A metro bogie axle box correcting device

Abstract

The utility model relates to a subway bogie axle box correcting device, including pole body, fixed sleeve joint department and remove sleeve joint department, fixed sleeve joint department includes first connecting section and first sleeve, the upper end of first connecting section is fixed in the front end lower surface of pole body, and first sleeve is fixed in the lower extreme of first connecting section, and the axis of first sleeve keeps level, and is perpendicular to pole body, remove sleeve joint department includes square tube, second connecting section and second sleeve, square tube is slidably connected on pole body, and is located the rear of fixed sleeve joint department, the upper end of second connecting section is fixed in the lower surface of square tube, and the lower extreme of second connecting section fixes second sleeve, and second sleeve is parallel with first sleeve, and both ends of first sleeve and second sleeve all have recess. The utility model makes the adjustment of axle box more convenient when bogie wheel falls, and will not cause damage to axle box and axle end cap.

Description

Technical Field

[0001] This utility model relates to the field of subway bogie assembly technology, specifically to a subway bogie axle box straightening device. Background Technology

[0002] During the assembly of subway bogies, if the bogie has a swing arm structure, the axle box needs to be aligned when the wheels are lowered to ensure proper fit between the swing arm and the axle box. Therefore, an axle box alignment fixture needs to be designed to adjust the axle box when the bogie is lowered onto the wheelset, while avoiding any impact to the axle box and axle end cap.

[0003] Currently, when lowering the wheels of a bogie with a swing arm structure, an inspection is required after wheel lowering to ensure the swing arm is correctly placed on the axle box. If there is any deviation, it is corrected using jacks or pry bars. Correcting the axle box using jacks or pry bars is time-consuming, inconvenient, and inefficient. Furthermore, using jacks or pry bars to correct the axle box can easily damage the axle box and axle end caps.

[0004] It is desirable to provide a correction device for axle boxes of subway bogies that can solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a correction device for a subway bogie axle box, which makes it easier to adjust the axle box when the bogie wheels are lowered, and will not cause damage to the axle box and axle end cover.

[0006] To achieve the above-mentioned purpose of the utility model, a subway bogie axle box straightening device includes a rod body, a fixed sleeve part and a movable sleeve part; The fixed sleeve includes a first connecting section and a first sleeve; The upper end of the first connecting segment is fixed to the lower surface of the front end of the rod. The first sleeve is fixed to the lower end of the first connecting section, and the axis of the first sleeve remains horizontal and perpendicular to the rod body; The movable socket includes a square tube, a second connecting section, and a second sleeve; The square tube is slidably sleeved on the rod body and is located behind the fixed sleeve part; The upper end of the second connecting section is fixed to the lower surface of the square tube, and the lower end of the second connecting section is fixed to the second sleeve, which is parallel to the first sleeve. Both ends of the first sleeve and the second sleeve have grooves.

[0007] Preferably, locking bolts are provided on both sides of the square tube, which are used to fix the square tube after it has slid to a suitable position.

[0008] Preferably, both the first connecting segment and the second connecting segment are detachably connected to the rod body by bolts.

[0009] The subway bogie axle box straightening device of this utility model has the following advantages compared with the prior art: The entire tooling is easy to manufacture, low in cost, and durable. The sleeve structure with cylindrical ends makes the tooling easier to use and prevents damage to the axle box and shaft end assembly. The distance between the two sleeves can be adjusted or fixed, allowing the tooling to be better applied to different types of axle boxes and shaft end assemblies. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a subway bogie axle box straightening device according to this embodiment; Figure 2 This is a front view of a subway bogie axle box straightening device according to this embodiment. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0012] Example like Figure 1 and Figure 2 As shown, a subway bogie axle box straightening device includes a rod body 1, a fixed sleeve part, and a movable sleeve part.

[0013] The fixed sleeve part includes a first connecting section 2 and a first sleeve 3; the upper end of the first connecting section 2 is fixed to the lower surface of the front end of the rod body 1; the first sleeve 3 is fixed to the lower end of the first connecting section 2, and the axis of the first sleeve 3 is kept horizontal and perpendicular to the rod body 1.

[0014] The movable sleeve part includes a square tube 4, a second connecting section 5, and a second sleeve 6; the square tube 4 is slidably sleeved on the rod body 1 and is located behind the fixed sleeve part.

[0015] In this embodiment, locking bolts 7 are provided on both sides of the square tube 4. After the square tube 4 slides to a suitable position, it is fixed by the locking bolts 7.

[0016] The upper end of the second connecting section 5 is fixed to the lower surface of the square tube 4, and the lower end of the second connecting section 5 is fixed to the second sleeve 6. The second sleeve 6 is parallel to the first sleeve 3.

[0017] Both ends of the first sleeve 3 and the second sleeve 6 have grooves 8.

[0018] In this embodiment, both the first connecting segment 2 and the second connecting segment 5 are detachably connected to the rod body by bolts, which facilitates later maintenance and repair.

[0019] When using the tooling, the first sleeve 3 and the second sleeve 6 are fitted onto the bolts at the shaft end, ensuring a sufficiently stable force point during shaft box straightening and requiring less force. Furthermore, the first sleeve 3 and the second sleeve 6 are cylindrical at both ends, which avoids damaging the anti-loosening lines on the bolts during shaft box straightening and increases the flexibility of the tooling, allowing it to be rotated clockwise or counterclockwise according to actual needs.

[0020] In the tooling design, the first connecting section 2, the second connecting section 5, the square tube 4, and the rod 1 were reinforced based on the forces required during actual use to ensure the durability of the axle box straightening tooling, making it less prone to deformation and increasing its service life. The extended rod also makes it easier to straighten the axle box using this tooling. Simultaneously, the square tube can move freely on the rod, allowing the axle box straightening tooling to be flexibly applied to axle boxes with different axle end bolt spacings. Thus, even if a bogie has multiple axle ends, only one axle box straightening tooling needs to be manufactured, thereby reducing costs.

[0021] Finally, if it is necessary to use this axle box straightening fixture to adjust multiple axle boxes with the same bolt spacing, the square tube and the rod can be fastened together with bolts to avoid the need to readjust the distance between the two sleeves every time the axle box with the same bolt spacing is adjusted, thereby increasing work efficiency.

[0022] Implementation steps: (1) First, adjust the distance between the two sleeves (first sleeve 3 and second sleeve 6) on the tooling according to the actual shaft end bolt spacing; (2) Place the first sleeve 3 and the second sleeve 6 onto the bolts at the shaft end.

[0023] (3) Adjust the axle box according to the angle that the axle box needs to be adjusted when the bogie is lowered.

[0024] (4) After the axle box is straightened, the tooling can be removed.

[0025] In summary, this axle box straightening fixture is a tool that combines the advantages of convenience, durability, low cost, and the ability to effectively avoid damage to the axle box and shaft end cap. It is also suitable for a variety of axle box models.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A correction device for axle boxes of a subway bogie, characterized in that, It includes a rod body, a fixed sleeve, and a movable sleeve; The fixed sleeve includes a first connecting section and a first sleeve; The upper end of the first connecting segment is fixed to the lower surface of the front end of the rod. The first sleeve is fixed to the lower end of the first connecting section, and the axis of the first sleeve remains horizontal and perpendicular to the rod body; The movable socket includes a square tube, a second connecting section, and a second sleeve; The square tube is slidably sleeved on the rod body and is located behind the fixed sleeve part; The upper end of the second connecting section is fixed to the lower surface of the square tube, and the lower end of the second connecting section is fixed to the second sleeve, which is parallel to the first sleeve. Both ends of the first sleeve and the second sleeve have grooves.

2. The subway bogie axle box straightening device according to claim 1, characterized in that, Locking bolts are provided on both sides of the square tube, which are used to fix the square tube after it is slid to the appropriate position.

3. A subway bogie axle box straightening device according to claim 1 or 2, characterized in that, Both the first and second connecting sections are detachably connected to the rod body via bolts.

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