A polyurethane wheel testing machine

Abstract

The utility model discloses a kind of polyurethane wheel testing machines, including rack, the front and rear ends of the lower part of the rack are equipped with corresponding two pairs of sprocket, the two pairs of sprocket are connected by two chains, and the outer side of the chain is installed with several supporting plates along the circumference;Further including the driving device of driving sprocket rotation.The upper side of the supporting plate is equipped with several mounting frames for installing wheels, a pressure sensor is equipped on each mounting frame, and the upper side of the rack is equipped with several telescopic devices for controlling the lifting of several mounting frames, the friction between the supporting plate and wheel simulates the friction between wheel and ground, the different rotating speeds of wheel are realized by adjusting the moving speed of supporting plate, different test requirements are realized, and the detection result is more real and accurate.

Description

Technical Field

[0001] This utility model relates to the technical field of tire testing equipment, specifically to a polyurethane wheel testing machine. Background Technology

[0002] Polyurethane tires are increasingly replacing rubber tires in transportation vehicles due to their advantages such as being maintenance-free and pollution-free. Static pressure deformation and wear resistance are important parameters for judging the quality of polyurethane tires.

[0003] Existing polyurethane wheel testing machines include rotary and roller types. Rotary machines place the wheel on a rotating turntable for testing. However, this measurement method suffers from torsion caused by the different linear speeds of the inner and outer rings of the wheel, resulting in excessive wear or cracking on one side of the inner ring, far exceeding normal usage and leading to inaccurate test results. Roller machines test by rolling the wheel against a roller, but this measurement method suffers from relatively small contact area compared to the ground, resulting in lower heat generation and less accurate measurement of deformation. Therefore, a polyurethane wheel testing machine is proposed that can simulate the friction between the wheel and the ground, making the test results more realistic and accurate. Utility Model Content

[0004] The purpose of this invention is to provide a polyurethane wheel testing machine that can simulate the friction between a wheel and the ground, resulting in more realistic and accurate test results.

[0005] To solve the above technical problems, this utility model adopts the following technical solution: a polyurethane wheel testing machine, including a frame, with two pairs of sprockets corresponding to each other at both the front and rear ends of the frame. The two pairs of sprockets are connected front and rear by two chains, and several support plates are installed circumferentially on the outer side of the chains. It also includes a drive device for driving the sprockets to rotate. Several mounting brackets for mounting wheels are provided above the support plates, and each mounting bracket is equipped with a pressure sensor. Several telescopic devices for controlling the lifting and lowering of the mounting brackets are provided above the frame.

[0006] Using the above technical solution, during testing, the wheel is rotatably mounted on the mounting frame. The mounting frame is lowered by a telescopic device, causing the bottom of the wheel to contact the pallet. At this point, the pressure sensor contacts the pallet and outputs the detected pressure value. Then, the drive device is activated to rotate the sprocket, which in turn rotates the chain, causing multiple moving pallets to shift. The friction between the pallet and the wheel simulates the friction between the wheel and the ground. By adjusting the moving speed of the pallet, different wheel speeds can be achieved to meet different testing requirements, resulting in more realistic and accurate test results.

[0007] As a further optimization of this utility model, the mounting bracket is a pair of mounting plates, and the pair of mounting plates are provided with a pair of horizontally aligned mounting holes. During installation, the rotation shaft of the wheel is rotatably connected to the pair of mounting holes.

[0008] As a further optimization of this utility model, the chain includes several chain links, the side wall of each chain link is provided with a connecting plate, the connecting plate is provided with a connecting hole, and the support plate is connected to the connecting plate by screws.

[0009] As a further optimization of this utility model, the driving device is a motor, and the output shaft of the motor is connected to one of a pair of sprockets.

[0010] As a further optimization of this utility model, the telescopic device is a cylinder, and the movable end of the cylinder is connected to the mounting bracket.

[0011] As a further optimization of this utility model, the surface of the tray is provided with several screw holes. In use, other accessories can be installed on the tray through the screw holes to perform more comprehensive inspection of the wheels and realize more inspection functions.

[0012] The beneficial effects of this utility model are as follows: During testing, the wheel is rotatably mounted on the mounting frame. The mounting frame is moved down by the telescopic device so that the bottom of the wheel abuts against the pallet. At this time, the pressure sensor abuts against the pallet and outputs the detected pressure value. Then, the drive device is turned on to drive the sprocket to rotate, which in turn drives the chain to rotate, causing multiple moving pallets to be displaced. The friction between the pallet and the wheel simulates the friction between the wheel and the ground. By adjusting the moving speed of the pallet, different rotation speeds of the wheel can be achieved to meet different testing requirements, and the test results are more realistic and accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 This is a partial top view of the structure of this utility model;

[0016] The labels in the diagram mean: 1. Frame; 2. Sprocket; 3. Chain; 31. Connecting plate; 311. Connecting hole; 4. Support plate; 41. Screw hole; 5. Mounting plate; 51. Mounting hole; 6. Pressure sensor; 7. Telescopic device; 8. Drive device. Detailed Implementation

[0017] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0018] See appendix Figure 1-3 The present embodiment of this utility model further includes: a polyurethane wheel testing machine, including a frame 1, with two pairs of sprockets 2 corresponding to each other at the front and rear ends of the frame 1. The two pairs of sprockets 2 are connected front and rear by two chains 3. Several support plates 4 are installed on the outer side of the chain 3 along the circumferential direction. Specifically, the chain 3 includes several chain links. The side wall of the chain link is provided with a connecting plate 31. The connecting plate 31 is provided with a connecting hole 311. The support plate 4 is connected to the connecting plate 31 by screws.

[0019] It also includes a drive device 8 that drives the sprocket 2 to rotate. The drive device 8 is a motor, and the output shaft of the motor is connected to one of the pair of sprockets 2.

[0020] The pallet 4 is provided with several mounting brackets for mounting wheels. Specifically, the mounting brackets are a pair of horizontally spaced mounting plates 5, and the pair of mounting plates 5 are provided with a pair of horizontally aligned mounting holes 51.

[0021] Each mounting bracket is equipped with a pressure sensor 6. Above the frame 1 are several telescopic devices 7 for controlling the lifting and lowering of several mounting brackets. The telescopic device 7 is a cylinder, and the movable end of the cylinder is connected to the mounting bracket.

[0022] Furthermore, the surface of the pallet 4 is provided with several screw holes 41. In use, other accessories can be installed on the pallet 4 through the screw holes 41 to perform more comprehensive inspection of the wheels and achieve more inspection functions.

[0023] The principle of this utility model is as follows: during testing and installation, the rotating shaft of the wheel is rotatably connected to a pair of mounting holes 51;

[0024] Then, the telescopic device 7 is activated to move the mounting bracket down, so that the bottom of the wheel abuts against the support plate 4. At this time, the pressure sensor 6 abuts against the support plate 4 and outputs the detected pressure value.

[0025] Next, the drive device 8 is activated to drive the sprocket 2 to rotate, which in turn drives the chain 3 to rotate, causing multiple moving pallets 4 to shift. The friction between the pallets 4 and the wheel simulates the friction between the wheel and the ground. By adjusting the moving speed of the pallets 4, different wheel speeds can be achieved to meet different testing requirements, resulting in more realistic and accurate test results.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A polyurethane wheel testing machine, comprising a frame (1), characterized in that, The frame (1) has two pairs of sprockets (2) at both ends below it. The two pairs of sprockets (2) are connected by two chains (3). Several trays (4) are installed on the outer side of the chains (3) along the circumferential direction. The frame (1) also includes a drive device (8) for driving the sprockets (2) to rotate. Several mounting brackets for mounting wheels are provided above the trays (4). Each mounting bracket is equipped with a pressure sensor (6). Several telescopic devices (7) for controlling the lifting and lowering of several mounting brackets are provided above the frame (1).

2. The polyurethane wheel testing machine according to claim 1, characterized in that, The mounting bracket consists of a pair of horizontally spaced mounting plates (5), and the pair of mounting plates (5) are provided with a pair of horizontally aligned mounting holes (51).

3. The polyurethane wheel testing machine according to claim 1, characterized in that, The chain (3) includes several links, and the side wall of each link is provided with a connecting plate (31). The connecting plate (31) is provided with a connecting hole (311). The support plate (4) and the connecting plate (31) are connected by screws.

4. A polyurethane wheel testing machine according to claim 1, characterized in that, The drive device (8) is a motor, and the output shaft of the motor is connected to one of the pairs of sprockets (2).

5. A polyurethane wheel testing machine according to claim 1, characterized in that, The telescopic device (7) is a cylinder, and the movable end of the cylinder is connected to the mounting bracket.

6. A polyurethane wheel testing machine according to claim 1, characterized in that, The surface of the tray (4) is provided with a number of screw holes (41).

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