor motor frame 5 and the motor frame guide frame 4 are connected together.

[0023] The outer wall of the guide tube 10 is provided with a guide protrusion 11, and the inside of the motor frame guide frame 4 is provided with a groove corresponding to the guide protrusion 11. Example 2

[0024] The method for applying this device to the drilling rig host in horizontal directional drilling includes the following steps: Step 1: Based on the drilling rig model, drilling depth and geological conditions of the horizontal directional drilling project, determine the location, quantity and bearing capacity of the ground anchors. The location should avoid the influence of existing underground pipelines, obstacles and drilling trajectory, and should correspond to and match the stress points of the drilling rig main unit. Step 2: Clear debris from the ground at the installation location, excavate the anchor installation pit according to the preset specifications, place the anchor body into the pit, adjust the horizontal and vertical of the anchor, and backfill and compact the pit with a fixing medium suitable for the geology to form a stable connection between the anchor and the foundation, ensuring that the anchor's bearing capacity meets the stress requirements of drilling and pullback operations. Step 3: Secure the feed mechanism and pullback mechanism of the drilling rig main unit to the force-bearing end of the ground anchor using special connectors. Check the connection strength and sealing of the connectors. Start the drilling rig for no-load testing to verify the connection stability between the ground anchor and the drilling rig, ensuring that there is no loosening or displacement. Step 4: Throughout the entire process of horizontal directional drilling, including pilot hole drilling, borehole enlargement, and pipeline pullback, monitor the stress state, displacement, and foundation stability of the ground anchor in real time. Adjust the load on the ground anchor according to changes in drilling parameters to ensure that the ground anchor is always within the preset bearing range and to avoid loosening of the ground anchor or settlement of the foundation due to overload. Step 5: After the horizontal directional drilling operation is completed, disassemble the ground anchor motor frame and motor frame guide frame to retract the ground anchor cylinder. Then, reinstall and fix the ground anchor cylinder. The retracted ground anchor cylinder will bring the ground anchor rod out of the ground, and the entire horizontal directional drilling rig can be moved. Example 3

[0025] When the present invention is in operation: the inner sleeve 1 of the ground anchor is fixed to the horizontal directional drilling machine by bolts 22, and the ground anchor motor frame 5 is fixed to the bottom of the motor frame guide frame 4 by four pins 7 on both sides. At the same time, the pin clamping plate 8 is used to clamp the annular groove of the pin 7 to prevent the pin 7 from moving axially. The ground anchor motor frame 5 is equipped with a rotary motor 6 and a ground anchor rod 2. The top pin 14 of the piston rod of the ground anchor cylinder 3 is hinged to the motor frame guide frame 4, and the cylinder body of the ground anchor cylinder 3 is hinged to the ground anchor inner sleeve 1 through the pin 14. By extending and retracting the ground anchor cylinder 3, the motor frame guide frame 4 can be driven to slide up and down along the guide tube 10 of the ground anchor inner sleeve 1. At the same time, the rotary motor 6 drives the ground anchor rod 2 to rotate. The bottom of the ground anchor rod 2 is equipped with a drilling head. Under the combined action of extending and retracting the ground anchor cylinder 3 and rotating the rotary motor 6, the ground anchor rod 2 can be drilled into the ground and retracted to the surface. Example 4

[0026] In the transportation state of this invention: the piston rod of the ground anchor cylinder 3 retracts until the drilling head 12 at the bottom of the ground anchor rod 2 touches the ground, the internal hex screw on the baffle 9 is loosened, the pin clamping plate 8 is lifted to the highest position, and then tightened with internal hex screw; Remove the four pins 7 on both sides of the ground anchor motor bracket 5, retract the piston rod of the ground anchor cylinder 3 until the four pin holes on the ground anchor motor bracket 5 are aligned with the four pin holes 15 on the top of the motor bracket guide bracket 4, then insert the four pins 7 into the pin holes of the motor bracket guide bracket 4 and the ground anchor motor bracket 5, finally lower the pin retainer plate 8, tighten the hex socket screws, and lock the pins 7 to prevent axial movement.

[0027] Extend the ground anchor cylinder 3 slightly so that the ground anchor rod 3 is a certain distance away from the ground. At this time, the overall height of the ground anchor is reduced, which also reduces the overall transportation height of the machine, making it easier to transport the whole machine.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The various components mentioned in this invention are common technologies in the existing field. 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 the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A non-removable adjustable ground anchor for horizontal directional drilling rigs, characterized in that... The device includes an inner sleeve for ground anchors, a guide tube fixedly connected to the middle of the inner sleeve, a motor frame guide frame slidably sleeved on the outside of the guide tube, a ground anchor motor frame connected to the motor frame guide frame via a fixing component, a rotary motor mounted inside the ground anchor motor frame, the rotary motor connected to the ground anchor rod, the ground anchor rod connected to the drilling head, the top of the motor frame guide frame hinged to the piston rod of the ground anchor cylinder, and the cylinder body of the ground anchor cylinder hinged to the inner sleeve for ground anchors.

2. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The cylinder body of the ground anchor cylinder is hinged to the inner sleeve of the ground anchor via a cotter pin and a pin shaft, and the piston rod of the ground anchor cylinder is hinged to the top of the motor frame guide frame via a cotter pin and a pin shaft.

3. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The bottom of the inner sleeve of the ground anchor is connected to the external machine through a spacer and bolts.

4. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The front and rear side walls of the ground anchor motor frame are connected to baffles. The middle of the baffle and the ground anchor motor frame body are respectively provided with pin holes. The bottom and top of the motor frame guide frame are respectively provided with pin holes. The upper part of the baffle is provided with threaded holes.

5. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The fixing component includes a pin, a pin retaining plate, a flat washer, and a hex socket screw. The pin retaining plate is connected to the baffle through the flat washer and the hex socket screw. The pin retaining plate is engaged with the pin. By inserting the pin into the pin hole, the ground anchor motor frame and the motor frame guide frame are connected together.

6. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The outer wall of the guide tube is provided with a guide protrusion, and the inside of the motor frame guide frame is provided with a groove corresponding to the guide protrusion.

7. The adjustable ground anchor for horizontal directional drilling rigs that does not require disassembly, as described in claim 1, is characterized in that... The method for applying this device to the drilling rig host in horizontal directional drilling includes the following steps: Step 1: Based on the drilling rig model, drilling depth and geological conditions of the horizontal directional drilling project, determine the location, quantity and bearing capacity of the ground anchors. The location should avoid the influence of existing underground pipelines, obstacles and drilling trajectory, and should correspond to and match the stress points of the drilling rig main unit. Step 2: Clear debris from the ground at the installation location, excavate the anchor installation pit according to the preset specifications, place the anchor body into the pit, adjust the horizontal and vertical of the anchor, and backfill and compact the pit with a fixing medium suitable for the geology to form a stable connection between the anchor and the foundation, ensuring that the anchor's bearing capacity meets the stress requirements of drilling and pullback operations. Step 3: Secure the feed mechanism and pullback mechanism of the drilling rig main unit to the force-bearing end of the ground anchor using special connectors. Check the connection strength and sealing of the connectors. Start the drilling rig for no-load testing to verify the connection stability between the ground anchor and the drilling rig, ensuring that there is no loosening or displacement. Step 4: Throughout the entire process of horizontal directional drilling, including pilot hole drilling, borehole enlargement, and pipeline pullback, monitor the stress state, displacement, and foundation stability of the ground anchor in real time. Adjust the load on the ground anchor according to changes in drilling parameters to ensure that the ground anchor is always within the preset bearing range and to avoid loosening of the ground anchor or settlement of the foundation due to overload. Step 5: After the horizontal directional drilling operation is completed, the ground anchor motor frame and motor frame guide frame are disassembled to allow the ground anchor cylinder to retract. The ground anchor cylinder is then reinstalled and fixed. The retracted ground anchor cylinder will bring the ground anchor rod out of the ground, and the entire horizontal directional drilling rig can be moved together.

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