CN2398129Y

CN2398129Y - Large capacity plastic fuel tank

Info

Publication number: CN2398129Y
Application number: CN 99245103
Authority: CN
Inventors: 程启智; 黄捍伟; 刘汉桥
Original assignee: BALING ENGINEERING PLASTIC PRO
Current assignee: BALING ENGINEERING PLASTIC PRO
Priority date: 1999-10-12
Filing date: 1999-10-12
Publication date: 2000-09-27
Anticipated expiration: 2009-10-12

Abstract

The utility model provides a large-capacity plastic fuel tank. A reinforcing column which is connected with the wall of the fuel tank is arranged in the plastic fuel tank, and a mechanical firm component is adopted for connecting a fuel filling opening and the fuel tank. The large-capacity plastic fuel tank which is produced by the adoption of the before-mentioned measures solves the problems of easy expansion, invagination and poor accuracy, and retains the advantages of corrosion resistance, high cleanliness, good flame retardance, shock resistance, good safety performance, large capacity, light weight and long service life in a plastic fuel tank. The utility model also has the advantages of economy, practicality and non-complicated production technology, so the utility model accords with the requirements of industrialized process. The large-capacity plastic fuel tank is suitable for being used on middle-tonnage heavy trucks or motor coaches.

Description

A kind of big volume plastic fuel tank

The utility model relates to a kind of structure that is exclusively used in the Fuel Tank of vehicle, the big volume plastic fuel tank of especially a kind of suitable tonnage, heavy duty truck or motorcoach.

Usually the bigger fuel tank of volume that adopted such as tonnage, heavy duty truck and motorcoach is the metal fuel tank, with spray paint or technology such as plastic-blasting to carry out dressing of a surface anticorrosion.This metal fuel tank manufacturing process complexity, cycle are long; Quality is heavy, the profile dullness, and corrosion-vulnerable, the cleanliness level in the oil pocket is difficult to control, easily causes driving faults; The outside face ornament is easy to wear to come off, and the lead that uses in the production process can cause permanent pollution.By comparison, plastic fuel tank can be made various complex appearances, withstanding corrosion, cleanliness level height, good flame resistance, shock-resistant, safety performance good, and is in light weight, long service life.Plastic fuel tank is widely used on small passenger car, the utility van at present, replaces original metal fuel tank rapidly.After the blow molding of this little volume plastic fuel tank, mainly adopt thermofussion welding to realize assembling, and adopt metal ligatures to improve rigidity, the suitability for industrialized production difficulty is little.But distortion such as large-scale plastic fuel tank easily takes place that drum is opened, caved in blow-moulding process and use, then influence is installed in the accuracy of accurate annexes such as interior oil mass inductor of fuel tank and oil suction pipe, therefore can't be widely used in tonnage or heavy duty truck at present.

The purpose of this utility model provides a kind of big volume, and is in light weight, easily produces, and not yielding, adaptation is good, and is economical and practical, is mainly used in the big volume plastic fuel tank of tonnage, heavy duty truck or passenger vehicle.

The utility model is achieved through the following technical solutions: be provided with the reinforcing prop (2) that connects oil tank wall in plastic fuel tank (1) body; Oil filling port (3) adopts mechanically robust spare to connect with being connected of fuel tank.Reinforcing prop (2) can have a place or many places, is distributed in the interior optional position of fuel tank (1), can be circle, square or other arbitrary shapes.Oil filling port (2) be connected with the machine riveting of fuel tank can be threaded, mode such as riveted joint, various snap ring, grab connects.

The big volume plastic fuel tank of taking above measure to produce has solved easy expansion, has caved in and the size accuracy problem, the withstanding corrosion, cleanliness level height, the good flame resistance that have kept plastic fuel tank, shock-resistant, safety performance is good, volume is big, in light weight, the advantage of long service life, economical and practical, production technology is uncomplicated, meets industrial production requirement.Being fit to tonnage, heavy duty truck or motorcoach uses.

Elaborate below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural front view.

Fig. 2 is the A-A section-drawing of Fig. 1.

Fig. 3 is the B-B section-drawing of Fig. 1.

Fig. 4 is the D-D section-drawing of Fig. 1.

Fig. 5 is a kind of cross sectional shape scheme drawing of reinforcing prop.

Fig. 6 is a kind of cross sectional shape scheme drawing of reinforcing prop.

Fig. 7 is a kind of cross sectional shape scheme drawing of reinforcing prop.

Fig. 8 is a kind of cross sectional shape scheme drawing of reinforcing prop.

Fig. 9 is outer snap ring-type oil filling port locking mode structural representation.

Figure 10 is interior snap ring-type oil filling port locking mode structural representation.

Figure 11 is a side plug-in card type oil filling port locking mode structural representation.

Figure 12 compresses the mode structural representation for the oil filling port grab.

Figure 13 is an oil filling port screw lock mode structural representation.

Figure 14 is oil filling port riveted joint locking mode structural representation.

Figure 15 is an oil filling port negative thread connection mode structural representation.

Figure 16 is an oil filling port outside thread connection mode structural representation.

The utility model is to have done improvement on the basis of plastic fuel tank:

1, set up reinforcing prop (2) at the big the easiest generation bulging of volume plastic fuel tank (1), interior notch distortion place, see Fig. 1～8, solve expand, cave in, problem such as size accuracy.Plastic fuel tank and big volume hollow product are to adopt the blow molding process moulding.Blow molding is that high temperature plastics is passed through special plane, extrudes tubulose semi-molten parison, places blow mold, in pipe, feed pressurized air with its inflation, make it to be close on the die cavity wall, behind cooling forming, the demoulding obtains the hollow product with blow mold shape unanimity.The way that big volume plastic fuel tank is set up reinforcing prop is, when the design blow mold, respective design goes out the outstanding cylinder of reinforcing prop, and behind left side and the right-hand part blow mold matched moulds, G＜2 * H is satisfied in the gaps between the two outstanding cylinders.In implementing the blowing process, because of G＜2 * H, the system of parison wall thickness between the cylinder is at first pushed and is welded together.Parison feeds pressurized air, all the other not the preform blowup of welding be close to die cavity wall and cylinder wall, behind the cooling forming, have reinforcing prop (oil box that fuel tank body and reinforcing prop form a whole) in the plastic fuel tank body that the demoulding makes.Being provided with of reinforcing prop (2) can be adjusted its quantity, distributing position and shape as required.

2, oil filling port adopts the machine riveting connection mode with being connected of fuel tank;

The metal fuel tank is connected the employing welding manner with little volume plastic fuel tank oil filling port with the fuel tank body, technology is numerous and diverse, in case oil filling port generation quality problems, the fuel tank body is also scrapped thereupon.The weld seam that metal fuel tank welding oil filling port forms is that fuel tank is the most perishable, the weak link of cracking.Also be the major cause that causes oil pocket cleaning quality accident, potential driving hidden danger.

The utility model adopts the machine riveting connection structure, solves the problem that exists in the welding; Adaptation is good, assembles simple and easyly, has good interchangeability, and is economic, practical, meets the suitability for industrialized production requirement.Its mode has various ways, can adopt Figure 12 grab to compress mode, Fig. 9,10, the inside and outside locking mode of 11 various snap rings, Figure 13,14 planes compress adopts fuel tank body negative thread connecting mode among mode (screw or the mode of riveting tightly), Figure 15, also can adopt this extracorporeal thread of Figure 16 fuel tank connecting mode.(4) be oily sensor.

Claims

1, a kind of big volume plastic fuel tank, form by plastic fuel tank body (1), oil filling port (3), oil mass inductive means, oil suction parts, exhaust component, it is characterized in that: be provided with the reinforcing prop (2) that connects oil tank wall in the fuel oil casing (1), oil filling port (3) adopts machanical fastener to connect with being connected of fuel tank.

2, fuel tank according to claim 1 is characterized in that: reinforcing prop (2) can have a place or many places, is distributed in the interior optional position of fuel tank (1), can be circle, square or other arbitrary shapes.

3, fuel tank according to claim 1 is characterized in that: oil filling port (2) be connected with the machine riveting of fuel tank can be threaded, mode such as riveted joint, various snap ring, grab connects.