4results about How to "Simple structure improvement" 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 provides a magnet injection molding assembly, a rotor assembly and a motor, comprising a magnet and a shaft body, the magnet is provided with a through channel, the magnet is sleeved on the shaft body and is connected with the shaft body through an injection molding member, two end surfaces of the magnet are both provided with a first sinking groove and a second sinking groove, and the first sinking groove and the second sinking groove are communicated with each other. The first sinking groove is an annular sinking groove which is arranged in the circumferential direction and has two closed sides; one end of the second sinking groove is communicated with the first sinking groove, and the other end of the second sinking groove is communicated with the through channel of the magnet; the depth of the first sinking groove is greater than that of the second sinking groove; the first sinking groove, the second sinking groove and the position between the magnet and the shaft body are filled with the injection molding part. Due to the fact that the first sinking groove is the annular sinking groove which is arranged in the circumferential direction and is closed on the two sides and matched with the second sinking groove according to the depth design requirement, when the magnet injection molding piece rotates, radial pulling force can be exerted on the magnet, the requirement for the higher rotating speed can be met, and meanwhile the risk that the magnet ring cracks and is thrown out when the motor rotates at a high speed can be reduced.

The application relates to the technical field of automatic production lines, and provides a casting head and a film casting machine. The casting head comprises a lower die head with a casting cavity, an upper die head arranged on the lower die head, and side connecting plates connected to the left and right sides of the upper die head and the lower die head respectively. The upper die head extends forward along the length direction to form an upper lip part. The lower die head extends forward along the length direction to form a lower lip part. The upper lip part and the lower lip part form a slit outlet communicated with the casting cavity after being enclosed by the upper die head and the lower die head. The front end surface of the upper lip part is an arc surface, and the front end surface of the lower lip part is an inclined plane. In the application, the position of the casting head is adjusted during coating by using the casting head, so that different positions of the arc surface of the upper lip part are opposite to the base tape. In this way, the distance between the slit outlet and the base tape is adjusted, and the thickness of the coating is adjusted. The structure is improved simply, and is not limited by material and process, so that the adjustment is more convenient.

The utility model relates to an elevator car roof driving motor unit and an elevator. According to the utility model, the two ropes are used for pulling the elevator car and are wound on the same reel together, so that the two ropes respectively extend towards the two sides from the upper and lower positions of the reel and are respectively wound on the deflection guide wheels, and the two ropes are bidirectionally discharged on the same reel, so that the stability of rope discharging is ensured, the number of used motors is reduced, and the cost is reduced. And the two deflection guide wheels can rotate horizontally so as to rotate along with the rope outlet angle of the rope, so that stable contact between the rope and the guide wheels is guaranteed, the rope falling risk is reduced, and the lifting height of the lift car is increased. The whole device is good in using effect, simple in structure improvement and convenient to apply and popularize.