Winding state determination system and construction machinery

Abstract

To provide a winding state determination system capable of easily and reliably determining the winding state of a rope on a winch drum.SOLUTION: A winding state determination system according to an embodiment of the present disclosure is a winding state determination system that determines the winding state of a rope on a winch drum, and comprises a sound collection device that collects sounds when the rope is wound, and a determination unit that determines the winding state of the rope based on information about the sounds collected by the sound collection device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a winding condition determination system and a construction machine. [Background technology]

[0002] BACKGROUND ART Conventionally, in construction machinery such as cranes, an operator or the like inspects the rope wound around the winch drum.

[0003] One method for inspecting ropes involves an operator directly hitting the rope with a hammer and judging the rope's condition based on the response. However, this method is manual and requires the machine to be stopped during inspection, which reduces the machine's availability. Furthermore, this method can sometimes lead to operator oversights and other problems.

[0004] Therefore, a method of inspecting using images captured by a camera has been proposed (see Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2020-23391 Summary of the Invention [Problem to be solved by the invention]

[0006] Patent Document 1 describes a method of calculating the diameter of a wire rope by photographing the wire rope with a camera between a sliding sheave and a drum. Patent Document 1 also describes that abnormalities such as kinks and broken wires can be detected based on the information photographed by the camera.

[0007] However, images taken by a camera can only detect abnormalities on the surface that appear in the image, so it is not possible to detect abnormalities on the back or inside of the wire rope that do not appear in the image.

[0008] In view of the above-mentioned inconveniences, the present disclosure aims to provide a winding state determination system that can easily and reliably determine the winding state of a rope on a winch drum. [Means for solving the problem]

[0009] A winding state determination system according to one aspect of the present disclosure, which has been made to solve the above problem, is a winding state determination system that determines the winding state of a rope on a winch drum, and includes a sound collection device that collects sounds when the rope is wound, and a determination unit that determines the winding state of the rope based on information about the sounds collected by the sound collection device. [Effects of the Invention]

[0010] A winding state determination system according to one aspect of the present disclosure can easily and reliably determine the winding state of a rope on a winch drum. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram showing a winding state determination system according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic diagram showing a winding state determination system according to an embodiment different from the winding state determination system of FIG. [Figure 3] FIG. 3 is a schematic diagram showing a winding state determination system according to an embodiment different from the winding state determination systems of FIGS. 1 and 2. In FIG. [Figure 4] FIG. 4 is a block diagram showing the configuration of a winding state determination system control unit according to an embodiment of the present disclosure. [Figure 5] FIG. 5 is a schematic perspective view showing a construction machine according to one embodiment of the present disclosure. [Figure 6]FIG. 6 is a partially enlarged side view of the construction machine of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0013] (1) A winding state determination system according to one embodiment of the present disclosure is a winding state determination system that determines the winding state of a rope on a winch drum, and includes a sound collection device that collects sounds when the rope is wound, and a determination unit that determines the winding state of the rope based on information about the sounds collected by the sound collection device.

[0014] The winding state determination system includes a sound collection device that collects sounds made when the rope is being wound, and the determination unit determines the winding state of the rope based on the sound information collected by the sound collection device, making it possible to determine states that do not appear in specific images. Therefore, the winding state determination system can easily and reliably determine the winding state of the rope on the winch drum.

[0015] (2) In the above (1), an imaging device may be further provided for capturing an image of the winding position of the rope on the winch drum, and the determination unit may determine the winding state of the rope based on the sound information and the information of the winding position captured by the imaging device. With this configuration, the winding state of the rope can be easily and reliably determined in relation to the winding position on the winch drum.

[0016] (3) In the above (1) or (2), a sensor may be further provided that can acquire position information on the circumferential surface of the winch drum of the rope wound around the winch drum, and the determination unit may determine the wound state of the rope based on the sound information and the position information. With this configuration, the wound state of the rope can be easily and reliably determined in relation to the winding position on the winch drum.

[0017] (4) In any of (1) to (3) above, it is preferable to further include a prediction unit that predicts the degree of deterioration of the rope based on information including the sound. This configuration makes it easy to know in advance when the rope needs to be replaced or repaired. As a result, it is possible to suppress a decrease in the operating rate of the machine due to a malfunction of the rope.

[0018] (5) In any one of (1) to (4) above, the sound collector may be a directional microphone. With this configuration, the sound collector can easily collect sound with reduced noise contamination.

[0019] (6) In any of the above (1) to (5), it is preferable to further include a display unit that displays the determination result of the determination unit. With this configuration, the operator can easily understand the winding state of the rope.

[0020] (7) In any one of (1) to (6) above, the determination unit may determine the type of winding state of the rope. With this configuration, the winding state of the rope can be easily evaluated.

[0021] (8) In any one of (1) to (7) above, the winding state determination system may be for use in a construction machine. The winding state determination system is suitable for determining the winding state of a rope in a construction machine.

[0022] (9) In the above (8), the winding state determination system may further include a mounting fixture for mounting the sound collection device on a construction machine, the mounting fixture having a holding part for holding the sound collection device, a cover for covering at least a part of the sound collection device, and a fixing part for fixing the holding part to the construction machine. With this configuration, the winding state of the rope on the construction machine can be determined more easily and reliably.

[0023] (10) A construction machine according to one embodiment of the present disclosure is equipped with the winding state determination system described in (8) or (9) above.

[0024] The construction machine can easily and reliably determine the state of the rope wound around the winch drum.

[0025] [Details of the embodiment of the present invention] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Note that the drawings are schematic and may not correspond to actual dimensions, ratios, etc.

[0026] [First embodiment] <Winding status detection system> The winding state determination system 10 in Fig. 1 determines the winding state of the rope R on the winch drum 100. The winding state determination system 10 includes a sound collection device 11 that collects sounds made when the rope R is wound, and a determination unit 12 that determines the winding state of the rope R based on information about the sounds collected by the sound collection device 11 (hereinafter also referred to as "sound information"). The winding state determination system 10 also includes a display unit 13 that displays the determination result of the determination unit 12. In this disclosure, the "winding state of the rope" includes both the state of the rope itself and how the rope is wound around the winch drum.

[0027] The winding state determination system 10 includes a sound collection device 11 that collects sounds made when the rope R is wound, and the determination unit 12 determines the winding state of the rope R based on the sound information collected by the sound collection device 11, so that it is possible to determine states that do not appear in a particular image. Specifically, the winding state determination system 10 can determine the internal state of the rope R that is in the camera's blind spot and the contact state between ropes R. Therefore, the winding state determination system 10 can easily and reliably determine the winding state of the rope R on the winch drum 100.

[0028] The winding condition determination system 10 can be configured for use in, for example, construction machinery. In construction machinery, when the rope R becomes disorderly, it may be necessary to perform actions such as rewinding, stopping sudden operations, or changing the number of hooks. The winding condition determination system 10 can easily determine the winding condition, making it easy to take appropriate action depending on the winding condition.

[0029] (winch drum) There are no particular limitations on the specific configuration of the winch drum 100. As the winch drum 100, for example, one having a cylindrical shaft portion and a pair of flange portions disposed at both ends of the shaft portion can be used.

[0030] (sound collection device) The sound collector 11 collects the sound generated when the winch drum 100 winds up the rope R and outputs an audio signal. The audio signal output from the sound collector 11 is converted into a digital signal and then transmitted to the discrimination unit 12.

[0031] The sound collector 11 may be disposed on the winch drum 100 or in a position close to the winch drum 100, but from the viewpoint of preventing the sound collection range from becoming too narrow, it may be preferable to dispose it in a position close to the winch drum 100. By including the sound collector 11, the winding state determination system 10 can determine the winding state of the rope R based on the type of sound.

[0032] It is sufficient for the sound collection device 11 to collect the sound produced when the rope R is wound. On the other hand, it may be preferable for the sound collection device 11 to collect the sound produced when the layers of the rope R change on the winch drum 100. The winding state determination system 10 can easily determine abnormalities such as irregular winding of the rope R by having the sound collection device 11 collect the sound produced when the layers of the rope R change.

[0033] A microphone can be used as the sound collection device 11. This microphone may be an omnidirectional microphone or a directional microphone. Among these, a directional microphone is preferable. When the microphone is a directional microphone, it is possible to easily collect sound with reduced noise contamination.

[0034] The number of sound collectors 11 in the winding state determination system 10 is not particularly limited, and may be one or two or more. For example, if the sound collector 11 is a directional microphone, one directional microphone may be placed in a position close to the winch drum 100. Also, if the sound collector 11 is a directional microphone, two directional microphones may be placed so that both end portions of the shaft of the winch drum 100 are included in the directivity range. With this configuration, it is possible to more easily collect the sound when the layers of the rope R change. Furthermore, the sound collector 11 may be installed so that it moves in accordance with the winding position of the rope R.

[0035] (Discrimination part) The determination unit 12 can be configured to include a processor such as a CPU (Central Processing Unit) and a program memory that stores a program executed by the processor.

[0036] The discrimination unit 12 discriminates the winding state of the rope R based on the information of the sound collected by the sound collection device 11. The discrimination unit 12 may discriminate the winding state of the rope R by, for example, referring to a table that associates the above sound information with the winding state of the rope R.

[0037] On the other hand, the discrimination unit 12 may be configured to output discrimination information from input data including the sound information using a machine learning model that has been machine-learned using known input data and parameters that indicate the winding state of the rope R for that input data as learning data. A neural network may be used for the machine learning of the machine learning model.

[0038] The discrimination unit 12 only needs to be able to discriminate the winding state of the rope R, and may be configured to discriminate, for example, whether or not the rope R is disorderly wound. The discrimination unit 12 may also be configured to be able to discriminate the type of winding state of the rope R. For example, the discrimination unit 12 may be configured to be able to discriminate between a decrease in ground winding, an operation problem, no-load tension, and the like. The discrimination unit 12 can easily discriminate the type of winding state of the rope R by using information on the sound collected by the sound collection device 11. The winding state discrimination system 10 can easily evaluate the winding state of the rope R by having the discrimination unit 12 discriminate the type of winding state of the rope R. Furthermore, this configuration makes it easy to take action before the rope becomes disorderly wound, etc., and reduces the risk of disrupting the operation of the construction machinery.

[0039] (Display) The display unit 13 displays the discrimination information discriminated by the discrimination unit 12. The display unit 13 may be configured as a display such as a liquid crystal display. The display unit 13 may also be configured to display the discrimination status by the type of sound such as an alarm sound.

[0040] The display unit 13 may be configured to display the determination information, for example, in the cab (driver's seat) of the construction machine. The winding condition determination system 10 allows the operator to easily understand the determination result of the winding condition of the rope R based on sounds that cannot be heard from inside the cab. As a result, the operator can take real-time action to improve the winding condition based on the determination result, such as rewinding the rope, stopping sudden operations, or changing the number of hooks.

[0041] [Second embodiment] <Winding status detection system> 2 determines the wound state of the rope R on the winch drum 100. The winding state determination system 20 includes a sound collection device 11 that collects sounds made when the rope R is wound, an imaging device 24 that captures an image of the winding position of the rope R on the winch drum 100, and a determination unit 22 that determines the wound state of the rope R based on information about the sound collected by the sound collection device 11 and information about the winding position captured by the imaging device 24 (hereinafter also referred to as "winding position information"). The winding state determination system 20 also includes a display unit 13 that displays the determination result made by the determination unit 22.

[0042] In the winding state determination system 20, the configurations of the sound collection device 11 and the display unit 13 can be the same as those of the winding state determination system 10 in Fig. 1. Also, the configuration of the winch drum 100 used in the winding state determination system 20 can be the same as that of the winding state determination system 10 in Fig. 1.

[0043] In the winding state determination system 20, the determination unit 22 determines the winding state of the rope R based on the sound information and the winding position information, so that the winding state of the rope R can be easily and reliably determined in relation to the winding position on the winch drum 100.

[0044] (imaging device) The imaging device 24 can be configured with a camera. The imaging device 24 may be configured to acquire, for example, information about a change in layer of the rope R on the winch drum 100 as the winding position information. The imaging device 24 may be configured to constantly capture an image of the winding position of the rope R on the winch drum 100, so that the discrimination unit 22 can determine the timing of a change in layer of the rope R. In other words, in the winding state discrimination system 20, the imaging device 24 does not need to be configured to directly determine the state of the rope R itself, but only needs to be configured to determine the progress of the rope R being wound onto the winch drum 100.

[0045] The location of the imaging device 24 is not particularly limited, and it may be located on the winch drum 100 or in the vicinity of the winch drum 100. The imaging device 24 may also be fixed to a certain location, or may be provided so as to move in accordance with the winding position of the rope R.

[0046] (Discrimination part) The determination unit 22 can be configured to include a processor such as a CPU and a program memory that stores a program executed by the processor. The determination unit 22 may further include a GPU (Graphics Processing Unit).

[0047] The discrimination unit 22 discriminates the winding state of the rope R based on the sound information collected by the sound collection device 11 and the information of the winding position imaged by the imaging device 24. The discrimination unit 22 may discriminate the winding state of the rope R by, for example, referring to a table that associates the sound information with the winding state of the rope R. In this case, the discrimination unit 22 may discriminate the timing of the change of layers of the rope R based on the winding position information, and discriminate the winding state of the rope R based on the sound information at this timing.

[0048] Furthermore, the discrimination unit 22 may be configured to output discrimination information from input data including the above-mentioned sound information using a machine learning model that has been machine-learned using known input data and parameters that indicate the winding state of the rope R for that input data as learning data. For example, the discrimination unit 22 may be configured to output discrimination information from input data that includes sound information when the layers of the rope R change, or may be configured to output discrimination information from input data that includes the sound information and the winding position information. A neural network may be used for the machine learning of the above-mentioned machine learning model.

[0049] The determination unit 22 only needs to be able to determine the winding state of the rope R, and may be configured to determine, for example, whether or not the rope R is disorderly wound, or to determine the type of winding state of the rope R. Examples of the types of winding state of the rope R include the same types as those of the winding state determination system 10 of FIG. 1.

[0050] [Third embodiment] <Winding status detection system> 3 determines the wound state of the rope R on the winch drum 100. The winding state determination system 30 includes a sound collection device 11 that collects sound when the rope R is wound, a sensor 35 that can acquire position information of the rope R wound onto the winch drum 100 on the circumferential surface of the winch drum 100 (the circumferential surface of the shaft), and a determination unit 32 that determines the wound state of the rope R based on the sound information collected by the sound collection device 11 and the position information acquired by the sensor 35. The winding state determination system 30 also includes a display unit 13 that displays the determination result of the determination unit 32.

[0051] In the winding state determination system 30, the configurations of the sound collection device 11 and the display unit 13 can be the same as those of the winding state determination system 10 in Fig. 1. Also, the configuration of the winch drum 100 used in the winding state determination system 30 can be the same as that of the winding state determination system 10 in Fig. 1.

[0052] In the winding state determination system 30, the determination unit 32 determines the winding state of the rope R based on the sound information and the arrangement information, so that the winding state of the rope R can be easily and reliably determined in relation to the winding position on the winch drum 100. Furthermore, the winding state determination system 30 can reduce the cost of the system compared to when, for example, the above-mentioned imaging device 24 is used.

[0053] (sensor) The sensor 35 may be any sensor capable of detecting arrangement information of the rope R on the circumferential surface of the winch drum 100, and examples thereof include a proximity sensor and a touch sensor. The sensor 35 may detect, for example, layer change information of the rope R on the winch drum 100 as the arrangement information. The sensor 35 may also detect information on the number of layers of the rope R wound around the winch drum 100, in addition to or instead of the layer change information. When detecting the layer change information, the sensor 35 may be disposed on, for example, the flange of the winch drum 100. The sensor 35 may be configured to include a sensor main body disposed on the flange of the winch drum 100 and a controller that acquires layer change information of the rope R based on the detection value of the sensor main body. When the sensor 35 includes the controller, the arrangement and configuration of the controller are not particularly limited.

[0054] The number of sensors 35 is not particularly limited, and may be one or two or more. In addition, the winding state determination system 30 may have a plurality of sensors 35 arranged along the radial direction of the flange so as to detect the arrangement information of each layer of the rope R wound around the winch drum 100.

[0055] (Discrimination part) The determination unit 32 can be configured to include a processor such as a CPU and a program memory that stores a program executed by the processor.

[0056] The discrimination unit 32 discriminates the winding state of the rope R based on the sound information collected by the sound collection device 11 and the arrangement information acquired by the sensor 35. The discrimination unit 32 may discriminate the winding state of the rope R, for example, by referring to a table that associates the sound information with the winding state of the rope R. In this case, the discrimination unit 32 may discriminate the timing of a change in layer of the rope R based on the arrangement information, and discriminate the winding state of the rope R based on the sound information at this timing.

[0057] Furthermore, the discrimination unit 32 may be configured to output discrimination information from input data including the above-mentioned sound information using a machine learning model that has been machine-learned using known input data and parameters that indicate the winding state of the rope R for that input data as learning data. For example, the discrimination unit 32 may be configured to output discrimination information from input data that includes sound information when the layers of the rope R change, or may be configured to output discrimination information from input data that includes the above-mentioned sound information and the above-mentioned arrangement information. A neural network may be used for the machine learning of the above-mentioned machine learning model.

[0058] The determination unit 32 only needs to be able to determine the winding state of the rope R, and may be configured to determine, for example, whether or not the rope R is disorderly wound, or to determine the type of winding state of the rope R. Examples of the types of winding state of the rope R include the same types as those of the winding state determination system 10 of FIG. 1.

[0059] [Fourth embodiment] <Winding status detection system> Figure 4 shows a modified example of the winding condition determination systems 10, 20, and 30 shown in Figures 1 to 3. A control unit 46 shown in Figure 4 can be used in place of the determination units 12, 22, and 32 shown in Figures 1 to 3. The control unit 46 includes a determination unit 42, an operation history acquisition unit 47, and a prediction unit 48.

[0060] (Control unit) The control unit 46 can be configured to include a processor such as a CPU and a program memory that stores programs executed by the processor. The control unit 46 may also include a GPU.

[0061] [Discrimination section] The discrimination unit 42 discriminates the winding state of the rope R based on the information of the sound collected by the sound collection device 11. The specific configuration of the discrimination unit 42 can be the same as that of the discrimination units 12, 22, and 32 in each embodiment.

[0062] [Operation History Acquisition Department] The operation history acquisition unit 47 acquires operation history information of the winch drum 100 regarding winding and unwinding of the rope R. The operation history acquisition unit 47 acquires information such as the number of rotations of the winch drum 100, the number of wound layers of the rope R, the number of times the layers of the rope R have changed, etc. The operation history acquisition unit 47 may acquire the operation history information from the sound collection device 11, the imaging device 24, the sensor 35, etc. Furthermore, the operation history acquisition unit 47 may acquire the operation history information based on the drive history of the winch drum 100, or may acquire the operation history information from other devices, etc.

[0063] [Prediction Department] The prediction unit 48 predicts the degree of deterioration of the rope R based on information including the sound collected by the sound collection device 11. The prediction unit 48 may predict the degree of deterioration of the rope R based on the sound information and the operation history information, or may predict the degree of deterioration of the rope R based on information on the winding state of the rope R determined by the determination unit 42 and the operation history information.

[0064] The prediction unit 48 may predict the current deterioration state as the deterioration state of the rope R, or may predict the remaining life until replacement or repair of the rope R. Since the prediction unit 48 predicts the deterioration state of the rope R, the winding state determination system can know in advance when to replace or repair the rope R. As a result, it is possible to suppress a decrease in the operating rate of the machine due to a malfunction of the rope R.

[0065] The prediction unit 48 may be configured to output information on the degree of deterioration from input data based on information on the sound collected by the sound collection device 11, using a machine learning model that has been machine-learned using, for example, known input data and parameters that indicate the degree of deterioration of the rope R for that input data as learning data. For example, the prediction unit 48 may be configured to output information on the degree of deterioration from input data that includes the sound information and the operation history information, or may be configured to output information on the degree of deterioration from input data that includes information on the winding state of the rope R determined by the determination unit 42 and the operation history information. A neural network may be used for the machine learning of the machine learning model.

[0066] [Fifth embodiment] <Construction machinery> The construction machine 50 in FIG. 5 includes a lower traveling body 51, an upper rotating body 52 rotatably mounted on the lower traveling body 51, and a hoisting member 53 attached to the upper rotating body 52 so as to be able to be raised or lowered. In this embodiment, the construction machine 50 is a crane. The hoisting member 53 includes, for example, a boom attached to the upper rotating body 52 so as to be able to be raised or lowered, and a jib connected to the tip of the boom. The construction machine 50 also includes a gantry 54 disposed on the upper rotating body 52, a rope R that is used by being stretched across the hoisting member 53 in the longitudinal direction, and a winch drum 100 around which the rope R is wound. The construction machine 50 also includes a winding state determination system that determines the winding state of the rope R on the winch drum 100. The winding state determination system can be the winding state determination system shown in FIGS. 1 to 4. The winding state determination system includes a sound collection device 11 that collects sound generated when the rope R is wound. The winding state determination system also includes a mounting fixture 60 for mounting the sound collector 11 on the construction machine 50.

[0067] The construction machine 50 is equipped with the winding state determination system, so that the winding state of the rope R on the winch drum 100 can be determined easily and reliably.

[0068] (Mounting fixture) 6, the mounting fixture 60 has a holding part 61 that holds the sound collection device 11, a cover 62 that covers at least a part of the sound collection device 11, and a fixing part 63 that fixes the holding part 61 to the construction machine 50. Because the mounting fixture 60 is configured in this way, the winding state determination system can more easily and reliably determine the winding state of the rope R on the construction machine 50.

[0069] The mounting fixture 60 is configured to enable the sound collection device 11 to be attached to the gantry 54. By attaching the sound collection device 11 to the gantry 54 with the mounting fixture 60, the sound of the rope R when it is being wound onto the winch drum 100 can be easily collected, and for example, the sound when the layers of the rope R change can be easily collected.

[0070] The holding unit 61 holds the sound collector 11 in a state where it is spaced apart from the surface of the gantry 54. The holding unit 61 may have a support pillar that stands upright on the surface of the gantry 54.

[0071] The cover 62 covers at least a portion of the sound collector 11, thereby preventing the sound collector 11 from picking up surrounding noise. The cover 62 also prevents foreign matter, rainwater, and the like from adhering to the sound collector 11. If the sound collector 11 is a directional microphone, it is preferable that the cover 62 is not positioned within the directivity range of the sound collector 11.

[0072] The fixed part 63 is fixed to the gantry 54 with the holding part 61 and the cover 62 attached. The fixed part 63 may be, for example, a band-shaped body that is wrapped around the gantry 54. There are no particular limitations on the means for attaching the holding part 61 and the cover 62 to the fixed part 63, and they may be attached using, for example, known pins.

[0073] [Other embodiments] The above-described embodiments do not limit the configuration of the present invention. Therefore, the above-described embodiments may include omissions, substitutions, or additions of components based on the description in this specification and common general technical knowledge, and all of these should be construed as belonging to the scope of the present invention.

[0074] For example, the winding state determination system may be configured to acquire rope winding position information and arrangement information based on information such as the number of rotations of the winch drum.

[0075] In the winding state determination system, each unit, such as the sound collection device and the determination unit, may be connected by wire or wirelessly. For example, when each unit of the winding state determination system is connected by wire, the wiring may extend to the cab of the construction machine along the same route.

[0076] In the above embodiment, the configuration in which the imaging device acquires the winding position information of the rope has been described. However, in the winding state determination system, the imaging device may be configured to acquire the state of the rope itself.

[0077] The construction machine is not limited to the crane described above, and the rope to be identified by the winding state identification system is not limited to a rope that is laid along the longitudinal direction of the hoisting member.

[0078] When the winding state determination system is installed on a construction machine, the mounting means and mounting positions of each part, such as the sound collector, are not limited to the configurations described in the above embodiment. For example, the sound collector may be installed on a mounting bracket of a winch drum, or on an elevation member such as a boom. [Explanation of symbols]

[0079] 10, 20, 30 winding status detection system 11 Sound collection device 12, 22, 32, 42 Discrimination section 13 Display section 24 Imaging device 35 sensors 46 Control Unit 47 Operation history acquisition unit 48 Prediction Department 50 Construction machinery 51 Undercarriage 52 Upper rotating body 53 Undulating member 54 Gantry 60 Mounting fixture 61 Holding part 62 Cover 63 Fixed part 100 winch drum R rope

Claims

1. A winding state determination system for determining a winding state of a rope on a winch drum, a sound collecting device that collects sounds generated when the rope is being wound; a determination unit that determines the winding state of the rope based on information about the sound collected by the sound collection device; Equipped with Winding status detection system.

2. Further provided is an imaging device that images the winding position of the rope on the winch drum, 2. The winding state determination system according to claim 1, wherein the determination unit determines the winding state of the rope based on information about the sound and information about the winding position imaged by the imaging device.

3. Further provided is a sensor capable of acquiring position information on the circumferential surface of the winch drum of the rope wound around the winch drum, 2. The winding state determination system according to claim 1, wherein the determination unit determines the winding state of the rope based on the sound information and the arrangement information.

4. The winding condition determination system according to claim 1, further comprising a prediction unit that predicts a degree of deterioration of the rope based on information including the sound.

5. 2. The winding state determination system according to claim 1, wherein the sound collection device is a directional microphone.

6. The winding condition determination system according to claim 1, further comprising a display unit that displays the determination result of the determination unit.

7. 2. The winding state determination system according to claim 1, wherein the determination unit determines the type of winding state of the rope.

8. The winding state determination system according to any one of claims 1 to 7, which is used for construction machinery.

9. Further provided is a mounting fixture for mounting the sound collecting device on a construction machine, The winding state determination system according to claim 8, wherein the mounting fixture has a holding portion that holds the sound collecting device, a cover that covers at least a portion of the sound collecting device, and a fixing portion that fixes the holding portion to a construction machine.

10. A construction machine equipped with the winding state determination system according to claim 8.

Images