Chain measurement and elongation measurement mechanism, system, method and device for power and free catenary conveyor

Abstract

The invention belongs to the technical field of chain measurement, and particularly relates to a chain measurement and elongation measurement mechanism, system, method and device for a power and free catenary conveyor. A chain measuring and elongation measuring device for a power and free catenary conveyor comprises the power and free catenary conveyor, a measuring assembly and a chain. The power and free type catenary conveyor comprises a fixed support, a movable support and a counterweight assembly used for adjusting the position of the movable support. The measuring assembly comprises a measuring sensing assembly, a chain tensioning rotating wheel and a measuring rotating wheel, wherein the chain tensioning rotating wheel and the measuring rotating wheel are installed on the movable support to form a chain bent rail channel. And the chain runs on the power and free catenary conveyor along the closed-loop running track and passes through the chain curved rail channel midway. According to the invention, the online length measurement of the chain of the power and free catenary conveyor and the online calculation of the elongation of the chain of the power and free catenary conveyor can be realized, the manual operation time and the manual error can be effectively reduced, and the potential safety hazard during manual measurement is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of chain measurement, and in particular relates to a chain measurement and elongation measurement mechanism, system, method and device for a power-and-release catenary conveyor. Background Art

[0002] The accumulation type overhead conveyor is a kind of transportation equipment suitable for high productivity and flexible production system. It not only plays a role of transportation, but also runs through the entire production line, integrating sophisticated process operation, storage and transportation functions. With the rapid development of modern logistics and transportation technology, accumulation type conveyors are widely used in various industries, especially in the automobile manufacturing industry, four-door assembly lines, engine assembly lines, vehicle assembly lines, etc.

[0003] The accumulation and release type overhead conveyor is a closed system. The chain disengagement will cause the system closure to be broken, resulting in the system crash. The accumulation and release chain is a die-forged detachable chain, which is composed of chain plates, chain links and chain pins. Chain disengagement means that the chain pin falls off from the connection between the chain plate and the chain link, causing the chain plate and the chain link to be disengaged, which has a greater impact. This problem often occurs before the stable period of equipment operation. Due to the manufacturing and installation accuracy of the equipment itself, the accumulation and release chain needs to be continuously operated and run-in during the commissioning period. This long-term running-in will make the operation between the chain plates and the chain plates, the wheels and the tracks smoother and more rounded. But at the same time, it also causes the chain pitch to increase, and the accumulation and release chain ( Figure 1 ) The overall length becomes longer. During the running-in period of the equipment, this increased length is completely within the adjustment range of the equipment's tensioning device, so there will be no problem. As the equipment is used in the workshop, the wear of the chain will gradually increase and the elongation will increase, and the increased length will gradually exceed the adjustment range of the tensioning device. The catenary tensioning device is tensioned to the limit and cannot absorb the excess length of the chain. In this case, if the tensioning device is not adjusted in time, the chain will be partially too loose. In severe cases, the chain will "cross (rotate 90°)", which will cause the pin connecting the chain to fall off from the cross-chain chain, causing the chain to disengage. In the coating workshop, the accumulation chain is mainly used in the pre-treatment and electrophoresis process sections. There are many lifting stations in the process room, and the upper arch and lower deflection tracks are relatively small from the top of the room. It is extremely inconvenient for equipment maintenance. Therefore, uphill and downhill catchers are basically not installed. In this case, when the chain is disengaged at one place, due to the deadweight of the workpiece and the sling, the sling will drag the chain to accumulate at the lowest point of the track climbing, and the chain will be horizontal again, and the chain will be disengaged again, and even a section of chain may be disengaged in multiple places.

[0004] At present, the manual measurement method is adopted, and 4 people are required to cooperate at the same time. 2 people are placed inside the running equipment to measure the distance between the pitches with a tape measure when the equipment is running, 1 person is responsible for recording the data, and 1 person is responsible for starting the equipment. During the measurement process, the measurement personnel can only communicate with each other through walkie-talkies because they are far away from each other. The inability to observe the current situation of the actual measurement location also poses a great safety hazard.

[0005] At present, due to the structural characteristics of this conveying device (interlaced chain plates, undulating tracks, and the presence of oily and iron filings on the surface), there is no solution or measuring device for chain length measurement, online elongation calculation, and operation link comparison. Summary of the invention

[0006] In order to solve the length measurement, elongation online calculation and operation link comparison of an aerial accumulation type catenary conveyor and avoid the potential safety hazard during manual measurement, the present invention provides a chain measurement and elongation measurement mechanism, system, method and device for an aerial accumulation type catenary conveyor.

[0007] The technical solution adopted by the present invention to solve this problem is:

[0008] A chain measuring and elongation measuring mechanism, comprising:

[0009] A measuring platform, comprising a fixed platform, a mobile platform capable of sliding relative to the fixed platform, and a counterweight assembly for adjusting the position of the mobile platform;

[0010] A measuring assembly, comprising a measuring sensing assembly and a chain tensioning wheel and a measuring wheel mounted on a mobile platform and forming a chain curved track channel therebetween;

[0011] The chain runs on the measuring platform along a closed-loop running track and passes through the chain curved track channel in the middle; when the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly, and the chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched.

[0012] In the above technical solution, the chain is composed of chain plates, chain rings and chain pins. The chain runs on the measuring platform along a closed-loop operation trajectory according to a set trajectory. The closed-loop operation trajectory of the chain includes an upper horizontal section of the chain, a downhill section of the chain, a lower horizontal section of the chain and an uphill section of the chain.

[0013] In the above technical solution, the measurement sensing component includes a measurement start limit switch set at one position of the closed-loop operation track and a chain push head set on the chain. When the chain push head passes by, the measurement start limit switch is triggered and the sensing measurement starts.

[0014] In the above technical solution, the measuring sensing component also includes a limit switch arranged at the uphill and downhill sections of the chain. When the chain push head passes by, the limit switch is triggered to compare the operation of the chain on the closed-loop operation trajectory.

[0015] In the above technical solution, the central axis of the measuring wheel is connected to the central axis of the measuring encoder, so that the measuring wheel and the measuring encoder rotate concentrically.

[0016] In the above technical solution, the mobile platform is slidably mounted on the fixed platform via a mobile track, the mobile track is arranged in pairs on the fixed platform, and the counterweight assembly includes at least two counterweights connected to the same side of the mobile platform, and the counterweights are located on the opposite side of the chain.

[0017] In the above technical solution, the mobile platform is further provided with an adjustment component, and the adjustment component includes:

[0018] A measuring wheel adjustment beam is connected to the adjustment beam running wheel, a measuring wheel suspension beam is arranged at the lower part of the measuring wheel adjustment beam, a measuring encoder and a measuring wheel rotating in a concentric manner are rotatably mounted on the measuring wheel suspension beam; a measuring wheel axle is rotatably arranged on the measuring wheel suspension beam, the lower end of the measuring wheel axle is connected to the measuring wheel, and the upper end is connected to the measuring encoder shaft concentrically, when the measuring wheel rotates, the measuring wheel axle also rotates accordingly and drives the measuring encoder shaft and the measuring encoder to rotate;

[0019] The light wheel installation beam is connected with the adjustment beam running wheel, the lower part of the light wheel installation beam is provided with a tensioning wheel hanging beam, a rotating light wheel shaft is rotatably provided on the tensioning wheel hanging beam, the lower end of the rotating light wheel shaft is connected with a chain tensioning wheel, the chain tensioning wheel and the rotating light wheel shaft, the tensioning wheel hanging beam and the light wheel installation beam form a whole, and the beam running wheel moves forward and backward with the moving track by adjusting the beam;

[0020] There are two adjusting screws in total. The measuring wheel adjusting beam and the light wheel mounting beam are connected by the adjusting screws, and the front-back adjustment between the measuring wheel adjusting beam and the light wheel mounting beam is realized by the lead screw adjusting screw.

[0021] The measuring wheel adjusting crossbeam, the light wheel mounting crossbeam and the adjusting screw rod etc. form a whole, and together form a moving platform.

[0022] The second invention object of the present invention is to provide a chain measurement and elongation measurement system, including a control cabinet and the above-mentioned chain measurement and elongation measurement mechanism, the control cabinet is provided with a start button, a human-computer interaction interface and a PLC, the measurement encoder, the measurement start limit switch and the limit switch are respectively connected to the PLC through a communication cable, the measurement encoder is connected to the PLC X6A1 contact for transmitting a pulse signal; the measurement start limit switch is connected to the PLC X6A0 contact for sensing the start of measurement; the two limit switches are respectively connected to the PLC X6A3 and X6A4 contacts for comparing the operation conditions of the chain on the closed-loop operation trajectory.

[0023] The third invention object of the present invention is to provide a chain measurement and elongation measurement method, comprising the following steps:

[0024] S1. The chain runs on the measuring platform along the closed-loop running track according to the set track. When the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly. The chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched and the chain adjustment function can be realized.

[0025] S2. Click the start button of the control cabinet and the counter starts counting;

[0026] S3. When the chain pusher passes the measurement start limit switch, the signal is transmitted to the PLC X6A0 contact through the wire, and the measurement starts and the previous data is cleared. At the same time, the measurement encoder inputs pulses through the X6A1 contact, and the data register starts to accumulate. The signal of the limit switch is transmitted to the PLC X6A3 and X6A4 contacts through the wire to compare the operation of the chain on the closed-loop operation track.

[0027] S4. Calculate the chain tensioning wheel diameter and the measuring wheel circumference according to the chain tensioning wheel diameter and the measuring wheel diameter; calculate the number of revolutions that the measuring wheel needs to rotate according to the chain pitch reference and the measuring wheel circumference, and obtain the reference pulse number according to the measuring encoder resolution;

[0028] S5. After the measurement data is calculated, it is transmitted to the corresponding register for storage and presented through the human-computer interaction interface.

[0029] The fourth invention objective of the present invention is to provide a chain measuring and elongation measuring device for a power-and-release catenary conveyor, comprising the chain measuring and elongation measuring mechanism described above, specifically comprising:

[0030] An accumulation-and-release catenary chain conveyor, comprising a fixed support as a fixed platform, a mobile support as a mobile platform, and a counterweight assembly for adjusting the position of the mobile support;

[0031] A measuring assembly, comprising a measuring induction assembly, and a chain tensioning wheel and a measuring wheel mounted on a movable bracket and forming a chain curved track channel therebetween;

[0032] The chain runs on the accumulation type catenary conveyor along a closed-loop running track and passes through the chain curved track channel in the middle; when the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly, and the chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched.

[0033] In the above technical solution, the counterweight assembly includes:

[0034] There are at least two rope wheels, and the rope wheels are arranged on a fixed bracket;

[0035] The number of counterweight boxes is the same as the number of rope pulleys, and the counterweight boxes are arranged on a fixed bracket, and the counterweight boxes are provided with counterweight blocks;

[0036] One end of the steel wire rope is connected to the movable bracket, passes through the rope pulley in the middle, and the other end is connected to the counterweight block in the counterweight box.

[0037] In the above technical solution, telescopic rails are arranged on both sides of the fixed bracket, the mobile bracket is connected to the fixed bracket via the telescopic rails, and the mobile bracket is also provided with moving wheels as running wheels and outer rollers as guide wheels.

[0038] The advantages and positive effects of the present invention are as follows: the present invention can realize online length measurement of the chain of the accumulation and release catenary conveyor and online calculation of the elongation of the chain of the accumulation and release catenary conveyor, has online comparison function of operation links and measurement data recording function, realizes periodic comparison, can effectively reduce manual operation time and manual errors, realizes consistency maintenance, and avoids safety hazards during manual measurement.

[0039] In addition, the following important aspects are also provided as auxiliary evidence of the inventiveness of the present invention:

[0040] 1. In the past, manual measurement was used, and four people were required to cooperate at the same time. By adopting the measurement method in the present invention, the manual operation time and manual errors are greatly reduced, consistency is maintained, and safety hazards during manual measurement are avoided. The converted technical solution of the present invention will be applied on a large scale in the production line, which will obtain very considerable economic benefits and value, and it is estimated that 500,000 yuan can be saved.

[0041] 2. The technical solution of the present invention fills the technical gap in the domestic accumulation and release aerial catenary, online chain measurement and elongation measurement mechanism, system and method.

[0042] 3. The technical solution of the present invention solves the difficulties in the measurement process of the accumulation and release aerial chain due to its own characteristics. It is compact to install. Even in a narrow working space and when the measurable position chain needs to be measured in a rotating state, data can be acquired and recorded directly in real time, and can be compared online in real time, to assist in judging the tightness of the far end of the outer chain of the driving part when it is running, and other technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0044] Figure 1 It is a schematic diagram of the chain out of stock process in the background technology;

[0045] Figure 2 is a top view of the chain measurement and elongation measurement mechanism in Example 1;

[0046] Figure 3 is a top view of the mobile platform in Example 1;

[0047] Figure 4 is a front view of the mobile platform in Example 1;

[0048] Figure 5 is a side view of the mobile platform in Example 1;

[0049] Figure 6 is a schematic structural diagram of the chain measurement and elongation measurement system in Example 2;

[0050] Figure 7 is a schematic structural diagram of a chain measuring and elongation measuring device for a power-and-release catenary conveyor in Example 4;

[0051] Figure 8 is a front view of a chain measuring and elongation measuring device for a power-and-release catenary conveyor in Example 4;

[0052] Fig. 9 It is the wiring between PLC and human-machine interface in PLC control cabinet Figure 1 ;

[0053] Fig.10 It is the connection between PLC and human-machine interface and related contacts Figure 2 ;

[0054] Fig.11 It is the connection between PLC and human-machine interface and related contacts Figure 3 ;

[0055] Fig.12 It is the connection between PLC and human-machine interface and related contacts Figure 4 ;

[0056] Fig.13 It is the connection between PLC and human-machine interface and related contacts Figure 5 ;

[0057] Fig.14 It is the connection between PLC and human-machine interface and related contacts Figure 6 ;

[0058] Fig.15 It is the connection between PLC and human-machine interface and related contacts Figure 7 ;

[0059] Fig.16 It is the connection between PLC and human-machine interface and related contacts Figure 8 ;

[0060] Fig.17 It is the interface of human-computer interaction interface Figure 1 ;

[0061] Fig.18 It is the interface of human-computer interaction interface Figure 2 .

[0062] In the figure: 1-counterweight; 2-chain tensioning wheel; 3-measuring wheel; 4-measuring encoder; 5-chain; 6-human-machine interface; 7-control cabinet; 8-limit switch; 9-chain push head; 10-measurement start limit switch; 11-fixed platform; 12-mobile platform; 13-measuring wheel adjustment beam; 14-measuring wheel hanging beam; 15-measuring wheel axle; 16-optical wheel installation beam; 17-tensioning wheel hanging beam; 18-rotating optical wheel axle; 19-mobile track; 20-screw adjustment screw; 21-ropes; 22-wire ropes; 23-chain curved track channel; 24-mobile bracket; 25-mobile wheels; 26-outer rollers; 27-insertion rails; 28-fixed brackets; 29-adjusting screws; 30-telescopic rails; 31-counterweight blocks; 32-counterweight boxes. DETAILED DESCRIPTION

[0063] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The present invention is described in detail below with reference to the accompanying drawings.

[0065] Embodiment 1:

[0066] like Figure 2 As shown, a chain measuring and elongation measuring mechanism comprises:

[0067] A measuring platform, comprising a fixed platform 11, a mobile platform 12 capable of sliding relative to the fixed platform 11, and a counterweight assembly for adjusting the position of the mobile platform 12;

[0068] A measuring assembly, which includes a measuring sensing assembly and a chain tensioning wheel 2 and a measuring wheel 3 installed on a mobile platform 12 to form a chain curved track channel. The measuring wheel 3 and the chain tensioning wheel 2 are installed on the same overall platform to ensure consistency during movement;

[0069] The chain 5 runs on the measuring platform along a closed-loop running track and passes through the chain curved track channel in the middle; when the chain 5 passes through the chain curved track channel, the measuring wheel 3 and the chain tensioning wheel 2 clamp the chain and rotate accordingly, and the chain plate on the chain 5 changes from a straight connection state to a curved connection state, so that the chain 5 can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain 5 is stretched.

[0070] In this embodiment, when the chain 5 passes through the chain tensioning wheel 2, the chain plate will bend from a straight connection state, so that the chain 5 can stretch out during operation. At this time, the counterweight assembly will pull the movable platform 12 to move backward, so as to keep the chain 5 stretched. When the chain 5 passes through the chain tensioning wheel 2, the measuring wheel 3 and the chain tensioning wheel 2 clamp the chain 5 and rotate accordingly, and the measuring sensing assembly can measure the length and elongation of the chain.

[0071] Furthermore, in this embodiment, it can also be considered that the chain 5 is composed of a chain plate, a chain ring, and a chain pin, and the chain runs on the measuring platform along a closed-loop operation trajectory according to a set trajectory, and the closed-loop operation trajectory of the chain includes an upper horizontal section of the chain, a downhill section of the chain, a lower horizontal section of the chain, and an uphill section of the chain.

[0072] Furthermore, in this embodiment, it can also be considered that the measurement sensing component includes a measurement start limit switch 10 set at one position of the closed-loop operation trajectory and a chain push head 9 set on the chain 5. When the chain push head 9 passes by, the measurement start limit switch 10 is triggered, and the sensing measurement starts.

[0073] Furthermore, in this embodiment, it can also be considered that the measuring sensing component also includes a limit switch 8 arranged at the uphill and downhill sections of the chain. When the chain push head 9 passes by, the limit switch 8 is triggered to compare the operation of the chain 5 on the closed-loop operation trajectory.

[0074] Furthermore, in this embodiment, it can also be considered that the central axis of the measuring wheel 3 is connected to the central axis of the measuring encoder 4, so that the measuring wheel 3 and the measuring encoder 4 rotate concentrically.

[0075] Furthermore, in this embodiment, it can also be considered that the mobile platform 12 is slidably mounted on the fixed platform 11 via a mobile track 19, and the mobile track 19 is arranged in pairs on the fixed platform 11, and the counterweight assembly includes at least two counterweights 1 connected to the same side of the mobile platform 12, and the counterweight 1 is located on the opposite side of the chain 5.

[0076] Furthermore, in this embodiment, it can also be considered that the mobile platform is also provided with an adjustment component, such as Figure 3-5 As shown, the adjustment component includes:

[0077] A measuring wheel adjustment beam 13 is connected to the adjustment beam running wheel, and a measuring wheel suspension beam 14 is provided at the lower part of the measuring wheel adjustment beam 13, on which a concentrically rotating measuring encoder 4 and a measuring wheel 3 are rotatably mounted; a measuring wheel axle 15 is rotatably provided on the measuring wheel suspension beam 14, the lower end of the measuring wheel axle 15 is connected to the measuring wheel 3, and the upper end is concentrically connected to the measuring encoder shaft. When the measuring wheel 3 rotates, the measuring wheel axle 15 also rotates and drives the measuring encoder shaft and the measuring encoder 4 to rotate;

[0078] The light wheel installation beam 16 is connected to the adjustment beam running wheel, and a tensioning wheel hanging beam 17 is arranged at the lower part of the light wheel installation beam 16, and a rotating light wheel shaft 18 is rotatably arranged on the tensioning wheel hanging beam 17, and the lower end of the rotating light wheel shaft 18 is connected to the chain tensioning wheel 2, and the chain tensioning wheel 2, the rotating light wheel shaft 18, the tensioning wheel hanging beam 17, and the light wheel installation beam 16 form a whole, and the beam running wheel moves forward and backward with the moving track by adjusting the beam running wheel;

[0079] There are two adjusting screws 29, and the measuring wheel adjusting beam 13 and the light wheel mounting beam 16 are connected by the adjusting screws 29, and the front-to-back adjustment between the measuring wheel adjusting beam 13 and the light wheel mounting beam 16 is realized by the lead screw adjusting screw 20. The measuring wheel adjusting beam, the light wheel mounting beam and the adjusting screws constitute a whole, and together constitute a mobile platform. Specifically: the light wheel mounting beam 16 and the measuring wheel adjusting beam 13 are connected by two adjusting screws 29, and the front-to-back adjustment between the light wheel mounting beam 16 and the measuring wheel adjusting beam 13 can be realized by eight lead screw adjusting screws 20, so that the measuring wheel 3 and the chain tensioning wheel 2 and the chain 5 maintain a fitting gap and rotate synchronously.

[0080] like Figure 3-5 As shown, the chain tensioning wheel 2 is mounted on the light wheel mounting beam 16, and has the characteristic of being able to move left and right on the moving track 19 as the chain is loosened or tightened; the measuring wheel 3 is mounted on the measuring wheel adjusting beam 13, and the measuring wheel 3, the measuring encoder, and the measuring wheel adjusting beam 13 are integrated and can move left and right on the moving track 7; the measuring wheel adjusting beam 13 adjusts the gap between the measuring wheel 3 and the chain tensioning wheel 2 clamping the chain 5 by adjusting the adjusting screw 29. The measuring wheel adjusting beam 13 is connected to the light wheel mounting beam 16 by adjusting the adjusting screw 29, and the screws at both ends are fixed to form an integral body. It is ensured that the measuring wheel 3 and the chain tensioning wheel 2 move left and right synchronously on the moving track 19 along with the measuring wheel adjusting beam 13 and the light wheel mounting beam 16.

[0081] The technical advantages of the chain measurement and elongation measurement mechanism in this embodiment are mainly reflected in the following aspects:

[0082] High equipment stability: Industrial-grade high-precision, high-reliability products manufactured by controller and sensor manufacturers such as Panasonic, OMRON, and Toyota Machinery are used to ensure that the equipment works stably and reliably, and there will be no abnormal errors or freezes in the measurement data and calculation process;

[0083] Convenient maintenance and upgrade: The equipment adopts relevant products and human-machine interfaces that comply with the standards of China, Japan, Europe and the United States, and uses international general interfaces and programming software;

[0084] Low cost: There are agents in China for spare parts purchase. They are also sold on online platforms such as Taobao and Misumi.

[0085] Embodiment 2:

[0086] A chain measuring and elongation measuring system, such as Figure 6 As shown, it includes a control cabinet 7 and the chain measurement and elongation measurement mechanism described in Example 1. The control cabinet is provided with a start button, a human-machine interaction interface (DM human-machine interaction interface) 6, a PLC, a counter, and a register. The measuring encoder, the measurement start limit switch, and the limit switch are respectively connected to the PLC through a communication cable. The measuring encoder is connected to the PLC X6A1 contact for transmitting a pulse signal; the measurement start limit switch is connected to the PLC X6A0 contact for sensing the start of measurement; the two limit switches are respectively connected to the PLC X6A3 and X6A4 contacts for comparing the operation of the chain on the closed-loop operation trajectory.

[0087] In this embodiment, when the chain 5 passes through the chain tensioning wheel 2, the chain plate will bend from a straight connection state, so that the storage place of the chain 5 will stretch during the operation. At this time, the counterweight 1 will pull the mobile platform 12 to move backward, so as to keep the chain 5 stretched; the axis of the measuring encoder 4 is connected to the central axis of the measuring wheel 3 to achieve concentric rotation. When the chain 5 passes through the chain tensioning wheel 2, the measuring wheel 3 and the chain tensioning wheel 2 clamp the chain 5 and rotate accordingly; wherein: the measuring encoder 4 and the PLC communication cable are connected to the PLC X6A1 contact by the encoder to transmit a pulse signal; when the chain push head 9 passes through the measurement start limit switch 10, the signal is transmitted to the LS X6A0 contact through the wire, and the measurement starts and the previous data is cleared; the limit switch 8 is installed at the uphill and downhill position of the chain. When the chain passes, the chain push head triggers the limit switch, which is sent to the X6A3 and X6A4 contacts respectively through the wire to compare the operation of the chain in the running loop.

[0088] The chain measurement and elongation measurement system operates in the following way:

[0089] S1. Click the X6A6 start button and the counter starts counting;

[0090] S2, when the chain triggers LS6A0 through the measurement start limit switch, pulses are input through X6A1, and the data register starts to accumulate;

[0091] S3. Calculate the circumference of the measuring wheel and the chain tensioning wheel according to their diameters;

[0092] S4. Calculate the number of revolutions that the measuring wheel needs to rotate according to the chain pitch reference and the circumference of the measuring wheel;

[0093] S5. According to the encoder resolution, the reference pulse number is obtained;

[0094] S6, after the measurement data is calculated, it is transferred to the corresponding register for storage through the WMOVE instruction;

[0095] S7, presenting the measurement data through the DM human-computer interaction interface;

[0096] It should be noted that when the X6A1 count reaches 109 times, the measurement of 108 chain links is completed.

[0097] Embodiment 3:

[0098] A chain measurement and elongation measurement method comprises the following steps:

[0099] S1. The chain runs on the measuring platform along the closed-loop running track according to the set track. When the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly. The chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched and the chain adjustment function can be realized.

[0100] S2. Click the start button of the control cabinet and the counter starts counting;

[0101] S3. When the chain pusher passes the measurement start limit switch, the signal is transmitted to the PLC X6A0 contact through the wire, and the measurement starts and the previous data is cleared. At the same time, the measurement encoder inputs pulses through the X6A1 contact, and the data register starts to accumulate. The signal of the limit switch is transmitted to the PLC X6A3 and X6A4 contacts through the wire to compare the operation of the chain on the closed-loop operation track.

[0102] S4. Calculate the chain tensioning wheel diameter and the measuring wheel circumference according to the chain tensioning wheel diameter and the measuring wheel diameter; calculate the number of revolutions that the measuring wheel needs to rotate according to the chain pitch reference and the measuring wheel circumference, and obtain the reference pulse number according to the measuring encoder resolution;

[0103] S5. After the measurement data is calculated, it is transmitted to the corresponding register for storage and presented through the human-computer interaction interface.

[0104] In order to verify the feasibility of the present invention, the following experiments and tests were carried out:

[0105] Verification experiment: The measurement results of the solution of the present invention are compared with the manual measurement results, and the manual error is strictly controlled. The data consistency rate reaches 95% by sampling and continuous measurement. The error is within ±1‰ and reaches 5%. It fully meets the measurement requirements given by the manufacturer.

[0106] Regarding elongation calculation, the formula derivation is valid and the results are all correct.

[0107] The online comparison function of the operation link can compare one by one and realize dynamic value comparison and fixed benchmark value comparison functions.

[0108] The measurement data recording function fully presents two sets of data comparison and recording functions on the touch screen.

[0109] The chain measurement and elongation measurement method in this embodiment can achieve the following functions:

[0110] 1. Online length measurement of chain of accumulation and release catenary conveyor;

[0111] 2. Online calculation of chain elongation of accumulation and release catenary conveyor;

[0112] 3. Online comparison function of operation links;

[0113] 4. The measurement data recording function can save 2 groups to achieve periodic comparison;

[0114] 5. Reduce manual operation time, manual errors, maintain consistency, and avoid safety hazards.

[0115] Embodiment 4:

[0116] A chain measuring and elongation measuring device for a stacking and releasing catenary conveyor, comprising the chain measuring and elongation measuring mechanism described in Example 1, such as Figure 7-8 As shown, the device specifically includes:

[0117] An accumulation and release catenary chain conveyor, comprising a fixed support 28 as a fixed platform, a mobile support 24 as a mobile platform, and a counterweight assembly for adjusting the position of the mobile support 24;

[0118] A measuring assembly, comprising a measuring sensing assembly, and a chain tensioning wheel and a measuring wheel mounted on a movable bracket 24 and forming a chain curved track channel 23;

[0119] The chain runs on the accumulation type catenary conveyor along a closed-loop running track and passes through the chain curved track channel 23 in the middle; when the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly, and the chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched.

[0120] Furthermore, it can also be considered in this embodiment that the counterweight assembly includes:

[0121] There are at least two rope wheels 21, and the rope wheels 21 are arranged on a fixed bracket 28;

[0122] The number of the counterweight boxes 32 is the same as the number of the rope pulleys 21. The counterweight boxes 32 are arranged on the fixed bracket 28. The counterweight blocks 31 are arranged in the counterweight boxes 32.

[0123] One end of the steel wire rope 22 is connected to the movable bracket 24 , passes through the rope pulley 21 in the middle, and the other end is connected to the counterweight block 31 in the counterweight box 32 .

[0124] Furthermore, in this embodiment, telescopic rails 30 are provided on both sides of the fixed bracket 28, and the movable bracket 24 is connected to the fixed bracket 28 through the telescopic rails 30. The movable bracket 24 is also provided with movable wheels 25 as running wheels and outer rollers 26 as guide wheels.

[0125] When the chain is stressed, the telescopic rail 30, the movable bracket 24, the chain curved rail channel 23, and the chain tensioning wheel 2 are connected by the steel wire rope 22 and pulled forward and backward by the counterweight block, so as to realize the chain adjustment function; during the movement, the telescopic rail 30, the movable bracket 24, the chain curved rail channel 23, and the chain tensioning wheel 2 are moved by the moving wheel 25 as a running wheel, and the outer roller 26 as a guide wheel; during the operation of the chain, the chain trolley rotates and moves with the chain tensioning wheel 2 through the chain curved rail channel 23, and the counterweight block 31 is pulled by the steel wire rope 22 in the counterweight box 32, and floats up and down under the guidance of the rope wheel 21.

[0126] The wiring diagram of the PLC control cabinet in the chain measurement and elongation measurement system in the above-mentioned embodiment 2 is analyzed as follows:

[0127] like Fig. 9 As shown, wiring Figure 1 It is the PLC and human-machine interface configuration diagram in the PLC control cabinet. The related contacts X6A0 measurement start LS, X6A1 A phase pulse, X6A2 B phase pulse, X6A3 limit switch, and X6A4 limit switch signal are connected to the wiring diagram IN-12 card.

[0128] like Fig.10 As shown, wiring Figure 2 This is the power supply circuit diagram of PLC, human-machine interface and related contacts. In this diagram, AVR1 is a 24V power supply, 1P1 and 1N124 power supplies are connected to PC10G CPU I / O power supply and DM-12WD3 touch screen screen respectively. 1P2 and 1N2PC10G OUT power supply.

[0129] like Fig.11 As shown, the analysis is as follows:

[0130] 000000X6A6After the measurement start button is pressed, K000 sets the relay to ON;

[0131] 000001C000 When the measurement counter is ON, reset the K000 measurement start relay;

[0132] 000002 After the chain rotates, the X6A0 drive unit push head detection is ON, the P001 rising differential instruction sends a pulse, and the counter C000 starts counting. When the chain push head detection switch touches 109 (108 chain links, the first touch is used as the starting position reference) times, the C000 measurement counting relay is ON. At this time, the reset position relay K000 is OFF, and the measurement ends. K000 OFF resets the C000021 measurement counting relay;

[0133] 000004 When X6A1 A phase counts ON, X6A2 B phase counts OFF. When the D0000 data register is less than the upper limit value decimal number 9999 and the condition is met, D0000 counts plus 1.

[0134] 000005 When X6A1 A phase counts OFF, X6A2 B phase counts ON. When the D0001 data register is less than the upper limit value decimal number 9999 and the condition is met, D0001 counts plus 1.

[0135] like Fig.12 As shown, the analysis is as follows:

[0136] 000006D0000 When the A phase count is less than or equal to D0001 B phase count, the B phase count - A phase count is stored in D0100;

[0137] 000007X6A0 When the push head of the drive unit detects ON, the condition that D0100 is less than 3 is met, and D0001 transmits data to D1000 to display 1;

[0138] 000008D0000 When the A phase count is greater than the B phase count in D0001, the A phase count minus the B phase count is stored in D0101;

[0139] 000009X6A0 When the push head detection of the drive unit is ON, the condition of D0101 being less than 3 is met, and D0000 transmits data to D1000 to display 1;

[0140] When the push head detection of 000010X060 driving part is ON, the data in the D1000 register is transferred to D1001 to display 2, the data in the D1001 register is transferred to D1002 to display 3, and the data in D1002 is transferred to D1003 to display 4; and so on. When the counter C0000 counts 109 times, it finally reaches D1108 to display 109;

[0141] like Fig.13 As shown, the analysis is as follows:

[0142] 000016 When the C000 measurement count reaches 109 times, C000 is turned on, and the difference between the chain length result stored in D1000 and the chain length reference in D0001 is stored in the D1100 display 1 minus reference register. Similarly, D1001 to D1108 are subtracted from the D0001 chain reference to obtain the elongation amount respectively;

[0143] like Fig.14 As shown, the analysis is as follows:

[0144] 000022 When the C000 measurement count reaches 109 times, C000 is turned on, and the chain elongation difference stored in D1100 is divided by the chain link reference length in D0001 and stored in the elongation register in D1300. Similarly, a total of 109 registers from D1108 are divided by D0001 and stored in D1301→D1408 respectively;

[0145] like Fig.15 As shown, the analysis is as follows:

[0146] 000028K000 normally closed point signal turns ON after measurement is completed, press M000 screen button to start saving measurement data. The data in the existing 109 data registers D1000→D1108 are transferred to the D2000→D2108 registers through WMOVE instruction.

[0147] like Fig.16 As shown, the analysis is as follows:

[0148] 000034K000 normally closed point signal is ON after the measurement is completed, press the M000 screen button to start saving the measurement data. The data of the S001B device clock year and month register is transferred to the D2095 register for storage, and similarly the S001A day and time data is transferred to the D2096 register for storage;

[0149] 000035K000 Normally closed point After the measurement is completed, the signal is ON. Press the M000 screen button to start the measurement data saving. D1300 Elongation saving channel display 1 data is transferred to D2300 data register for storage, and so on. The elongation data in D1301→D1408 is stored in D2301→D2408.

[0150] Application examples:

[0151] Applying the above embodiment, the finishing operation sequence is as follows:

[0152] After the S1.X6A6 measurement start button is pressed, the K000 setting relay turns ON. The chain measurement program starts;

[0153] S2. When the chain pusher triggers the X6A0 drive unit pusher detection to turn on, the P001 rising differential instruction sends a pulse, and the counter C000 starts counting. Each time X6A0 is triggered, C000 counts 1 and gradually accumulates. When X6A0 triggers 109 (108 chain links, the first touch is used as the starting position reference) times, the C000 measurement counter reaches the set value, the normally open contact is ON, and the normally closed contact is OFF. At this time, the reset position relay K000 is OFF, and the measurement ends. K000 OFF resets the C000 measurement counting relay;

[0154] S3. When X6A1 A phase counts ON, X6A2 B phase counts OFF. When the D0000 data register is less than the upper limit value decimal number 9999, the condition is met, and D0000 counts by 1. When X6A1 A phase counts OFF, X6A2 B phase counts ON. When the D0001 data register is less than the upper limit value decimal number 9999, the condition is met, and D0001 counts by 1.

[0155] S4. When D0000 A phase count is less than or equal to D0001 B phase count, B phase count - A phase count is stored in D0100. When the X6A0 drive unit push head detects ON, D0100 is less than 3 and the condition is met, D0001 transmits data to D1000 to display 1.

[0156] When S5.D0000 A phase count is greater than D0001 B phase count, A phase count minus B phase count is stored in D0101. When X6A0 drive unit push head detection is ON, D0101 is less than 3 and the condition is satisfied, D0000 transmits data to D1000 to display 1.

[0157] When the push head detection of S6.X060 driving part is ON, the data in the D1000 register is transferred to D1001 to display 2, the data in the D1001 register is transferred to D1002 to display 3, and the data in D1002 is transferred to D1003 to display 4; and so on. When the counter C0000 counts 109 times, it finally reaches D1108 to display 109;

[0158] When the measurement count of S7.C000 reaches 109 times, C000 is turned on, and the difference between the chain length result stored in D1000 and the chain length reference in D0001 is stored in the display 1 minus reference register D1100. Similarly, D1001 to D1108 are subtracted from the chain reference in D0001 to obtain the elongation amount respectively;

[0159] When the measurement count of S8.C000 reaches 109 times, C000 is turned on, and the chain elongation difference stored in D1100 is divided by the chain link reference length in D0001 and stored in the elongation rate register D1300. Similarly, the total of 109 registers from D1108 to D0001 are divided and stored in D1301→D1408.

[0160] After the measurement is completed, the signal of the normally closed point S9.K000 turns ON. Press the M000 screen button to start saving the measurement data. The data in the existing 109 data registers D1000→D1108 are transferred to the D2000→D2108 registers through the WMOVE instruction.

[0161] After the measurement is completed, the signal of the normally closed point S10.K000 turns ON. Press the M000 screen button to start saving the measurement data. The data of the year and month registers of the S001B device clock is transferred to the D2095 register for storage. Similarly, the data of the day and time of S001A is transferred to the D2096 register for storage.

[0162] S11.K000 normally closed point signal is ON after the measurement is completed, press the M000 screen button to start the measurement data saving. D1300 elongation saving channel display 1 data is transferred to D2300 data register for storage, and so on. The elongation data in D1301→D1408 is stored in D2301→D2408.

[0163] It should be noted that: when it exceeds the reference value or the measured value, the chain single pitch is elongated; when it decreases below the reference value or the measured value, the chain is stacked too loose.

[0164] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A chain measuring and elongation measuring mechanism, characterized in that: include: A measuring platform, comprising a fixed platform, a mobile platform capable of sliding relative to the fixed platform, and a counterweight assembly for adjusting the position of the mobile platform; A measuring assembly, comprising a measuring sensing assembly and a chain tensioning wheel and a measuring wheel mounted on a mobile platform and forming a chain curved track channel therebetween; The chain runs on the measuring platform along a closed-loop running track and passes through the chain curved track channel in the middle; when the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly, and the chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched.

2. A chain measuring and elongation measuring mechanism according to claim 1, characterized in that: The chain is composed of a chain plate, a chain ring and a chain pin. The chain runs on the measuring platform along a closed-loop running track according to a set track. The closed-loop running track of the chain includes an upper horizontal section of the chain, a downhill section of the chain, a lower horizontal section of the chain and an uphill section of the chain.

3. A chain measuring and elongation measuring mechanism according to claim 2, characterized in that: The measuring induction component comprises a measuring start limit switch arranged at one position of the closed-loop running track and a chain pusher arranged on the chain, and when the chain pusher passes by, the measuring start limit switch is triggered, and the sensing measurement starts; The measuring sensing assembly also includes limit switches arranged at the uphill and downhill sections of the chain. When the chain pusher passes by, the limit switches are triggered to compare the operation of the chain on the closed-loop operation track.

4. A chain measuring and elongation measuring mechanism according to claim 1, characterized in that: The central axis of the measuring wheel is connected to the central axis of the measuring encoder, so that the measuring wheel and the measuring encoder rotate concentrically.

5. A chain measuring and elongation measuring mechanism according to claim 1, characterized in that: The mobile platform is slidably mounted on the fixed platform via a mobile track, and the counterweight assembly comprises at least two counterweights connected to the same side of the mobile platform, and the counterweights are located on the opposite side of the chain.

6. A chain measuring and elongation measuring mechanism according to claim 1, characterized in that: The mobile platform is also provided with an adjustment component, which includes: A measuring wheel adjustment beam is connected to the adjustment beam running wheel, a measuring wheel suspension beam is arranged at the lower part of the measuring wheel adjustment beam, and a concentrically rotating measuring encoder and a measuring wheel are rotatably mounted on the measuring wheel suspension beam; A light wheel installation beam is connected to the adjustment beam running wheel, a tensioning wheel hanging beam is arranged at the lower part of the light wheel installation beam, a rotating light wheel shaft is rotatably arranged on the tensioning wheel hanging beam, and the lower end of the rotating light wheel shaft is connected to the chain tensioning wheel; There are two adjusting screws in total. The measuring wheel adjusting beam and the light wheel mounting beam are connected by the adjusting screws, and the front-rear adjustment between the measuring wheel adjusting beam and the light wheel mounting beam is realized by the lead screw adjusting screw.

7. A chain measurement and elongation measurement system, characterized in that: It comprises a control cabinet and a chain measurement and elongation measurement mechanism as described in any one of claims 1 to 6, wherein the control cabinet is provided with a start button, a human-machine interaction interface and a PLC, and the measurement encoder, the measurement start limit switch and the limit switch are respectively connected to the PLC via communication cables, the measurement encoder is connected to the PLC for transmitting pulse signals; the measurement start limit switch is connected to the PLC for sensing the start of measurement; the two limit switches are respectively connected to the PLC for comparing the operation conditions of the chain on the closed-loop operation trajectory.

8. A method for measuring a chain and elongation measurement system according to claim 7, characterized in that: The following steps are involved: S1. The chain runs on the measuring platform along the closed-loop running track according to the set track. When the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly. The chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched and the chain adjustment function can be realized. S2. Click the start button of the control cabinet and the counter starts counting; S3. When the chain pusher passes the measurement start limit switch, the signal is transmitted to the PLC through the wire, and the measurement starts and the previous data is cleared. At the same time, the encoder input pulse is measured, and the data register starts to accumulate. The signal of the limit switch is transmitted to the PLC through the wire to compare the operation of the chain on the closed-loop operation track. S4. Calculate the chain tensioning wheel diameter and the measuring wheel circumference according to the chain tensioning wheel diameter and the measuring wheel diameter; calculate the number of revolutions that the measuring wheel needs to rotate according to the chain pitch reference and the measuring wheel circumference, and obtain the reference pulse number according to the measuring encoder resolution; S5. After the measurement data is calculated, it is transmitted to the corresponding register for storage and presented through the human-computer interaction interface.

9. A chain measuring and elongation measuring device for a power-and-free catenary conveyor, characterized in that: The chain measuring and elongation measuring mechanism according to any one of claims 1 to 6 specifically comprises: An accumulation-and-release catenary chain conveyor, comprising a fixed support as a fixed platform, a mobile support as a mobile platform, and a counterweight assembly for adjusting the position of the mobile support; A measuring assembly, comprising a measuring induction assembly, and a chain tensioning wheel and a measuring wheel mounted on a movable bracket and forming a chain curved track channel therebetween; The chain runs on the accumulation type catenary conveyor along a closed-loop running track and passes through the chain curved track channel in the middle; when the chain passes through the chain curved track channel, the measuring wheel and the chain tensioning wheel clamp the chain and rotate accordingly, and the chain plate on the chain changes from a straight connection state to a curved connection state, so that the chain can be stretched in the running process. At the same time, the counterweight assembly pulls the mobile platform to move, so that the chain can be stretched.

10. A chain measuring and elongation measuring device for a power-and-free catenary conveyor according to claim 9, characterized in that: The counterweight assembly comprises: There are at least two rope wheels, and the rope wheels are arranged on a fixed bracket; The number of counterweight boxes is the same as the number of rope pulleys, and the counterweight boxes are arranged on a fixed bracket, and the counterweight boxes are provided with counterweight blocks; One end of the steel wire rope is connected to the movable bracket, passes through the rope pulley in the middle, and the other end is connected to the counterweight block in the counterweight box.

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