Crane monitoring system and crane system

Abstract

The utility model provides a kind of crane monitoring system and crane system, it is related to mechanical safety technical field.The crane monitoring system includes data acquisition device, video recorder, display device, switch, gateway and cloud platform, the data acquisition device includes first data acquisition device, second data acquisition device and camera, the first data acquisition device is connected with the display device, the camera is connected with the video recorder, the display device, the video recorder and the second data acquisition device are connected with the switch respectively, the switch is connected with the gateway, the gateway is connected with the cloud platform;Multiple the camera is respectively set with the running track of crab of crane, the running track of trolley, the moving track of main hook, the moving track of vice hook, hoist, electrical room and cab corresponding.The utility model can realize the effective monitoring of crane.

Description

Technical Field

[0001] This utility model relates to the field of mechanical safety technology, and more specifically, to a crane monitoring system and a crane system. Background Technology

[0002] Cranes are mechanical devices used for vertically lifting and horizontally moving heavy objects. They effectively improve work efficiency and reduce labor costs, and are widely used in construction, logistics, ports, and many other fields. However, due to their large load capacity and complex working environment, cranes are prone to accidents if operated improperly or not maintained in a timely manner. Therefore, it is necessary to monitor the operating status of cranes.

[0003] Currently, crane monitoring typically relies on manual labor, but this method has certain limitations. First, it's difficult for workers to maintain high concentration for extended periods, making them prone to monitoring errors due to fatigue or negligence. Second, it's challenging for workers to accurately assess the complex operational states of cranes. Utility Model Content

[0004] The problem this invention addresses is how to achieve effective monitoring of cranes.

[0005] To address the aforementioned problems, this utility model provides a crane monitoring system and a crane system.

[0006] In a first aspect, this utility model provides a crane monitoring system, including: a data acquisition device, a video recorder, a display device, a switch, a gateway, and a cloud platform. The data acquisition device includes a first data acquisition device, a second data acquisition device, and a camera. The first data acquisition device is connected to the display device, the camera is connected to the video recorder, the display device, the video recorder, and the second data acquisition device are respectively connected to the switch, the switch is connected to the gateway, and the gateway is connected to the cloud platform.

[0007] The multiple cameras are respectively set up with respect to the crane's main trolley travel track, the trolley travel track, the main hook movement trajectory, the auxiliary hook movement trajectory, the winch, the electrical room, and the driver's cab.

[0008] Optionally, the first data acquisition device includes a limiter, which is disposed at both ends of the running track of the winch, the trolley, and the main vehicle, and the limiter is connected to the input end of the display device.

[0009] Optionally, the first data acquisition device includes a multi-function instrument, the input terminal of which is connected to the power supply of the crane, and the serial communication interface of which is connected to the serial communication interface of the display device.

[0010] Optionally, the second data acquisition device includes a weight limiter instrument and a weight sensor. The weight sensor is disposed at the fixed end of the wire rope of the crane. The weight sensor is connected to the input terminal of the weight limiter instrument, and the network interface of the weight limiter instrument is connected to the network interface of the switch.

[0011] Optionally, the second data acquisition device further includes a wind speed sensor, which is disposed at the end where the main beam of the crane connects to the rigid outrigger, and the wind speed sensor is connected to the input terminal of the weight limiter instrument.

[0012] Optionally, the display device includes a programmable controller and a display, the programmable controller is connected to the display, the first data acquisition device is connected to the programmable controller, and the programmable controller is connected to the switch.

[0013] Optionally, the first data acquisition device includes an encoder, which includes a first encoder and a second encoder. The first encoder is disposed on the running wheels of the large vehicle, and the second encoder is disposed on the running wheels of the small vehicle. The first encoder and the second encoder are respectively connected to the input terminal of the programmable controller.

[0014] Optionally, the crane monitoring system further includes an alarm, which is installed in the cab and connected to the output of the programmable controller.

[0015] Optionally, the crane monitoring system further includes a switching power supply, the input of which is connected to the power supply of the crane, and the output of which is connected to the gateway.

[0016] Secondly, this utility model provides a crane system, including the crane monitoring system and the crane as described in the first aspect.

[0017] The beneficial effects of this crane monitoring system and crane system are as follows: A first data acquisition device and a second data acquisition device acquire different operating parameters of the crane. Data acquired by the first data acquisition device is directly transmitted to the display device, while data acquired by the second data acquisition device is transmitted to the display device via a switch. Simultaneously, a camera acquires video data from key locations on the crane to comprehensively capture its operating status. The video data is first stored by a video recorder and then transmitted to the display device via the switch. The display device receives and displays data from the first data acquisition device, the second data acquisition device, and the camera. The operator in the cab can combine the operating parameters and video on the display device in real time to determine if the crane is malfunctioning. When the crane is malfunctioning, the operator can stop the crane, avoiding monitoring blind spots caused by isolated data and achieving effective crane monitoring. Furthermore, the display device transmits data from the first data acquisition device to the switch, which transmits data from the first data acquisition device, the second data acquisition device, and the camera to the gateway. The gateway unifies the industrial protocols for these data and transmits the data with the unified industrial protocol to the cloud platform. Operators can remotely view the crane's operating parameters and video from key locations on the crane, and control the crane's operating status, achieving effective crane monitoring. The switch is used not only for data transmission between the second data acquisition device and the camera and display device, but also for data transmission between the display device, the second data acquisition device, the camera and the gateway, thus solving the problem of the limited number of interfaces on the display device. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of the crane monitoring system in an embodiment of the present utility model;

[0019] Figure 2 This is a structural block diagram of a crane monitoring system according to another embodiment of the present invention;

[0020] Figure 3 This is a structural block diagram of a crane monitoring system in another embodiment of the present invention. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0022] It should be understood that the steps described in the method embodiments of this utility model may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this utility model is not limited in this respect.

[0023] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0024] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0025] like Figure 1 As shown in the figure, a crane monitoring system provided by this utility model includes: a data acquisition device, a video recorder, a display device, a switch, a gateway, and a cloud platform. The data acquisition device includes a first data acquisition device, a second data acquisition device, and a camera. The first data acquisition device is connected to the display device, the camera is connected to the video recorder, the display device, the video recorder, and the second data acquisition device are respectively connected to the switch, the switch is connected to the gateway, and the gateway is connected to the cloud platform.

[0026] The multiple cameras are respectively set up with respect to the crane's main trolley travel track, the trolley travel track, the main hook movement trajectory, the auxiliary hook movement trajectory, the winch, the electrical room, and the driver's cab.

[0027] Specifically, to ensure the safe operation of the crane, a first data acquisition device and a second data acquisition device are installed to obtain the crane's operating parameters, and the first data acquisition device is connected to a display device, and the second data acquisition device is connected to a display device, respectively. In addition, multiple cameras are installed to acquire video data from the crane, and the cameras are connected to the display device. At least one camera is used to monitor the movement of the main trolley in real time, such as whether the main trolley crosses boundaries, jams, or exceeds speed limits; at least one camera is used to monitor the movement of the auxiliary hook in real time, such as whether the auxiliary hook jams, exceeds speed limits, or collides with other mechanisms; at least one camera is used to monitor the movement of the auxiliary hook in real time, such as whether the auxiliary hook jams, exceeds speed limits, or collides with other mechanisms; at least one camera is used to monitor the operation of the winch in real time, such as whether the winch jams, rotates too fast, or rotates too slow; at least one camera is used to monitor the safety of the electrical room in real time, such as whether a fire or explosion has occurred in the electrical room; and at least one camera is used to monitor the operation of the operator in the cab and the safety of the cab itself. The display device is installed in the operator's cab. The operator in the cab can comprehensively analyze the crane's operating status in real time through the operating parameters and videos on the display device, and take timely control when the crane malfunctions, thereby achieving effective monitoring of the crane.

[0028] To analyze crane malfunctions through video playback, a video recorder is installed, and cameras are connected to a display device via the recorder to store video data. The recorder can be installed in the operator's cab. Since operators in the cab need to control the crane's various mechanisms (such as the movement of the trolley and crane, and the movement of the main and auxiliary hooks) and monitor the crane, monitoring errors may occur (such as failing to detect wire rope wear in time). Therefore, a gateway and a cloud platform are set up. The gateway is connected to the display device, and the cloud platform is connected to the gateway, enabling remote monitoring of the crane by other operators. The gateway is used for data conversion to unify industrial protocols. The gateway can be installed in the electrical room. This invention does not modify the gateway; the gateway performs data conversion using existing technology. Considering the limited number of interfaces on the display device, a switch is used as a data transmission hub. Cameras are connected to the display device via the recorder and switch; a second data acquisition device is connected to the display device via the switch; and the gateway is connected to the display device via the switch. The switch can be installed in the operator's cab.

[0029] In some embodiments, the first data acquisition device acquires the crane's electrical parameters (such as current, voltage, and electrical quantity), trolley travel displacement, gantry travel displacement, and the operating status of each safety device. The operating status of each safety device includes the on / off state of the trolley's windproof device, the on / off state of the winch's high-speed brake, and the on / off state of the winch's low-speed brake. The second data acquisition device acquires the crane's main hook lifting capacity and auxiliary hook lifting capacity.

[0030] In other embodiments, the first data acquisition device acquires the crane's main hook lifting capacity, auxiliary hook lifting capacity, trolley travel displacement, gantry travel displacement, and the operating status of each safety device. The operating status of each safety device includes the on / off status of the trolley's windproof device, the on / off status of the winch's high-speed brake, and the on / off status of the winch's low-speed brake. The second data acquisition device acquires the crane's electrical parameters (such as current, voltage, and electrical quantity).

[0031] In this embodiment, the first data acquisition device and the second data acquisition device acquire different operating parameters of the crane, respectively. Data acquired by the first data acquisition device is directly transmitted to the display device, while data acquired by the second data acquisition device is transmitted to the display device via a switch. Simultaneously, a camera acquires video data from key locations on the crane to comprehensively capture its operating status. The video data is first stored by a video recorder and then transmitted to the display device via the switch. The display device receives and displays data from the first data acquisition device, the second data acquisition device, and the camera. The operator in the cab can combine the operating parameters and video on the display device in real time to determine if the crane is malfunctioning. When the crane is malfunctioning, the operator can stop the crane, avoiding monitoring blind spots caused by isolated data and achieving effective crane monitoring. Furthermore, the display device transmits data from the first data acquisition device to the switch, which transmits data from the first data acquisition device, the second data acquisition device, and the camera to the gateway. The gateway unifies the industrial protocol for this data and transmits the unified industrial protocol data to the cloud platform. The operator can remotely view the crane's operating parameters and video from key locations on the crane, and control the crane's operating status, achieving effective crane monitoring. The switch is used not only for data transmission between the second data acquisition device and the camera and display device, but also for data transmission between the display device, the second data acquisition device, the camera and the gateway, thus solving the problem of the limited number of interfaces on the display device.

[0032] Optionally, such as Figure 2As shown, the first data acquisition device includes a limiter, which is disposed at both ends of the running track of the winch, the trolley, and the main vehicle, and the limiter is connected to the input end of the display device.

[0033] Specifically, when the winch raises the main hook and auxiliary hook to the preset position, the limit switch will cut off the power, stopping the winch and preventing the load on the main hook and auxiliary hook from colliding with the main beam. When the trolley travels to both ends of its travel track, the limit switch will cut off the power, stopping the trolley and preventing the load on the main hook and auxiliary hook from colliding with the rigid or flexible outriggers. When the trolley travels to both ends of its travel track, the limit switch will cut off the power, stopping the trolley and preventing the crane from overstepping its limits.

[0034] In some embodiments, a counterweight-type limit switch is used at the winch. When the counterweight is in a free-hanging state, the limit switch is in the closed state with the power on. When the winch drives the main hook and auxiliary hook to a preset position, it lifts the counterweight, causing the normally closed contact of the limit switch to open, thereby cutting off the power, stopping the winch from rotating, and stopping the main hook and auxiliary hook from rising. Limit switches are used at the trolley and crane. When the trolley or crane travels to either end of its travel track, a triggering device (such as a safety ruler or a stop block) contacts the limit switch, triggering the internal mechanical structure of the limit switch (such as a lever, shaft, or cam), causing the normally closed contact of the limit switch to open, thereby cutting off the power and stopping the trolley or crane from moving.

[0035] In this optional embodiment, the display device obtains the operating status of the high-speed and low-speed brakes of the winch from the limit switches at the winch. Simultaneously, the display device obtains the operating status of the corresponding brakes from the limit switches at the trolley and crane, respectively. When any safety device (such as the high-speed brake, low-speed brake, trolley brake, or crane brake) is in the closed state, the operator will control the crane to stop operation. Therefore, by setting limit switches, effective monitoring of the crane can be achieved, improving the safety of crane operation.

[0036] Optionally, such as Figure 2 As shown, the first data acquisition device includes a multi-function instrument, the input terminal of which is connected to the power supply of the crane, and the serial communication interface of which is connected to the serial communication interface of the display device.

[0037] Specifically, the multi-function instrument samples the current and voltage in the crane's power supply in real time through current sampling circuits and voltage sampling circuits, respectively. Current sampling can be achieved using a current transformer, and voltage sampling can be achieved using a resistor divider. A signal conditioning circuit preprocesses the analog signal, performing functions such as signal amplification, common-mode rejection, and impedance matching. An analog-to-digital converter converts the analog signal into a digital signal. A microprocessor calculates electrical parameters such as current, voltage, and power based on a preset algorithm. These electrical parameters are then transmitted to a display device via a serial communication interface. This serial communication interface typically uses standard industrial communication protocols such as Modbus or PROFIBUS to ensure data transmission reliability and compatibility. In some embodiments, the serial communication interface is an RS485 interface. Furthermore, the multi-function instrument is equipped with a display screen to show the crane's electrical parameters in real time. The multi-function instrument can be installed in an electrical room.

[0038] In this optional embodiment, the display device receives the crane's electrical parameters (such as current, voltage, and power) from a multi-functional instrument. When the electrical parameters exceed a preset range, the operator will control the crane to stop operating. For example, by monitoring changes in current, it is possible to detect whether the crane motor is overloaded in a timely manner; by monitoring changes in voltage, it is possible to avoid mechanical failures caused by voltage fluctuations. Therefore, setting up a multi-functional instrument enables effective monitoring of the crane and improves the safety of crane operation.

[0039] Optionally, such as Figure 2 As shown, the second data acquisition device includes a weight limiter instrument and a weight sensor. The weight sensor is disposed at the fixed end of the wire rope of the crane. The weight sensor is connected to the input terminal of the weight limiter instrument, and the network interface of the weight limiter instrument is connected to the network interface of the switch.

[0040] Optionally, such as Figure 2 As shown, the second data acquisition device also includes a wind speed sensor, which is installed at the end where the main beam of the crane connects to the rigid outrigger, and the wind speed sensor is connected to the input terminal of the weight limiter instrument.

[0041] Specifically, the weight sensor includes a first weight sensor and a second weight sensor. The first weight sensor is installed at the fixed end of the wire rope corresponding to the main hook, and the second weight sensor is installed at the fixed end of the wire rope corresponding to the auxiliary hook. The weight sensor collects the tension of the wire rope in real time and transmits the corresponding analog signal to the weight limiter instrument. A common type of weight sensor is the resistance strain gauge type, which utilizes the characteristics of a resistance strain gauge. When an elastic element (such as a strain cylinder) deforms under external force, the resistance strain gauge attached to it deforms accordingly. The change in resistance causes the bridge circuit to lose balance, outputting a weak analog signal proportional to the external force. The weight limiter instrument amplifies the analog signal through an amplifier. An analog-to-digital converter converts the analog signal into a digital signal. A microprocessor calculates the weight value according to a preset algorithm and compares the weight value with a first preset threshold. In some embodiments, when the weight value is greater than 90% of the first preset threshold and less than or equal to 100% of the first preset threshold, the weight limiter instrument issues an audible and visual warning signal; when the weight value is greater than 100% of the first preset threshold and less than or equal to 110% of the first preset threshold, the weight limiter instrument issues an audible and visual alarm signal; when the weight value is greater than 110% of the first preset threshold, the weight limiter instrument stops the raising of the main hook and auxiliary hook. The weight limiter instrument can be installed in the cab.

[0042] A wind speed sensor collects wind speed data in real time and transmits the corresponding analog signal to the weight limiter instrument. Common ultrasonic wind speed sensors measure wind speed using the ultrasonic time-of-flight method. Since the speed of ultrasound waves varies with wind direction and speed as they propagate through the air, the wind speed can be calculated by measuring the time difference of ultrasound propagation in the downwind and upwind directions. The weight limiter instrument amplifies the analog signal using an amplifier. An analog-to-digital converter converts the analog signal into a digital signal. A microprocessor calculates the wind speed value based on a preset algorithm and compares the wind speed value with a second preset threshold. In some embodiments, the second preset threshold is 10.7 m / s. When the wind speed value exceeds the second preset threshold, the weight limiter instrument issues an audible and visual alarm signal.

[0043] In some embodiments, the weight limiter instrument is connected to the switch via an RJ45 interface, and the switch is connected to the display device.

[0044] In this optional embodiment, the weight limiter instrument receives the weight value of the load collected by the weight sensor and the wind speed value of the working environment collected by the wind speed sensor. It can promptly alert the operator when the load weight is greater than 90% of a first preset threshold but less than or equal to 110% of the first preset threshold, and when the wind speed is greater than a second preset threshold. If the load weight exceeds 110% of the first preset threshold, the raising of the main and auxiliary hooks can be stopped, improving the safety of crane operation. The display device receives the weight and wind speed values ​​from the weight limiter instrument via a switch, allowing the operator to control the crane to stop operation when the load weight exceeds a third preset threshold and when the wind speed exceeds a fourth preset threshold, further improving crane operation safety. The third preset threshold is greater than 110% of the first preset threshold, and the fourth preset threshold is greater than the second preset threshold. Therefore, by setting up a weight limiter instrument, a weight sensor, and a wind speed sensor, effective monitoring of the crane can be achieved.

[0045] Optionally, such as Figure 3 As shown, the display device includes a programmable controller and a display. The programmable controller is connected to the display. The first data acquisition device is connected to the programmable controller. The programmable controller is connected to the switch.

[0046] Specifically, the crane's operating parameters acquired by the first data acquisition device are directly transmitted to the programmable logic controller (PLC), while the crane's operating parameters acquired by the second data acquisition device are transmitted to the PLC via a switch. The PLC can replace the operator in the cab, analyzing the crane's operating status based on the operating parameters and promptly controlling the crane in case of malfunction, thus achieving automated monitoring of the crane. Specifically, the PLC obtains the operating status of safety devices (such as the high-speed brake and low-speed brake of the winch, the brake of the trolley, or the brake of the gantry) from the limit switches. When the operating status is off, the PLC will control the crane to stop. The PLC obtains the crane's electrical parameters (such as current, voltage, and electrical charge) from the multi-function instrument. When the electrical parameters exceed preset ranges, the PLC will control the crane to stop. The PLC obtains the weight value of the load and the wind speed value of the working environment from the weight limiter instrument. When the weight value of the load exceeds a third preset threshold, and / or when the wind speed value of the working environment exceeds a fourth preset threshold, the PLC will control the crane to stop. The display can show the analysis results of the crane's operating status for the operator to view. For example, when the weight of the object exceeds the third preset threshold, the display shows: Attention, the object is overweight! The crane has stopped operating.

[0047] In this optional embodiment, the display device includes a programmable controller and a display. The programmable controller can receive data from the first data acquisition device and the second data acquisition device, and analyze this data to determine whether the crane has malfunctioned. When the crane malfunctions, it controls the crane to stop operating, avoiding safety accidents caused by inaccurate or untimely human judgment. The display can not only show the crane's operating parameters and video of key crane positions, but also the results of the analysis based on the crane's operating parameters, for staff to view and facilitate timely crane maintenance.

[0048] Optionally, such as Figure 3 As shown, the first data acquisition device includes an encoder, which includes a first encoder and a second encoder. The first encoder is disposed on the running wheels of the large vehicle, and the second encoder is disposed on the running wheels of the small vehicle. The first encoder and the second encoder are respectively connected to the input terminal of the programmable controller.

[0049] Specifically, encoders can be either photoelectric encoders or magnetic encoders. Photoelectric encoders utilize the principle of photoelectric induction, converting mechanical motion into electrical signals through a light source, code disk, and photosensitive elements. Specifically, the code disk has regularly spaced transparent and opaque areas. When the wheels of the trolley rotate, they drive the code disk to rotate, and the light emitted by the light source passes through the transparent areas of the code disk and is received by the photosensitive elements, thus generating an electrical signal. Magnetic encoders utilize the Hall effect, converting mechanical motion into electrical signals through a magnetic ring and magnetically sensitive elements. Specifically, when the wheels of the trolley rotate, they drive the magnetic ring to rotate, and the magnetically sensitive elements detect changes in the magnetic field, generating an electrical signal.

[0050] When the photoelectric encoder and magnetic encoder are incremental, the generated electrical signals are pulse signals. The programmable controller calculates the displacement of the trolley and the carriage by counting the number of pulse signals. When the photoelectric encoder and magnetic encoder are absolute, the generated electrical signals represent the positions of the trolley and the carriage. The programmable controller calculates the displacement of the trolley and the carriage based on their positions.

[0051] In this optional embodiment, since the trolley is used to move the crane, the programmable controller (PCC) can determine the crane's position, displacement, and speed using the first encoder, thereby controlling the crane to stop operation when it overtravels, jams, or overspeeds. Since the trolley is used to move the main and auxiliary hooks, the PCC can determine their position, displacement, and speed using the second encoder, thereby controlling the crane to stop operation when the main and auxiliary hooks jam, overspeed, or collide with rigid or flexible outriggers. Therefore, setting both the first and second encoders enables effective monitoring of the crane and improves the safety of crane operation.

[0052] Optionally, such as Figure 3 As shown, the crane monitoring system also includes an alarm, which is installed in the cab and connected to the output of the programmable controller.

[0053] Specifically, an alarm system with both audible and visual warning functions is used, such as a combination of a high-decibel buzzer and flashing LED lights. This design ensures that operators receive information about crane malfunctions even in noisy environments. When a limit switch causes the programmable controller (PCC) to stop the crane, the alarm emits a low-frequency alarm and a flashing yellow light; when an encoder causes the PCC to stop the crane, the alarm emits a low-frequency alarm and a continuous yellow light; when a multifunction meter causes the PCC to stop the crane, the alarm emits a high-frequency alarm and a flashing red light; and when a weight limiter meter causes the PCC to stop the crane, the alarm emits a high-frequency alarm and a continuous red light.

[0054] In this optional embodiment, an alarm is provided. When the programmable controller stops the crane, the programmable controller sends an alarm command to the alarm. Upon receiving the alarm command, the alarm immediately sounds an alarm, so that the operator in the cab can receive information that the crane is in a faulty state in a timely manner, which is beneficial to the maintenance of the crane.

[0055] Optionally, such as Figure 2 and 3 As shown, the crane monitoring system also includes a switching power supply, the input of which is connected to the power supply of the crane, and the output of which is connected to the gateway.

[0056] Specifically, the switching power supply converts the input AC voltage into a stable DC voltage through a rectifier circuit and a filter circuit; it generates a high-frequency pulse voltage by adjusting the on-time of the switching transistor (such as a MOSFET) in the PWM control circuit; the high-frequency pulse voltage is stepped down through a transformer; and finally, a stable DC voltage suitable for the gateway is obtained through the rectifier circuit and filter circuit. The switching power supply can be installed in an electrical room. In some embodiments, the crane's power supply provides 220V AC voltage, which is converted into 24V DC voltage by the switching power supply for use by the gateway.

[0057] In this optional embodiment, a switching power supply is provided to ensure that the gateway can operate normally, converting the crane's power supply voltage to a voltage suitable for the gateway.

[0058] This utility model provides a crane system, including a crane monitoring system and a crane as described above.

[0059] The advantages of the crane system in this embodiment over the prior art are the same as those of the crane monitoring system described above, and will not be repeated here.

[0060] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A crane monitoring system, characterized in that, include: The system includes a data acquisition device, a video recorder, a display device, a switch, a gateway, and a cloud platform. The data acquisition device includes a first data acquisition device, a second data acquisition device, and a camera. The first data acquisition device is connected to the display device, the camera is connected to the video recorder, the display device, the video recorder, and the second data acquisition device are respectively connected to the switch, the switch is connected to the gateway, and the gateway is connected to the cloud platform. The multiple cameras are respectively set up with respect to the crane's main trolley travel track, the trolley travel track, the main hook movement trajectory, the auxiliary hook movement trajectory, the winch, the electrical room, and the driver's cab.

2. The crane monitoring system according to claim 1, characterized in that, The first data acquisition device includes a limit switch, which is disposed at both ends of the running track of the winch, the trolley, and the main vehicle, and is connected to the input end of the display device.

3. The crane monitoring system according to claim 1, characterized in that, The first data acquisition device includes a multi-function instrument, the input terminal of which is connected to the power supply of the crane, and the serial communication interface of the multi-function instrument is connected to the serial communication interface of the display device.

4. The crane monitoring system according to claim 1, characterized in that, The second data acquisition device includes a weight limiter instrument and a weight sensor. The weight sensor is installed at the fixed end of the wire rope of the crane. The weight sensor is connected to the input terminal of the weight limiter instrument. The network interface of the weight limiter instrument is connected to the network interface of the switch.

5. The crane monitoring system according to claim 4, characterized in that, The second data acquisition device also includes a wind speed sensor, which is located at the end where the main beam of the crane connects to the rigid outrigger, and is connected to the input terminal of the weight limiter instrument.

6. The crane monitoring system according to any one of claims 1 to 5, characterized in that, The display device includes a programmable controller and a display. The programmable controller is connected to the display. The first data acquisition device is connected to the programmable controller. The programmable controller is connected to the switch.

7. The crane monitoring system according to claim 6, characterized in that, The first data acquisition device includes an encoder, which includes a first encoder and a second encoder. The first encoder is disposed on the running wheels of the large vehicle, and the second encoder is disposed on the running wheels of the small vehicle. The first encoder and the second encoder are respectively connected to the input terminal of the programmable controller.

8. The crane monitoring system according to claim 6, characterized in that, The crane monitoring system also includes an alarm, which is installed in the cab and connected to the output of the programmable controller.

9. The crane monitoring system according to claim 1, characterized in that, The crane monitoring system also includes a switching power supply, the input of which is connected to the power supply of the crane, and the output of which is connected to the gateway.

10. A crane system, characterized in that, Includes the crane monitoring system and crane as described in any one of claims 1 to 9.

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