Wheelchair pendulum impact strength testing machine

Wheelchair pendulum impact strength testing machine WSD-8423

Scope of application: Used to determine the impact resistance of some parts of the wheelchair that affect safety. It can be used for quick quality control tests to determine whether a handicap vehicle meets the impact strength requirements of the required standards, and to compare material toughness tests.

Test method: Clamp the sample in the impact testing machine, the notched side faces the edge of the pendulum, release the pendulum, make it impact the sample, and judge whether the tested object meets the test requirements according to the standard.

2. Design basis: ISO 7176-8, GB/T 18029.8

Impact strength test:

1). Backrest impact strength test:

The pendulum swings at a vertical Angle of 30°±2°

2). Bracelet impact strength test:

It is suitable for manual wheelchairs that are driven by the user with a ring bracelet mounted on the wheel.

a. Pendulum and vertical Angle 45°±2° swing impact

b. The hand ring is connected to the wheel steel of the wheel as a whole. The pendulum swings every 90°±2° to impact one

3). Caster impact strength test:

a. Pendulum and vertical Angle to θ°+3° swing impact, according to the formula

Cosine theta equals 1

Md+Mw

377

In the formula: θ -- the swinging Angle unit of the pendulum: degree

; Md -- test dummy mass unit: kg;

Mw - Mass unit of wheelchair: kg.

4). Foot support, longitudinal impact strength test:

①. Suitable for wheelchairs whose foot supports may contact obstacles.

(2) If the test chair is equipped with a separate footrest, perform two tests on one footrest.

3. If the test chair is equipped with an integrated foot rest, perform both tests on the same side of the foot rest.

④. Pendulum and vertical Angle into θ°+3° swing impact, according to the formula calculation

Cosine theta equals 1

Md+Mw

377

Shizhong

: θ - pendulum swing Angle unit: degree;

Md -- test dummy mass unit: kg;

Mw - Mass unit of wheelchair: kg.

4). Front frame impact strength test:

1. Suitable for test wheelchairs in addition to small casters, wheels or foot supports that may contact obstacles in the front frame, especially electric scooters are often used as the front structure of the door.

②. Positive impact (electric scooter) :

a. Pendulum and vertical Angle to θ°+3° swing impact, according to the formula

Cosine theta equals 1

Md+Mw

377

Formula: θ -- pendulum swing Angle unit: degree;

Md -- test dummy mass unit: kg;

Mw - Mass unit of wheelchair: kg.

③. Oblique impact (electric scooter) :

a. Determine an "impact point" on one side of the front frame, through which the plane (section) is at an Angle of 70º±5º with the center line of the wheelchair (electric scooter)

b. Pendulum and vertical Angle to θ°+3° swing impact, according to the formula calculation

Cosine theta equals 1

Md+Mw

377

Shizhong

θ - pendulum swing Angle unit: degree;

Md -- test dummy mass unit: kg;

Mw - Mass unit of wheelchair: kg.

Three. Pendulum parameters:

Caster and foot support impact test pendulum:

a) Total mass: 10kg±0.25kg;

b) The distance from the center of the rotating shaft to the center of impact is 1000mm±2mm;

c) Shape and mass distribution is calculated by the following formula:

d=I/mrG+rG

Formula:

I Rotary penetration unit of the pendulum around the rotating shaft: kg/㎡;

rG The unit of distance between the rotating shaft and the center of gravity of the pendulum: m;

d Distance from the rotating shaft to the impact center unit: m;

m Weight unit of the pendulum: kg.

Bracelet impact test pendulum:

a) Total mass: 10kg±0.25kg;

b) The distance from the center of the rotating shaft to the center of impact is: 1000mm±1mm;

c) Impact hammer dimensions: 150±1×40 MM

Backrest impact test pendulum:

a) Total weight: 25kg±0.5kg;

b) Pendulum: 5# football (standard game ball), with φ3.5±1 lead shot and high-density closed cell foam material

c) Density: 75±15kg/M3 ISO 845

d) Hardness: 325N±60N ISO 2439

e) Roundness: ±20mm

Iv. Technical parameters:

1 Control mode: PLC and touch screen control

2 Display mode: full color LCD touch screen

3 Backrest impact test pendulum:

a) Total weight: 25kg±0.5kg;

b) Pendulum: 5# football (standard game ball), with φ3.5±1 lead shot and high-density closed cell foam material

c) Density: 75±15kg/M3 ISO 845

d) Hardness: 325N±60N ISO 2439

e) Roundness: ±20mm

4 Swing impact Angle: 0-100 ° can be set

5 Pendulum lifting mode: electric automatic lifting

6 Pendulum impact mode: one-click manual control

7 Safety protection: double safety protection to prevent accidental injury

8 Swing beam movement mode: electric left and right movement and electric up and down movement

9 Effective width of gantry frame: 800MM

10 Wheelchair fixation: manual quick clamping

11 Test dummy: 25kg----100kg adjustable

12 cylinders and other pneumatic components brand: AirTAC

13 Air source: Pressure 0.7MPa

14 Power supply: three-phase 380V 2KW

15 Machine dimensions 200×180×280(W×D×H) CM

16 The main body of the machine is shaped steel component, high strength, not easy to deformation.

17 The base of the machine is solid steel with good stability, equipped with reinforcing bars and flat feet for water transfer.

18 Machine appearance Electrostatic spraying, other parts electroplating treatment, high rust prevention ability, beautiful appearance.