Curtain rubber seal plate / curtain rubber plate installation
Curtain rubber seal plate / curtain rubber plate installation In order to avoid the flooding of the shield and the flooding of the shield machine, we usually install a rubber sealing plate at the entrance of the hole to seal the water in the opening. The use of the rubber sealing plate 18703187870 for installation at the time of origination is mainly required. Look at the conditions of the formation. All the shield machines that we usually use are equipped with safety curtains. This is to ensure that the pressure inside the shield machine earthwork, to achieve the soil pressure (or mud) balance. If the curtain is not installed, the chamber will not be sealed and the pressure will not be maintained. However, if the formation does not contain water, and the shield machine is prepared to 0 pressure (drainage of soil and mud in the earth storage tank), it can be unsafe. Curtain rubber seal plate use (1) Under the condition that the shield is sealed out of the hole, the rubber plate will abut against the sector-shaped flap under the action of water and earth pressure in the front. This sealed state is more reliable, so the effect of the sealing effect of the curtain in the out-hole state does not depend on the ply rubber plate. Stretch to keep close to the truss shell. (2) The rubber sheet has a certain stretch rate, which is generally about 2.88 in engineering applications. Exceeding this stretch rate, the rubber sheet will tear. When the shield passes through, the overall stretch rate of the rubber sheet is small, but if the stress concentration occurs locally, a large stretch rate will also occur; the greater the overall stretch rate, the larger the overall stretch rate, the rubber sheet and the shield shell. The greater the circumferential frictional force, the more likely the local stress concentration occurs between the two, that is, the local stretch rate is much higher than the overall stretch rate. This is also the reason why the shield rubber plate design chooses a smaller stretch rate when the shield shell size is larger. (1) The stretch rate of the rubber plywood of the jacking machine out of the hole state is 1.247 to 1.49, which is consistent with the analysis by the 6340mm shield machine: the state of the shield hole out of the hole is more reliable: (2) The stretch rate of the ply rubber sheet in the hole-in-pipe jacking machine is 1.7 to 2.88, which is far greater than the stretch rate of the ply rubber sheet in the out-hole state. By increasing the stretch rate of the rubber plate, the ply rubber plate is pressed against the outer wall of the pipe jacking machine to resist the water and earth pressure behind. This method can receive a water stop effect for a small size circular pipe jacking machine. (3) The larger the outer diameter of the pipe jacking machine, the smaller the stretch rate of the ply rubber sheet. This is mainly due to the increase in the size of the pipe jacking machine, the length of the contact surface between the tensioned rubber plate and the shell of the jacking machine is also greater, and the frictional force between the two in the direction of elongation of the cord {circumferential direction) is also The larger, if you choose a large curtain rubber seal plate stretch rate will increase the circumferential friction; and the elongation of the curtain can not be completely uniform, or due to the local stress concentration caused by the local larger stretch rate Since the curtain tears and breaks, the cord rubber sheet elongation is appropriately reduced from a safety point of view. The utility model discloses an Electronic Cigarette with atomizer oil core separation structure, which comprises a atomizer assembly and a battery assembly; The utility model has the advantages of reasonable structure design and high practicability. During operation, because the oil storage tank of the atomizer is completely sealed and the oil guide material is completely isolated from the oil guide material, the oil guide material will never contact with the oil guide material in the storage process Oil Coil Separation Pod Patent,Oil Coil Separetion Vape Pod Oem,Innovated Vape Products Oem,Oil Coil Separation Vape Products Oem Shenzhen MASON VAP Technology Co., Ltd. , https://www.disposablevapepenfactory.com
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