Long-pitch chain wear detection equipment and method

Abstract

The embodiment of the invention provides long-pitch chain wear detection equipment and method, and relates to the technical field of chain detection. The long-pitch chain abrasion detection equipment comprises a detection platform, a fixed clamp, a movable clamp, a tensioning device, a pressure device and a displacement sensor, and the fixed clamp is fixedly arranged on the detection platform and 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, is connected with the movable clamp and is used for driving the movable clamp to move so as to apply tensioning force to the long-pitch chain; the pressure device and the detection platform are arranged at an interval, and the pressure device is used for reciprocating up and down and applying pressure to the 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 the test. The test cycle of the long-pitch chain can be shortened, the matching degree of the test process and the actual working condition is high, the accuracy of the test result is improved, the occupied area is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chain detection, and in particular to a long pitch chain wear detection device and method. Background Art

[0002] As one of the key transmission components, the chain has the advantages of smooth transmission, wide center distance range, strong impact resistance, high efficiency and adaptability to harsh environments. It is widely used in various fields of the national economy, such as engineering machinery, metallurgy, aerospace, automobile and agricultural machinery industries. However, in actual application, the hinge pair of the chain will wear, which will affect its service life. Therefore, it is necessary to perform wear detection on the chain to ensure that it can reach the expected life during use.

[0003] In view of the particularities of different industries, the specifications and types of chains vary. For the wear detection of short-pitch chains, a simulated rotary test bench can be constructed according to the actual working conditions, and the wear of the chain hinge pair can be evaluated by continuous high-speed operation. However, for long-pitch chains, due to their longer pitch, if a rotary test is used, there will be problems such as large equipment footprint, high investment cost and long test cycle. In addition, the existing testing equipment is unable to accurately reflect the wear of the chain under actual working conditions, resulting in low accuracy of the test results. Summary of the invention

[0004] The purpose of the present invention is to provide a long pitch chain wear detection device and method, which can shorten the test period of the long pitch chain, make the test process highly consistent with the actual working conditions, improve the accuracy of the test results, reduce the floor space and reduce the investment cost.

[0005] The embodiment of the present invention is achieved as follows:

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

[0007] Testing platform;

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

[0009] A movable clamp, which is slidably disposed on the detection platform and spaced apart from the fixed clamp, and is used to clamp the third chain link;

[0010] A tensioning device, the tensioning device is arranged on the detection platform and is located on a side of the movable fixture away from the fixed fixture, the tensioning device is connected to the movable fixture and is used to drive the movable fixture to move so as to apply tensioning force to the long pitch chain;

[0011] a pressure device, the pressure device is spaced apart from the detection platform and is used for reciprocating up and down and applying pressure to the second chain link to make the long pitch chain reciprocate up and down; and

[0012] A displacement sensor is arranged 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 seat, a first clamp, a first connecting shaft and a second connecting shaft, the fixing seat is fixed to the detection platform, the first clamp is arranged on the fixing seat and is provided with a first clamping groove;

[0014] The first connecting shaft is passed through the first clamping head and extends into the first clamping groove, the second connecting shaft is passed through the first clamping head and extends into the first clamping groove, and 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, a first connecting portion is provided at one end of the first connecting shaft, the first connecting portion is located in the first clamping groove, the first connecting portion is truncated cone-shaped, and the diameter of the first connecting portion gradually decreases toward the direction approaching the second connecting shaft; and / or,

[0017] A second connecting portion is provided at one end of the second connecting shaft. The second connecting portion is located in the first clamping groove. The second connecting portion is truncated cone-shaped, and the diameter of the second connecting portion gradually decreases toward the direction approaching the first connecting shaft.

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

[0019] The third connecting shaft is passed through the second clamping head and extends into the second clamping groove, the fourth connecting shaft is passed through the second clamping head and extends into the second clamping groove, and the fourth connecting shaft is arranged opposite to the third connecting shaft;

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

[0021] In an optional embodiment, a third connecting portion is provided at one end of the third connecting shaft, the third connecting portion is located in the second clamping groove, the third connecting portion is truncated cone-shaped, and the diameter of the third connecting portion gradually decreases toward the direction approaching the fourth connecting shaft; and / or,

[0022] A fourth connecting portion is provided at one end of the fourth connecting shaft. The fourth connecting portion is located in the second clamping groove. The fourth connecting portion is truncated cone-shaped, and the diameter of the fourth connecting portion gradually decreases toward the direction approaching 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 disposed on the mounting plate and is located on a side of the mounting plate close to the detection platform; the pressure sensor is disposed on the pressure mechanism, and the pressure head is connected to the pressure mechanism and is located on a side of the pressure mechanism close to the detection platform.

[0024] In an optional embodiment, the pressure device further comprises a fixing plate and a plurality of pressing components, the fixing plate is arranged on a side of the mounting plate close to the detection platform, and the pressure mechanism is slidably arranged on the fixing plate;

[0025] The plurality of clamping assemblies are arranged at intervals on a side of the mounting plate close to the detection platform, and the plurality of clamping assemblies are used to abut against the fixing plate to clamp and fix the fixing plate and the mounting plate.

[0026] In an optional embodiment, the clamping assembly includes a first fastener, a second fastener and a pressing block, the first fastener is fixed to the mounting plate, one end of the pressing block is rotatably connected to the first fastener, the other end of the pressing block abuts against the fixing plate, and the pressing block is provided with a waist-shaped hole, and the second fastener is passed through the waist-shaped hole;

[0027] The mounting plate is provided with a slide groove, one end of the second fastener is arranged on the pressing block, and the other end of the second fastener is arranged in the slide groove.

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

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

[0030] In a second aspect, the present invention provides a long pitch chain wear detection method, which is implemented using the long pitch chain wear detection device described in any one of the aforementioned embodiments, and the long pitch chain wear detection method includes:

[0031] Fixing the first chain link to the fixed fixture, and fixing the third chain link to the movable fixture;

[0032] Operating the tensioning device to drive the movable clamp to move so as to apply tensioning force to the long pitch chain;

[0033] Operating the pressure device to reciprocate up and down and applying pressure to the second chain link to make the long pitch chain 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 is calculated according to the elongation;

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

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

[0037] The long pitch chain wear detection equipment is used to perform wear detection on the long pitch chain, and includes a detection platform, a fixed clamp, a movable clamp, a tensioning device, a pressure device and a displacement sensor. The fixed clamp is fixed on the detection platform and is used to clamp the first chain link; the movable clamp is slidably arranged on the detection platform and is spaced apart from the fixed clamp, and the movable clamp is used to clamp the third chain link; the tensioning device is arranged on the detection platform and is 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 tensioning force to the long pitch chain; the pressure device is spaced apart from the detection platform and is used to reciprocate up and down and apply pressure to the second chain link so that the long pitch chain reciprocates up and down; the displacement sensor is arranged on the detection platform and is used to detect the elongation of the long pitch chain after the test.

[0038] That is to say, by driving the movable clamp to move through the tensioning device, the third chain link can be driven to move, thereby tensioning the long pitch chain and applying tensioning force to simulate the tension applied to the chain during actual use. Then, the pressure device is moved toward the second chain link to apply pressure, and the second chain link moves downward after being subjected to pressure. Then, when the pressure device moves in the opposite direction, the second chain link moves upward under the action of the tensioning force; in this way, in the reciprocating motion process of the pressure device continuously moving downward to apply pressure and moving upward to remove pressure, the long pitch chain will also be reciprocated 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 angular range, thereby realizing the wear test of the chain link hinge pair. After the test, the elongation of the worn long pitch chain is detected by the displacement sensor, and then the elongation calculated based on the elongation is compared with the pre-set elongation to be met, so as to determine whether the long pitch chain is qualified.

[0039] It is easy to understand that the long-pitch chain wear detection equipment can perform wear detection on chains with three links. The overall footprint of the equipment is small, which can reduce investment costs, and there is no need to use rotation tests to detect more links, thus shortening the test cycle of long-pitch chains. At the same time, it can also accurately simulate the working conditions of the chain during actual use, and the test process is highly consistent with the actual working conditions, thereby improving the accuracy of the test results.

[0040] The long pitch chain wear detection method is implemented by using the long pitch chain wear detection device, and has all the beneficial effects of the long pitch chain wear detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of the structure of a long pitch chain wear detection device provided by an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the structure of a long pitch chain provided by an embodiment of the present invention;

[0044] Figure 3 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 A schematic diagram of the structure of a fixing fixture provided in an embodiment of the present invention;

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

[0047] Figure 6 A schematic diagram of the structure of a movable clamp provided by an embodiment of the present invention;

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

[0049] Figure 8 A schematic diagram of the structure of a pressure device provided by an embodiment of the present invention;

[0050] Fig. 9 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present invention;

[0051] Fig.10 A flowchart of a 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-fixed fixture; 21-fixed seat; 22-first chuck; 221-first clamping groove; 222-first fixed 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 closing plate; 30-movable fixture; 31-movable seat; 32-second chuck; 321-second clamping groove; 322-second fixed 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 closing 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-fixed plate; 551-second slide rail; 56-clamping assembly; 561-first fastener; 562-second fastener; 563-pressing block; 5631-waist hole; 60-displacement sensor; 70-temperature sensor; 200-long pitch chain; 201-first link; 202-second link; 203-third link. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0057] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only 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 the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] As described in the background technology, during actual application, the hinge pair of the chain will wear out, which will affect its service life. Therefore, it is necessary to perform wear detection on the chain to ensure that it can reach the expected life during use. Due to the particularity of different industries, the specifications and types of chains vary. For the wear detection of short-pitch chains, a simulated rotary test bench can be constructed according to the actual working conditions, and the wear of the hinge pair of the chain can be evaluated by continuous high-speed operation. However, for long-pitch chains, due to their longer pitch, if a rotary test is used, there will be problems such as large equipment footprint, high investment cost and long test cycle. In addition, the existing testing equipment is unable to accurately reflect the wear of the chain under actual working conditions, resulting in low accuracy of the test results.

[0060] Based on this, please refer to Figure 1-Figure 10The embodiment of the present invention provides a long pitch chain wear detection device 100 and method, which can effectively improve the above-mentioned technical problems, that is, it can shorten the test cycle of the long pitch chain, the test process is highly consistent with the actual working conditions, improve the accuracy of the 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 The structural diagram of the long pitch chain 200 provided in this embodiment is combined with Figure 1 and Figure 2 The long pitch chain wear detection device 100 is used to perform wear detection on the long pitch chain 200. The long pitch chain 200 includes a first link 201, a second link 202 and a third link 203 which are 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 is highly consistent with the actual working conditions.

[0062] For further information, please refer to Figure 3 , Figure 3 The assembly diagram of the long pitch chain wear detection device 100 and the long pitch chain 200 provided in this embodiment is combined with Figure 1-Figure 3 The long pitch chain wear detection device 100 includes a detection platform 10, a fixed fixture 20, a movable fixture 30, a tensioning device 40, a pressure device 50 and a displacement sensor 60. The fixed fixture 20 is fixedly arranged on the detection platform 10 and is used to clamp the first chain link 201; the movable fixture 30 is slidably arranged on the detection platform 10 and is spaced apart from the fixed fixture 20. The movable fixture 30 is used to clamp the third chain link 203; the tensioning device 40 is arranged on the detection platform 10 and is located at the movable fixture 30. The movable clamp 30 is on the side away from the fixed clamp 20, and 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 tensioning force to the long pitch chain 200; the pressure device 50 is arranged at an interval from the detection platform 10, and is used to reciprocate up and down, and apply pressure to the second link 202 to make the long pitch chain 200 reciprocate up and down; the displacement sensor 60 is arranged on the detection platform 10, and is used to detect the elongation of the long pitch chain 200 after the test.

[0063] That is to say, by driving the movable clamp 30 to move through the tensioning device 40, the third chain link 203 can be driven to move, thereby tensioning the long pitch chain 200 and applying tensioning force to simulate the tension in the actual use of the chain. Then, the pressure device 50 is moved toward the second chain link 202 to apply pressure, and the second chain link 202 moves downward after being pressed, and then when the pressure device 50 moves in the opposite direction, the second chain link 202 moves upward under the action of the tensioning force; in this way, in the reciprocating motion process of the pressure device 50 continuously moving downward to apply pressure and moving upward to remove pressure, the long pitch chain 200 will also reciprocate up and down, which can simulate the operation of the chain after meshing with the sprocket in the actual use process, 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 displacement sensor 60 is used to detect the elongation of the worn long pitch chain 200, and then the elongation calculated based on the elongation is compared with the pre-set elongation to be met, so as to determine whether the long pitch chain 200 is qualified.

[0064] It is easy to understand that the long-pitch chain wear detection equipment 100 can perform wear detection on a chain with three links. The overall footprint of the equipment is small, which can reduce investment costs, and there is no need to use a rotation test to detect more links, thus shortening the test cycle of the long-pitch chain 200; at the same time, it can also accurately simulate the working conditions of the chain during actual use, and the test process is highly consistent with the actual working conditions, thereby improving the accuracy of the test results.

[0065] It should be noted that, during the entire wear test, the tensioning device 40 always provides tensioning force to the chain, and the tensioning device 40 has a certain elasticity (the tensioning device 40 can be driven by a spring or a hydraulic machinery), so that the second link 202 can move downward after being subjected to pressure; that is, after the pressure device 50 moves downward and applies pressure to the second link 202, the movable clamp 30 will move in the direction close to the fixed clamp 20, so that the chain can achieve up and down reciprocating motion, and the chain links can achieve reciprocating rotation within a certain angular range, thereby ensuring that the chain link hinge pairs are subject to a certain amount of friction and wear.

[0066] In addition, it should be noted that the elongation mentioned in the above content 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 range. If the actual calculated elongation is less than or equal to the preset elongation, the chain can be judged to be qualified, otherwise it is unqualified.

[0067] Since the specifications and sizes of long pitch chains are different, 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; and the number of times the chain reciprocates up and down, corresponding to the number of times the pressure device 50 reciprocates and presses down, also needs to be calculated based on the service life of the chain to cooperate with the corresponding wear test. For example, a chain has a pitch of 100mm and a service life of 18 years. The set elongation that needs to be met is 3%. The above parameters are used to calculate that the chain needs to reciprocate 1 million times, and then the tension and pressure that are consistent with the actual working conditions are set, and the pressure device 50 is operated to reciprocate up and down, so that the chain needs to reciprocate 1 million times. After that, the elongation of the chain is measured and calculated. If the elongation is less than or equal to 3%, the chain is judged to be 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 the tensioning mechanism 41 drives the tension sensor 42 to move, thereby driving the movable clamp 30 to move, so as to achieve the tensioning effect on the chain, and by setting the tension sensor 42, the tensioning force 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 will rise. Therefore, in order to monitor the temperature of the pin, the long pitch chain wear detection device 100 also includes a temperature sensor 70. The temperature sensor 70 is arranged on the detection platform 10 and is used to detect the pin temperature of the long pitch chain 200. By setting the temperature sensor 70, the temperature of the chain pin can be detected in real time to avoid the sudden rise of the pin temperature during the wear test. In addition, according to the temperature rise detected in real time, the values ​​of pressure and tension force, as well as the rate of up and down reciprocating motion of the pressure device 50 can be adjusted in real time to ensure that the chain is subjected to the wear test under suitable working conditions. In addition, the temperature conditions recorded in real time can also be counted together with other parameters detected during the test, and the wear test conditions of the chain can be analyzed, thereby further improving the accuracy of the test results.

[0071] Please refer to Figure 4 Figure 4 The structural diagram of the fixing fixture 20 provided in this embodiment is shown in FIG. Figure 1 , Figure 2 and Figure 4Specifically, the fixing fixture 20 includes a fixing seat 21, a first clamping head 22, a first connecting shaft 23 and a second connecting shaft 24. The fixing seat 21 is fixed to the detection platform 10. The first clamping head 22 is arranged on the fixing seat 21 and is provided with a first clamping groove 221. The first connecting shaft 23 is passed through the first clamping head 22 and extends into the first clamping groove 221. The second connecting shaft 24 is passed through the first clamping head 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. 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 chain link 201. 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 chain link 201. That is, 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] In order to facilitate the connection and fixation between the first connecting shaft 23, the second connecting shaft 24 and the first chain link 201, in this embodiment, a first connecting portion 231 is provided at one end of the first connecting shaft 23, the first connecting portion 231 is located in the first clamping groove 221, the first connecting portion 231 is in the shape of a truncated cone, and the diameter of the first connecting portion 231 gradually decreases toward the direction approaching the second connecting shaft 24. Similarly, a second connecting portion 242 is provided at one end of the second connecting shaft 24, the second connecting portion 242 is located in the first clamping groove 221, the second connecting portion 242 is in the shape of a truncated cone, and the diameter of the second connecting portion 242 gradually decreases toward the direction approaching the first connecting shaft 23.

[0073] It is easy to understand that the first connection part 231 has a taper, and the end close to the second connection shaft 24 has a smaller diameter, which can provide a guiding effect and better extend into the sleeve of the first link 201. At the same time, due to the truncated cone structure, after the first connection part 231 extends into the sleeve to a certain depth, it will be clamped and fixed with the inner wall of the sleeve, thereby improving the connection stability and further improving the accuracy of the subsequent wear test. Similarly, the second connection part 242 also has a taper, and the end close to the first connection shaft 23 has a smaller diameter, which can also provide a guiding effect and better extend into the sleeve of the first link 201. At the same time, due to the truncated cone structure, after the second connection part 242 extends into the sleeve to a certain depth, it will also be clamped and fixed with the inner wall of the sleeve.

[0074] For further information, please refer to Figure 5 , Figure 5 The exploded view of the fixing fixture 20 provided in this embodiment is combined with Figure 1 , Figure 4 and Figure 5The first clamping head 22 includes a first fixing portion 222, a first clamping portion 223 and a second clamping portion 224. The first fixing portion 222 is connected to the fixing seat 21. The first clamping portion 223 and the second clamping portion 224 are spaced apart from each other in the first fixing portion 222, and a first clamping groove 221 is formed between the first fixing portion 222; the first connecting shaft 23 is passed through the first clamping portion 223, and the second connecting shaft 24 is passed through the second clamping portion 224.

[0075] In order to facilitate the installation and fixation of the first connecting shaft 23 and the second connecting shaft 24 and ensure the rotation stability after being matched with the first chain link 201, the fixing fixture 20 also includes a first bearing 25, a second bearing 26, a first sleeve 27 and a second sleeve 28. The first bearing 25 is arranged on the first clamping portion 223 and sleeved on the first sleeve 27. The second bearing 26 is arranged on the second clamping portion 224 and sleeved on the second sleeve 28. The first connecting shaft 23 is inserted into the first sleeve 27, and at least a part of the first connecting shaft 23 is threadedly connected to the first sleeve 27. The second connecting shaft 24 is inserted into the second sleeve 28, and at least a part of the second connecting shaft 24 is threadedly connected to the second sleeve 28. It is easy to understand that the first connecting shaft 23 and the second connecting shaft 24 can be conveniently inserted into the first clamping groove 221 and connected and fixed to the first chain link 201 by threaded connection.

[0076] It should be noted that the first clamping portion 223 and the second clamping portion 224 are respectively provided with a first mounting hole and a second mounting hole (not shown in the figure), and the first mounting hole and the second mounting hole are both connected to the first clamping groove 221, which can facilitate the installation and fixation of the first bearing 25 and the second bearing 26, and the first mounting hole and the second mounting hole are both step-shaped holes, that is, the first annular limiting portion and the second annular limiting portion (not shown in the figure) are respectively provided on the side close to the first clamping groove 221, so as to prevent 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 fixture 20 also includes a plurality of first sealing plates 29, at least two first sealing plates 29 are provided on the side of the first clamping portion 223 away from the second clamping portion 224, and at least two first sealing plates 29 are provided on the side of the second clamping portion 224 away from the first clamping portion 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 The structure diagram of the movable clamp 30 provided in this embodiment is shown in FIG. Figure 1 , Figure 2 and Figure 6Specifically, the movable clamp 30 includes a movable seat 31, a second clamp 32, a third connecting shaft 33 and a fourth connecting shaft 34. The movable seat 31 is slidably arranged on the detection platform 10. The second clamp 32 is arranged on the movable seat 31 and is provided with a second clamping groove 321. The second clamp 32 is connected to the tensioning device 40; the third connecting shaft 33 is passed through the second clamp 32 and extends into the second clamping groove 321. The fourth connecting shaft 34 is passed through the second clamp 32 and extends into the second clamping groove 321. The fourth connecting shaft 34 is arranged opposite to the third connecting shaft 33; wherein 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, and 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] That is to say, 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 chain tensioning operation can be realized through the relative sliding of the movable seat 31 and the detection platform 10, and the connection between the second clamp 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 is slidably matched with the first slide rail 11. In order to improve the stability during the sliding process, the number of the 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 the first slide rails 11 is two. Of course, in other embodiments, the number of the first slide rails 11 can also be three, four or five, etc.

[0081] Similarly, in order to facilitate the connection and fixation between the third connecting shaft 33, the fourth connecting shaft 34 and the third link 203, in this embodiment, a third connecting portion 331 is provided at one end of the third connecting shaft 33, the third connecting portion 331 is located in the second clamping groove 321, the third connecting portion 331 is in a truncated cone shape, and the diameter of the third connecting portion 331 gradually decreases toward the direction approaching the fourth connecting shaft 34. A fourth connecting portion 341 is provided at one end of the fourth connecting shaft 34, the fourth connecting portion 341 is located in the second clamping groove 321, the fourth connecting portion 341 is in a truncated cone shape, and the diameter of the fourth connecting portion 341 gradually decreases toward the direction approaching the third connecting shaft 33.

[0082] It is also easy to understand that the third connection part 331 also has a taper, and the end close to the fourth connection shaft 34 has a smaller diameter, which can also provide a guiding effect, and better extend into the sleeve of the third link 203. At the same time, due to the truncated cone structure, after the third connection part 331 extends into the sleeve to a certain depth, it will be clamped and fixed with the inner wall of the sleeve, thereby improving the connection stability and further improving the accuracy of the subsequent wear test. Similarly, the fourth connection part 341 also has a taper, and the end close to the third connection shaft 33 has a smaller diameter, which can provide a guiding effect, and better extend into the sleeve of the third link 203. At the same time, due to the truncated cone structure, after the fourth connection part 341 extends into the sleeve to a certain depth, it will be clamped and fixed with the inner wall of the sleeve.

[0083] For further information, please refer to Figure 7 , Figure 7 The exploded view of the movable clamp 30 provided in this embodiment is combined with Figure 1 , Figure 6 and Figure 7 The second clamping head 32 includes a second fixing portion 322, a third clamping portion 323 and a fourth clamping portion 324. The second fixing portion 322 is connected to the movable seat 31. The third clamping portion 323 and the fourth clamping portion 324 are spaced apart from each other on the second fixing portion 322, and a second clamping groove 321 is formed between the third clamping portion 322 and the second fixing portion 322; the third connecting shaft 33 is passed through the third clamping portion 323, and the fourth connecting shaft 34 is passed through the fourth clamping portion 324.

[0084] Similarly, in order to facilitate the installation and fixation of the third connecting shaft 33 and the fourth connecting shaft 34 and ensure the rotation stability after being matched with the third link 203, the movable clamp 30 also includes a third bearing 35, a fourth bearing 36, a third sleeve 37 and a fourth sleeve 38. The third bearing 35 is arranged on the third clamping portion 323 and sleeved on the third sleeve 37. The fourth bearing 36 is arranged on the fourth clamping portion 324 and sleeved on the fourth sleeve 38. The third connecting shaft 33 is inserted into the third sleeve 37, and at least a part of the third connecting shaft 33 is threadedly connected to the third sleeve 37. The fourth connecting shaft 34 is inserted into the fourth sleeve 38, and at least a part of the fourth connecting shaft 34 is threadedly connected to the fourth sleeve 38. It is easy to understand that the third connecting shaft 33 and the fourth connecting shaft 34 can be conveniently inserted into the second clamping groove 321 and connected and fixed to the third link 203 by threaded connection.

[0085] It should be noted that the third clamping portion 323 and the fourth clamping portion 324 are respectively provided with a third mounting hole and a fourth mounting hole (not shown in the figure), and the third mounting hole and the fourth mounting hole are both connected to the second clamping groove 321, which can facilitate the installation and fixation of the third bearing 35 and the fourth bearing 36, and the third mounting hole and the fourth mounting hole are both step-shaped holes, that is, a third annular limiting portion and a fourth annular limiting portion (not shown in the figure) are provided on the side close to the second clamping groove 321, so as to prevent 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, at least two second sealing plates 39 are provided on the side of the third clamping portion 323 away from the fourth clamping portion 324, and at least two second sealing plates 39 are provided on the side of the fourth clamping portion 324 away from the third clamping portion 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 The schematic diagram of the structure 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 disposed on the mounting plate 51 and is located on a side of the mounting plate 51 close to the detection platform 10. The pressure sensor 53 is disposed on the pressure mechanism 52, and the pressure head 54 is connected to the pressure mechanism 52 and is located on a side of the pressure mechanism 52 close to the detection platform 10.

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

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

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

[0091] Please continue to combine Figure 8 In order to facilitate the installation and disassembly of the pressure mechanism 52, the pressure device 50 also includes a fixed plate 55 and a plurality of clamping components 56. The fixed plate 55 is arranged on the side of the mounting plate 51 close to the detection platform 10, and the pressure mechanism 52 is slidably arranged on the fixed plate 55; the plurality of clamping components 56 are arranged at intervals on the side of the mounting plate 51 close to the detection platform 10, and the plurality of clamping components 56 are used to abut against the fixed plate 55 to clamp and fix the fixed plate 55 and the mounting plate 51.

[0092] Specifically in this embodiment, the fixing plate 55 is provided with a second slide rail 551, and the pressure mechanism 52 is slidably matched with the second slide rail 551. It is easy to understand that the fixing plate 55 is pressed against the mounting plate 51 by a plurality of pressing components 56, so that the pressure mechanism 52 is installed and fixed, and when the pressure mechanism 52 needs to be removed, it is only necessary to operate the pressing components 56 to cancel the pressing force applied to the fixing plate 55.

[0093] Specifically, please refer to Fig. 9 , Fig. 9 The schematic diagram of the structure of the clamping assembly 56 provided in this embodiment, combined with Figure 8 and Fig. 9 The clamping assembly 56 includes a first fastener 561, a second fastener 562 and a pressing block 563. The first fastener 561 is fixed to the mounting plate 51. One end of the pressing block 563 is rotatably connected to the first fastener 561. The other end of the pressing block 563 abuts against the fixing plate 55. The pressing block 563 is provided with a waist-shaped hole 5631. The second fastener 562 is passed through the waist-shaped hole 5631. The mounting plate 51 is provided with a slide groove 511. One end of the second fastener 562 is arranged on the pressing block 563, and the other end of the second fastener 562 is arranged in the slide groove 511.

[0094] That is to say, by sliding the second fastener 562 in the slide groove 511 and cooperating with the waist-shaped hole 5631, the pressing block 563 can be driven to rotate relative to the first fastener 561, thereby achieving a pressing and abutting contact between the pressing block 563 and the fixing plate 55, or separating the pressing block 563 from the fixing plate 55.

[0095] Please refer to Fig.10 , Fig.10 The flowchart of the long pitch chain wear detection method provided in this embodiment is combined with Fig.10 , long pitch chain wear detection methods include:

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

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

[0098] Step 30: operating the pressure device 50 to reciprocate up and down, and applying pressure to the second chain link 202, so that the long pitch chain 200 reciprocates up and down;

[0099] Step 40: operate the displacement sensor 60 to detect the elongation of the long pitch chain 200 after the test, and calculate the elongation rate according to the elongation;

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

[0101] The long pitch chain 200 is tested for wear by the long pitch chain wear detection method. There is no need to test more chain links by means of a rotation test, which can shorten the test cycle of the long pitch chain 200. At the same time, it can also accurately simulate the working conditions of the chain during actual use, and the test process is highly consistent with the actual working conditions, thereby improving the accuracy of the test results.

[0102] In summary, an embodiment of the present invention provides a long pitch chain wear detection device 100 and a method, wherein the long pitch chain wear detection device 100 is used to perform wear detection on a long pitch chain 200, and comprises a detection platform 10, a fixed fixture 20, a movable fixture 30, a tensioning device 40, a pressure device 50 and a displacement sensor 60, wherein the fixed fixture 20 is fixedly arranged on the detection platform 10 and is used to clamp the first chain link 201; the movable fixture 30 is slidably arranged on the detection platform 10 and is spaced apart from the fixed fixture 20, and the movable fixture 30 is used to clamp the third chain link 201. The chain link 203; the tensioning device 40 is arranged on the detection platform 10 and is 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 tensioning force to the long pitch chain 200; the pressure device 50 is arranged at an interval with the detection platform 10 and is used to reciprocate up and down and apply pressure to the second chain link 202 so that the long pitch chain 200 reciprocates up and down; the displacement sensor 60 is arranged on the detection 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 can drive the third chain link 203 to move, thereby tensioning the long pitch chain 200 and applying tensioning force to simulate the tension in the actual use of the chain. Then, the pressure device 50 moves toward the second chain link 202 to apply pressure, and the second chain link 202 moves downward after being pressed. Then, when the pressure device 50 moves in the opposite direction, the second chain link 202 moves upward under the action of the tensioning force; in this way, in the reciprocating motion process of the pressure device 50 continuously moving downward to apply pressure and moving upward to remove pressure, the long pitch chain 200 will also reciprocate up and down, which can simulate the operation of the chain after meshing with the sprocket in the actual use process, 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 displacement sensor 60 is used to detect the elongation of the worn long pitch chain 200, and then the elongation calculated based on the elongation is compared with the pre-set elongation to be met, so as to determine whether the long pitch chain 200 is qualified.

[0104] It is easy to understand that the long-pitch chain wear detection equipment 100 can perform wear detection on a chain with three links. The overall footprint of the equipment is small, which can reduce investment costs, and there is no need to use a rotation test to detect more links, thus shortening the test cycle of the long-pitch chain 200; at the same time, it can also accurately simulate the working conditions of the chain during actual use, and the test process is highly consistent with the actual working conditions, thereby improving the accuracy of the test results.

[0105] The long pitch chain wear detection method is implemented by using the 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 only 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 may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A long pitch chain wear detection device, characterized in that: Used for performing wear detection on a long pitch chain (200), the long pitch chain (200) comprising a first chain link (201), a second chain link (202) and a third chain link (203) connected in sequence; the long pitch chain wear detection device (100) comprises: Detection platform (10); A fixing fixture (20), the fixing fixture (20) being fixedly mounted on the detection platform (10) and being used for clamping the first chain link (201); A movable clamp (30), the movable clamp (30) being slidably disposed on the detection platform (10) and spaced apart from the fixed clamp (20), the movable clamp (30) being used to clamp the third chain link (203); A tensioning device (40), the tensioning device (40) being arranged on the detection platform (10) and located on a side of the movable fixture (30) away from the fixed fixture (20), the tensioning device (40) being connected to the movable fixture (30) and used for driving the movable fixture (30) to move so as to apply tensioning force to the long pitch chain (200); a pressure device (50), the pressure device (50) being spaced apart from the detection platform (10) and being used for reciprocating up and down and applying pressure to the second chain link (202) so as to cause the long pitch chain (200) to reciprocate up and down; and A displacement sensor (60), wherein the displacement sensor (60) is arranged on the detection platform (10) and is used to detect the elongation of the long pitch chain (200) after the test.

2. The long pitch chain wear detection device according to claim 1, characterized in that: The fixing fixture (20) comprises a fixing seat (21), a first clamping head (22), a first connecting shaft (23) and a second connecting shaft (24); the fixing seat (21) is fixed to the detection platform (10); the first clamping head (22) is arranged on the fixing seat (21) and is provided with a first clamping groove (221); The first connecting shaft (23) is passed through the first clamping head (22) and extends into the first clamping groove (221); the second connecting shaft (24) is passed through the first clamping head (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), 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 chain 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 chain link (201).

3. The long pitch chain wear detection device according to claim 2, characterized in that: A first connecting portion (231) is provided at one end of the first connecting shaft (23), the first connecting portion (231) is located in the first clamping groove (221), the first connecting portion (231) is in a truncated cone shape, and the diameter of the first connecting portion (231) gradually decreases in a direction approaching the second connecting shaft (24); and / or, A second connecting portion (242) is provided at one end of the second connecting shaft (24), the second connecting portion (242) is located in the first clamping groove (221), the second connecting portion (242) is truncated cone-shaped, and the diameter of the second connecting portion (242) gradually decreases towards the direction approaching the first connecting shaft (23).

4. The long pitch chain wear detection device according to claim 1, characterized in that: The movable clamp (30) comprises a movable seat (31), a second clamp (32), a third connecting shaft (33) and a fourth connecting shaft (34); the movable seat (31) is slidably arranged on the detection platform (10); the second clamp (32) is arranged on the movable seat (31) and is provided with a second clamping groove (321); the second clamp (32) is connected to the tensioning device (40); The third connecting shaft (33) is passed through the second clamping head (32) and extends into the second clamping groove (321); the fourth connecting shaft (34) is passed through the second clamping head (32) and extends 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 chain 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 chain link (203), and 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 chain link (203).

5. The long pitch chain wear detection device according to claim 4, characterized in that: A third connecting portion (331) is provided at one end of the third connecting shaft (33), the third connecting portion (331) is located in the second clamping groove (321), the third connecting portion (331) is in a truncated cone shape, and the diameter of the third connecting portion (331) gradually decreases in a direction approaching the fourth connecting shaft (34); and / or, A fourth connecting portion (341) is provided at one end of the fourth connecting shaft (34), and the fourth connecting portion (341) is located in the second clamping groove (321). The shape of the fourth connecting portion (341) is a truncated cone, and the diameter of the fourth connecting portion (341) gradually decreases towards the direction approaching the third connecting shaft (33).

6. The long pitch chain wear detection device according to claim 1, characterized in that: The pressure device (50) comprises 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 arranged on the mounting plate (51) and is located on a side of the mounting plate (51) close to the detection platform (10); the pressure sensor (53) is arranged on the pressure mechanism (52); the pressure head (54) is connected to the pressure mechanism (52) and is located on a side of the pressure mechanism (52) close to the detection platform (10).

7. The long pitch chain wear detection device according to claim 6, characterized in that: The pressure device (50) further comprises a fixing plate (55) and a plurality of pressing components (56), wherein the fixing plate (55) is arranged on a side of the mounting plate (51) close to the detection platform (10), and the pressure mechanism (52) is slidably arranged on the fixing plate (55); The plurality of clamping assemblies (56) are arranged at intervals on a side of the mounting plate (51) close to the detection platform (10), and the plurality of clamping assemblies (56) are used to abut against the fixing plate (55) to clamp and fix the fixing plate (55) and the mounting plate (51).

8. The long pitch chain wear detection device according to claim 7, characterized in that: The clamping assembly (56) comprises a first fastener (561), a second fastener (562) and a pressing block (563), wherein the first fastener (561) is fixed to the mounting plate (51), one end of the pressing block (563) is rotatably connected to the first fastener (561), the other end of the pressing block (563) is in contact with the fixing plate (55), and the pressing block (563) is provided with a waist-shaped hole (5631), and the second fastener (562) is passed through the waist-shaped hole (5631); The mounting plate (51) is provided with a slide groove (511), one end of the second fastener (562) is arranged on the pressing block (563), and the other end of the second fastener (562) is arranged in the slide groove (511).

9. The long pitch chain wear detection device according to claim 1, characterized in that: The tensioning device (40) comprises 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 a 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; and / or, The long pitch chain wear detection device (100) further comprises a temperature sensor (70), wherein the temperature sensor (70) is arranged on the detection platform (10) and is used to detect the pin temperature of the long pitch chain (200).

10. A long pitch chain wear detection method, characterized in that: The long pitch chain wear detection device (100) according to any one of claims 1 to 9 is used to implement the long pitch chain wear detection method, comprising: Fixing the first chain link (201) to the fixed fixture (20), and fixing the third chain link (203) to the movable fixture (30); Operating the tensioning device (40) to drive the movable clamp (30) to move, so as to apply tensioning force to the long pitch chain (200); Operating the pressure device (50) to reciprocate up and down, and applying pressure to the second chain link (202), so that the long pitch chain (200) reciprocates up and down; operating the displacement sensor (60) to detect the elongation of the long pitch chain (200) after the test, and calculating the elongation rate based on the elongation; If the elongation is less than or equal to the preset elongation, the long pitch chain (200) is judged to be qualified; if the elongation is greater than the preset elongation, the long pitch chain (200) is judged to be unqualified.

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