Tower drum unit driving end grounding device

Abstract

The utility model discloses a tower tube unit driving end grounding device which comprises a grounding rod and a baffle ring fixedly connected to the side wall of the grounding rod, one end of the grounding rod is connected with a grounding wire through a bolt, and the tower tube unit driving end grounding device further comprises an auxiliary assembly arranged on the grounding rod and used for improving the connecting strength with the ground. The auxiliary assembly comprises a mounting cavity formed in the grounding rod, multiple groups of through holes are formed in the inner wall of the mounting cavity, every two through holes are symmetrically arranged, each through hole is provided with an insertion rod, and the end, close to soil, of each insertion rod is fixedly connected with a conical head. According to the grounding device for the driving end of the tower drum unit, through the arrangement of the auxiliary assembly, the stress distribution of soil around the grounding rod is changed while the lateral friction force is increased for the grounding rod, and when the grounding rod is subjected to various external forces such as mechanical collision, wind load and the like, the plurality of insertion rods share the external forces, so that the grounding rod is prevented from being damaged. Therefore, the risks of displacement and inclination of the grounding rod under the condition of external force are reduced.

Description

Technical Field

[0001] This utility model relates to the field of tower unit grounding technology, specifically a tower unit drive end grounding device. Background Technology

[0002] The tower turbine generator set's drive end contains numerous electrical devices, such as motors and frequency converters. During normal operation, the insulation performance of these devices ensures that the current flows within the specified circuit path. However, when the insulation of the equipment fails, such as due to insulation aging, moisture, or mechanical damage, the metal casing of the equipment may become live. Therefore, a grounding device is required to allow the fault current to flow rapidly into the ground, keeping the potential of the equipment casing at a safe level close to the ground potential, thereby ensuring the safety of personnel.

[0003] In existing technologies, grounding is achieved by vertically driving a grounding electrode into a suitable location near the tower (such as near the foundation or in the surrounding area where it does not affect other facilities). The grounding electrode inserted into the ground mainly relies on the friction between the grounding electrode and the soil to maintain its stability in the soil. During long-term use, the grounding electrode is prone to displacement, tilting, and other stability problems due to severe weather conditions (such as strong winds and heavy rain) or other external factors (such as the influence of nearby construction activities), thereby damaging the normal connection of the grounding system and affecting the grounding effect.

[0004] Therefore, there is an urgent need for a grounding device for the drive end of tower turbine units to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grounding device for the drive end of a tower unit, comprising a grounding rod and a retaining ring fixedly connected to the side wall of the grounding rod, wherein one end of the grounding rod is connected to a grounding wire by bolts, and further comprising an auxiliary component disposed on the grounding rod for improving the connection strength with the ground;

[0006] The auxiliary component includes a mounting cavity formed in the grounding rod. The inner wall of the mounting cavity has multiple sets of through holes arranged symmetrically in pairs. Each through hole is provided with an insertion rod. A conical head is fixedly connected to the end of each insertion rod near the soil. The mounting cavity is provided with a driving component for driving two opposing insertion rods. Each through hole is provided with a rotating component for rotating the insertion rods during the driving process.

[0007] The drive assembly includes a drive plate slidably connected to the mounting cavity. A rotating plate is hinged to the side of the drive plate near the insertion rod. A connecting plate is hinged to the end of the two rotating plates away from the drive plate. The side of the two connecting plates away from the rotating plates is rotatably connected to the end of the insertion rod away from the conical head. The mounting cavity is provided with a push assembly for pushing the drive plate.

[0008] The rotating assembly includes a spiral groove formed on the side wall of the insertion rod, and a stop rod is slidably connected to the spiral groove. One end of the stop rod is connected to the inner wall of the through hole.

[0009] The pushing assembly includes two symmetrically arranged pushing tubes disposed in the mounting cavity. One end of each pushing tube is connected to a drive plate near the grounding wire. One of the two pushing tubes is slidably connected to a guide rod. One end of the guide rod is connected to the top wall of the mounting cavity. The other pushing tube is threadedly connected to a threaded rod.

[0010] The end of the threaded rod away from the push tube is fixedly connected to a push rod, and the end of the push rod away from the threaded rod passes through the grounding rod and has a rotating hole with a regular hexagonal shape.

[0011] The mounting cavity is provided with a connecting rod, and each of the drive plates is fixedly connected to the connecting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The tower unit drive end grounding device of this utility model, through the setting of auxiliary components, under the coordinated action of the drive component, rotation component and push component, increases the lateral friction force for the grounding rod and changes the stress distribution of the soil around the grounding rod, making the soil around the grounding rod more compact. When the grounding rod is subjected to various external forces such as mechanical collisions and wind loads, the multiple insertion rods share the external force, reducing the local pressure on the connection between the grounding rod and the soil, thereby reducing the risk of displacement or tilting of the grounding rod under external forces, and thus improving the connection strength of the grounding rod in the soil. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the auxiliary component of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0018] In the diagram: 101, grounding rod; 102, retaining ring; 103, bolt; 104, grounding wire; 201, mounting cavity; 202, through hole; 203, insertion rod; 204, conical head; 301, drive plate; 302, rotating plate; 303, connecting plate; 401, spiral groove; 402, abutment rod; 501, push tube; 502, guide rod; 503, threaded rod; 504, push rod; 6, connecting rod. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] Please see Figures 1-4 The diagram shows a grounding device for the drive end of a tower unit, which includes a grounding rod 101 and a retaining ring 102 fixedly connected to the side wall of the grounding rod 101. One end of the grounding rod 101 is connected to a grounding wire 104 by a bolt 103. It also includes an auxiliary component set on the grounding rod 101 to enhance the connection strength with the ground.

[0022] The auxiliary components include a mounting cavity 201 opened in the grounding rod 101. The inner wall of the mounting cavity 201 has multiple sets of through holes 202 arranged symmetrically in pairs. Each through hole 202 is provided with a rod 203. A conical head 204 is fixedly connected to the end of each rod 203 near the soil. The mounting cavity 201 is provided with a driving component for driving two opposite rods 203. Each through hole 202 is provided with a rotating component for rotating the rod 203 during the driving process.

[0023] It should be noted that, through the configuration of auxiliary components, the combined action of the drive component, rotation component, and push component increases the lateral friction force for the grounding rod 101 while altering the stress distribution of the soil around the grounding rod 101. This makes the soil around the grounding rod 101 more compact. Furthermore, when the grounding rod 101 is subjected to various external forces (such as mechanical collisions, wind loads, etc.), the multiple insertion rods 203 share the external force, reducing the local pressure on the connection between the grounding rod 101 and the soil. This reduces the risk of displacement or tilting of the grounding rod 101 under external forces, thereby improving the connection strength of the grounding rod 101 in the soil.

[0024] It is worth noting that the drive end of the tower turbine unit is a critical component, playing a core role in its operation. Functionally, it is primarily responsible for converting wind power and other energy sources into mechanical energy, and further into electrical energy. The drive end typically includes important components such as a motor and gearbox. The motor converts electrical energy into rotational mechanical energy through electromagnetic induction, driving the gearbox. The gearbox, through different gear combinations, adjusts the speed and torque to meet the generator's operating requirements, ensuring stable and efficient power output. As this is existing technology, it will not be elaborated upon here. Similarly, the grounding methods for the vertical grounding electrode and down conductor are only briefly described here; for specific structures and working principles, please refer to existing publicly available technologies.

[0025] Please see Figure 2 and Figure 3 The driving assembly shown in the figure includes a driving plate 301 slidably connected to the mounting cavity 201. A rotating plate 302 is hinged to the side of the driving plate 301 near the insertion rod 203. A connecting plate 303 is hinged to the end of the two rotating plates 302 away from the driving plate 301. The side of the two connecting plates 303 away from the rotating plate 302 is rotatably connected to the end of the insertion rod 203 away from the conical head 204. The mounting cavity 201 is provided with a pushing assembly for pushing the driving plate 301.

[0026] It should be noted here that the drive component is configured to move the two opposing rods 203 closer to or further apart from each other.

[0027] Please see Figure 3 and Figure 4 The rotating assembly shown in the figure includes a spiral groove 401 formed on the side wall of the insertion rod 203. The spiral groove 401 is slidably connected to a stop rod 402, and one end of the stop rod 402 is connected to the inner wall of the through hole 202.

[0028] It should be noted that by rotating the component, the insertion rod 203 is inserted into the soil by screwing, thereby reducing the resistance of the insertion rod 203 during the insertion process.

[0029] Working principle: When grounding the drive end of the tower unit, the grounding rod 101 is first inserted into the ground. Then, through the pushing force of the push component and the connecting rod 6, each drive plate 301 moves in the mounting cavity 201. During the movement of each drive plate 301 in the mounting cavity 201, it will drive the two rotating plates 302 located on the same side to rotate. Then, under the pushing force of the two rotating plates 302, the two opposite insertion rods 203 are pushed to move away from each other.

[0030] Furthermore, during the movement of the two insertion rods 203 away from each other, the interaction between the abutment rod 402 and the spiral groove 401 on the side wall of the insertion rod 203 causes the insertion rod 203 to rotate, thereby allowing the insertion rod 203 to be inserted into the soil by a screw-in action. This reduces the resistance of the insertion rod 203 during the insertion process. As each insertion rod 203 is inserted into the soil around the grounding rod 101, it increases the lateral friction force of the grounding rod 101. After multiple insertion rods 203 are inserted into the soil around the grounding rod 101, they change the stress distribution of the surrounding soil. They are like building a small reinforcing frame in the soil, making the soil around the grounding rod 101 more compact. When the grounding rod 101 is subjected to various external forces (such as mechanical collisions, wind loads, etc.), the multiple insertion rods 203 share the external forces, reducing the local pressure on the connection between the grounding rod 101 and the soil. This reduces the risk of displacement or tilting of the grounding rod 101 under external forces, thereby improving the connection strength of the grounding rod 101 in the soil.

[0031] After the grounding rod 101 is installed, a grounding down conductor is led out from the drive end of the tower unit. The down conductor can be made of copper stranded wire or flat steel. One end of the down conductor is firmly connected to the grounding terminal of the drive end, for example, by crimping or welding, to ensure a reliable connection. The down conductor is laid along the outer facade or internal structure of the tower and connected to the grounding wire 104 at the top of the vertical grounding rod 101. At the same time, during the laying process, attention should be paid to fixing and protecting the down conductor to prevent it from being affected by mechanical damage, wind, sun and other environmental factors. Fixing clamps can be used to fix the down conductor to the tower and wrap the down conductor with an insulating protective sleeve. Then, through the electrical connection between the down conductor and the grounding wire 104, the current generated by the fault at the drive end of the tower unit can be quickly flowed into the ground, so that the potential of the equipment shell is kept at a safe level close to the ground potential, thereby ensuring the safety of personnel.

[0032] Example 2

[0033] Please see Figure 3 This embodiment further illustrates Example 1. The push assembly shown in the figure includes two symmetrically arranged push tubes 501 disposed in the mounting cavity 201. One end of the two push tubes 501 is connected to the drive plate 301 near the grounding wire 104. One of the two push tubes 501 is slidably connected to a guide rod 502. One end of the guide rod 502 is connected to the top wall inside the mounting cavity 201. The other push tube 501 is threadedly connected to a threaded rod 503. The end of the threaded rod 503 away from the push tube 501 is fixedly connected to a push rod 504. The end of the push rod 504 away from the threaded rod 503 passes through the grounding rod 101 and has a hexagonal rotating hole.

[0034] It should be noted that by setting up the push assembly, the push rod 504 can be rotated by inserting an Allen wrench into the rotating hole at the end face of the push rod 504, which in turn drives the threaded rod 503 to rotate. Thus, under the threaded meshing transmission action between the threaded rod 503 and the push tube 501 and the guiding action of the guide rod 502, the drive plate 301 is moved.

[0035] Example 3

[0036] Please see Figure 2 This embodiment is a further explanation of other embodiments. The mounting cavity 201 in the figure is provided with a connecting rod 6, and each drive plate 301 is fixedly connected to the connecting rod 6.

[0037] It should be noted here that the connecting rod 6 is used to enable the synchronous movement of each drive board 301.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A grounding device for the drive end of a tower turbine unit, comprising: A grounding rod (101) and a retaining ring (102) fixedly connected to the side wall of the grounding rod (101), wherein one end of the grounding rod (101) is connected to a grounding wire (104) by a bolt (103); Its characteristic is that it further includes: An auxiliary component installed on the grounding rod (101) to enhance the strength of the connection with the ground; The auxiliary component includes a mounting cavity (201) opened in the grounding rod (101). The inner wall of the mounting cavity (201) has multiple sets of through holes (202) arranged symmetrically in pairs. Each through hole (202) is provided with a rod (203). Each rod (203) has a conical head (204) fixedly connected to one end near the soil. The mounting cavity (201) is provided with a driving component for driving two opposing rods (203). Each through hole (202) is provided with a rotating component for rotating the rods (203) during the driving process.

2. The grounding device for the drive end of a tower turbine unit according to claim 1, characterized in that: The drive assembly includes a drive plate (301) slidably connected to the mounting cavity (201). A rotating plate (302) is hinged to the side of the drive plate (301) near the insertion rod (203). A connecting plate (303) is hinged to the end of the two rotating plates (302) away from the drive plate (301). The side of the two connecting plates (303) away from the rotating plate (302) is rotatably connected to the end of the insertion rod (203) away from the conical head (204). The mounting cavity (201) is provided with a push assembly for pushing the drive plate (301).

3. The grounding device for the drive end of a tower turbine unit according to claim 2, characterized in that: The rotating assembly includes a spiral groove (401) formed on the side wall of the insert (203), and a stop rod (402) is slidably connected to the spiral groove (401). One end of the stop rod (402) is connected to the inner wall of the through hole (202).

4. A grounding device for the drive end of a tower turbine unit according to claim 3, characterized in that: The pushing assembly includes two mutually symmetrically arranged pushing tubes (501) disposed in the mounting cavity (201). One end of the two pushing tubes (501) is connected to a drive plate (301) near the grounding wire (104). One of the two pushing tubes (501) is slidably connected to a guide rod (502). One end of the guide rod (502) is connected to the top wall inside the mounting cavity (201). The other of the two pushing tubes (501) is threadedly connected to a threaded rod (503).

5. A grounding device for the drive end of a tower turbine unit according to claim 4, characterized in that: The threaded rod (503) is fixedly connected to a push rod (504) at one end away from the push tube (501). The push rod (504) is installed through the grounding rod (101) at one end away from the threaded rod (503) and has a rotating hole with a regular hexagonal shape.

6. A grounding device for the drive end of a tower turbine unit according to claim 5, characterized in that: The mounting cavity (201) is provided with a connecting rod (6), and each of the drive plates (301) is fixedly connected to the connecting rod (6).

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