Roller life testing machine

Abstract

This utility model discloses a roller life testing machine, including a base truss, a load applying component, a drive component, and a pressure releasing and unloading component. A lever arm is provided on the base truss. The drive component includes a drive motor A and a guide wheel. The load applying component includes a roller clamping mechanism, a pressure applying mechanism, a pressure sensor, and a mounting box. The pressure applying mechanism applies pressure to the roller clamping mechanism, allowing the roller clamped by the roller clamping mechanism to abut against the guide wheel to form a rolling friction pair. The pressure sensor is located between the roller clamping mechanism and the pressure applying mechanism. A controller is provided on the lever arm, and the pressure sensor is signal-connected to the controller. This roller life testing machine, with its specific structure, can infinitely pressurize the roller. During the pressurization process, the pressure is displayed in real time on the controller's display screen via the pressure sensor, achieving precise pressure control. Furthermore, the load pressure adjustment operation is simple and quick, and it is less likely to cause workplace injuries.

Description

Technical Field

[0001] This utility model relates to the field of mechanical component life testing technology, specifically to a roller life testing machine. Background Technology

[0002] Currently, many mechanical devices require the installation of rollers, which can serve as a component of the transmission system or for other purposes. The rotational performance of these rollers in mechanical equipment often directly affects the transmission efficiency and stability of the transmission system, or has other impacts on the performance of the mechanical equipment. Therefore, these rollers need to undergo mechanical performance testing and life parameter testing before leaving the factory.

[0003] Among them, the roller life parameter test is carried out using a roller life testing machine. However, most existing roller life testing machines apply pressure by using levers to load weights. For example, Chinese patent document CN 206208681 U discloses a roller life testing machine, which includes a lower base and an upper support; multiple lever arms are arranged in parallel on the upper support, one end of which is connected to a lever arm support fixed on the upper support, and the other end is connected to a weight device; each lever arm is connected to a roller suspension device, and a weighing sensor is installed on the roller; each lever arm is connected to an adjustment device; the drive device includes a motor, a main shaft connected to the motor, and multiple guide wheels sleeved on the main shaft and cooperating with the rollers.

[0004] However, the operation of moving and fixing weights in the above-mentioned patents is cumbersome and can easily cause workplace injuries; in addition, the force value controlled by adding or removing weights is unstable and it is difficult to accurately achieve the required force value. Excessive force value can easily cause the turntable to contact the support, resulting in damage to the turntable, and the equipment failure cannot be monitored and diagnosed in a timely and effective manner. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a roller life testing machine. This roller life testing machine employs a specific structure capable of stepless pressurization of the roller. During pressurization, a pressure sensor displays the pressure in real time on the controller's screen, achieving precise pressure control. Furthermore, the adjustment of the load pressure is simple and quick, and it is less likely to cause workplace injuries.

[0006] The technical solution of this application is as follows:

[0007] A roller life testing machine includes a base truss, a load applying assembly, a drive assembly, and a pressure releasing and unloading assembly. A lever arm is mounted on the base truss, with one end hinged to the base truss and the other end connected to the pressure releasing and unloading assembly. The pressure releasing and unloading assembly drives the lever arm to rotate up and down around the hinge axis. The drive assembly includes an A drive motor and a guide wheel that cooperates with the roller; the A drive motor drives the guide wheel to rotate. The load applying assembly includes a roller clamping mechanism, a pressure applying mechanism, a pressure sensor, and a mounting box. The mounting box is used to mount the roller clamping mechanism, the pressure applying mechanism, and the pressure sensor, and is detachably connected to the lever arm. The pressure applying mechanism applies pressure to the roller clamping mechanism, causing the roller clamped by the roller clamping mechanism to abut against the guide wheel to form a rolling friction pair. The pressure sensor is located between the roller clamping mechanism and the pressure applying mechanism. A controller is mounted on the lever arm, and the pressure sensor is signal-connected to the controller.

[0008] Compared with existing technologies, the roller life testing machine of this application applies pressure (load) to the roller clamping mechanism through a pressure applying mechanism to simulate the real working conditions of the roller, which can effectively measure the service life of the roller. During the pressurization process, the pressure sensor displays the pressure in real time on the controller's display screen to achieve precise pressure control. When it is necessary to unload the material, the lever arm is driven to rise through the pressure relief unloading component, so that the roller is disengaged from the guide wheel and can be removed. The operation is simple and quick and is less likely to cause workplace injuries.

[0009] As an optimization, in the aforementioned roller life testing machine, the load application component, guide roller, pressure relief and unloading component, lever arm, and controller constitute a roller life testing module. Multiple roller life testing modules are evenly distributed on the base truss. This structure enables the simultaneous life testing of multiple rollers, improving testing efficiency; and facilitates synchronous comparative testing of the rollers.

[0010] As an optimization, in the aforementioned roller life testing machine, the pressure relief and unloading assembly includes a B-drive motor and a screw jack. The end of the screw jack's extension shaft is equipped with a limiting member, and the lever arm has a connecting boss with a slotted hole. The limiting member and the slotted hole form a sliding pair structure. This structure allows the screw jack to move up and down via the B-drive motor, and the lever arm to rotate up and down around the hinge axis via the sliding hinge structure of the limiting member and the slotted hole, facilitating pressure relief and unloading operations. Furthermore, a reducer is provided between the B-drive motor and the screw jack. This structure reduces the input speed and increases the output torque, facilitating smooth lifting of the lever arm.

[0011] As an optimization, in the aforementioned roller life testing machine, the load application assembly further includes a spring mechanism, which is located between the pressure sensor and the application mechanism. The spring mechanism includes a fixed plate, a guide post, a movable plate, and a spring. The fixed plate and the movable plate are connected via the guide post, and the movable plate and the guide post can slide relative to each other. The spring is located between the fixed plate and the movable plate, with both ends abutting against the fixed plate and the movable plate respectively. The fixed plate is connected to the pressure sensor, and the movable plate is connected to the application mechanism. With this structure, the spring buffers the applied pressure, the application stroke is lengthened, allowing the application mechanism to apply pressure to the roller clamping mechanism more precisely; and it avoids damage to the pressure sensor caused by rigid pressure.

[0012] As an optimization, in the aforementioned roller life testing machine, the roller clamping mechanism includes a clamping body, a roller mounting shaft, and a roller mounting block. The clamping body has a Y-shaped structure, with a semi-circular groove at its head. The roller mounting block has a semi-circular groove, and the semi-circular groove and groove combine to form the mounting hole for the roller mounting shaft. The Y-shaped structure ensures the roller is positioned precisely at the Y-shaped groove, resulting in a compact structure and material savings. The separate design of the roller mounting block and clamping body facilitates roller replacement and installation, and the simple structure reduces processing effort.

[0013] As an optimization, in the aforementioned roller life testing machine, the pressure application mechanism includes a lead screw A and a handwheel; one end of the lead screw A abuts against the movable plate of the spring mechanism, and the other end extends out of the mounting box and connects to the handwheel. This structure, using the handwheel and lead screw A to apply pressure, is simple in structure and relatively convenient to operate.

[0014] When implementing this utility model, an electric loading method can also be used. As an optimization, in the aforementioned roller life testing machine, the pressure application mechanism includes a C-drive motor and a B-lead screw; one end of the B-lead screw is screwed to the movable plate of the spring mechanism, and the other end extends out of the mounting box and connects to the C-drive motor. Using this structure, pressure is applied electrically, making operation simple and quick. Furthermore, the C-drive motor is a servo motor. Using a servo motor as the drive structure facilitates control of the applied pressure and is beneficial for precise pressure application.

[0015] As an optimization, the aforementioned roller life testing machine is equipped with an emergency stop button on the base truss. This structure enables the equipment to be stopped promptly in case of emergencies, improving equipment safety. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the roller life testing machine (equipped with rollers) in Example 1.

[0017] Figure 2 yes Figure 1 A schematic diagram of the roller life detection module (equipped with rollers);

[0018] Figure 3 yes Figure 2 A partial structural diagram;

[0019] Figure 4 yes Figure 2 A schematic diagram of the load-applying component (equipped with rollers);

[0020] Figure 5 yes Figure 4 A partial structural diagram (equipped with rollers);

[0021] Figure 6 yes Figure 5 A partial structural diagram;

[0022] Figure 7 This is a schematic diagram of the roller life testing machine (equipped with rollers) in Example 2.

[0023] Figure 8 yes Figure 7 A schematic diagram of the roller life detection module (equipped with rollers);

[0024] Figure 9 yes Figure 8 A schematic diagram of the load-applying component (equipped with rollers);

[0025] Figure 10 yes Figure 9 A partial structural diagram (equipped with rollers).

[0026] The labels in the attached diagram are as follows: 1-base truss; 2-load applying component; 21-roller clamping mechanism; 211-clamping body; 2111-semi-circular groove one; 212-roller mounting shaft; 213-roller mounting block; 2131-semi-circular groove two; 22-applying mechanism; 221-A lead screw; 222-handwheel; 223-C drive motor; 224-B lead screw; 23-pressure sensor; 24-mounting box; 25-spring mechanism. 251-Fixed plate, 252-Guide column, 253-Modible plate, 254-Spring; 3-Drive assembly, 31-A drive motor, 32-Guide wheel; 4-Pressure relief and unloading assembly, 41-B drive motor, 42-Screw jack, 421-Extending shaft, 43-Limiting component, 44-Reducer; 5-Lever arm, 51-Hinge shaft, 52-Connecting boss, 521-Strip hole; 6-Roller; 7-Controller; 8-Emergency stop button. Detailed Implementation

[0027] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present application. In the following embodiments, content not described in detail or shown in detail in the accompanying drawings is common knowledge in the art.

[0028] Example 1 (see Figures 1-6 ):

[0029] A roller life testing machine includes a base truss 1, a load applying component 2, a drive component 3, and a pressure releasing and unloading component 4. The base truss 1 is equipped with a lever arm 5, one end of which is hinged to the base truss 1, and the other end is connected to the pressure releasing and unloading component 4. The pressure releasing and unloading component 4 drives the lever arm 5 to rotate up and down around the hinge axis 51. The drive component 3 includes an A drive motor 31 and a guide wheel 32 that cooperates with the roller 6; the A drive motor 31 drives the guide wheel 32 to rotate. The load applying component 2 includes a roller clamping mechanism 21 and a pressure applying mechanism. 22. Pressure sensor 23 and mounting box 24. The mounting box 24 is used to install and place the roller clamping mechanism 21, the pressure applying mechanism 22 and the pressure sensor 23. The mounting box 24 is detachably connected to the lever arm 5. The pressure applying mechanism 22 is used to apply pressure to the roller clamping mechanism 21 so that the roller 6 clamped by the roller clamping mechanism 21 can abut against the guide wheel 32 to form a rolling friction pair. The pressure sensor 23 is located between the roller clamping mechanism 21 and the pressure applying mechanism 22. The lever arm 5 is equipped with a controller 7, and the pressure sensor 23 is signal-connected to the controller 7.

[0030] In this embodiment, the load applying component 2, guide wheel 32, pressure releasing and unloading component 4, lever arm 5, and controller 7 constitute a roller life detection module. Multiple roller life detection modules are evenly distributed on the base truss 1. This structure enables the simultaneous life detection of multiple rollers 6, improving detection efficiency; and facilitates synchronous comparative testing of the rollers 6.

[0031] In this embodiment, the pressure relief and unloading assembly 4 includes a B-drive motor 41 and a screw jack 42. The end of the extension shaft 421 of the screw jack 42 is provided with a limiting member 43. The lever arm 5 is provided with a connecting boss 52, and the connecting boss 52 is provided with a strip-shaped hole 521. The limiting member 43 and the strip-shaped hole 521 form a sliding pair structure. This structure allows the screw jack 42 to move up and down via the B-drive motor 41, and the lever arm 5 to rotate up and down around the hinge shaft 51 via the sliding hinge structure of the limiting member 43 and the strip-shaped hole 521, facilitating pressure relief and unloading operations.

[0032] In this embodiment, a reducer 44 is provided between the B drive motor 41 and the screw jack 42. This structure can reduce the input speed and increase the output torque, facilitating the smooth lifting of the lever arm 5.

[0033] In this embodiment, the load applying component 2 further includes a spring mechanism 25, which is disposed between the pressure sensor 23 and the applying mechanism 22. The spring mechanism 25 includes a fixed plate 251, a guide post 252, a movable plate 253, and a spring 254. The fixed plate 251 and the movable plate 253 are connected by the guide post 252, and the movable plate 253 and the guide post 252 can slide relative to each other. The spring 254 is disposed between the fixed plate 251 and the movable plate 253, and its two ends abut against the fixed plate 251 and the movable plate 253 respectively. The fixed plate 251 is connected to the pressure sensor 23, and the movable plate 253 is connected to the applying mechanism 22. With this structure, the spring 254 buffers the applied pressure, and the pressure stroke is lengthened, allowing the applying mechanism 22 to apply pressure to the roller clamping mechanism 21 more accurately; and avoiding damage to the pressure sensor 23 caused by rigid pressure.

[0034] In this embodiment, the roller clamping mechanism 21 includes a clamping body 211, a roller mounting shaft 212, and a roller mounting block 213. The clamping body 211 has a Y-shaped structure, with a semi-circular groove 2111 at its head. The roller mounting block 213 has a semi-circular groove 2131. The semi-circular groove 2111 and the semi-circular groove 2131 combine to form the mounting hole for the roller mounting shaft 212. The Y-shaped structure ensures that the roller 6 is positioned precisely at the Y-shaped groove, resulting in a compact structure and material savings. The separate design of the roller mounting block 213 from the clamping body 211 makes it easier to replace and install the roller 6, and the structure is simple and requires less processing effort.

[0035] In this embodiment, the pressure applying mechanism 22 includes a lead screw 221 (A-type) and a handwheel 222. One end of the lead screw 221 abuts against the movable plate 253 of the spring mechanism 25, and the other end extends out of the mounting box 24 and connects to the handwheel 222. This structure, which applies pressure via the handwheel 222 and the lead screw 221, is simple in structure and relatively convenient to operate.

[0036] In this embodiment, an emergency stop button 8 is provided on the base truss 1. This structure can stop the equipment in time in case of emergencies, improving the safety of the equipment.

[0037] When the roller life testing machine of this embodiment is working, the roller 6 is mounted on the clamping body 211 through the roller mounting shaft 212 and the roller mounting block 213. The handwheel 222 is rotated so that the roller 6 abuts against the guide wheel 32. The handwheel 222 is rotated to apply pressure to the roller 6, and the value displayed on the controller 7 is observed. The value is adjusted to the size required for the test. The A drive motor 31 is started so that the guide wheel 32 rotates, thereby driving the roller 6 to rotate, which can simulate the real working condition of the roller 6 for testing.

[0038] Example 2 (see Figures 7-10 ):

[0039] Unlike Embodiment 1, in this embodiment, the pressure applying mechanism 22 includes a C-drive motor 223 and a B-lead screw 224; one end of the B-lead screw 224 is screwed to the movable plate 253 of the spring mechanism 25, and the other end extends out of the mounting box 24 and is connected to the C-drive motor 223. This structure allows for electric pressure application, making operation simple and quick.

[0040] In this embodiment, the C drive motor 223 is a servo motor. Using a servo motor as the drive structure facilitates control of the applied pressure and is beneficial for precise pressure application.

[0041] When the roller life testing machine of this embodiment is working, the roller 6 is mounted on the clamping body 211 through the roller mounting shaft 212 and the roller mounting block 213. The C drive motor 223 is started so that the roller 6 abuts against the guide wheel 32 and pressure is applied to the roller 6. The value displayed on the controller 7 is observed and adjusted to the size required for the test. The C drive motor 223 is then turned off. The A drive motor 31 is started so that the guide wheel 32 rotates, thereby driving the roller 6 to rotate, which can simulate the real working condition of the roller 6 for testing.

[0042] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A roller life tester characterized by: The system includes a base truss (1), a load-applying assembly (2), a drive assembly (3), and a pressure-relieving and unloading assembly (4). The base truss (1) has a lever arm (5), one end of which is hinged to the base truss (1), and the other end is connected to the pressure-relieving and unloading assembly (4). The pressure-relieving and unloading assembly (4) drives the lever arm (5) to rotate up and down around the hinge axis (51). The drive assembly (3) includes an A-drive motor (31) and a guide wheel (32) that cooperates with the roller (6). The A-drive motor (31) drives the guide wheel (32) to rotate. The load-applying assembly (2) includes a roller clamping mechanism (21) and a pressure-applying mechanism (22). The pressure sensor (23) and the mounting box (24) are used to install and place the roller clamping mechanism (21), the pressure applying mechanism (22) and the pressure sensor (23). The mounting box (24) is detachably connected to the lever arm (5). The pressure applying mechanism (22) is used to apply pressure to the roller clamping mechanism (21) so that the roller (6) clamped by the roller clamping mechanism (21) can abut against the guide wheel (32) to form a rolling friction pair. The pressure sensor (23) is located between the roller clamping mechanism (21) and the pressure applying mechanism (22). The lever arm (5) is equipped with a controller (7), and the pressure sensor (23) is signal connected to the controller (7).

2. The roller life tester of claim 1, wherein: The load applying component (2), guide wheel (32), pressure relief and unloading component (4), lever arm (5) and controller (7) constitute a roller life detection module. There are multiple roller life detection modules, which are evenly distributed on the base truss (1).

3. The roller life tester of claim 2, wherein: The pressure relief and unloading assembly (4) includes a B drive motor (41) and a screw jack (42); the end of the extension shaft (421) of the screw jack (42) is provided with a limiting member (43), the lever arm (5) is provided with a connecting boss (52), the connecting boss (52) is provided with a strip hole (521), and the limiting member (43) and the strip hole (521) form a sliding pair structure.

4. The roller life tester of claim 3, wherein: The load applying component (2) further includes a spring mechanism (25), which is located between the pressure sensor (23) and the applying mechanism (22). The spring mechanism (25) includes a fixed plate (251), a guide post (252), a movable plate (253), and a spring (254). The fixed plate (251) and the movable plate (253) are connected by the guide post (252), and the movable plate (253) and the guide post (252) can slide relative to each other. The spring (254) is located between the fixed plate (251) and the movable plate (253), and its two ends abut against the fixed plate (251) and the movable plate (253) respectively. The fixed plate (251) is connected to the pressure sensor (23), and the movable plate (253) is connected to the applying mechanism (22).

5. The roller life tester of claim 4, wherein: The roller clamping mechanism (21) includes a clamping body (211), a roller mounting shaft (212), and a roller mounting block (213). The clamping body (211) has a Y-shaped structure, with a semi-circular groove one (2111) at its head. The roller mounting block (213) has a semi-circular groove two (2131). The semi-circular groove one (2111) and the semi-circular groove two (2131) are combined to form the mounting hole of the roller mounting shaft (212).

6. The roller life tester of claim 5, wherein: The pressure application mechanism (22) includes a lead screw (221) and a handwheel (222); one end of the lead screw (221) abuts against the movable plate (253) of the spring mechanism (25), and the other end extends out of the mounting box (24) and is connected to the handwheel (222).

7. The roller life tester of claim 5 wherein: The pressure application mechanism (22) includes a C drive motor (223) and a B lead screw (224); one end of the B lead screw (224) is screwed to the movable plate (253) of the spring mechanism (25), and the other end extends out of the mounting box (24) and is connected to the C drive motor (223).

8. The roller life tester of any of claims 1-7, wherein: An emergency stop button (8) is provided on the base truss (1).

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