Power supply system for tower crane monitoring system, tower crane monitoring system and tower crane

Abstract

The present invention relates to the field of engineering safety technology, and discloses a power supply system, a tower crane monitoring system and a tower crane. The power supply system includes: a first wireless charging device, including a first power supply module installed at the boom and powered by the tower crane and a first charging module installed on a trolley, which is used to power the first charging module through the first power supply module; a first power storage device, which is installed on the trolley and is used to store the power obtained by the first charging module; a second wireless charging device, which includes a second power supply module installed on the trolley and connected to the first power storage device and a second charging module installed on the hook, which is used to power the second charging module by the second power supply module; and a second power storage device, which is installed on the hook and connected to the second charging module, which is used to store the power obtained by the second charging module and power the second sensor on the hook. The present invention realizes non-contact wireless charging between the tower crane, the trolley and the hook.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering safety, and in particular to a power supply system for a tower crane monitoring system, a tower crane monitoring system and a tower crane. Background Art

[0002] With the development of science and technology and economy, the scale of construction projects is increasing. Accordingly, tower cranes are getting taller and longer, and the blind spots of the drivers on the tower cranes are getting bigger and bigger. As a result, the safety issues caused by the swinging hooks are becoming more and more serious. In this case, more and more people choose to install sensors on the trolleys and hooks of tower cranes to monitor the running trajectory of the hooks to ensure the safety of personnel and property on site. So far, the sensors on the trolleys and hooks are mainly powered by lithium batteries, which requires relevant staff to constantly replace the batteries.

[0003] In order to avoid the defect of constantly replacing batteries, some people in the prior art have tried to achieve charging between the trolley and the root of the boom through rails, but this is a contact-type wired charging. As the wired charging device continues to wear or is exposed outdoors for a long time, it will lead to defects such as failure to charge or gradual exposure of the conductor, which poses a huge risk of leakage for tower cranes that are all conductors. Summary of the invention

[0004] The object of the present invention is to provide a power supply system for a tower crane monitoring system, a tower crane monitoring system and a tower crane, which solves the problem that the hook and the root of the boom have no relatively fixed position, resulting in the inability to realize wireless charging of the hook assembly, and realizes non-contact wireless power supply between the tower crane and the luffing trolley assembly and between the luffing trolley and the hook assembly.

[0005] In order to achieve the above-mentioned object, the present invention provides a power supply system for a tower crane monitoring system, wherein the tower crane includes a cab, a boom, a luffing trolley and a hook, and the power supply system includes: a first wireless charging device, the first wireless charging device including: a first power supply module installed at the root of the boom and connected to the power supply in the cab and a first charging module installed on the luffing trolley, for supplying power to the first charging module through the first power supply module; a first power storage device, the first power storage device is installed on the luffing trolley, for storing power obtained by the first charging module, and for supplying power to a first sensor on the luffing trolley; a second wireless charging device, the second wireless charging device including a second power supply module installed on the luffing trolley and connected to the first power storage device and a second charging module installed on the hook, for supplying power to the second charging module by the second power supply module; and a second power storage device, the second power storage device is installed on the hook and connected to the second charging module, for storing power obtained by the second charging module, and for supplying power to the second sensor on the hook.

[0006] Preferably, the first wireless charging device and the second wireless charging device are devices that perform charging in an electromagnetic induction manner.

[0007] Preferably, the first power supply module and the second power supply module are respectively a first transmitting coil and a second transmitting coil; and the first charging module and the second charging module are respectively a first receiving coil and a second receiving coil.

[0008] Preferably, when the luffing trolley is fully retracted to the root of the boom, the distance between the first transmitting coil and the first receiving coil is within a first preset distance range; and when the hook is retracted to the luffing trolley, the distance between the second transmitting coil and the second receiving coil is within a second preset distance range.

[0009] Preferably, when the luffing trolley is retracted to the root of the boom, the centers of the first transmitting coil and the first receiving coil are aligned and the planes in which the two are located are parallel; and when the hook is retracted to the luffing trolley, the centers of the second transmitting coil and the second receiving coil are aligned and the planes in which the two are located are parallel.

[0010] Preferably, a plane where the first transmitting coil, the first receiving coil, the second transmitting coil and the second receiving coil are located is perpendicular to a horizontal plane.

[0011] Preferably, the first limit baffle at the root of the boom is installed with a first magnetic device or the first limit baffle is a magnetic limit baffle, which is used to adsorb the luffing trolley when the luffing trolley is retracted to the root of the boom; and / or a second limit baffle is installed on the lower side of the luffing trolley or the upper side of the pulley block of the hook, and a second magnetic device is installed on the second limit baffle or the second limit baffle is a magnetic limit baffle, which is used to adsorb the hook and the luffing trolley together when the hook is retracted to the luffing trolley.

[0012] Preferably, the capacity of the first power storage device is at least twice the capacity of the second power storage device.

[0013] Through the above technical scheme, the present invention creatively realizes wireless power supply between the tower crane and the luffing trolley assembly through the first wireless charging device, and realizes wireless power supply between the luffing trolley and the hook assembly through the second wireless charging device, thereby solving the problem that the hook and the root of the boom have no relative fixed position, resulting in the inability to realize wireless charging of the hook assembly, and realizes non-contact wireless power supply between the tower crane and the luffing trolley assembly and between the luffing trolley and the hook assembly.

[0014] The second aspect of the present invention further provides a tower crane monitoring system, the tower crane comprising: a cab, a lifting arm, a luffing trolley and a hook, the tower crane monitoring system comprising: the power supply system for the tower crane monitoring system.

[0015] Preferably, the tower crane monitoring system also includes: a control device installed in the cab, a first sensor installed on the luffing trolley, a second sensor installed on the hook and a wireless transmission device, the wireless transmission device including: a first wireless transmission module installed at the root of the boom and connected to the control device by wired or wireless means, and a second wireless transmission module installed on the luffing trolley and connected to the first sensor, for wirelessly transmitting data between the control device and the first sensor; and a third wireless transmission module installed on the luffing trolley and connected to the second wireless transmission module, and a fourth wireless transmission module installed on the hook, for indirectly wirelessly transmitting data between the control device and the second sensor through the first wireless transmission module and the second wireless transmission module.

[0016] Preferably, the first wireless transmission module and the second wireless transmission module are arranged face to face; and the third wireless transmission module and the fourth wireless transmission module are arranged face to face.

[0017] The specific details and benefits of the tower crane monitoring system provided by the present invention can be found in the above description of the power supply system for the tower crane monitoring system, which will not be repeated here.

[0018] The third aspect of the present invention further provides a tower crane, wherein the tower crane comprises the tower crane monitoring system.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural diagram of a power supply system for a tower crane monitoring system provided by an embodiment of the present invention;

[0022] Figure 2 is a structural diagram of a power supply system for a tower crane monitoring system provided by an embodiment of the present invention; and

[0023] Figure 3 is a structural diagram of a tower crane monitoring system provided by an embodiment of the present invention; and

[0024] Figure 4 It is a structural diagram of a wireless transmission device provided by an embodiment of the present invention.

[0025] Description of Reference Numerals

[0026] 1 First transmitting coil 2 First receiving coil

[0027] 3 Second transmitting coil 4 Second receiving coil

[0028] 5, 6, 7 Camera 8 220V AC power supply

[0029] 9 switch 10 first wireless charging device

[0030] 11-14 Wireless bridge 16 First power supply module

[0031] 18 first charging module 20 first power storage device

[0032] 25, 45 lithium battery 30 second wireless charging device

[0033] 32 second power supply module 34 second charging module

[0034] 40 Second power storage device 100 First wireless transmission module

[0035] 110 second wireless transmission module 120 third wireless transmission module

[0036] 130 Fourth wireless transmission module DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0038] Before introducing the specific embodiments of the present invention, the design idea of ​​the present invention is briefly introduced. Since the hook and the root of the boom have no relatively fixed position, it is impossible to realize wireless charging of the hook assembly. The present invention changes the previous fixed way of thinking and no longer uses the power supply of the tower crane as the direct power source for each power module on the hook. Instead, the power storage device on the luffing trolley is used as the direct power source for each power module on the hook side, that is, the power storage device on the luffing trolley is used as a secondary power source, thereby realizing non-contact wireless power supply between the tower crane and the luffing trolley assembly and between the luffing trolley and the hook assembly.

[0039] Figure 1 is a structural diagram of a power supply system for a tower crane monitoring system provided by an embodiment of the present invention. The tower crane includes a cab, a lifting arm, a luffing trolley and a hook. Figure 1 As shown, the power supply system may include: a first wireless charging device 10, which may include: a power source (for example, Figure 3 A first power supply module 16 connected to the 220V AC power supply 8) and a first charging module 18 installed on the boom-changing trolley, which is used to power the first charging module 18 through the first power supply module 16; a first power storage device 20, which is installed on the boom-changing trolley, and is used to store the power obtained by the first charging module 18 and power the first sensor on the boom-changing trolley; a second wireless charging device 30, which may include a second power supply module 32 installed on the boom-changing trolley and connected to the first power storage device and a second charging module 34 installed on the hook, and is used to power the second charging module 34 by the second power supply module 32; and a second power storage device 40, which is installed on the hook and connected to the second charging device 34, and is used to store the power obtained by the second charging module 34 and power the second sensor on the hook. Wherein, the first power storage device 20 and the second power storage device 40 may be lithium batteries (such as Figure 3 as shown) or any other reasonable power storage device.

[0040] The first wireless charging device 10 and the second wireless charging device 30 may be devices that use electromagnetic induction to charge. Accordingly, the first power supply module 16 and the second power supply module 32 are respectively the first transmitting coil 1 and the second transmitting coil 3; and the first charging module 18 and the second charging module 34 are respectively the first receiving coil 2 and the second receiving coil 4. Figure 3 shown.

[0041] The tower crane does not work 24 hours a day. When the tower crane is working, the power supply system is in working state (the power supply system itself is not charged at this time), and the first power storage device 20 is used to power various sensors on the luffing trolley (for example, the camera 5 for collecting the image of the hook and other sensors (not shown) for collecting the relevant parameters of the operating posture of the hook or the boom, etc.) and other power modules (for example, wireless bridges 12 and 13). At the same time, the second power storage device 40 is used to power various sensors on the hook (for example, the camera 6 and camera 7 for collecting the image of the hook and other sensors (not shown) for collecting the relevant parameters of the operating posture of the hook, etc.) and other power modules (for example, wireless bridge 14). Figure 3 When the tower crane is not working (such as at night or during a lunch break), the hook will be retracted to the part close to the luffing trolley according to the standard operation of the tower crane, and the luffing trolley will be retracted to the root of the boom, as shown in the figure. Figure 3 In this case, the embodiment of the present invention can control the charging efficiency of the wireless power supply system by setting the distance and / or relative effective area between the first transmitting coil and the first receiving coil, and the distance and / or relative effective area between the second transmitting coil and the second receiving coil.

[0042] It has been found that the electromagnetic properties of the transmitting coil and the receiving coil determine that the charging efficiency between the two is optimal within a specific spacing range. Therefore, in one embodiment of the present invention, when the luffing trolley is fully retracted to the root of the boom, the spacing between the first transmitting coil 1 and the first receiving coil 2 is a first preset spacing range; and when the hook is retracted to the luffing trolley, the spacing between the second transmitting coil 3 and the second receiving coil 4 is a second preset spacing range. Wherein, when the relative effective area of ​​the coil is not less than 90%, the first preset spacing range (or the second preset spacing range) can be 15-30mm.

[0043] like Figure 2As shown, when the hook is retracted close to the luffing trolley and the distance between the second transmitting coil 3 and the second receiving coil 4 reaches a second preset distance range (for example, 15-30 mm), the second transmitting coil 3 and the second receiving coil 4 are automatically turned on, that is, the luffing trolley can charge the hook through the second transmitting coil 3 and the second receiving coil 4; when the luffing trolley is retracted close to the root of the boom and the distance between the first transmitting coil 1 and the first receiving coil 2 reaches a first preset distance range (for example, 15-30 mm), the first transmitting coil 1 and the first receiving coil 2 are automatically turned on, that is, the tower crane can charge the luffing trolley through the first transmitting coil 1 and the first receiving coil 2.

[0044] Moreover, the charging efficiency is better as determined by the effective relative area of ​​the transmitting coil and the receiving coil. Therefore, in another embodiment of the present invention, when the luffing trolley is retracted to the root of the boom, the centers of the first transmitting coil 1 and the first receiving coil 2 are aligned and the planes where the two are located are parallel; and when the hook is retracted to the luffing trolley, the centers of the second transmitting coil 3 and the second receiving coil 4 are aligned and the planes where the two are located are parallel, as shown in FIG. Figure 2 shown.

[0045] In another embodiment of the present invention, the inventors have also designed specific installation details of the coils in combination with the actual operating conditions of the tower crane and its own mechanical design. Figure 2 As shown, first, in combination with the design of the tower crane's own structure, the first transmitting coil 1 is installed at the root of the boom, and the first receiving coil 2 is installed on the side of the luffing trolley near the front root of the boom, and the planes where the two are located are parallel to the side of the luffing trolley (that is, perpendicular to the horizontal plane). Here, please note that the centers of the first transmitting coil 1 and the first receiving coil 2 are perpendicular to Figure 2The direction of the plane shown deviates from the guide rail of the luffing trolley, so the design of the first limit baffle (not shown) mentioned below does not affect the electromagnetic transmission between the first transmitting coil 1 and the first receiving coil 2. Then, combined with the actual operating conditions of the tower crane (the hook is always in a swinging state) and its own mechanism design, the second transmitting coil 3 is installed on the side of the luffing trolley close to the hook, and the second receiving coil 4 is installed on the side of the pulley of the hook close to the second transmitting coil 3, and the planes where the two are located are perpendicular to the horizontal plane. If the plane where the second transmitting coil 3 and the second receiving coil 4 are located is set to be parallel to the horizontal plane, the second transmitting coil 3 and the second receiving coil 4 are very easy to collide with obstacles and be damaged during the swing of the hook. Therefore, the design of the plane where the second transmitting coil 3 and the second receiving coil 4 are located perpendicular to the horizontal plane in this embodiment can avoid damage due to collision with obstacles during the swing of the hook, thereby realizing safe charging between the luffing trolley and the hook assembly.

[0046] In addition, in order to avoid shaking or small floating between the tower crane and the luffing trolley and / or between the luffing trolley and the hook, in this embodiment, a corresponding first magnetic device can be provided to achieve mutual adsorption between the tower crane and the luffing trolley (the trolley is generally made of iron material), and / or a second magnetic device can be provided to achieve mutual adsorption between the luffing trolley and the hook (the hook is also generally made of iron material), thereby achieving the stability of the secondary wireless charging of the tower crane.

[0047] Specifically, a first limit baffle (not shown) is designed at the root of the boom, and the center of the first limit baffle is on the guide rail of the luffing trolley. A first magnetic device (not shown, such as a magnet) is installed on the first limit baffle, or the first limit baffle is a magnetic limit baffle (for example, a magnetic iron baffle), which is used to adsorb the luffing trolley when the luffing trolley is retracted to the root of the boom. In addition, a second limit baffle (not shown) may be installed on the lower side of the luffing trolley or the upper side of the pulley block of the hook, and a second magnetic device (not shown, such as a magnet) is installed on the second limit baffle, or the second limit baffle is a magnetic limit baffle, which is used to adsorb the hook and the luffing trolley together when the hook is retracted to the luffing trolley. In a preferred embodiment, in order to avoid the instability of the hook when being adsorbed due to its swingability and the defect of having more components on the hook, the second limit baffle (not shown) can be set on the lower side of the luffing trolley.

[0048] In order to realize that the first power storage device 20 on the luffing trolley charges the second power storage device 40 on the hook, it is necessary to appropriately select the first power storage device 20 (for example, Figure 3 The capacity of the lithium battery 25 in the tower crane is ensured to ensure that the first power storage device 20 has enough power to supply the second power storage device 40 (for example, Figure 3 Furthermore, considering that when the remaining power of the first power storage device 20 is small, the output voltage and output power of the first power storage device 20 are low, thereby reducing the charging efficiency of the second power storage device 40, in this embodiment, the capacity of the first power storage device 20 is set to be at least twice the capacity of the second power storage device 40. Of course, if the charging efficiency is not considered, it is sufficient to set the capacity of the first power storage device 20 to be greater than the capacity of the second power storage device 40.

[0049] Combine the following Figure 2 The charging and power supply process of the power supply system used for the tower crane monitoring system is explained and illustrated.

[0050] When the tower crane is not working, the hook is retracted to the part close to the luffing trolley and the luffing trolley is closely attached to the limit baffle on the upper side of the hook due to the magnetic adsorption effect of the hook side. At this time, the distance between the second transmitting coil 3 and the second receiving coil 4 reaches the second preset distance range (for example, 15-30 mm), and the second transmitting coil 3 and the second receiving coil 4 are automatically connected, that is, the luffing trolley can charge the second power storage device 40 on the hook through the second transmitting coil 3 and the second receiving coil 4; similarly, the luffing trolley is retracted to the root of the boom and the luffing trolley is closely attached to the limit baffle on the root side of the boom due to the magnetic adsorption effect of the boom side. At this time, the distance between the first transmitting coil 1 and the first receiving coil 2 reaches the first preset distance range (for example, 15-30 mm), and the first transmitting coil 1 and the first receiving coil 2 are automatically connected, that is, the tower crane can charge the first power storage device 20 on the luffing trolley through the first transmitting coil 1 and the first receiving coil 2. At this time, the power supply system is in a charging state.

[0051] When the tower crane is working, the hook is away from the luffing trolley. Once the distance between the second transmitting coil 3 and the second receiving coil 4 is greater than the maximum value of the second preset distance range (for example, 15-30 mm), the second transmitting coil 3 and the second receiving coil 4 are no longer conductive. At this time, the second power storage device 40 on the hook can be used to power various sensors and other power modules on it. Similarly, the luffing trolley is away from the root of the boom. Once the distance between the first transmitting coil 1 and the first receiving coil 2 is greater than the maximum value of the first preset distance range (for example, 15-30 mm), the first transmitting coil 1 and the first receiving coil 2 are no longer conductive. At this time, the first power storage device 20 on the luffing trolley can be used to power various sensors and power modules on it. At this time, the power supply system is in a power supply state (or working state).

[0052] In summary, the present invention creatively realizes wireless power supply between the tower crane and the luffing trolley assembly through a first wireless charging device, and realizes wireless power supply between the luffing trolley and the hook assembly through a second wireless charging device, thereby solving the problem that the hook and the root of the boom have no relative fixed position, resulting in the inability to realize wireless charging of the hook assembly, and realizes non-contact wireless power supply between the tower crane and the luffing trolley assembly and between the luffing trolley and the hook assembly.

[0053] The embodiment of the present invention further provides a tower crane monitoring system, wherein the tower crane comprises: a cab, a lifting arm, a luffing trolley and a hook. The tower crane monitoring system may comprise: the power supply system for the tower crane monitoring system.

[0054] The tower crane monitoring system may further include: a control device (not shown) installed in the cab, a first sensor (for example, Figure 3 The camera 5 in the hook), a second sensor mounted on the hook (for example, Figure 3 Cameras 6, 7) and wireless transmission devices.

[0055] In order to achieve better communication effect of the data transmission link between the tower crane (e.g., the control device) and the luffing trolley (e.g., the first sensor) and between the luffing trolley (e.g., the first sensor) and the hook (e.g., the second sensor), in this embodiment, a wireless bridge group can be set between the tower crane and the luffing trolley, and a wireless bridge group can be set between the luffing trolley and the hook.

[0056] Specifically, the wireless transmission device may include: a first wireless transmission module 100 installed at the root of the boom and connected to the control device (not shown) by wire or wireless means, and a first wireless transmission module 100 installed on the luffing trolley and connected to the first sensor (for example, Figure 3 A second wireless transmission module 110 connected to the camera 5 in the embodiment of the present invention is used for wirelessly transmitting data between the control device (not shown) and the first sensor; and a third wireless transmission module 120 installed on the luffing trolley and connected to the second wireless transmission module 110 and a fourth wireless transmission module 130 installed on the hook are used for indirectly wirelessly transmitting data between the control device (not shown) and the second sensor (for example, Figure 3 The data between cameras 6 and 7) in Figure 4 shown.

[0057] The first wireless transmission module 100, the second wireless transmission module 110, the third wireless transmission module 120, and the fourth wireless transmission module 130 can be wireless bridge 11, wireless bridge 12, wireless bridge 13, and wireless bridge 14, respectively. Figure 3 As shown. Figure 3 The cameras 6 and 7 can be connected to the wireless bridge 14 via the switch 9 , that is, the acquired image data are gathered together via the switch 9 and transmitted via the wireless bridge 14 .

[0058] It has been found through research that the larger the effective relative area between two wireless transmission modules (for example, wireless bridges), the better the corresponding data transmission efficiency. Therefore, in a preferred embodiment, the first wireless transmission module 100 and the second wireless transmission module 110 are arranged face to face; and the third wireless transmission module 120 and the fourth wireless transmission module 130 are arranged face to face. For example, the transmitting surfaces of the wireless bridge 11 and the wireless bridge 12 (or the wireless bridge 13 and the wireless bridge 14) are arranged relative to each other. In a more preferred embodiment, the first wireless transmission module 100 and the second wireless transmission module 110 are arranged face to face and the centers of the two are aligned; and the third wireless transmission module 120 and the fourth wireless transmission module 130 are arranged face to face and the centers of the two are aligned. For example, the transmitting surfaces of the wireless bridge 11 and the wireless bridge 12 (or the wireless bridge 13 and the wireless bridge 14) are arranged relative to each other and the transmitting centers of the two are aligned. Figure 3 shown.

[0059] In each of the above embodiments, the two wireless bridges 12 and 13 on the luffing trolley are directly connected via a network cable, thereby achieving the best communication effect of the entire data transmission link between the hook, the luffing trolley and the tower crane. In addition, the above wireless signal transmission scheme can ensure that the sensor signal can be effectively transmitted back when the hook is in any position.

[0060] The following explains and illustrates the wireless transmission process of monitoring data by taking the operating posture of the monitoring hook as an example.

[0061] First, the hook image data (which may include the image data of the on-site environment where the hook is located) collected by the camera 5 on the luffing trolley is wirelessly transmitted to the control device through the wireless bridge 12 and the wireless bridge 11; at the same time, the hook image data collected by the cameras 6 and 7 on the hook can also be wirelessly transmitted to the luffing trolley side through the wireless bridge 14 and the wireless bridge 13, and then the hook image data can be wirelessly transmitted to the control device through the wireless bridge 12 and the wireless bridge 11 directly connected to the wireless bridge 13; then, after the control device analyzes and processes the collected hook image data, it can send corresponding luffing instructions to the corresponding actuators (such as luffing mechanism, slewing mechanism, lifting mechanism, etc.) to control the luffing trolley and hook movements. In this way, the sensor signal can be transmitted back to the control device by wireless transmission when the hook is in any position (especially between the gap formed by two buildings), and further achieves precise control of the lifting process.

[0062] After knowing that the height and swing angle of the hook have changed by analyzing the image data, in order to collect a clear image of the hook posture, the control device can send a first instruction to adjust the focal length of the camera 5 and a second instruction to adjust the shooting angle of the cameras 6 and 7 to the side of the variable-length trolley through the wireless bridge 11 and the wireless network cable 12, so as to adjust the focal length of the camera 5 according to the first instruction; and then the second instruction can be wirelessly transmitted to the cameras 6 and 7 on the hook side through the wireless bridge 13 and the wireless bridge 14 directly connected to the wireless bridge 12, so as to adjust their respective shooting angles according to the second instruction.

[0063] In summary, the present invention creatively sets two wireless bridges on the luffing trolley that are directly connected by network cables, thereby achieving the best communication effect of the entire data transmission link between the hook, the luffing trolley and the tower crane. In addition, the above wireless signal transmission scheme can ensure that the sensor signal can be effectively transmitted back when the hook is in any position.

[0064] An embodiment of the present invention further provides a tower crane, and the tower crane includes the tower crane monitoring system.

[0065] For specific details and benefits of the tower crane provided by the embodiment of the present invention, reference may be made to the above description of the power supply system for the tower crane monitoring system and the tower crane monitoring system, which will not be repeated here.

[0066] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0067] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0068] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A power supply system for a tower crane monitoring system, wherein the tower crane comprises a cab, a boom, a luffing trolley and a hook, characterized in that: The power supply system comprises: a first wireless charging device, the first wireless charging device comprising: a first power supply module installed at the root of the boom and connected to the power supply in the cab, and a first charging module installed on the luffing trolley, for supplying power to the first charging module through the first power supply module; a first power storage device, which is installed on the luffing trolley and is used to store the power obtained by the first charging module and to supply power to the first sensor on the luffing trolley; a second wireless charging device, the second wireless charging device comprising a second power supply module installed on the luffing trolley and connected to the first power storage device, and a second charging module installed on the hook, for the second power supply module to supply power to the second charging module; and A second power storage device is installed on the hook and connected to the second charging module, and is used to store the electricity obtained by the second charging module and to power the second sensor on the hook.

2. The power supply system for tower crane monitoring system according to claim 1, characterized in that: The first wireless charging device and the second wireless charging device are devices that use electromagnetic induction to perform charging.

3. The power supply system for tower crane monitoring system according to claim 2, characterized in that: The first power supply module and the second power supply module are respectively a first transmitting coil and a second transmitting coil; and the first charging module and the second charging module are respectively a first receiving coil and a second receiving coil.

4. The power supply system for tower crane monitoring system according to claim 3, characterized in that: When the luffing trolley is fully retracted to the root of the boom, the distance between the first transmitting coil and the first receiving coil is within a first preset distance range; and when the hook is retracted to the luffing trolley, the distance between the second transmitting coil and the second receiving coil is within a second preset distance range.

5. The power supply system for tower crane monitoring system according to claim 4, characterized in that: When the luffing trolley is retracted to the root of the boom, the centers of the first transmitting coil and the first receiving coil are aligned and the planes where the two are located are parallel; and when the hook is retracted to the luffing trolley, the centers of the second transmitting coil and the second receiving coil are aligned and the planes where the two are located are parallel.

6. The power supply system for tower crane monitoring system according to claim 5, characterized in that: A plane where the first transmitting coil, the first receiving coil, the second transmitting coil and the second receiving coil are located is perpendicular to a horizontal plane.

7. The power supply system for tower crane monitoring system according to claim 4, characterized in that: A first limit baffle at the root of the boom is installed with a first magnetic device or the first limit baffle is a magnetic limit baffle, which is used to adsorb the luffing trolley when the luffing trolley is retracted to the root of the boom; and / or A second limit baffle is installed on the lower side of the boom trolley or the upper side of the pulley group of the hook, and a second magnetic device is installed on the second limit baffle or the second limit baffle is a magnetic limit baffle, which is used to adsorb the hook and the boom trolley together when the hook is retracted to the boom trolley.

8. The power supply system for a tower crane monitoring system according to claim 1, characterized in that: The capacity of the first power storage device is at least twice the capacity of the second power storage device.

9. A tower crane monitoring system, the tower crane comprising: A cab, a lifting arm, a luffing trolley and a hook, characterized in that the tower crane monitoring system comprises: a power supply system for a tower crane monitoring system according to any one of claims 1-8.

10. The tower crane monitoring system according to claim 9, characterized in that: The tower crane monitoring system further includes: a control device installed in the cab, a first sensor installed on the luffing trolley, a second sensor installed on the hook, and a wireless transmission device. The wireless transmission device includes: a first wireless transmission module installed at the root of the boom and connected to the control device by wired or wireless means, and a second wireless transmission module installed on the boom trolley and connected to the first sensor, for wirelessly transmitting data between the control device and the first sensor; and a third wireless transmission module installed on the boom trolley and connected to the second wireless transmission module, and a fourth wireless transmission module installed on the hook, for indirectly wirelessly transmitting data between the control device and the second sensor through the first wireless transmission module and the second wireless transmission module.

11. The tower crane monitoring system according to claim 10, characterized in that: The first wireless transmission module and the second wireless transmission module are arranged face to face; and the third wireless transmission module and the fourth wireless transmission module are arranged face to face.

12. A tower crane, characterized in that: The tower crane comprises the tower crane monitoring system according to any one of claims 9-11.

Images