CN2247622Y

CN2247622Y - Dome for flat vane

Info

Publication number: CN2247622Y
Application number: CN 95235278
Authority: CN
Inventors: 杜广生; 赵兰水; 徐洪新
Original assignee: Ministry Of Posts And Telecommunications Machinery Factory Mingshui; Shandong Polytechnic University
Current assignee: Ministry Of Posts And Telecommunications Machinery Factory Mingshui; Shandong Polytechnic University
Priority date: 1995-12-18
Filing date: 1995-12-18
Publication date: 1997-02-19
Anticipated expiration: 2005-12-18

Abstract

The utility model relates to the automotive engineering field. The aerodynamic characteristics of automobiles are improved through a dome installed on the top of the driving cab of a flat-head van truck. The integration of the dome is a streamlined body; the length and width of the bottom of the dome is matched with the forward control cab of the van truck. The longitudinal profile of the windward side of the dome is formed by the joint of a straight line and a parabolic curve. The leading edge transverse curvature of the windward side of the dome is consistent to the front of the matching driving cab; the lateral sectional plane of the central part of the windward side of the dome is a concave surface which levels off gradually from the bottom to the top; the rear parts of both sides are provided with triangle gaps. With the dome, oil consumption is reduced, and the dynamic characteristics and the economy of automobiles are improved.

Description

Tack box-body truck streamlined reefer housing

The utility model relates to the automotive engineering field, especially is installed in the streamlined reefer housing device at tack box-body truck operator's compartment top.

For a long time, because China's traffic facilities fall behind, restricted the raising of road speed.Therefore, not outstanding with the speed of a motor vehicle square loss that the aerodynamic drag that is directly proportional is caused in automotive operation, so reduce aerodynamic drag, the problem that reduces energy resource consumption does not cause people's attention yet.In recent years, the raising of the development of express highway and high-grade highway and auto-industry technical merit has impelled the raising of automobile driving speed.Aerodynamic drag is more and more vacated the energy loss problem that causes in the automotive operation, and beginning is paid attention to by people.In order to improve aerodynamic characteristic, reduce oil consumption, on July 29th, 1992 Chinese Patent Office to disclose an application number be 91203509.9, the utility application of " a long box-body truck streamlined reefer housing " by name.This technology is installed in a long box-body truck operator's compartment top by skeleton supporting, is used for improving the automobile air dynamic characteristic, reduces the energy resource consumption that aerodynamic drag is brought.Current, the trend that is transformed to integral sealing formula loading space by baffle plate boat form loading space has appearred in the loading space design of the big-and-middle-sized lorry of forward control cab.Because van has the envelope that exceeds operator's compartment, aerodynamic characteristic worsens, and aerodynamic drag enlarges markedly, and the energy loss problem is outstanding.Studies show that when the speed of a motor vehicle reached 70 kilometers/hour, the aerodynamic drag of this vehicle just surpassed 50% of its total drag.Therefore, drag reduction, the power saving of researching and solving the tack box-body truck has important practical significance.

The purpose of this utility model provides a kind of streamlined reefer housing device that is installed in tack box-body truck operator's compartment top, comes dredging flow to reduce aerodynamic drag in the automobile top Rational flow, saves fuel oil consumption.

The basic design of this utility model is, top and closed envelope at tack box-body truck operator's compartment exceed in the space of operator's compartment, fixedly mounting a bottom surface and operator's compartment is complementary, by skeleton supporting, whole for the streamlined reefer housing of fairing reduces the Automobile air dynamic resistance, to realize the purpose of energy savings.

Description of drawings:

Fig. 1 installs the streamlined reefer housing schematic representation of apparatus on the tack box-body truck;

Fig. 2 is the streamlined reefer housing schematic perspective view;

Fig. 3 is the A-A cutaway view of Fig. 1.

Reference numeral:

[1] streamlined reefer housing side, streamlined reefer housing [1-a] streamlined reefer housing windward side [1-b] [2] operator's compartment [2-1] operator's compartment drip rail [3] anchor fitting [3-1] fixedly fishplate bar [3-2] bridge piece [3-3] fishplate bar [3-4] tightening screw [3-5] connect support tube [4] lorry envelope

As depicted in figs. 1 and 2, kuppe [1] is by windward side [1-a] and two sides [1-b] consists of, and integral body is fairing. The length of its bottom and width and van Cab over engine is complementary. The longitudinal profile of kuppe windward side [1-a] be by straight line and The curve kiss connects composition, and its underpart leading edge is straight line, and upper curve is parabola, its straight line Part accounts for 20%～25% of windward side longitudinal length. The leading edge of kuppe windward side [1-a] Cross curvature is consistent with supporting driver's cabin front, and its center parts transversely section is concave surface, And it is flat to become gradually from bottom to top; The concave surface width accounts for 60～70% of windward side width; Both sides It is 60 °～70 ° triangle gap that face [1-b] rear portion has angle. Pass through fixture [3] kuppe [1] is fixed on driver's cabin [2] top. Fixture [3] is installed in respectively The two sides of kuppe [1] and the van driver's cabin [2] that matches. As shown in Figure 3, Fixture [3] is by fixedly fishplate bar [3-1], bridge piece [3-2], fishplate bar [3-3] Trip bolt [3-4] connects support column [3-5] and consists of, and fixedly fishplate bar [3-1] is fixed on On [1-b] of kuppe side. The homalocephalus of connecting elbow [3-2] is by fishplate bar [3-3] Be fixed on the drip molding of driver's cabin. The fixing trip bolt [3-4] on the fishplate bar [3-1] Be fixedly connected respectively bend pipe [3-2] and support column [3-5], support column [3-5] and water conservancy diversion The cover skeleton is connected, and like this kuppe is fixedly mounted on driver's cabin [2] top. Connect curved The length of pipe [3-2] guarantee the assemblage gap between kuppe [1] and the driver's cabin be 15～20 millimeters.

The utility model does not break the former driving of ring on the basis that does not change the original design of vehicle The kuppe device is installed in the situation of cell structure, easy for installation, dependable performance. Reduced Pneumatic drag coefficient has reduced fuel consume, has improved the dynamic property of tack van Energy and economy.

Embodiment is as follows:

On a tack box-body truck operator's compartment, streamlined reefer housing is installed.With rectangular steel pipe or angle steel welding streamlined reefer housing skeleton and supporting.Iron sheet with 1 millimeters thick covers on skeleton, makes cover body.Or use glass-felt plastic, pre-buried skeleton is made streamlined reefer housing.The length and width size and the tack box-body truck operator's compartment of its bottom are complementary.The lower front of the longitudinal profile of windward side partly is a straight line, and its length accounts for 23% of whole windward side; Parabola is made on top, and parabola and straight line kissing connect.Its cross curvature is consistent with supporting operator's compartment front.Its center parts transversely section is a concave surface, and its concave surface accounts for 66% of whole horizontal section, recessed dark 18～25 millimeters of maximum recessed depths.In the two sides of streamlined reefer housing, be in that to have angle on the position that accounts for overall height 25% more than the bottom surface be 65 ° triangle gap, wedge angle partly connects with R50 garden arc kiss.Respectively install respectively in the streamlined reefer housing two sides 2 anchor fittings [3] with screw fixedly fishplate bar [3-1] be fixed on the side of streamlined reefer housing [1].The bridge piece [3-2] of fixedly packing in the hole of fishplate bar [3-1], fixedly fishplate bar [3-1] uses tightening screw [3-4] fastening respectively at the part of the streamlined reefer housing inner chamber support tube [3-5] of packing into.The homalocephalus part of four bridge pieces [3-2] is fixed on the drip rail [2-1] of automobile cab by fishplate bar [3-3] with screw.18 mm clearance are left with the operator's compartment top in the streamlined reefer housing bottom when being fixedly connected.

Install after the streamlined reefer housing at tack box-body truck operator's compartment top, makes the automobile pneumatic drag coefficient descend 21.76%; 8.5%, 70 kilometer/hour constant speed fuel consumption of 100km of 80 kilometers/hour constant speed fuel consumption ofs 100km decline descends 8.1%; Maximum speed improves 5.3%; The dynamic property and the economy of tack box-body truck have been improved greatly.

Claims

1, tack box-body truck streamlined reefer housing, by skeleton supporting and be fixed on the truck cab top, it is characterized in that streamlined reefer housing [1] integral body is fairing, the length of its bottom and the forward control cab [2] of width and box-body truck are complementary, the longitudinal profile of streamlined reefer housing [1] windward side is connect by straight line and curve kiss to be formed, its underpart leading edge is a straight line, upper curve is a parabola, the leading edge cross curvature of streamlined reefer housing [1] windward side is consistent with supporting operator's compartment front, its center parts transversely section is a concave surface, and it is flat to become gradually from bottom to top, and rear portion, two sides [1-b] has the triangle gap, by anchor fitting [3] streamlined reefer housing [1] is fixed on the operator's compartment top.

2, tack box-body truck streamlined reefer housing according to claim 1 is characterized in that above-mentioned windward side lower front part longitudinal profile is that the part of straight line accounts for 20%～25% of windward side longitudinal length.

3, tack box-body truck streamlined reefer housing according to claim 1, it is characterized in that said fixing device [3] is by fixedly fishplate bar [3-1], bridge piece [3-2], fishplate bar [3-3], tightening screw [3-4], connection support tube [3-5] constitute, fixedly fishplate bar [3-1] is fixed on the streamlined reefer housing side [1-b], the homalocephalus of bridge piece [3-2] is fixed on the drip rail [2-1] of operator's compartment by fishplate bar [3-3], tightening screw [3-4] be fixedly connected respectively bend pipe [3-2] and support tube [3-5] are fixedly mounted on streamlined reefer housing [1] operator's compartment [2] top like this.

4, according to claim 1 or 3 described tack box-body truck streamlined reefer housings, it is characterized in that the bottom surface of above-mentioned streamlined reefer housing [1] and the assemblage gap between the operator's compartment end face are 15～20 millimeters.