A method and device for monitoring the operation of a rotating drag chain

Abstract

The present invention discloses a method for monitoring the operation of a rotating cable carrier, including a detection step, a judgment step, and a shutdown step. The detection step specifically includes detecting the position coordinates of the rotating cable carrier to obtain a feedback signal of the cable carrier position state, and detecting the relative rotation angle between the first rotating part and the second rotating part to obtain a frame rotation signal; the judgment step specifically includes processing the feedback signal of the cable carrier position state and the frame rotation signal to judge whether the position coordinates of the rotating cable carrier match the relative rotation angle between the first rotating part and the second rotating part; the shutdown step specifically includes when the position coordinates of the rotating cable carrier do not match the relative rotation angle between the first rotating part and the second rotating part, it indicates that there is an abnormal situation in the actual position coordinates of the rotating cable carrier. At this time, both the first rotating part and the second rotating part stop rotating to avoid potential safety hazards caused by abnormal suction between the rotating cable carrier and the rotating part of the frame. The present invention also discloses a device for monitoring the operation of a rotating cable carrier.

Description

Technical Field

[0001] The present invention relates to the technical field of drag chain detection, and more specifically, to a method and a device for monitoring the operation of a rotary drag chain. Background Art

[0002] Single-Photon Emission Computed Tomography (SPECT) is a commonly used clinical imaging device in the field of nuclear medicine. It can evaluate the functions of organs such as the thyroid, kidneys, heart, brain, and lungs, and plays an important role in the diagnosis of related diseases. In addition, SPECT also plays a key role in the clinical diagnosis and staging of a variety of malignant tumors. Compared with traditional gamma cameras, SPECT can not only reflect the function and morphology of organs and tissues, but also observe the changes in organs and diseases in three dimensions, and display this information through tomographic imaging in different directions.

[0003] The rotation angle of the SPECT rack is usually greater than 360° but less than 720°. The cable connection between the fixed part and the rotating part of the rack is arranged in the form of a rotating drag chain. In this structure, the rotating drag chain is in a bidirectional bending state inside the rack. One side of the rotating drag chain fits tightly with the fixed part of the rack by its own gravity, and the other side is attracted to the rotating part of the rack through a soft magnet. During the rotation of the rotating part of the rack, if the attraction between the soft magnet and the rotating drag chain is abnormal, it may cause the rotating drag chain to fall off, the rotating drag chain and its internal cables to be damaged, and pose a safety risk to equipment and personnel.

[0004] Therefore, how to avoid the potential safety hazard caused by the abnormal attraction between the rotating drag chain and the rotating part of the frame has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a method for monitoring the operation of a rotary drag chain to avoid potential safety hazards caused by abnormal engagement of the rotary drag chain with the rotating part of the frame.

[0006] Another object of the present invention is to provide a rotating drag chain operation monitoring device for detecting the motion trajectory of the rotating drag chain on the frame through the above-mentioned rotating drag chain operation monitoring method.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A method for monitoring the operation of a rotating drag chain is used to detect the movement trajectory of the rotating drag chain on a rack. The rack includes a fixed part, a first rotating part, and a second rotating part. The first rotating part and the second rotating part are coaxially arranged, and the first rotating part is disposed on the outer ring of the second rotating part. At least one of the first rotating part and the second rotating part is rotatable relative to the fixed part. The rotating drag chain is disposed between the first rotating part and the second rotating part, and one end of the rotating drag chain is connected to the inner wall of the first rotating part, and the other end is connected to the outer wall of the second rotating part. The method includes the steps:

[0009] Detection: Detect the position coordinates of the rotating drag chain and obtain a feedback signal of the drag chain position state. Detect the relative rotation angle between the first rotating part and the second rotating part and obtain a rack rotation signal;

[0010] Judgment: Process the feedback signal of the drag chain position state and the rack rotation signal to determine whether the position coordinates of the rotating drag chain match the relative rotation angle between the first rotating part and the second rotating part;

[0011] Shutdown: When the position coordinates of the rotating drag chain do not match the relative rotation angle between the first rotating part and the second rotating part, the first rotating part and the second rotating part stop rotating.

[0012] Optionally, in the above method for monitoring the operation of a rotating drag chain, the detection step includes a first step and a second step. The first step is specifically to detect the position coordinates of the rotating drag chain and obtain the feedback signal of the drag chain position state;

[0013] The first rotating part is rotatable relative to the fixed part, and the second rotating part is fixed in position relative to the fixed part. The second step is specifically to detect the rotation angle of the first rotating part and obtain the rack rotation signal.

[0014] Optionally, in the above method for monitoring the operation of a rotating drag chain, the first step is specifically:

[0015] Detect the fitting length between the rotating drag chain and the inner wall of the first rotating part to obtain the position coordinates of the rotating drag chain, and / or detect the fitting length between the rotating drag chain and the outer wall of the second rotating part to obtain the position coordinates of the rotating drag chain.

[0016] Optionally, in the above method for monitoring the operation of a rotating drag chain, the first step is specifically to detect the position coordinates of the rotating drag chain by a first detection component and obtain the feedback signal of the drag chain position state;

[0017] The first detection component includes at least one of a pressure sensor, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

[0018] Optionally, in the above-mentioned method for monitoring the operation of a rotating drag chain, a plurality of the first detection components are arranged at intervals on the first rotating part, so as to obtain the fitting length between the rotating drag chain and the inner wall of the first rotating part according to the number or position of the first detection components triggered by the rotating drag chain; and / or,

[0019] A plurality of the first detection components are arranged at intervals on the second rotating part, so as to obtain the fitting length between the rotating drag chain and the outer wall of the second rotating part according to the number or position of the first detection components triggered by the rotating drag chain.

[0020] Optionally, in the above-mentioned method for monitoring the operation of a rotating drag chain, the second step specifically is to detect the rotation angle of the first rotating part through a second detection component to obtain the frame rotation signal;

[0021] The second detection component includes at least one of an encoder, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

[0022] Optionally, in the above-mentioned method for monitoring the operation of a rotating drag chain, a gear to be measured is rotatably arranged on the fixed part, the gear to be measured meshes with the meshing teeth arranged on the outer wall of the first rotating part, and the second detection component is used to detect the rotation angle of the gear to be measured to obtain the rotation angle of the first rotating part.

[0023] Optionally, in the above-mentioned method for monitoring the operation of a rotating drag chain, an alarm step is further included after the shutdown step, and the alarm step is to send an alarm signal through an alarm device.

[0024] Optionally, in the above-mentioned method for monitoring the operation of a rotating drag chain, detecting the movement track of the rotating drag chain on the frame by using the above-mentioned method for monitoring the operation of a rotating drag chain includes:

[0025] The first detection component is at least arranged on one of the first rotating part and the second rotating part, and is used to detect the fitting length between the rotating drag chain and the first rotating part and / or the second rotating part, and obtain the drag chain position state feedback signal;

[0026] The second detection component is used to detect the relative rotation angle between the first rotating part and the second rotating part, and obtain the frame rotation signal;

[0027] A controller, configured to receive the feedback signal of the drag chain position state and the rack rotation signal, and determine whether the position coordinates of the rotating drag chain match the relative rotation angle between the first rotating part and the second rotating part based on the feedback signal of the drag chain position state and the rack rotation signal. If they do not match, the controller is configured to control the first rotating part and the second rotating part to stop rotating.

[0028] Optionally, in the above rotating drag chain operation monitoring device, the rotating drag chain is attracted to the first rotating part through a magnetic attraction assembly. The magnetic attraction assembly includes a first attraction part and a second attraction part. The first attraction part is configured to be disposed on the rotating drag chain, and the second attraction part is configured to be disposed on the inner wall of the first rotating part, and the first attraction part and the second attraction part are configured to attract each other.

[0029] The rotating drag chain operation monitoring method provided by the present invention includes a detection step, a judgment step, and a shutdown step. The detection step specifically includes detecting the position coordinates of the rotating drag chain to obtain a feedback signal of the drag chain position state, and detecting the relative rotation angle between the first rotating part and the second rotating part to obtain a rack rotation signal. The judgment step specifically includes processing the feedback signal of the drag chain position state and the rack rotation signal to determine whether the position coordinates of the rotating drag chain match the relative rotation angle between the first rotating part and the second rotating part. The actual movement position and bending state of the rotating drag chain can be obtained from the feedback signal of the drag chain position state, and the theoretical movement position and bending state of the rotating drag chain can be obtained from the rack rotation signal. When the two do not match, it indicates that there is an abnormal situation in the actual position coordinates of the rotating drag chain. The shutdown step specifically includes that when the position coordinates of the rotating drag chain do not match the relative rotation angle between the first rotating part and the second rotating part, both the first rotating part and the second rotating part stop rotating.

[0030] Compared with the prior art, the rotating drag chain operation monitoring method provided by the present invention detects the running track of the rotating drag chain in real time, and compares and adapts it with the relative rotation angle between the first rotating part and the second rotating part detected in real time. Once there is a deviation or mismatch between the two, it can be determined that there is an abnormal situation in the position coordinates of the rotating drag chain. At this time, the rack can be controlled to stop, and the operator can be reminded to perform maintenance and inspection to avoid potential safety hazards caused by abnormal attraction between the rotating drag chain and the rotating part of the rack.

[0031] The rotating drag chain operation monitoring device provided by the present invention is used to detect the movement trajectory of the rotating drag chain on the frame through the above-mentioned rotating drag chain operation monitoring method, and includes a first detection component, a second detection component and a controller. The first detection component is at least arranged on one of the first rotating part and the second rotating part, and is used to detect the fitting length of the rotating drag chain with the first rotating part and / or the second rotating part, and obtain a feedback signal of the drag chain position state; the second detection component is used to detect the relative rotation angle between the first rotating part and the second rotating part, and obtain a frame rotation signal; the controller is used to receive the feedback signal of the drag chain position state and the frame rotation signal, and judge whether the position coordinates of the rotating drag chain match the relative rotation angle between the first rotating part and the second rotating part through the feedback signal of the drag chain position state and the frame rotation signal. If they do not match, the controller is used to control the first rotating part and the second rotating part to stop rotating.

[0032] Compared with the prior art, the rotating drag chain operation monitoring device provided by the present invention can judge whether the position coordinates of the rotating drag chain are abnormal through the suction length between the rotating drag chain and the first rotating part and / or the second rotating part and the relative rotation angle between the first rotating part and the second rotating part. When an abnormality occurs, the controller can timely control the frame to stop, greatly reducing the potential safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a flowchart of the rotating drag chain operation monitoring method disclosed in the embodiment of the present invention;

[0035] Figure 2 It is a structural schematic block diagram of the rotating drag chain operation monitoring device disclosed in the embodiment of the present invention;

[0036] Figure 3 It is a physical object of the rotating drag chain operation monitoring device disclosed in the embodiment of the present invention Figure 1 ;

[0037] Figure 4 It is a physical object of the rotating drag chain operation monitoring device disclosed in the embodiment of the present invention Figure 2 ;

[0038] Figure 5 It is a suction schematic diagram of the rotating drag chain and the first rotating part disclosed in the embodiment of the present invention Figure 1 ;

[0039] Figure 6Schematic diagram of the suction engagement between the rotary drag chain and the first rotating part disclosed in the embodiment of the present invention Figure 2 ;

[0040] Figure 7 Physical object of the rotary drag chain operation monitoring device disclosed in the embodiment of the present invention Figure 3 。

[0041] Among them, 100 is the fixed part, 110 is the first rotating part, 111 is the gear to be measured, and 120 is the second rotating part;

[0042] 200 is the rotary drag chain;

[0043] 300 is the first detection component;

[0044] 400 is the first suction engagement component. Specific implementation mode

[0045] The core of the present invention lies in disclosing a method for monitoring the operation of a rotary drag chain to avoid potential safety hazards caused by abnormal suction engagement between the rotary drag chain and the rotating part of the frame.

[0046] Another core of the present invention lies in disclosing a rotary drag chain operation monitoring device for detecting the movement trajectory of the rotary drag chain on the frame by the above-mentioned rotary drag chain operation monitoring method.

[0047] Hereinafter, the embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention described in the claims. It should be noted that for the convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0048] Combined with Figures 1-7 , the rotary drag chain operation monitoring method disclosed in the present invention is used to detect the movement trajectory of the rotary drag chain 200 on the frame. The frame includes a fixed part 100, a first rotating part 110 and a second rotating part 120. The first rotating part 110 and the second rotating part 120 are coaxially arranged, and the first rotating part 110 is arranged on the outer ring of the second rotating part 120. At least one of the first rotating part 110 and the second rotating part 120 is rotatable relative to the fixed part 100. The rotary drag chain 200 is arranged between the first rotating part 110 and the second rotating part 120, and one end of the rotary drag chain 200 is connected to the inner wall of the first rotating part 110, and the other end is connected to the outer wall of the second rotating part 120. The rotary drag chain operation monitoring method includes a detection step, a judgment step and a shutdown step.

[0049] S10. Detection;

[0050] Detect the position coordinates of the rotating drag chain 200 and obtain the feedback signal of the drag chain position state. Detect the relative rotation angle between the first rotating part 110 and the second rotating part 120 and obtain the frame rotation signal. Among them, the position coordinates of the rotating drag chain 200 include the coordinates of multiple positions on the extension length of the rotating drag chain 200 itself, which can reflect the position and bending state of the rotating drag chain 200 (the length of the overlapping part of the rotating drag chain 200).

[0051] S20. Judge:

[0052] Process the drag chain position state feedback signal and the frame rotation signal to judge whether the position coordinates of the rotating drag chain 200 match the relative rotation angle between the first rotating part 110 and the second rotating part 120. Specifically, the actual movement position and bending state of the rotating drag chain 200 can be obtained from the drag chain position state feedback signal, and the theoretical movement position and bending state of the rotating drag chain 200 can be obtained from the frame rotation signal. When the two do not match, it indicates that there is an abnormal situation in the actual position coordinates of the rotating drag chain 200.

[0053] S30. Stop the machine;

[0054] When the position coordinates of the rotating drag chain 200 match the relative rotation angle between the first rotating part 110 and the second rotating part 120, the first rotating part 110 and the second rotating part 120 continue to operate normally; when the position coordinates of the rotating drag chain 200 do not match the relative rotation angle between the first rotating part 110 and the second rotating part 120, both the first rotating part 110 and the second rotating part 120 stop rotating.

[0055] Compared with the prior art, the present invention detects the running track of the rotating drag chain 200 in real time, compares and adapts it with the relative rotation angle between the first rotating part 110 and the second rotating part 120 detected in real time. Once there is a deviation or mismatch between the two, it can be determined that there is an abnormal situation in the position coordinates of the rotating drag chain 200. At this time, the machine frame can be controlled to stop, and the operator can be reminded to perform maintenance and inspection to avoid potential safety hazards caused by abnormal suction between the rotating drag chain 200 and the rotating part of the machine frame.

[0056] In an embodiment, the detection step includes a first step and a second step. The first step is specifically to detect the position coordinates of the rotating drag chain 200 and obtain the feedback signal of the drag chain position state; the first rotating part 110 is rotatable relative to the fixed part 100, and the second rotating part 120 is fixed in position relative to the fixed part 100. The second step is specifically to detect the rotation angle of the first rotating part 110 and obtain the frame rotation signal.

[0057] The rotation of the first rotating part 110 drives the rotating drag chain 200 to move in position, and there is a fixed corresponding relationship between the position coordinates or rotation angle of the first rotating part 110 and the contact area, suction length, and relative position between the rotating drag chain 200 and the inner wall of the first rotating part 110. Taking the rotation angle of the first rotating part 110 and the suction length between the rotating drag chain 200 and the inner wall of the first rotating part 110 as an example, combined with Figure 3 and Figure 4 , during the relative rotation of the first rotating part 110 and the second rotating part 120, the rotating drag chain 200 always keeps a part in contact with the inner wall of the first rotating part 110, a part in contact with the outer wall of the second rotating part 120, and the rest in a bent state. Since the total length of the rotating drag chain 200 is determined and the length of the part in the bent state is determined, therefore, the actual position coordinates of the rotating drag chain 200 can be obtained by detecting the contact length between the rotating drag chain 200 and the first rotating part 110 and / or the second rotating part 120, and the theoretical position coordinates of the rotating drag chain 200 at this time can be determined by the relative position between the first rotating part 110 and the second rotating part 120. Furthermore, it can be judged whether the position coordinates of the rotating drag chain 200 are abnormal by whether the actual position coordinates and the theoretical position coordinates are consistent. Correspondingly, the first step is specifically to detect the contact length between the rotating drag chain 200 and the inner wall of the first rotating part 110 to obtain the position coordinates of the rotating drag chain 200, and / or to detect the contact length between the rotating drag chain 200 and the outer wall of the second rotating part 120 to obtain the position coordinates of the rotating drag chain 200.

[0058] Furthermore, the first step is specifically to detect the position coordinates of the rotating drag chain 200 by the first detection component 300 and obtain a feedback signal of the drag chain position state; the first detection component 300 includes at least one of a pressure sensor, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

[0059] According to the different types of the first detection component 300 selected, the arrangement positions of the first detection component 300 are also different. Taking the first detection component 300 as a pressure sensor as an example, combined with Figure 2 and Figure 5, when the pressure sensor is used to detect the fitting length between the rotating drag chain 200 and the inner wall of the first rotating part 110, a plurality of pressure sensors are arranged at intervals around the circumferential direction of the first rotating part 110 on the inner wall of the first rotating part 110. The pressure sensor can judge whether the current position is attracted to the rotating drag chain 200 by whether a pressure signal is detected or the change of the detected pressure signal. The fitting length between the rotating drag chain 200 and the first rotating part 110 can be obtained through the number and / or position of the first detection components 300 triggered by the rotating drag chain 200; when the pressure sensor is used to detect the fitting length between the rotating drag chain 200 and the outer wall of the second rotating part 120, a plurality of pressure sensors can be arranged at intervals around the circumferential direction of the second rotating part 120 on the outer wall of the second rotating part 120, so as to obtain the fitting length between the rotating drag chain 200 and the second rotating part 120 through the number and / or position of the first detection components 300 triggered by the rotating drag chain 200.

[0060] When the first detection component 300 is a photoelectric sensor, combined with Figure 6 , the first detection component 300 can be arranged on the side wall of the first rotating part 110, and the photoelectric sensor can judge whether the current position is attracted to the rotating drag chain 200 by the change of light. The working mechanisms of other sensors are similar to those of the pressure sensor and the photoelectric sensor, and will not be elaborated here.

[0061] It should be noted that since the relative rotation angle range of the first rotating part 110 and the second rotating part 120 is fixed, therefore, the first detection component 300 only needs to be arranged within the possible attraction range of the rotating drag chain 200 on the first rotating part 110 and / or the second rotating part 120.

[0062] The second step is specifically to detect the rotation angle of the first rotating part 110 through the second detection component to obtain the frame rotation signal. The second detection component includes at least one of an encoder, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

[0063] According to the different types of the selected second detection component, the arrangement position of the second detection component is also different. Taking the second detection component as an encoder as an example, combined with Figure 2 and Figure 3, a gear under test 111 is rotatably arranged on a fixed part 100. The gear under test 111 meshes and drives with meshing teeth arranged on the outer wall of a first rotating part 110. By detecting the rotation angle of the gear under test 111, the rotation angle of the first rotating part 110 can be obtained. Obtaining the rotation angle of the first rotating part 110 through the gear under test 111 which is much smaller in size than the first rotating part 110 makes the detection more convenient. When the second detection component is a photoelectric sensor, at least one detection hole position can be eccentrically arranged on the gear under test 111, and the rotation angle of the first rotating part 110 is obtained by converting the number of times the photoelectric sensor detects this detection hole position. The operating mechanisms of other sensors are similar to those of the encoder and the photoelectric sensor, and will not be elaborated here.

[0064] In order to facilitate the operator to handle in time after an abnormal condition occurs in the rotary drag chain 200, in combination with Figure 1 and Figure 2 , an alarm step is further included after the shutdown step.

[0065] S40. Alarm;

[0066] An alarm signal is sent through an alarm device to remind the operator to handle it.

[0067] The rotary drag chain operation monitoring device disclosed by the present invention is used to detect the movement track of the rotary drag chain 200 on a frame through the above-mentioned rotary drag chain operation monitoring method, and includes a first detection component 300, a second detection component and a controller. The first detection component 300 is at least arranged on one of the first rotating part 110 and the second rotating part 120, and is used to detect the fitting length of the rotary drag chain 200 with the first rotating part 110 and / or the second rotating part 120, and obtain a drag chain position state feedback signal; in combination with Figure 3 and Figure 4 , during the relative rotation of the first rotating part 110 and the second rotating part 120, the rotary drag chain 200 always keeps a part in contact with the inner wall of the first rotating part 110, a part in contact with the outer wall of the second rotating part 120, and the rest in a bent state. Since the total length of the rotary drag chain 200 is determined and the length of the part in the bent state is determined, the position coordinates of the rotary drag chain 200 can be obtained by detecting the fitting length of the rotary drag chain 200 with the first rotating part 110 and / or the second rotating part 120.

[0068] The second detection component is used to detect the relative rotation angle between the first rotating part 110 and the second rotating part 120 and obtain a frame rotation signal; when only one of the first rotating part 110 and the second rotating part 120 rotates, only the rotating one needs to be detected; when the first rotating part 110 and the second rotating part 120 rotate together, it is necessary to detect the respective rotation directions and rotation angles of the first rotating part 110 and the second rotating part 120, calculate the relative rotation angle between the two, or the second detection component is directly arranged on one of the first rotating part 110 and the second rotating part 120, and obtain the relative rotation angle between the two by detecting the other of the first rotating part 110 and the second rotating part 120.

[0069] The controller is used to receive the drag chain position status feedback signal and the frame rotation signal, and judge whether the position coordinates of the rotating drag chain 200 match the relative rotation angle between the first rotating part 110 and the second rotating part 120 through the drag chain position status feedback signal and the frame rotation signal. If not, the controller is used to control the first rotating part 110 and the second rotating part 120 to stop rotating.

[0070] Compared with the prior art, the rotating drag chain operation monitoring device disclosed by the present invention can judge whether the position coordinates of the rotating drag chain 200 are abnormal through the suction length between the rotating drag chain 200 and the first rotating part 110 and / or the second rotating part 120 and the relative rotation angle between the first rotating part 110 and the second rotating part 120, and when an abnormality occurs, timely control the frame to stop, greatly reducing the safety hazard.

[0071] In some embodiments, the rotating drag chain 200 is attracted to the first rotating part 110 through a magnetic attraction assembly. The magnetic attraction assembly includes a first attraction component 400 and a second attraction component. The first attraction component 400 is used to be arranged on the rotating drag chain 200, the second attraction component is used to be arranged on the inner wall of the first rotating part 110, and the first attraction component 400 and the second attraction component can attract each other and separate from each other under the action of a pulling force.

[0072] One of the first attraction component 400 and the second attraction component is a magnetic attraction component such as a soft magnet, and the other can be a metal component or a magnetic attraction component to achieve the mutual attraction effect. Specifically, the first attraction component 400 is arranged at intervals along the extension length of the rotating drag chain 200 on one side of the rotating drag chain 200, and the second attraction component can be multiple ones arranged at intervals on the inner wall of the first rotating part 110.

[0073] Combined Figure 3 , the rotating drag chain 200 is usually arranged on the frame in this way, and the rotating drag chain 200 can usually be reliably attached to the outer wall of the second rotating part 120 by its own weight. To further ensure the reliable attachment effect, and when the rotating drag chain 200 is used on the frameFigure 7 When arranged in the manner shown, to ensure the reliability of detecting the position coordinates of the rotary drag chain 200, the magnetic attraction assembly further includes a third attracting member disposed on the outer wall of the second rotating portion 120 for attracting the first attracting member 400. Specifically, the third attracting members can be multiple and spaced on the outer wall of the second rotating portion 120.

[0074] It should be noted that generally, both the first rotating portion 110 and the second rotating portion 120 are made of metal. Therefore, by setting the first attracting member 400 as a member with magnetic attraction performance, the rotary drag chain 200 can be directly adsorbed on the first rotating portion 110 and the second rotating portion 120, and thus the second attracting member and the third attracting member can be cancelled.

[0075] In a further optimized solution, the rotary drag chain operation monitoring device further includes an alarm device. The controller is electrically connected to the alarm device to control the alarm device to emit an alarm signal when the position coordinates of the rotary drag chain 200 do not match the relative rotation angle of the first rotating portion 110 and the second rotating portion 120, and after the operator eliminates the fault, it is used for the staff to cancel the alarm.

[0076] Combined Figure 2 with this, the rotary drag chain operation monitoring device further includes a display device. The controller is electrically connected to the display device and can display alarm information when the position coordinates of the rotary drag chain 200 do not match the relative rotation angle of the first rotating portion 110 and the second rotating portion 120.

[0077] In a specific embodiment disclosed in the present invention, during the assembly process, the pressure sensor and the second attracting member are fixed on the inner wall of the first rotating portion 110; the first attracting member 400 is installed on the rotary drag chain 200, and then the rotary drag chain 200 is installed between the first rotating portion 110 and the second rotating portion 120 according to the motion track; the encoder and the gear to be measured 111 are installed on the fixing portion 100, and the gear to be measured 111 is meshed with the outer ring engaging teeth of the first rotating portion 110; the communication cables of the pressure sensor and the encoder are respectively connected to the controller to complete the assembly.

[0078] During the operation of the frame, the first rotating portion 110 rotates and drives the rotary drag chain 200 to move synchronously. The suction length between the rotary drag chain 200 and the first rotating portion 110 and the second rotating portion 120 will change with the rotation angle of the first rotating portion 110. At this time, the pressure sensor can output the measured suction length to the controller, and then obtain the position coordinates of the rotary drag chain 200; when the first rotating portion 110 rotates, it will synchronously drive the gear to be measured 111 and the encoder to rotate. The encoder outputs the position code value to the controller, and the controller converts the code value of the encoder into the current position coordinates of the first rotating portion 110.

[0079] The controller compares the sensor signals of the suction lengths or pressure magnitudes of the rotary drag chain 200 and the first rotating part 110 obtained respectively, and the position coordinates of the first rotating part 110 fed back by the encoder by means of look-up tables or calculation formulas to determine whether they match. When the controller obtains that the comparison results do not match and the suction length of the rotary drag chain 200 and the first rotating part 110 is small, it indicates that the rotary drag chain 200 has fallen off. At this time, the controller controls the first rotating part 110 to stop the current movement and transmits the alarm information of the abnormality of the rotary drag chain 200 to the main console computer used by the operator. When the operator sees the alarm information on the display device of the main console, the current fault needs to be eliminated and then the current fault information is manually clicked to be cancelled on the computer before the device can resume normal use.

[0080] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. The specific technical means in some embodiments can be partially or wholly incorporated into another embodiment on the premise that they are not explicitly excluded by another embodiment. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for monitoring the operation of a rotating drag chain, which is used to detect the movement track of the rotating drag chain (200) on a frame. The frame includes a fixed part (100), a first rotating part (110) and a second rotating part (120). The first rotating part (110) and the second rotating part (120) are coaxially arranged, and the first rotating part (110) is arranged on the outer ring of the second rotating part (120). At least one of the first rotating part (110) and the second rotating part (120) is rotatable relative to the fixed part (100). The rotating drag chain (200) is arranged between the first rotating part (110) and the second rotating part (120), and one end of the rotating drag chain (200) is connected to the inner wall of the first rotating part (110), and the other end is connected to the outer wall of the second rotating part (120). It is characterized in that, Including the steps of: Detection: Detect the position coordinates of the rotary drag chain (200) and obtain a feedback signal of the drag chain position state; detect the relative rotation angle between the first rotating part (110) and the second rotating part (120), and obtain a frame rotation signal. Judgment: Process the drag chain position state feedback signal and the frame rotation signal to determine whether the position coordinates of the rotary drag chain (200) match the relative rotation angle between the first rotating part (110) and the second rotating part (120). Shutdown: When the position coordinates of the rotary drag chain (200) do not match the relative rotation angle between the first rotating part (110) and the second rotating part (120), the first rotating part (110) and the second rotating part (120) stop rotating.

2. The rotational drag chain operation monitoring method according to claim 1, wherein The detection step includes a first step and a second step. The first step specifically is to detect the position coordinates of the rotary drag chain (200) and obtain the drag chain position state feedback signal. The first rotating part (110) is rotatable relative to the fixed part (100), and the second rotating part (120) is fixed in position relative to the fixed part (100). The second step specifically is to detect the rotation angle of the first rotating part (110) and obtain the frame rotation signal.

3. The rotational drag chain operation monitoring method according to claim 2, wherein, The first step specifically is: Detect the fitting length between the rotary drag chain (200) and the inner wall of the first rotating part (110) to obtain the position coordinates of the rotary drag chain (200), and / or detect the fitting length between the rotary drag chain (200) and the outer wall of the second rotating part (120) to obtain the position coordinates of the rotary drag chain (200).

4. The rotational drag chain operation monitoring method according to claim 3, characterized in that, The first step specifically is to detect the position coordinates of the rotary drag chain (200) by a first detection component (300) and obtain the drag chain position state feedback signal. The first detection component (300) includes at least one of a pressure sensor, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

5. The rotational drag chain operation monitoring method according to claim 4, characterized in that, A plurality of the first detection components (300) are arranged at intervals on the first rotating part (110) to obtain the fitting length between the rotary drag chain (200) and the inner wall of the first rotating part (110) from the number or position of the first detection components (300) triggered by the rotary drag chain (200); and / or A plurality of the first detection components (300) are arranged at intervals on the second rotating part (120) to obtain the fitting length between the rotary drag chain (200) and the outer wall of the second rotating part (120) from the number or position of the first detection components (300) triggered by the rotary drag chain (200).

6. The rotational drag chain operation monitoring method according to claim 2, wherein The second step specifically is to detect the rotation angle of the first rotating part (110) by a second detection component to obtain the frame rotation signal. The second detection component includes at least one of an encoder, a photoelectric sensor, an optical fiber sensor, and a Hall effect sensor.

7. The method for monitoring the operation of a rotating drag chain according to claim 6, characterized in that, A gear under test (111) is rotatably arranged on the fixed part (100), and the gear under test (111) meshes with the meshing teeth arranged on the outer wall of the first rotating part (110). The second detection component is used to detect the rotation angle of the gear under test (111) to obtain the rotation angle of the first rotating part (110).

8. The rotational drag chain operation monitoring method according to claim 1, wherein After the shutdown step, an alarm step is further included, and the alarm step is to send an alarm signal through an alarm device.

9. A running monitoring device for a rotary drag chain, characterized in that, For detecting the movement trajectory of the rotating drag chain (200) on the rack by using the rotating drag chain operation monitoring method according to any one of claims 1-8, including: A first detection component (300) is at least arranged on one of the first rotating part (110) and the second rotating part (120), and is used to detect the fitting length of the rotating drag chain (200) with the first rotating part (110) and / or the second rotating part (120), and obtain the drag chain position state feedback signal; A second detection component is used to detect the relative rotation angle between the first rotating part (110) and the second rotating part (120), and obtain the rack rotation signal; A controller is used to receive the drag chain position state feedback signal and the rack rotation signal, and judge whether the position coordinates of the rotating drag chain (200) match the relative rotation angle between the first rotating part (110) and the second rotating part (120) through the drag chain position state feedback signal and the rack rotation signal. If not, the controller is used to control the first rotating part (110) and the second rotating part (120) to stop rotating.

10. The rotating drag chain operation monitoring device according to claim 9, characterized in that, The rotating drag chain (200) is attracted to the first rotating part (110) through a magnetic attraction component. The magnetic attraction component includes a first attraction component (400) and a second attraction component. The first attraction component (400) is used to be arranged on the rotating drag chain (200), the second attraction component is used to be arranged on the inner wall of the first rotating part (110), and the first attraction component (400) and the second attraction component are used to attract each other.

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