Nylon wheel pressure testing apparatus

Abstract

The application discloses a nylon wheel pressure testing device for testing the strength of the side surface and the bottom surface of a nylon wheel, wherein the nylon wheel comprises a nylon sleeve on the outside and a steel core assembly on the inside; the pressure testing device comprises a test cavity and a fixing hole formed on the side of the test cavity; a plurality of fixing shafts with different specifications are detachably installed on the fixing hole; the fixing shafts are suitable for fixing and suspending the nylon wheel in the test cavity, and the test cavity limits the nylon wheel in the radial range of the fixing shafts during the whole testing process. By installing the fixing shafts with different specifications, the nylon wheels with different inner diameters can be fixed, and the nylon wheels can be kept in an upright posture, so that the pressure testing of the top surface and the side surface of the nylon wheel is facilitated, and the testing process does not need to be disassembled and secondarily fixed.

Description

Technical Field

[0001] This application relates to the field of pressure testing equipment technology, and in particular to a nylon wheel pressure testing device. Background Technology

[0002] Nylon wheels are lightweight and are commonly used in various fields to replace some metal wheels. Nylon wheels can perform the same functions and effects as certain metal parts, and may even be better. Their widespread use is due to their light weight, wear resistance, long service life, and low likelihood of generating frictional sparks. However, pure nylon wheels have slightly lower strength; therefore, a steel core is typically added to increase structural strength and load-bearing capacity.

[0003] The pressure that a nylon wheel can withstand during normal use is generally the pressure borne by the circumference of the wheel body. Pressure tests usually only test the pressure at this point. However, the fit strength between the nylon wheel and the steel core assembly is generally neglected. Such an inspection usually requires the nylon wheel to expose the fit between the nylon sleeve and the steel core assembly. Conventional pressure testing equipment lays the wheel body flat, with the nylon sleeve and steel core assembly pressed against the test plane, making it difficult to measure the fit strength between the nylon wheel and the steel core assembly. Utility Model Content

[0004] The purpose of this application is to provide a nylon wheel pressure testing device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a nylon wheel pressure testing device for testing the strength of the side and bottom surfaces of a nylon wheel. The nylon wheel includes an outer nylon sleeve and an inner steel core assembly. The pressure testing device includes a test chamber and a fixing hole formed on the side of the test chamber. Various specifications of fixing shafts are detachably installed in the fixing hole. The fixing shafts are adapted to fix the nylon wheel and suspend it in the test chamber, and cooperate with the test chamber to limit the nylon wheel to the radial range of the fixing shafts throughout the testing process.

[0006] As a preferred embodiment, the testing device further includes a first testing section coaxially arranged with the fixed shaft, and a first pressure adjustment structure is provided on the outer side of the first testing section. The first pressure adjustment structure is adapted to adjust the interaction strength between the first testing section and the side of the nylon wheel.

[0007] As a preferred embodiment, the testing device further includes a second testing section disposed on the top, the second testing section being provided with a second pressure adjustment structure, the second pressure adjustment structure being adapted to adjust the interaction strength between the second testing section and the nylon wheel surface.

[0008] As a preferred embodiment, the second test unit includes a rotatable pressure roller, a motor for driving the pressure roller to rotate, and a limiting part for restricting the movement of the pressure roller within a set range.

[0009] As a preferred embodiment, the test chamber is provided with a pressure sensing structure protruding around the fixing hole. The pressure sensing structure is annular in shape, and the outermost outer diameter of the pressure sensing structure is less than or equal to the maximum outer diameter of the steel core assembly.

[0010] As a preferred embodiment, the side of the first test section that contacts the side of the nylon wheel is an annular plane, wherein the minimum inner diameter of the annular plane is greater than the maximum outer diameter of the steel core assembly and less than the maximum outer diameter of the nylon sleeve.

[0011] As a preferred embodiment, an extension frame is provided at the bottom of the outer side of the test chamber, and the extension frame is provided with fixing holes running through it from top to bottom.

[0012] As a preferred embodiment, the first pressure regulating structure is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw slide.

[0013] As a preferred embodiment, the second pressure regulating structure is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw slide.

[0014] As a preferred embodiment, the testing equipment further includes a fan and an air duct, the air duct being connected to the test chamber.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: By installing fixed shafts of different specifications, nylon wheels with different inner diameters can be fixed and kept in an upright position, which facilitates pressure testing on the top and sides of the nylon wheels without the need for disassembly and secondary fixing during the testing process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0017] Figure 2 yes Figure 1 The front view.

[0018] Figure 3 yes Figure 1 The right view.

[0019] Figure 4 This is a schematic diagram of the nylon wheel used in the second test section.

[0020] Figure 5 This is a schematic diagram of the second pressure sensing structure and the function of the Miron wheel.

[0021] In the figure: 1. Test chamber; 2. Second pressure regulating structure; 3. Air duct; 4. Blower; 5. Fixed shaft; 6. First pressure regulating structure; 7. Nylon sleeve; 8. First test section; 9. Pressure sensing structure; 10. Lead screw. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] Example: Reference Figures 1 to 5This application proposes a nylon wheel pressure testing device. The nylon wheel includes an outer nylon sleeve 7 and an inner steel core assembly. The pressure testing device includes a test chamber 1 and a fixing hole formed on the side of the test chamber 1. Various sizes of fixing shafts 5 are detachably installed in the fixing hole. The fixing shafts 5 are suitable for fixing and suspending the nylon wheel within the test chamber 1, and cooperate with the test chamber 1 to confine the nylon wheel within the radial range of the fixing shafts 5 throughout the testing process. By installing the fixing shafts 5 with different specifications, nylon wheels of different inner diameters can be fixed, keeping the nylon wheels in an upright position, thus facilitating pressure testing of the top and side surfaces of the nylon wheel. Conventional placement methods, such as fixing the nylon wheel flat, are usually only convenient for pressure testing at the nylon sleeve 7, and it is difficult to test the fit strength between the steel core assembly and the nylon sleeve 7. By aligning the nylon wheel vertically, the mating surfaces of its steel core assembly and nylon sleeve 7 are exposed, making it easier to perform pressure tests on the top and side surfaces of the nylon wheel together using the testing equipment. The testing process does not require disassembly or secondary fixation.

[0027] This testing equipment is mainly used for strength testing of the side and bottom surfaces of nylon wheels. The top and bottom surfaces of the nylon sleeve are essentially the same, as the outermost surface of the nylon sleeve is a circumferential surface; the side surfaces of the nylon wheel refer to its two circular surfaces. To ensure testing at these two different locations, the testing equipment also includes a first testing section 8 coaxially arranged with the fixed shaft 5 and a second testing section 11 located at the top of the test chamber 1. The first testing section 8 has a first pressure adjustment structure 6 on its outer side, which is suitable for adjusting the interaction strength between the first testing section 8 and the side surface of the nylon wheel. The second testing section 11 has a second pressure adjustment structure 2, which is suitable for adjusting the interaction strength between the second testing section 11 and the surface of the nylon wheel.

[0028] The fixed shaft can be referenced in Figure 1, and its fixing method can be threaded assembly, as shown in the figure. Figure 1 The inner flange shown has an internally threaded inner plate, and the outer ring of the fixed shaft 5 has an external thread. The installation position of the fixed shaft 5 can be adjusted by rotating it. The inner flange can be fixed to the side wall of the test body structure with bolts. The test body structure forms the external structure of the test chamber 1.

[0029] like Figure 2 As shown, the second testing unit 11 includes a rotatable pressure roller, a motor (not shown) for driving the pressure roller to rotate, and a limiting part (not shown) for limiting the movement of the pressure roller within a set range. The limiting part is combined with... Figure 1 and Figure 3 It can be a limiting groove opened on the inner wall of the test chamber 1, with the pressure roller and its two sides limiting the sliding within the limiting groove, such as... Figure 3The limiting groove shown is vertically arranged, so the pressure roller can only move vertically up and down during adjustment. The preferred second pressure adjustment structure 2 is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw slide, such as... Figure 3 The diagram shows a lead screw slide, where the lead screw 10 rotates to move its internal slide up and down. The pressure roller is fixedly connected to the slide, allowing the pressure roller to move vertically up and down with the slide. This type of drive structure propels the pressure roller within the restricted range of the limiting section. The applied pressure is adjusted by regulating the distance between the center of the pressure roller and the nylon wheel; the closer the distance, the greater the surface deformation of the pressure roller and the greater the force exerted on the nylon wheel, and vice versa.

[0030] In order to adjust the interaction strength between the pressure roller and the nylon wheel when the pressure roller rotates, the roller surface is made of a material with good elastic deformation ability, such as rubber. This allows for specific measurements to be taken by a pressure sensor installed inside the roller surface, thereby obtaining the pressure tolerance data of the bottom surface of the nylon wheel, which is the outermost arc surface of the nylon wheel.

[0031] The test chamber 1 has a pressure sensing structure 9 protruding around the fixing hole. The pressure sensing structure 9 is annular in shape, and the outermost diameter of the pressure sensing structure 9 is less than or equal to the maximum outer diameter of the steel core assembly. The pressure sensing structure 9 can also be a combination of a support block and a pressure sensor, which can detect the pressure exerted by the first test section 8 on the nylon wheel in real time, thus serving as a data source for pressure tolerance data. The side of the first test section 8 that contacts the side of the nylon wheel is an annular plane. The minimum inner diameter of the annular plane is greater than the maximum outer diameter of the steel core assembly and less than the maximum outer diameter of the nylon sleeve 7. The first pressure adjustment structure 6 is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw 10 slide. The hydraulic cylinder and the pneumatic cylinder can be directly connected to the corresponding first test section 8 for adjustment. The lead screw 10 slide is connected to the first test section 8, and the test position of the first test section 8 is adjusted by limiting the rotation of the slide and the rotation of the lead screw 10. The first pressure adjustment structure 6 allows the testing section to directly contact the side of the nylon wheel. By adjusting the contact pressure using the first pressure adjustment structure 6, pressure tolerance data of the nylon wheel's side surface (the two circular surfaces of the nylon wheel) can be easily obtained. With the aforementioned first testing section 8 and second testing section 11, this testing equipment can clearly test the pressure tolerance of both the roller surface and the bottom surface of the nylon wheel simultaneously, eliminating the need for replacement during the testing phase. This results in higher integration and saves installation and operation time.

[0032] During the pressure test of the fit strength between the nylon sleeve 7 and the steel core assembly in the first test section 8, the first pressure adjustment structure 6 is driven to push the first test section 8 closer to and against the pressure sensing structure 9. At this time, the pressure sensing structure 9 and the steel core assembly of the nylon wheel are in contact, while the first test section 8 and the nylon sleeve 7 are in contact. Therefore, when the first test section 8 continues to apply pressure after the steel core assembly abuts against the pressure sensing structure 9, the fit strength between the nylon sleeve and the steel core assembly can be tested. To facilitate the installation of this testing equipment, a riser frame is provided at the bottom outer side of the test chamber 1, and the riser frame has fixing holes running through it from top to bottom. For example... Figure 1 As shown, the test chamber 1 is the inner cavity of the test main structure. The bottom of the test main structure is integrally formed with a riser frame, and the test main structure can be fixed and installed by bolts or other structures through the setting of fixing holes.

[0033] The testing equipment also includes a fan 4 and an air duct 3, which are connected to the test chamber 1. The fan 4 can be turned on before testing. The fan 4 generates airflow, and when the fan 4 generates a large airflow, the flow velocity inside the test chamber 1 increases, which helps to remove dust and other impurities from the surface of the nylon wheel before testing.

[0034] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A nylon wheel pressure testing device, characterized in that, This device is used to test the strength of the side and bottom surfaces of a nylon wheel. The nylon wheel includes an outer nylon sleeve and an inner steel core assembly. The pressure testing equipment includes a test chamber and a fixing hole formed on the side of the test chamber. Various sizes of fixing shafts are detachably installed in the fixing hole. The fixing shafts are adapted to fix the nylon wheel and suspend it in the test chamber, and cooperate with the test chamber to limit the nylon wheel to the radial range of the fixing shafts throughout the test process.

2. The nylon wheel pressure testing device as described in claim 1, characterized in that, It also includes a first test section coaxially arranged with the fixed shaft, and a first pressure adjustment structure is provided on the outer side of the first test section. The first pressure adjustment structure is adapted to adjust the interaction strength between the first test section and the side of the nylon wheel.

3. The nylon wheel pressure testing equipment as described in claim 2, characterized in that, It also includes a second test section located at the top, the second test section being provided with a second pressure adjustment structure, the second pressure adjustment structure being adapted to adjust the interaction strength between the second test section and the nylon wheel surface.

4. The nylon wheel pressure testing device as described in claim 3, characterized in that, The second test unit includes a rotating pressure roller, a motor for driving the pressure roller to rotate, and a limiting part for restricting the movement of the pressure roller within a set range.

5. The nylon wheel pressure testing device as described in claim 2, characterized in that, The test chamber is provided with a pressure sensing structure protruding around the fixing hole. The pressure sensing structure is annular in shape, and the outermost outer diameter of the pressure sensing structure is less than or equal to the maximum outer diameter of the steel core assembly.

6. The nylon wheel pressure testing device as described in claim 5, characterized in that, The side of the first test section that contacts the nylon wheel is an annular plane. The minimum inner diameter of the annular plane is greater than the maximum outer diameter of the steel core assembly and less than the maximum outer diameter of the nylon sleeve.

7. The nylon wheel pressure testing device as described in claim 1, characterized in that, An extension frame is provided at the bottom of the outer side of the test chamber, and the extension frame has fixing holes running through it from top to bottom.

8. The nylon wheel pressure testing device as described in claim 2, characterized in that, The first pressure regulating structure is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw slide.

9. The nylon wheel pressure testing device as described in claim 3, characterized in that, The second pressure regulating structure is one of a hydraulic cylinder, a pneumatic cylinder, or a lead screw slide.

10. The nylon wheel pressure testing device as described in claim 1, characterized in that, It also includes a fan and an air duct, which are connected to the test chamber.

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