Installation method of railway vehicle coupler buffer device

Abstract

The invention provides an installation method of a railway vehicle coupler buffer device, and relates to the technical field of coupler buffer device installing.The installation method comprises the steps that an abutting bolt and a check block capable of being in threaded connection with the abutting bolt are obtained; a buffer device, a buffer slave plate and a stop block are arranged in the coupler yoke, so that the stop block is in contact with one end of the coupler yoke; the buffer device is pre-compressed, and the buffer slave plate is propped through the propping bolt penetrating through the baffle, so that the pre-compressed state of the buffer device is kept; the coupler yoke provided with the pre-compressed buffering device is installed on a vehicle body; the abutting bolt and the check block are detached; installing a car coupler; the problem that in the prior art, a small technological cushion block is adopted for assisting installation of the coupler buffering device, and the small technological cushion block is prone to displacement or difficult to take out is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of coupler buffer device installation, and more specifically, relates to a method for installing a rail vehicle coupler buffer device. Background Art

[0002] The coupler and buffer form a coupler buffer, a crucial component of rail vehicles. It connects rail vehicles and transmits and mitigates the traction and impact forces generated during vehicle operation or shunting. To increase the coupler's swing angle during coupling, some rail vehicles utilize a coupler buffer with a convex arc-shaped hooktail and a concave arc-shaped follower plate.

[0003] The coupler buffer device of the flat hooktail coupler of the existing rail vehicle is installed by integral press-fitting and integral loading. However, the coupler buffer device with a convex arc surface hooktail coupler and a concave arc surface follower plate structure has an arc-shaped gap between the convex arc surface hooktail coupler and the concave arc surface follower plate, which is small in the middle and large on both sides. According to the existing installation method, the coupler buffer device is assembled into an integral structure before being loaded onto the vehicle. In order to ensure that the follower plate and the buffer device in the hooktail frame can meet the size of the coupler box, a small process pad is installed in the arc-shaped gap. The small process pad is used to push the follower plate backward and compress the buffer device. This installation method has the following problems: during transportation or installation, the small process pad is easily displaced, resulting in a smaller compression amount of the buffer device, and then the coupler buffer device is difficult to install or cannot be installed when loaded onto the vehicle; after loading, the coupler box is a small space, and the small process pad is difficult to remove. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for installing a rail vehicle coupler buffer device in response to the deficiencies in the prior art, so as to solve the problem in the prior art of using small process pads to assist in the installation of the coupler buffer device, which is prone to displacement or difficult to remove.

[0005] In order to achieve the above object, the present invention provides a method for installing a rail vehicle coupler buffer device, comprising:

[0006] Obtaining abutting bolts and a stopper capable of being threadably connected to the abutting bolts;

[0007] Installing the buffer device, the buffer plate and the stopper into the hook tail frame so that the stopper contacts one end of the hook tail frame;

[0008] Pre-compressing the buffer device and supporting the buffer plate with the supporting bolt passing through the baffle to maintain the pre-compressed state of the buffer device;

[0009] Install the hook tail frame with the pre-compressed buffer device onto the vehicle body;

[0010] Remove the abutting bolt and the stopper;

[0011] Install the coupler.

[0012] Optionally, the length of the stop block is greater than the width of the one end of the hook tail frame, and a raised limiting portion is respectively provided at both ends of the stop block in the length direction. When the stop block is installed in the hook tail frame, the two limiting portions are clamped on the two outer sides of the one end of the hook tail frame in the width direction.

[0013] Optionally, when the abutting bolt passes through the baffle and is threadedly connected to the baffle, a T-shaped structure is formed.

[0014] Optionally, the buffer device is pre-compressed by a press, and the abutting bolt is tightened in the pre-compressed state of the buffer device.

[0015] Optionally, the buffer device, after being pre-compressed, is equal to or shorter than the length of the buffer plate and the length of the inner cavity of the coupler box.

[0016] Optionally, installing the hook tail frame equipped with the pre-compressed buffer device onto the vehicle body includes:

[0017] Place the hook tail frame with the pre-compressed buffer device on the lifting trolley;

[0018] Move the lifting trolley to the bottom of the coupler box;

[0019] Lift the coupler frame with the pre-compressed buffer device installed and allow it to enter the coupler box;

[0020] Install the tail frame support plate.

[0021] Optionally, installing the coupler includes:

[0022] Lift and move the coupler;

[0023] Inserting the hook tail of the coupler into the opening at one end of the hook tail frame;

[0024] Install the coupler pin.

[0025] Optionally, after installing the coupler, the method further includes: installing a coupler joist.

[0026] The present invention provides a method for installing a coupler buffer device of a railway vehicle, and its beneficial effects are as follows: the method for installing the coupler buffer device of a railway vehicle is designed with a top-butting bolt and a stopper threadedly connected thereto, the stopper can be installed into the coupler tail frame together with the buffer device and the buffer follower plate, and the stopper can contact one end of the coupler tail frame inside the coupler tail frame through the stopper to form a limit fit, after the buffer device is pre-compressed, the top-butting bolt passes through the open curd baffle at one end of the coupler tail frame and can pass through the baffle to press against the buffer follower plate, thereby realizing the top-butting limit of the buffer follower plate and the buffer device in the pre-compressed state, and stably and reliably maintaining the buffer device pre-compression state; and, the coupler tail frame with the buffer device installed in the pre-compression state is installed separately from the coupler, the coupler tail frame with the buffer device installed in the pre-compression state is first loaded onto the vehicle to ensure that it can be smoothly loaded into the coupler box, and then the top bolts and the stop blocks are removed to free up the space in the opening at one end of the coupler tail frame, and then the coupler is installed; in this way, the overall installation method of the coupler buffer device using small process pads is replaced, and the use of small process pads is avoided, which not only improves the reliability and success rate of the installation method, but also the position and removal method of the top bolts and the stop blocks are much easier than those of the small process pads.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0029] Figure 1 A flow chart of a method for installing a rail vehicle coupler buffer device according to an embodiment of the present invention is shown.

[0030] Figure 2 A schematic diagram showing the connection between abutting bolts and a stopper in a method for installing a rail vehicle coupler buffer device according to an embodiment of the present invention is shown.

[0031] Figure 3 A schematic diagram of the installation process of a method for installing a rail vehicle coupler buffer device according to an embodiment of the present invention is shown.

[0032] Description of reference numerals:

[0033] 1. Abutment bolt; 2. Stop block; 3. Buffer device; 4. Buffer follower plate; 5. Hook frame; 6. Coupler; 7. Limiting part; 8. Operating part; 9. Hook frame support plate and first fastening component; 10. Hook pin and pin bolt assembly; 11. Coupler support beam and second fastener. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0035] like Figure 1 As shown, the present invention provides a method for installing a rail vehicle coupler buffer device, comprising:

[0036] Obtain abutting bolt 1 and a stopper 2 capable of being threadedly connected to the abutting bolt 1;

[0037] Install the buffer device 3, the buffer plate 4 and the stopper 2 into the hook tail frame 5 so that the stopper 2 contacts one end of the hook tail frame 5;

[0038] The buffer device 3 is pre-compressed, and the buffer plate 4 is supported by the supporting bolt 1 penetrating the baffle to maintain the pre-compressed state of the buffer device 3;

[0039] Install the hook tail frame 5 with the pre-compressed buffer device 3 installed on the vehicle body;

[0040] Remove the top bolt 1 and the stopper 2;

[0041] Install coupler 6.

[0042] Specifically, in order to solve the problem that small process pads are used to assist in the installation of coupler buffer devices in the prior art, and the small process pads are easily displaced or difficult to remove, the installation method of the rail vehicle coupler buffer device provided by the present invention is designed with a push-on bolt 1 and a stopper 2 threadedly connected thereto, and the stopper 2 can be installed into the hook tail frame 5 together with the buffer device 3 and the buffer follower plate 4, and the stopper 2 can contact with one end of the hook tail frame 5 inside the hook tail frame 5 to form a limiting fit. After the buffer device 3 is pre-compressed, the push-on bolt 1 passes through the open curd baffle at one end of the hook tail frame 5 and can pass through the baffle and press against the buffer follower plate 4, thereby realizing the push-on limiting of the buffer follower plate 4 and the buffer device 3 in the pre-compressed state. , stably and reliably maintain the pre-compression state of the buffer device 3; and, the hook tail frame 5 and the coupler 6 with the buffer device 3 in the pre-compression state installed are installed separately, and the hook tail frame 5 with the buffer device 3 in the pre-compression state is first loaded onto the vehicle to ensure that it can be smoothly loaded into the coupler box, and then the top bolt 1 and the stop block 2 are removed to free up the space in the opening at one end of the hook tail frame 5, and then the coupler 6 is installed; in this way, the overall installation method of the coupler buffer device using small process pads is replaced, and the use of small process pads is avoided, which not only improves the reliability and success rate of the installation method, but also the position and removal method of the top bolt 1 and the stop block 2 are much easier than those of small process pads.

[0043] Optionally, the length of the stop block 2 is greater than the width of one end of the hook tail frame 5, and a raised limiting portion 7 is provided at each end of the stop block 2 in the length direction. When the stop block 2 is installed in the hook tail frame 5, the two limiting portions 7 are stuck on the two outer sides in the width direction of one end of the hook tail frame 5.

[0044] Specifically, an opening is provided at one end of the hook tail frame 5, which can accommodate the installation of the hook tail of the coupler 6. The two ends of the stopper 2 in the length direction are limited by the two side walls in the width direction of the opening, and the two raised limiting parts 7 are respectively located on the outside of the two side walls in the width direction of the opening to prevent the stopper 2 from moving laterally. The opening can be used to insert the top bolt 1, which is threadedly engaged with the threaded hole in the middle of the stopper 2, and one end of the top bolt 1 can be screwed out of the stopper 2 to support the buffer plate 4.

[0045] Optionally, when the abutting bolt 1 passes through the baffle and is threadedly connected to the baffle, a T-shaped structure is formed.

[0046] Specifically, such as Figure 2 As shown, the top bolt 1 is threadedly connected to the baffle. The top bolt 1 and the baffle can be made of 20 forged steel. After machining, T38×6 external threads and threaded holes are respectively processed at the connection parts of the top bolt 1 and the baffle 2. After flaw detection and no cracks, the hardness reaches HRC40~45 after tempering treatment; after the top bolt 1 and the baffle are assembled, the overall structure is T-shaped, and the baffle can be installed between the buffer plate 4 at the end of the pre-compressed buffer device 3 and one end of the hook tail frame 5 to form a stable limiting structure.

[0047] In this embodiment, one end of the supporting bolt 1 is used to support the buffer plate 4, and the other end of the supporting bolt 1 is provided with an operating part 8, which can be cooperated with a wrench to facilitate the tightening of the supporting bolt 1.

[0048] Optionally, the buffer device 3 is pre-compressed by a press, and the abutting bolt 1 is tightened in the pre-compressed state of the buffer device 3 .

[0049] Specifically, the pre-compression of the buffer device 3 uses a press to provide pressure, which saves manpower and improves work efficiency. After the press compresses the buffer device 3, the push bolt 1 is tightened and the push bolt 1 is used to support the buffer plate 4, avoiding the transmission of the thread between the push bolt 1 and the block 2, which can reduce the material requirements and increase the service life.

[0050] In this embodiment, when the buffer device 3 is pre-compressed, a matching tooling and a pressure block can be set on the press to limit the hook tail frame 5 through the tooling, and an auxiliary pushing structure or a clamping structure can also be set to assist the buffer device 3 to enter the hook tail frame 5. The pressure block is connected to the pressure head of the press, and two outward-extending pressure plates are set at intervals on the side of the pressure block away from the pressure head. The pressure plate avoids one end of the hook tail frame 5 and contacts the buffer plate 4 to compress the buffer device 3.

[0051] Optionally, after being pre-compressed, the buffer device 3 and the buffer plate 4 have a length that is smaller than the inner cavity length of the coupler box.

[0052] Specifically, under the limiting action of the pre-compression push bolt 1, the length from the front end of the buffer plate 4 to the rear end of the buffer device 3 is less than the inner cavity length of the coupler box, so that the buffer device 3 and the buffer plate 4 can be smoothly installed in the coupler box.

[0053] In this embodiment, the sum of the lengths of the buffer device 3 after pre-compression and the buffer plate 4 is 615-620 cm, and the inner cavity length of the coupler box is 623-625 cm.

[0054] Optionally, installing the hook tail frame 5 with the pre-compressed buffer device 3 installed on the vehicle body includes:

[0055] Place the hook tail frame 5 with the pre-compressed buffer device 3 installed on the lifting trolley;

[0056] Move the lifting trolley to the bottom of the coupler box;

[0057] Lift the coupler frame 5 with the pre-compressed buffer device 3 installed and allow it to enter the coupler box;

[0058] Install the tail frame support plate.

[0059] Specifically, when installing the buffer device 3, place the hook tail frame 5 equipped with the pre-compressed buffer device 3 and the buffer plate 4 on the lifting trolley, push the lifting trolley to the bottom of the coupler box, and then lift the hook tail frame 5 equipped with the pre-compressed buffer device 3 and the buffer plate 4 by the lifting trolley and install it into the coupler box. Then install the tail frame support plate, and then use a wrench to remove the top bolt 1, and then remove the block 2.

[0060] In this embodiment, the tail frame support plate and the first fastening component 9 form a fastening and mounting structure of the hook tail frame 5 .

[0061] Optionally, installing the coupler 6 includes:

[0062] Lift and move the coupler 6;

[0063] Insert the hook tail of the coupler 6 into the opening at one end of the hook tail frame 5;

[0064] Install the coupler pin.

[0065] Specifically, when installing the coupler 6, lift the coupler 6, insert the hook tail into the opening at one end of the hook tail frame 5, place the hook tail in the connection position in front of the buffer device 3, insert the hook tail pin, and install the tail pin bolt assembly.

[0066] In this embodiment, the coupler tail pin and the tail pin bolt assembly 10 form a first mounting structure of the coupler 6 .

[0067] Optionally, after installing the coupler 6, the process further includes: installing a coupler joist.

[0068] Specifically, the coupler joist is installed last and fastened by the second fastener. The coupler joist and the second fastener 11 form the second installation structure of the coupler 6 .

[0069] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for installing a rail vehicle coupler buffer device, characterized in that: include: Obtaining abutting bolts and a stopper capable of being threadably connected to the abutting bolts; Installing the buffer device, the buffer plate and the stopper into the hook tail frame so that the stopper contacts one end of the hook tail frame; Pre-compressing the buffer device and supporting the buffer plate with the supporting bolt passing through the baffle to maintain the pre-compressed state of the buffer device; Install the hook tail frame with the pre-compressed buffer device onto the vehicle body; Remove the abutting bolt and the stopper; Install the coupler.

2. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: The length of the stop block is greater than the width of the one end of the hook tail frame, and a raised limiting portion is respectively provided at both ends of the stop block in the length direction. When the stop block is installed in the hook tail frame, the two limiting portions are clamped on the two outer sides of the one end of the hook tail frame in the width direction.

3. The method for installing a rail vehicle coupler buffer device according to claim 2, characterized in that: When the abutting bolt passes through the baffle and is threadedly connected to the baffle, a T-shaped structure is formed.

4. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: The buffer device is pre-compressed by a press, and the abutting bolt is tightened in the pre-compressed state of the buffer device.

5. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: The buffer device is pre-compressed and the length of the buffer plate is smaller than the length of the inner cavity of the coupler box.

6. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: Installing the coupler frame with the pre-compressed buffer device onto the vehicle body includes: Place the hook tail frame with the pre-compressed buffer device on the lifting trolley; Move the lifting trolley to the bottom of the coupler box; Lift the coupler frame with the pre-compressed buffer device installed and allow it to enter the coupler box; Install the tail frame support plate.

7. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: Installing the coupler includes: Lift and move the coupler; Inserting the hook tail of the coupler into the opening at one end of the hook tail frame; Install the coupler pin.

8. The method for installing a rail vehicle coupler buffer device according to claim 1, characterized in that: After installing the coupler, the following steps are also included: installing the coupler joist.

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