Damping device and bogie

Abstract

The invention provides a damping device and a bogie, relates to the field of railway wagon bogies, and aims to solve the problem that a weighing device is inconvenient to arrange when a bilateral Leynol damper is adopted at present. Damping seats are arranged at the two ends of a guide frame body respectively, the damping seat at one end is provided with a connecting arm and a mounting seat, and the mounting seat is rotationally connected with the connecting arm; according to the bogie, the mounting seat can be matched with the Leynolds damper, and the mounting space for arranging the weighing valve is formed at the top of the mounting seat, so that the problem that the weighing device is inconvenient to mount when the Leynolds dampers on the two sides are arranged is effectively solved, and the applicability and the flexibility of the bogie are improved.

Description

Technical Field

[0001] The invention relates to the field of railway freight car bogies, and in particular to a vibration reduction device and a bogie. Background Art

[0002] Railway freight car bogie shock absorbers include many forms, such as hydraulic shock absorbers that use the viscous resistance of liquid to do negative work to absorb vibration energy; air springs are filled with compressed air in a sealed container, and use the compressibility of gas to achieve its elastic effect; the anti-roll torsion bar device consists of a torsion bar, two torsion arms and two connecting rods. The torsion bar is installed on the two bolsters. When the car body rolls, one connecting rod moves upward and the other connecting rod moves downward. At this time, one end of the torsion arm moves upward and downward respectively, which acts on the torsion bar with a torque, causing the torsion bar to twist and deform. The reaction torque generated by the torsion bar resists the roll of the car body, thereby improving the roll performance of the car body. Single-sided Linol shock absorbers are more common in railway freight car bogies.

[0003] A Chinese patent (publication number: CN 109109896 A, publication date 2019.01.01) discloses a new type of bogie for subway engineering vehicles. The frame composition includes side beams and cross beams. The side beams are double web structures, which are connected to the cross beams by welding and plugging to form an H shape, and are low-center plate structures; the bottom of the side beams is welded to the guide frame, and the two ends are welded to the shock absorber seat; the cross beam is welded to the brake hanger seat 1 and the brake hanger seat 2; the suspension damping system includes Linol shock absorbers and vertical hydraulic shock absorbers, and the upper end of the suspension damping system is connected to the guide frame, and the lower end is connected to the axle box assembly. On harsh lines, in order to obtain better damping effect and improve the dynamic performance of the whole vehicle, the bogie needs to adopt double-sided Linol shock absorbers. One of the bogies of a railway freight car needs to be equipped with a weighing device to adjust the different braking forces of the whole vehicle under empty and loaded vehicle conditions. When using a single-sided Linore shock absorber, the weighing device is installed on the non-shock absorber side of the guide frame. When using a double-sided Linore shock absorber, the weighing device is inconvenient to arrange and it is difficult to meet the needs of adjusting different vehicle braking forces under empty and loaded vehicle conditions. Summary of the invention

[0004] The purpose of the present invention is to provide a vibration damping device and a bogie in view of the defects of the prior art. Vibration damping seats are respectively arranged at both ends of the guide frame body, and the vibration damping seat at one end is provided with a connecting arm and a mounting seat. The mounting seat and the connecting arm are rotatably connected so that the mounting seat can cooperate with the Linoel shock absorber, and an installation space for arranging a weighing valve is formed on the top of the mounting seat, which effectively solves the problem of inconvenient installation of the weighing device when the Linoel shock absorbers are arranged on both sides, and improves the applicability and flexibility of the bogie.

[0005] The first object of the present invention is to provide a vibration reduction device, which adopts the following scheme:

[0006] It includes a guide frame body and a Linoel shock absorber. The guide frame body is provided with an axle box mounting part. Vibration damping seats are respectively provided on both sides of the axle box mounting part, and the Linoel shock absorbers are respectively installed. A connecting arm is provided on one of the vibration damping seats of the guide frame body, and a mounting seat is rotatably connected to the connecting arm. The spring cap of one of the Linoel shock absorbers cooperates with the mounting seat through a lifting ring. A columnar mounting surface is provided on the guide frame body above the top surface of the mounting seat, and the top surface of the mounting seat and the mounting surface together form an installation space for accommodating the weighing valve.

[0007] Furthermore, a limiting groove is provided on the vibration-damping seat on one side of the spring cap to match and constrain the spring cap, and a connecting arm is provided on the other side of the spring cap.

[0008] Furthermore, the connecting arm and the mounting seat are rotatably connected via a fastening assembly.

[0009] Furthermore, the fastening assembly includes a pin shaft, a lock nut and a cotter pin, and connecting holes are respectively provided on the connecting arm and the mounting seat. One end of the pin shaft passes through the connecting holes on the connecting arm and the mounting seat and then cooperates with the lock nut, and the lock nut cooperates with the cotter pin to lock.

[0010] Furthermore, the connecting arm is provided with two spaced connecting holes, the mounting seat is provided with an ear plate extending from the mounting seat body, the connecting holes are arranged on the ear plate, and the connecting arm is located between the two spaced ear plates on the mounting seat.

[0011] Furthermore, an opening is provided between the connecting arm and the axle box mounting portion, and an inner wall of the opening forms a mounting surface.

[0012] Furthermore, a positioning protrusion is provided on the top surface of the mounting seat.

[0013] Furthermore, the spring cap and the mounting seat are respectively provided with pins, one end of the hanging ring is connected to the pin on the spring cap, and the other end is connected to the pin on the mounting seat.

[0014] A second object of the present invention is to provide a bogie with a vibration damping device, utilizing the vibration damping device as described in the first object.

[0015] Furthermore, it also includes a frame and a weighing valve, the vibration reduction device is installed on the frame, and the weighing valve cooperates with the frame and the vibration reduction device.

[0016] Compared with the prior art, the present invention has the following advantages and positive effects:

[0017] (1) In view of the problem that the weighing device is inconvenient to arrange when the double-sided Linore shock absorbers are currently used, shock absorber seats are respectively arranged at both ends of the guide frame body, and the shock absorber seat at one end is provided with a connecting arm and a mounting seat. The mounting seat and the connecting arm are rotatably connected so that the mounting seat can cooperate with the Linore shock absorber, and an installation space for arranging a weighing valve is formed on the top of the mounting seat, which effectively solves the problem of the inconvenience of installing the weighing device when the double-sided Linore shock absorbers are arranged, and improves the applicability and flexibility of the bogie.

[0018] (2) A pin is used between the mounting seat and the connecting arm to achieve rotational connection, and a clearance fit is used to achieve a small rotation, thereby improving assembly processability.

[0019] (3) The fastening assembly uses a locking nut in combination with a cotter pin, which has anti-loosening and anti-falling effects, thereby improving connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 Schematic diagram of the vibration reduction device of the bogie in Examples 1 and 2 of the present invention.

[0022] Figure 2 Schematic diagram of the guide frame body connected to the mounting seat in Examples 1 and 2 of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the guide frame body in Examples 1 and 2 of the present invention.

[0024] Figure 4 Schematic diagram of the mounting base in embodiments 1 and 2 of the present invention.

[0025] Figure 5 Schematic diagram of the fastening assembly in Examples 1 and 2 of the present invention.

[0026] Among them, 1. guide frame body; 2. mounting seat; 3. fastening assembly; 11. connecting arm; 12. mounting surface; 21. ear plate; 22. positioning navel; 31. cotter pin; 32. anti-loosening nut; 33. pin shaft. DETAILED DESCRIPTION

[0027] Example 1

[0028] In a typical embodiment of the present invention, Figure 1-Figure 5 As shown, a vibration reduction device is provided.

[0029] In a railway freight car, a bogie needs to be equipped with a weighing device to adjust the different braking forces of the whole vehicle under the empty and loaded vehicle state. When a single-sided Linol shock absorber is used, the weighing device can be installed on the non-shock absorber side of the guide frame. However, when a double-sided Linol shock absorber is used, the arrangement of the weighing device becomes difficult, and it is difficult to meet the requirements of adjusting the different braking forces of the whole vehicle under the empty and loaded vehicle state. Based on this, this embodiment provides a vibration reduction device to solve the problem that the weighing device is inconvenient to install when the double-sided Linol shock absorber is arranged, while meeting the vibration reduction and weighing functions of the bogie.

[0030] like Figure 1 As shown, the vibration damping device is applied to the bogie, and the vibration damping device mainly includes a guide frame body 1 and a Linoel shock absorber. The guide frame body 1 is provided with an axle box mounting portion for mounting the axle box assembly. Vibration damping seats are respectively provided on both sides of the axle box mounting portion for mounting the Linoel shock absorber. A Linoel shock absorber is installed on each vibration damping seat, and the Linoel shock absorber cooperates with the guide frame body 1 and is placed on the spring bearing plate of the axle box assembly.

[0031] The Linoer shock absorber includes a spring, a spring cap and a lifting ring. The top of the spring is connected to the spring cap, and the bottom of the spring abuts against the spring bearing plate on the axle box assembly. The lifting ring is an oblong structure with an oblong hole. A connecting arm 11 is provided on one of the vibration damping seats of the guide frame body 1, and a mounting seat 2 is rotatably connected to the connecting arm 11. The spring cap of one of the Linoer shock absorbers is connected to the mounting seat 2 through a lifting ring.

[0032] The guide frame body 1 above the top surface of the mounting seat 2 is provided with a columnar mounting surface 12, and the top surface of the mounting seat 2 and the mounting surface 12 together form an installation space for accommodating the weighing valve. Among them, the guide frame body 1 provides the installation position of the axle box assembly and the Linoel shock absorber, and can be connected to the frame of the bogie. The shock absorber seat on the guide frame body 1 is used as a structure for connecting the Linoel shock absorber. In order to achieve stable support and load transfer, there is one on each side of the axial mounting portion for installing the Linoel shock absorber.

[0033] The spring of the Linol shock absorber provides a vibration reduction effect, and the spring cap cooperates with the lifting ring to connect the shock absorber to the mounting seat 2. The lifting ring is used to connect the spring cap and the mounting seat 2. The mounting seat 2 is connected to the connecting arm 11 through a rotating connection, allowing a certain angle adjustment.

[0034] In the case of double-sided Linol shock absorbers, a structure for installing a weighing valve on the guide frame body 1 is provided, which solves the problem of inconvenient layout of the weighing device. The use of double-sided Linol shock absorbers improves the vibration reduction effect and dynamic performance of the bogie on harsh lines.

[0035] like Figure 2 and Figure 3As shown, a limit groove is provided on the vibration damping seat on one side of the spring cap to cooperate with and constrain the spring cap to ensure its stability and accuracy during operation. It is understandable that a limit protrusion matching the limit groove can be provided on one side of the spring cap, and the limit protrusion can move within a set range relative to the limit groove. In this embodiment, the limit protrusion can be set to move vertically in the limit groove and can limit its maximum vertical relative position. The shape and size of the limit groove match the spring cap, which can effectively prevent the spring cap from deflecting or shaking during operation.

[0036] like Figure 3 As shown, a connecting arm 11 is provided on the other side of the spring cap, and the connecting arm 11 serves as a bridge connecting the spring cap and the mounting seat 2 or other components, and plays a role in transmitting force and motion. The connecting arm 11 can adopt a single-arm structure or a multi-arm structure, and a matching structure for the mounting seat 2 to match is pre-set on the connecting arm 11, such as an opening, a protrusion, etc.

[0037] The connecting arm 11 and the mounting seat 2 are rotatably connected via a fastening assembly 3. The fastening assembly 3 includes a pin shaft 33, a locking nut 32, and a cotter pin 31. The pin shaft 33 passes through the connecting holes on the connecting arm 11 and the mounting seat 2, and is then fastened by the locking nut 32, and finally locked by the cotter pin 31 to prevent the nut from loosening.

[0038] It is understandable that the rotational fit position between the connecting arm 11 and the mounting seat 2 can adopt a clearance fit, which can achieve a small rotation and improve the assembly processability.

[0039] In this embodiment, connecting holes are respectively provided on the connecting arm 11 and the mounting seat 2 for mounting the pin 33. This allows the connecting arm 11 to rotate within a certain range relative to the mounting seat 2, thereby adapting to different working requirements.

[0040] Specifically, Figure 3 and Figure 5 As shown, the connecting arm 11 adopts a double-arm structure, that is, two spaced connecting arms 11 are extended from one end of the guide frame body 1, and each connecting arm 11 is provided with a connecting hole. The two spaced connecting holes formed on the guide frame body 1 can cooperate with the mounting seat 2 to improve its connection stability, and the appropriate connecting hole can be selected for installation according to actual needs.

[0041] like Figure 4 and Figure 5 As shown, the mounting base 2 is provided with an ear plate 21 extending from the main body of the mounting base 2, and the connecting holes are arranged on the ear plate 21. In this embodiment, the mounting base 2 is provided with two ear plates 21 spaced apart, each ear plate 21 is provided with a connecting hole, and the connecting arm 11 is located between the two ear plates 21 spaced apart on the mounting base 2, which not only ensures the stability of the connection, but also facilitates installation and disassembly.

[0042] like Figure 2 As shown, an opening is provided between the connecting arm 11 and the axle box mounting portion, and the inner wall of the opening forms a mounting surface 12 for mounting and fixing a weighing device, such as a weighing valve.

[0043] The mounting seat 2 is integrally cast, and a positioning protrusion is provided on the top surface of the mounting seat 2, which is a positioning navel 22, and is used to provide an accurate positioning reference during the installation of the weighing valve to ensure the accurate installation position of the weighing valve.

[0044] In order to realize the connection between the spring cap and the mounting seat 2, as shown in FIG. Figure 1 As shown, pins are respectively provided on the spring cap and the mounting seat 2, one end of the hanging ring is connected to the pin on the spring cap, and the other end is connected to the pin on the mounting seat 2.

[0045] Specifically, mounting holes are respectively provided on the inner and outer sides of the spring cap and the mounting seat 2 , and the mounting holes are matched with pins. The installation of the lifting ring is achieved by matching the lifting ring with the pin, which facilitates the force transmission between the spring cap and the mounting seat 2 .

[0046] By setting the limit groove and the connecting arm 11, the movement range of the spring cap is effectively restricted, and the stability and accuracy of the structure are improved. The relative rotation between the connecting arm 11 and the mounting seat 2 is achieved through the rotation connection design of the fastening assembly 3, thereby adapting to different work requirements.

[0047] In this embodiment, the guide frame body 1 and the mounting seat 2 are integrally cast, with reliable structure and high strength. The upper end of the guide frame body 1 is welded to the bogie frame; the lower end is connected to the spring cap of the Linoir shock absorber through a lifting ring.

[0048] Example 2

[0049] In another typical embodiment of the present invention, Figure 1-Figure 5 As shown, a bogie with a vibration reduction device is provided, using the vibration reduction device as in Example 1.

[0050] The bogie with a vibration reduction device also includes a frame and a weighing valve. The vibration reduction device is installed on the frame, and the weighing valve cooperates with the frame and the vibration reduction device.

[0051] The weighing valve of the railway freight car bogie is a part of the empty and loaded vehicle adjustment device of the railway freight car. Its main function is to adjust the pressure of the brake cylinder according to the weight of the vehicle. When working, the weighing valve directly weighs the weight of the freight car and outputs different pressure signals. The pressure signals enter the adjustment valve in the empty and loaded vehicle adjustment device. The adjustment valve outputs different brake cylinder pressures according to different pressure signals. The heavier the freight car, the greater the pressure signal output by the weighing valve, and the greater the brake cylinder pressure output by the adjustment valve, so as to achieve the purpose of increasing the brake cylinder pressure as the weight of the vehicle increases.

[0052] The weighing valve usually includes a valve body, a valve core, a piston, a weighing spring, and a transmission pin connected between the piston and the weighing spring. The transmission pin is used to transmit the force of the weighing spring to the piston, and also includes a diaphragm that seals the inner cavity of the valve core. The diaphragm is supported by a diaphragm seat; the outer edge of the weighing spring is fixed to the diaphragm seat. When the vehicle load increases, the signal pressure output by the weighing valve increases, pushing the fulcrum roller upward. When the lever ratio is 1, when braking, the pressure output by the auxiliary air cylinder to the brake cylinder will be close to the pressure in the volume chamber from the control valve, and it is a heavy vehicle position. When the vehicle load gradually decreases, the signal pressure output by the weighing valve gradually decreases, the fulcrum roller moves downward, the lever ratio gradually decreases, and the brake cylinder pressure will also gradually decrease. Therefore, the brake cylinder pressure can change steplessly and continuously in direct proportion to the change of vehicle load, thereby obtaining a uniform and consistent braking deceleration.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration reduction device, characterized in that: It includes a guide frame body and a Linoel shock absorber. The guide frame body is provided with an axle box mounting part. Vibration damping seats are respectively provided on both sides of the axle box mounting part, and the Linoel shock absorbers are respectively installed. A connecting arm is provided on one of the vibration damping seats of the guide frame body, and a mounting seat is rotatably connected to the connecting arm. The spring cap of one of the Linoel shock absorbers cooperates with the mounting seat through a lifting ring. A columnar mounting surface is provided on the guide frame body above the top surface of the mounting seat, and the top surface of the mounting seat and the mounting surface together form an installation space for accommodating the weighing valve.

2. The vibration reduction device according to claim 1, characterized in that: A limiting groove is arranged on the vibration-damping seat on one side of the spring cap to match and constrain the spring cap, and a connecting arm is arranged on the other side of the spring cap.

3. The vibration reduction device according to claim 1 or 2, characterized in that: The connecting arm and the mounting seat are rotatably connected via a fastening assembly.

4. The vibration reduction device according to claim 3, characterized in that: The fastening assembly includes a pin shaft, a lock nut and a cotter pin. The connecting arm and the mounting seat are respectively provided with connecting holes. One end of the pin shaft passes through the connecting holes on the connecting arm and the mounting seat and then cooperates with the lock nut. The lock nut cooperates with the cotter pin to lock.

5. The vibration reduction device according to claim 4, characterized in that: The connecting arm is provided with two connecting holes spaced apart from each other, the mounting seat is provided with an ear plate extending out of the mounting seat body, the connecting holes are arranged on the ear plate, and the connecting arm is located between the two ear plates spaced apart from each other on the mounting seat.

6. The vibration reduction device according to claim 1, characterized in that: An opening is provided between the connecting arm and the axle box mounting portion, and an inner wall of the opening forms a mounting surface.

7. The vibration reduction device according to claim 1 or 6, characterized in that: A positioning protrusion is provided on the top surface of the mounting seat.

8. The vibration reduction device according to claim 1, characterized in that: The spring cap and the mounting seat are respectively provided with pins, one end of the hanging ring is connected to the pin on the spring cap, and the other end is connected to the pin on the mounting seat.

9. A bogie with a vibration reduction device, characterized in that: Utilize the vibration reduction device as claimed in any one of claims 1 to 8.

10. The bogie with a vibration damping device according to claim 9, characterized in that: It also includes a frame and a weighing valve. The vibration reduction device is installed on the frame, and the weighing valve cooperates with the frame and the vibration reduction device.

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