High-strength cast steel axle box of high-speed train

Abstract

The utility model provides a high-strength cast steel axle box of a high-speed train. The high-strength cast steel axle box comprises an axle box body and spring seats fixed to the two sides of the axle box body. The axle box body comprises a box body, an outer ring and a locking piece. The locking piece comprises a guide pipe, a locking bundle and a convex block; the protruding block is fixed to the outer side face of the locking bundle. Holes and grooves are correspondingly formed in the box body, the outer ring is arranged on the outer side of the box body in a sleeving mode and is in sliding fit with the outer surface of the box body, an abutting block is arranged on the inner side of the outer ring, the spring seats are fixedly connected to the left side and the right side of the box body through connecting ribs, and spring mounting columns are arranged on the upper surfaces of the spring seats. The bearing is installed through locking, it is guaranteed that the bearing is easy and convenient to install and detach, and time and labor waste is reduced. Bolts are not adopted for fixing and installing the bearings inside, and maintenance is facilitated. Mechanical strength is high, damage is not prone to occurring, and bearing capacity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle accessories, in particular to a high-strength cast steel axle box for high-speed trains. Background Art

[0002] On a rail vehicle, the component that is mounted on the axle neck and connects the wheelset and the bogie frame or the body of a two-axle vehicle is called the axle box. The function of the axle box is to transfer the weight and load of the vehicle body to the wheelset, lubricate the axle neck, reduce friction, and lower running resistance.

[0003] The existing axle box is provided with bearing holes, and although bearings can be installed by bolts, the bearings can be detachably installed. However, the method of installing bearings with bolts is not convenient for workers to quickly repair damaged bearings during the disassembly process. During the disassembly and installation process, multiple bolts need to be removed with the help of tools, which wastes a lot of time and manpower. In addition, the bolt connection is prone to loosening or damage under long-term driving vibration. The fixing bolts are inside the axle box, and problems cannot be discovered in time, which is not conducive to maintenance. Summary of the Invention

[0004] In view of the above problems, the utility model provides a high-strength cast steel axle box for high-speed trains.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-strength cast steel axlebox for a high-speed train, comprising an axlebox body and spring seats fixed on both sides of the axlebox body;

[0007] The axle box main body comprises a box body, an outer ring and a locking piece; the box body is a cylinder, and the end surfaces of the front and rear ends of the box body are provided with fixing holes; the locking piece comprises a guide tube, a locking bundle and a protrusion; the outer side of the guide tube is connected to the inner side wall of the box body through a connecting block, the guide tube is concentrically arranged in the box body, one end of the locking bundle is fixed on the end surface of the guide tube located inside the box body, and the other end of the locking bundle extends toward the rear end of the box body, and the protrusion is fixed to the outer side surface of the locking bundle; the box body is provided with a hole groove corresponding to the protrusion area, the outer ring is sleeved on the outer side of the box body, the outer ring is slidably matched with the outer surface of the box body, and the inner side of the outer ring is provided with an interference block, and the interference block is arranged in the hole groove. Under normal conditions, the projection and the interference block are staggered;

[0008] The spring seat is connected and fixed to the left and right sides of the box body through connecting ribs, and a spring mounting column is provided on the upper surface of the spring seat.

[0009] Furthermore, the spring seat is symmetrically arranged, and the spring seat on one side is fixed with two connecting ribs, which are respectively fixed to the side surfaces at the front and rear ends of the box body. The connecting ribs are arranged along the tangent direction of the outer circumference of the box body, and the outer ring is arranged between the two connecting ribs.

[0010] Furthermore, there are at least two locking bundles, and the locking bundles are equidistantly arranged along the circumference of the guide tube.

[0011] Furthermore, the number of the hole grooves is the same as the number of the locking bundles, the hole grooves are strip grooves arranged around the circumference of the box body, the protrusions and the interference blocks are located at both ends of the hole grooves, the protrusions are provided with inclined surfaces toward the side of the interference block, and the cross-section of the interference block is semicircular.

[0012] Furthermore, a reinforcing rib is provided, the lower side of which is fixedly connected to the connecting rib and the upper surface of the spring seat, and one end of the reinforcing rib close to the box body is respectively connected to the side surfaces of the front and rear ends of the box body.

[0013] Furthermore, a circular groove is provided on the upper surface of the spring seat, and the spring mounting column is concentrically fixed in the circular groove.

[0014] Furthermore, a handle is provided on the outer ring, and the handle is fixed on the outer side surface of the outer ring.

[0015] Furthermore, the box body is provided with a first screw hole, the outer ring is provided with a corresponding second screw hole, the first screw hole is aligned with the second screw hole, and the abutment block abuts against the protrusion to lock the bearing.

[0016] Furthermore, the outer ring is made by integral casting, and the box body, locking piece, connecting rib and spring seat are integrally connected.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention is provided with an outer ring and a locking member, the locking member including a locking bundle, a protrusion provided on the locking bundle, and a corresponding abutment block provided inside the outer ring. When in use, the bearing is placed inside the locking bundle, and the outer ring is rotated so that the abutment block of the outer ring abuts against the protrusion, so that the locking bundle is locked inward, the bearing is fixed, and the bearing is fixed. When disassembling, it is only necessary to open the axle box cover on the rear side, rotate the outer ring, stagger the abutment block and the protrusion, and loosen the locking bundle to disassemble the bearing. The disassembly is simple and convenient, reducing the waste of time and manpower. (2) The present invention does not use bolts to fix the bearing internally, avoiding the problem of not being able to find the loose bolts in time due to the difficulty in observing the internal bolts, which is conducive to maintenance. (3) The present invention is made by lost foam integrated casting, which is simple and convenient to manufacture, has high mechanical strength, is not easy to damage, and has a strong bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the high-strength cast steel axle box for high-speed trains of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the high-strength cast steel axle box without an outer ring for high-speed trains of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the outer ring of the high-strength cast steel axle box for high-speed trains of the present invention;

[0021] Figure 4 This is a structural schematic diagram of a high-speed train high-strength cast steel axle box with the box body partially cut away. DETAILED DESCRIPTION

[0022] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A high-strength cast steel axle box for a high-speed train according to an embodiment of the present invention includes an axle box body 100 and spring seats 200 fixed on both sides of the axle box body; the axle box body 100 is used to fix the bearing, and the spring seats 200 are used to fix and connect the spring buffer parts to reduce vibration during driving.

[0024] The axle box body 100 includes a box body 110, an outer ring 120 and a locking member 130; the box body 110 is a cylinder, and the front and rear end faces of the box body 110 are provided with fixing holes 111; the axle box covers on the front and rear end faces of the axle box can be fixed through the fixing holes 111 to protect the internal bearings and other components from contamination and maintain the sealing of the lubricating oil. The locking member 130 includes a guide tube 131, a locking bundle 132 and a protrusion 133; the outer side of the guide tube 131 is connected to the inner wall of the box body 110 through a connecting block 140, and the guide tube 131 is concentrically arranged in the box body 110, one end of the locking bundle 132 is fixed to the end face of the guide tube 131 located inside the box body, and the other end of the locking bundle 132 extends to the rear end of the box body 110, and the protrusion 133 is fixed to the outer side face of the locking bundle 132; the box body 110 is provided with a hole groove 131 corresponding to the protrusion area. 12. The outer ring 120 is sleeved on the outside of the housing 110. The outer ring 120 and the outer surface of the housing 110 are slidably engaged. The inner side of the outer ring 120 is provided with a contact block 121. The contact block 121 is set in the hole groove 112. Under normal conditions, the protrusion 133 and the contact block 121 are staggered. When in use, the bearing is placed inside the locking bundle 132, and the outer ring 120 is rotated so that the outer ring's contact block 121 contacts the protrusion 133, causing the locking bundle 132 to lock inward, fixing the bearing and achieving bearing fixation. During disassembly, it is only necessary to open the rear axle box cover, rotate the outer ring 120, stagger the contact block 121 and the protrusion 133, loosen the locking bundle 132, and disassemble the bearing. Disassembly is simple and convenient, reducing waste of time and manpower. In addition, no internal bolts are used for connection, avoiding the situation where internal bolts are difficult to maintain.

[0025] The spring seat 200 is connected and fixed to the left and right sides of the box body 110 via connecting ribs 300, ensuring that spring buffers are installed on both sides of the axle box. This effectively protects the bearings, axle box, and other components from excessive vibration and impact during high-load, high-speed train operation, thereby improving the comfort, durability, and safety of high-speed trains. The upper surface of the spring seat 200 is provided with spring mounting posts 210. These posts facilitate the securing of the spring buffers, preventing them from falling off.

[0026] The spring seats 200 are symmetrically arranged, with each side securing two connecting ribs 300. These ribs 300 are fixed to the front and rear sides of the housing 110, respectively. These ribs 300 are arranged tangentially to the outer circumference of the housing 110, ensuring a strong connection between the ribs 300 and the housing 110 and improving the load capacity of the device. The outer ring 120 is positioned between the two connecting ribs 300. This ensures that the outer ring 120 can rotate normally between the two connecting ribs 300, preventing obstruction by the connecting ribs 300 and allowing the locking member 130 to properly release. The symmetrical arrangement of the spring seats 200 ensures even load distribution on both sides of the axle box. This ensures that the springs are equally stressed on both sides, thereby maintaining the overall system's balance. This results in smoother vehicle travel and improved anti-drift capability, particularly when the vehicle is subjected to external lateral forces (such as centrifugal force during cornering). Because the spring seats 200 are symmetrically arranged, the deviation or deformation of the axle box caused by excessive weight on one side can be effectively reduced, thereby avoiding abnormal wear or equipment damage caused by lateral force.

[0027] There are at least two locking bundles 132, which are equidistantly arranged along the circumference of the guide tube 131. This ensures that the locking force is even in all directions and the bearing is firmly fixed to prevent it from falling off.

[0028] The number of the hole slots 112 is the same as the number of the locking beams 132. The hole slots 112 are strip-shaped slots arranged around the circumference of the box body 110. In the normal unlocked state, the protrusions 133 and the interference blocks 121 are located at both ends of the hole slots 112, ensuring that the protrusions 133 and the interference blocks 121 are staggered with each other, and the rotation range of the outer ring 120 can only be limited to the area of ​​the strip slots, reducing the possibility of random rotation and slippage. The protrusions 133 are provided with an inclined surface 134 on the side facing the interference block, and the cross-section of the interference block 121 is semicircular. The contact area between the interference block 121 and the protrusion 133 is reduced, and the inclined surface 134 is used to facilitate rotation. When the interference block 121 starts from the inclined surface 134, it interferes with the protrusion 133 inward, which is convenient for use.

[0029] A reinforcing rib 400 is also provided. The lower side of the reinforcing rib 400 is fixedly connected to the connecting rib 300 and the upper surface of the spring seat 200. The end of the reinforcing rib 400 near the box body 110 is respectively connected to the front and rear side surfaces of the box body 110. This ensures the connection strength between the spring seat 200 and the box body 110, improves the bearing capacity of the spring seat 200, prevents damage, and extends the service life of the device.

[0030] The upper surface of the spring seat 200 is further provided with a circular groove 220, and the spring mounting post 210 is concentrically fixed in the circular groove 220. The circular groove 220 ensures that the lower end of the installed spring buffer is set in the circular groove 220 and is not easily offset, thereby ensuring that the spring buffer is firmly fixed and not easily fall off.

[0031] The outer ring 120 is also provided with a handle 122, which is fixed to the outer side of the outer ring 120. It is convenient to provide a force point for the outer ring 120, facilitate the rotation of the outer ring, and facilitate the locking and loosening of the locking member.

[0032] The housing 110 is provided with a first screw hole 113, and the outer ring 120 is provided with a corresponding second screw hole 123. The first screw hole 113 is aligned with the second screw hole 123, and the abutment block 121 abuts against the projection 133 to lock the bearing. This ensures that during use, the bolts can be fixed and locked for a long time, firmly fixing the bearing and preventing the outer ring from shifting and loosening due to operational vibration, thus avoiding potential safety hazards. The bolts are located on the outside, allowing for intuitive observation of the bolt tightness, allowing for timely detection of bearing loosening and facilitating inspection and maintenance.

[0033] The outer ring 120 is integrally cast, and the housing 110, locking member 130, connecting rib 300, and spring seat 200 are integrally connected. In actual casting, the axle box body and spring seat can be integrally cast using a lost foam casting process. This simple and convenient casting process provides a strong and resistant connection between the housing 110, locking member 130, connecting rib 300, and spring seat 200, thereby enhancing the mechanical strength of the device and increasing its load-bearing capacity.

[0034] The present invention has been described with reference to the above embodiments. However, these embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A high-strength cast steel axlebox for high-speed trains, characterized by: It includes an axle box body and spring seats fixed on both sides of the axle box body; The axle box main body comprises a box body, an outer ring and a locking piece; the box body is a cylinder, and the end surfaces of the front and rear ends of the box body are provided with fixing holes; the locking piece comprises a guide tube, a locking bundle and a protrusion; the outer side of the guide tube is connected to the inner side wall of the box body through a connecting block, the guide tube is concentrically arranged in the box body, one end of the locking bundle is fixed on the end surface of the guide tube located inside the box body, and the other end of the locking bundle extends toward the rear end of the box body, and the protrusion is fixed to the outer side surface of the locking bundle; the box body is provided with a hole groove corresponding to the protrusion area, the outer ring is sleeved on the outer side of the box body, the outer ring is slidably matched with the outer surface of the box body, and the inner side of the outer ring is provided with an interference block, and the interference block is arranged in the hole groove. Under normal conditions, the projection and the interference block are staggered; The spring seat is connected and fixed to the left and right sides of the box body through connecting ribs, and a spring mounting column is provided on the upper surface of the spring seat.

2. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: The spring seats are symmetrically arranged, and the spring seat on one side is fixed with two connecting ribs, which are respectively fixed to the side surfaces of the front and rear ends of the box body. The connecting ribs are arranged along the tangent direction of the outer circumference of the box body, and the outer ring is arranged between the two connecting ribs.

3. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: There are at least two locking bundles, and the locking bundles are equidistantly arranged along the circumference of the guide tube.

4. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: The number of the hole grooves is the same as the number of the locking bundles. The hole grooves are strip grooves arranged around the circumference of the box body. The protrusions and the interference blocks are located at both ends of the hole grooves. The protrusions are provided with inclined surfaces on the sides facing the interference blocks, and the cross-section of the interference blocks is semicircular.

5. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: A reinforcing rib is also provided, the lower side of which is fixedly connected to the connecting rib and the upper surface of the spring seat, and one end of the reinforcing rib close to the box body is respectively connected to the side surfaces of the front and rear ends of the box body.

6. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: A circular groove is further provided on the upper surface of the spring seat, and the spring mounting column is concentrically fixed in the circular groove.

7. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: The outer ring is also provided with a handle, and the handle is fixed on the outer side of the outer ring.

8. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: The box body is provided with a first screw hole, the outer ring is provided with a corresponding second screw hole, the first screw hole is aligned with the second screw hole, and the abutment block abuts against the protrusion to lock the bearing.

9. The high-strength cast steel axlebox for high-speed trains according to claim 1, characterized in that: The outer ring is made by integral casting, and the box body, the locking piece, the connecting rib and the spring seat are integrally connected.

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