A kind of commercial vehicle/comm..vehicle gearbox beam
Technical field
The utility model relates to automobile gearbox auxiliary mechanism technical field, specifically, relates to a kind of commercial vehicle/comm..vehicle gearbox beam.
Background technology
Change speed gear box mainly refers to the change speed gear box of automobile, and it is divided into manual, automatic two kinds, and Manual transmission mainly is comprised of gear and axle, produces variable-speed torque-converting by different gear combination; And Automatic Transmission is comprised of hydraulic torque converter, planetary wheel and hydraulic control system, and the mode by fluid power transmission and gear combination reaches variable-speed torque-converting.Function is: one, change transmitting ratio; Two, in the constant situation of hand engine rotation, automobile can be fallen back travel; Three, utilize neutral, interrupt transmission of power, with driving engine can start, idling, and be convenient to shifting of transmission or carry out power output.
Change speed gear box need to use crossbeam to support, and existing gearbox beam structure is comparatively complicated, and cost is higher, and the strength and stiffness of crossbeam are also not satisfactory, and product design is difficult to guarantee in the manufacturing process simultaneously, and yield rate is relatively low.
The utility model content
The utility model is complicated in order to solve existing commercial vehicle/comm..vehicle gearbox designs, and cost is higher, and beam strength and rigidity are undesirable, and the quality of product and yield rate all are difficult to the problem that guarantees in the manufacturing process, and a kind of commercial vehicle/comm..vehicle change speed gear box is provided.
The technical matters of the required solution of the utility model can be achieved through the following technical solutions:
A kind of commercial vehicle/comm..vehicle gearbox beam is characterized in that, comprising: snap together take the shape of the letter U, upper beam and the underbeam of both sides band flange, the U-shaped bottom centre position is provided with brace panel between described upper beam and the underbeam.
In the utility model, be provided with stay bearing plate between described upper beam and the underbeam, described stay bearing plate comprises the intermediate support plate that is arranged on upper beam and underbeam U-shaped bottom centre position and is arranged on the two end supports plate at upper beam and underbeam two side flanging places.
Described intermediate support plate and the two end supports plate tubular for not sealing, two end supports plate up and down two ends have the boss that the interval arranges, and described two end supports plate is recessed notch geometry in the sweep upper and lower end parts.When casting, to avoid extruding to form unfairness, improve the quality of products and yield rate.
In the utility model, described intermediate support plate is two, and the brace panel two ends are provided with the perforate that matches with two intermediate support plates, brace panel and two intermediate support plates and the welding of putting the beams in place, and two intermediate support plate upper ends contact with the upper beam inner face; The part of described brace panel between two stay bearing plates is a few font hollow structures, to promote integral rigidity, also reduced weight.
In the utility model, in order to strengthen the strength and stiffness of crossbeam, described upper beam is provided with deep gouge to lower recess at the brace panel correspondence position; Described upper beam and underbeam are provided with the reinforced rib that extends to respectively two side flanging places in the deep gouge both sides, described reinforced rib is two in each side of upper beam and underbeam.
In the utility model, in order to reduce the crossbeam overall weight, described upper beam and underbeam both sides are respectively equipped with circular and kidney-shaped lightening hole near end regions.
Commercial vehicle/comm..vehicle change speed gear box of the present utility model, adopt upper beam, underbeam and the middle mode that brace panel is set, simplified the structure of gearbox beam, the strength and stiffness of crossbeam have been improved, the setting of intermediate support plate and two end supports plate, also avoided extruding formation unfairness when punching press, improved the quality of products and yield rate.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is perspective view of the present utility model.
Fig. 2 is the perspective view after the utility model disassembles upper beam.
The specific embodiment
In order to make technological means of the present utility model, creation characteristic, to reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Purport of the present utility model is, by the analysis to product design and yield rate in existing commercial vehicle/comm..vehicle gearbox beam structure, weight, rigidity, intensity and the manufacturing, for problems such as existing commercial vehicle/comm..vehicle gearbox beams, provide a kind of simple in structure, materials are less, possess the preferably rear support part of Rigidity and strength characteristic.
Referring to Fig. 1 and Fig. 2, commercial vehicle/comm..vehicle gearbox beam of the present utility model, comprise upper beam 1 and underbeam 2, upper beam 1 and underbeam 2 snap together, upper beam 1 and underbeam 2 take the shape of the letter U, and the U-shaped bottom is for having the planar structure of certain-length, and the both sides of upper beam 1 and underbeam 2 are with flange, the flange 11 of upper beam 1 is slightly larger than the flange 21 of underbeam 2, to cover underbeam 2.
Adopt stay bearing plate to support between upper beam 1 and the underbeam 2, the U-shaped bottom centre position at upper beam 1 and underbeam 2 in the utility model is provided with two intermediate support plates 3, is provided with respectively a two end supports plate 4 at upper beam 1 and 2 liang of side flanging places of underbeam.
Intermediate support plate 3 adopts the tubular structure that does not seal, cover has brace panel 5 on two intermediate support plates 3,5 of brace panels are to be enclosed within on the two middle brace panels 5 by the perforate that matches with two intermediate support plates 3 is set at its two ends, brace panel 5 and two intermediate support plates 3 and 1 welding of putting the beams in place, two intermediate support plate 3 upper ends contact with 1 inner face of putting the beams in place, and the part of brace panel 5 between two stay bearing plates 3 is a few font hollow structures.Like this, brace panel 5 is fixedly mounted between upper beam 1 and the underbeam 2, has promoted the integral rigidity of gearbox beam, has also reduced overall weight.
The tubular structure that the 4 same employings of two end supports plate are not sealed, different from intermediate support plate 3 is, and the two end supports plate has the boss 41 that the interval arranges in two ends about in the of 4, and simultaneously, two end supports plate 4 is recessed notch geometry 42 in the sweep upper and lower end parts.Like this, can when casting, avoid extruding to form unfairness, improve the quality of products and yield rate.
In the utility model for the strength and stiffness that improve crossbeam and the overall weight that reduces crossbeam, also adopted following setting: the deep gouge 12 to lower recess is set in 1 position corresponding with brace panel 5 of putting the beams in place, upper beam 1 and underbeam 2 all arrange reinforced rib in deep gouge 12 both sides, reinforced rib 13 on the upper beam 1 extends to flange 11 places of upper beam 1 always, 22 of reinforced ribs on the underbeam 2 extend to flange 21 places of underbeam 2 always, simultaneously, the reinforced rib 13 on the upper beam 1 and the reinforced rib 22 on the underbeam 2 all arrange two in each side of upper beam 1 and underbeam 2; 1 also be provided with respectively corresponding circular lightening hole 14 and kidney-shaped lightening hole 23 with 2 liang of side flanging places of underbeam and put the beams in place.
By above-mentioned setting, when gearbox beam of the present utility model has been simplified structure, the strength and stiffness of crossbeam have also been improved, the setting of intermediate support plate 3 and two end supports plate 4, also avoided extruding formation unfairness when punching press, improved the quality of products and yield rate.
Below only be described with regard to the utility model preferred embodiment, but can not be interpreted as it is limitations on claims.The utility model not only is confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.