High-strength axle box body for urban rail vehicle

Abstract

The utility model discloses a high-strength axle box body for urban rail vehicles, which relates to the technical field of axle box bodies and comprises an axle box body, a supporting seat is connected to the lower portion of the inside of the axle box body, positioning blocks are connected to two sides of the supporting seat, supporting frames are connected to two sides of the bottom of the supporting seat, and positioning grooves are formed in the inner wall of the axle box body. Reinforcing blocks are connected to the two sides of the back of the axle box body. First supporting blocks and second supporting blocks are connected to the two sides of the outer surface of the axle box body, and second bolts are connected between the first supporting blocks and the positioning blocks and between the second supporting blocks and the positioning blocks. The end cover, the supporting seat, the first supporting block, the second supporting block, the reinforcing block, the positioning block, the positioning groove and the supporting frame are arranged, the first supporting block and the second supporting block are matched with the first bolt, the positioning block and the supporting seat are limited, meanwhile, the bottom of the positioning groove can be supported, and therefore the structural strength is improved; the structural strength is high, and the service life of the structure is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to axle box body technical field, concretely is a kind of high-strength axle box body for urban rail vehicle. BACKGROUND

[0002] Urban rail transit vehicle type can be mainly divided into: subway train, light rail train, city-region fast rail train, urban fast rail train, monorail train, tramcar etc., on vehicle, the component of coupling wheel set and bogie frame or two-axle car body on axle journal, is called axle box simply.The function is to transmit the weight and load of car body to wheel set, lubricate axle journal, reduce friction, reduce running resistance.

[0003] The application number 202420031094.8 is a kind of railway wagon split type axle box, axle box body is non-closed structure, is fastened and installed combination by support plate;When installing, support plate can be removed first, using from top to bottom mode first axle box body is installed to bearing, then support plate is installed in the lower side of axle box body, ensure the strength of whole structure;Installation interface is U-shaped slot, stable and reliable structure;Support plate is provided with boss, can control the clearance between bearing and support plate, more strong adaptability.

[0004] Although the technical scheme reduces the dismounting difficulty, the connecting surface at the bottom of the U-shaped clamping groove is less, the structure is weak, stress is concentrated at the bending point during vehicle driving, which can easily cause fatigue fracture at the bottom bending point of the U-shaped clamping groove, and the structural strength is low and the service life is short. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a high-strength axle box body for urban rail vehicle to solve the technical problems mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-strength axle box body for urban rail vehicle, comprising an axle box body main body, a support seat is connected inside and below the axle box body main body, and positioning blocks are connected on both sides of the support seat, support frames are connected on both sides of the bottom of the support seat, positioning grooves are formed in the inner wall of the axle box body main body, and reinforcing blocks are connected on both sides of the back of the axle box body main body;First support blocks and second support blocks are connected on both sides of the outer surface of the axle box body main body, and second bolts are connected between the first support blocks, the second support blocks and the positioning blocks;An end cover is connected to the outer surface of the axle box body main body, and first bolts pass through the outer surface of the end cover.

[0007] By adopting the technical scheme, the shaft box body main body can be placed on the top of the bearing from top to bottom, then the worker inserts the positioning block into the positioning groove to complete the installation of the support seat, and finally the worker passes the second bolt through the first support block, the second support block and the reinforcing block and tightens to complete the limiting of the support seat; the worker makes the end cover adhere to the outer surface of the shaft box body main body, then the worker passes the five first bolts through the end cover and tightens, the limiting of the end cover and the shaft box body main body is completed through four bolts, and the other first bolt also passes through the support seat to limit the support seat again; through the cooperation of the first support block, the second support block and the first bolt, the bottom of the positioning groove can be supported while the positioning block and the support seat are limited, so that the structural strength is improved; the end cover is connected with the support seat through a first bolt, so that part of the force borne by the support seat can be transmitted to the end cover, thereby transmitting the force to other areas of the shaft box body main body to improve the structural strength; since the length of the positioning groove is less than the width of the shaft box body main body, the positioning block will not pass through the shaft box body main body completely, at this time the back of the shaft box body main body can support the bottom of the positioning groove, and the thickness of the back of the shaft box body main body is increased through the reinforcing block to improve the structural strength; through the setting of the support frame, the lower side of the positioning groove is supported, so that the bottom of the positioning groove is prevented from being deformed downward under stress, thereby improving the structural strength.

[0008] Further, the first bolt is provided with five, and the end cover is detachably connected with the shaft box body and the support seat through the first bolt.

[0009] By adopting the technical scheme, the worker makes the end cover adhere to the outer surface of the shaft box body main body, then the worker passes the five first bolts through the end cover and tightens, the limiting of the end cover and the shaft box body main body is completed through four bolts, and the other first bolt also passes through the support seat to limit the support seat again.

[0010] Further, the support seat is detachably connected with the positioning groove through the positioning block, and the length of the positioning groove is less than the width of the shaft box body main body.

[0011] By adopting the technical scheme, the worker inserts the positioning block into the positioning groove to complete the installation of the support seat, which is simple and convenient, and the shaft box body main body can support the support seat through the positioning block and the positioning groove.

[0012] Further, the second bolt is detachably connected with the first support block, the second support block and the positioning block.

[0013] By adopting the technical scheme, the worker passes the second bolt through the first support block, the second support block and the reinforcing block and tightens to complete the limiting of the support seat, and the bottom of the positioning groove can be supported at the same time, thereby improving the structural strength.

[0014] Further, the first support block, the second support block and the reinforcing block are fixedly connected with the shaft box body by means of integral forming, and the positioning block and the support frame are fixedly connected with the support seat by means of integral forming.

[0015] By adopting the above technical scheme, the connection between structures is more stable by means of integral forming, and the phenomenon of structure falling off is not prone to occur.

[0016] Further, the top of the support seat is in arc shape.

[0017] By adopting the above technical scheme, the top of the support seat is in arc shape, which can adapt to the shape of the bearing, increase the connecting surface between the support seat and the bearing, and thus improve the stability.

[0018] Further, the support frame is in straight angle trapezoidal section, and the two support frames are mirror image arranged.

[0019] By adopting the above technical scheme, the side below of the positioning groove is supported by the support frame, so as to avoid the bottom of the positioning groove from being bent and deformed downward under stress, and thus improve the structural strength.

[0020] Further, the top of the shaft box body is provided with a first spring mounting groove on one side, and a second spring mounting groove is mounted on the other side.

[0021] By adopting the above technical scheme, when the shaft box body is mounted on the urban rail vehicle, the spring can be mounted conveniently through the first spring mounting groove and the second spring mounting groove.

[0022] Further, the shaft box body, the end cover, the support seat, the first support block, the second support block, the reinforcing block and the positioning block are all forged by 7075 high-strength aluminum alloy.

[0023] By adopting the above technical scheme, the advantages of high strength, corrosion resistance, light weight and reduction of unsprung mass are achieved, the service life is prolonged, and the dynamic performance of the urban rail vehicle is improved.

[0024] In summary, the utility model mainly has the following beneficial effects:

[0025] The utility model discloses a through the setting of end cover, support seat, first support block, second support block, reinforcing block, positioning block, locating groove and support frame, through first support block, second support block cooperation first bolt, can support the bottom of locating groove while limiting positioning block and support seat to improve structural strength, the first bolt also can pass through support seat when installing simultaneously with end cover, and part of force that support seat receives can be passed to end cover, thereby the force is passed to the other area of axle box body main part to improve structural strength, because the length of locating groove is less than the width of axle box body main part, and the positioning block does not pass through axle box body main part completely, and the back of axle box body main part can support the bottom of locating groove at this time, and the thickness of the back of axle box body main part is increased through reinforcing block to improve structural strength, through the setting of support frame, the lower side of locating groove is supported, and the bottom of locating groove is avoided to be stressed to bend and deform downward to improve structural strength, and structural strength is higher, prolongs the service life of structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is structural schematic diagram of the utility model;

[0027] Figure 2 It is back structural schematic diagram of the utility model;

[0028] Figure 3 It is end cover explosion structural schematic diagram of the utility model;

[0029] Figure 4 It is support seat explosion structural schematic diagram of the utility model.

[0030] In the drawing: 1, axle box body main part;2, first spring installation groove;3, second spring installation groove;4, end cover;5, first bolt;6, support seat;7, first support block;8, second support block;9, second bolt;10, reinforcing block;11, positioning block;12, locating groove;13, support frame. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0032] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0033] Embodiment one:

[0034] A kind of high-strength axle box body for urban rail vehicle, such as Figures 1-4As shown, including the shaft box body 1, the shaft box body 1 inside the lower support seat 6 is connected, the support seat 6 top is arc-shaped, the support seat 6 both sides are connected with the locating block 11, the support seat 6 is connected with the locating groove 12 through the locating block 11, the support seat 6 bottom both sides are connected with the support frame 13, the support frame 13 section is right trapezoidal, two support frames 13 are mirror image, the locating block 11 and the support frame 13 are all fixedly connected with the support seat 6 by integral forming, the shaft box body 1 inner wall is provided with the locating groove 12, the length of the locating groove 12 is less than the width of the shaft box body 1, the shaft box body 1 back both sides are connected with the reinforcing block 10;The outer surface of the shaft box body 1 both sides are connected with the first support block 7 and the second support block 8, the first support block 7, the second support block 8 and the reinforcing block 10 are all fixedly connected with the shaft box body 1 by integral forming, the first support block 7, the second support block 8 and the locating block 11 are connected with the second bolt 9, the second bolt 9 is detachably connected with the first support block 7, the second support block 8 and the locating block 11;The outer surface of the shaft box body 1 is connected with the end cover 4, the first bolt 5 penetrates the outer surface of the end cover 4, the first bolt 5 is provided with five, the end cover 4 is detachably connected with the shaft box body 1 and the support seat 6 through the first bolt 5, the shaft box body 1 can be placed on the bearing top from top to bottom, then the staff inserts the locating block 11 into the locating groove 12 to complete the installation of the support seat 6, finally the staff passes the second bolt 9 through the first support block 7, the second support block 8 and the reinforcing block 10 and tightens to complete the limiting of the support seat 6;The staff makes the outer surface of the end cover 4 adhere to the shaft box body 1, then the staff passes the five first bolts 5 through the end cover 4 and tightens, four bolts are used to complete the limiting of the end cover 4 and the shaft box body 1, and the other first bolt 5 also penetrates the support seat 6 to limit the support seat 6 twice, through the first support block 7, the second support block 8 and the first bolt 5, the bottom of the locating groove 12 can be supported while limiting the locating block 11 and the support seat 6, so as to improve the structural strength;The end cover 4 is connected with the support seat 6 through a first bolt 5, so that part of the force received by the support seat 6 can be transmitted to the end cover 4, thereby transmitting the force to other areas of the shaft box body 1 to improve the structural strength;Because the length of the locating groove 12 is less than the width of the shaft box body 1, the locating block 11 will not completely penetrate the shaft box body 1, at this time the back of the shaft box body 1 can support the bottom of the locating groove 12, and the thickness of the back of the shaft box body 1 is increased through the reinforcing block 10 to improve the structural strength;Through the setting of the support frame 13, the lower side of the locating groove 12 is supported, so as to avoid the bottom of the locating groove 12 from being bent and deformed under stress, so as to improve the structural strength.

[0035] Reference Figures 1-3In the above embodiment, the first spring mounting groove 2 is formed on one side of the top of the shaft box body 1, and the second spring mounting groove 3 is mounted on the other side of the top of the shaft box body 1. When the shaft box body 1 is installed on the urban rail vehicle, the first spring mounting groove 2 and the second spring mounting groove 3 are provided to facilitate the installation of the spring.

[0036] Embodiment two:

[0037] On the basis of the above embodiment one, in order to increase the strength of the shaft box body and reduce the spring-down mass, the following settings are made.

[0038] Reference Figures 1-4 In the above embodiment, the shaft box body 1, the end cover 4, the support seat 6, the first support block 7, the second support block 8, the reinforcing block 10 and the positioning block 11 are all forged from 7075 high-strength aluminum alloy, which has the advantages of high strength, corrosion resistance, light weight, reduction of spring-down mass, prolongation of service life and improvement of the dynamics performance of the urban rail vehicle.

[0039] The implementation principle of the utility model is as follows: first, the shaft box body 1 can be placed on the top of the bearing from top to bottom, then the worker inserts the positioning block 11 into the positioning groove 12 to complete the installation of the support seat 6, and finally the worker passes the second bolt 9 through the first support block 7, the second support block 8 and the reinforcing block 10 and tightens to complete the limiting of the support seat 6; the worker makes the end cover 4 adhere to the outer surface of the shaft box body 1, then the worker passes the five first bolts 5 through the end cover 4 and tightens, four of which complete the limiting of the end cover 4 and the shaft box body 1, and the other first bolt 5 also passes through the support seat 6 to limit the support seat 6 again; when the shaft box body 1 is installed on the urban rail vehicle later, the first spring mounting groove 2 and the second spring mounting groove 3 are provided to facilitate the installation of the spring.

[0040] The first support block 7, the second support block 8 cooperate with the first bolt 5, while limiting the positioning block 11 and the support seat 6, the bottom of the positioning groove 12 can be supported, thereby improving the structural strength; the end cover 4 is connected with the support seat 6 through a first bolt 5, so that part of the force borne by the support seat 6 can be transmitted to the end cover 4, thereby transmitting the force to other areas of the shaft box body main body 1 to improve the structural strength; since the length of the positioning groove 12 is less than the width of the shaft box body main body 1, the positioning block 11 will not pass through the shaft box body main body 1 completely, at this time the back of the shaft box body main body 1 can support the bottom of the positioning groove 12, and the thickness of the back of the shaft box body main body 1 is increased through the reinforcing block 10, so as to improve the structural strength; the lower side of the positioning groove 12 is supported through the support frame 13, so as to avoid the bottom of the positioning groove 12 from being bent and deformed downward under stress, thereby improving the structural strength; and since the shaft box body main body 1, the end cover 4, the support seat 6, the first support block 7, the second support block 8, the reinforcing block 10 and the positioning block 11 are all forged by 7075 high-strength aluminum alloy, they have the advantages of high strength, corrosion resistance, light weight and reduced unsprung mass, thereby prolonging the service life and improving the dynamics of the urban rail vehicle.

[0041] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the person skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A high-strength axle box body for urban rail vehicles, comprising an axle box body main body (1), characterized in that: The axle box body (1) is connected to a support base (6) at the bottom inside, and a positioning block (11) is connected to both sides of the support base (6). A support frame (13) is connected to both sides of the bottom of the support base (6). A positioning groove (12) is opened on the inner wall of the axle box body (1). A reinforcing block (10) is connected to both sides of the back of the axle box body (1). A first support block (7) and a second support block (8) are connected to both sides of the outer surface of the axle box body (1). A second bolt (9) is connected between the first support block (7), the second support block (8) and the positioning block (11). An end cap (4) is connected to the outer surface of the axle box body (1). A first bolt (5) passes through the outer surface of the end cap (4).

2. The high-strength axle box body for urban rail vehicles according to claim 1, characterized in that: Five first bolts (5) are provided, and the end cap (4) is detachably connected to the shaft box body (1) and the support seat (6) by means of the first bolts (5).

3. The high-strength axle box body for urban rail vehicles according to claim 2, characterized in that: The support base (6) is detachably connected to the positioning groove (12) via the positioning block (11), and the length of the positioning groove (12) is less than the width of the shaft box body (1).

4. The high-strength axle box body for urban rail vehicles according to claim 3, characterized in that: The second bolt (9) is disassembled and connected to the first support block (7), the second support block (8) and the positioning block (11).

5. The high-strength axle box body for urban rail vehicles according to claim 4, characterized in that: The first support block (7), the second support block (8) and the reinforcing block (10) are all fixedly connected to the main body of the axle box (1) by integral molding, and the positioning block (11) and the support frame (13) are all fixedly connected to the support seat (6) by integral molding.

6. The high-strength axle box body for urban rail vehicles according to claim 5, characterized in that: The top of the support base (6) is arc-shaped.

7. The high-strength axle box body for urban rail vehicles according to claim 5, characterized in that: The cross-section of the support frame (13) is a right trapezoid, and the two support frames (13) are set in a mirror image.

8. The high-strength axle box body for urban rail vehicles according to claim 1, characterized in that: The axle box body (1) has a first spring mounting groove (2) on one side of its top, and a second spring mounting groove (3) on the other side of its top.

9. The high-strength axle box body for urban rail vehicles according to claim 8, characterized in that: The main body (1), end cap (4), support base (6), first support block (7), second support block (8), reinforcing block (10) and positioning block (11) of the axle box are all forged from 7075 high-strength aluminum alloy.

Images