9results about How to "Improve grounding efficiency" patented technology

The invention discloses an electric grounding device for underground construction and a construction method thereof, and belongs to the field of underground engineering. The device comprises a fixed sleeve and a conducting rod body, at least two openings are formed in the bottom of the side face of the fixed sleeve, a conical connector is arranged at the bottom of the conducting rod body, and a fixing mechanism for fixing the fixed sleeve and the conducting rod body together is arranged at the top of the conducting rod body. When the method is used for construction, a drill hole perpendicular to a rock mass is drilled firstly, then the top of the conducting rod body is inserted into the fixing sleeve and extends out of the top of the fixing sleeve, then the locking nut is rotated to enable the conical connector to be squeezed into the opening of the fixing sleeve, a fragment formed by the opening is inserted into the hole bottom of the drill hole to be fixed, and then the locking nut is screwed down. After the locking nut is fixed, the grounding wire is sleeved into the top threaded section of the conductive rod body to be fixed, and effective grounding is completed. By simply improving the grounding device, the grounding efficiency can be enhanced and the grounding strength can be improved under the condition that the original construction mode and the existing construction difficulty are not changed.

The utility model belongs to the technical field of wind power tower tube welding operation, and particularly relates to a grounding device for rotary welding of a wind power tower tube. The device comprises a metal ring type support, an electric brush, bolts and nuts and the like, the electric brush is mounted on the inner side of the metal ring type support, a grounding wire bar is fixed on the support through a first bolt and nut, and a second bolt and nut penetrates through a flange hole and is rotatably arranged on a wind power tower to form a welding loop. The three groups of electric brushes rotate around the second bolt and nut, so that the grounding cable naturally droops when the tower drum is welded and rotated, the cable is prevented from directly contacting with the surface of the flange, the cable and the flange are protected, the service life is prolonged, and the maintenance cost is reduced. In addition, the metal ring type support adopts a trapezoidal design and is connected with the hasp through the hinge piece, so that opening and closing adjustment is facilitated. Meanwhile, a metal guide cylinder is additionally arranged on the second bolt nut, so that the stability of the grounding device is enhanced.

The utility model discloses a box-type transformer substation box body grounding protection device, and relates to the technical field of grounding protection devices, the box-type transformer substation box body grounding protection device comprises a box-type transformer substation and a grounding base, the grounding base is installed at the bottom of the box-type transformer substation, and a first grounding assembly and a second grounding assembly are installed between the four corners of the box-type transformer substation and the four corners of the grounding base respectively. According to the scheme, through the structural design of the first grounding assembly and the second grounding assembly, the first grounding assembly provides structural support through the metal supporting foot and the flange connecting plate, and is combined with the first conductive bolt through the fixing screw hole to form tight connection; a grounding cable in the second grounding assembly is connected with a second conductive bolt through a metal lantern ring, so that the flexibility of the grounding system is improved, each connection point can bear certain mechanical pressure due to the design, meanwhile, long-term stable connection between the box-type substation and the ground can be effectively ensured, and the service life of the box-type substation is prolonged. Therefore, the potential safety hazard of grounding connection between the box-type substation and the ground can be reduced.

The utility model belongs to the technical field of lightning protection grounding, and particularly relates to a lightning protection grounding device. A lightning protection grounding device is characterized in that the lightning protection grounding device comprises a main body steel column, the lower part structure of which is anchored on a concrete foundation, and a downlead main body which is used for receiving lightning current from the upper part of a building and downwards conducting the lightning current; the steel reinforcement cage is arranged in the foundation, the steel reinforcement cage comprises a plurality of vertical stirrups and surrounding horizontal stirrups, the vertical stirrups and the surrounding horizontal stirrups jointly form a structural framework of the foundation, the vertical stirrups are fixedly connected with the lower structure of the main steel column, and the steel reinforcement cage is used as a foundation grounding electrode to disperse lightning current and guide the current to the foundation; and the at least two main reinforcements are electrically connected with the reinforcement cage in the foundation, are electrically connected with the main body steel column, and are used for effectively introducing and dispersing lightning current conducted on the main body steel column to the whole reinforcement cage.

A prefabricated bridge deck ancillary facility grounding connector comprises a metal fixing (1), a pre-embedded mounting seat (3), and a guide plate (2), wherein the metal fixing (1) assembles and connects the guide plate (2) and the pre-embedded mounting plate, the pre-embedded mounting seat (3) is pre-embedded in the upper surface of the bridge deck, the guide plate (2) is pre-embedded in the bottom plate of the prefabricated bridge deck ancillary facility, the pre-embedded mounting seat (3) is longitudinally connected in series in the bridge deck, and the guide plate (2) is connected to a grounding terminal in the prefabricated bridge deck ancillary facility. The prefabricated bridge deck ancillary facility grounding connector provided by the present invention realizes the integration of bridge deck ancillary facility power generation through the connecting member being grounded and connected in series in the bridge deck, improves the grounding efficiency, achieves a better grounding effect, reduces the complexity of prefabricated bridge deck splicing, shortens the construction period, and increases the integrity of prefabricated bridge deck ancillary facilities.

The application relates to the field of oil-immersed devices, and discloses an explosion-proof device of an explosion-proof membrane of an oil-immersed equipment lifting seat. In the application, the explosion-proof oil tank serves as an oil storage component, the bottom surface of the explosion-proof oil tank is connected with a supporting insertion rod, a connecting socket and a ceramic bearing table serving as an assembly with insulation properties, the bottom of the supporting insertion rod, the connecting socket and the ceramic bearing table serving as a supporting assembly is connected with a metal base and a metal strip frame to form a metal cage assembly as a whole, and a grounding assembly is formed by a metal floor, a grounding insertion rod, a grounding sleeve, a grounding wire and a grounding base, so as to form a protective assembly similar to a Faraday cage in cooperation with the cage assembly, so that the explosion-proof oil tank in the interior can still keep the electric potential stable under the condition of a relatively large surrounding charged environment or electric shock, the possibility of explosion in the explosion-proof oil tank is avoided, and the cage assembly also plays a protective role to avoid the collision of the explosion-proof oil tank.

The utility model discloses a grounding claw for a grounding assembly of a communication base station box, which particularly relates to the technical field of communication equipment and comprises a chassis, and a supporting assembly is mounted at the bottom end of the chassis. The supporting assembly comprises a fixed column, a plurality of first shaft supports are fixedly connected to the top end of the outer side of the fixed column, first push rods are installed in the first shaft supports, second shaft supports are installed on the outer sides of the bottom ends of the first push rods, and a movable column is installed on the outer side of the bottom end of the fixed column. Compared with the prior art, the supporting assembly is arranged, the movable column moves upwards to drive the second pushing rod to push the first telescopic rods to move outwards, then the first pushing rods are used for supporting the first telescopic rods to move outwards, and stable connection between the first telescopic rods and the ground and between the first telescopic rods and the base station box structure can be ensured; the supporting stability of the multiple first telescopic rods is improved, loosening or displacement caused by external factors can be prevented, and therefore continuous effectiveness of the multiple first telescopic rods is guaranteed.

The invention discloses a combined lightning protection device for a power distribution network line, and the device comprises an installation frame, a lightning rod is clamped on the installation frame, the bottom of the lightning rod is connected with a first grounding lead, the bottom end of the first grounding lead is connected with an intelligent surge protector, and the bottom end of the intelligent surge protector is connected with a second grounding lead. A coupler is arranged at the bottom end of the second grounding lead, a third grounding lead is connected to the bottom of the coupler, a grounding device is arranged at the bottom end of the third grounding lead, a driving mechanism used for driving the grounding device to act is arranged on the grounding device, and the outer wall of the lightning rod is sleeved with a protection mechanism. According to the combined lightning protection equipment for the power distribution network line, the installation frame ensures that the lightning rod is kept stable and is convenient to maintain or replace, the protection mechanism reduces physical damage for the lightning rod, the insulating layer prevents accidental electric shock, the grounding device facilitates improvement of grounding efficiency, reduction of grounding resistance and improvement of stability, and the driving mechanism simplifies the manual installation process. The method adapts to different soil conditions.

The utility model provides a rapid wiring mixed grounding device suitable for a spaceflight launching site, comprising a plurality of mixed grounding boxes which are communicated with each other through grounding cables, any one of the mixed grounding boxes comprises a box body fixed on a wall body, and the front surface of the box body is configured to be an insulating plastic plate; the four binding posts are mounted on the insulating plastic plate, and the four binding posts are not communicated with one another; the box body is also provided with a cable inlet pipe, and a grounding cable passes through the cable inlet pipe and is connected with the binding post. According to the utility model, a plurality of mixed grounding boxes which are communicated with one another through grounding cables are adopted, so that grounding requirements of equipment at different positions in a large-space test place can be met, and the mixed grounding boxes do not need to be installed in a box body of a junction box, so that an operator can directly connect an equipment grounding wire to a binding post on the surface of an insulating plastic plate without opening the box body; wiring is convenient and fast, and grounding efficiency is improved.