Axle box body of metro vehicle

Abstract

The utility model relates to an axle box body of a metro vehicle, which comprises a front side, a rear side and a middle hole, primary rubber spring seats are arranged on the left side and the right side of the axle box body, reinforcing ribs are respectively arranged between the upper sides of the left spring seat and the right spring seat and the middle hole, a reinforcing rib is arranged between the lower side of the middle hole and the primary spring seats on the two sides, and four through holes are respectively arranged on the front end face and the rear end face of the middle hole. Through holes are formed in the side faces of the two spring seats, and the first-series rubber spring is transversely and longitudinally positioned in the mode that steel wire thread inserts and bolts are installed in the through holes. And the axle box body is made of a carbon fiber material. According to the utility model, the carbon fiber material is adopted, so that the product strength, corrosion resistance, processability, high temperature resistance, environmental protection benefits and the like are improved, and the complex structure of the original product is simplified; a product structure is optimized, a through hole is longitudinally machined in a primary spring mounting seat of an axle box body, a primary rubber spring is prevented from moving transversely and longitudinally, unnecessary shaking of a wheel pair in the running process is reduced through accurate constraint, and the stability of a vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of axle box of subway vehicle, belong to rail transit field. BACKGROUND

[0002] Axle box is the key component of rail transit vehicle bogie, and is connected with wheel set group and frame through primary suspension device, which has important influence on the running stability and safety of vehicle.The axle box of previous urban rail vehicle adopts cast iron, cast steel and aluminum alloy material, and does not set the structure for preventing the movement of primary spring.

[0003] Although cast iron material has higher hardness and strength, its brittleness is relatively large.When impacted or bent, cast iron is prone to fracture or rupture.Meanwhile, the corrosion resistance of cast iron material is still insufficient in humid, acidic or alkaline and other harsh environments.

[0004] During solidification of cast steel material, due to the temperature gradient generated by the contact of liquid metal with mold wall, the internal organization of casting is not uniform, and the crystallization of liquid metal is carried out in dendritic growth mode, and the liquid metal between dendrites is difficult to completely fill when finally solidified, resulting in non-densification in the internal casting, which may form loose or even shrinkage hole, resulting in complex production process, low material utilization rate and high production cost.

[0005] Although aluminum alloy material has the characteristics of light weight and high strength, its strength is still insufficient compared with carbon fiber advanced material;The wear resistance of aluminum alloy is relatively poor, and it is relatively easy to deform when subjected to external force, and is prone to wear and scratch in complex vehicle operating environment.

[0006] The lateral or longitudinal movement of primary rubber spring increases the unnecessary shaking risk of wheel set during driving, which is not conducive to the stability and safety of vehicle. SUMMARY

[0007] The utility model provides a kind of axle box of subway vehicle, solve the problem that the lateral or longitudinal movement of current structure primary rubber spring increases the unnecessary shaking risk of wheel set during driving, which is not conducive to the stability and safety of vehicle, and simultaneously solve the problem of material defect.

[0008] The utility model is realized by the following technical solutions:

[0009] A subway vehicle axle box body includes a front side, a rear side, and a middle hole. A series of rubber spring seats are provided on the left and right sides. Reinforcing ribs are provided between the upper side of the left and right spring seats and the middle hole. A reinforcing rib is provided between the lower side of the middle hole and the two sides of the series of spring seats. The front and rear end faces of the middle hole are each provided with four through holes, which are connected and fastened to the front cover and the rear cover by bolts and nuts. The sides of the two spring seats are provided with through holes. The series of rubber springs are positioned laterally and longitudinally by installing steel wire thread sleeves and bolts in these through holes.

[0010] The axle box body is made of carbon fiber.

[0011] This utility model optimizes the material of the axle box body, which is made of carbon fiber, improving the product's strength, corrosion resistance, processability, high temperature resistance, and environmental friendliness, while simplifying the complex structure of the original product.

[0012] The product structure is optimized by machining through holes longitudinally in the primary spring mounting seat of the axle box to prevent the primary rubber spring from moving laterally and longitudinally. This precise constraint helps reduce unnecessary wheel sway during driving and improves vehicle stability. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the shaft housing;

[0014] Figure 2 This is a structural diagram of the axle box;

[0015] Figure 3 yes Figure 2 Top view;

[0016] Figure 4 yes Figure 2 Left view. Detailed Implementation

[0017] like Figures 1-4 As shown, this utility model is a carbon fiber axle box, including a front side, a rear side, and a central hole 3. A series of rubber spring seats 1 and 2 are provided on the left and right sides. A reinforcing rib 4 is provided between the upper left and right spring seats and the central hole 3, and a reinforcing rib 5 is provided between the lower axle box central hole 3 and the two side spring seats. The front and rear ends of the central hole 3 each have four through holes 7. This axle box is connected and fastened to the front and rear covers using bolts and nuts. The sides of the two spring seats have through holes 6, and the series of rubber springs are positioned laterally and longitudinally by installing wire threaded sleeves and bolts in these through holes.

[0018] The axle box body of this utility model is made of carbon fiber. Carbon fiber composite material is characterized by its low density (approximately 1.6 g / cm³). 3 It is far lower than the 7.8 g / cm³ of steel. 3 And aluminum 3g / cm 3) is characterized, so that the weight of carbon fiber shaft box is greatly reduced. This lightweight feature is of great significance to improve the overall performance of the vehicle and energy saving and emission reduction. Carbon fiber composite material has very high strength, its strength and carbon modulus can reach 4-5 times of steel. Carbon fiber composite material has excellent aging resistance and fatigue resistance, its fatigue limit can reach 70%-80% of the tensile strength, can more safely and stably serve in the whole life cycle. Carbon fiber composite material also has certain corrosion resistance, can resist the corrosion of corrosive substances such as concentrated hydrochloric acid, phosphoric acid and sulfuric acid, reduce the maintenance cost of products in various complex climates due to corrosion, further prolong the service life of the shaft box.

[0019] At the same time, the bolt connection restricts the transverse and longitudinal movement of the primary rubber spring pin shaft in the longitudinal direction of the primary rubber spring seat, can provide accurate constraint force, and ensures the accurate positioning of the primary spring in the transverse and longitudinal directions. This accurate constraint helps to reduce unnecessary shaking of the wheel set during driving, and improves the stability of the vehicle. The bolt connection has high strength and stiffness, can resist various loads during vehicle operation, maintain the stable position of the primary spring, and is not easy to loosen or fail.

Claims

1. A subway vehicle axle box characterized by: It includes front side, back side and middle hole, and is provided with a series of rubber spring seats on the left and right sides, and is provided with a reinforcing rib between the upper side of the left and right spring seats and the middle hole respectively, and is provided with a reinforcing rib between the lower side of the middle hole and the two side spring seats, and is provided with four through holes on the front and rear end faces of the middle hole respectively, and is connected and fastened with the front cover and the rear cover by bolts and nuts, and the side faces of the two spring seats are provided with through holes, and the horizontal and vertical positions of the series of rubber springs are positioned by installing steel wire sleeves and bolts in the through holes.

2. The axle box of claim 1, wherein: The shaft box body is made of carbon fiber material.

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