An electric power grounding stake

Abstract

This utility model relates to the field of power grounding piles and discloses a power grounding pile, including a pile body. A screw is threadedly connected to the inner wall of the pile body, and a long rod is fixedly connected to the bottom of the screw. A drill bit is fixedly connected to the bottom of the long rod. An annular groove is provided on the surface of the long rod, and an inclined surface is provided on the surface of the annular groove. An expansion mechanism is provided inside the pile body. The expansion mechanism includes a moving block, which is slidably connected to the inner wall of the pile body. The moving block is elastically connected to the inner wall of the pile body by a spring. A semi-cylinder is fixedly connected to one end of the moving block near the long rod. In this utility model, when the screw is rotated by a turntable, the inclined surface compresses the semi-cylinder as the long rod moves downward, causing the moving block to slide away from the center of the pile body. This pushes the insertion cone to expand outward and insert into the underground soil, increasing the contact area between the pile body and the soil and improving the stability of the grounding pile in soft soil.

Description

Technical Field

[0001] This utility model relates to the field of power grounding piles, and in particular to a power grounding pile. Background Technology

[0002] Grounding piles refer to the foundation piles, support piles, and building piles of buildings. Power transmission lines and related equipment are mostly located outdoors and are susceptible to lightning strikes. Line tripping caused by lightning strikes occurs frequently. In order to protect against lightning strikes, grounding devices need to be installed on transmission lines to conduct the current generated by lightning strikes to the ground and prevent damage to conductors or transmission equipment from lightning voltage. The grounding device needs to be reliably grounded to ensure the normal operation of electrical equipment and personal safety.

[0003] When burying power grounding piles, the general practice is to insert the grounding piles directly into the ground. However, when grounding the grounding device, since most power engineering construction takes place in the field, and the terrain is complex, in some places with loose soil, the contact area of ​​the grounding pile directly inserted into the ground is small, which makes the grounding pile unstable and prone to collapse, reducing the grounding effect of the power transmission line. The installation of grounding piles is easily affected and restricted by the terrain environment, increasing the difficulty of installation. Therefore, a power grounding pile is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a power grounding pile, which aims to improve the problem in the prior art that "the contact area of ​​the grounding pile directly inserted into the ground is small, resulting in unstable grounding piles that are prone to collapse".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a power grounding pile, comprising a pile body, a screw threadedly connected to the inner wall of the pile body, a long rod fixedly connected to the bottom of the screw, a drill bit fixedly connected to the bottom of the long rod, an annular groove provided on the surface of the long rod, an inclined surface provided on the surface of the annular groove, an expansion mechanism provided inside the pile body, the expansion mechanism comprising a movable block, the movable block being slidably connected to the inner wall of the pile body, the movable block being elastically connected to the inner wall of the pile body by a spring, a semi-cylinder fixedly connected to the end of the movable block near the long rod, a cone fixedly connected to the end of the movable block away from the semi-cylinder, and a fixing mechanism provided outside the pile body.

[0006] As a further description of the above technical solution:

[0007] A turntable is fixedly connected to the top of the screw.

[0008] As a further description of the above technical solution:

[0009] The annular groove is used to accommodate the semi-cylinder.

[0010] As a further description of the above technical solution:

[0011] The fixing mechanism includes a fixing plate, which is fixedly connected to the outer wall of the pile.

[0012] As a further description of the above technical solution:

[0013] The fixing mechanism also includes a clamping plate, which is sleeved on the outside of the pile body and positioned above the fixing plate.

[0014] As a further description of the above technical solution:

[0015] The fixing mechanism also includes ground spikes, which pass through the pressure plate and the fixing plate in sequence.

[0016] As a further description of the above technical solution:

[0017] The fixing mechanism also includes a positioning pin, which is fixedly connected to the bottom of the pressure plate and inserted into the top inner wall of the fixing plate.

[0018] As a further description of the above technical solution:

[0019] The fixing mechanism also includes a spring piece, which is disposed on the top of the fixing plate and the top of the spring piece contacts the bottom of the pressing plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the turntable rotates the screw, which in turn drives the long rod and the drill bit to rotate and dig downwards. When the long rod moves downwards, the inclined surface squeezes the semi-cylinder, which causes the moving block to overcome the elastic force of the spring and slide away from the center of the pile. This pushes the insertion cone to expand outwards and insert into the underground soil, increasing the contact area between the pile and the soil and improving the stability of the grounding pile in soft soil.

[0022] 2. In this utility model, the clamping plate and the fixing plate are fixed to the ground by ground nails. The positioning pin is set to ensure that the clamping plate is accurately installed on the top of the fixing plate. The spring contact is in contact with the bottom of the clamping plate in the naturally extended state, providing a certain degree of clamping force, so that the grounding pile can be stably grounded, thereby protecting the safety of personnel and equipment at the construction site. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the overall three-dimensional structure of this utility model;

[0025] Figure 3 This utility model Figure 2 An enlarged 3D structural diagram at point A in the middle;

[0026] Figure 4 This is a three-dimensional exploded view of the fixing mechanism in this utility model.

[0027] Legend:

[0028] 1. Pile body; 2. Screw; 3. Turntable; 4. Long rod; 5. Drill bit; 101. Annular groove; 102. Inclined surface; 103. Moving block; 104. Spring; 105. Semi-cylinder; 106. Insert cone; 10. Expansion mechanism; 11. Fixing mechanism; 111. Fixing plate; 112. Pressing plate; 113. Ground nail; 114. Positioning pin; 115. Spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a power grounding pile, including a pile body 1, which is made of galvanized steel pipe. The surface of the pile body 1 is provided with terminals to facilitate connection between the pile body 1 and the buildings and facilities to be protected, and to facilitate the conduction of lightning current to the ground. A screw rod 2 is threadedly connected to the inner wall of the pile body 1 in a vertical position. A turntable 3 is fixedly connected to the top of the screw rod 2 to facilitate the rotation of the screw rod 2 by the operator. A long rod 4 is fixedly connected to the bottom of the screw rod 2. The outer wall of the long rod 4 contacts the inner wall of the pile body 1. A drill bit 5 is fixedly connected to the bottom of the long rod 4. The surface of the drill bit 5 is provided with spiral patterns. When the drill bit 5 rotates, it can dig into the ground. The drill bit 5 penetrates deep into the ground, which can increase the contact area between the power grounding pile and the ground, thereby ensuring the stability of the grounding effect. An annular groove 101 is provided on the surface of the long rod 4 to accommodate a semi-cylinder 105. An inclined surface 102 is provided on the surface of the annular groove 101.

[0031] Reference Figure 2 , Figure 3An expansion mechanism 10 is provided inside the pile body 1. The expansion mechanism 10 includes a moving block 103, which is slidably connected to the inner wall of the pile body 1. The sliding direction of the moving block 103 is the radial direction of the pile body 1. The moving block 103 is elastically connected to the inner wall of the pile body 1 through a spring 104. The spring 104 applies an elastic force to the moving block 103 in the direction close to the pile body 1. A semi-cylinder 105 is fixedly connected to one end of the moving block 103 near the long rod 4, and an insertion cone 106 is fixedly connected to one end of the moving block 103 away from the semi-cylinder 105. The insertion cone 106 can be inserted into the soil, thereby increasing the contact area between the pile body 1 and the soil, improving the stability of the pile body 1 in relatively soft soil, and further increasing the stability of the power grounding. A fixing mechanism 11 is provided on the outside of the pile body 1.

[0032] Reference Figure 1 , Figure 4 The fixing mechanism 11 includes a fixing disk 111 configured as a disc, which is fixedly connected to the outer wall of the pile body 1. The fixing mechanism 11 also includes a pressing disk 112, which is sleeved on the outside of the pile body 1 and can move up and down outside the pile body 1. The pressing disk 112 is positioned above the fixing disk 111.

[0033] Reference Figure 1 , Figure 4 The fixing mechanism 11 also includes ground nails 113, which pass through the pressure plate 112 and the fixing plate 111 in sequence, fixing the pressure plate 112 and the fixing plate 111 to the ground. The fixing mechanism 11 also includes positioning pins 114, which are fixedly connected to the bottom of the pressure plate 112 and inserted into the top inner wall of the fixing plate 111, so that the pressure plate 112 is accurately installed on the top of the fixing plate 111. The fixing mechanism 11 also includes a spring piece 115 with a certain elasticity, which is set on the top of the fixing plate 111. The initial state of the spring piece 115 is set to a naturally extended arc shape, and the top of the spring piece 115 contacts the bottom of the pressure plate 112.

[0034] Working principle: When in use, the pile body 1 is placed at the location where grounding is required. The top of the pile body 1 is equipped with a conductive terminal for connecting the grounding wire to ensure that the current is quickly conducted into the ground. The screw 2 is rotated by the turntable 3. The rotation of the screw 2 will drive the long rod 4 and the drill bit 5 to rotate together and gradually dig downwards. The spiral pattern on the surface of the drill bit 5 digs the pile body 1 into the ground as it rotates. The spiral pattern on the surface of the drill bit 5 helps to cut the soil and remove it, thereby reducing resistance and allowing the drill bit 5 to enter the ground more smoothly, so that the grounding pile can be firmly erected on the ground.

[0035] Once the drill bit 5 reaches the predetermined depth, the turntable 3 continues to rotate, and the screw 2 will further drive the long rod 4 to move downwards. The inclined surface 102 of the long rod 4 squeezes the semi-cylinder 105, which in turn causes the moving block 103 to overcome the elastic force of the spring 104 and slide away from the center of the pile body 1, thereby pushing the insertion cone 106 to expand outwards. The insertion cone 106 is inserted into the underground soil, which can increase the contact area between the pile body 1 and the soil, and further improve the stability of the grounding pile in soft soil.

[0036] The clamping plate 112 and the fixing plate 111 are fixed to the ground by the ground nail 113. The positioning pin 114 ensures that the clamping plate 112 is accurately installed on the top of the fixing plate 111. The spring piece 115 contacts the bottom of the clamping plate 112 in its naturally extended state, providing additional clamping force to ensure the stability of the fixing mechanism 11. The entire grounding pile is drilled by the rotation of the drill bit 5, expanded outward by the expansion mechanism 10, and clamped and fixed by the fixing mechanism 11, ensuring stable grounding under various soil conditions. Finally, the terminal block of the pile body 1 is connected to the building or facility to be protected by a wire. When lightning strikes, due to the low resistance of the pile body 1, the lightning current can be conducted into the ground from the terminal block, reducing the damage caused by lightning strikes to the building or facility to be protected and protecting the safety of personnel and equipment.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power grounding stake, comprising a stake body (1), characterized in that: A screw rod (2) is threaded onto the inner wall of the pile body (1). A long rod (4) is fixedly connected to the bottom of the screw rod (2). A drill bit (5) is fixedly connected to the bottom of the long rod (4). An annular groove (101) is provided on the surface of the long rod (4). An inclined surface (102) is provided on the surface of the annular groove (101). An expansion mechanism (10) is provided inside the pile body (1). The expansion mechanism (10) includes a movable block (103), which is slidably connected to the inner wall of the pile body (1). The movable block (103) is elastically connected to the inner wall of the pile body (1) through a spring (104). A semi-cylinder (105) is fixedly connected to one end of the movable block (103) near the long rod (4), and a cone (106) is fixedly connected to one end of the movable block (103) away from the semi-cylinder (105). A fixing mechanism (11) is provided on the outside of the pile body (1). The fixing mechanism (11) includes a fixing plate (111), which is fixedly connected to the outer wall of the pile body (1). The fixing mechanism (11) also includes a clamping plate (112), which is sleeved on the outside of the pile body (1) and positioned above the fixing plate (111). The fixing mechanism (11) also includes a ground nail (113), which passes through the clamping plate (112) and the fixing plate (111) in sequence. The fixing mechanism (11) also includes a positioning pin (114), which is fixedly connected to the bottom of the clamping plate (112) and inserted into the top inner wall of the fixing plate (111). The fixing mechanism (11) also includes a spring piece (115). The spring piece (115) is disposed on the top of the fixed plate (111), and the top of the spring piece (115) contacts the bottom of the pressure plate (112).

2. The power grounding stake according to claim 1, characterized in that: A turntable (3) is fixedly connected to the top of the screw (2).

3. The power grounding stake according to claim 1, characterized in that: The annular groove (101) is used to accommodate the semi-cylinder (105).

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