Chain pin shaft extrusion force detection machine and detection method

Abstract

The invention relates to the field of chain processing, and particularly discloses a chain pin shaft extrusion force detection machine and a detection method. The chain pin shaft extrusion force detector comprises a workbench, a chain conveying module and two detection modules, wherein the chain conveying module comprises a chain wheel and a rotation driving unit; the detection module comprises a detection support, a detection sliding block, a detection rotating wheel and a chain mounting unit, the detection rotating wheel is rotatably and movably connected with the detection sliding block, and the detection sliding block is arranged on the detection support; an elastic piece and a pressure detection unit are arranged between the detection sliding block and the detection support. The chain installation unit is provided with a chain channel, the detection rotating wheel is aligned with the chain channel, and the side, facing the detection chain wheel, of the chain channel is provided with an opening. A bearing protruding block is arranged on the side wall of the chain channel. According to the chain pin shaft extrusion force detection machine, pin shaft extrusion force detection operation can be efficiently completed, and the on-line continuous detection requirement of a long chain can be met.

Description

Technical Field

[0001] This invention relates to the field of chain processing, and in particular to a chain pin pressure testing machine and testing method. Background Technology

[0002] A chain is a mechanical component widely used in mechanical transmission, transportation, and other fields. It typically consists of several links, which are arranged sequentially and connected by pins to form a chain. The connection between the pin and the chain plate mainly includes riveting and interference fit. Among them, the interference fit connection requires testing the reliability of the pin connection, that is, the pin pressure test.

[0003] Chinese invention patent CN 115077896 A discloses a chain pin pressure testing device and its operating method. The device includes a base, a slide rail, a screw, a threaded seat, and a testing instrument. The slide rail is mounted on the base, and indicator blocks for indicating the position of the chain pins after unfolding are evenly spaced on the front wall of the slide rail. The screw is rotatably mounted inside the slide rail, and the testing instrument is mounted on the screw via the threaded seat. This chain pin pressure testing device can perform pin pressure testing after chain assembly, but it can only perform testing on chain segments of a specific length, making it difficult to adapt to continuous online testing during chain assembly. Furthermore, the efficiency of switching between two pins is low, failing to meet the needs of large-scale testing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a chain pin pressure testing machine and testing method, which can efficiently complete the pin pressure testing operation and meet the online continuous testing needs of long chains.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a chain pin pressure testing machine, comprising a workbench, a chain conveying module and two testing modules, wherein the chain conveying module comprises a sprocket and a rotary drive unit, the sprocket is rotatably mounted on the workbench, and the rotary drive unit is used to drive the sprocket to rotate; The detection module includes a detection bracket, a detection slider, a detection wheel, and a chain mounting unit. The detection wheel and the detection slider are rotatably connected. The detection slider is slidably mounted on the detection bracket, and the sliding direction of the detection slider is perpendicular to the rotation center line of the detection wheel. An elastic element and a pressure detection unit are provided between the detection slider and the detection bracket. The chain mounting unit is provided with a chain channel, which extends perpendicular to the center line of the detection wheel and the sliding direction of the detection slider, and the chain channel extends through the chain mounting unit along the extension direction; the detection wheel is aligned with the chain channel, and the chain channel is open on the side facing the detection wheel; the side wall of the chain channel is provided with a bearing protrusion; the chain channels of the two detection modules are aligned, and the bearing protrusions in the two detection modules are set at different heights in the chain channel.

[0006] During testing, the chain to be tested passes sequentially through the chain channels of two testing modules and engages with the sprockets. When the sprockets rotate, the chain can feed along the chain channels. The testing wheel is pre-pressed onto the chain under the pressure of the elastic element, and together with the bearing protrusion, it presses the chain firmly. As the chain feeds, it drives the testing wheel to rotate. When the pin passes the testing wheel, the elastic force of the elastic element acts on the pin. The pressure detection unit's readings determine whether the pin's pressing force is up to standard.

[0007] Compared with existing methods for detecting the pressure of chain pins, the chain pin pressure testing machine of this application can achieve continuous online testing of the chain, with reliable and efficient results. Furthermore, through the cooperation of two testing modules, the pressure of the pin relative to the upper and lower chain plates can be tested sequentially, resulting in a more comprehensive test.

[0008] Preferably, the rotation center of the sprocket is set perpendicular to the worktable, and the rotation drive unit includes a motor disposed below the worktable.

[0009] Preferably, the chain conveying module further includes a stop block, which is arranged around the sprocket, and a conveying interval is formed between the stop block and the sprocket. The inlet end of the conveying interval is aligned with the chain channel, and the outlet end is provided with a discharge guide component.

[0010] The chain conveyor module can drive the chain under test to feed smoothly and continuously, so as to ensure the reliable and stable detection of pin pressure output.

[0011] Preferably, the detection bracket includes an upper mounting block, a lower mounting block, and a support plate. The upper mounting block and the lower mounting block are arranged opposite to each other, the support plate is arranged between the upper mounting block and the lower mounting block, the lower mounting block is connected to the worktable, and the support plate is arranged perpendicular to the worktable. The side of the support plate is provided with a limiting guide rail, and the detection slider is connected to the support plate through the limiting guide rail; the elastic element and the pressure detection unit are arranged between the detection slider and the upper mounting block.

[0012] Preferably, a displacement detection component is provided between the detection slider and the detection bracket. The displacement detection component includes a photoelectric sensor and a sensing block. One of the photoelectric sensor and the sensing block is disposed on the detection slider, and the other is disposed on the support plate.

[0013] Because the end of the pin protrudes from the chain plate, meaning there is a certain amount of protrusion relative to the chain plate, the detection wheel moves up and down when the pin passes through it. By detecting the displacement of the detection wheel, the pressing force of the pin can be evaluated from another perspective, and the amount of protrusion can also be detected, further assessing the assembly quality of the pin.

[0014] Preferably, the detection wheel has a loading groove on its circumference, the loading groove extends circumferentially around the rotation center line of the detection wheel, and the bottom surface of the loading groove is a loading surface.

[0015] The loading groove can better cooperate with the pin set at the protrusion, which can not only improve the cooperation between the detection transfer and the chain, but also reduce the vertical movement range of the detection wheel when the pin passes through it, thereby reducing the response time of the detection wheel and improving the reliability of the detection results.

[0016] Preferably, the chain mounting unit includes two limiting blocks, which are arranged in parallel and detachably connected to the workbench, forming a chain channel between the two limiting blocks.

[0017] The limit blocks can be selected reasonably according to the model and specifications of the chain, and the relative positions of the two limit blocks can be adjusted to improve the flexibility of the detection.

[0018] Preferably, the inner sides of the two limiting blocks are provided with guide ribs, and the guide ribs of the two limiting blocks are positioned opposite each other.

[0019] The guide ribs correspond to the area between the upper and lower chain plates, and can be used to limit the movement of the chain and guide its direction of movement.

[0020] Preferably, the guide rib of one detection module is used as a bearing protrusion, and the guide rib of the other detection module is set above the corresponding bearing protrusion, forming a chain plate insertion interval between the two. A method for detecting the pressure output of a chain pin, using the chain pin pressure output testing machine as described above; At least the following steps are included: S1. Installation: Pass the chain to be tested through the chain channels of the two testing modules in sequence with the pin perpendicular to the axis of the testing wheel, and engage with the sprocket. The upper chain plate of the chain to be tested is placed on the bearing protrusion of one of the testing modules, and the lower chain plate is placed on the bearing protrusion of the other testing module. The testing wheel is pre-pressed on the chain to be tested. S2. Inspection: The rotary drive unit operates, driving the sprocket to rotate and causing the chain to be inspected to feed along the chain channel. The pins of the chain to be inspected pass through the inspection wheel in sequence. The inspection wheel applies pressure to the pins. The pressure detection unit determines whether the pressure output of the corresponding pin is qualified. The two inspection modules are used to inspect the pressure output of the pins to the upper and lower chain plates, respectively. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the chain pin pressure testing machine in this embodiment; Figure 2 This is a top view of the chain pin pressure testing machine of this embodiment; Figure 3 This is a schematic diagram of the detection module in the chain pin pressure testing machine of this embodiment; Figure 4 This is a schematic diagram of the cooperation between the detection bracket and the detection slider in the chain pin pressure testing machine of this embodiment; Figure 5 This is a side sectional view of the detection module in the chain pin pressure testing machine of this embodiment; Figure 6 This is a schematic diagram of the chain pin pressure testing machine in this embodiment, showing the state in which the testing wheel and the chain mounting unit jointly press the chain together. The guide rib is located above the bearing protrusion. Figure 7 This is a schematic diagram of the chain pin pressure testing machine in this embodiment, showing the state in which the testing wheel and the chain mounting unit jointly press the chain. The guide ribs are used as load-bearing protrusions. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example

[0023] like Figure 1 As shown, a chain pin pressure testing machine includes a worktable 1, a chain conveying module 2, and two testing modules 4.

[0024] like Figure 1 and Figure 2As shown, the chain conveying module 2 includes a sprocket 22 and a rotary drive unit 21. The sprocket 22 is rotatably mounted on the worktable 1, and the rotary drive unit 21 drives the sprocket 22 to rotate. Specifically, the rotation center of the sprocket 22 is perpendicular to the worktable 1, and the rotary drive unit 21 includes a motor mounted below the worktable 1.

[0025] like Figure 1 and Figure 2 As shown, the chain conveying module 2 further includes a stop block 23, which is arranged around the sprocket 22, forming a conveying interval between the stop block 23 and the sprocket 22. The inlet end of the conveying interval is aligned with the chain channel 422, and the outlet end is provided with a discharge guide component. The chain conveying module 2 can drive the chain to be tested to feed smoothly and continuously, so as to ensure the reliable and stable detection of pin shaft pressure.

[0026] like Figures 3-5 As shown, the detection module 4 includes a detection bracket 41, a detection slider 46, a detection wheel 43, and a chain mounting unit 42. The detection wheel 43 is rotatably connected to the detection slider 46. The detection slider 46 is slidably disposed on the detection bracket 41, and the sliding direction of the detection slider 46 is perpendicular to the rotation center line of the detection wheel 43.

[0027] like Figures 3-5 As shown, specifically, the detection bracket 41 includes an upper mounting block 411, a lower mounting block 413, and a support plate 412. The upper mounting block 411 and the lower mounting block 413 are arranged opposite to each other, and the support plate 412 is disposed between the upper mounting block 411 and the lower mounting block 413. The lower mounting block 413 is connected to the worktable 1, and the support plate 412 is arranged perpendicular to the worktable 1. A limiting guide rail is provided on the side of the support plate 412, and the detection slider 46 is connected to the support plate 412 through the limiting guide rail.

[0028] Specifically, such as Figure 3 , Figure 6 and Figure 7 As shown, the detection wheel 43 has a loading groove 431 on its circumferential surface. The loading groove 431 extends circumferentially around the rotation center line of the detection wheel 43, and the bottom surface of the loading groove 431 is the loading surface. The loading groove 431 can better cooperate with the exposed pin, which not only improves the cooperation between the detection transport and the chain, but also reduces the vertical movement range of the detection wheel 43 when the pin passes through it, thus reducing the response time of the detection wheel 43 and improving the reliability of the detection results.

[0029] like Figures 3-5As shown, an elastic element 45 and a pressure detection unit 44 are provided between the detection slider 46 and the detection bracket 41. The elastic element 45 and the pressure detection unit 44 are disposed between the detection slider 46 and the upper mounting block 411.

[0030] Furthermore, such as Figure 3 and Figure 4 As shown, a displacement detection component 47 is also provided between the detection slider 46 and the detection bracket 41. The displacement detection component 47 includes a photoelectric sensor and a sensing block. One of the photoelectric sensor and the sensing block is disposed on the detection slider 46, and the other is disposed on the support plate 412. Since the end of the pin protrudes from the chain plate, that is, the pin has a certain amount of protrusion relative to the chain plate, the detection wheel 43 moves up and down when the pin passes through it. By detecting the displacement of the detection wheel 43, the pressing force of the pin can be evaluated from another angle, and the amount of protrusion of the pin can also be detected to further evaluate the assembly quality of the pin.

[0031] like Figures 5-7 As shown, the chain mounting unit 42 is provided with a chain channel 422. The chain channel 422 extends along the sliding direction perpendicular to the center line of the detection wheel 43 and the detection slider 46, and the chain channel 422 extends through the chain mounting unit 42 along the extending direction. The detection wheel 43 is aligned with the chain channel 422, and the chain channel 422 has an opening on the side facing the detection sprocket 22.

[0032] like Figures 5-7 As shown, specifically, the chain mounting unit 42 includes two limiting blocks 421, which are arranged in parallel and detachably connected to the workbench 1, forming a chain channel 422 between the two limiting blocks 421. The limiting blocks 421 can be selected appropriately according to the chain's model and specifications, and the relative positions of the two limiting blocks 421 can be adjusted to improve the flexibility of the inspection.

[0033] like Figure 6 and Figure 7 As shown, the sidewall of the chain channel 422 is provided with a bearing protrusion 424. The chain channels 422 of the two detection modules 4 are aligned, and the bearing protrusions 424 in the two detection modules 4 are set at different heights in the chain channel 422.

[0034] like Figure 6 and Figure 7 As shown, specifically, guide ribs 423 are provided on the inner sides of the two limiting blocks 421, and the guide ribs 423 of the two limiting blocks 421 are positioned opposite each other. Figure 7 As shown, the guide rib 423 of one of the detection modules 4 is used as a bearing protrusion 424, as... Figure 6 As shown, the guide rib 423 of another detection module 4 is disposed above the corresponding bearing protrusion 424, and forms a chain plate insertion interval between the corresponding bearing protrusion 424.

[0035] During testing, the chain 3 to be tested passes sequentially through the chain channels 422 of the two testing modules 4 and engages with the sprocket 22. When the sprocket 22 rotates, the chain can feed along the chain channel 422. The testing wheel 43 is pre-pressed onto the chain under the pressure of the elastic element 45 and, together with the bearing protrusion 424, presses the chain tightly. During the chain's feeding movement, the chain drives the testing wheel 43 to rotate. When the pin 31 passes the testing wheel 43, the elastic force of the elastic element 45 acts on the pin 31. The pressure value detected by the pressure testing unit 44 can determine whether the pressing force of the pin 31 is qualified.

[0036] Compared with existing methods for detecting the pressure of chain pins, the chain pin pressure testing machine of this application can achieve continuous online testing of the chain, with reliable and efficient results. Furthermore, through the cooperation of two testing modules 4, the pressure of the pin relative to the upper and lower chain plates can be tested sequentially, resulting in a more comprehensive test. A method for detecting the pressure output of a chain pin, using the chain pin pressure output testing machine as described above; At least the following steps are included: S1. Installation: The chain to be tested is passed sequentially through the chain channels 422 of the two testing modules 4 with the pin perpendicular to the axis of the testing wheel 43, and engages with the sprocket 22. The upper chain plate of the chain to be tested is placed on the bearing protrusion 424 of one of the testing modules 4, and the lower chain plate is placed on the bearing protrusion 424 of the other testing module 4. The testing wheel 43 is pre-pressed on the chain to be tested.

[0037] S2. Detection: The rotary drive unit 21 operates, driving the sprocket 22 to rotate and causing the chain to be tested to feed along the chain channel 422. The pins of the chain to be tested pass through the detection wheel 43 in sequence. The detection wheel 43 applies pressure to the pins, and the pressure detection unit 44 determines whether the pressing force of the corresponding pin is qualified. The two detection modules 4 are used to detect the pressing force between the pin and the upper and lower chain plates, respectively.

[0038] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chain pin pressure testing machine, characterized in that: It includes a workbench, a chain conveying module, and two detection modules. The chain conveying module includes a sprocket and a rotary drive unit. The sprocket is rotatably mounted on the workbench, and the rotary drive unit is used to drive the sprocket to rotate. The detection module includes a detection bracket, a detection slider, a detection wheel, and a chain mounting unit. The detection wheel and the detection slider are rotatably connected. The detection slider is slidably mounted on the detection bracket, and the sliding direction of the detection slider is perpendicular to the rotation center line of the detection wheel. An elastic element and a pressure detection unit are provided between the detection slider and the detection bracket. The chain mounting unit is provided with a chain channel, which extends perpendicular to the center line of the detection wheel and the sliding direction of the detection slider, and the chain channel extends through the chain mounting unit along the extension direction; the detection wheel is aligned with the chain channel, and the chain channel is open on the side facing the detection wheel; the side wall of the chain channel is provided with a bearing protrusion; the chain channels of the two detection modules are aligned, and the bearing protrusions in the two detection modules are set at different heights in the chain channel.

2. The chain pin pressure testing machine according to claim 1, characterized in that: The rotation center of the sprocket is set perpendicular to the worktable, and the rotation drive unit includes a motor located below the worktable.

3. The chain pin pressure testing machine according to claim 1, characterized in that: The chain conveying module also includes a stop block, which is arranged around the sprocket. The stop block and the sprocket form a conveying interval. The inlet end of the conveying interval is aligned with the chain channel, and the outlet end is provided with a discharge guide component.

4. The chain pin pressure testing machine according to claim 1, characterized in that: The detection bracket includes an upper mounting block, a lower mounting block, and a support plate. The upper mounting block and the lower mounting block are arranged opposite to each other, and the support plate is arranged between the upper mounting block and the lower mounting block. The lower mounting block is connected to the worktable, and the support plate is arranged perpendicular to the worktable. The side of the support plate is provided with a limiting guide rail, and the detection slider is connected to the support plate through the limiting guide rail; the elastic element and the pressure detection unit are arranged between the detection slider and the upper mounting block.

5. The chain pin pressure testing machine according to claim 4, characterized in that: A displacement detection component is also provided between the detection slider and the detection bracket. The displacement detection component includes a photoelectric sensor and a sensing block. One of the photoelectric sensor and the sensing block is set on the detection slider, and the other is set on the support plate.

6. The chain pin pressure testing machine according to claim 1, characterized in that: The detection wheel has a loading groove on its circumference, which extends circumferentially around the rotation center line of the detection wheel, and the bottom surface of the loading groove is the loading surface.

7. The chain pin pressure testing machine according to any one of claims 1-6, characterized in that: The chain installation unit includes two limiting blocks, which are arranged in parallel and detachably connected to the worktable, forming a chain channel between the two limiting blocks.

8. The chain pin pressure testing machine according to claim 7, characterized in that: The inner sides of the two limiting blocks are respectively provided with guide ribs, and the guide ribs of the two limiting blocks are positioned opposite each other.

9. The chain pin pressure testing machine according to claim 8, characterized in that: One of the detection modules uses its guide rib as a bearing protrusion, while the other detection module's guide rib is positioned above the corresponding bearing protrusion and forms a chain plate insertion interval with the corresponding bearing protrusion.

10. A method for detecting the pressing force of a chain pin, characterized in that: The chain pin pressure testing machine as described in any one of claims 1-9 is adopted; At least the following steps are included: S1. Installation: Pass the chain to be tested through the chain channels of the two testing modules in sequence with the pin perpendicular to the axis of the testing wheel, and engage with the sprocket. The upper chain plate of the chain to be tested is placed on the bearing protrusion of one of the testing modules, and the lower chain plate is placed on the bearing protrusion of the other testing module. The testing wheel is pre-pressed on the chain to be tested. S2. Inspection: The rotary drive unit operates, driving the sprocket to rotate and causing the chain to be inspected to feed along the chain channel. The pins of the chain to be inspected pass through the inspection wheel in sequence. The inspection wheel applies pressure to the pins. The pressure detection unit determines whether the pressure output of the corresponding pin is qualified. The two inspection modules are used to inspect the pressure output of the pins to the upper and lower chain plates, respectively.

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