CN202171532U - Tire coupling stiffness testing machine - Google Patents

Abstract

The utility model relates to a tire stiffness testing device, specifically to a tire coupling stiffness testing machine, which comprises a vertical body, a vertical loading mechanism, a longitudinal loading mechanism, a sidewise loading mechanism, a torsional loading mechanism, a tire tilting locating mechanism, a six-component sensor, and a pedestal, wherein the vertical body and the pedestal form a machine body; the vertical loading mechanism is connected to the vertical body through a vertical guide rail; a three-way loading bench formed by the longitudinal loading mechanism, the sidewise loading mechanism, and the torsional loading mechanism is disposed on the pedestal; the six-component sensor is fixed to the vertical loading mechanism; and the tire tilting locating mechanism is connected with the six-component sensor. The tire coupling stiffness testing machine has a simple and reasonable structure and is capable of testing both vertical stiffness, longitudinal stiffness, sidewise stiffness and torsional stiffness of tires and stiffness of the tires under coupling load carrying.

Description

Tire coupling stiffness testing machine

technical field

The utility model relates to a tire stiffness testing device, specifically a tire coupling stiffness testing machine, which can not only test the vertical stiffness, longitudinal stiffness, lateral stiffness, and torsional stiffness of the tire under a single direction of force, but also can The stiffness characteristic of the test tire under coupled force is the coupling stiffness of the tire.

Background technique

Tire stiffness is an important part of the tire's mechanical properties, and the structural parameters and mechanical properties of the tire determine the main driving performance of the car. Tire stiffness testing machine is one of the key equipment for testing tire performance. It can test the stiffness of the tire in all directions under a single force: vertical stiffness, longitudinal stiffness, lateral stiffness, and torsional stiffness. It is an important data source for tire mechanical properties testing .

The current tire stiffness testing machine can only test the stiffness of the tire when it is loaded in a single direction by loading in a single direction, but cannot measure the stiffness of the tire when it is coupled. When the car is experiencing safety problems and many other states, the tires are in a coupled stress state, and there is no special equipment for testing the tire stiffness characteristics in this stress state at home and abroad.

Contents of the invention

The purpose of the utility model is to provide a tire coupling stiffness testing machine with simple and reasonable structure, which can not only test the vertical stiffness, longitudinal stiffness, lateral stiffness and torsional stiffness of the tire, but also test the stiffness of the tire under coupled force.

The purpose of this utility model is achieved in that the testing machine comprises a vertical trunk, a vertical loading mechanism, a longitudinal loading mechanism, a lateral loading mechanism, a torsional loading mechanism, a tire roll positioning mechanism, a six-component force sensor, a base, and The above-mentioned vertical torso and base constitute the body, the vertical loading mechanism is connected on the vertical torso through vertical guide rails, and the three-way loading platform composed of the longitudinal loading mechanism, the lateral loading mechanism and the torsional loading mechanism is arranged on the base The six-component force sensor is fixed on the vertical loading mechanism, and the tire roll positioning mechanism is connected with the six-component force sensor.

The utility model has the following advantages and positive effects:

1. The utility model has a simple and reasonable structure, and is a tire coupling stiffness testing machine capable of measuring the stiffness of the tire under coupling force. For example, to test the lateral stiffness of tires, different combinations of vertical loading, torsional loading, and longitudinal loading can be set, and then lateral loading is performed to test the lateral stiffness of the tire under coupled force.

2. The utility model can test the stiffness of the tire under coupling force, promote the development of domestic tire stiffness testing machines, and lay the foundation for the development of tire mechanics and automobile dynamics and the application of high-precision vehicle models in automobile development.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the tire coupling stiffness testing machine.

Fig. 2 is a schematic diagram of projection to A in Fig. 1 of the present utility model.

Fig. 3 is a schematic diagram of the projection of the B direction in Fig. 1 of the utility model.

Fig. 4 is a vertical loading mechanism and a roll positioning mechanism.

Figure 5 is a three-way loading table.

Detailed ways

Shown in accompanying drawing 1,2,3: this testing machine comprises vertical torso 1, vertical loading mechanism 2, longitudinal loading mechanism 3, lateral loading mechanism 4, torsional loading mechanism 5, tire roll positioning mechanism 6, six points The force sensor 7, the base 8, the vertical torso 1 and the base 8 constitute the body, the vertical loading mechanism 2 is connected to the vertical torso 1 through the vertical guide rail 12, the longitudinal loading mechanism 3, and the lateral loading mechanism 4 The three-way loading table formed jointly with the torsion loading mechanism 5 is set on the base 8, the six-component force sensor 7 is fixed on the vertical loading mechanism 2 through the transition plate 13, and the tire roll positioning mechanism 6 is connected to the six-point force sensor through the connecting piece 15. The force sensor 7 is connected.

The vertical torso 1 is provided with grooves for placing guide rails 12, above which is the fixed end 28 of the servo motor.

Shown in accompanying drawing 4: described vertical loading mechanism 2 comprises the first servo motor 9 that is fixed on the vertical trunk 1, connects the side plate 11 of servo motor 9 by shaft 10, is arranged on the side plate 11 for The vertical guide rail groove 12-1 connected with the vertical guide rail 12, the side plate 11 is a side plate with a linear displacement sensor.

The tire roll positioning mechanism 6 includes a roll shaft 18 with an inclination sensor 17 on it, a fixed shaft connected to the roll shaft 18 and an expansion sleeve 16, a connecting piece 15 connecting the fixed shaft and the expansion sleeve 16, Loosen the expansion sleeve 16 to adjust the angle of the roll axis 18 relative to the connecting piece 15 (to form the tire roll angle). The member 15 is connected to the six-component force sensor 7 through the second transition plate 14 .

The tire adapter 30 suitable for installing different types and types of tires is arranged on the roll axis 18 .

As shown in accompanying drawing 5: the described three-way loading table composed of the longitudinal loading mechanism 3, the lateral loading mechanism 4 and the torsion loading mechanism 5 includes a bottom plate 19 fixed on the base 2, connected to the The longitudinal base plate 20 on the base plate 19, the longitudinal base plate 20 is a longitudinal base plate with a linear displacement sensor, and is connected to the lateral base plate 21 on the longitudinal base plate 20 through a lateral guide rail 24, and the lateral base plate 21 is a linear displacement sensor. The lateral bottom plate of the displacement sensor, the turntable bearing 23 fixed on the bottom plate 21, the torsion bottom plate 22 fixed on the turntable bearing 23, the bottom plate 19, the side guide rails 24 and the longitudinal guide rails 27 can slide relative to each other. The servo motor 25 and the third servo motor 26 are respectively fixed on the base plate 19 and the longitudinal base plate 20 to push the base plate to move, and the turntable bearing 23 is a turntable bearing with an angular displacement sensor.

3M sandpaper (29) is arranged on the torsion bottom plate (22) to increase the adhesion coefficient between the tire and the three-way loading platform.

working principle:

The six-component force sensor 7 can accurately measure the force in all directions of the tire. The vertical loading mechanism 2 and the three-way loading platform composed of the longitudinal loading mechanism 3, the lateral loading mechanism 4 and the torsional loading mechanism 5 pass through the servo motor 9, 25 and 26 load the tire, and the displacement of the tire in all directions can be accurately measured through the sensor, so that the stiffness of the tire under coupling force can be measured.

Claims (7)

1. tire coupling stiffness testing machine, it is characterized in that: this testing machine comprises vertical trunk (1), vertical loading mechanism (2); Vertical load maintainer (3), side direction load maintainer (4) reverses load maintainer (5); Tire inclination detent mechanism (6), six-component sensor (7), pedestal (8); Described vertical trunk (1) and pedestal (8) constitute body; Vertically load maintainer (2) is connected on the vertical trunk (1) through upright guide rail (12), vertical load maintainer (3), side direction load maintainer (4) with reverse load maintainer (5) jointly the three-dimensional loading bench of formation be arranged on the pedestal (8); Six-component sensor (7) is fixed on the vertical load maintainer (2), and tire inclination detent mechanism (6) links to each other with six-component sensor (7).

2. a kind of tire coupling stiffness testing machine according to claim 1 is characterized in that: described vertical trunk (1) is provided with groove and places guide rail (12), and the top is the stiff end (28) of servomotor.

3. a kind of tire coupling stiffness testing machine according to claim 1; It is characterized in that: described vertical loading mechanism (2) comprises first servomotor (9) that is fixed on the vertical trunk (1); The side plate (11) that connects servomotor (9) through axle (10); Be arranged on the upright guide rail groove (12-1) that being used on the side plate (11) connects upright guide rail (12), said side plate (11) is the side plate that has linear displacement transducer.

4. a kind of tire coupling stiffness testing machine according to claim 1; It is characterized in that: described by vertical load maintainer (3); Side direction load maintainer (4) and reverse the common three-dimensional loading bench that constitutes of load maintainer (5) and comprise the base plate (19) that is fixed on the pedestal (2); Be connected in the vertical base plate (20) on the base plate (19) through longitudinal rail (27); Be connected in the side direction base plate (21) on vertical base plate (20) through side guide (24); Be fixed in the turntable bearing (23) on the base plate (21), be fixed in and reverse base plate (22) on the turntable bearing (23), described base plate (19), side guide (24) and longitudinal rail (27) can slide in twos relatively; Second servomotor (25) and the 3rd servomotor (26) are individually fixed in base plate (19) and vertical base plate (20) is gone up moving of promotion base plate; Said vertical base plate 20 is the vertical base plates that have linear displacement transducer, and said side direction base plate (21) is the side direction base plate that has linear displacement transducer, and described turntable bearing (23) is for having the turntable bearing of angular displacement sensor.

5. a kind of tire coupling stiffness testing machine according to claim 1; It is characterized in that: described tire inclination detent mechanism (6) comprises the roll axis (18) that has obliquity sensor (17) on it; Be connected in stationary shaft and expansion set (16) on the roll axis (18); Connect the web member (15) of stationary shaft and expansion set (16), web member (15) is connected in six-component sensor (7) through second rebound (14).

6. a kind of tire coupling stiffness testing machine according to claim 4 is characterized in that: the described base plate (22) that reverses is provided with 3M sand paper (29).

7. a kind of tire coupling stiffness testing machine according to claim 4, it is characterized in that: described roll axis (18) is provided with tire adapter (30).

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