Suspension mounting part for under-train equipment of high-speed motor train unit

Abstract

The utility model provides a suspension mounting part for equipment under a high-speed motor train unit, which belongs to the technical field of motor train equipment mounting and comprises a hanger, a supporting plate, a connecting plate, a protective plate, a mounting frame, a stud, a nut, a butt joint pipe, a first elastic washer and a second elastic washer. The force arm is prolonged, and acting force is prevented from being located on the same axis, so that a nut connected to the outer end of the stud in a sleeving mode is not prone to loosing outwards and vertically along threads of the stud, positive pressure which does not change along with external force is generated by the butt joint pipe between thread pairs, and friction force capable of preventing the thread pairs from rotating relatively is generated; the two groups of butt joint pipes which are oppositely arranged are pressed at the outer ends of the nuts at the two ends of the double-end bolt, the effect can be achieved by pressing a thread pair in two directions, even if one nut is loosened and fails, reliable connection can be guaranteed when the other nut is pressed by the two groups of butt joint pipes, and equipment hanging and hoisting are safer.

Description

Technical Field

[0001] The utility model relates to the technical field of motor vehicle equipment installation, in particular to a high-speed motor vehicle multiple unit undercarriage equipment suspension installation part. Background Art

[0002] With the rapid development of my country's railways, in order to effectively utilize the space inside the car and meet the needs of inspection, operation and maintenance, most EMUs install some large components of traction, auxiliary and braking equipment under the car. The train has to operate continuously at high speed for thousands of kilometers. The equipment under the car is subjected to alternating complex loads caused by factors such as air pressure, wheel-rail interaction, and self-excited vibration of the equipment under the car, which seriously endangers the operation safety of high-speed trains and the riding comfort of passengers. Various operating conditions have put forward higher requirements for the connection and fastening of the equipment under the car suspension part. Therefore, whether the fastening of the undercarriage components of modern high-speed EMUs is good is an important part of the safe operation of the train, supporting many important operating functions of the train and also related to the personal safety of passengers;

[0003] It has been found in actual use that the existing equipment suspension mounting parts have the following deficiencies:

[0004] Threaded fasteners are the most widely used fasteners in the undercar suspension system. Compared with other fasteners, their biggest advantage is that they are easy to disassemble and practical. Their biggest disadvantage is that they are easy to loosen under the action of impact, vibration or variable load. Therefore, elastic washers, double nuts, self-locking nuts and nylon insert locking nuts are generally used. However, under the conditions of impact, vibration and variable load, the bolts will loosen at first, resulting in a decrease in preload. As the number of vibrations increases, the loss of preload slowly increases, which will eventually lead to the loosening of the nuts and the failure of the threaded connection, affecting the safety of equipment suspension and hoisting.

[0005] Therefore, the present application provides a high-speed EMU undercarriage equipment suspension mounting component to meet the demand. Utility Model Content

[0006] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a suspension mounting part for equipment under the high-speed EMU.

[0007] The technical problem to be solved by the utility model is to provide a high-speed EMU undercarriage equipment suspension mounting component to solve the problems of the existing high-speed EMU undercarriage equipment suspension mounting components.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] A high-speed EMU undercarriage equipment suspension mounting part, comprising: a hanger, a support plate, a connecting plate, a protective plate, a mounting frame, stud bolts, nuts, a butt pipe, a first elastic washer and a second elastic washer, the inner upper end of the hanger is mounted with the support plate through the stud bolts, the outer side of the support plate is vertically welded with a connecting plate, the upper end of the connecting plate is horizontally welded with a protective plate, the two ends of the protective plate are mounted with mounting frames, the outer ends of the stud bolts are mounted with nuts, the outer ends of the stud bolts are also mounted with a butt pipe, the stud bolts are located on the outer side of the nuts and a first elastic washer is mounted, and the other end of the butt pipe is mounted with a second elastic washer.

[0010] Preferably, the butt joint is in a "U" shape, and the pipes on both sides of the butt joint are of different lengths.

[0011] Preferably, butt tubes are installed at both ends of the stud bolt, the butt tubes are located at the outer ends of the nut, and two groups of butt tubes are arranged opposite to each other.

[0012] Preferably, the inner wall of the pipe of the butt-joint pipe is provided with a threaded surface, and the butt-joint pipe and the stud bolt are threadedly connected.

[0013] Preferably, there is a gap between the butt joint pipe and the nut, and the first elastic washer is pressed between the butt joint pipe and the nut.

[0014] Preferably, a sleeve rod is provided at the other end of the butt joint pipe, and the diameter of the sleeve rod is smaller than the diameter of the butt joint pipe.

[0015] Preferably, one end of the sleeve rod of the butt joint tube passes through the hanger and upwardly connects with one end of the sleeve rod of another set of butt joint tubes, and the two sets of butt joint tubes are generally ring-shaped, and one end of the sleeve rod of the two sets of butt joint tubes is nested with several sets of second elastic washers.

[0016] Preferably, the second elastic washers are stacked on top of each other, and the other end of the second elastic washers is tightly pressed against the pipe opening of the butt pipe.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] 1. The "U"-shaped butt joint can be divided into two ends for connection, and the force arm can be extended to prevent the acting force from being on the same axis, so that the nut sleeved on the outer end of the stud bolt is not easy to loosen vertically outward along the thread of the stud bolt. The butt joint generates a positive pressure between the threaded pair that does not change with the external force, so as to generate a friction force that can prevent the relative rotation of the threaded pair. By installing a first elastic washer between the butt joint and the nut, the elastic force generated by the washer after being flattened is used to buffer the impact, vibration and variable load. The nut is supported by the butt joint to avoid the decrease of the preload force due to the loosening of the nut. The two sets of butt joints arranged relatively are pressed on the outer ends of the nuts at both ends of the stud bolt, which can realize the bidirectional compression of the threaded pair. Even if one nut is loose and fails, the other nut is pressed by the two sets of butt joints to ensure a reliable connection, making the equipment hanging and hoisting safer.

[0019] 2. One end of the sleeve rod of the butt-joint tube passes through the hanger and upwardly connects with one end of the sleeve rod of another set of butt-joint tubes, and the two sets of butt-joint tubes are in a ring shape as a whole. Several sets of second elastic washers are nested and installed at one end of the sleeve rods of the two sets of butt-joint tubes. The two sets of butt-joint tubes interact with each other. When subjected to impact, vibration and variable loads, they exert upper and lower forces on each other, which can not only buffer each other, but also exert force on the other end of the butt-joint tube, and fasten each other to prevent the butt-joint tube from loosening outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the split structure of the hanger and the butt-joint pipe of the utility model;

[0023] Figure 3 This is a schematic diagram of the specific structure of the butt joint pipe of the utility model;

[0024] Figure 4 For the utility model Figure 1 A is an enlarged schematic diagram of the structure.

[0025] [reference numerals]

[0026] 1-hanging bracket; 2-supporting plate; 3-connecting plate; 4-protective plate; 5-mounting frame; 6-stud bolt; 7-nut; 8-butt pipe; 9-first elastic washer; 10-second elastic washer; 801-sleeve rod.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 A high-speed EMU undercarriage equipment suspension mounting part shown in the embodiment of the utility model includes: a bracket 1, a support plate 2, a connecting plate 3, a protective plate 4, a mounting frame 5, a stud bolt 6, a nut 7, a butt pipe 8, a first elastic washer 9 and a second elastic washer 10. The inner upper end of the bracket 1 is mounted with the support plate 2 through the stud bolt 6, the outer side of the support plate 2 is vertically welded with the connecting plate 3, the upper end of the connecting plate 3 is horizontally welded with the protective plate 4, the two ends of the protective plate 4 are mounted with the mounting frame 5, the outer end of the stud bolt 6 is mounted with a nut 7, the outer end of the stud bolt 6 is also mounted with a butt pipe 8, the stud bolt 6 is located on the outer side of the nut 7 and is mounted with a first elastic washer 9, and the other end of the butt pipe 8 is mounted with a second elastic washer 10.

[0029] In this embodiment, the butt joint pipe 8 is in a "U" shape, and the lengths of the pipes on both sides of the butt joint pipe 8 are different. The "U"-shaped butt joint pipe 8 can be divided into two ends for connection, and the force arm is extended to prevent the forces from being on the same axis, so that the nut 7 sleeved on the outer end of the stud bolt 6 is not easy to loosen vertically outward along the thread of the stud bolt 6. The butt joint pipe 8 generates a positive pressure between the threaded pairs that does not change with external force, so as to generate a friction force that can prevent the threaded pairs from rotating relative to each other.

[0030] In this embodiment, docking tubes 8 are installed at both ends of the stud bolt 6. The docking tubes 8 are located at the outer ends of the nuts 7, and the two groups of docking tubes 8 are arranged opposite to each other. The two groups of docking tubes 8 arranged opposite to each other are pressed on the outer ends of the nuts 7 at both ends of the stud bolt 6, and can be achieved by bidirectionally tightening the threaded pair. Even if one nut 7 loosens and fails, the other nut 7 is pressed by the two groups of docking tubes 8 to ensure a reliable connection, making the equipment hanging and hoisting safer.

[0031] In this embodiment, the inner wall of the pipe of the butt joint 8 is provided with a threaded surface, and the butt joint 8 is threadedly connected to the stud bolt 6 , so that the butt joint 8 can be screwed and installed along the stud bolt 6 extending out of the outer end of the nut 7 .

[0032] In this embodiment, there is a gap between the butt tube 8 and the nut 7, and the first elastic washer 9 is pressed between the butt tube 8 and the nut 7. By installing the first elastic washer 9 between the butt tube 8 and the nut 7, the elastic force generated after the washer is flattened is used to buffer the impact, vibration and variable load, and the nut 7 is supported by the butt tube 8 to avoid a decrease in the preload force due to loosening of the nut 7.

[0033] In this embodiment, a sleeve rod 801 is provided at the other end of the butt-joint pipe 8 , and the diameter of the sleeve rod 801 is smaller than the diameter of the butt-joint pipe 8 , so that the second elastic washer 10 can be installed on the sleeve rod 801 .

[0034] In this embodiment, one end of the sleeve rod 801 of the butt-jointing tube 8 passes through the hanger 1 and upwardly connects with one end of the sleeve rod 801 of another group of butt-jointing tubes 8, and the two groups of butt-jointing tubes 8 are generally ring-shaped, and a plurality of groups of second elastic washers 10 are nested and installed on one end of the sleeve rod 801 of the two groups of butt-jointing tubes 8. The two groups of butt-jointing tubes 8 interact with each other, and when subjected to impact, vibration and variable loads, they exert forces on each other at the upper and lower ends, which not only buffer each other, but also exert force on the other end of the butt-jointing tube 8, and are tightly fastened to prevent the butt-joining tube 8 from loosening outward.

[0035] In this embodiment, the second elastic washers 10 are stacked one on another, and the other end of the second elastic washers 10 is pressed tightly against the pipe opening of the butt joint 8 . The second elastic washers 10 can provide buffering at the connection between the two sets of butt joints 8 .

Claims

1. A high-speed EMU undercarriage equipment suspension mounting member, characterized in that: include: A hanger (1), a support plate (2), a connecting plate (3), a protective plate (4), a mounting frame (5), a stud bolt (6), a nut (7), a butt pipe (8), a first elastic washer (9) and a second elastic washer (10); the inner upper end of the hanger (1) is mounted with the support plate (2) via the stud bolt (6); the outer side of the support plate (2) is vertically welded with a connecting plate (3); the upper end of the connecting plate (3) is horizontally welded with a protective plate (4); the two ends of the protective plate (4) are mounted with a mounting frame (5); the outer end of the stud bolt (6) is mounted with a nut (7); the outer end of the stud bolt (6) is also mounted with a butt pipe (8); the stud bolt (6) is located on the outer side of the nut (7) and is mounted with a first elastic washer (9); the other end of the butt pipe (8) is mounted with a second elastic washer (10).

2. The high-speed train undercarriage equipment suspension mounting member according to claim 1, characterized in that: The butt-joint pipe (8) is in a "U" shape, and the pipes on both sides of the butt-joint pipe (8) have different lengths.

3. The high-speed train undercarriage equipment suspension mounting member according to claim 1, characterized in that: Both ends of the stud bolt (6) are provided with butt-jointing pipes (8), the butt-jointing pipes (8) are located at the outer ends of the nuts (7), and two groups of butt-jointing pipes (8) are arranged opposite to each other.

4. The high-speed train undercarriage equipment suspension mounting member according to claim 1, characterized in that: The inner wall of the pipe of the butt-joint pipe (8) is provided with a threaded surface, and the butt-joint pipe (8) and the stud bolt (6) are threadedly connected.

5. The high-speed train undercarriage equipment suspension mounting member according to claim 1, characterized in that: There is a gap between the butt-joint tube (8) and the nut (7), and a first elastic washer (9) is pressed between the butt-joint tube (8) and the nut (7).

6. The high-speed train undercarriage equipment suspension mounting member according to claim 1, characterized in that: The other end of the butt-joint pipe (8) is provided with a sleeve rod (801), and the diameter of the sleeve rod (801) is smaller than the diameter of the butt-joint pipe (8).

7. The high-speed train undercarriage equipment suspension mounting member according to claim 6, characterized in that: One end of the sleeve rod (801) of the butt-jointing tube (8) passes through the hanger (1) and is connected upward to one end of the sleeve rod (801) of another group of butt-jointing tubes (8), and the two groups of butt-jointing tubes (8) are in a ring shape as a whole, and a plurality of groups of second elastic washers (10) are nested and installed at one end of the sleeve rods (801) of the two groups of butt-jointing tubes (8).

8. The high-speed train undercarriage equipment suspension mounting member according to claim 7, characterized in that: The second elastic washers (10) are stacked on top of each other, and the other end of the second elastic washers (10) is tightly pressed against the pipe opening of the butt pipe (8).

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