A kind of coupling cover connection structure

Abstract

The present invention provides a coupling cover connection structure, including a coupling mounting seat, a long strip-shaped protrusion is provided in the middle of the lower side of the lower plate of the coupling mounting seat, and a hole for installing a second coupling pin is provided on the coupling mounting seat at the middle position of the protrusion. The structure is characterized in that it also includes a coupling cover, a second coupling pin, and the lower end of the second coupling pin is provided with a lower bolt. After the second coupling pin passes through the coupling mounting seat, the lower bolt extends out of the outside of the coupling mounting seat; a hole is provided in the middle of the coupling cover, which is fixed to the lower side of the coupling mounting seat, and a slotted nut is installed after the lower bolt passes through the middle hole of the coupling cover, and the slotted nut is in a relaxed state so that the coupling pin can rotate freely. The present invention has the advantages of being able to meet the convenience of installation of the existing vehicle structure, and at the same time, solves the problems of wear and fatigue of the original coupling pin bolts, takes into account positioning and freedom, and releases the force that restricts the axial rotation of the coupling pin in the original bolt structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of connecting devices between a coupler seat and a coupler pin of a rail vehicle body, and in particular to a coupler support cover connecting structure. Background Art

[0002] At the connection point 4 between the American-style coupler tailstock 3 and the vehicle body, the current structure mainly adopts a structure in which a bolt 2 is passed through the coupler pin 1 for support. Since the bolt is fixed to the coupler pin and the vehicle body, the coupler pin cannot rotate, and the coupler can only rotate around the coupler pin. When there are some manufacturing deviations in the position tolerance, when the coupler rotates, there is a tension between the coupler tailstock and the coupler pin, causing the bolt passing through the coupler pin to break. In addition, there is a tolerance gap between the coupler pin bolt and the vehicle body and the coupler pin, and vibration and fatigue will also cause fatigue and wear. Based on the problems and current status of the current structure, a new design structure is proposed to solve the existing practical problems. Summary of the invention

[0003] The present invention aims to solve the problems of wear and fatigue fracture of the existing coupler pin bolt supporting structure at the connection between the American coupler tailstock and the car body, thereby providing a coupler pin supporting cover device, which takes into account both positioning and freedom, releases the force that restricts the axial rotation of the coupler pin in the original bolt structure, and improves safety at the same time.

[0004] To achieve the above-mentioned purpose, the present invention provides a coupler support cover connection structure, including a coupler mounting seat, a long strip-shaped protrusion is provided in the middle of the lower side of the lower plate of the coupler mounting seat, and a hole for installing a second coupler pin is provided on the coupler mounting seat at the middle position of the protrusion. The structure is characterized in that it also includes a coupler support cover and a second coupler pin. The lower end of the second coupler pin is provided with a lower bolt. After the second coupler pin passes through the coupler mounting seat, the lower bolt extends out of the outside of the coupler mounting seat; a hole is provided in the middle of the coupler support cover and is fixed to the lower side of the coupler mounting seat. After the lower bolt passes through the middle hole of the coupler support cover, a slotted nut is installed, and the slotted nut is in a relaxed state so that the coupler pin can rotate freely.

[0005] Furthermore, the coupler support cover is U-shaped as a whole, and two sides are fixed to the two sides of the long strip protrusion of the lower plate of the coupler mounting seat by second mounting bolts, and then fixed by top screws.

[0006] Furthermore, two sides of the long strip-shaped protrusion are fixedly connected to the mounting plate.

[0007] Furthermore, the middle position of the bottom of the coupler support cover is raised and has a hole, and recesses are provided on both sides for avoiding the installation plate.

[0008] Furthermore, reinforcing ribs are provided at the corner positions of the mounting plate and the coupler mounting seat 5 .

[0009] The invention has the advantages of being able to meet the needs of convenient installation of existing vehicle structures, while solving the problems of wear and fatigue of the original coupler pin bolts, taking into account positioning and freedom, and releasing the force in the original bolt structure that limits the axial rotation of the coupler pin. At the same time, safety is improved, and the original two-bolt structure is changed to a four-bolt structure, while adding safety ropes and cotter pins to prevent loosening and falling off. Double top screws are added for fixing, and bolts are added to the coupler pin, which are matched with slotted nuts to limit the up and down movement of the coupler pin. It not only meets functional requirements but also takes into account safety and reliability. Through the device of the invention, the safe connection between the coupler tailstock and the chassis of the vehicle body is completed, which enables the coupler to adapt to the free rotation of the vehicle during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the existing American-style coupler and car body connection structure;

[0011] Figure 2 This is a schematic diagram of the coupling cover connection structure of the present invention;

[0012] Figure 3 It is a side view of the coupling cover connection structure of the present invention;

[0013] Figure 4 It is a front view of the coupling cover connection structure of the present invention;

[0014] Figure 5 This is an exploded view of the coupling cover connection structure of the present invention;

[0015] Among them: 1. First coupler pin; 2. First mounting bolt; 3. Hook tail seat; 4. Car body frame; 5. Coupler mounting seat; 6. Coupler support cover; 7. Slotted nut; 8. Second mounting bolt; 9. Second coupler pin; 10. Top screw; 11. Lower bolt; 12. Mounting plate; 13. Reinforcement rib; 14. Wear pad. DETAILED DESCRIPTION

[0016] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0017] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0018] The coupler mounting seat is integrally machined and welded to the vehicle body chassis through a plate. The coupler tail seat is connected between the two plates of the coupler mounting seat through a coupler pin. The lower end of the coupler pin passes through the lower plate of the coupler mounting seat and is fixed by a support cover.

[0019] Reference Figures 2 to 4 The coupler cover connection structure includes a coupler mounting seat 5, a coupler cover 6, a slotted nut 7, a second mounting bolt 8, a second coupler pin 9 and a top screw 10.

[0020] The lower end of the second coupler pin 9 is provided with a lower bolt 11 . After the second coupler pin 9 passes through the coupler mounting seat 5 , the lower bolt 11 extends out of the outer side of the lower plate of the coupler mounting seat 5 .

[0021] The middle mounting position of the lower plate of the coupler mounting seat is first processed into a circle, and a part of the two sides of the circle are processed away to form a long strip protrusion. Mounting plates 12 are welded on both sides of the mounting seat, and reinforcing ribs 13 are provided at the corner positions of the mounting plates and the coupler mounting seat 5.

[0022] The whole of the coupler support cover is U-shaped, and the two sides are fixed to the two sides of the long strip protrusion of the lower plate of the coupler mounting seat 5 by the second mounting bolts 8, and then fixed by the top screw 10. A hole is provided in the middle of the coupler support cover, and the lower bolt 11 passes through the hole in the middle of the coupler support cover and is rotated by the slotted nut 7. The slotted nut 7 is in a relaxed state so that the coupler pin 9 can rotate freely. A wear pad 14 is provided between the coupler pin and the coupler support cover. When the coupler support cover 6 device is working, the lower bolt 11 and the slotted nut 7 complete the support of the second coupler pin 9 and release its free rotation, and keep the second coupler pin 9 in a fixed position, providing axial free rotation, and ensuring the effective connection and free rotation of the coupler and the vehicle body.

[0023] The hook support cover is U-shaped as a whole, with a bulge and a hole in the middle of the bottom, recessed on both sides, the middle position is connected to the lower bolts, and the recessed positions on both sides avoid the mounting plate to prevent assembly interference.

[0024] The hook cover connection structure fixes the lower hook cover to the hook mounting seat 5 through the second mounting bolt 8 to limit the horizontal position; the hook cover 6 is limited in height direction through the slotted nut 7. However, the lower bolt 11 of the hook pin of the present invention is an integrated structure with the second hook pin 9. The slotted nut 7 only limits the upper and lower positions, but does not limit the rotation of the hook pin. Therefore, the hook can rotate freely, releasing the friction generated with the car body when the hook passes through the curve, and the bolt will not be broken. Since there are horizontal and vertical tolerance gaps in the mounting hole of the car body hook mounting seat 5 and the second hook pin 9, in order to prevent fatigue wear caused by vibration gaps, a double top screw 10 structure is used to limit and fix the cover structure. At the same time, in order to ensure safety and prevent the bolts from loosening, a safety rope is used to limit the second mounting bolt 8. At the same time, a split pin is used to limit and protect the lower slotted nut 7.

Claims

1. A coupling cover connection structure, comprising a coupling mounting seat (5) and a second coupling pin (9), wherein a long strip-shaped protrusion is provided in the middle of the lower side of the lower plate of the coupling mounting seat, and a hole for mounting the second coupling pin (9) is provided on the coupling mounting seat (5) at the middle of the protrusion, wherein: It also includes a coupler support cover (6), the lower end of the second coupler pin (9) is provided with a lower bolt (11), after the second coupler pin (9) passes through the coupler mounting seat (5), the lower bolt (11) extends out of the outside of the coupler mounting seat (5); a hole is arranged in the middle of the coupler support cover (6), fixed to the lower side of the coupler mounting seat (5), the lower bolt passes through the middle hole of the coupler support cover (6) and then a slotted nut (7) is installed, the slotted nut (7) is in a relaxed state so that the second coupler pin (9) can rotate freely; the coupler support cover is U-shaped as a whole, and the two sides are fixed to the two sides of the long strip-shaped protrusion of the lower plate of the coupler mounting seat (5) by the second mounting bolts (8), and then fixed by double top screws (10).

2. A hook cover connection structure according to claim 1, characterized in that: Both sides of the long strip-shaped protrusion are fixedly connected to the mounting plate (12).

3. A hook cover connection structure according to claim 1, characterized in that: The middle position of the bottom of the hook support cover (6) is raised and has a hole, and recesses are provided on both sides for avoiding the installation plate.

4. A hook cover connection structure according to claim 2, characterized in that: Reinforcing ribs (13) are provided at the corner positions of the mounting plate and the coupler mounting seat (5).

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