A chain elongation detection device and a detection method thereof

Abstract

The present invention relates to the technical field of length measurement, and specifically discloses a chain elongation detection device and a detection method thereof, wherein the chain elongation detection device comprises a frame, a chain assembly unit, a chain elongation detection unit and a correction unit arranged on the frame; a detection drive motor is used to drive a tensioning sprocket to tension a chain to be tested, and a current position code value of the detection drive motor in a current state is obtained, a current chain elongation corresponding to the current position code value is mapped out through a preset position code value-chain elongation comparison table, and the current chain elongation is compared with a preset chain elongation threshold value, so as to indirectly judge whether the elongation of the chain to be tested is qualified, and the detection accuracy is high; the correction unit is used to squeeze the chain links on both sides of the gap and lubricate the chain link connection with oil to avoid the chain link jamming, so that the chain links on both sides are fully stretched and unfolded, ensuring that the entire chain to be tested is fully stretched to the longest state, and further improving the accuracy of elongation detection.

Description

Technical Field

[0001] The present invention relates to the technical field of length measurement, and more specifically, to a chain elongation detection device and a detection method thereof. Background Art

[0002] The chain is a component of the power transmission structure, which is composed of outer links and inner links connected to each other. The elongation of the chain is mainly caused by the wear caused by the rotation and sliding of the pin and sleeve between the links. As the interval between the links increases, the elongation of the chain gradually increases, thus affecting the stability of power transmission.

[0003] The chain elongation test can effectively evaluate the stability of chain use. Currently, for the chain elongation test, a ruler is generally used to directly measure the overall length of the chain. The chain to be tested needs to be disassembled from a certain link and then the two ends are straightened for measurement. After the measurement is completed, the disassembled links are connected. The measurement steps are cumbersome and the measurement error is large. Summary of the invention

[0004] In order to overcome the above technical problems, the present invention proposes a chain elongation detection device and a detection method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A chain elongation detection device, comprising:

[0007] frame;

[0008] A chain assembly unit is arranged on the frame, and comprises an assembly truss integrally connected to the frame, on which a driving sprocket, a driven sprocket and a guide sprocket are rotatably mounted respectively;

[0009] The chain elongation detection unit is arranged above the chain assembly unit, and comprises a lifting platform which is escalably arranged on the frame, a mounting seat is arranged at the lower end of the lifting platform, a tensioning sprocket is rotatably mounted on the mounting seat, and a detection driving motor for driving the tensioning sprocket to move up and down is installed at the upper end of the lifting platform;

[0010] The controller is arranged on the frame and is used for obtaining the current position code value of the detection drive motor when the chain to be tested is fully tensioned, and then querying the current chain elongation corresponding to the current position code value according to a preset position code value-chain elongation comparison table, and finally comparing the current chain elongation with the preset chain elongation threshold; when the current chain elongation is ≤ the preset chain elongation threshold, it is determined that the chain elongation is qualified; when the current chain elongation is > the preset chain elongation threshold, it is determined that the chain elongation is unqualified.

[0011] As a further solution of the present invention: the chain elongation detection unit also includes two groups of lifting guide sleeves fixed on the frame, a lifting guide rod slidably matched with the corresponding lifting guide sleeves is vertically installed on the lifting platform, a transmission screw is connected to the output end of the detection drive motor, and a screw sleeve matched with the thread of the transmission screw is provided on the frame.

[0012] As a further solution of the present invention: the chain assembly unit also includes a chain driving component arranged at one end of the assembly truss, the chain driving component includes a chain driving motor fixedly mounted on the assembly truss, the output end of the chain driving motor is connected to a first driving shaft, and a first transmission belt is connected between the first driving shaft and the driving sprocket.

[0013] As a further solution of the present invention: a disassembly and assembly avoidance unit is provided on the assembly truss, and the disassembly and assembly avoidance unit includes an avoidance cylinder fixedly installed on one side of the assembly truss, the protruding end of the avoidance cylinder is connected with a avoidance plate, and the avoidance plate is provided with a shaft sleeve adapted for rotation with the driving sprocket, the driven sprocket and the guide sprocket; the driving sprocket, the driven sprocket and the guide sprocket are rotatably installed on the assembly truss at one end away from the avoidance plate.

[0014] As a further solution of the present invention: it also includes a correction unit, which includes a mounting plate fixed on the frame, a sliding frame slidably set on the mounting plate, and a correction piece installed on the end of the sliding frame; the correction piece includes a cylinder horizontally fixed on the sliding frame, a correction block is set at one end of the cylinder, and wedge surfaces adapted to the gaps between adjacent links on the chain to be measured are symmetrically set on both sides of the correction block.

[0015] As a further solution of the present invention: a slide groove is provided on the mounting plate, a slider which is slidably adapted to the slide groove is provided at the lower end of the sliding frame, a swing frame and a swing cylinder for driving the swing frame are also provided on the mounting plate, and the middle part of the swing frame is rotatably connected to the mounting plate through a rotating seat; a clamping groove is provided at one end of the swing frame facing the slide groove, and a pin which is clamped with the clamping groove is provided on the sliding frame.

[0016] As a further solution of the present invention: the calibration member further comprises a telescopic column integrally connected to the calibration block, the telescopic column is slidably connected to the cylinder, an oil injection cavity connected to the telescopic column is provided in the calibration block, and a plurality of oil injection holes connected to the oil injection cavity are provided on the wedge surface;

[0017] A partition is provided in the cylinder, and the partition divides the cylinder into a first chamber and a second chamber. An oil pipe is connected to one end of the first chamber, and a sealing ball is movably provided in the first chamber to seal with the partition. A spring abutting against the sealing ball is provided at one end of the first chamber away from the partition; one end of the telescopic column extending into the second chamber is fixedly connected to the sealing ball through a connecting column.

[0018] As a further solution of the present invention: it also includes a smearing unit, which includes a fixed plate fixed on the frame and a lifting frame which is liftably arranged above the fixed plate, a lifting cylinder for driving the lifting frame is installed at the bottom of the fixed plate, a rotating shaft is rotatably installed on the lifting frame, a flexible smearing disk is arranged on the upper end of the rotating shaft, and a smearing drive component for driving the rotating shaft is also arranged on the lifting frame.

[0019] As a further solution of the present invention: the lifting frame comprises an upper lifting plate and a lower lifting plate, a connecting rod is fixed between the upper lifting plate and the lower lifting plate; a plurality of lifting rods are vertically fixed on the upper lifting plate, and a lifting sleeve slidably adapted to the corresponding lifting rods is provided on the fixed plate;

[0020] The coating drive component includes a coating drive motor fixedly mounted on the lower lifting plate, and a second transmission belt is connected between the output end of the coating drive motor and the rotating shaft.

[0021] The present invention also discloses a chain elongation detection method, comprising the following steps:

[0022] S1. Assemble the chain to be tested onto the driving sprocket, the driven sprocket, the guide sprocket and the tensioning sprocket in sequence;

[0023] S2, the detection drive motor drives the lifting platform upward until the tensioning sprocket fully tensions the chain to be tested;

[0024] S3. The controller obtains the current position code value of the detection drive motor in the current state, and queries the current chain elongation corresponding to the current position code value according to the preset position code value-chain elongation comparison table, and determines whether the elongation of the chain to be tested is qualified by comparing the current chain elongation with the preset chain elongation threshold.

[0025] Beneficial effects of the present invention:

[0026] In the present invention, a detection drive motor is used to drive a tensioning sprocket to tension the chain to be tested, and the current position code value of the detection drive motor in the current state is obtained. The current chain elongation corresponding to the current position code value is mapped through a preset position code value-chain elongation comparison table, and the current chain elongation is compared with a preset chain elongation threshold, thereby indirectly judging whether the elongation of the chain to be tested is qualified, and the detection accuracy is high;

[0027] A correction unit is set up. When the chain driving part drives the chain to be tested to travel a distance of one chain link length, the front end of the correction block is inserted into the gap between the corresponding adjacent chain links on the chain to be tested. The wedge-shaped surfaces on both sides of the correction block are used to squeeze the chain links on both sides of the gap and lubricate the chain link connections to avoid chain link jamming, so that the chain links on both sides are fully stretched and expanded, ensuring that the entire chain to be tested is fully stretched to the longest state, further improving the accuracy of elongation detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a structural schematic diagram of a chain elongation detection device of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a chain assembly unit in a chain elongation detection device of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a chain elongation detection unit in a chain elongation detection device of the present invention;

[0032] Figure 4 It is a schematic diagram of assembling a chain to be tested in a chain elongation detection device of the present invention;

[0033] Figure 5 It is a structural schematic diagram of a disassembly and assembly avoidance unit in a chain elongation detection device of the present invention;

[0034] Figure 6 A top view of a chain assembly unit and a disassembly and avoidance unit in a chain elongation detection device of the present invention;

[0035] Figure 7 It is a schematic diagram of the position distribution of a correction unit and a chain to be tested in a chain elongation detection device of the present invention;

[0036] Figure 8 It is a structural schematic diagram of a correction unit in a chain elongation detection device of the present invention;

[0037] Fig. 9 for Figure 8 Enlarged view of point A in the middle;

[0038] Fig.10 It is a cross-sectional view of a correction member in a chain elongation detection device of the present invention;

[0039] Fig.11 It is a structural schematic diagram of a smearing unit in a chain elongation detection device of the present invention;

[0040] Fig.12It is a structural schematic diagram of a smearing unit in a chain elongation detection device of the present invention from another perspective.

[0041] In the figure:

[0042] 100, rack;

[0043] 200, chain assembly unit; 210, assembly truss; 220, driving sprocket; 230, driven sprocket; 240, guide sprocket; 250, chain driving member; 251, chain driving motor; 252, first driving shaft; 253, first transmission belt;

[0044] 300, chain elongation detection unit; 310, lifting guide sleeve; 320, lifting platform; 330, lifting guide rod; 340, mounting seat; 350, tensioning sprocket; 360, detection drive motor; 370, transmission screw rod; 380, screw rod screw sleeve;

[0045] 400, disassembly and assembly of avoidance unit; 410, avoidance cylinder; 420, avoidance plate; 430, shaft sleeve;

[0046] 500, correction unit; 510, mounting plate; 511, slide; 520, sliding frame; 521, pin; 522, slider; 530, correction member; 531, cylinder; 5311, first chamber; 5312, second chamber; 532, telescopic column; 533, correction block; 5331, wedge surface; 5332, oil filling chamber; 5333, oil filling hole; 534, oil pipe; 535, partition; 536, sealing ball; 537, spring; 538, connecting column; 540, swing frame; 541, slot; 550, rotating seat; 560, swing cylinder;

[0047] 600, coating unit; 610, fixing plate; 611, lifting sleeve; 620, lifting frame; 621, upper lifting plate; 622, connecting rod; 623, lower lifting plate; 624, lifting rod; 630, lifting cylinder; 640, rotating shaft; 650, flexible coating plate; 660, coating drive member; 661, coating drive motor; 662, second transmission belt;

[0048] 700, controller;

[0049] 800. Chain. DETAILED DESCRIPTION

[0050] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0051] See also Figure 1 , the present invention discloses a chain elongation detection device, including a frame 100, a chain assembly unit 200, a chain elongation detection unit 300 and a controller 700;

[0052] See also Figure 2 The chain assembly unit 200 is disposed on the frame 100, and includes an assembly truss 210 integrally connected to the frame 100, on which a driving sprocket 220, a driven sprocket 230 and a guide sprocket 240 are rotatably mounted respectively;

[0053] See also Figure 3 The chain elongation detection unit 300 is arranged above the chain assembly unit 200, and includes a lifting platform 320 which is escalably arranged on the frame 100, a mounting seat 340 is arranged at the lower end of the lifting platform 320, a tensioning sprocket 350 is rotatably mounted on the mounting seat 340, and a detection driving motor 360 for driving the tensioning sprocket 350 to move up and down is installed at the upper end of the lifting platform 320;

[0054] The controller 700 is disposed on the frame 100, and is used to obtain the current position code value of the detection drive motor 360 when the chain 800 to be tested is fully tensioned, and then query the current chain elongation corresponding to the current position code value according to the preset position code value-chain elongation comparison table, and finally compare the current chain elongation with the preset chain elongation threshold;

[0055] When the current chain elongation is ≤ the preset chain elongation threshold, the elongation of the chain 800 is determined to be qualified; when the current chain elongation is > the preset chain elongation threshold, the elongation of the chain 800 is determined to be unqualified.

[0056] It should be noted that the detection drive motor 360 is a servo motor with a built-in encoder. The detection drive motor 360 drives the tensioning sprocket 350 to fully tension the standard chain, and the position coding value of the detection drive motor 360 at this time is recorded as the standard position coding value. When the chain 800 to be tested is stretched and lengthened after being used for a period of time, the detection drive motor 360 drives the tensioning sprocket 350 to fully tension the chain 800 to be tested, and the position coding value of the detection drive motor 360 at this time is recorded as the position coding value to be tested. There is a numerical deviation between the position coding value to be tested and the standard position coding value. The elongation of the chain to be tested corresponding to the position coding value to be tested can be queried according to the preset position coding value-chain elongation comparison table. The position coding value and the chain elongation are mapped one by one. Then, the elongation of the chain to be tested is compared with the preset chain elongation threshold value to intuitively judge whether the elongation of the chain to be tested 800 is qualified.

[0057] In addition, the determination of whether the chain 800 is fully tensioned can be made by obtaining the motor torque detected by the torque sensor built into the detection drive motor 360. When the motor torque value reaches the preset value, it indicates that the detection drive motor 360 has reached the travel limit position. At this time, the detection drive motor 360 cannot continue to rotate, and it can be determined that the chain 800 is now fully tensioned.

[0058] Specifically, see Figure 4 , the detection drive motor 360 drives the chain 800 to be tested to descend to the initial height, and the chain 800 to be tested is sequentially wound around the driving sprocket 220, the driven sprocket 230, the guide sprocket 240 and the tensioning sprocket 350, and the tensioning sprocket 350 is driven upward by the detection drive motor 360 until the chain 800 to be tested is fully tensioned. The controller 700 obtains the current position code value of the detection drive motor 360 in the current state, and queries the current chain elongation corresponding to the current position code value according to the preset position code value-chain elongation comparison table, and compares the current chain elongation with the preset chain elongation threshold value to determine whether the elongation of the chain 800 to be tested is qualified.

[0059] It is worth noting that in the present invention, the detection drive motor 360 is used to drive the tensioning sprocket 350 to tension the chain 800 to be tested, and the current position code value of the detection drive motor 360 in the current state is obtained, and the current chain elongation corresponding to the current position code value is mapped out through a preset position code value-chain elongation comparison table, and the current chain elongation is compared with the preset chain elongation threshold, so as to indirectly judge whether the elongation of the chain 800 to be tested is qualified, and the detection accuracy is high.

[0060] In addition, when the present invention performs elongation detection on chains of different specifications, the standard chain selected for calibration also needs to correspond to the specifications of the chain to be tested. Similarly, in the corresponding preset position code value-chain elongation comparison table, there are differences in the comparison relationship between the preset position code value and the chain elongation, and the mapping relationship between the preset position code value and the chain elongation is nonlinear, which can be set specifically according to actual conditions; considering that chains of different specifications have different sizes and structures of pins and chain links, the corresponding preset chain elongation thresholds are also different under the detection conditions of chains of different specifications; in general, when detecting chains of different specifications, the corresponding standard chain should be selected for calibration, and the corresponding preset position code value-chain elongation comparison table should be selected to perform a comparison query between the position code value of the drive motor 360 and the elongation of the chain to be tested, so that there will be no mutual interference between the detection of chains of different specifications.

[0061] In one embodiment, see Figure 3 The chain elongation detection unit 300 also includes two sets of lifting guide sleeves 310 fixed on the frame 100, and a lifting guide rod 330 slidably matched with the corresponding lifting guide sleeves 310 is vertically installed on the lifting platform 320. The output end of the detection drive motor 360 is connected to a transmission screw 370, and the frame 100 is provided with a screw sleeve 380 threadedly matched with the transmission screw 370;

[0062] Specifically, by detecting that the drive motor 360 drives the transmission screw 370 to rotate, the transmission screw 370 spirally rises and falls along the screw sleeve 380, thereby driving the lifting guide rod 330 on the lifting platform 320 to slide synchronously in the corresponding lifting guide sleeve 310 to achieve height adjustment of the lifting platform 320 and the tensioning sprocket 350.

[0063] Furthermore, considering that the chain 800 to be tested may have a local area of ​​the chain link stuck during the tensioning process and cannot be stretched and unfolded, the overall length of the chain 800 to be tested is too small, thereby affecting the elongation detection accuracy of the chain 800 to be tested; for this purpose, please refer to Figure 2 and Figure 3 The chain assembly unit 200 further includes a chain driving member 250 disposed at one end of the assembly truss 210, and the chain driving member 250 includes a chain driving motor 251 fixedly mounted on the assembly truss 210, and an output end of the chain driving motor 251 is connected to a first driving shaft 252, and a first transmission belt 253 is connected between the first driving shaft 252 and the driving sprocket 220;

[0064] During the process of the detection drive motor 360 driving the tensioning sprocket 350 upward, the first drive shaft 252 is driven to rotate through the chain drive motor 251, and the drive sprocket 220 is driven to rotate under the transmission action of the first transmission belt 253. Since the chain 800 to be tested is meshed and connected with the driving sprocket 220, the driven sprocket 230, the guide sprocket 240 and the tensioning sprocket 350, the chain 800 to be tested can be driven to move continuously. During the continuous movement of the chain 800 to be tested, the tensioning sprocket 350 is used to tension and stretch the chain 800 to be tested upward, so that the chain links in various areas of the chain 800 to be tested can be fully stretched and unfolded, effectively avoiding the jamming and folding of the chain links in local areas, so as to ensure the accuracy of the elongation detection of the chain 800 to be tested.

[0065] For further information, see Figure 5 and Figure 6 In order to facilitate the rapid disassembly and assembly of the chain 800 to be tested, a disassembly and assembly avoidance unit 400 is provided on the assembly truss 210, and the disassembly and assembly avoidance unit 400 includes an avoidance cylinder 410 fixedly installed on one side of the assembly truss 210, and the extended end of the avoidance cylinder 410 is connected to a avoidance plate 420, and the avoidance plate 420 is provided with a sleeve 430 that is rotatably adapted to the driving sprocket 220, the driven sprocket 230 and the guide sprocket 240; the driving sprocket 220, the driven sprocket 230 and the guide sprocket 240 are all rotatably mounted on the assembly truss 210 at one end away from the avoidance plate 420;

[0066] When the chain 800 to be tested needs to be assembled, the avoidance plate 420 is retracted by the avoidance cylinder 410, so that the sleeve 430 on the avoidance plate 420 is separated from the corresponding sprocket, thereby forming an opening in the vertical direction between the avoidance plate 420 and each sprocket, and the chain 800 to be tested is passed through the opening and sequentially sleeved on the driving sprocket 220, the driven sprocket 230, the guide sprocket 240 and the tensioning sprocket 350, and then the avoidance plate 420 is extended by the avoidance cylinder 410, so that the sleeve 430 on the avoidance plate 420 is sleeved on the corresponding sprocket.

[0067] It should be noted that during the chain elongation test, the other end of each sprocket is supported and fixed by disassembling and assembling the avoidance unit 400, which can effectively prevent the sprockets from shaking or shifting, and avoid the overall tilt of the chain 800 to be tested, thereby improving the stability of the test process and the elongation detection accuracy.

[0068] In another embodiment, considering that only the chain driving member 250 drives the chain 800 to move, it may still be impossible to fully stretch all the chain links. Figure 7 , Figure 8 and Fig.10, further comprising a correction unit 500, the correction unit 500 comprising a mounting plate 510 fixed on the frame 100, a sliding frame 520 slidably arranged on the mounting plate 510, and a correction piece 530 installed at the end of the sliding frame 520; the correction piece 530 comprises a cylinder 531 horizontally fixed on the sliding frame 520, a correction block 533 is arranged at one end of the cylinder 531, and wedge surfaces 5331 adapted to the gaps between adjacent links on the chain 800 to be tested are symmetrically arranged on both sides of the correction block 533;

[0069] Specifically, when the chain driving member 250 drives the chain 800 to be tested to travel a distance of the length of a chain link, the sliding frame 520 slides horizontally to drive the correction member 530 to move toward one side of the chain 800 to be tested once, and the correction block 533 in the correction member 530 is driven by the sliding frame 520 to contact the chain 800 to be tested, so that the front end of the correction block 533 is inserted into the gap between adjacent links on the chain 800 to be tested, and the wedge surfaces 5331 on both sides of the correction block 533 are used to squeeze the links on both sides of the gap, so that the links on both sides are fully stretched and expanded, ensuring that the entire chain 800 to be tested is fully stretched to the longest state, thereby further improving the accuracy of elongation detection.

[0070] For further information, see Figure 8 and Fig. 9 The mounting plate 510 is provided with a slide groove 511, and a slider 522 slidably matched with the slide groove 511 is provided at the lower end of the sliding frame 520. The mounting plate 510 is also provided with a swing frame 540 and a swing cylinder 560 for driving the swing frame 540. The middle part of the swing frame 540 is rotatably connected with the mounting plate 510 through a rotating seat 550; a clamping groove 541 is provided at one end of the swing frame 540 facing the slide groove 511, and a pin 521 clamped with the clamping groove 541 is provided on the sliding frame 520;

[0071] Specifically, when the swing cylinder 560 extends, it drives the swing frame 540 to rotate around the rotating seat 550, thereby utilizing the slot 541 on the swing frame 540 to push the pin 521, thereby driving the slider 522 at the lower end of the sliding frame 520 to slide along the slide groove 511 to one side, so that the correction piece 530 at the end of the sliding frame 520 moves toward the side of the chain 800 to be measured to squeeze the gap between adjacent chain links; similarly, when the swing cylinder 560 contracts, it can drive the correction piece 530 at the end of the sliding frame 520 to move toward the side away from the chain 800 to be measured, so that the correction piece 530 is separated from the chain 800 to be measured.

[0072] It should be noted that, since the frequency of the reciprocating movement of the correction member 530 is high and the stroke of each reciprocating movement is short, in this embodiment, the swing cylinder 560 is used to drive the swing frame 540 to deflect, thereby driving the sliding frame 520 to move horizontally, so that the large-stroke telescopic movement of the swing cylinder 560 can be converted into a small-stroke rapid movement of the correction member 530, thereby effectively improving the movement responsiveness of the correction member 530;

[0073] In addition, the movement frequency of the swing cylinder 560 matches the frequency at which the chain driving component 250 drives the chain 800 to be tested to move forward each time the chain driving component 250 drives the chain 800 to be tested to move forward a distance of one chain link, the swing cylinder 560 correspondingly telescopes once, so that the correction component 530 can perform orderly extrusion correction on the gaps between adjacent chain links; in actual applications, the start and stop positions of each movement of the chain 800 to be tested can be adjusted so that the gaps between adjacent chain links are just aligned with the correction block 533.

[0074] Furthermore, considering that the chain 800 to be tested has been in use for a long time, the links are prone to rust and jam, which will affect the full stretching and expansion of the links, and thus affect the elongation detection accuracy. For this reason, please refer to Fig.10 The correction member 530 further includes a telescopic column 532 integrally connected to the correction block 533, the telescopic column 532 is slidably connected to the cylinder 531, an oil injection cavity 5332 communicating with the telescopic column 532 is provided in the correction block 533, and a plurality of oil injection holes 5333 communicating with the oil injection cavity 5332 are provided on the wedge surface 5331;

[0075] The cylinder 531 is provided with a partition 535, and the partition 535 divides the cylinder 531 into a first chamber 5311 and a second chamber 5312. One end of the first chamber 5311 is connected to an oil pipe 534. A sealing ball 536 is movably provided in the first chamber 5311 to seal with the partition 535. The end of the first chamber 5311 away from the partition 535 is provided with a spring 537 abutting against the sealing ball 536. One end of the telescopic column 532 extending into the second chamber 5312 is fixedly connected to the sealing ball 536 through a connecting column 538.

[0076] Specifically, in the initial state, due to the elastic force of the spring 537, the sealing ball 536 is always sealed against the partition 535, and the first chamber 5311 and the second chamber 5312 are isolated from each other, thereby sealing the lubricating oil in the first chamber 5311 to prevent the lubricating oil from accidentally spilling out;

[0077] When the sliding frame 520 drives the correction block 533 on the correction member 530 to be inserted into the gap between adjacent links in the chain 800 to be tested, the telescopic column 532 connected to the correction block 533 is forced to retract into the second chamber 5312 due to the limitation of the links on both sides of the gap, thereby pushing the sealing ball 536 to move toward the end away from the partition 535 through the connecting column 538, so that the sealing ball 536 is separated from the partition 535, and the first chamber 5311 is connected to the second chamber 5312. The lubricating oil injected into the first chamber 5311 through the oil pipe 534 enters the second chamber 5312 from the opening of the partition 535, and then enters the oil filling chamber 5332 through the telescopic column 532 under the action of oil pressure, and finally flows out from each oil filling hole 5333 to lubricate the hinges of adjacent links, so that the chain links can be stretched and unfolded more smoothly.

[0078] See also Fig.11 and Fig.12 , for the oiling and lubrication of each link in the chain 800 to be tested, in order to make the lubricating oil cover each area with the link more comprehensively and evenly, it also includes a smearing unit 600, the smearing unit 600 includes a fixed plate 610 fixed on the frame 100 and a lifting frame 620 escalably arranged above the fixed plate 610, a lifting cylinder 630 for driving the lifting frame 620 is installed at the bottom of the fixed plate 610, a rotating shaft 640 is rotatably installed on the lifting frame 620, a flexible smearing disc 650 is arranged on the upper end of the rotating shaft 640, and a smearing driving member 660 for driving the rotating shaft 640 is also arranged on the lifting frame 620;

[0079] Specifically, the lifting frame 620 is lifted upward by the lifting cylinder 630 until the flexible coating plate 650 contacts the chain 800 to be tested, and then the rotating shaft 640 is driven to rotate by the coating drive member 660, so that the flexible coating plate 650 wraps the passing chain link and rubs the chain link circumferentially relative to the chain link, so that the lubricating oil on the chain link can be evenly applied to various areas, avoiding local accumulation of lubricating oil or insufficient lubrication of local areas of the chain link.

[0080] It should be noted that there is no restriction on the material of the flexible smear plate 650, and it can be made of soft materials such as sponge. It can wrap the chain links in all directions and deform during circumferential rotation to avoid collision and wear between the chain links.

[0081] Also, see Fig.12 The lifting frame 620 includes an upper lifting plate 621 and a lower lifting plate 623, and a connecting rod 622 is fixed between the upper lifting plate 621 and the lower lifting plate 623; a plurality of lifting rods 624 are vertically fixed on the upper lifting plate 621, and a lifting sleeve 611 slidably matched with the corresponding lifting rod 624 is provided on the fixed plate 610;

[0082] The coating drive member 660 includes a coating drive motor 661 fixedly mounted on the lower lifting plate 623 , and a second transmission belt 662 is connected between the output end of the coating drive motor 661 and the rotating shaft 640 .

[0083] In a further embodiment, a chain elongation detection method is also provided, comprising the following steps:

[0084] S1, assembling the chain 800 to be tested onto the driving sprocket 220, the driven sprocket 230, the guide sprocket 240 and the tensioning sprocket 350 in sequence;

[0085] S2, the detection drive motor 360 drives the lifting platform 320 upward until the tensioning sprocket 350 fully tensions the chain 800 to be tested;

[0086] S3, the controller 700 obtains the current position code value of the detection drive motor 360 in the current state, and queries the current chain elongation corresponding to the current position code value according to the preset position code value-chain elongation comparison table, and determines whether the elongation of the chain 800 to be tested is qualified by comparing the current chain elongation with the preset chain elongation threshold.

[0087] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A chain elongation detection device, comprising a frame (100); It is characterized in that Also includes: A chain assembly unit (200) is arranged on a frame (100), comprising an assembly truss (210) integrally connected to the frame (100), wherein a driving sprocket (220), a driven sprocket (230) and a guide sprocket (240) are rotatably mounted on the assembly truss (210); A chain elongation detection unit (300) is arranged above the chain assembly unit (200), comprising a lifting platform (320) which is escalably arranged on the frame (100), a mounting seat (340) being arranged at the lower end of the lifting platform (320), a tensioning sprocket (350) being rotatably mounted on the mounting seat (340), and a detection drive motor (360) for driving the tensioning sprocket (350) to move upward and downward is mounted at the upper end of the lifting platform (320); A controller (700) is arranged on the frame (100) and is used to obtain a current position code value of the detection drive motor (360) when the chain (800) to be tested is fully tensioned, and then query the current chain elongation corresponding to the current position code value according to a preset position code value-chain elongation comparison table, and finally compare the current chain elongation with a preset chain elongation threshold; when the current chain elongation is ≤ the preset chain elongation threshold, it is determined that the elongation of the chain (800) is qualified; when the current chain elongation is greater than the preset chain elongation threshold, it is determined that the elongation of the chain (800) is unqualified; The device also comprises a calibration unit (500), the calibration unit (500) comprising a mounting plate (510) fixed on the frame (100), a sliding frame (520) slidably mounted on the mounting plate (510), and a calibration member (530) mounted on the end of the sliding frame (520); the calibration member (530) comprises a cylinder (531) horizontally fixed on the sliding frame (520), a calibration block (533) being disposed at one end of the cylinder (531), and wedge-shaped surfaces (5331) adapted to gaps between adjacent chain links on the chain (800) to be tested being symmetrically disposed on both sides of the calibration block (533); The mounting plate (510) is provided with a slide groove (511), and a slider (522) slidably matched with the slide groove (511) is provided at the lower end of the sliding frame (520). The mounting plate (510) is also provided with a swing frame (540) and a swing cylinder (560) for driving the swing frame (540). The middle part of the swing frame (540) is rotatably connected to the mounting plate (510) via a rotating seat (550); a clamping groove (541) is provided at one end of the swing frame (540) facing the slide groove (511), and a pin (521) clamped with the clamping groove (541) is provided on the sliding frame (520); The calibration member (530) further comprises a telescopic column (532) integrally connected to the calibration block (533); the telescopic column (532) is slidably connected to the cylinder (531); an oil injection cavity (5332) communicating with the telescopic column (532) is provided in the calibration block (533); and a plurality of oil injection holes (5333) communicating with the oil injection cavity (5332) are provided on the wedge surface (5331); A partition (535) is arranged in the cylinder (531), and the partition (535) divides the cylinder (531) into a first chamber (5311) and a second chamber (5312); one end of the first chamber (5311) is connected to an oil pipe (534); a sealing ball (536) is movably arranged in the first chamber (5311) and is in sealing contact with the partition (535); and a spring (537) is arranged at one end of the first chamber (5311) away from the partition (535) and is in contact with the sealing ball (536); one end of the telescopic column (532) extending into the second chamber (5312) is fixedly connected to the sealing ball (536) via a connecting column (538).

2. A chain elongation detection device according to claim 1, characterized in that: The chain elongation detection unit (300) further comprises two sets of lifting guide sleeves (310) fixed on the frame (100); a lifting guide rod (330) slidably matched with the corresponding lifting guide sleeves (310) is vertically mounted on the lifting platform (320); a transmission screw (370) is connected to the output end of the detection drive motor (360); and a screw sleeve (380) threadably matched with the transmission screw (370) is arranged on the frame (100).

3. A chain elongation detection device according to claim 2, characterized in that: The chain assembly unit (200) further comprises a chain driving member (250) arranged at one end of the assembly truss (210), the chain driving member (250) comprising a chain driving motor (251) fixedly mounted on the assembly truss (210), the output end of the chain driving motor (251) being connected to a first driving shaft (252), and a first transmission belt (253) being connected between the first driving shaft (252) and the driving sprocket (220).

4. A chain elongation detection device according to claim 3, characterized in that: The assembly truss (210) is provided with a disassembly avoidance unit (400), the disassembly avoidance unit (400) comprising an avoidance cylinder (410) fixedly mounted on one side of the assembly truss (210), the extended end of the avoidance cylinder (410) being connected to an avoidance plate (420), the avoidance plate (420) being provided with a shaft sleeve (430) rotatably adapted to the driving sprocket (220), the driven sprocket (230) and the guide sprocket (240); the ends of the driving sprocket (220), the driven sprocket (230) and the guide sprocket (240) away from the avoidance plate (420) are all rotatably mounted on the assembly truss (210).

5. A chain elongation detection device according to claim 1, characterized in that: The invention also comprises a coating unit (600), wherein the coating unit (600) comprises a fixed plate (610) fixed on the frame (100) and a lifting frame (620) which is liftably arranged above the fixed plate (610); a lifting cylinder (630) for driving the lifting frame (620) is installed at the bottom of the fixed plate (610); a rotating shaft (640) is rotatably installed on the lifting frame (620); a flexible coating disc (650) is arranged at the upper end of the rotating shaft (640); and a coating driving member (660) for driving the rotating shaft (640) is also arranged on the lifting frame (620).

6. A chain elongation detection device according to claim 5, characterized in that: The lifting frame (620) comprises an upper lifting plate (621) and a lower lifting plate (623), wherein a connecting rod (622) is fixed between the upper lifting plate (621) and the lower lifting plate (623); a plurality of lifting rods (624) are vertically fixed on the upper lifting plate (621), and a lifting sleeve (611) slidably matched with the corresponding lifting rods (624) is provided on the fixing plate (610); The coating drive member (660) comprises a coating drive motor (661) fixedly mounted on the lower lifting plate (623), and a second transmission belt (662) is connected between the output end of the coating drive motor (661) and the rotating shaft (640).

7. A detection method using the chain elongation detection device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, assembling the chain to be tested (800) onto the driving sprocket (220), the driven sprocket (230), the guide sprocket (240) and the tensioning sprocket (350) in sequence; S2, the detection drive motor (360) drives the lifting platform (320) upward until the tensioning sprocket (350) fully tensions the chain to be tested (800); S3, the controller (700) obtains the current position code value of the detection drive motor (360) in the current state, and searches for the current chain elongation corresponding to the current position code value according to a preset position code value-chain elongation comparison table, and determines whether the elongation of the chain to be tested (800) is qualified by comparing the current chain elongation with a preset chain elongation threshold.

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