KR20050001728A - Mounting tester of cab suspension for vehicle - Google Patents

Abstract

PURPOSE: A testing machine for a cab suspension mounting part of a freight vehicle is provided to measure accurately the wear of inner and outer cases combined with a hinge shaft and to secure a precise design value of an actual vehicle by applying power of a condition same as an actual vehicle traveling to the hinge shaft at a frame and suspension mounting part comprising the actual vehicle. CONSTITUTION: A testing machine for a cab suspension mounting part of a freight vehicle is composed of a hinge bracket(1) positioned higher than a rear side of a frame and a suspension mounting part(A) of an actual vehicle; a plate(2) installed to rotate about the hinge bracket and closely contacted with the suspension mounting part at the bottom side of one end to generate rotary power at a hinge shaft in rotating the plate; a weight material(3) installed in the rear end of the plate to have weight same as a cab to be tested; and a cylinder(4) disposed at the front end of the plate symmetrically to the weight material to rotate the plate.

Description

Mounting tester of cab suspension for vehicle

The present invention relates to a cab suspension mounting tester for a lorry, and more specifically, to measure the noise generated in the vehicle by measuring in advance the wear and tear of the cab mounting part due to acceleration and deceleration during operation of a cab-mounted lorry. A van suspension mounting tester for vans that allows for improvement.

In general, the van is made up of a cap in which a driver's seat, an engine, etc. are disposed, a storage box connected to the cap and configured to load a cargo, and a frame installed to support the cap and the storage box.

The cap is provided with a hinge shaft to be opened for maintenance of the engine as well as suspension mounting to improve ride comfort, the hinge shaft in front of the frame is installed as shown in FIG. .

This is done by inserting a cushion (CU) wrapped outside with the inner case (I) and the outer case (O) to the hinge bracket formed on the frame, and by connecting a cap to the outside of the cushion (CU).

Here, the hinge shaft (S) of the cap is subjected to torsional or rotational motion during acceleration and deceleration of the vehicle, the friction and wear occurs in the inner and outer cases (I, O).

When wear occurs in the inner and outer cases (I, O), play occurs after a predetermined time, and thus there is a problem in that a shock sound occurs while driving the vehicle.

However, as described above, it is only possible to know that wear occurs on the suspension hinge mounter portion of the cab and thus the impact sound occurs while driving the vehicle. It becomes difficult, and there is a problem that it is difficult to substantially reduce the impact sound generation due to wear in the cap suspension mounter.

In addition, since each component of the suspension mounting is not tested at a time, there is a problem in that test reliability is lowered and a test period is long.

Accordingly, an object of the present invention is to solve the above problems, to impose the same conditions as applied to the actual vehicle without applying the cap suspension mounter to the actual vehicle, and to apply the twist and rotation force of the cap hinge portion, which is a condition at the time of driving the cap The present invention provides a cap suspension mounting tester for a van that measures the wear of the hinge and thus generates the impact sound, thereby optimizing the design value of the cap suspension mounter.

In order to achieve the above object, the present invention, the hinge bracket is installed so as to be positioned higher than this in the rear position of the frame and the suspension mounting portion of the vehicle, and is installed to enable the rotational movement around the hinge bracket as described above and the suspension mounting on one end The plate is in close contact with the plate so that the rotational force is generated in the hinge shaft portion when the plate rotates, the heavy material which is installed at the rear end of the plate and has the same weight as the weight of the cap to be tested, and the tip of the plate which is symmetrical with the weight It is characterized in that consisting of a cylinder configured to be installed in the rotational movement of the plate.

1 is a schematic perspective view illustrating the concept of a cap suspension mounting tester for a van according to the present invention;

Figure 2 is a detailed view of the main part of Figure 1;

Figure 3 is a cross-sectional view showing a cap hinge for installing a cap in a typical van.

* Explanation of symbols for the main parts of the drawings

1: hinge bracket 2: plate

3: heavy weight 4: cylinder

5: shock absorber S: hinge shaft

A: frame and suspension mounting part I: inner case

O: outer case

1 and 2 is a schematic and partial enlarged view showing a cap suspension mounting tester for a lorry according to the present invention, in the state in which only the frame and the suspension mounting part A of the actual vehicle are installed at the test site, the suspension mounting part described above. The hinge bracket 1 is installed to be positioned higher than this in the rear position of (A), and the plate 2 is installed to enable rotational movement about the hinge bracket 1 described above. At the rear end, a weight 3 equal to the weight of the cap is disposed, and at the front end, a cylinder 4 capable of rotating the plate 2 is provided.

In addition, the cap suspension mounting portion is in close contact with the lower side of the cylinder 4 of the plate 2, so that the same torsional and rotational force as the actual vehicle is applied to the hinge shaft of the cap suspension mounting portion when the cylinder 4 is operated. will be.

In particular, the heavy material 3 installed at the rear end of the plate 2 is matched with the weight when the plate 2 performs the actual vehicle motion by the cylinder 4, so that the hinge shaft has the same size as the actual vehicle. Torsion and rotational force can be applied.

Of course, the cylinder 4 has a capacity to apply a predetermined force to the hinge shaft (S) while overcoming the weight of the weight (3) and the plate (2).

Referring to the effects of the present invention as described above, in order to test the wear of the cap suspension mounting in the state in which the tester is installed, the weight 3 such as the weight of the cap of the vehicle to be tested is seated on the plate 2. Let's go.

When the heavy material 3 is seated, the cylinder 4 is operated. The operation of the cylinder 4 is repeatedly operated, thereby generating the acceleration and deceleration of the hinge shaft S. Repetitive torsional and rotational forces are applied.

That is, in the vehicle acceleration, the hinge shaft S receives a force to rotate backwards, and when decelerated, a force to rotate forwards is reproduced by repeatedly operating the cylinder 4.

After repeatedly operating the cylinder 4 for a predetermined time, the hinge shaft (S) is removed to measure the wear and play between the outer case (O) and the inner case (I).

Since the degree of wear of the outer case O and the inner case I is generated under the same conditions as in the actual vehicle travel, it can be regarded as the same as the wear in the actual vehicle.

As described above, if the degree of wear in the outer and inner cases (O, I) is measured, the design value may be changed to reduce wear for each part.

In addition, after measuring the wear degree and play, the sound wave of approximately 1 ~ 10 kHz frequency is applied to the suspension mounting to measure the impact sound generation.

Here, the components such as shock absorber 5, spring (not shown) constituting the suspension mounting is repeated by the repetitive movement of the cylinder 4, the same movement as the actual vehicle driving bar, each of the components Their endurance life can also be measured at the same time, greatly reducing the test period.

In particular, by testing each of the above components at the same time, the test under the same conditions, the test reliability is further improved.

As described above, the present invention can precisely measure the wear of the inner and outer cases coupled to the hinge shaft by applying a force to the hinge shaft in the frame and suspension mounting of the vehicle, through the cylinder, under the same conditions as when the vehicle is driven. This has the advantage that the actual vehicle design value can be more precise.

In addition, the simultaneous measurement of each part of the suspension mounting has the advantage of improving measurement reliability and shortening the test period.

Claims (1)

The hinge bracket is installed so as to be positioned higher than the rear frame and the suspension mounting portion of the vehicle, and the hinge bracket is installed to be rotatable about the hinge bracket. And a weight that is installed at the rear end of the plate and having the same weight as the weight of the cap to be tested, and is installed at the tip of the plate which is symmetrical with the weight and configured to rotate the plate. Cap suspension mounting tester for a van, characterized by consisting of a cylinder.