Method for preventing torque of rubber framework type gasket fastening bolt from attenuation
A technology for fastening bolts and skeletons, which is applied to the sealing device of the engine, engine components, machines/engines, etc. It can solve the problems of fastening bolt torque reduction, part seal failure, and torque attenuation, so as to prevent torque attenuation and prolong service life. Long life, easy disassembly and maintenance
Inactive Publication Date: 2019-02-19
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
The overall thickness of the current rubber skeleton gasket is consistent. Due to the properties of the rubber, when the rubber skeleton gasket is used to connect and seal the workpiece, the fastening bolt torque will decrease within a period of time after the fastening bolt is tightened. Severe problems that lead to loosening and broken gaskets, especially the rubber gaskets on the engine. After being heated at high temperature, after the rubber expands and contracts with cold, the torque of the fastening bolts attenuates most obviously, which makes it easier to cause the seal failure of the parts The problem
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.
[0016] refer to Figure 1-2 , a kind of method of the present invention prevents the attenuation of fastening bolt torque of rubber skeleton type gasket, this method is to thicken the bolt bearing surface 3 of the bolt bearing surface 3 at both ends of passing nail hole 2 in gasket skeleton 1, promptly along the nail passing hole 2 is heightened in the axial direction, so that the bolt pressure surface 3 is higher than the top surface of the gasket skeleton 1, and a vulcanized rubber layer 4 is added around the bolt pressure surface 3, so that the top surface of the vulcanized rubber layer 4 is higher than the bolt pressure surface 3. In the actual sealing connection, after fastening the bolts to fasten the fastening parts, the vulcanized rubber layer 4 is compressed under the axial pressure of the bolts, and finally the bolt pressure surfac...
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Abstract
The invention discloses a method for preventing torque of a rubber framework type gasket fastening bolt from attenuation. According to the method, bolt pressure-bearing surfaces at the two ends of a nail-passing hole in a gasket framework is thickened to enable the bolt pressure-bearing surfaces to be higher than the gasket framework; and vulcanized rubber layers are additionally arranged on the peripheries of the bolt pressure-bearing surfaces to enable the top surfaces of the vulcanized rubber layers to be higher than the bolt pressure-bearing surfaces. The method is utilized to assist the fastening bolt to seal a part, so that the problem that the fastening bolt is loose when the rubber framework type gasket is connected with the sealed part is effectively solved, and the service life of the part is prolonged. The method has the characteristics of being convenient to dismantle, mount and maintain and low in cost.
Description
technical field [0001] The invention relates to the technical field of engine assembly, more specifically, it relates to a method for preventing torque decay of rubber skeleton gasket fastening bolts. Background technique [0002] In the field of engine manufacturing, the connection and sealing methods of some engine parts and the pipe seals in other fields are mostly sealed with rubber skeleton gaskets. Due to the large filling amount of rubber skeleton gaskets, for flat and rough parts that are difficult to control in the manufacturing process, rubber skeleton gaskets are generally used to connect and seal. The overall thickness of the current rubber skeleton gasket is consistent. Due to the properties of the rubber, when the rubber skeleton gasket is used to connect and seal the workpiece, the fastening bolt torque will decrease within a period of time after the fastening bolt is tightened. Seriously, the problem of loosening and gasket smashing, especially the rubber ga...
Claims
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Login to View More IPC IPC(8): F02F11/00
CPCF02F11/00
Inventor 刘建征范才翼刘建飞温道明杨献辉
Owner GUANGXI YUCHAI MASCH CO LTD