Railway crane bogie and railway crane

Abstract

The utility model provides a bogie of a railway crane and the railway crane. The bogie of the railway crane comprises a framework, the wheel pair is rotatably arranged below the framework, and an axle box is arranged on the wheel pair; and the vibration reduction assembly comprises vertical vibration reduction parts and transverse vibration reduction parts which can generate elastic deformation, the transverse vibration reduction parts and the vertical vibration reduction parts are arranged on the two sides of the wheel pair, the two ends of the vertical vibration reduction parts abut against the axle box and the framework correspondingly, and the two ends of the transverse vibration reduction parts abut against the axle box and the framework correspondingly. Through the technical scheme provided by the invention, the problem that the meshing state of the gear on the wheel pair and the gear of the walking speed reducer is poor in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and in particular to a bogie for a railway crane and a railway crane. Background Art

[0002] A railway crane is a boom-type crane installed on a special chassis and capable of running along railway tracks for loading and unloading operations, equipment installation, and accident rescue such as the overturning of railway locomotives and vehicles.

[0003] In the related art, a railway crane bogie includes a frame, a wheel set, axle boxes arranged on the wheel set, a braking device, a damping device, etc. The performance of the bogie is directly related to the safety and stability of the railway crane. The existing damping device consumes the vibration energy generated during the running of the crane by arranging a wedge on one side and a lateral spring on the other side above the axle box and on both sides of the wheel set, so as to play a role in suppressing the lateral vibration of the crane. At the same time, vertical springs are arranged on both sides of the wheel set to play a role in suppressing the vertical vibration of the crane.

[0004] When the crane lifts a heavy object, the axle load of the bogie changes, the compression amount of the vertical spring under the wedge changes accordingly, and the horizontal force exerted by the wedge on the axle box changes, resulting in the lateral movement of the wheel set relative to the frame. And the wheel set of the railway crane bogie is provided with gears, and the traveling speed reducer is fixed on the frame by bolts. When the relative movement amount of the wheel set relative to the frame is too large, the meshing state between the gears on the wheel set and the gears of the traveling speed reducer becomes poor. Summary of the Utility Model

[0005] The utility model provides a bogie for a railway crane and a railway crane to solve the problem of poor meshing state between the gears on the wheel set and the gears of the traveling speed reducer in the related art.

[0006] According to one aspect of the utility model, a bogie for a railway crane is provided. The bogie for a railway crane includes: a frame; a wheel set rotatably arranged below the frame, and axle boxes are arranged on the wheel set; a damping assembly including a vertical damping member and a lateral damping member capable of elastic deformation. Lateral damping members and vertical damping members are arranged on both sides of the wheel set. Two ends of the vertical damping member are respectively abutted against the axle box and the frame, and two ends of the lateral damping member are respectively abutted against the axle box and the frame.

[0007] Further, the lateral damping member includes a spring or a non-metallic elastic body.

[0008] Further, a top seat movable transversely is arranged on the lower surface of the frame. The top seat is attached to the side of the axle box, and two ends of the lateral damping member are respectively abutted against the frame and the top seat.

[0009] Further, a guide frame is provided on the lower surface of the frame, the top seat is movably arranged on the guide frame, and two ends of the lateral shock absorber are respectively abutted against the guide frame and the top seat.

[0010] Further, the top seat includes a seat body and a guide seat arranged on the seat body. The seat body is attached to the side of the axle box. The guide seat extends horizontally and has a first receiving hole, and the lateral shock absorber is inserted through the first receiving hole.

[0011] Further, a second receiving hole extending horizontally is provided on the guide frame, and the lateral shock absorber is inserted through the second receiving hole.

[0012] Further, the vertical shock absorber is located below the lateral shock absorber, and two ends of the vertical shock absorber are respectively abutted against the lower surface of the guide frame and the axle box.

[0013] Further, the axle box includes a connecting portion and a bearing portion. The connecting portion is sleeved on the wheel set. Two ends of the lateral shock absorber are respectively abutted against the frame and the side of the connecting portion. The bearing portion is connected to the lower end of the connecting portion. Two ends of the vertical shock absorber are respectively abutted against the frame and the upper surface of the bearing portion.

[0014] Further, the vertical shock absorber includes an outer circular spring and an inner circular spring located inside the outer circular spring. Two ends of the outer circular spring and two ends of the inner circular spring are respectively abutted against the axle box and the frame.

[0015] According to another aspect of the present invention, a railway crane is provided. The railway crane includes the railway crane bogie provided above.

[0016] Applying the technical solution of the present invention, the railway crane bogie includes a frame, a wheel set and a shock absorption assembly. When the frame moves up and down relative to the axle box as the crane load changes, the vertical shock absorber can be used to consume the vertical vibration energy generated when the crane is traveling. At this time, since the vertical shock absorbers on both sides of the wheel set and the axle box are under equal pressure from the frame and do not change with the axle load, the lateral shock absorbers on both sides of the wheel set have no horizontal force, the wheel set has no displacement in the horizontal direction relative to the frame, and the meshing state of the gears of the wheel set and the traveling speed reducer on the frame is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specification drawings forming a part of this application are used to provide a further understanding 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 an improper limitation to the present invention. In the drawings:

[0018] Figure 1 A partial cross-sectional view of the railway crane bogie provided according to an embodiment of the present invention is shown;

[0019] Figure 2Shows another partial cross-sectional view of the bogie of a railway crane provided according to an embodiment of the present utility model;

[0020] Figure 3 Shows a partial exploded view of the bogie of a railway crane provided according to an embodiment of the present utility model.

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 10. Frame; 11. Top seat; 111. Seat body; 112. Guide seat; 12. Guide frame;

[0023] 20. Wheel set; 21. Axle box; 211. Connecting part; 212. Bearing part;

[0024] 30. Vibration damping assembly; 31. Vertical vibration damping member; 311. Outer circular spring; 312. Inner circular spring; 32. Horizontal vibration damping member. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] As Figures 1 to 3 Shown, an embodiment of the present utility model provides a bogie of a railway crane. The bogie of the railway crane includes: a frame 10, a wheel set 20, and a vibration damping assembly 30. The wheel set 20 is rotatably arranged below the frame 10, and an axle box 21 is arranged on the wheel set 20; the vibration damping assembly 30 includes a vertical vibration damping member 31 and a horizontal vibration damping member 32 that can undergo elastic deformation. The horizontal vibration damping member 32 and the vertical vibration damping member 31 are arranged on both sides of the wheel set 20. The two ends of the vertical vibration damping member 31 are respectively abutted against the axle box 21 and the frame 10, and the two ends of the horizontal vibration damping member 32 are respectively abutted against the axle box 21 and the frame 10.

[0027] Applying the technical solution of the present utility model, the bogie of the railway crane includes a frame 10, a wheel set 20 and a vibration damping assembly 30. When the frame 10 moves up and down relative to the axle box 21 as the crane's lifting weight changes, the vertical vibration damping member 31 can consume the vertical vibration energy generated during the crane's travel. At this time, since the vertical vibration damping members 31 and the axle box 21 on both sides of the wheel set 20 are under equal pressure from the frame 10 and do not change with the axle load, the lateral vibration damping members 32 on both sides of the wheel set 20 have no horizontal force, the wheel set 20 has no displacement in the horizontal direction relative to the frame 10, and the meshing state between the gear on the wheel set 20 and the gear of the traveling speed reducer on the frame 10 is good.

[0028] Moreover, since lateral vibration damping members are provided on both sides of the wheel set, even when the crane is subjected to a lateral force due to its own lifting reason, the two lateral vibration damping members 32 respectively bear tensile stress and compressive stress. Compared with a single lateral spring, the lateral displacement generated between the frame 10 and the axle box 21 will also be reduced, making the change in the meshing state between the gear on the wheel set 20 and the gear of the traveling speed reducer on the frame 10 smaller.

[0029] Among them, lateral vibration damping members 32 and vertical vibration damping members 31 are provided on both sides of the wheel set 20, which means the front side and the rear side of the wheel set 20 in the traveling direction of the crane.

[0030] In this embodiment, on both sides of the wheel set 20, the frame 10 and the vibration damping assembly 30 are of a symmetric structure.

[0031] Among them, the lateral vibration damping member 32 includes a spring or a non-metallic elastic body. Using the above components has the advantages of convenient material selection and low cost.

[0032] Among them, the lateral vibration damping members 32 on both sides of the wheel set 20 can both be set as springs or both be set as non-metallic elastic bodies. Of course, springs and non-metallic elastic bodies can also be respectively set on both sides.

[0033] As Figure 1 and Figure 3 shown, a top seat 11 that can move horizontally is provided on the lower surface of the frame 10. The top seat 11 is in contact with the side part of the axle box 21, and both ends of the lateral vibration damping member 32 are respectively abutted against the frame 10 and the top seat 11. The top seat 11 can guide and support the lateral vibration damping member 32 to prevent the lateral vibration damping member 32 from moving.

[0034] As Figure 2 and Figure 3 shown, a guide frame 12 is provided on the lower surface of the frame 10. The top seat 11 is movably arranged on the guide frame 12, and both ends of the lateral vibration damping member 32 are respectively abutted against the guide frame 12 and the top seat 11. The guide frame 12 can guide and support the lateral vibration damping member 32 to prevent the lateral vibration damping member 32 from moving.

[0035] In this embodiment, by providing the guide frame 12, the volume of the frame 10 can be reduced, the weight of the bogie can be decreased, and the flexibility of the bogie can be improved.

[0036] Wherein, in the traveling direction of the crane, the guide frame 12 extends from the front side of the wheel set 20 to the rear side of the wheel set 20, and the upper surface of the guide frame 12 is welded to the frame 10.

[0037] As Figure 3 shown, the top seat 11 includes a seat body 111 and a guide seat 112 provided on the seat body 111. The seat body 111 is in contact with the side portion of the axle box 21, and the guide seat 112 extends transversely and has a first receiving hole. The lateral vibration damper 32 is passed through the first receiving hole. With the top seat 11 having the above structure, the seat body 111 and the guide seat 112 are in contact with the axle box 21 to increase the contact area between the top seat 11 and the axle box 21, and the guide seat 112 supports and guides the lateral vibration damper 32, which has the advantages of simple structure and convenient processing.

[0038] In this embodiment, the seat body 111 is a plate-like structure extending vertically. The guide seat 112 is a cylindrical structure extending transversely.

[0039] As Figure 3 shown, the guide frame 12 is provided with a second receiving hole extending transversely, and the lateral vibration damper 32 is passed through the second receiving hole. By using the second receiving hole, the lateral vibration damper 32 can be supported and guided to prevent the lateral vibration damper 32 from moving.

[0040] As Figure 1 shown, the vertical vibration damper 31 is located below the lateral vibration damper 32, and both ends of the vertical vibration damper 31 are respectively abutted against the lower surface of the guide frame 12 and the axle box 21. With the above arrangement, the space on both sides of the wheel set 20 can be fully utilized and cooperate with the axle box 21 to achieve the vertical vibration damping effect.

[0041] As Figure 1 shown, the axle box 21 includes a connecting portion 211 and a bearing portion 212. The connecting portion 211 is sleeved on the wheel set 20, and both ends of the lateral vibration damper 32 are respectively abutted against the frame 10 and the side portion of the connecting portion 211. The bearing portion 212 is connected to the lower end of the connecting portion 211, and both ends of the vertical vibration damper 31 are respectively abutted against the frame 10 and the upper surface of the bearing portion 212. With the above axle box 21, the connecting portion 211 can be used to connect with the wheel set 20 to support the axle box 21, and the bearing portion 212 can be used to bear the vertical vibration damper 31, which has the advantages of simple structure and convenient setting.

[0042] As Figure 1As shown in the figure, the vertical shock absorber 31 includes an outer circular spring 311 and an inner circular spring 312 located inside the outer circular spring 311. Both ends of the outer circular spring 311 and both ends of the inner circular spring 312 are respectively abutted against the axle box 21 and the frame 10. By adopting the above-mentioned vertical shock absorber 31, it has the advantages of simple structure and convenient material selection.

[0043] Another embodiment of the present invention provides a railway crane, which includes the railway crane bogie provided above. When the frame 10 moves up and down relative to the axle box 21 as the load of the crane changes, the vertical shock absorber 31 can be used to consume the vertical vibration energy generated when the crane is traveling. At this time, since the pressures on the vertical shock absorbers 31 and the axle box 21 on both sides of the wheel set 20 are equal and do not change with the axle load, the lateral shock absorbers 32 on both sides of the wheel set 20 have no horizontal force, the wheel set 20 has no displacement in the horizontal direction relative to the frame 10, and the meshing state between the gear on the wheel set 20 and the gear of the traveling speed reducer on the frame 10 is good.

[0044] Applying the railway crane bogie provided by the present invention has the following beneficial effects:

[0045] (1) By newly designing the shock absorption structure of the railway crane bogie, the meshing state of the gear of the traveling speed reducer is improved, and the transmission efficiency of the whole machine is improved.

[0046] (2) By optimizing the guide frame structure, increasing the length of the direct top spring, reducing the pressure deviation of the top seat on both sides of the axle box, and improving the position accuracy of the wheel set relative to the frame.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0050] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0051] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bogie for a railway crane, characterized in that, The railway crane bogie includes: A frame (10); A wheel set (20) rotatably disposed below the frame (10), and a journal box (21) is provided on the wheel set (20); A vibration damping assembly (30), including a vertical vibration damping member (31) and a lateral vibration damping member (32) capable of elastic deformation. The lateral vibration damping member (32) and the vertical vibration damping member (31) are provided on both sides of the wheel set (20). Two ends of the vertical vibration damping member (31) are respectively abutted against the journal box (21) and the frame (10), and two ends of the lateral vibration damping member (32) are respectively abutted against the journal box (21) and the frame (10).

2. The bogie of the railway crane according to claim 1, characterized in that, The lateral vibration damping member (32) includes a spring or a non-metallic elastomer.

3. The bogie of the railway crane according to claim 1, characterized in that, A top seat (11) movable in the lateral direction is provided on the lower surface of the frame (10). The top seat (11) is attached to the side of the journal box (21), and two ends of the lateral vibration damping member (32) are respectively abutted against the frame (10) and the top seat (11).

4. The bogie of a railway crane according to claim 3, characterized in that, A guide frame (12) is provided on the lower surface of the frame (10). The top seat (11) is movably disposed on the guide frame (12), and two ends of the lateral vibration damping member (32) are respectively abutted against the guide frame (12) and the top seat (11).

5. The bogie of a rail crane according to claim 3, characterized in that, The top seat (11) includes a seat body (111) and a guide seat (112) provided on the seat body (111). The seat body (111) is attached to the side of the journal box (21). The guide seat (112) extends in the lateral direction and has a first receiving hole. The lateral vibration damping member (32) passes through the first receiving hole.

6. The bogie of a railway crane according to claim 4, characterized in that, A second receiving hole extending in the lateral direction is provided on the guide frame (12). The lateral vibration damping member (32) passes through the second receiving hole.

7. The bogie of a railway crane according to claim 4, characterized in that, The vertical vibration damping member (31) is located below the lateral vibration damping member (32). Two ends of the vertical vibration damping member (31) are respectively abutted against the lower surface of the guide frame (12) and the journal box (21).

8. The bogie of a rail crane according to claim 1, characterized in that, The journal box (21) includes a connecting portion (211) and a bearing portion (212). The connecting portion (211) is sleeved on the wheel set (20). Two ends of the lateral vibration damping member (32) are respectively abutted against the frame (10) and the side of the connecting portion (211). The bearing portion (212) is connected to the lower end of the connecting portion (211). Two ends of the vertical vibration damping member (31) are respectively abutted against the frame (10) and the upper surface of the bearing portion (212).

9. The bogie of a railway crane according to claim 1, characterized in that, The vertical vibration damping member (31) includes an outer circular spring (311) and an inner circular spring (312) located inside the outer circular spring (311). Two ends of the outer circular spring (311) and two ends of the inner circular spring (312) are respectively abutted against the journal box (21) and the frame (10).

10. A railway crane, characterized in that, The railway crane includes the railway crane bogie according to any one of claims 1 to 9.

Images