Non-excavation type grounding body laying machine and laying method

Abstract

The invention relates to a trenchless grounding body laying machine and laying method, and the machine comprises a supporting system, a drilling driving system which is connected to the supporting system in a front-back sliding manner, a drilling execution system which is installed on the drilling driving system, and a feeding system which drives the drilling driving system to move front and back. The drilling driving system comprises a chuck and a drilling motor driving the chuck to rotate, the drilling execution system comprises a hollow drill rod penetrating through the chuck and an openable drill bit fixedly connected to the front end of the hollow drill rod, and the openable drill bit comprises a hollow drill bit body and a tool bit hinged to the hollow drill bit body. When the tool bit is in a closed state, the tool bit blocks the center hole of the hollow drill bit body, when the tool bit swings outwards to enter an open state, the tool bit avoids the center hole of the hollow drill bit body, the grounding body is inserted from an inner hole of the hollow drill rod, the tool bit of the openable drill bit is jacked open, and the grounding body is laid to a preset position. And the laying efficiency of the grounding body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission and transformation, and in particular to a trenchless grounding body laying machine and a laying method. Background Art

[0002] Grounding electrodes are a common safety feature in electrical engineering. Their primary function is to ensure the safe operation of electrical equipment and prevent electrical accidents. Existing methods for installing grounding electrodes typically use open excavation, requiring manual or mechanical excavation. This method not only requires a large amount of excavation and is labor-intensive, but also disturbs the surrounding soil, negatively impacting the environment. Therefore, there is an urgent need to design an efficient trenchless grounding electrode installation machine that can minimize soil disturbance, reduce labor intensity, and improve grounding electrode installation efficiency. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a trenchless grounding body laying machine and a laying method.

[0004] The present invention is achieved through the following technical scheme, which provides a trenchless grounding body laying machine, including a support system, a drilling drive system slidably connected to the support system in front and back, a drilling execution system installed on the drilling drive system, and a feed system that drives the drilling drive system to move forward and backward. The drilling drive system includes a chuck and a drilling motor that drives the chuck to rotate. The drilling execution system includes a hollow drill rod passing through the chuck and an openable and closable drill bit fixed to the front end of the hollow drill rod. The openable and closable drill bit includes a hollow drill bit body and a cutter head hinged on the hollow drill bit body. When the cutter head is in a closed state, the center hole of the hollow drill bit body is blocked. When the cutter head swings outward to enter an open state, it avoids the center hole of the hollow drill bit body.

[0005] The hollow drill rod in this solution adopts a hollow structure, which makes it easy to insert the grounding body directly from the middle during the laying process. The openable drill bit consists of a cutter head and a hollow drill bit body. The cutter head is connected to the hollow drill bit body through a hinged structure to form an openable structure. The cutter head is in a closed state during drilling. After the drilling is completed, the grounding body is inserted from the inner hole of the hollow drill rod, and the cutter head of the openable drill bit is pushed open, so that the grounding body is laid to the preset position, thereby avoiding the problem of the grounding body being unable to be inserted due to the collapse of the hole during the drill rod withdrawal process.

[0006] As an optimization, a magnet is fixedly connected to the hollow drill bit body. The magnet in this solution is used to attract the cutter head, so that the cutter head is always closed during the drill bit's movement in the soil.

[0007] As an optimization, the support system includes a frame and a plurality of running wheels installed at the bottom of the frame. The frame in this solution is used to support the entire laying machine and fix other mechanisms, and the running wheels are convenient for transporting the laying machine because they support the frame.

[0008] As an optimization, the drilling motor drives the chuck to rotate via a gear assembly, which includes a passive gear fixed to the chuck and a driving gear fixed to the drilling motor shaft. In this solution, the driving gear and the passive gear mesh to achieve power transmission and simultaneously achieve the effect of reducing speed and increasing torque.

[0009] As an optimization, the feed system includes sprockets axially connected to the front and rear ends of the support system and a feed chain that passes around the two sprockets. The feed motor drives the rear sprocket through a reducer to rotate, and the feed chain is connected to the drilling drive system. In this solution, the feed motor drives the rear sprocket through the reducer to rotate, thereby driving the feed chain to circulate, and the feed chain drives the drilling drive system to move forward and backward.

[0010] A trenchless grounding electrode installation method comprises the following steps: a. Leveling: dig a pit at the preset location, move the laying machine into the pit, and adjust the angle and position of the hollow drill rod; b. Feed: The drilling drive system drives the hollow drill rod to rotate, and the feed system drives the drilling drive system and the hollow drill rod forward, drilling the hollow drill rod horizontally into the soil until it reaches the preset position; c. Laying: Pull the hollow drill rod and the retractable drill bit outward a certain distance from the preset position, then insert the grounding body from the inner hole of the hollow drill rod, push open the cutter head of the retractable drill bit, and lay the grounding body to the preset position; d. Retract the pipe: The feed system drives the drilling drive system and the hollow drill rod to retract, recovers the hollow drill rod and the openable and closable drill bit, and completes the laying of the grounding body.

[0011] As an optimization, when the length of the hollow drill rod is less than the laying depth, multiple hollow drill rods need to be docked. The docking process is as follows: after the hollow drill rod enters a certain depth, the drilling drive system is retracted, and a new hollow drill rod is added to connect it to the previous hollow drill rod.

[0012] The beneficial effects of the present invention are as follows: the trenchless grounding body installation machine and method of the present invention utilize a trenchless installation method, saving labor and improving the efficiency of grounding body installation. Furthermore, the grounding body is inserted through the inner hole of a hollow drill rod, and the cutter head of the retractable drill bit is pushed open to a preset position. This allows the grounding body to be installed first and then the drill rod to be withdrawn, thus avoiding the problem of the hole collapsing during the drill rod withdrawal process, making it impossible to insert the grounding body, and reducing the labor intensity during grounding body installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 A schematic diagram of the structure of the retractable drill bit of the present invention in the open state and the closed state; As shown in the figure: 1. Drilling execution system, 2. Drilling drive system, 3. Support system, 4. Feed system, 5. Openable and closable drill bit, 6. Hollow drill rod, 7. Movable jaws, 8. Chuck body, 9. Gear assembly, 10. Drilling motor, 11. Frame, 12. Travel wheel, 13. Feed motor, 14. Feed chain, 15. Reducer, 16. Cutter head, 17. Magnet, 18. Hollow drill bit body. DETAILED DESCRIPTION

[0014] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0015] like Figures 1 to 4 As shown, a trenchless grounding body laying machine of the present invention includes a drilling execution system 1, a drilling drive system 2, a support system 3 and a feeding system 4.

[0016] The support system 3 is used to support the laying machine; the drilling execution system 1 is installed on the drilling drive system 2 for performing drilling operations; the drilling drive system 2 is used to drive the drilling execution system 1 to perform rotation operations; the drilling drive system 2 slides forward and backward on the support system 3, and the feed system 4 drives the drilling drive system 2 to move forward and backward to complete the drilling operation.

[0017] The support system 3 includes a frame 11 and a plurality of running wheels 12 mounted at the bottom of the frame 11. The frame 11 is used to support the laying machine and fix other mechanisms. In this embodiment, the frame 11 is a horizontally long frame structure, and the running wheels 12 are mounted at the four corners of the frame 11 to support the frame 11 and facilitate transportation of the laying machine.

[0018] The drilling execution system 1 includes a hollow drill rod 6 and an openable drill bit 5 fixed to the front end of the hollow drill rod 6. The hollow drill rod 6 adopts a hollow structure, which facilitates the direct insertion of the grounding body from the middle during the laying process. Two hollow drill rods 6 can be docked to achieve a deeper drilling depth. The docking method can adopt various docking methods such as threaded connection, snap connection, pin connection, etc.

[0019] The retractable drill bit 5 includes a hollow drill bit body 18 and a cutter head 16 hinged on the hollow drill bit body 18. The hollow drill bit body 18 is a hollow structure and is coaxial with the hollow drill rod 6. The outer diameter of the hollow drill bit body 18 is larger than the outer diameter of the hollow drill rod 6. The cutter head 16 is flat and one end is hinged to the hollow drill bit body 18 through a pin. The hinged structure is as shown in FIG. Figure 4As shown, an openable and closable structure is formed. When the cutter head 16 is in the closed state, it blocks the central hole of the hollow drill body 18, thereby achieving the drilling operation. When the cutter head 16 swings outward to enter the open state, it avoids the central hole of the hollow drill body 18. As a result, the grounding element can pass forward through the central hole of the hollow drill body 18.

[0020] A magnet 17 is fixedly connected to the hollow drill bit body 18. It is used to attract the cutter head 16 so that the cutter head 16 is normally closed when the drill bit 5 moves in the soil.

[0021] The drilling drive system 2 is installed on the slide, and the slide is connected to the frame 11 in a forward and backward sliding manner, thereby realizing the forward and backward sliding guidance of the drilling drive system 2. The drilling drive system 2 includes a chuck and a drilling motor 10 that drives the chuck to rotate. The chuck includes a chuck body 8 and multiple movable jaws 7. The multiple movable jaws 7 clamp the hollow drill rod 6. The chuck is rotatably connected to the slide. After the chuck clamps the hollow drill rod 6, the rotation of the hollow drill rod 6 is realized by rotating the chuck.

[0022] A drive motor 10 is fixed to the carriage and provides power. The drilling motor 10 rotates the chuck via a gear assembly 9, which includes a driven gear fixed to the chuck and a driving gear fixed to the shaft of the drilling motor 10. The driving gear has a smaller diameter than the driven gear, which reduces speed and increases torque.

[0023] The feeding system 4 includes a feeding motor 13, a reducer 15, sprockets connected to the front and rear ends of the supporting system 3, and a feeding chain 14 passing around the two sprockets. The feeding motor 13 is fixed at the input end of the reducer 15 for providing power. The reducer 15 is fixed on the frame 11 for matching the rotation speed and transmitting torque. The feeding motor 13 drives the sprocket at the rear end to rotate through the reducer 15. The feeding chain 14 is connected to the drilling drive system 2, thereby driving the drilling drive system 2 to move forward and backward through the circular movement of the feeding chain 14.

[0024] A trenchless grounding electrode installation method comprises the following steps: a. Leveling: dig a pit of a predetermined depth at a preset location, move the laying machine into the pit, and adjust the angle and position of the hollow drill rod 6 to make it in a horizontal position; b. Feeding: The drilling drive system 2 drives the hollow drill rod 6 to rotate, and the feeding system 4 drives the drilling drive system 2 and the hollow drill rod 6 forward, drilling the hollow drill rod 6 horizontally into the soil until it reaches a preset position; When the length of the hollow drill rod 6 is less than the laying depth, multiple hollow drill rods 6 need to be docked. The docking process is as follows: after the hollow drill rod 6 enters a certain depth, the drilling drive system 2 is retracted and a new hollow drill rod 6 is added to connect it with the previous hollow drill rod 6. Of course, c. Laying: Pull the hollow drill rod 6 and the retractable drill bit 5 outward from the preset position to a certain distance. Then, insert the grounding body from the inner hole of the hollow drill rod 6, push open the cutter head 16 of the retractable drill bit 5, and lay the grounding body to the preset position. d. Retract the pipe: the feed system 4 drives the drilling drive system 2 and the hollow drill rod 6 to retract, recovering the hollow drill rod 6 and the openable and closable drill bit 5 to complete the laying of the grounding body.

[0025] The above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies and will not be described in detail here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A trenchless grounding body laying machine, characterized by: The invention comprises a support system (3), a drilling drive system (2) slidably connected to the support system (3) in a front-to-rear manner, a drilling execution system (1) installed on the drilling drive system (2), and a feed system (4) for driving the drilling drive system (2) to move forward and backward. The drilling drive system (2) comprises a chuck and a drilling motor (10) for driving the chuck to rotate. The drilling execution system (1) comprises a hollow drill rod (6) passing through the chuck and an openable drill bit (5) fixed to the front end of the hollow drill rod (6). The openable drill bit (5) comprises a hollow drill bit body (18) and a cutter head (16) hinged to the hollow drill bit body (18). When the cutter head (16) is in a closed state, the center hole of the hollow drill bit body (18) is blocked. When the cutter head (16) swings outward to enter an open state, the center hole of the hollow drill bit body (18) is avoided.

2. The trenchless grounding body laying machine according to claim 1, characterized in that: A magnet (17) is fixedly connected inside the hollow drill bit body (18).

3. The trenchless grounding body laying machine according to claim 1, characterized in that: The support system (3) comprises a frame (11) and a plurality of running wheels (12) mounted on the bottom of the frame (11).

4. The trenchless grounding body laying machine according to claim 1, characterized in that: The drilling motor (10) drives the chuck to rotate via a gear assembly (9), and the gear assembly (9) comprises a passive gear fixedly connected to the chuck and a driving gear fixedly connected to the rotating shaft of the drilling motor (10).

5. The trenchless grounding body laying machine according to claim 1, characterized in that: The feeding system (4) includes sprockets connected to the front and rear ends of the support system (3) and a feeding chain (14) passing around the two sprockets. The feeding motor (13) drives the rear sprocket to rotate through a reducer (15). The feeding chain (14) is connected to the drilling drive system (2).

6. A trenchless grounding electrode installation method, characterized in that: Using the laying machine according to any one of claims 1 to 5 comprises the following steps: a. Leveling: dig a pit at a preset location, move the laying machine into the pit, and adjust the angle and position of the hollow drill rod (6); b. Feeding: the drilling drive system (2) drives the hollow drill rod (6) to rotate, and the feeding system (4) drives the drilling drive system (2) and the hollow drill rod (6) to feed forward, drilling the hollow drill rod (6) horizontally into the soil until it reaches a preset position; c. Laying: Pull the hollow drill rod (6) and the retractable drill bit (5) outwards a certain distance from the preset position, then insert the grounding body from the inner hole of the hollow drill rod (6), push open the cutter head (16) of the retractable drill bit (5), and lay the grounding body to the preset position; d. Retracting the pipe: The feed system (4) drives the drilling drive system (2) and the hollow drill rod (6) to retract, recovering the hollow drill rod (6) and the openable drill bit (5), and completing the laying of the grounding body.

7. A trenchless grounding electrode installation method according to claim 6, characterized in that: When the length of the hollow drill rod (6) is less than the laying depth, multiple hollow drill rods (6) need to be docked. The docking process is as follows: after the hollow drill rod (6) enters a certain depth, the drilling drive system (2) is retracted, and a new hollow drill rod (6) is added to connect it to the previous hollow drill rod (6).

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