CN101303275A

CN101303275A - Material sampler for detecting acoustical material

Info

Publication number: CN101303275A
Application number: CNA2008100699097A
Authority: CN
Inventors: 李传兵; 靳红英; 刘宏玉; 亢潘
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2008-06-30
Filing date: 2008-06-30
Publication date: 2008-11-12

Abstract

The invention relates to a material sampler for acoustic material detection, which is composed of a stander, a hydraulic jack, a guide pillar, a balancing plate, a spring, a cutting tool and a backing plate. The guide pillar is vertically and fixedly connected between the upper nog and the lower nog of the stander; the balancing plate is sleeved on the guide pillar; the spring is arranged on the guide pillar under the balancing plate; the hydraulic jack is fixedly arranged on the upper nog, the lower end of the jack being pressed on the balancing plate; the cutting tool, which is tubular, is connected under the balancing plate, the inner diameter of the cutting tool being equal to the inner diameter of the impedance tube of the material to be measured; and the backing plate is arranged on the lower nog. The material sampler can insure the conformity of the inner diameter of the material sample piece and the inner diameter of the impedance tube, the smoothness of the section and the conformity of the sample pieces so as to insure the accuracy of the detection for the performance parameters of the material, thereby reducing test cost and shortening time on testing.

Description

Be used for the material sampler that acoustical material detects

Technical field

The present invention relates to material acoustics performance test field, be specifically related to the material sampler.

Background technology

Along with the continuous development of Hyundai Motor technology, the vibration noise performance of automobile has become one of important performance indexes of automobile.The use of acoustical material and material be one of principal element that influences internal car noise size and sound quality every sound absorbing capabilities.When using the impedance tube method to carry out the acoustics parameters test of material, different impedance calibers requires different material exemplar diameters, the planarization of the internal diameter size of sampling material and material sampling section directly influences the accuracy of material acoustics parameter testing, and manual sampling is difficult to guarantee material exemplar material sample footpath and the consistance of impedance tube internal diameter and the planarization of section.

Summary of the invention

Purpose of the present invention proposes a kind of material sampler that acoustical material detects that is used for, and guarantees that material exemplar diameter is consistent with the impedance tube internal diameter, the planarization of section, and the consistance of assurance exemplar, with the accuracy that guarantees that material property parameter is tested, thereby reduce experimentation cost, shorten test period.

The technical solution used in the present invention is as follows:

A kind of material sampler that is used for the acoustical material detection, it is made up of frame, hydraulic jack, guide pillar, balance plate, spring, cutter and backing plate; Described frame is the framed structure that upper and lower spreader and left and right pillar constitute, the guide pillar vertical fixing is connected between the upper and lower spreader, on the balance plate suit guide pillar, on the guide pillar below the balance plate spring is installed, the hydraulic jack stationary installation is on last spreader, and the lower end is against the balance plate top, and cutter is by being threaded in the balance plate below, pallet device is on following spreader, and is corresponding with the tool position; Described cutter is tubular, and its internal diameter is identical with the impedance tube internal diameter of test material.

Carry out material when sampling, material is placed on the backing plate, hydraulic jack work promotes the balance plate motion, and balance plate moves downward along guide pillar, moves downward material is cut off thereby drive cutter.

The utility model is simple in structure, and is easy to operate, can guarantee the consistance of material exemplar, and can be applicable to the not sampling of same piece.

Description of drawings

Fig. 1 is a material sampler front view;

Fig. 2 is a material sampler vertical view;

Fig. 3 is a material sampler A-A sectional view;

Fig. 4 is the balance plate structural representation;

Fig. 5 is a balance plate B-B sectional view.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the material sampler is made up of frame 7, hydraulic jack 1, guide pillar 2, balance plate 3, spring 4, cutter 5 and backing plate 6.Frame: by spreader and left and right pillar constitute up and down.Frame 7 is the framed structure that upper and

lower spreader

71,72 and left and

right pillar

73,74 constitute, and two guide pillar 2 vertical fixing are connected between upper and

lower spreader

71 and 72, is used to guide the balance plate motion, and the guide pillar surface accuracy is had relatively high expectations.Balance plate 3 is led and is contained on the guide pillar 2, sees Fig. 3 and Fig. 4, has inlayed a bolt in the middle of balance plate, be used to connect cutter 5, the balance plate two ends are thicker, are convenient to like this guarantee that balance plate is horizontal at the volley, and the through-hole inner surface accuracy requirement of balance plate two ends is higher.On the following guide pillar of balance plate spring 4 is installed, spring 4 can balance support plate 3, controls the motion of balance plate 3 simultaneously, needs to consider the route problem of spring in the design, the position that guarantees to allow balance plate move to material is cut off.Hydraulic jack 1 stationary installation is on last spreader 71, and the lower end is pressed in balance plate 3 tops, and hydraulic jack adopts existing hydraulic jack, lifting jack load-carrying 10t, minimum altitude 200mm, lifting altitude 120mm.Backing plate 6 devices are on following spreader 72.Cutter 5 is tubular, and its internal diameter is identical with the impedance tube internal diameter of test material, and multiple model can be arranged, and as internal diameter 100mm and 29mm, mainly is to require exemplar internal diameter parameter setting according to the impedance tube of being bought.In addition, for further guaranteeing material when sampling, frame can be reliable and stable, can also bearing 8 be set in frame lower.

During use, material is placed on the backing plate 6, hydraulic jack 1 work promotes balance plate 3 motions, and balance plate 3 moves downward along guide pillar 2, moves downward material is cut off thereby drive cutter 5.

Claims

1, a kind of material sampler that is used for the acoustical material detection, it is characterized in that: it is made up of frame, hydraulic jack, guide pillar, balance plate, spring, cutter and backing plate; Described frame is the framed structure that upper and lower spreader and left and right pillar constitute, the guide pillar vertical fixing is connected between the upper and lower spreader, on the balance plate suit guide pillar, on the guide pillar below the balance plate spring is installed, the hydraulic jack stationary installation is on last spreader, and the lower end is pressed in the balance plate top, and cutter is connected the balance plate below, pallet device is on following spreader, and is corresponding with the tool position; Described cutter is tubular, and its internal diameter is identical with the impedance tube internal diameter of test material.