Long-pitch chain wear detection apparatus and method

Abstract

The embodiment of the application provides a long-pitch chain wear detection device and method, and relates to the technical field of chain detection.The long-pitch chain wear detection device comprises a detection platform, a fixed clamp, a movable clamp, a tensioning device, a pressure device and a displacement sensor, the fixed clamp is fixedly arranged on the detection platform and is used for clamping a first chain link, the movable clamp is slidably arranged on the detection platform and is used for clamping a third chain link, the tensioning device is arranged on the detection platform and is connected with the movable clamp, and the tensioning device is used for driving the movable clamp to move so as to apply a tensioning force to the long-pitch chain, the pressure device is arranged in a spaced mode with the detection platform, is used for reciprocating up and down, and applies a pressure to a second chain link, and the displacement sensor is arranged on the detection platform and is used for detecting the elongation of the long-pitch chain after testing.The long-pitch chain test cycle can be shortened, the test process is highly consistent with the actual working condition, the test result accuracy is improved, the occupied area is reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of chain testing technology, and more specifically, to a device and method for testing wear on long-pitch chains. Background Technology

[0002] As a key transmission component, chains possess advantages such as smooth transmission, a wide range of center distances, strong impact resistance, high efficiency, and adaptability to harsh environments, making them widely used in various fields, including construction machinery, metallurgy, aerospace, automotive, and agricultural machinery. However, in practical applications, wear will occur in the chain's hinge pairs, affecting its service life. Therefore, it is necessary to conduct wear testing on the chain to ensure it reaches its expected lifespan during use.

[0003] Given the specific characteristics of different industries, chain specifications and types vary. For wear testing of short-pitch chains, a simulated rotary test bench can be constructed based on actual working conditions to assess the wear of the chain hinge pairs through continuous high-speed operation. However, for long-pitch chains, due to their longer pitch, rotary testing presents challenges such as large equipment footprint, high investment costs, and long testing cycles. Furthermore, existing testing equipment cannot accurately reflect the wear condition of the chain under actual working conditions, resulting in low accuracy of test results. Summary of the Invention

[0004] The purpose of this invention is to provide a long-pitch chain wear detection device and method, which can shorten the test cycle of long-pitch chains, the test process has a high degree of consistency with actual working conditions, improve the accuracy of test results, and reduce the floor space and investment costs.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In a first aspect, the present invention provides a long-pitch chain wear detection device for detecting wear on long-pitch chains, wherein the long-pitch chain includes a first link, a second link, and a third link connected in sequence; the long-pitch chain wear detection device includes:

[0007] Testing platform;

[0008] A fixing clamp is fixed to the detection platform and is used to clamp the first chain link;

[0009] A movable clamp is slidably disposed on the detection platform and spaced apart from the fixed clamp. The movable clamp is used to hold the third link.

[0010] The tensioning device is disposed on the detection platform and located on the side of the movable clamp away from the fixed clamp. The tensioning device is connected to the movable clamp and is used to drive the movable clamp to move so as to apply tension to the long pitch chain.

[0011] A pressure device, spaced apart from the detection platform and used for reciprocating motion, applies pressure to the second link of the chain to cause the long-pitch chain to reciprocate up and down; and

[0012] A displacement sensor is disposed on the detection platform and is used to detect the elongation of the long-pitch chain after the test.

[0013] In an optional embodiment, the fixing fixture includes a fixing base, a first chuck, a first connecting shaft, and a second connecting shaft. The fixing base is fixed to the detection platform, and the first chuck is disposed on the fixing base and has a first clamping groove.

[0014] The first connecting shaft passes through the first chuck and extends into the first clamping groove, and the second connecting shaft passes through the first chuck and extends into the first clamping groove. The second connecting shaft is arranged opposite to the first connecting shaft.

[0015] The first clamping groove is used to install the first chain link, the first connecting shaft is located at one end of the first clamping groove and is used to extend into the sleeve of the first chain link, and the second connecting shaft is located at one end of the first clamping groove and is used to extend into the sleeve of the first chain link.

[0016] In an optional embodiment, one end of the first connecting shaft is provided with a first connecting portion, the first connecting portion being located within the first clamping groove, the first connecting portion being frustum-shaped, and the diameter of the first connecting portion gradually decreasing towards the second connecting shaft; and / or,

[0017] One end of the second connecting shaft is provided with a second connecting part, which is located in the first clamping groove. The second connecting part is shaped like a frustum, and its diameter gradually decreases towards the first connecting shaft.

[0018] In an optional embodiment, the movable clamp includes a movable seat, a second chuck, a third connecting shaft, and a fourth connecting shaft. The movable seat is slidably disposed on the detection platform, the second chuck is disposed on the movable seat and has a second clamping groove, and the second chuck is connected to the tensioning device.

[0019] The third connecting shaft passes through the second chuck and extends into the second clamping groove, and the fourth connecting shaft passes through the second chuck and extends into the second clamping groove. The fourth connecting shaft is arranged opposite to the third connecting shaft.

[0020] The second clamping groove is used to install the third link, one end of the third connecting shaft located in the second clamping groove is used to extend into the sleeve of the third link, and one end of the fourth connecting shaft located in the second clamping groove is used to extend into the sleeve of the third link.

[0021] In an optional embodiment, one end of the third connecting shaft is provided with a third connecting portion, the third connecting portion is located within the second clamping groove, the third connecting portion is frustum-shaped, and the diameter of the third connecting portion gradually decreases towards the fourth connecting shaft; and / or,

[0022] One end of the fourth connecting shaft is provided with a fourth connecting part, which is located in the second clamping groove. The fourth connecting part is shaped like a frustum, and its diameter gradually decreases towards the third connecting shaft.

[0023] In an optional embodiment, the pressure device includes a mounting plate, a pressure mechanism, a pressure sensor, and a pressure head. The mounting plate is spaced apart from the detection platform. The pressure mechanism is slidably mounted on the mounting plate and located on the side of the mounting plate closer to the detection platform. The pressure sensor is mounted on the pressure mechanism, and the pressure head is connected to the pressure mechanism and located on the side of the pressure mechanism closer to the detection platform.

[0024] In an optional embodiment, the pressure device further includes a fixing plate and a plurality of clamping components, the fixing plate being disposed on the side of the mounting plate near the detection platform, and the pressure mechanism being slidably disposed on the fixing plate;

[0025] The plurality of clamping components are spaced apart on the side of the mounting plate near the detection platform, and the plurality of clamping components are used to abut against the fixing plate to clamp and fix the fixing plate to the mounting plate.

[0026] In an optional embodiment, the clamping assembly includes a first fastener, a second fastener, and a clamping block. The first fastener is fixed to the mounting plate, one end of the clamping block is rotatably connected to the first fastener, the other end of the clamping block abuts against the fixed plate, and the clamping block has an oblong hole, through which the second fastener passes.

[0027] The mounting plate has a sliding groove, one end of the second fastener is disposed on the pressure block, and the other end of the second fastener is disposed in the sliding groove.

[0028] In an optional embodiment, the tensioning device includes a tensioning mechanism and a tension sensor. The tensioning mechanism is disposed on the detection platform and is located on the side of the movable clamp away from the fixed clamp. The tension sensor is disposed between the movable clamp and the tensioning mechanism, and the movable clamp, the tension sensor, and the tensioning mechanism are connected sequentially; and / or,

[0029] The long-pitch chain wear detection device also includes a temperature sensor, which is installed on the detection platform and used to detect the pin temperature of the long-pitch chain.

[0030] Secondly, the present invention provides a method for detecting wear on long-pitch chains, implemented using the long-pitch chain wear detection equipment described in any of the foregoing embodiments, wherein the long-pitch chain wear detection method includes:

[0031] The first link is fixed to the fixed clamp, and the third link is fixed to the movable clamp;

[0032] The tensioning device is operated to drive the movable clamp to move, thereby applying tension to the long-pitch chain;

[0033] The pressure device is operated to reciprocate up and down, and pressure is applied to the second chain link to cause the long pitch chain to reciprocate up and down;

[0034] The displacement sensor is operated to detect the elongation of the long-pitch chain after the test, and the elongation rate is calculated based on the elongation.

[0035] If the elongation rate is less than or equal to the preset elongation rate, the long-pitch chain is deemed qualified; if the elongation rate is greater than the preset elongation rate, the long-pitch chain is deemed unqualified.

[0036] The beneficial effects of the embodiments of the present invention include:

[0037] The long-pitch chain wear testing equipment is used to test the wear of long-pitch chains. It includes a testing platform, a fixed clamp, a movable clamp, a tensioning device, a pressure device, and a displacement sensor. The fixed clamp is fixed to the testing platform and is used to clamp the first chain link. The movable clamp is slidably mounted on the testing platform and spaced apart from the fixed clamp; the movable clamp is used to clamp the third chain link. The tensioning device is located on the testing platform, on the side of the movable clamp away from the fixed clamp. The tensioning device is connected to the movable clamp and is used to drive the movable clamp to move, thereby applying tension to the long-pitch chain. The pressure device is spaced apart from the testing platform and is used for reciprocating motion, applying pressure to the second chain link to cause the long-pitch chain to reciprocate up and down. The displacement sensor is located on the testing platform and is used to detect the elongation of the long-pitch chain after the test.

[0038] In other words, by driving the movable clamp to move through the tensioning device, the third link of the chain can be moved, thereby tensioning the long-pitch chain and applying tension force to simulate the tensile force experienced by the chain during actual use. Then, a pressure device moves towards the second link to apply pressure. The second link moves downward under pressure, and then moves upward under the tension force when the pressure device moves in the opposite direction. In this reciprocating motion of the pressure device moving downward to apply pressure and upward to remove pressure, the long-pitch chain also reciprocates up and down, simulating the chain's operation after meshing with the sprocket during actual use. This causes the chain links to rotate back and forth within a certain angle range, thus realizing the wear test of the chain link hinge pair. After the test, the elongation of the worn long-pitch chain is detected by a displacement sensor. The elongation rate is then calculated based on the elongation and compared with a pre-set elongation rate to determine whether the long-pitch chain is qualified.

[0039] As is easily understood, this long-pitch chain wear testing equipment can perform wear testing on chains with three links. The equipment has a small overall footprint, which can reduce investment costs. Furthermore, it eliminates the need to use a rotation test to test a large number of links, thus shortening the testing cycle for long-pitch chains. At the same time, it can accurately simulate the working conditions of the chain during actual use, and the test process has a high degree of consistency with the actual working conditions, thereby improving the accuracy of the test results.

[0040] The long-pitch chain wear detection method is implemented using long-pitch chain wear detection equipment, and it has all the beneficial effects of such equipment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a long-pitch chain wear detection device provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of a long-pitch chain provided in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the assembly of a long-pitch chain wear detection device and a long-pitch chain provided in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the structure of the fixing clamp provided in an embodiment of the present invention;

[0046] Figure 5 An exploded view of the fixing clamp provided in an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the structure of the movable clamp provided in an embodiment of the present invention;

[0048] Figure 7 An exploded view of the movable clamp provided in an embodiment of the present invention;

[0049] Figure 8 This is a schematic diagram of the pressure device provided in an embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram of the structure of the clamping assembly provided in an embodiment of the present invention;

[0051] Figure 10 This is a flowchart illustrating the long-pitch chain wear detection method provided in an embodiment of the present invention.

[0052] Icons: 100-Long pitch chain wear detection equipment; 10-Detection platform; 11-First slide rail; 20-Fixing clamp; 21-Fixing seat; 22-First chuck; 221-First clamping groove; 222-First fixing part; 223-First clamping part; 224-Second clamping part; 23-First connecting shaft; 231-First connecting part; 24-Second connecting shaft; 242-Second connecting part; 25-First bearing; 26-Second bearing; 27-First bushing; 28-Second bushing; 29-First sealing plate; 30-Modible clamp; 31-Modible seat; 32-Second chuck; 321-Second clamping groove; 322-Second fixing part; 323-Third clamping part; 324-Fourth clamping part; 33-Third connecting shaft; 331 - Third connecting part; 34- Fourth connecting shaft; 341- Fourth connecting part; 35- Third bearing; 36- Fourth bearing; 37- Third bushing; 38- Fourth bushing; 39- Second sealing plate; 40- Tensioning device; 41- Tensioning mechanism; 42- Tension sensor; 50- Pressure device; 51- Mounting plate; 511- Slide groove; 52- Pressure mechanism; 53- Pressure sensor; 54- Pressure head; 55- Fixing plate; 551- Second slide rail; 56- Pressing assembly; 561- First fastener; 562- Second fastener; 563- Pressure block; 5631- Waist-shaped hole; 60- Displacement sensor; 70- Temperature sensor; 200- Long pitch chain; 201- First link; 202- Second link; 203- Third link. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0056] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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 therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0057] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0059] As described in the background section, wear occurs in the hinge pairs of chains during practical applications, affecting their service life. Therefore, wear testing of chains is necessary to ensure they reach their expected lifespan during use. Due to the specificities of different industries, chain specifications and types vary. For wear testing of short-pitch chains, a simulated rotary test bench can be constructed based on actual working conditions, evaluating the wear of the chain hinge pairs through continuous high-speed operation. However, for long-pitch chains, due to their longer pitch, rotary testing presents challenges such as large equipment footprint, high investment costs, and long testing cycles. Furthermore, existing testing equipment cannot accurately reflect the wear condition of the chain under actual working conditions, resulting in low accuracy of test results.

[0060] Based on this, please refer to Figures 1-10The present invention provides a long-pitch chain wear detection device 100 and method, which can effectively improve the aforementioned technical problems. Specifically, it can shorten the test cycle of long-pitch chains, the test process closely matches actual working conditions, improve the accuracy of test results, and reduce the floor space and investment costs. The long-pitch chain wear detection device 100 and method will be described in detail below.

[0061] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the long-pitch chain wear detection device 100 provided in this embodiment. Figure 2 This is a structural schematic diagram of the long-pitch chain 200 provided in this embodiment, combined with... Figure 1 and Figure 2 The long pitch chain wear detection device 100 is used to detect wear on a long pitch chain 200. The long pitch chain 200 includes a first link 201, a second link 202, and a third link 203 connected in sequence. The long pitch chain wear detection device 100 can shorten the test cycle of the long pitch chain 200, and the test process has a high degree of consistency with the actual working conditions.

[0062] Further, please refer to Figure 3 , Figure 3 This is an assembly diagram of the long-pitch chain wear detection device 100 and the long-pitch chain 200 provided in this embodiment, combined with... Figures 1-3 The long-pitch chain wear detection device 100 includes a detection platform 10, a fixed clamp 20, a movable clamp 30, a tensioning device 40, a pressure device 50, and a displacement sensor 60. The fixed clamp 20 is fixed to the detection platform 10 and is used to clamp the first chain link 201. The movable clamp 30 is slidably disposed on the detection platform 10 and spaced apart from the fixed clamp 20. The movable clamp 30 is used to clamp the third chain link 203. The tensioning device 40 is disposed on the detection platform 10 and is located at the position of the movable clamp 50. The movable clamp 30 is located away from the fixed clamp 20. The tensioning device 40 is connected to the movable clamp 30 and is used to drive the movable clamp 30 to move so as to apply tension to the long pitch chain 200. The pressure device 50 is spaced apart from the detection platform 10 and is used for reciprocating up and down movement, and applies pressure to the second link 202 so as to make the long pitch chain 200 reciprocate up and down. The displacement sensor 60 is set on the detection platform 10 and is used to detect the elongation of the long pitch chain 200 after the test.

[0063] In other words, by driving the movable clamp 30 to move through the tensioning device 40, the third link 203 can be moved, thereby tensioning the long-pitch chain 200 and applying tension force to simulate the tension experienced by the chain during actual use. Then, the pressure device 50 moves towards the second link 202 to apply pressure. After being subjected to pressure, the second link 202 moves downward. Then, when the pressure device 50 moves in the opposite direction, the second link 202 moves upward under the action of tension force. In this way, during the reciprocating motion of the pressure device 50 continuously moving downward to apply pressure and moving upward to remove pressure, the long-pitch chain 200 also reciprocates up and down, which can simulate the operation of the chain after meshing with the sprocket during actual use, so that the chain link reciprocates within a certain angle range, thereby realizing the wear test of the chain link hinge pair. After the test, the elongation of the worn long-pitch chain 200 is detected by displacement sensor 60. Then, the elongation rate is calculated based on the elongation and compared with the pre-set elongation rate that needs to be met to determine whether the long-pitch chain 200 is qualified.

[0064] As is easily understood, the long-pitch chain wear detection device 100 can perform wear detection on chains with three links. The device has a small overall footprint, which can reduce investment costs. Furthermore, it eliminates the need to use a rotation test to test a large number of links, thus shortening the test cycle of the long-pitch chain 200. At the same time, it can accurately simulate the working conditions of the chain in actual use, and the test process has a high degree of consistency with the actual working conditions, thereby improving the accuracy of the test results.

[0065] It should be noted that throughout the entire wear test, the tensioning device 40 continuously provides tension to the chain, and the tensioning device 40 has a certain degree of elasticity (the tensioning device 40 can be driven by a spring or hydraulic machinery). This allows the second link 202 to move downwards after being subjected to pressure. That is, after the pressure device 50 moves downwards to apply pressure to the second link 202, the movable clamp 30 will move towards the fixed clamp 20, so that the chain can achieve up-and-down reciprocating motion, and the link can rotate back and forth within a certain angle range, ensuring that the link hinge pair is subjected to a certain amount of frictional wear.

[0066] Additionally, it should be noted that the elongation rate mentioned above is the ratio of the elongation measured by the displacement sensor 60 after the wear test to the length of the chain before the test. This ratio needs to be controlled within the preset elongation rate range. If the actual calculated elongation rate is less than or equal to the preset elongation rate, the chain can be judged as qualified; otherwise, it is unqualified.

[0067] Due to the different specifications and dimensions of long pitch chains, the corresponding operating conditions are also different. Therefore, the specific values of the applied tension and pressure need to be determined according to the actual situation of the chain. Moreover, the number of reciprocating movements of the chain up and down, corresponding to the number of reciprocating downward movements of the pressure device 50, also needs to be calculated based on the service life of the chain to cooperate with the corresponding wear test. For example, a certain chain has a pitch of 100 mm, a service life of 18 years, and a set elongation rate to be satisfied of 3%. Through the above parameter calculation, it is obtained that the chain needs to rotate reciprocally 1 million times. Then, set the tension and pressure that conform to the actual working conditions, and operate the pressure device 50 to reciprocate up and down, so that after the chain rotates reciprocally 1 million times, measure and calculate the elongation rate of the chain. If the elongation rate is less than or equal to 3%, then it is determined that the chain is qualified.

[0068] Please continue to combine Figure 1 , the tensioning device 40 includes a tensioning mechanism 41 and a tension sensor 42. The tensioning mechanism 41 is arranged on the detection platform 10, and the tensioning mechanism 41 is located on the side of the movable clamp 30 away from the fixed clamp 20. The tension sensor 42 is arranged between the movable clamp 30 and the tensioning mechanism 41, and the movable clamp 30, the tension sensor 42, and the tensioning mechanism 41 are connected in sequence.

[0069] It can be understood that by driving the tension sensor 42 to move through the tensioning mechanism 41, the movable clamp 30 is thus带动 to move, so as to achieve the tensioning effect on the chain. Moreover, by setting the tension sensor 42, the magnitude of the tension can be detected and controlled in real time to ensure the accuracy of the test.

[0070] It should be noted that after the hinge pair of the chain is worn, the temperature of the chain pin shaft will rise. Therefore, in order to monitor the temperature of the pin shaft, the long pitch chain wear detection device 100 further includes a temperature sensor 70. The temperature sensor 70 is arranged on the detection platform 10 and is used to detect the pin shaft temperature of the long pitch chain 200. By setting the temperature sensor 70, the temperature of the chain pin shaft can be detected in real time, avoiding the sudden rise of the pin shaft temperature during the wear test. Moreover, according to the real-time detected temperature rise situation, the values of the pressure and tension can be adjusted in real time, as well as the rate of the reciprocating movement up and down of the pressure device 50, ensuring that the chain undergoes the wear test under suitable working conditions. In addition, the real-time recorded temperature situation can also be statistically analyzed together with other parameters detected during the test to analyze the wear test situation of the chain, thereby further improving the accuracy of the test results.

[0071] Please refer to Figure 4 Figure 4 is a schematic structural diagram of the fixed clamp 20 provided in this embodiment. Combine Figure 1 , Figure 2 and Figure 4Specifically, the fixing fixture 20 includes a fixing base 21, a first chuck 22, a first connecting shaft 23, and a second connecting shaft 24. The fixing base 21 is fixed to the detection platform 10. The first chuck 22 is disposed on the fixing base 21 and has a first clamping groove 221. The first connecting shaft 23 passes through the first chuck 22 and extends into the first clamping groove 221. The second connecting shaft 24 passes through the first chuck 22 and extends into the first clamping groove 221. The second connecting shaft 24 is arranged opposite to the first connecting shaft 23. The first clamping groove 221 is used to install the first chain link 201. One end of the first connecting shaft 23 in the first clamping groove 221 is used to extend into the sleeve of the first chain link 201. The other end of the second connecting shaft 24 in the first clamping groove 221 is used to extend into the sleeve of the first chain link 201. That is to say, after the first chain link 201 is installed in the first clamping groove 221, it can be fixed by the first connecting shaft 23 and the second connecting shaft 24.

[0072] To facilitate the connection and fixation of the first connecting shaft 23, the second connecting shaft 24, and the first link 201, in this embodiment, one end of the first connecting shaft 23 is provided with a first connecting portion 231, which is located within the first clamping groove 221. The first connecting portion 231 is frustum-shaped, and its diameter gradually decreases towards the second connecting shaft 24. Similarly, one end of the second connecting shaft 24 is provided with a second connecting portion 242, which is located within the first clamping groove 221. The second connecting portion 242 is also frustum-shaped, and its diameter gradually decreases towards the first connecting shaft 23.

[0073] As is easily understood, the first connecting portion 231 has a taper, and the end near the second connecting shaft 24 has a smaller diameter, which provides a guiding effect and allows it to better extend into the sleeve of the first link 201. Simultaneously, due to its frustum-shaped structure, after the first connecting portion 231 extends into the sleeve to a certain depth, it will clamp and fix itself against the inner wall of the sleeve, thereby improving connection stability and thus enhancing the accuracy of subsequent wear tests. Similarly, the second connecting portion 242 also has a taper, and the end near the first connecting shaft 23 has a smaller diameter, which also provides a guiding effect and allows it to better extend into the sleeve of the first link 201. Furthermore, due to its frustum-shaped structure, after the second connecting portion 242 extends into the sleeve to a certain depth, it will also clamp and fix itself against the inner wall of the sleeve.

[0074] Further, please refer to Figure 5 , Figure 5 This is an exploded view of the fixing clamp 20 provided in this embodiment, combined with... Figure 1 , Figure 4 and Figure 5The first clamp 22 includes a first fixing part 222, a first clamping part 223 and a second clamping part 224. The first fixing part 222 is connected to the fixing base 21. The first clamping part 223 and the second clamping part 224 are spaced apart from each other in the first fixing part 222 and form a first clamping groove 221 between them. The first connecting shaft 23 passes through the first clamping part 223 and the second connecting shaft 24 passes through the second clamping part 224.

[0075] To facilitate the installation and fixation of the first connecting shaft 23 and the second connecting shaft 24, and to ensure rotational stability after engagement with the first link 201, the fixing clamp 20 further includes a first bearing 25, a second bearing 26, a first bushing 27, and a second bushing 28. The first bearing 25 is disposed in the first clamping part 223 and sleeved on the first bushing 27; the second bearing 26 is disposed in the second clamping part 224 and sleeved on the second bushing 28; the first connecting shaft 23 passes through the first bushing 27, and at least a portion of the first connecting shaft 23 is threadedly connected to the first bushing 27; the second connecting shaft 24 passes through the second bushing 28, and at least a portion of the second connecting shaft 24 is threadedly connected to the second bushing 28. It is easy to understand that the threaded connection allows the first connecting shaft 23 and the second connecting shaft 24 to easily extend into the first clamping groove 221 and connect and fix with the first link 201.

[0076] It should be noted that the first clamping part 223 and the second clamping part 224 are respectively provided with a first mounting hole and a second mounting hole (not shown in the figure). The first mounting hole and the second mounting hole are connected to the first clamping groove 221, which can facilitate the installation and fixation of the first bearing 25 and the second bearing 26. The first mounting hole and the second mounting hole are both stepped holes, that is, a first annular limiting part and a second annular limiting part (not shown in the figure) are respectively provided on the side near the first clamping groove 221, thereby preventing the first bearing 25 and the second bearing 26 from falling into the first clamping groove 221.

[0077] Furthermore, in order to better fix the first bearing 25 and the second bearing 26, the fixing clamp 20 also includes a plurality of first sealing plates 29. The first clamping part 223 is provided with at least two first sealing plates 29 on the side away from the second clamping part 224, and the second clamping part 224 is provided with at least two first sealing plates 29 on the side away from the first clamping part 223. The first sealing plates 29 can better fix the first bearing 25 and the second bearing 26 in the first mounting hole and the second mounting hole respectively.

[0078] Please refer to Figure 6 , Figure 6 This is a structural schematic diagram of the movable clamp 30 provided in this embodiment, combined with... Figure 1 , Figure 2 and Figure 6Specifically, the movable clamp 30 includes a movable seat 31, a second chuck 32, a third connecting shaft 33, and a fourth connecting shaft 34. The movable seat 31 is slidably mounted on the detection platform 10. The second chuck 32 is mounted on the movable seat 31 and has a second clamping groove 321. The second chuck 32 is connected to the tensioning device 40. The third connecting shaft 33 passes through the second chuck 32 and extends into the second clamping groove 321. The fourth connecting shaft 34 passes through the second chuck 32 and extends into the second clamping groove 321. The fourth connecting shaft 34 and the third connecting shaft 33 are arranged opposite to each other. The second clamping groove 321 is used to install the third link 203. One end of the third connecting shaft 33 located in the second clamping groove 321 is used to extend into the sleeve of the third link 203. One end of the fourth connecting shaft 34 located in the second clamping groove 321 is used to extend into the sleeve of the third link 203.

[0079] In other words, after the third link 203 is installed in the second clamping groove 321, it can be fixed by the third connecting shaft 33 and the fourth connecting shaft 34, and the tensioning operation of the chain can be achieved by the relative sliding of the movable seat 31 and the detection platform 10, and the connection between the second chuck 32 and the tensioning device 40.

[0080] Specifically, in this embodiment, the detection platform 10 is provided with a first slide rail 11, and the movable seat 31 slides in cooperation with the first slide rail 11. In order to improve the stability during the sliding process, the number of first slide rails 11 can be set to multiple, and the multiple first slide rails 11 are arranged at intervals. In this embodiment, the number of first slide rails 11 is two. Of course, in other embodiments, the number of first slide rails 11 can also be three, four or five, etc.

[0081] Similarly, to facilitate the connection and fixation of the third connecting shaft 33, the fourth connecting shaft 34, and the third link 203, in this embodiment, one end of the third connecting shaft 33 is provided with a third connecting portion 331, which is located within the second clamping groove 321. The third connecting portion 331 is frustum-shaped, and its diameter gradually decreases towards the fourth connecting shaft 34. One end of the fourth connecting shaft 34 is provided with a fourth connecting portion 341, which is located within the second clamping groove 321. The fourth connecting portion 341 is frustum-shaped, and its diameter gradually decreases towards the third connecting shaft 33.

[0082] Similarly, the third connecting portion 331 also has a taper, and the end closer to the fourth connecting shaft 34 has a smaller diameter, which provides a guiding function and allows it to better extend into the sleeve of the third link 203. Furthermore, due to its frustum-shaped structure, after the third connecting portion 331 extends into the sleeve to a certain depth, it will clamp and fix itself against the inner wall of the sleeve, thereby improving connection stability and thus enhancing the accuracy of subsequent wear tests. Likewise, the fourth connecting portion 341 also has a taper, and the end closer to the third connecting shaft 33 has a smaller diameter, which provides a guiding function and allows it to better extend into the sleeve of the third link 203. Also, due to its frustum-shaped structure, after the fourth connecting portion 341 extends into the sleeve to a certain depth, it will clamp and fix itself against the inner wall of the sleeve.

[0083] Further, please refer to Figure 7 , Figure 7 This is an exploded view of the movable fixture 30 provided in this embodiment, combined with... Figure 1 , Figure 6 and Figure 7 The second clamp 32 includes a second fixing part 322, a third clamping part 323 and a fourth clamping part 324. The second fixing part 322 is connected to the movable seat 31. The third clamping part 323 and the fourth clamping part 324 are spaced apart from the second fixing part 322 and form a second clamping groove 321 between them. The third connecting shaft 33 passes through the third clamping part 323 and the fourth connecting shaft 34 passes through the fourth clamping part 324.

[0084] Similarly, to facilitate the installation and fixation of the third connecting shaft 33 and the fourth connecting shaft 34, and to ensure rotational stability after engagement with the third link 203, the movable clamp 30 also includes a third bearing 35, a fourth bearing 36, a third bushing 37, and a fourth bushing 38. The third bearing 35 is disposed in the third clamping part 323 and sleeved on the third bushing 37; the fourth bearing 36 is disposed in the fourth clamping part 324 and sleeved on the fourth bushing 38; the third connecting shaft 33 passes through the third bushing 37, and at least a portion of the third connecting shaft 33 is threadedly connected to the third bushing 37; the fourth connecting shaft 34 passes through the fourth bushing 38, and at least a portion of the fourth connecting shaft 34 is threadedly connected to the fourth bushing 38. It is easy to understand that the threaded connection allows the third connecting shaft 33 and the fourth connecting shaft 34 to easily extend into the second clamping groove 321 and connect and fix with the third link 203.

[0085] It should be noted that the third clamping part 323 and the fourth clamping part 324 are respectively provided with a third mounting hole and a fourth mounting hole (not shown in the figure). The third mounting hole and the fourth mounting hole are connected to the second clamping groove 321, which can facilitate the installation and fixation of the third bearing 35 and the fourth bearing 36. The third mounting hole and the fourth mounting hole are both stepped holes, that is, a third annular limiting part and a fourth annular limiting part (not shown in the figure) are provided on the side near the second clamping groove 321, thereby preventing the third bearing 35 and the fourth bearing 36 from falling into the second clamping groove 321.

[0086] Furthermore, in order to better fix the third bearing 35 and the fourth bearing 36, the movable clamp 30 also includes a plurality of second sealing plates 39. The third clamping part 323 is provided with at least two second sealing plates 39 on the side away from the fourth clamping part 324, and the fourth clamping part 324 is provided with at least two second sealing plates 39 on the side away from the third clamping part 323. The second sealing plates 39 can better fix the third bearing 35 and the fourth bearing 36 in the third mounting hole and the fourth mounting hole respectively.

[0087] Please refer to Figure 8 , Figure 8 This is a structural schematic diagram of the pressure device 50 provided in this embodiment, combined with... Figure 1 and Figure 8 Specifically, the pressure device 50 includes a mounting plate 51, a pressure mechanism 52, a pressure sensor 53, and a pressure head 54. The mounting plate 51 is spaced apart from the detection platform 10. The pressure mechanism 52 is slidably mounted on the mounting plate 51 and is located on the side of the mounting plate 51 closer to the detection platform 10. The pressure sensor 53 is mounted on the pressure mechanism 52. The pressure head 54 is connected to the pressure mechanism 52 and is located on the side of the pressure mechanism 52 closer to the detection platform 10.

[0088] As is easy to understand, during the reciprocating up and down movement, the pressure head can apply pressure to the second link 202. By setting the pressure sensor 53, the pressure applied by the pressure head can be detected in real time, ensuring the test stability of the chain during the wear detection process.

[0089] Since the first link 201 is fixed while the third link 203 is movable, after the pressure head presses down on the second link 202, the third link 203 will move towards the first link 201, and the relative position of the second link 202 will also change. This causes the position to shift during the reciprocating rotation of the chain. Therefore, through the sliding cooperation between the pressure mechanism 52 and the mounting plate 51, it is possible to better ensure that the pressure head cooperates with the second link 202 in the appropriate position each time it is pressed down, thereby further improving the accuracy of the test results.

[0090] It should be noted that, in this embodiment, the pressure head is specifically a pressure head 54 structure with a sprocket tooth shape, which can better simulate the actual chain and sprocket meshing situation, thereby further improving the consistency with the actual working conditions and thus improving the accuracy of the test.

[0091] Please continue to combine Figure 8 To facilitate the installation and disassembly of the pressure mechanism 52, the pressure device 50 also includes a fixing plate 55 and a plurality of clamping components 56. The fixing plate 55 is disposed on the side of the mounting plate 51 near the detection platform 10, and the pressure mechanism 52 is slidably disposed on the fixing plate 55. The plurality of clamping components 56 are spaced apart on the side of the mounting plate 51 near the detection platform 10, and the plurality of clamping components 56 are used to abut against the fixing plate 55 to clamp and fix the fixing plate 55 to the mounting plate 51.

[0092] Specifically, in this embodiment, a second slide rail 551 is provided on the fixing plate 55, and the pressure mechanism 52 slides in cooperation with the second slide rail 551. It is easy to understand that the fixing plate 55 is pressed onto the mounting plate 51 by multiple clamping components 56, thereby achieving the installation and fixation of the pressure mechanism 52. When it is necessary to remove the pressure mechanism 52, simply operate the clamping components 56 to release the clamping force applied to the fixing plate 55.

[0093] Specifically, please refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of the clamping assembly 56 provided in this embodiment, combined with... Figure 8 and Figure 9 The clamping assembly 56 includes a first fastener 561, a second fastener 562, and a clamping block 563. The first fastener 561 is fixed to the mounting plate 51. One end of the clamping block 563 is rotatably connected to the first fastener 561, and the other end of the clamping block 563 abuts against the fixing plate 55. The clamping block 563 has an oblong hole 5631, and the second fastener 562 passes through the oblong hole 5631. The mounting plate 51 has a sliding groove 511. One end of the second fastener 562 is disposed on the clamping block 563, and the other end of the second fastener 562 is disposed in the sliding groove 511.

[0094] In other words, by sliding the second fastener 562 in the groove 511 and cooperating with the waist-shaped hole 5631, the pressure block 563 can be driven to rotate relative to the first fastener 561, thereby achieving the pressing and contacting of the pressure block 563 with the fixing plate 55, or the separation of the pressure block 563 from the fixing plate 55.

[0095] Please refer to Figure 10 , Figure 10 This is a flowchart of the long-pitch chain wear detection method provided in this embodiment, combined with... Figure 10 Methods for detecting wear on long-pitch chains include:

[0096] Step 10: Fix the first link 201 to the fixed clamp 20, and fix the third link 203 to the movable clamp 30;

[0097] Step 20: Operate the tensioning device 40 to drive the movable clamp 30 to move, so as to apply tension to the long pitch chain 200;

[0098] Step 30: Operate the pressure device 50 to move up and down reciprocally and apply pressure to the second link 202 to make the long pitch chain 200 move up and down reciprocally;

[0099] Step 40: Operate displacement sensor 60 to detect the elongation of long pitch chain 200 after the test, and calculate the elongation rate based on the elongation.

[0100] Step 50: If the elongation rate is less than or equal to the preset elongation rate, the long pitch chain 200 is deemed qualified; if the elongation rate is greater than the preset elongation rate, the long pitch chain 200 is deemed unqualified.

[0101] The wear detection method for long-pitch chains 200 eliminates the need for rotational testing of numerous chain links, thus shortening the testing cycle. Furthermore, it accurately simulates the actual operating conditions of the chain during use, resulting in a high degree of consistency between the test process and real-world conditions, thereby improving the accuracy of the test results.

[0102] In summary, embodiments of the present invention provide a long-pitch chain wear detection device 100 and method. The long-pitch chain wear detection device 100 is used to detect wear on a long-pitch chain 200. It includes a detection platform 10, a fixed clamp 20, a movable clamp 30, a tensioning device 40, a pressure device 50, and a displacement sensor 60. The fixed clamp 20 is fixed to the detection platform 10 and is used to clamp the first chain link 201. The movable clamp 30 is slidably disposed on the detection platform 10 and spaced apart from the fixed clamp 20. The movable clamp 30 is used to clamp the third chain link 201. Link 203; Tensioning device 40 is disposed on the testing platform 10 and located on the side of the movable clamp 30 away from the fixed clamp 20. Tensioning device 40 is connected to the movable clamp 30 and is used to drive the movable clamp 30 to move so as to apply tension to the long pitch chain 200; Pressure device 50 is disposed at intervals with the testing platform 10 and is used for reciprocating up and down movement, and applies pressure to the second link 202 so as to make the long pitch chain 200 reciprocate up and down; Displacement sensor 60 is disposed on the testing platform 10 and is used to detect the elongation of the long pitch chain 200 after the test.

[0103] The tensioning device 40 drives the movable clamp 30 to move, which in turn moves the third link 203, thereby tensioning the long-pitch chain 200 and applying tension force to simulate the tension experienced by the chain during actual use. Then, the pressure device 50 moves towards the second link 202 to apply pressure. The second link 202 moves downward after being subjected to pressure, and then moves upward under the action of tension force when the pressure device 50 moves in the opposite direction. In this way, during the reciprocating motion of the pressure device 50 continuously moving downward to apply pressure and moving upward to remove pressure, the long-pitch chain 200 also reciprocates up and down, which can simulate the operation of the chain after meshing with the sprocket during actual use, so that the chain link reciprocates within a certain angle range, thereby realizing the wear test of the chain link hinge pair. After the test, the elongation of the worn long-pitch chain 200 is detected by displacement sensor 60. Then, the elongation rate is calculated based on the elongation and compared with the pre-set elongation rate that needs to be met to determine whether the long-pitch chain 200 is qualified.

[0104] As is easily understood, the long-pitch chain wear detection device 100 can perform wear detection on chains with three links. The device has a small overall footprint, which can reduce investment costs. Furthermore, it eliminates the need to use a rotation test to test a large number of links, thus shortening the test cycle of the long-pitch chain 200. At the same time, it can accurately simulate the working conditions of the chain in actual use, and the test process has a high degree of consistency with the actual working conditions, thereby improving the accuracy of the test results.

[0105] The long-pitch chain wear detection method is implemented using a long-pitch chain wear detection device 100, which has all the beneficial effects of the long-pitch chain wear detection device 100.

[0106] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. 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 long-pitch chain wear detection device, characterized in that, For detecting wear on a long-pitch chain (200), the long-pitch chain (200) includes a first link (201), a second link (202), and a third link (203) connected in sequence; the long-pitch chain wear detection device (100) includes: Detection platform (10); A fixing clamp (20) is fixed to the detection platform (10) and is used to clamp the first link (201). A movable clamp (30) is slidably disposed on the detection platform (10) and spaced apart from the fixed clamp (20). The movable clamp (30) includes a movable seat (31), a second chuck (32), a third connecting shaft (33), and a fourth connecting shaft (34). The movable seat (31) is slidably disposed on the detection platform (10). The second chuck (32) is disposed on the movable seat (31) and has a second clamping groove (321). The second chuck (32) is connected to the tensioning device (40). The third connecting shaft (33) passes through the second chuck (32). The fourth connecting shaft (34) is inserted into the second clamping groove (32) and passes through the second chuck (32), extending into the second clamping groove (321). The fourth connecting shaft (34) is arranged opposite to the third connecting shaft (33). The second clamping groove (321) is used to install the third link (203). One end of the third connecting shaft (33) located in the second clamping groove (321) is used to extend into the sleeve of the third link (203). One end of the fourth connecting shaft (34) located in the second clamping groove (321) is used to extend into the sleeve of the third link (203). Tensioning device (40) is disposed on the detection platform (10) and located on the side of the movable clamp (30) away from the fixed clamp (20). The tensioning device (40) is connected to the movable clamp (30) and is used to drive the movable clamp (30) to move so as to apply tension to the long pitch chain (200). A pressure device (50) is spaced apart from the detection platform (10) and is used for reciprocating up and down motion to apply pressure to the second link (202) so that the long-pitch chain (200) reciprocates up and down; and A displacement sensor (60) is disposed on the detection platform (10) and is used to detect the elongation of the long pitch chain (200) after the test; The pressure device (50) includes a mounting plate (51), a pressure mechanism (52), a pressure sensor (53), and a pressure head (54). The mounting plate (51) is spaced apart from the detection platform (10). The pressure mechanism (52) is slidably disposed on the mounting plate (51) and located on the side of the mounting plate (51) close to the detection platform (10). The pressure sensor (53) is disposed on the pressure mechanism (52). The pressure head (54) is connected to the pressure mechanism (52) and located on the side of the pressure mechanism (52) close to the detection platform (10).

2. The long-pitch chain wear detection device according to claim 1, characterized in that, The fixing fixture (20) includes a fixing base (21), a first chuck (22), a first connecting shaft (23) and a second connecting shaft (24). The fixing base (21) is fixed to the detection platform (10), and the first chuck (22) is disposed on the fixing base (21) and has a first clamping groove (221). The first connecting shaft (23) passes through the first chuck (22) and extends into the first clamping groove (221), and the second connecting shaft (24) passes through the first chuck (22) and extends into the first clamping groove (221). The second connecting shaft (24) is arranged opposite to the first connecting shaft (23). The first clamping groove (221) is used to install the first link (201), the first connecting shaft (23) is located at one end of the first clamping groove (221) and is used to extend into the sleeve of the first link (201), and the second connecting shaft (24) is located at one end of the first clamping groove (221) and is used to extend into the sleeve of the first link (201).

3. The long-pitch chain wear detection device according to claim 2, characterized in that, One end of the first connecting shaft (23) is provided with a first connecting portion (231), the first connecting portion (231) is located in the first clamping groove (221), the shape of the first connecting portion (231) is frustum-shaped, and the diameter of the first connecting portion (231) gradually decreases towards the second connecting shaft (24); and / or, One end of the second connecting shaft (24) is provided with a second connecting part (242), which is located in the first clamping groove (221). The second connecting part (242) is shaped like a frustum, and the diameter of the second connecting part (242) gradually decreases towards the first connecting shaft (23).

4. The long-pitch chain wear detection device according to claim 1, characterized in that, One end of the third connecting shaft (33) is provided with a third connecting part (331), which is located in the second clamping groove (321). The third connecting part (331) is frustum-shaped, and its diameter gradually decreases towards the fourth connecting shaft (34); and / or, One end of the fourth connecting shaft (34) is provided with a fourth connecting part (341), which is located in the second clamping groove (321). The fourth connecting part (341) is shaped like a frustum, and the diameter of the fourth connecting part (341) gradually decreases towards the direction of the third connecting shaft (33).

5. The long-pitch chain wear detection device according to claim 1, characterized in that, The pressure device (50) also includes a fixing plate (55) and a plurality of clamping components (56). The fixing plate (55) is disposed on the side of the mounting plate (51) near the detection platform (10), and the pressure mechanism (52) is slidably disposed on the fixing plate (55). The plurality of clamping components (56) are spaced apart on the side of the mounting plate (51) near the detection platform (10), and the plurality of clamping components (56) are used to abut against the fixing plate (55) to clamp and fix the fixing plate (55) to the mounting plate (51).

6. The long-pitch chain wear detection device according to claim 5, characterized in that, The clamping assembly (56) includes a first fastener (561), a second fastener (562), and a clamping block (563). The first fastener (561) is fixed to the mounting plate (51). One end of the clamping block (563) is rotatably connected to the first fastener (561), and the other end of the clamping block (563) abuts against the fixing plate (55). The clamping block (563) has an oblong hole (5631), and the second fastener (562) passes through the oblong hole (5631). The mounting plate (51) has a groove (511), one end of the second fastener (562) is disposed in the pressure block (563), and the other end of the second fastener (562) is disposed in the groove (511).

7. The long-pitch chain wear detection device according to claim 1, characterized in that, The tensioning device (40) includes a tensioning mechanism (41) and a tension sensor (42). The tensioning mechanism (41) is disposed on the detection platform (10) and is located on the side of the movable clamp (30) away from the fixed clamp (20). The tension sensor (42) is disposed between the movable clamp (30) and the tensioning mechanism (41), and the movable clamp (30), the tension sensor (42), and the tensioning mechanism (41) are connected in sequence; and / or, The long pitch chain wear detection device (100) also includes a temperature sensor (70), which is set on the detection platform (10) and is used to detect the pin temperature of the long pitch chain (200).

8. A method for detecting wear on long-pitch chains, characterized in that, The long-pitch chain wear detection method is implemented using the long-pitch chain wear detection device (100) according to any one of claims 1-7, and includes: The first link (201) is fixed to the fixed clamp (20), and the third link (203) is fixed to the movable clamp (30). The tensioning device (40) is operated to drive the movable clamp (30) to move, so as to apply tension to the long pitch chain (200); The pressure device (50) is operated to reciprocate up and down, and pressure is applied to the second link (202) to make the long pitch chain (200) reciprocate up and down; The displacement sensor (60) is operated to detect the elongation of the long pitch chain (200) after the test, and the elongation rate is calculated based on the elongation. If the elongation rate is less than or equal to the preset elongation rate, the long pitch chain (200) is deemed qualified; if the elongation rate is greater than the preset elongation rate, the long pitch chain (200) is deemed unqualified.

Images