CN201628610U

CN201628610U - Air-tightness detecting device for steel wheel rim of passenger car

Info

Publication number: CN201628610U
Application number: CN2009202087305U
Authority: CN
Inventors: 张义庆; 陈志豪; 朱森林; 钱国明; 陈川; 沈宝华; 段仁刚
Original assignee: SHANGHAI BAOSTEEL WHEEL CO Ltd
Current assignee: SHANGHAI BAOSTEEL WHEEL CO Ltd
Priority date: 2009-08-31
Filing date: 2009-08-31
Publication date: 2010-11-10
Anticipated expiration: 2019-08-31

Abstract

The utility model relates to an air-tightness detecting device for a steel wheel rim of a passenger car, which comprises an upper workbench, a lower workbench, a hydraulic cylinder, two guide poles, an upper die holder, an upper die and a lower die, wherein the upper and the lower workbenches are connected through four upright posts, and a spatial region for air-tightness detection is formed between the upper workbench and the lower workbench; a guide hole and a piston hole are arranged in the upper workbench; the hydraulic cylinder is connected on the upper workbench, and a piston is arranged in the hydraulic cylinder; the two guide poles penetrate through the guide hole of the workbench, the two guide poles play a guiding role, and also play roles of keeping balance and stability during the compression process; the upper die holder is connected with the two guide poles and the lower end of a piston rod and moves up and down along with the piston rod; the upper die is connected with the upper die holder through a bolt; the lower die is arranged on the lower workbench, and an air channel and an air inlet hole and an air outlet hole which correspond to the air channel are arranged in the lower die; and the upper die and the lower die are matched with the rim for forming a sealed cavity for air-tightness detection. The air-tightness detection device can conveniently and quickly detect whether cracks exist at the welded positions of the rim or not, so as to ensure good air-tightness of a wheel and further reduce the generation of air leakage of the wheel.

Description

Passenger car steel wheel rim air-tightness detection device

Technical field

The utility model belongs to the technical field that impermeability detects, particularly passenger car steel wheel rim air-tightness detection device.

Background technology

The rim for automobile wheel impermeability is the key that ensures the automotive safety operation, and it is to guarantee the good important step of rim for automobile wheel impermeability that impermeability detects.

Steel wheel rim is in process, original material is a plate, after rolling up circle, butt welding, scraping the slag three process, may produce defective at wheel rim weld seam position, as fine crack, bubble etc., after through operations such as follow-up contour roll forming, expansions, wheel rim has produced than large plastometric set, and these defectives develop into the crack of penetration type easily.Passenger car generally adopts inner tube-free wheel, and rim for automobile wheel directly cooperates with tire, and this requires wheel rim to have good sealing property, if the crack of this penetration type exists, will produce gas leak phenomenon after the wheel inflation so.If the crack is smaller, when examining eventually, be not easy to be found, wheel will flow into the client there.In recent years, the client's complaint that produces because of wheel gas leakage remains high always.

Summary of the invention

The purpose of this utility model is to provide a kind of passenger car steel wheel rim air-tightness detection device, and whether have crack exist, good with the impermeability that guarantees wheel if detecting the wheel rim commissure quickly and easily, produces to reduce wheel gas leakage.

For achieving the above object, the technical solution of the utility model is,

Passenger car steel wheel rim air-tightness detection device, it comprises, upper and lower worktable connects by 4 root posts, forms one between the upper and lower worktable and is used for the area of space that impermeability detects; Have pilot hole and piston hole on the upper table; Hydraulic cylinder is connected on the upper table, and its piston is arranged in the hydraulic cylinder; Two guide pillars pass the pilot hole of worktable, and two guide pillars play the guiding role, and play the effect that keeps balance and stability in compaction process; Upper bolster is connected in two guide pillars and piston-rod lower end, moves up and down with piston rod; Patrix is connected by bolt with upper bolster; Counterdie is arranged on the lower table, and its inside offers gas passage and reaches accordingly into and out of pore; Upper and lower mould cooperates formation one can detect the annular seal space of usefulness for impermeability with wheel rim.

The beneficial effects of the utility model

1. device structure, principle are simple; Operate directly perceived, simple; Cost is low, and is easy to use.

2. equipment interoperability is strong.By adjusting the die size size, the impermeability that can finish from 13 inches to 18 inches steel wheel rims detects.And as long as the size dimension of wheel rim is the same, the mould between them is general.

3. in the practical operation, after wheel rim, upper and lower mould form confined space, charge into pressurized air in it, at this moment gaseous tension size, dwell time, piston rod return interval all is adjustable, can be optimized each top parameter according to concrete different product.

4. guide pole location makes wheel rim not put under the positive situation, and also adjusting position is automatically finished respective detection and moved.

Description of drawings

Fig. 1 is the structural representation of the utility model air-tightness detection device.

Embodiment

Referring to Fig. 1, passenger car steel wheel rim air-tightness detection device of the present utility model, it comprises, upper and lower worktable 1,2 connects by 4 root posts 3, forms one between the upper and lower worktable 1,2 and is used for the area of space that impermeability detects; Have pilot hole 11 and piston hole 12 on the upper table 1; Hydraulic cylinder 4 is connected on the upper table 1, and its piston rod 41 passes piston hole 12 and is arranged at hydraulic cylinder 4; Two guide pillars 5 pass pilot hole 11 and lead; Upper bolster 6 is connected in two guide pillars 5 and piston rod 41 lower ends, moves up and down with piston rod 41; Patrix 7 is connected by bolt with upper bolster 6; Counterdie 8 is arranged on the lower table 2, and its inside offers gas passage 81 and reaches accordingly into and out of pore 82; Upper and

lower mould

7,8 cooperates formation one can detect the annular seal space 10 of usefulness for impermeability with wheel rim 9.

When impermeability detects, wheel rim 9 is placed on the counterdie 8, starts device; Hydraulic cylinder 4 starts, and control piston is descending, and patrix 7 touches wheel rim 9 and compresses, and after reaching certain pressure, piston stops descending.

Begin to charge into pressurized air this moment in annular seal space 10, after reaching certain pressure intensity in the annular seal space 10, stops inflation, enters the dwell time.

In pressure maintaining period, be coated with in the commissure or spray suds with brush or sprayer.Whether observe the commissure has bubble to produce.Produce if any bubble, wheel rim gas leakage is described, this wheel rim is a unacceptable product; Otherwise, illustrate that the wheel rim impermeability is good.

After dwell time finishes, emit the pressurized air in the annular seal space 10, the interior pressure of annular seal space is reduced rapidly.

After pressure was reduced to setting in the annular seal space 10, hydraulic cylinder 4 drove upstroke, takes off wheel rim then.

The utility model is simple in structure, and running cost is low; Highly versatile as long as adjust mould, can be easily detects the impermeability of 13～18 inches steel wheel rims; The adjustable of pressure, dwell time, return interval makes simple operation, simple.

Claims

1. passenger car steel wheel rim air-tightness detection device is characterized in that, comprise,

Upper and lower worktable connects by 4 root posts, forms one between the upper and lower worktable and is used for the area of space that impermeability detects; Have pilot hole and piston hole on the upper table;

Hydraulic cylinder is connected on the upper table, and its piston is arranged in the hydraulic cylinder;

Two guide pillars pass the pilot hole of worktable;

Upper bolster is connected in two guide pillars and piston-rod lower end, moves up and down with piston rod;

Patrix is connected by bolt with upper bolster;

Counterdie is arranged on the lower table, and its inside offers gas passage and reaches accordingly into and out of pore;

Upper and lower mould cooperates formation one can detect the annular seal space of usefulness for impermeability with wheel rim.