Sealing structure of hinged parts
A sealing structure and component technology, applied in the direction of engine sealing, engine components, ballast layer, etc., can solve problems such as harsh working conditions and narrow space locations
Active Publication Date: 2015-09-23
CHANGZHOU RUITAI ENG MASCH CO LTD +1
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- Description
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Problems solved by technology
Due to the use of thin oil lubrication, coupled with the narrow space and harsh working conditions of this part, the conventional sealing structure cannot meet the requirements, and a reasonable sealing structure of the pick arm hinge must be designed according to the special requirements of this part. To ensure a good sealing effect
Method used
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[0019] The present invention is described in further detail below in conjunction with the embodiment that accompanying drawing provides.
[0020] Such as figure 1 , 2 , 3, 4, 5, 6, and 7, the sealing structure of a hinged part of the present invention includes a first part 1, a second part 4 and a pin shaft 7, and the two ends of the pin shaft 7 are inserted respectively In the supporting holes 1-1-1 on the two supporting parts 1-1 of the first part 1, the middle part of the pin shaft 7 is loosely fitted with a spacer 6, and the spacer 6 is loosely fitted with two Jacket 5, there is a gap 9 between the adjacent inner end surfaces of the two jackets 5, and the outer end of the jacket body 5-2 of each jacket 5 has a radial boss 5-1, and the two jackets The outer circumference of the sleeve body 5-2 of 5 is tightly matched with the inner hole 4-1 of the second part 4, and the inner surfaces of the radial bosses 5-1 of the two jackets 5 are respectively connected with the inner ...
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The invention discloses a sealing structure of hinged parts. Two ends of a pin shaft are respectively inserted into supporting holes on two supporting portions of a first part, a partition sleeve is sleeved in the middle of the pin shaft in loose fit mode, two clamping sleeves are arranged on the partition sleeve in loose fit mode, and a space is reserved between adjacent inside end surfaces of the two clamping sleeves. A radial boss is respectively arranged at the outer end of the sleeve body of each clamping sleeve, the periphery of the sleeve body of each clamping sleeve is respectively tightly matched with an inner hole of a second part, and the inside surface of each radial boss respectively butts against a corresponding end surface of two ends of the inner hole on the second part. Two pressure-bearing plates are further sleeved on the pin shaft in loose fit mode, the outer sides of the two pressure-bearing plates respectively butt against corresponding inside surfaces of the two supporting portions of the first part, and the inner sides of the two pressure-bearing plates respectively butt against corresponding end surfaces of two ends of the partition sleeve. A disc-shaped elastic seal ring is respectively sleeved on the cylindrical surface of each radial boss of each clamping sleeve, outer threads are arranged at at least one end of the pin shaft, and the pin shaft is fastened on the first part through a nut. The sealing structure is reliable in sealing, compact in structure and convenient to mount and demount.
Description
technical field [0001] The invention relates to a hinged component structure, in particular to a hinged sealing structure of a pick arm of a tamping device of a railway tamping vehicle. Background technique [0002] The tamping car is the main large-scale road maintenance machinery and equipment used in railway line operations. It has been widely used in railway line repair, existing line speed-up reconstruction and new line construction. The tamping device is the main working device of the tamping vehicle. It is used to tamp the ballast on both sides of the rail to improve the compactness of the turnout at the bottom of the pillow. stability. The pick arm is an important part of the tamping device. It bears the force of vibration and tamping during operation. There is a swing support hole in the middle of the pick arm, which is hinged with the box beam of the tamping device through a pin. [0003] The hinged part of the pick arm is in extremely harsh working conditions wh...
Claims
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IPC IPC(8): F16J15/16E01B27/20
Inventor 聂志镇翁敏红王磊
Owner CHANGZHOU RUITAI ENG MASCH CO LTD