CN2040866U

CN2040866U - Sleeper beam upper center plate device of goods wagon

Info

Publication number: CN2040866U
Application number: CN 88218422
Authority: CN
Inventors: 潘铭贵; 代龙; 顾华仪; 周焕; 丁勇; 杨序衡; 陈兴华; 赵忠平; 张水兴; 单明
Original assignee: Cars Locomotive & Car Research Institute; TRADE UNION WORKERS TECHNOLOGY
Current assignee: Cars Locomotive & Car Research Institute; TRADE UNION WORKERS TECHNOLOGY
Priority date: 1988-09-27
Filing date: 1988-09-27
Publication date: 1989-07-12

Abstract

The utility model relates to the sleeper beam upper center plate device of a goods wagon. The diameter of the upper center plate is larger than the space of a middle beam, the center plate is positioned on the middle beam, and the center plate is connected with the middle beam and the lower cover plate of the sleeper beam through the form of riveting or welding. The phenomenon of stress concentration and the problem of fatigue crack at the point of the circular arc of the center plate are effectively solved. Both sides of the carrying surface of the upper center plate are respectively provided with a plane notch along the parallel direction of the center line of the middle beam, reducing the phenomenon of high stress concentration produced by the side rolling vibration of the goods wagon. The utility model has important effects of improving the carrying capacity of the goods wagon, reducing the crack ratio of the center plate, and guaranteeing the driving safety, and is especially suitable to be used for railway heavy load goods wagons.

Description

Sleeper beam upper center plate device of goods wagon

The utility model belongs to railway truck sleeper beam cartridge structure member, mainly is connected and load bearing component with bogie truck as the car body underframe.

At present, all to adopt the carrying diameter be the planar structure of 300mm to the general-duty body center plate on the China railways lorry, and is provided with six reinforced ribs at cartridge base plate back, finds in the use that at the scene seminess more often appears in this kind structure.Its major cause is: (1) cartridge size is less than normal, and 300mm only, and central sill adopts 310 B-mode steel usually so do not match with the home record spacing of central sill, causes firm change not wait, and causes the increase of bolster center filler stress; (2) the cartridge carrying surface is the plane, and the cartridge diameter is little, easily produces truck center plate point contact phenomena when car body is made rolling, thereby high-stress concentration occurs; (3) it is too close that the body center plate back side casts six reinforced ribs, stress concentration is big, for above-mentioned reasons, and cause the first shed repair phase of lorry cartridge crackle rate up to 60%, the second shed repair phase crackle rate is up to 80%, seriously threatened the safety of railway freight, china railway is used to replace with the spent fund of cartridge every year just up to more than millions of units.

The purpose of this utility model provides a kind of cartridge diameter and middle beam spacing is complementary, the load-carrying capacity height, and stress concentration is little, and has the railway truck body center plate device of enough strength at repeated alternations and resistance to abrasion.Feature of the present utility model is to adopt major diameter body center plate carrying surface, makes the cartridge diameter greater than middle beam spacing, and is landed on the central sill, has so just improved the cartridge support problem, has avoided cartridge circular arc Root Stress to concentrate and the endurance crack of generation.And, respectively be cast with a facet breach, thereby the stress concentration phenomenon that is produced when having reduced the vehicle rolling along central sill centerline direction both sides at the body center plate carrying surface.At the body center plate back side, reinforced rib changes four reinforced ribs of cross layout into, has reduced the casting stress concentration phenomenon, and has protected the intensity of cartridge itself.Two kinds of forms are welded and riveted to this kind body center plate structure with the branch that is connected of central sill and sleeper beam lower cover and center filler in addition.

Be described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the riveted joint embodiment front view of the utility model device;

Fig. 2 is this device riveted joint embodiment upward view;

Fig. 3 is this device riveted joint embodiment body center plate front view;

Fig. 4 is this device riveted joint embodiment body center plate upward view;

Fig. 5 is the utility model device welding embodiment front view;

Fig. 6 is this device welding embodiment upward view;

Fig. 7 is this device welding embodiment body center plate front view;

Fig. 8 is this device welding embodiment body center plate birds-eye view.

Fig. 1, Fig. 2, Fig. 3, shown in Figure 4 be riveted joint embodiment of the present utility model, the diameter d of its body center plate (3) is 360～380mm, can strengthen the loadintensity of cartridge on the one hand, the more important thing is the stressed of cartridge (3) is landed on the central sill (5), can effectively solve the problem of center filler (2) insufficient rigidity, and reduce the stress concentration phenomenon.Four reinforced ribs (7) that are cross layout are arranged at the back of body center plate (3), and it is more reasonable that the shrink stress when making casting like this distributes, and both reduced the casting stress concentration phenomenon, can keep the intensity of cartridge itself again.In addition, in body center plate (3) and car body central sill (5) line of centers both sides, respectively be cast with dark a 6～7mm on the carrying surface of body center plate (3), the plane breach (12) of wide 30～35mm, thereby greatly reduce the stress concentration phenomenon that the vehicle rolling is produced, transfinite and increase the service life in order to prevent abrasion, the cylinder of cartridge carrying surface diameter d, adopted the electro-high-frequency hardening processing, its hardness number is HRC30～35, and cast-in-block square flange (9) arranged on the top of cartridge carrying cylinder d, this flange (9) respectively with center filler (2), sleeper beam lower cover (8) and central sill (5) are riveted together by rivet (6).In order to strengthen the intensity of central sill (5), in central sill (5) two side, be axis of symmetry with cartridge (3) center, each riveting has a stiffening plate (11).

Fig. 5, Fig. 6, Fig. 7, Fig. 8 are this device welding embodiment, cartridge diameter d that its body center plate has and the riveted joint form is same and cartridge plane breach (12), and same cartridge cross reinforced rib (7).Its further feature is, Type of Welding has been cancelled the flange (9) of riveted joint body center plate, and cancelled center filler (2), and on body center plate (3), cast out four boss (13), this four boss (13) constitute a square cylinder platform, and respectively with central sill (5), dividing plate (14), dovetail form connecting plate (15) and sleeper beam lower cover (8) weld together.Four drift angles at body center plate boss (13) respectively have one for be connected the skewed slot (16) that welds usefulness with central sill.The top (4) of body center plate (3) is a square hollow scalene cylinder, and scalene cylinder the widest part size just in time matches with the B-mode steel of central sill (5), and hollow scalene cylinder (4) inner chamber has 4 to be the reinforced ribs (7) that cross is arranged.

The utility model compared with prior art, it is strong to have bearing capacity, wearability is good, stress is concentrated the advantages such as little. This kind body center plate new construction is by strengthening sleeper beam rigidity, and supporting with heavily loaded bolster bogie new construction, can greatly improve the bearing capacity of present China lorry, reduce cartridge crackle rate, development China railways heavy-duty freight car, assurance lorry traffic safety will be made significant contribution.

Claims

1, a kind of railway truck sleeper beam body center plate device, comprise a body center plate (3), central sill (5) and sleeper beam (1), sleeper beam bottom plate (8), it is characterized in that the spacing dimension of the diameter of body center plate (3) greater than central sill (5), diameter d is 360～380mm, and body center plate (3) is landed on the central sill base, and it is solid mutually together with central sill (5) and sleeper beam lower cover (8) by riveted joint or welding manner, and be cast with four reinforced ribs (7) that are cross layout at the back of body center plate, on the carrying surface of body center plate (3), be positioned at central sill (5) line of centers both sides and respectively be cast with a plane breach (12), body center plate carrying cylinder (d) is through the hot-cured steel casting in addition.

2, according to the described device of claim 1, it is characterized in that body center plate (3) and central sill (5) and sleeper beam bottom plate (8) are riveted structure, on body center plate (3) carrying cylinder d top one square flange (9) is arranged, this flange (9) is riveted together with center filler (2), central sill (5) and sleeper beam lower cover (8) respectively.

3, according to the described device of claim 1, it is characterized in that body center plate (3) and central sill (5) and sleeper beam bottom plate (8) are welded structure, on body center plate (3), cast out four boss (13), these four boss (13) constitute a square cylinder platform, and respectively with central sill (5), dividing plate (14), dovetail form is made plate (15), and sleeper beam lower cover (8) weld together, four drift angles of this external body center plate boss (13) respectively have one for be connected the skewed slot (16) that welds usefulness with central sill, and the top (4) of body center plate (3) is a square hollow scalene cylinder, and scalene cylinder the widest part size just in time matches with the spacing of central sill (5).