A gasket-free rail vehicle through passage hinge structure capable of compensating for plate thickness difference

Abstract

This invention relates to the field of rail vehicle through-passage components, and discloses a shimless rail vehicle through-passage hinge structure that can compensate for plate thickness differences. It includes a first hinge plate and a second hinge plate, the first hinge plate having an upper rotating cylinder and a lower rotating cylinder, and the second hinge plate having a middle rotating cylinder, all three arranged axially in a staggered pattern, with an integrated rotating shaft passing through them. The rotating shaft is integrally formed from an upper eccentric shaft section, a middle concentric shaft section, and a lower eccentric shaft section. The middle concentric shaft section rotatably engages with the middle rotating cylinder, and the upper and lower eccentric shaft sections engage with the upper and lower rotating cylinders respectively. Rotating the rotating shaft causes the first hinge plate to move radially relative to the second hinge plate, adjusting the relative position of the plate thickness on both mounting surfaces. This invention can achieve dynamic compensation for plate thickness differences, accurately adapting to plate processing tolerances, specification differences, and long-term deformation. Combined with locking and limiting structures, it ensures stable operation, effectively avoids hinge jamming and sealing performance degradation, and reduces maintenance costs.

Claims

1. A shimless through-passage hinge structure for rail vehicles capable of compensating for plate thickness differences, characterized in that, It includes a first folding piece, a second folding piece, and a rotating shaft. The hinge side of the first folding piece is integrally provided with an upper rotating cylinder and a lower rotating cylinder along the axial direction. The hinge side of the second folding piece is integrally provided with a central rotating cylinder along the axial direction. The upper rotating cylinder, the central rotating cylinder, and the lower rotating cylinder are arranged alternately along the axial direction and their inner holes are coaxial. The rotating shaft passes through the inner holes of the upper rotating cylinder, the middle rotating cylinder, and the lower rotating cylinder; the first folding piece is provided with a first mounting surface, and the second folding piece is provided with a second mounting surface, both of which are flat and fit the reference surface; The rotating shaft is a one-piece structure, which includes, along the axial direction, an upper eccentric shaft section, a middle concentric shaft section, and a lower eccentric shaft section. The upper eccentric shaft section passes through the inner hole of the upper rotating cylinder, the lower eccentric shaft section passes through the inner hole of the lower rotating cylinder, and the middle concentric shaft section passes through the inner hole of the middle rotating cylinder. The upper eccentric shaft segment and the lower eccentric shaft segment have their own axes parallel to each other, and their eccentricity relative to the own axis of the middle concentric shaft segment is equal and their eccentricity direction is the same; The upper and lower eccentric shaft sections are used to drive the upper and lower rotating cylinders to move radially relative to the middle rotating cylinder, so as to adjust the relative position of the first mounting surface and the second mounting surface in the plate thickness direction.

2. The gusseted hinge structure for a through passageway of a rail vehicle capable of compensating for plate thickness differences, as described in claim 1, is characterized in that... The outer diameters of the upper eccentric shaft section, the middle concentric shaft section, and the lower eccentric shaft section are all the same.

3. The shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 1, characterized in that, Both ends of the rotating shaft are integrally formed with limiting bosses. The outer diameter of the limiting bosses is larger than the inner diameter of the upper and lower rotating cylinders. After the rotating shaft is assembled, the upper limiting boss abuts against the upper end face of the upper rotating cylinder, and the lower limiting boss abuts against the lower end face of the lower rotating cylinder.

4. The shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 3, characterized in that, The outer wall of the limiting boss at the upper end of the rotating shaft is provided with anti-slip toothed rings evenly distributed in the circumference, and an elastic stop plate is fixedly provided on the upper end face of the upper rotating cylinder; the free end of the elastic stop plate is provided with a pawl, and the pawl engages with the tooth groove of the anti-slip toothed ring.

5. The shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 1, characterized in that, Both the upper and lower rotating cylinders have integrally protruding limiting blocks on their inner walls. The limiting blocks are arranged circumferentially along the inner wall on the eccentric motion trajectory of the eccentric shaft segment. The limiting blocks are used to abut against the outer peripheral wall of the eccentric shaft segment when it rotates to its limit position, so as to restrict the shaft from continuing to rotate.

6. The shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 1, characterized in that, The upper eccentric shaft section and the inner hole of the upper rotating cylinder, the middle concentric shaft section and the inner hole of the middle rotating cylinder, and the lower eccentric shaft section and the inner hole of the lower rotating cylinder are all clearance fits.

7. A shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 3, characterized in that, The upper end face of the rotating shaft is provided with an internal hexagonal adjustment hole, the center of which coincides with the axis of the middle concentric shaft section.

8. The shimless rail vehicle through passage hinge structure for compensating for plate thickness differences according to claim 1, characterized in that, The inner walls of the upper, middle, and lower rotating cylinders are all press-fitted with self-lubricating bushings, and each shaft section rotates in conjunction with the rotating cylinder through the corresponding self-lubricating bushing.

9. A shimless rail vehicle through passage hinge structure capable of compensating for plate thickness differences according to claim 1, characterized in that, Both the first mounting surface and the second mounting surface are provided with countersunk mounting holes, and countersunk connecting screws are provided in the countersunk mounting holes; the countersunk depth of the countersunk mounting holes is greater than or equal to the height of the head of the countersunk connecting screws.

10. A shimless rail vehicle through-passage hinge structure capable of compensating for plate thickness differences, as described in claim 4, is characterized in that... The fixed end of the elastic stop plate is fastened to the upper end face of the upper rotating cylinder by the stop plate fixing screw.

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