WO2017215196A1 - 一种链条预拉系统 - Google Patents
一种链条预拉系统 Download PDFInfo
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- WO2017215196A1 WO2017215196A1 PCT/CN2016/107215 CN2016107215W WO2017215196A1 WO 2017215196 A1 WO2017215196 A1 WO 2017215196A1 CN 2016107215 W CN2016107215 W CN 2016107215W WO 2017215196 A1 WO2017215196 A1 WO 2017215196A1
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- Prior art keywords
- chain
- guide wheel
- pretensioning
- fixed
- sprocket
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L9/00—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L19/00—Appurtenances for chain-making not restricted to any particular process
Definitions
- the invention relates to the field of chain production, and in particular to a chain pre-tensioning system.
- the chain is a multi-purpose mechanical basic part composed of rigid members and a flexible system. It is mainly used to meet the functional requirements of transmission, transportation and pulling.
- Roller chain is a widely used type of chain, which mainly consists of upper and lower outer sheets (outer chain plates), upper and lower inner sheets (internal link plates), pins, and large and small tubes (rollers and sleeves).
- the pre-drawing process is an indispensable part, wherein the pre-drawing process specifically refers to the saturation loading of the chain during the running of the chain, so as to discharge the residual debris in the chain and determine the length of the chain.
- the existing pre-drawing process lacks a detection and regulation mechanism, so the chain tends to be too small to be pulled to the limit state or broken due to excessive tension, resulting in the production of the chain in the same number of sections.
- Different lengths make the products of the same specification different in size and affect the user's use.
- the technical problem to be solved by the present invention is to overcome the defects of the foregoing technology and provide a chain pre-tensioning system, which has the advantages of simple structure and convenient operation, can realize real-time detection and adjustment of tensile force in the pre-tensioning process, and effectively improve production efficiency and Rate of qualified products.
- a chain pretensioning system comprising: a pretensioning device and a detecting device for sequentially passing the chain, and a control device communicably connected to the pretensioning device and the detecting device, wherein
- the pre-tensioning device provides an adjustable tension to tighten the chain
- a detecting device for detecting a tension state of the chain
- the control device receives a signal regarding the tension state of the chain from the detecting device, and instructs the pre-tensioning device to adjust the magnitude of the pulling force according to the signal.
- the pretensioning device comprises a power mechanism, a moving guide wheel, at least one inlet guide wheel, at least one out guide wheel, and a powered guide wheel for driving the chain to travel, wherein
- the chain sequentially bypasses the guide wheel, the movable guide wheel, the exit guide wheel and the powered guide wheel;
- the power mechanism is coupled to the axle of the moving guide wheel to adjust the amount of tension by driving the guide wheel to move radially.
- the pretensioning system includes three inlet guide wheels staggered at the inlet end of the pretensioning device, and two outlet guide wheels staggered at the outlet end of the pretensioning device.
- the detecting device includes a chain in and out mechanism, a fixing plate, a moving sprocket, a measuring tool, and a tension spring, wherein
- the chain enters the detecting device through the chain feeding and unloading mechanism, and leaves the detecting device through the chain in and out mechanism after bypassing the moving sprocket to ensure that the number of chain links located in the detecting device is a fixed value;
- a slider is fixed on the axle of the moving sprocket, and a part of the slider is defined in the sliding rail disposed on the fixed plate to enable the movable sprocket to move radially relative to the fixed plate;
- the measuring tool is fixed on the fixing plate for measuring the distance between the moving sprocket and the chain in and out mechanism;
- the tension spring is fixed to the fixed plate at one end, and the opposite end is fixed to the axle of the moving sprocket.
- the chain entry and exit mechanism comprises a fixed sprocket, a first small guide wheel and a second small guide wheel, and the first small guide wheel and the second small guide wheel are disposed on a side of the fixed sprocket away from the moving sprocket.
- the power mechanism is a cylinder.
- a chain pre-tensioning method comprising the following steps:
- Preparation step the chain is sequentially bypassed by the advancement guide wheel, the movable guide wheel, the exit guide wheel, the power guiding wheel, and the first small guide wheel, the fixed chain wheel, the moving chain wheel, and the chain of the detecting device. a wheel and a second small guide wheel to drive the chain under the drive of the powered guide wheel;
- the detecting device automatically measures the distance between the moving sprocket and the fixed sprocket, and sends the measured value to the control device;
- Adjusting step The control device compares the received measured value with the maximum distance and the minimum distance of the predetermined distance range, and adjusts the magnitude of the pulling force according to the comparison indicating the pre-tensioning device.
- the adjustment step includes:
- control device instructs the power mechanism of the pre-tensioning device to reduce the pulling force until the measured value decreases within a predetermined distance range
- control device instructs the power mechanism of the pre-tensioning device to increase the pulling force until the measured value increases within a predetermined distance range.
- control device presets the minimum tensile force and the maximum tensile force, and when the tensile force value decreases below the minimum tensile force value or above the maximum tensile force value, the chain pre-tensioning system automatically stops running and sends out when the measured value has not recovered to within the predetermined distance range. alarm.
- the detecting device has the advantages of simple structure, convenient operation, measurement by using a measuring tool, and high precision of the measuring result; the control device indicates that the pre-tensioning device is provided by the tension state of the chain detected by the detecting device.
- the tension of the chain is adjusted in time to balance the tension between the chain and the tension to ensure uniform size and stability of the produced chain.
- Figure 1 is a schematic view of the automatic chain production system of the present invention
- Figure 2 is a schematic view of the detecting device of the present invention.
- Figure 3 is a schematic illustration of a measurement tool of the present invention.
- pre-tensioning device 110 power mechanism, 120 moving guide wheel, 130-introduction wheel, 140-out guiding wheel, 200 detecting device, 210 chain feeding mechanism, 211 fixed chain wheel, 212 first small guide wheel, 213 second small guide Wheel, 220 fixed plate, 230 moving sprocket, 240 measuring tool, 241 grating main body, 242 reading head, 250 tension spring, 300 control device, 400 chain.
- the chain pretensioning system of the present invention includes a pretensioning device 100, a detecting device 200, and a control device 300, and the chain 400 sequentially passes through the pretensioning device 100 and the detecting device 200.
- the pre-tensioning device 100 can provide the chain 400 with an adjustable tension
- the detecting device 200 can detect the tension state of the chain 400.
- the control device 300 communicably connects the pre-tensioning device 100 and the detecting device 200 to receive a signal about the tension state of the chain 400 from the detecting device 200, and according to the signal, the pre-tensioning device 100 is instructed to adjust the magnitude of the pulling force to realize the pulling force and the chain. Real-time monitoring and balance of 400 tension status.
- the pre-tensioning device 100 generally includes a power mechanism 110 that provides an adjustable tension, a moving guide wheel 120 that is coupled to the power mechanism 110, an intake guide wheel 130 that is disposed at an inlet end of the pre-tensioning device 100, and a pre-tensioning device.
- three inlet guide wheels 130 are staggered at the inlet end (left side in Fig. 1) of the pretensioning device 100, and at the outlet end of the pretensioning device 100 (right side in Fig.
- Two out-of-direction guide wheels 140 are arranged in a staggered manner, and the powered guide wheels 150 are disposed on one side of the outlet end of the guide wheel 140.
- the chain sequentially travels around the guide wheel 130, the movable guide wheel 120, the exit guide wheel 140, and the powered guide wheel 150.
- the moving guide wheel 120 is radially moved by the drive mechanism 110 to tension or loosen the chain 400 by increasing or decreasing the pulling force on the chain 400.
- a cylinder can be used as the power mechanism 120.
- FIG. 1 is a partial view and FIG. 2 is a schematic view of a detecting device 200 of the present invention.
- the detection device 200 generally includes a chain entry and exit mechanism 210, a fixed plate 220, a moving sprocket 230, a measuring tool 240, and a tension spring 250.
- the chain 400 from the pretensioning device 100 enters the detecting device 200 through the chain entry and exit mechanism 210, and exits the detecting device 200 from the chain in and out mechanism 210 again after bypassing the moving sprocket 230.
- the chain entry and exit mechanism 210 can ensure that the number of chain links located in the detecting device 200 is constant to facilitate control of the length of the constant number of chains within a predetermined range.
- the chain entry and exit mechanism 210 includes a fixed sprocket 211 and The first small guide wheel 212 and the second small guide wheel 213 are disposed on a side of the fixed sprocket 211 away from the movable sprocket 230.
- the chain 400 emerging from the pretensioning device 100 can sequentially bypass one side (the left side in FIG. 2) of the first small guide wheel 212 and the fixed chain wheel 211 into the detecting device 200, and sequentially after bypassing the moving chain wheel 230.
- the other side (the right side in FIG.
- the first small guide wheel 212 and the second small guide wheel 213 may be as close as possible to the fixed chain wheel 211 to bring the chain 400 into full contact with the fixed chain wheel 211 to prevent the chain from coming off the fixed chain wheel 211.
- the moving sprocket 230 is movably coupled to the fixed plate 220.
- a slider is fixed on the axle of the movable pulley 230, and a part of the slider is defined in the sliding rail disposed on the fixed plate 220, so that the movable sprocket 230 can be relatively fixed with respect to the fixed plate 220.
- a measuring tool 240 for measuring the distance between the moving sprocket 230 and the fixed sprocket 211 is also fixed to the fixing plate 220.
- the grating scale shown in FIG. 3 is used as the measuring tool 240.
- the scale main body 241 can be fixed to the fixing plate 220, and the reading head 242 can be connected to the slider on the rotating shaft of the movable pulley 230.
- One end of the tension spring 250 is fixed to the fixed plate 220, and the other end is fixed to the axle of the moving sprocket 230 to finely adjust the pulling force supplied to the chain 400.
- the chain pre-tensioning system of the present application mainly operates by the following steps:
- Preparation step the chain 400 is sequentially bypassed by the advance guide wheel 130 of the pre-tensioning device 100, the movable guide wheel 120, the exit guide wheel 140, the powered guide wheel 150, and the first small guide wheel 212 and the fixed sprocket of the detecting device 200. 211, the movable sprocket 230, the fixed sprocket 211 and the second small guide wheel 213, so that the chain 400 travels under the driving of the powered guide wheel 150;
- the detecting device 200 automatically measures the distance between the moving sprocket 230 and the fixed sprocket 211, and sends the measured value to the control device 300;
- Adjusting step The control device 300 compares the received measured value with the maximum distance and the minimum distance of the predetermined distance range, and according to the comparison, the pre-tensioning device 100 adjusts the magnitude of the pulling force.
- the predetermined distance range may be set to a predetermined number of segments passing through the detecting device 200
- the control device 300 indicates the power mechanism 110 of the pretensioning device 100. Increase the pulling force until the measured value increases within the predetermined distance range. This ensures that the length of the constant number of chains 400 varies within a predetermined range.
- the control device can preset the minimum tensile force and the maximum tensile force. When the tensile force value decreases below the minimum tensile force value or increases to the maximum tensile force value and the measured value has not recovered to within the predetermined distance range, the chain may have appeared. When the sprocket is broken, the chain pre-tensioning system can automatically stop running and issue an alarm.
- the above detection steps and adjustment steps are performed in real time during the chain travel process, so that the chain tension state and the tension force are balanced, ensuring uniformity of the produced chain, good stability, and effectively improving production efficiency.
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Abstract
一种链条预拉系统，包括供链条（400）依次穿过的预拉装置（100）和检测装置（200），以及可通信地连接至预拉装置（100）和检测装置（200）的控制装置（300）。预拉装置（100）提供大小可调节的拉力以拉紧链条（400）；检测装置（200）用于检测链条（400）的张紧状态；控制装置（300）从检测装置（200）接收关于链条（400）张紧状态的信号，并根据信号指示预拉装置（100）对拉力的大小进行调整。
Description
本发明涉及链条生产领域，具体涉及一种链条预拉系统。
链条是一种由刚性构件组成挠性系统的多用途机械基础件，主要用于满足传动、输送、拉曳等功能要求。滚子链条是一种广泛使用的链条类型，其主要由上下外片(外链板)、上下内片(内链板)、销轴、大小管(滚子和套筒)组成。在链条生产中，预拉工序是必不可少的一个环节，其中预拉过程具体指在链条行进过程中对其饱和加载，以便排出链条内残存的碎屑以及确定链条长度等。然而，现有的预拉工序缺少检测及调控机制，因此链条往往会因拉力过小而不能被预拉到极限状态或因拉力过大而断裂，导致生产出来的链条在节数相同的情况下长度不同，使同一规格的产品尺寸不一、影响用户使用。
由此可见，市场上亟待出现一种新型的链条预拉系统，能够实现对链条预拉过程的监控以及调整。
发明内容
本发明所要解决的技术问题在于克服前述技术存在的缺陷，提供一种链条预拉系统，该系统结构简单、操作方便，能够在预拉过程中实现拉力的实时检测与调整，有效提高生产效率和产品合格率。
为解决上述技术问题，本发明采取的技术方案如下：
一种链条预拉系统，包括：供链条依次穿过的预拉装置和检测装置，以及通信地连接至预拉装置和检测装置的控制装置，其中
预拉装置提供大小可调节的拉力以拉紧链条；
检测装置用于检测链条的张紧状态；以及
控制装置从检测装置接收关于链条张紧状态的信号，并根据信号指示预拉装置对拉力的大小进行调整。
进一步地，预拉装置包含动力机构、动导向轮、至少一个进导向轮、至少一个出导向轮以及用于驱动链条行进的带动力导向轮，其中
链条依次绕过进导向轮、动导向轮、出导向轮以及带动力导向轮；
动力机构连接至动导向轮的轮轴，以通过驱动导向轮径向移动来调整拉力的大小。
进一步地，预拉系统包含交错分布于预拉装置入口端的三个进导向轮，以及交错分布于预拉装置出口端的两个出导向轮。
进一步地，检测装置包括链条进出机构、固定板、动链轮、测量工具以及拉力弹簧，其中
链条通过链条进出机构进入检测装置，并在绕过动链轮之后通过链条进出机构离开检测装置，以确保位于检测装置内的链条节数为定值；
动链轮的轮轴上固定有滑块，并且滑块的一部分限定于设置在固定板上的滑轨内，以使动链轮能够相对于固定板径向移动；
测量工具固定于固定板上，用于测量动链轮与链条进出机构之间的距离；
拉力弹簧一端固定至固定板上，相对的另一端固定至动链轮的轮轴上。
进一步地，链条进出机构包含一个定链轮、第一小导轮和第二小导轮，第一小导轮和第二小导轮设置在定链轮远离动链轮的一侧。
进一步地，动力机构为油缸。
一种链条预拉紧方法，包含以下步骤：
准备步骤：将链条依次绕过预拉装置的进导向轮、动导向轮、出导向轮、带动力导向轮、以及检测装置的第一小导轮、定链轮、动链轮、定链
轮以及第二小导向轮，使链条在带动力导向轮的驱动下行进；
检测步骤：检测装置自动测量动链轮与定链轮之间的距离，并将测量值发送至控制装置；
调整步骤：控制装置将接收到的测量值与预定距离范围的最大距离和最小距离进行比较，并根据比较指示预拉装置对拉力的大小进行调整。
进一步地，调整步骤包含：
当测量值大于最大距离时，控制装置指示预拉装置的动力机构减小拉力，直至测量值减小至预定距离范围内为止；
当测量值小于最小距离时，控制装置指示预拉装置的动力机构增大拉力，直至测量值增加至预定距离范围内为止。
进一步地，控制装置预先设定最小拉力和最大拉力，当拉力值降低至最小拉力值以下或最大拉力值以上后测量值仍未恢复至预定距离范围内时，链条预拉系统自动停止运行并发出警报。
在本发明提供的一种链条预拉系统中，检测装置结构简单，操作方便，采用测量工具进行测量，测量结果精度高；控制装置凭借检测装置检测到的链条张紧状态指示预拉装置对提供给链条的拉力进行适时调整，使链条张紧状态与拉力实现平衡，确保生产出的链条尺寸统一、稳定性好。
图1为本发明的链条自动生产系统的示意图；
图2为本发明的检测装置的示意图；
图3为本发明的测量工具的示意图。
附图标记说明：
100预拉装置，110动力机构，120动导向轮，130进导向轮，140出导向轮，200检测装置，210链条进出机构，211定链轮，212第一小导轮，213第二小导轮，220固定板，230动链轮，240测量工具，241光栅尺主体，242读数头，250拉力弹簧，300控制装置，400链条。
为充分公开的目的，以下将结合实施例对本发明做进一步详细说明。应当理解，以下所述的具体实施例仅用于解释本发明，并非用于限定本发明的保护范围。
如图1所示，本发明的链条预拉系统包括预拉装置100、检测装置200以及控制装置300，链条400依次穿过预拉装置100和检测装置200。其中，预拉装置100可以为链条400提供大小可调节的拉力，检测装置200则可以检测链条400的张紧状态。控制装置300通信地连接预拉装置100和检测装置200，以便从检测装置200接收关于链条400张紧状态的信号，并根据该信号指示预拉装置100对拉力的大小进行调整，实现拉力与链条400张紧状态的实时监控与平衡。
具体来说，预拉装置100总体包括提供可调节拉力的动力机构110、轮轴连接至该动力机构110的动导向轮120、设置于预拉装置100入口端的进导向轮130、设置于预拉装置100出口端的出导向轮140以及用于驱动链条400行进的带动力导向轮150。在图1所示的实施例中，在预拉装置100入口端(图1中的左侧)交错布置有三个进导向轮130、并且在预拉装置100出口端(图1中的右侧)交错布置有两个出导向轮140，带动力导向轮150则设置于出导向轮140偏出口端的一侧。链条依次绕过进导向轮130、动导向轮120、出导向轮140以及带动力导向轮150行进。动导向轮120在动力机构110的驱动下径向移动，以通过增大或减小对链条400的拉力来拉紧或放松链条400。在本发明的实施例中，可以使用油缸作为动力机构120。
图1的部分视图以及图2为本发明的检测装置200的示意图。如图所示，检测装置200总体包含链条进出机构210、固定板220、动链轮230、测量工具240以及拉力弹簧250。从预紧装置100出来的链条400通过链条进出机构210进入检测装置200，并在绕过动链轮230后再次从链条进出机构210离开检测装置200。链条进出机构210能够确保位于检测装置200内的链条节数为定值，以利于将恒定节数的链条的长度控制在预定的范围内。在本发明的实施例中，链条进出机构210包含一个定链轮211和
设置在定链轮211远离动链轮230的一侧的第一小导轮212和第二小导轮213。这样从预紧装置100出来的链条400可以依次绕过第一小导轮212和定链轮211的一侧(图2中为左侧)进入检测装置200，在绕过动链轮230后依次绕过定链轮211的另一侧(图2中为右侧)离开检测装置200，由于链条400进、出检测装置200均经过同一定链轮211，便可以保证每当有一节链条进入检测装置200的同时会有一节链条离开检测装置200，从而确保位于检测装置200内的链条节数为定值。优选地，第一小导轮212和第二小导轮213可以尽量靠近定链轮211，以使链条400与定链轮211充分接触，防止链条脱离定链轮211。
动链轮230可移动地连接至固定板220上。在本发明的实施例中，动滑轮230的轮轴上固定有滑块，并且该滑块的一部分限定于设置在固定板220上的滑轨内，以使动链轮230能够相对于固定板220径向移动。固定板220上还固定有用于测量动链轮230与定链轮211之间距离的测量工具240。在本发明的实施例中使用图3所示的光栅尺作为测量工具240，具体地，可将光栅尺主体241固定于固定板220上，并将读数头242与动滑轮230轮轴上的滑块连接。拉力弹簧250的一端固定至固定板220上，相对的另一端则固定至动链轮230的轮轴上，以便对提供给链条400的拉力进行微调。
本申请的链条预拉紧系统主要通过以下步骤进行操作：
准备步骤：将链条400依次绕过预拉装置100的进导向轮130、动导向轮120、出导向轮140、带动力导向轮150、以及检测装置200的第一小导轮212、定链轮211、动链轮230、定链轮211以及第二小导向轮213，使链条400在带动力导向轮150的驱动下行进；
检测步骤：检测装置200自动测量动链轮230与定链轮211之间的距离，并将测量值发送至控制装置300；
调整步骤：控制装置300将接收到的测量值与预定距离范围的最大距离和最小距离进行比较，并根据该比较指示预拉装置100对拉力的大小进行调整。
在调整步骤中，预定距离范围可设定为经过检测装置200的预定节数
链条400的长度在预定范围内时所对应的动链轮230与定链轮211之间的距离范围。因此，当测量值大于最大距离时，说明恒定节数链条400总长度过长，即链条400承受的拉力过大，控制装置300指示预拉装置100的动力机构110减小拉力，直至测量值减小至预定距离范围内为止；相反，当测量值小于最小距离时，说明恒定节数链条400总长度过短，即链条400承受的拉力过小，控制装置300指示预拉装置100的动力机构110增大拉力，直至测量值增加至预定距离范围内为止。这样便可以确保恒定节数链条400的长度在预定范围内变化。优选地，控制装置可以预先设定最小拉力和最大拉力，当拉力值降低至最小拉力值以下或增大至最大拉力值以上后测量值仍未恢复至预定距离范围内时，有可能已经出现链条脱离链轮等故障，此时链条预拉系统可以自动停止运行并发出警报。
上述检测步骤和调整步骤均在链条行进过程中实时进行，使链条张紧状态与拉力实现平衡，确保生产出的链条尺寸统一、稳定性好，并且有效提高了生产效率。
以上所述实施例仅表达了本发明的实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
Claims (9)
- 一种链条预拉系统，其特征在于，包括：供链条依次穿过的预拉装置和检测装置，以及通信地连接至所述预拉装置和所述检测装置的控制装置，其中所述预拉装置提供大小可调节的拉力以拉紧链条；所述检测装置用于检测所述链条的张紧状态；以及所述控制装置从所述检测装置接收关于所述链条张紧状态的信号，并根据所述信号指示所述预拉装置对所述拉力的大小进行调整。
- 根据权利要求1所述的链条预拉系统，其特征在于，所述预拉装置包含动力机构、动导向轮、至少一个进导向轮、至少一个出导向轮以及用于驱动所述链条行进的带动力导向轮，其中所述链条依次绕过所述进导向轮、所述动导向轮、所述出导向轮以及所述带动力导向轮；所述动力机构连接至所述动导向轮的轮轴，以通过驱动所述动导向轮径向移动来调整所述拉力的大小。
- 根据权利要求2所述的链条预拉系统，其特征在于，所述预拉系统包含交错分布于所述预拉装置入口端的三个所述进导向轮，以及交错分布于所述预拉装置出口端的两个所述出导向轮。
- 根据权利要求1或2所述的链条预拉系统，其特征在于，所述检测装置包括链条进出机构、固定板、动链轮、测量工具以及拉力弹簧，其中所述链条通过所述链条进出机构进入所述检测装置，并在绕过所述动链轮之后通过所述链条进出机构离开所述检测装置，以确保位于所述检测装置内的链条节数为定值；所述动链轮的轮轴上固定有滑块，并且所述滑块的一部分限定于设置在所述固定板上的滑轨内，以使所述动链轮能够相对于所述固定板径向移动；所述测量工具固定于所述固定板上，用于测量所述动链轮与所述链条进出机构之间的距离；所述拉力弹簧一端固定至所述固定板上，相对的另一端固定至所述动链轮的轮轴上。
- 根据权利要求4所述的链条预拉系统，其特征在于，所述链条进出机构包含一个定链轮、第一小导轮和第二小导轮，所述第一小导轮和所述第二小导轮设置在所述定链轮远离所述动链轮的一侧。
- 根据权利要求2所述的链条预拉系统，其特征在于，所述动力机构为油缸。
- 一种链条预拉紧方法，其特征在于，包含以下步骤：准备步骤：将链条依次绕过预拉装置的进导向轮、动导向轮、出导向轮、带动力导向轮、以及检测装置的第一小导轮、定链轮、动链轮、定链轮以及第二小导向轮，使所述链条在所述带动力导向轮的驱动下行进；检测步骤：所述检测装置自动测量所述动链轮与所述定链轮之间的距离，并将测量值发送至控制装置；调整步骤：所述控制装置将接收到的所述测量值与预定距离范围的最大距离和最小距离进行比较，并根据所述比较指示所述预拉装置对拉力的大小进行调整。
- 根据权利要求7所述的方法，其特征在于，所述调整步骤包含：当所述测量值大于所述最大距离时，所述控制装置指示所述预拉装置的所述动力机构减小拉力，直至所述测量值减小至所述预定距离范围内为止；当所述测量值小于所述最小距离时，所述控制装置指示所述预拉装置的所述动力机构增大拉力，直至所述测量值增加至所述预定距离范围内为止。
- 根据权利要求8所述的方法，其特征在于，所述控制装置预先设定最小拉力和最大拉力，当拉力值降低至所述最小拉力值以下或增大至最大 拉力值以上后所述测量值仍未恢复至所述预定距离范围内时，所述链条预拉系统自动停止运行并发出警报。
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| CN106679907B (zh) * | 2016-12-05 | 2019-02-15 | 浙江双鸟机械有限公司 | 起重链条拉力试验的涨紧试拉方法 |
| CN106546428B (zh) * | 2016-12-05 | 2023-05-05 | 浙江双鸟机械有限公司 | 起重链条单环弯曲力测试机 |
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