Guide pillar for bogie of passenger train

Abstract

The utility model discloses a guide pillar for a railway carriage bogie, which is suitable for a 209T / P type carriage bogie and is formed by integral forging, the guide pillar structurally comprises a stepped pillar body and a base, a stepped hole inner cavity coaxial with the pillar body is arranged inside the stepped pillar body, a plurality of bolt blind holes used for connecting baffle bolts are arranged on the plane of the end portion of the stepped pillar body, and the bolt blind holes are arranged on the base. Bolt through holes are formed in four corners of the base. Firstly, the structure can eliminate the potential safety hazard that the end cover and the lower end of the guide pillar fall off in the prior art; secondly, compared with a casting split type welding forming structure, the impact resistance of the integral forging structure is improved by 3-4 times, and the integral forging structure can bear impact force caused by increase of centrifugal force when a passenger car passes through a curve due to speed increase of the passenger car and increase of braking inertia of the train; therefore, the problem that cracks are prone to occurring at the joint of the root of the guide pillar and the base can be solved, the service life is prolonged, and operation safety is improved.

Description

Technical Field

[0001] The utility model relates to a guide column used for a railway passenger car bogie. Background Art

[0002] The 209T / P passenger car bogie is one of the main passenger car bogies in my country. Figure 1 As shown, the 209T passenger car bogie is mainly composed of a frame 1, a rocker spring suspension device 2, a wheelset axle box spring positioning device 3, a basic braking device 4, and a generator belt transmission device 5.

[0003] like Figure 2 As shown, the 209T passenger car bogie frame 1 is a one-piece cast steel or press-welded H-shaped steel frame, consisting of two side beams 101, two cross beams 102, and four cantilevered small end beams 103. Each beam has a box-shaped closed cross-section and is cast with sand removal holes and working holes as required. Eight spring guide columns 104 are cast on the bottom surface of the side beams 101 between the cross beams 102 and the cantilevered small end beams 103 for mounting the axlebox spring struts.

[0004] The wheelset axle box spring positioning device 3 of the 209T passenger car bogie is a guide frameless structure, located on the side of the wheelset 6, and specifically adopts a dry friction guide column type elastic positioning structure, such as Figure 3 As shown, it primarily comprises a guide post 301, a guide post locating seat 302, an elastic locating sleeve 303, and an axle box spring 304. The base of the guide post 301 is connected to the spring guide post seat 104 via four bolts. The elastic locating sleeve 303 is composed of an inner and outer sleeve made of Q235 steel and an elastic sleeve made of rubber, which is pressed into place between the two sleeves. The inner sleeve of the elastic locating sleeve 303 is dynamically fitted with the guide post 301, while the outer sleeve of the elastic locating sleeve 303 is dynamically fitted with the guide post locating seat 302 below.

[0005] like Figure 4 As shown, in order to prevent the elastic positioning sleeve 303 from falling, a stop cover 305 is provided below it and fastened to the end cover 307 with M10×25 bolts 306. The end cover 307 and the inner circular surface of the lower end of the guide column 301 are press-fitted together by interference fit or fixedly connected by welding.

[0006] The main difference between the 209P passenger car bogie and the 209T passenger car bogie is that the 209P bogie frame has no small end beams at both ends, the 209P bogie adopts disc brakes and single-sided tread cleaning, and the guide column 301 structure used in the two models is the same.

[0007] The existing guide column 301 structure is formed by casting and split welding. It has the following defects: 1. Interference fit or welding method causes the end cover 307 and the lower end of the guide column 301 to fall off, which may cause safety accidents. 2. Due to the speed increase of passenger cars, cracks are prone to appear at the connection between the root of 301 and the base, affecting train safety. Summary of the Invention

[0008] Purpose of the invention: In view of the above-mentioned prior art, a guide column for a railway passenger car bogie is proposed to solve the above-mentioned two defects.

[0009] Technical solution: A guide column for a railway passenger car bogie, the guide column is formed by integral forging, the structure of the guide column includes a stepped column body and a base, the stepped column body is provided with a stepped hole cavity coaxial with the column body, the end plane of the stepped column is provided with a plurality of blind bolt holes for connecting baffle bolts, and the four corners of the base are provided with bolt through holes.

[0010] Furthermore, the stepped column has a two-section structure, and the transition portion is arc-shaped.

[0011] Furthermore, the surface of the connection between the stepped column and the base is arc-shaped.

[0012] Furthermore, a plurality of annular oil grooves are arranged at intervals on the surface of the front narrow section of the stepped column.

[0013] Furthermore, the surface of the front narrow section of the stepped column is coated with anti-rust oil, and the surface of the rear thick section of the stepped column, the base and the inner cavity of the stepped hole are all coated with anti-rust paint.

[0014] Beneficial effects: Compared with the casting split-type welding forming in the prior art, the guide column of the utility model is suitable for the 209T / P passenger car bogie and is formed by integral forging. First, it can eliminate the safety hazard of the end cover and the lower end of the guide column falling off mentioned in the prior art; secondly, the integral forging structure has a structural impact resistance capacity improved by 3 to 4 times compared with the casting split-type welding forming structure. It can withstand the increased centrifugal force caused by the speed increase of the passenger car when passing through the curve, and the impact force caused by the increased braking inertia of the train. Therefore, it can eliminate the problem of cracks easily occurring at the connection between the root of the guide column and the base, thereby improving the service life and operation safety.

[0015] Furthermore, the stepped column has a two-section structure, the transition portion is an R20mm arc, and the connection between the stepped column and the base is an R8mm arc. These two arcs are used to reduce the torque on the transition section and the connection with the base, further protecting the guide column structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the 209T passenger car bogie;

[0017] Figure 2 This is a schematic diagram of the frame structure of the 209T passenger car bogie;

[0018] Figure 3 This is a schematic diagram of the structure of the existing wheelset axle box spring positioning device of the 209T passenger car bogie;

[0019] Figure 4 This is a schematic diagram of the existing cover connection structure of the 209T passenger car bogie;

[0020] Figure 5 It is a structural diagram of the guide column of the utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the guide post of the utility model;

[0022] Figure 7 It is a schematic diagram of the base structure of the guide column of the utility model. DETAILED DESCRIPTION

[0023] The present invention will be further explained below in conjunction with the accompanying drawings.

[0024] like Figures 5 to 7 As shown, a guide column for a railway passenger car bogie is suitable for a 209T / P type passenger car bogie, and the guide column is integrally forged.

[0025] The guide column structure consists of a stepped column body 7 and a base 8. The stepped column body 7 has a coaxial stepped bore 9 within it. Two blind bolt holes 10 are defined on the flat end of the stepped column body 7 for attaching baffle bolts. The depth of these blind bolt holes 10 is 35±5mm, and the spacing is 32mm. The base 8 has through-holes 11 at each corner for attaching the spring guide column seat.

[0026] Specifically, the stepped column 7 is a two-section structure, the transition portion is an R20mm arc, and the connection between the stepped column 7 and the base 8 is an R8mm arc, which is used to reduce the torque on the transition section and the connection with the base, thereby protecting the guide column structure.

[0027] Two annular oil grooves 12 are provided on the front narrow section of the stepped column 7, with a groove width of 3 mm and a groove depth of 1 mm, and a distance of 35 mm between the two annular oil grooves. The two annular oil grooves 12 help to improve the lubricity between the outer elastic positioning sleeve and the stepped column 7.

[0028] The surface of the front narrow section of the stepped column 7 is coated with anti-rust oil, and the surfaces of the rear thick section of the stepped column 7, the base 8 and the inner cavity 9 of the stepped hole are all coated with anti-rust paint.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A guide post for a railway passenger car bogie, characterized in that: The guide column is formed by integral forging, and the structure of the guide column includes a stepped column (7) and a base (8). The stepped column (7) is provided with a stepped hole cavity (9) coaxial with the column. The end plane of the stepped column (7) is provided with a plurality of bolt blind holes (10) for connecting baffle bolts, and the four corners of the base (8) are provided with bolt through holes (11).

2. The guide post for a railway passenger car bogie according to claim 1, characterized in that: The stepped column (7) is a two-section structure, and the transition portion is arc-shaped.

3. The guide post for a railway passenger car bogie according to claim 1 or 2, characterized in that: The surface of the connection between the stepped column (7) and the base (8) is arc-shaped.

4. The guide post for a railway passenger car bogie according to claim 1 or 2, characterized in that: A plurality of annular oil grooves are arranged at intervals on the surface of the front narrow section of the stepped column (7).

5. The guide post for a railway passenger car bogie according to claim 4, characterized in that: The surface of the front narrow section of the stepped column (7) is coated with anti-rust oil, and the surface of the rear thick section of the stepped column (7), the base (8) and the inner cavity (9) of the stepped hole are all coated with anti-rust paint.

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