Caster quality testing device and its working method

Abstract

This invention provides a caster quality detection device and its operating method. The caster quality detection device includes a support base, a caster fixing assembly, a pressure mechanism, a rotating mechanism, a vibration velocity sensor, and a controller. The support base is provided with a guide post extending in the vertical direction. The pressure mechanism is mounted on the support base, and the caster fixing assembly is mounted on the drive shaft of the pressure mechanism. The pressure mechanism drives the caster fixing assembly to move vertically along the guide post. The rotating mechanism includes a drive component and a turntable. The drive component drives the turntable to rotate. The turntable is located below the caster fixing assembly. The pressure mechanism can apply a force toward the turntable to the caster fixing assembly. The vibration velocity sensor is disposed close to the caster fixing assembly. The vibration velocity sensor, the pressure mechanism, and the rotating mechanism are all electrically connected to the controller. The caster quality detection device can detect the caster quality in real time.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and more specifically, to a caster quality testing device and its working method. Background Technology

[0002] Existing methods for testing caster quality typically involve manual pushing. The process involves assembling the caster onto a test model, then manually dragging the model to check the caster's condition. However, the test results are affected by many factors, such as varying pulling force and speed from different people, and different road conditions, leading to errors. Furthermore, the method has low automation, high labor intensity for workers, and low efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide a caster quality testing device for online real-time detection of caster quality.

[0004] Another object of the present invention is to provide a method for operating the above-mentioned caster quality testing device.

[0005] To achieve the above-mentioned main objectives, the present invention provides a caster quality detection device, including a support base, a caster fixing assembly, a pressure mechanism, a rotating mechanism, a vibration velocity sensor, and a controller. The support base is provided with a guide post extending in the vertical direction. The pressure mechanism is mounted on the support base, and the caster fixing assembly is mounted on the drive shaft of the pressure mechanism. The pressure mechanism drives the caster fixing assembly to move vertically along the guide post. The rotating mechanism includes a drive component and a turntable. The drive component drives the turntable to rotate. The turntable is located below the caster fixing assembly. The pressure mechanism can apply a force toward the turntable to the caster fixing assembly. The vibration velocity sensor is disposed close to the caster fixing assembly. The vibration velocity sensor, the pressure mechanism, and the rotating mechanism are all electrically connected to the controller.

[0006] As can be seen from the above scheme, when the caster quality detection device is working, the caster is first installed on the caster fixing assembly. Next, the pressure mechanism applies a vertically downward force to the caster, causing the caster to make pressure contact with the turntable. Then, the drive component drives the turntable to rotate, thus rotating the caster. A vibration velocity sensor detects the amplitude generated by the caster during rotation in real time and converts the amplitude fluctuation signal into a voltage signal, which is then output to the controller. The controller determines whether the caster's quality is up to standard based on the voltage signal.

[0007] By incorporating vibration velocity sensors, the quality of casters can be monitored in real time, allowing for the timely detection of substandard casters and improving inspection efficiency. The caster quality inspection device can complete the inspection automatically without manual intervention, and the test results are consistent. Furthermore, the use of a pressure mechanism with adjustable pressure eliminates the need for manual handling of the pressure block, resulting in a small footprint.

[0008] A preferred embodiment is that the caster fixing assembly includes a first fixing member and a second fixing member. The first fixing member has a connecting groove, and the second fixing member is detachably installed in the connecting groove. The connecting groove extends horizontally and has a guide opening and a mounting opening. The guide opening is downwardly positioned, and the mounting opening is located at the end of the connecting groove in the horizontal direction. Limiting portions are provided on the opposite side walls of the connecting groove. In the horizontal direction, the limiting portions protrude from the side walls of the connecting groove, and in the vertical direction, the limiting portions restrict the second fixing member.

[0009] Therefore, when the radial cross-section of the caster's fixing part is rectangular, the second fixing member is removed from the first fixing member, and the caster's fixing part is inserted into the connecting groove through the mounting opening, thus achieving a fixed connection between the caster and the caster fixing assembly. When the radial cross-section of the caster's fixing part is circular, the second fixing member is inserted into the connecting groove through the mounting opening, and then the caster's fixing part is fixedly connected to the second fixing member, thus achieving a fixed connection between the caster and the caster fixing assembly. This allows the caster fixing assembly to adapt to casters with different fixing methods, improving the versatility of the caster fixing assembly and reducing costs.

[0010] A further embodiment is that the first fixing member has a first fixing hole, and the second fixing member has a second fixing hole at a position corresponding to the first fixing hole. The fastener passes through the first fixing hole and the second fixing hole to fix the first fixing member and the second fixing member together.

[0011] Therefore, the fastener is used to detachably and securely connect the first and second fasteners together.

[0012] A further proposed solution is to provide a caster fixing position in the middle of the length direction of the first fixing member, and to provide a third fixing hole in the caster fixing position.

[0013] As can be seen, after the caster's fixing part is inserted into the connecting groove, the fastener passes through the caster's fixing part and the third fixing hole, fixing the caster to the first fixing member.

[0014] A preferred embodiment is that a second caster fixing hole is provided at the middle of the second fixing member along its length.

[0015] As can be seen, the fixing part of the caster is installed into the second caster fixing hole, thereby realizing the fixed connection between the caster and the caster fixing assembly.

[0016] A preferred embodiment is that the pressurizing mechanism includes a cylinder and a pressure plate, the pressure plate being mounted on a guide post and connected to the drive shaft of the cylinder, with a caster fixing assembly mounted on the pressure plate.

[0017] Therefore, it can be seen that the cylinder can adjust the pressure, thereby meeting the requirements of different pressures applied to the caster and enabling quality testing of casters that require different loads.

[0018] A preferred embodiment is that the caster quality detection device also includes an alarm, which is electrically connected to the controller.

[0019] Therefore, when the quality of the casters is detected to be substandard, the alarm can emit an alarm signal to remind the operator.

[0020] A preferred embodiment is that the number of caster fixing components, the number of vibration velocity sensors, and the number of alarms are all the same, and there are multiple of each. Each caster fixing component is equipped with one vibration velocity sensor, and the multiple caster fixing components are evenly arranged along the circumference of the turntable.

[0021] Therefore, each caster fixing component can be fitted with one caster, thereby improving the detection efficiency.

[0022] To achieve the aforementioned objective, the present invention provides a method for operating the caster quality detection device. The method includes the following steps: installing the caster on a caster fixing assembly; applying a downward vertical force to the caster using a pressure mechanism, causing the caster to make pressure contact with the turntable; driving a drive component to rotate the turntable and thus the caster; a vibration speed sensor to detect the vibration signal generated by the caster during rotation in real time, converting the vibration signal into a voltage signal, and outputting the voltage signal to a controller. The controller determines whether the caster's quality is up to standard based on the voltage signal.

[0023] A preferred embodiment is that the caster quality detection device also includes an alarm, which is electrically connected to the controller. If the caster fails to meet quality standards, the alarm will sound an alarm signal. Attached Figure Description

[0024] Figure 1 This is a structural diagram of an embodiment of the caster quality testing device of the present invention.

[0025] Figure 2 This is an exploded view of an embodiment of the caster quality testing device of the present invention.

[0026] Figure 3 This is a bottom view of an embodiment of the caster quality testing device of the present invention.

[0027] Figure 4 This is a structural diagram of the first fixing component in an embodiment of the caster quality testing device of the present invention.

[0028] Figure 5 This is a cross-sectional view of the second fixing member in an embodiment of the caster quality testing device of the present invention.

[0029] Figure 6 This is an exploded view of the first structure of the caster and caster fixing assembly in the embodiment of the caster quality testing device of the present invention.

[0030] Figure 7 This is an exploded view of the second structural caster and caster fixing device in an embodiment of the caster quality testing device of the present invention.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032] See Figures 1 to 3 The caster quality detection device includes a support base 1, a pressure mechanism 2, a rotation mechanism 3, a controller, four caster fixing components 4, four vibration speed sensors 5, and four alarms.

[0033] The support base 1 includes a base 11, a guide post 12 and an upper plate 13. The guide post 12 is connected between the base 11 and the upper plate 13 and extends in the vertical direction.

[0034] The pressurizing mechanism 2 includes a cylinder 20 and a pressure plate 23. The pressure plate 23 is placed horizontally. The cylinder body 21 is mounted on the upper seat plate 13. The pressure plate 23 is fitted onto the guide post 12. The upper surface of the pressure plate 23 is fixedly connected to the drive shaft 22 of the cylinder. The caster fixing assembly 4 is mounted on the lower surface of the pressure plate 23. The cylinder 20 drives the pressure plate 23 and causes the caster fixing assembly 4 to move vertically along the guide post 12.

[0035] The rotating mechanism 3 includes a drive component 31 and a turntable 32. The drive component 31 is fixedly mounted on the base 11. The drive shaft of the drive component 31 passes through the top plate 111 of the base 11 and connects to the turntable 32. The drive component 31 drives the turntable 32 to rotate. Caster fixing assemblies 4 are located between the pressure plate 23 and the turntable 32, with four caster fixing assemblies 4 evenly arranged along the circumference of the turntable 32. A cylinder 20 can apply a force towards the turntable 32 to the caster fixing assemblies 4. The cylinder can adjust the pressure applied to the caster fixing assemblies 4, thereby enabling quality testing of casters requiring different loads when different pressures are applied to the casters.

[0036] A vibration speed sensor 5 is installed on the pressure plate 23 near each caster fixing component 4. The vibration speed sensor 5, the alarm, the cylinder 20 and the drive component 31 of the rotating mechanism 3 are all electrically connected to the controller.

[0037] See Figure 4 and Figure 5The caster fixing assembly 4 includes a first fixing member 41 and a second fixing member 42. The first fixing member 41 has a connecting groove 43, and the second fixing member 42 is detachably installed in the connecting groove 43. The connecting groove 43 extends horizontally and has a guide opening 432 and a mounting opening 431. The guide opening 432 faces downwards. The connecting groove 43 passes through the first fixing member 41 horizontally. There are two mounting openings 431 located at both ends of the length of the connecting groove 43. Limiting portions 44 are provided on the opposite sidewalls 433 and 434 of the connecting groove 43. In the horizontal direction, the limiting portions 44 protrude from the sidewalls of the connecting groove 43, and in the vertical direction, they restrict the second fixing member 42.

[0038] The first fixing member 41 has a first fixing hole 411, and the second fixing member 42 has a second fixing hole 421 at a position corresponding to the first fixing hole 411. The fastener passes through the first fixing hole 411 and the second fixing hole 421 to fix the first fixing member 41 and the second fixing member 42 in a fixed connection.

[0039] A caster fixing position 412 is provided at the middle of the length of the first fixing member 41, and a third fixing hole is provided on the caster fixing position 412. Figure 6 As shown, when the radial cross-section of the fixing part 101 of the caster 100 is rectangular, the second fixing member 42 is removed from the first fixing member 41, and the fixing part 101 of the caster 100 is inserted into the connecting groove 43 through the mounting opening 431, thereby achieving a fixed connection between the caster 100 and the caster fixing assembly 4. After the fixing part 101 of the caster 100 is inserted into the connecting groove 43, the fastener passes through the fixing part 101 of the caster 100 and the third fixing hole, fixing the caster 100 to the first fixing member 41.

[0040] A second caster fixing hole 422 is provided at the middle of the length direction of the second fixing member 42. For example... Figure 7 As shown, when the radial cross-section of the fixing part 201 of the caster 200 is circular, the second fixing member 42 is inserted into the connecting groove 43 from the mounting opening 431. Then, the fixing part 201 of the caster 200 is fixedly connected to the second fixing member 42, thereby achieving a fixed connection between the caster 200 and the caster fixing assembly 4. The fixing part 201 of the caster 200 is installed into the second caster fixing hole 422. Optionally, the fixing part 201 of the caster 200 and the second caster fixing hole 422 are threadedly connected, thereby achieving a fixed connection between the caster and the caster fixing assembly 4.

[0041] The working method of the caster quality detection device includes the following steps. First, the caster is installed on the caster fixing assembly 4. Next, the pressure mechanism 2 applies a vertically downward force to the caster, causing the caster to make pressure contact with the turntable 32. Then, the drive component 31 drives the turntable 32 to rotate, thereby causing the caster to rotate. The vibration speed sensor 5 detects the vibration signal generated by the caster during rotation in real time and converts the vibration signal into a voltage signal, which is then output to the controller. The voltage value is proportional to the vibration speed value. The controller compares the voltage signal value with a preset threshold to determine whether the caster's quality is qualified. If the voltage signal value is greater than the preset threshold, the caster's quality is unqualified, and the alarm sounds, thus reminding the operator which specific caster is unqualified, allowing the operator to make a timely judgment.

[0042] As can be seen above, by setting up a vibration velocity sensor, the quality of the casters can be detected in real time, and any defective casters can be identified promptly, thereby improving inspection efficiency. The caster quality inspection device can complete the inspection automatically without manual intervention, and the test results are consistent. In addition, the pressure mechanism is adopted, and the pressure can be adjusted, eliminating the need for manual handling of the pressure block and occupying little space. The caster fixing components can adapt to casters with different fixing methods, improving the versatility of the caster fixing components and reducing costs.

[0043] Furthermore, vibration velocity sensors can also be mounted on the caster fixing components. The number of caster fixing components can also be one, two, three, or five, depending on actual needs. Each caster fixing component has one vibration velocity sensor fixedly mounted on it to detect the mass of the caster fixed to the corresponding component. The number of mounting openings can also be one, with the end of the connecting groove furthest from the opening closed, which allows for better horizontal positioning of the second fixing component relative to the first fixing component. These modifications also achieve the purpose of the invention.

[0044] Finally, it should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A caster wheel quality detection device, characterized by, include: A support base, wherein the support base is provided with a guide post extending in the vertical direction; A pressurizing mechanism, which is mounted on the support base; A caster fixing assembly is mounted on the drive shaft of the pressurizing mechanism, and the pressurizing mechanism drives the caster fixing assembly to move vertically along the guide post; A rotating mechanism, comprising a drive component and a turntable, wherein the drive component drives the turntable to rotate, the turntable being located below the caster fixing assembly, and the pressurizing mechanism is capable of applying a force toward the turntable to the caster fixing assembly; A vibration speed sensor is provided, which is located near the caster fixing assembly, and is used to detect the vibration signal generated by the caster during rotation in real time, convert the vibration signal into a voltage signal, and then output the voltage signal to the controller. The controller is electrically connected to the vibration speed sensor, the pressurizing mechanism, and the rotating mechanism. The controller compares the voltage signal value with a preset threshold to determine whether the quality of the caster is up to standard. The caster fixing assembly includes a first fixing member and a second fixing member. The first fixing member has a connecting groove, and the second fixing member is detachably installed in the connecting groove. The connecting groove extends horizontally and has a guide opening and a mounting opening. The guide opening faces downward and the mounting opening is located at the end of the connecting groove in the horizontal direction. Limiting portions are provided on both sides of the connecting groove that are opposite to each other. In the horizontal direction, the limiting portions protrude from the side walls of the connecting groove, and in the vertical direction, the limiting portions restrict the second fixing member. The first fixing member has a first fixing hole, and the second fixing member has a second fixing hole at a position corresponding to the first fixing hole. The fastener passes through the first fixing hole and the second fixing hole to fix the first fixing member and the second fixing member to be fixedly connected. A caster fixing position is provided at the middle of the first fixing member along its length, and a third fixing hole is provided on the caster fixing position; The second fixing member has a second caster fixing hole in the middle of its length direction.

2. The caster quality testing device according to claim 1, characterized in that: The pressurizing mechanism includes a cylinder and a pressure plate. The pressure plate is mounted on the guide post and connected to the drive shaft of the cylinder. The caster fixing assembly is mounted on the pressure plate.

3. The caster quality testing device according to claim 1 or 2, characterized in that: The caster quality detection device also includes an alarm, which is electrically connected to the controller.

4. The caster quality testing device according to claim 3, characterized in that: The number of caster fixing components, the number of vibration speed sensors, and the number of alarms are all the same and there are multiple of each; Each of the caster fixing components is provided with a corresponding vibration speed sensor, and the multiple caster fixing components are evenly arranged along the circumference of the turntable.

5. A method of operating a caster wheel quality detection apparatus, characterised in that, The caster quality testing device is as described in claim 1 or 2; The working method includes the following steps: Install the casters onto the caster fixing assembly; The pressurizing mechanism applies a vertically downward force to the caster, and the caster makes pressure contact with the turntable; The drive component drives the turntable to rotate and drives the casters to rotate; The vibration speed sensor detects the vibration signal generated by the caster during rotation in real time, converts the vibration signal into a voltage signal, and outputs the voltage signal to the controller. The controller determines whether the quality of the caster is up to standard based on the voltage signal.

6. The working method of the caster quality detection device according to claim 5, characterized in that: The caster quality detection device also includes an alarm, which is electrically connected to the controller. If the caster is substandard, the alarm will issue an alarm signal.

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