CN108454647A - 100% low-floor suspension device for gear box - Google Patents

Abstract

The invention discloses a hanging device for a 100% low-floor gearbox. The device is used to connect the frame hanging seat and the gear box hanging seat, including the boom rod body, the upper centering bush, the lower centering bush, the upper elastic bearing, the lower elastic bearing and the lock nut, and the boom rod body is a screw Structure, the upper centering bush and the lower centering bush are both set on the boom rod body, the upper centering bush is set on the upper part of the boom rod body, and is detachably connected to the upper end of the lower centering bushing, and the upper elastic bearing is set on the lower The upper part of the centering bush, the lower elastic bearing is set on the lower part of the lower centering bush, the lock nut is set on the threaded section of the lower part of the boom rod body, and the frame hanging seat is detachably set on the lower centering between the upper elastic bearing and the lower elastic bearing On the bushing, the gearbox hanging seat is detachably set on the boom rod body between the lower centering bush and the lock nut. The suspension device for the 100% low-floor gear box of the present invention has the advantages of simple structure, convenient disassembly and assembly, good shock absorption performance, and fully meets the use requirements.

Description

100% Low Floor Gear Box Suspension

technical field

The invention relates to the technical field of rail vehicle transmission systems, in particular to a suspension device for a 100% low-floor gearbox.

Background technique

100% low-floor rail vehicles refer to rail transit vehicles with a height of 350mm or less between the floor surface and the rail surface. The cost of low-floor rail vehicles is lower during infrastructure construction, but due to space constraints, 100% low-floor rail vehicles cancel traditional axles and use independent wheel sets, so that the bogie differs greatly from traditional bogies, so it needs Change the suspension device for the gearbox to meet the requirements of use, so that the suspension device for the gearbox can withstand the dynamic load generated by the gearbox during the operation of the train, and ensure that the connection between the bogie frame and the gearbox is stable. The device also needs to have a vertical adjustment function to ensure the vertical installation position of the bogie frame and the gearbox, and the size of the suspension device must also meet the limited installation space requirements.

Therefore, how to make the suspension device for 100% low-floor gearboxes able to withstand the dynamic load generated by the gearbox, and at the same time have a vertical adjustment function, and have a simple structure and easy disassembly and assembly has become a technical problem to be solved urgently by those skilled in the art .

Contents of the invention

In order to solve the above-mentioned technical problems in the prior art, the present invention provides a suspension device for 100% low-floor gear boxes with simple structure, easy disassembly and assembly, good shock absorption performance and vertical adjustment function.

For this reason, the invention discloses a suspension device for a 100% low-floor gearbox. The 100% low-floor gear box hanging device is used to connect the frame hanging seat and the gearbox hanging seat, including the boom rod body, and also includes the upper centering bush, the lower centering bush, the upper elastic bearing, the lower elastic bearings and lock nuts;

The rod body of the boom is a screw structure;

Both the upper centering bush and the lower centering bush are set on the boom body, the upper centering bush is arranged on the upper part of the boom body, and the upper centering bush is detachable connected to the upper end of the lower centering bush;

The upper elastic bearing is set on the upper part of the lower centering bush, and the lower elastic bearing is set on the lower part of the lower centering bush;

The lock nut is arranged on the threaded section at the lower part of the boom body;

The frame hanging seat is detachably set on the lower centering bush between the upper elastic bearing and the lower elastic bearing, and the gear box hanging seat is detachably set on the lower centering bush. On the rod body of the boom between the lower end of the bushing and the upper end of the locking nut.

Further, in the hanging device for 100% low-floor gearbox, the lower part of the upper centering bush is provided with a first convex stop, and the upper end of the upper elastic bearing is provided with a first concave stop. The upper centering bush and the upper elastic bearing realize positioning connection through the cooperation of the first convex notch and the first notch notch.

Further, in the hanging device for the 100% low-floor gearbox, the lower part of the lower centering bush is provided with a second convex stop, and the lower end of the lower elastic bearing is provided with a second concave stop. The lower centering bush and the lower elastic bearing realize positioning connection through the cooperation of the second convex notch and the second notch notch.

Further, in the hanging device for the 100% low-floor gearbox, the inner hole of the first protrusion is provided with an internal thread, and the upper part of the lower centering bush is provided with a thread that is compatible with the internal thread. The upper centering bush is detachably fixed to the upper end of the lower centering bush through the cooperation of the inner thread and the outer thread.

Further, in the suspension device for 100% low-floor gearbox, the lower end of the upper elastic bearing has a first end surface protrusion, the upper end of the lower elastic bearing has a second end surface protrusion, and the first end surface protrusion The protrusion and the second end surface protrusion are respectively placed in the upper and lower grooves of the frame hanging seat for fixing and positioning the frame hanging seat.

Further, the suspension device for the 100% low-floor gearbox further includes a lock nut box, and the lock nut is built into the lock nut box.

Further, in the hanging device for the 100% low-floor gearbox, the end face of the lock nut box is provided with a rectangular inner hole perpendicular to the plane where the end face of the lock nut box is located along the central axis, and the inner hole of the rectangle is The distance between the two long sides of the hole is greater than the distance between the two diagonal sides of the locking nut, and the locking nut is built into the rectangular inner hole.

Further, in the hanging device for the 100% low-floor gearbox, the end surface of the lock nut box is provided with two The first locating pin holes, the two first locating pin holes are distributed diagonally, and the two first locating pin holes are paired and connected with the locating pin holes on the gear box hanging seat through the locating pins.

Further, in the hanging device for the 100% low-floor gearbox, a cover plate is also included, the cover plate is arranged on the lower end surface of the lock nut box, and the cover plate is fastened to the The lock nut box is used to prevent the lock nut and the positioning pin from falling.

Further, in the hanging device for 100% low-floor gearbox, an adjusting gasket is detachably arranged between the lower end surface of the lower centering bush and the upper end surface of the gear box hanging seat, so that There can be one or more than one adjusting shims.

The main advantages of the technical solution of the present invention are as follows:

The hanging device for 100% low-floor gearbox provided by the present invention is provided with an upper elastic bearing and a lower elastic bearing, and is centered and tightly pressed on both ends of the frame hanging seat, so that the device has a good vibration damping effect and can bear gears The dynamic load generated by the box; the lower end face of the lower centering bush and the upper end face of the gear box hanging seat are detachably provided with adjusting gaskets, which can realize the vertical hanging of the frame hanging seat and the gear box hanging seat Distance adjustment; the lock nut is built into the lock nut box, which not only facilitates the installation of the lock nut, but also plays a role in preventing loosening. At the same time, the lock nut box and the gear box hanging seat are positioned and installed through the positioning pin The centering of the lock nut and the boom body is guaranteed; the device has a simple structure, takes up little space, is easy to install and disassemble, and can fully meet the hanging connection requirements between the gearbox and the frame.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a suspension device for a 100% low-floor gearbox provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the assembly of the lock nut and the lock nut box in the suspension device for the 100% low-floor gearbox shown in Fig. 1;

Fig. 3 is a sectional view along line A-A of Fig. 2, in which the cover plate is also shown.

Explanation of reference signs:

1- Boom rod body, 2- Upper centering bush, 2-1- The first convex seam, 2-1-1- Internal thread, 3- Upper elastic bearing, 3-1- The first concave seam, 3 -2-Protrusion on the first end face, 4-Lower centering bush, 4-1-Second convex seam, 4-2-External thread, 5-Lower elastic bearing, 5-1-Second concave seam, 5-2-Second end surface protrusion, 6-Adjusting washer, 7-Nut washer, 8-Lock nut box, 8-1-Rectangular inner hole, 8-2-First positioning pin hole, 8-3 -First bolt through hole, 9-lock nut, 10-bolt, 11-cover plate, 12-locating pin, C-gearbox hanging seat, C-1-locating pin hole, C-2-second hanger Hanging hole, C-3-bolt hole, G-frame hanging seat, G-1-first hanging hole.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a suspension device for a 100% low-floor gearbox provided by an embodiment of the present invention. As shown in Figure 1, the hanging device for 100% low-floor gearbox of this embodiment includes a boom body (1), an upper centering bush (2), a lower centering bush (4), an upper elastic bearing ( 3), lower elastic bearing (5) and lock nut (9). Wherein, the boom body (1) can be a screw structure, the upper centering bush (2) and the lower centering bush (4) are both set on the boom body (1), and the upper centering bush (2) is set on The upper part of the boom body (1), the upper end of the upper centering bush (2) can be limited by the head shaft end of the boom body (1), and the lower end of the upper centering bush (2) is detachably connected At the upper end of the lower centering bush (4), the upper elastic bearing (3) is set on the upper part of the lower centering bush (4), the lower elastic bearing (5) is set on the lower part of the lower centering bush (4), and the lock nut ( 9) The threaded section arranged at the bottom of the boom body (1). When the hanging device for the 100% low-floor gearbox needs to hang and connect the gearbox and the frame bogie, the frame hanging seat (G) can be detachably set on the upper elastic through the first hanging hole (G-1). On the lower centering bush (4) between the bearing (3) and the lower elastic bearing (5), the gear box hanging seat (C) can be detachably set in the lower centering bush through the second hanging hole (C-2). On the boom rod body (1) between the lower end of the bushing (4) and the upper end of the lock nut (9), a nut can be placed between the upper end surface of the lock nut (9) and the lower end surface of the gear box hanging seat (C). Gasket (7), through the knob lock nut (9), the frame hanging seat (G) and the gearbox hanging seat (C) are fastened to the hanging device, so as to realize the hanging of the gearbox and the frame connect.

Further, in order to enable the upper elastic bearing (3) and the lower elastic bearing (5) to be positioned accurately, so as to ensure the centering. Specifically, the lower part of the upper centering bush (2) is provided with a first protrusion (2-1), and the upper end of the upper elastic bearing (3) is provided with a first recess matched with the first protrusion (2-1). The spigot (3-1), the upper centering bush (2) and the upper elastic bearing (3) can be positioned through the cooperation of the first convex spigot (2-1) and the first concave spigot (3-1) connection; in the same way, a second protrusion (4-1) is provided at the lower part of the lower centering bush (4), and a first protrusion matched with the second protrusion (4-1) is provided at the lower end of the lower elastic bearing (5). The second concave seam (5-1), the lower centering bush (4) and the lower elastic bearing (5) can cooperate with the second convex seam (4-1) and the second concave seam (5-1) Implement positioning connections.

As mentioned above, the lower end of the upper centering bush (2) is detachably connected to the upper end of the lower centering bush (4). The disassembly and assembly of the upper centering bush (2) can be provided with an internal thread (2-1-1) in the inner hole of the first convex stop (2-1), and the upper part of the lower centering bush (4) can be An external thread (4-2) matching the internal thread (2-1-1) is provided, and the upper centering bush (2) is connected with the external thread (4-2) through the internal thread (2-1-1) The fit is detachably fixed on the upper end of the lower centering bush (4).

As mentioned above, when the 100% low-floor gear box suspension device of this embodiment is in use, the frame suspension seat (G) is installed on the boom body ( 1) On the top, in order to ensure the firm installation and accurate positioning of the frame hanging seat (G), the lower end of the upper elastic bearing (3) can be provided with a first end surface protrusion (3-2), and the upper end of the lower elastic bearing (5) can be provided with There is a second end face protrusion (5-2), the first end face protrusion (3-2) and the second end face protrusion (5-2) can be respectively placed in the upper groove and the lower end of the frame hanging seat (G). In the groove, to fix the frame hanging seat (G).

Fig. 2 is a schematic diagram of assembly of a lock nut and a lock nut box in the suspension device for a 100% low-floor gearbox shown in Fig. 1 . As shown in Fig. 1 and Fig. 2, the suspension device for 100% low-floor gear box of this embodiment also includes a lock nut box (8), and the lock nut (9) is built in the lock nut box (8). Specifically, the end face of the lock nut box (8) can be provided with a rectangular inner hole (8-1) perpendicular to the plane where the end face of the lock nut box (8) is located along the central axis, and the rectangular inner hole (8-1) is two long The distance between the sides is greater than the distance between the two diagonal sides of the lock nut (9), so that the lock nut (9) is installed in the rectangular inner hole (8-1) to facilitate the lock nut (9) Loosening and falling off, preferably, the rectangular inner hole (8-1) is arranged in the middle of the lock nut box (8).

Fig. 3 is a sectional view along line A-A of Fig. 2, in which the cover plate is also shown. As shown in Figure 2 and Figure 3, in order to ensure the accurate positioning and installation of the lock nut box (8) and avoid interference between the lock nut box (8) and the lock nut (9), the end surface of the lock nut box (8) Two first positioning pin holes (8-2) perpendicular to the plane where the end face of the lock nut box (8) is located and passing through the lock nut box (8) can be provided, and the two first positioning pin holes (8-2) They are distributed diagonally and are compatible with the positioning pin holes (C-1) on the gearbox suspension seat (C). The two first positioning pin holes (8-2) can be connected with the gear through the positioning pins (12) The positioning pin holes (C-1) on the box hanging seat (C) are paired and connected to ensure the accurate installation position of the lock nut box (8); at the same time, the end surface of the lock nut box (8) can also be provided with a vertical Two first bolt through holes (8-3) on the plane where the end face of the lock nut box (8) is located and matched with the bolt holes (C-3) on the gear box suspension seat (C), two second bolt through holes (8-3) One bolt through hole (8-3) is distributed diagonally, two first bolt through holes (8-3) and two first positioning pin holes (8-2) are distributed at four corners, two first bolt through holes (8-3) can be paired with the bolt hole (C-3) on the gear box hanger (C) through the bolt (10) to realize the locking nut box (8) and the gear box hanger (C) fixed connection.

Further, in order to prevent the lock nut (9) and the positioning pin (12) from falling, the hanging device for the 100% low-floor gearbox of this embodiment also includes a cover plate (11), and the cover plate (11) is arranged on the lock Tighten the lower end surface of the nut box (8), specifically, the end surface of the cover plate (11) is provided with a through hole perpendicular to the plane where the end surface of the cover plate (11) is located and adapted to the bolt (10), and the bolt (10) passes through the cover The through hole of the plate (11) securely connects the cover plate (11) to the lock nut box (8).

As shown in Figure 1, in order to realize the adjustability of the vertical hanging distance between the frame hanging seat (G) and the gearbox hanging seat (C), the lower end surface of the lower centering bush (4) and the gear box hanging Between the grooves at the upper end of the hanger (C) are detachably provided with adjusting shims (6). There can be one or more adjusting shims (6). The spacer (6) is removed from the unit.

The suspension device for 100% low-floor gear box provided by the present invention is provided with an upper elastic bearing (3) and a lower elastic bearing (5), and the two are centered and tightly pressed on the upper and lower ends of the frame suspension seat (G), The hanging device has a good vibration damping effect and can withstand the dynamic load generated by the gearbox; the lower end surface of the lower centering bush (4) and the upper end surface of the gear box suspension seat (C) are detachably provided with adjustment The spacer (6) can realize the adjustment of the vertical hanging distance between the frame suspension seat (G) and the gearbox suspension seat (C); at the same time, the lock nut (9) is built into the lock nut box (8 ), which not only facilitates the installation of the lock nut (9), but also plays an anti-loosening effect, and the lock nut box (8) and the gear box hanging seat (C) are positioned and installed through the positioning pin (12), ensuring that The centering of the lock nut (9) and the boom body (1) is ensured; the device has a simple structure, takes up little space, is easy to install and disassemble, and can fully meet the hanging connection requirements between the gearbox and the frame.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. In addition, the terms "front", "rear", "left", "right", "upper", and "lower" herein refer to the placement states shown in the drawings.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A suspension device for a 100% low-floor gearbox, which is used to connect the frame suspension seat (G) and the gearbox suspension seat (C), comprising a boom body (1), characterized in that it also includes an upper Centering bush (2), lower centering bush (4), upper elastic bearing (3), lower elastic bearing (5) and lock nut (9); The boom body (1) is a screw structure; Both the upper centering bush (2) and the lower centering bush (4) are set on the boom body (1), and the upper centering bush (2) is set on the boom body (1) the upper part, the upper centering bush (2) is detachably connected to the upper end of the lower centering bush (4); The upper elastic bearing (3) is set on the upper part of the lower centering bush (4), and the lower elastic bearing (5) is set on the lower part of the lower centering bush (4); The lock nut (9) is arranged on the threaded section at the bottom of the boom body (1); The frame hanger (G) is detachably set on the lower centering bush (4) between the upper elastic bearing (3) and the lower elastic bearing (5), and the gear box hangs The hanger (C) is detachably set on the boom body (1) between the lower end of the lower centering bush (4) and the upper end of the lock nut (9). 2. The hanging device for 100% low-floor gearbox according to claim 1, characterized in that, the lower part of the upper centering bush (2) is provided with a first convex stop (2-1), and the The upper end of the upper elastic bearing (3) is provided with a first concave stop (3-1), and the upper centering bush (2) and the upper elastic bearing (3) pass through the first convex stop (2-1) 1) Cooperate with the first notch (3-1) to realize positioning connection. 3. The hanging device for 100% low-floor gearbox according to claim 1, characterized in that, the lower part of the lower centering bush (4) is provided with a second convex stop (4-1), and the The lower end of the lower elastic bearing (5) is provided with a second concave stop (5-1), and the lower centering bush (4) and the lower elastic bearing (5) pass through the second convex stop (4-1). 1) Cooperate with the second notch (5-1) to realize positioning connection. 4. The hanging device for 100% low-floor gearboxes according to claim 2, characterized in that, the inner hole of the first protrusion (2-1) is provided with an internal thread (2-1-1), so The upper part of the centering bush (4) is provided with an external thread (4-2) that is compatible with the internal thread (2-1-1), and the upper centering bush (2) passes through the The internal thread (2-1-1) cooperates with the external thread (4-2) and is detachably fixed on the upper end of the lower centering bush (4). 5. The suspension device for 100% low-floor gearbox according to claim 1, characterized in that, the lower end of the upper elastic bearing (3) has a first end surface protrusion (3-2), and the lower elastic bearing (5) The upper end has a second end face protrusion (5-2), and the first end face protrusion (3-2) and the second end face protrusion (5-2) are respectively placed on the frame hanging seat In the upper and lower grooves of (G), it is used to fix and position the frame hanging seat (G). 6. The hanging device for a 100% low-floor gearbox according to claim 1, characterized in that it further comprises a lock nut box (8), and the lock nut (9) is built into the lock nut box (8). 7. The hanging device for a 100% low-floor gearbox according to claim 6, characterized in that, the end face of the lock nut box (8) is provided with a ring perpendicular to the lock nut box (8) along the central axis. The rectangular inner hole (8-1) on the plane where the end face is located, the distance between the two long sides of the rectangular inner hole (8-1) is greater than the distance between the two diagonal sides of the lock nut (9), so The lock nut (9) is built into the rectangular inner hole (8-1). 8. The hanging device for 100% low-floor gearbox according to claim 7, characterized in that, the end surface of the lock nut box (8) is provided with Plane and through the two first positioning pin holes (8-2) of the lock nut box (8), the two first positioning pin holes (8-2) are diagonally distributed, and the two first positioning pin holes (8-2) A locating pin hole (8-2) is mated and connected with the locating pin hole (C-1) on the gear case hanging seat (C) through the locating pin (12). 9. The hanging device for a 100% low-floor gearbox according to claim 8, characterized in that it further comprises a cover plate (11), and the cover plate (11) is arranged on the lock nut box (8) On the lower end face, the cover plate (11) is fastened to the lock nut box (8) through bolts (10) to prevent the lock nut (9) and the positioning pin (12) from falling . 10. The suspension device for a 100% low-floor gearbox according to any one of claims 1 to 9, characterized in that the lower end surface of the lower centering bush (4) is suspended from the gearbox Adjusting gaskets (6) are detachably arranged between the upper end faces of the seat (C), and there may be one or more than one adjusting gaskets (6).