CN2242210Y - Quasi-structural-frame type, low power-supply bogie for railway transportation - Google Patents

Abstract

The utility model relates to a quasi-structural-frame type, low power steering frame for railway transportation, which comprises a quasi-structural frame, a suspending device of an axle box spring and two standard wheel pairs. The suspending device of the axle box spring is composed of the axle box spring, an inclined wedge, a rubber block, etc. The quasi-structural frame is composed of two side frames and a swinging pillow which are assembled together by four elastic lining sleeves, a positioning pin and a positioning pin base. The center part of each side frame is provided with a lower side support with a spherical surface, which is placed with a lower side bearing iron used for bearing the vertical load of a vehicle body. The steering frame has high critical speed and low self weight. The utility model enables the action of a wheel track of a heavy loading wagon with the axle weight of 25 tons to be forcibly reduced to be close to the level of the existing vehicle with the axle weight of 21 tons.

Description

The railway transportation is hanged down power truck with accurate framework type

The utility model relates to a kind of railway transportation with the low power truck of accurate framework type, belongs to the bogies for railway vehicles class.

At present, existing bogies for railway vehicles has two kinds of three-major-items formula and framework types by framework form branch.Three-major-items formula bogie truck, its framework is sleeved on together by a bolster and two bogie side frames.Because bogie side frame is little and unstable to the diamond resistant rigidity of bolster, so bogie side frame easily produces rhombus displacement and splayed displacement to bolster, causes critical speed low, wheel is big to transverse force, and owing to adopt central spring suspension, unsprung weight is big, and wheel is to firmly also big with the vertically-acting of track; The bolster of framework type bogie truck and two bogie side frames are welded into one, have framework normotopia ability height, advantage that unsprung weight is light, but wheel load is harmonious poor when circuit distortion, framework distortion, in addition, it is taken turns can not become radial position by curve the time, takes turns also bigger to transverse force.The above-mentioned wheel firmly heavily increasing along with axle with interorbital vertical, crosswise movement and sharply strengthening caused wheel, circuit to quicken abrasion and damaged, and limited the application of heavy axle load wagon in China.

The purpose of this utility model is to provide a kind of low wheel track action bogie truck firmly, the heavy-duty freight car that this bogie truck makes axle weigh 25 tons firmly is reduced near the existing axle of China the action of track and weighs 21 tons of car levels, and critical speed height, the high capacity waggon that makes axle weigh 25 tons can adapt to China's circuit operation.

This bogie truck mainly is made up of to, special journal box spring suspension gear and by the accurate framework that a side frames and a bolster combine the wheel of standard.

Feature of the present utility model has;

1, in the journal box spring suspension gear, the vibration damping wedge is established in the axle box inboard, and the axle box outside adds the caoutchouc elasticity piece, combines with journal box spring to make axle box (in succession wheel to) and framework all obtain the elasticity location of suitable rigidity at vertical and horizontal.

2, each bogie side frame and bolster are formed accurate framework by the rubber bush and the locating dowel pin of two positioned vertical.In horizontal plane,, make bogie side frame have enough big diamond resistant rigidity and only produce a very little rhombus displacement to bolster owing to quite big radial rigidity of rubber coating and the bigger width between centers of two locating dowel pins; And in vertical plane surface, utilizing the little characteristic of the axial shear rigidity of rubber bush, bogie side frame more easily produces to nod relative to bolster and rotates.

3, the bottom side bearing iron of bogie side frame central authorities setting is born the whole vertical loads of car body.Bolster and cartridge do not bear vertical load.Upper and lower side bearing sliding surface adopts low-friction coefficient and abrasion resistant new material, and the friction resistance moment that side bearing produces when guaranteeing the bogie truck revolution has less an amount of value.In the truck center plate wear-resistant sleeve is housed simultaneously.

Fig. 1 is the scheme drawing of the utility model embodiment.Wherein 1 standard wheels is right; 2 axle boxes; 3 bogie side frames (part of framework); 4 outer springs; Spring in 5; 6 upper springs; 7 wedges; 8 wedge master friction plates; 9 drawing strickle guide seat friction plates; 10 rubber blocks.

Fig. 2 is the framework schematic top plan view.3 bogie side frames wherein; 11 bolster; 12 rubber bushs; 13 locating dowel pins; 14 location key seats.

Fig. 3 is a framework A-A generalized section.

Fig. 4 is a framework B-B generalized section.

Below in conjunction with accompanying drawing the utility model is further described:

This bogie truck is formed (as shown in Figure 1, 2) by the wheel of two standards to 1,4 group of special journal box spring suspension gear and accurate framework, and accurate framework is suspended on wheel to last by the journal box spring suspension gear.

The journal box spring suspension gear is formed (as shown in Figure 1) by axle box 2, outer spring 4, interior spring 5, upper spring 6, one-sided wedge 7, main friction plate for cam driver 8, drawing strickle guide seat friction plate 9 and rubber block 10.One-sided wedge 7 is sitting on the spring 4,5 of axle box 2 one wings, and wedge 7 produces vertical equity component under the vertical load effect, through main friction plate for cam driver 8 axle box 2 is clipped between the drawing strickle guide friction plate 9 and main friction plate for cam driver 8 of flexible rubber block 10 supportings.Main friction plate for cam driver 8, drawing strickle guide seat friction plate 9 play shock damping action with the friction force that axle box produces to the vibration of journal box spring.The compression of rubber block 10 and shear rigidity, with inside and outside spring, the radial rigidity of upper spring is lumped together, and makes axle box in the elasticity location that vertically, laterally all obtains suitable rigidity value.

The accurate framework of this bogie truck is by 12,4 locating dowel pins 13 of 11,4 rubber bushs of 3,1 bolster of 2 bogie side frames and is cemented in the framework (as Fig. 2, shown in Figure 3) that the location key seat 14 on the bogie side frame 3 is formed.Because rubber bush 12 has sizable radial rigidity, is aided with the bigger spacing in two locating dowel pin centers again, make 3 pairs of bolster 11 of bogie side frame that bigger gyro rigidity (being diamond resistant rigidity) be arranged in horizontal plane, therefore framework has strong normotopia ability, bogie truck critical speed height; And in vertical plane surface (as shown in Figure 3), the longitudinal center line of two rubber bushs 12 is in the circular arc tangential line direction of rotating around bolster 11 centers, rubber bush 12 its axial shear rigidities are little again, therefore bogie side frame can be changed places and be produced the rotation of nodding around bolster 11, guarantee that when circuit twisted, wheel still had preferably all carrying property.

By shown in Fig. 1,4 as seen, central authorities at bogie side frame 3, be provided with the bottom side bearing holder 15 of sphere, be placed with the bottom side bearing iron 16 of bearing the whole vertical loads of car body on it, central authorities also have bolster 11 and truck center plate 17, and bolster 11 and truck center plate 17 do not bear vertical load, and low-friction coefficient and abrasion resistant side bearing anti-wear gasket 18 are housed on the bottom side bearing 16, the side bearing friction resistance moment that produces when making the bogie truck revolution has less an amount of value, reduces wheel to transverse force.For convenient maintenance, abrasion resistant cartridge lining 19 is housed in truck center plate 17.

In sum, the utility model proposes a kind of full side bearing load-bearing and accurate framework type and have the bogie truck of special axle box spring suspension structure.Guaranteed this bogie truck critical speed height by its special construction,, vertical, the crosswise movement of track have been exerted oneself firmly to be reduced to approaching existing than the wheel track action that conventional bogie greatly reduces, makes axle to weigh 25 tons of heavy-duty freight cars weigh 21 tons of car levels from heavy and light.Be fit to China's circuit utilization, can make China railways unit's train capacity improve 20～25%.

Claims (1)

1. a railway transportation comprises that with the low power truck of accurate framework type accurate framework, journal box spring suspension gear and two standard wheels to (1), is characterized in that;

A, described journal box spring suspension gear, comprise axle box (2), outer spring (4), interior spring (5), upper spring (6), wedge (7), main friction plate for cam driver (8), drawing strickle guide seat friction plate (9) and rubber block (10), wedge (7) are sitting on the spring (4), (5) of axle box (2) one wings, and axle box (2) is clipped between the drawing strickle guide seat friction plate (9) and main friction plate for cam driver (8) of rubber block (10) supporting;

B, described accurate framework be by two bogie side frames (3), bolster (11) is by 4 resilient bushings (12), locating dowel pin (13) and be cemented in the framework that the locating dowel pin block set (14) on the bogie side frame (3) fits together, accurate framework is suspended on wheel on (1) by the journal box spring suspension gear;

C, described bogie side frame (3) central authorities are provided with the bottom side bearing holder (15) of sphere, be placed with the bottom side bearing iron (16) of bearing whole deadweights of car body and load-carrying on it, central authorities also have truck center plate (17) and bolster (11), the wear-resisting of low frictional factor and bottom side bearing anti-wear gasket (18) are housed on the bottom side bearing iron (16), abrasion resistant cartridge lining (19) is housed in the truck center plate (17).

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