An automatic protection device to prevent lifting equipment from tilting or slanting

Abstract

The present invention provides an automatic protection device for preventing lifting equipment from tilting or slanting. The device comprises a load-bearing member for carrying a lifted object; a power unit for controlling the rise or fall of the load-bearing member; a radar component disposed at the bottom of the power unit, the radar component having a detection area that is a conical area with the radar component as the top and the ground as the bottom; the radar component for sensing the distance between the load-bearing member and the bottom of the power unit, and generating a power-off command signal when the distance between the load-bearing member and the bottom of the power unit is less than a first threshold or greater than a second threshold; and a power-off command signal when sensing that the load-bearing member exceeds the detection area of ​​the radar component; and a power-off execution unit electrically connected to the power unit and the radar component, and for powering off the power unit upon receiving the power-off command signal from the radar component.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to an automatic protection device for preventing lifting equipment from tilting or slanting. Background Art

[0002] Lifting equipment is widely used in engineering construction. In this field, lifting equipment is used to lift and move heavy objects, significantly reducing the difficulty of construction and improving its efficiency. In related technologies, lifting equipment typically includes a power unit and a load-bearing member. The power unit is positioned directly above the load-bearing member and connected to the load-bearing member via a rope. When the load-bearing member is loaded, the power unit applies force to the load-bearing member via the rope, causing the load-bearing member to rise, thereby driving the load upward.

[0003] However, when the lifting equipment is used to transport heavy objects, if the operator does not operate it properly, a certain angle may appear between the line connecting the load-bearing member and the power unit and the vertical direction, that is, the load-bearing member may be tilted or slanted. The tilted or slanted position may easily damage the power unit and may even cause a safety accident, which is not conducive to the personal safety of the operator. At the same time, when the lifting equipment is used to transport heavy objects, if the operator does not operate it properly, the load-bearing member may even rise to the bottom of the power unit, but the power unit may still apply force to the load-bearing member, causing the load-bearing member to continue to rise to squeeze the power unit, thereby causing a safety accident. Also, when the lifting equipment is used to lower the height of the load-bearing member, if the load-bearing member is lowered to the ground, the power unit continues to lower the height of the load-bearing member, which will leave certain safety hazards in the subsequent use of the lifting equipment. Summary of the Invention

[0004] The present invention provides an automatic protection device for preventing lifting equipment from tilting or slanting, which can avoid the phenomenon of tilting or slanting of the lifting equipment, avoid the situation where the height of the heavy object is still increased when the lifting equipment lifts the heavy object to a position close to the bottom of the lifting equipment, and avoid the situation where the height of the heavy object is still decreased when the lifting equipment lowers the heavy object to a position close to the ground.

[0005] The present invention provides an automatic protection device for preventing a lifting device from tilting or slanting, comprising:

[0006] A load-bearing member, used to carry the object being lifted;

[0007] A power unit, the power unit being used to control the lifting or lowering of the carrier;

[0008] a radar component disposed at the bottom of the power unit, wherein the detection area of ​​the radar component is a conical area with the radar component as the top and the ground as the bottom; the radar component is configured to sense the distance between the carrier and the bottom of the power unit, and generate a power-off command signal when the distance between the carrier and the bottom of the power unit is less than a first threshold or greater than a second threshold; and is further configured to generate a power-off command signal when it is sensed that the carrier exceeds the detection area of ​​the radar component;

[0009] A power-off execution unit is electrically connected to the power unit and the radar component, and is used to perform a power-off operation on the power unit after receiving a power-off command signal from the radar component.

[0010] Optionally, the radar component is a laser radar component, including:

[0011] The laser emission unit includes a laser, a beam controller, and an emission optical system. The beam controller adjusts the coverage of the laser signal emitted by the laser to form a conical detection area for the radar component. The emission optical system is used to make the laser signal more concentrated and improve the accuracy of the laser signal.

[0012] a laser receiving unit, configured to receive the laser signal reflected by the carrier and convert the laser signal into an electrical signal;

[0013] an information processing unit, configured to determine a distance between the carrier and the bottom of the power unit according to an electrical signal from the laser receiving unit;

[0014] The control unit is used to control the laser emitting unit, the laser receiving unit and the information processing unit, and is also used to determine whether the carrier is within the detection range of the radar component and to generate a power-off command signal.

[0015] Optionally, the beam controller is a TH-252-IYA beam shaper.

[0016] Optionally, the emission optical system includes an M12 lens and a polarizer, the M12 lens is used to adjust the coverage range of the laser signal, and the polarizer is used to adjust the direction of the laser signal.

[0017] Optionally, the information processing unit includes an amplifier and an information processor, the amplifier is used to amplify the electrical signal of the laser receiving unit, and the information processor is used to calculate the distance between the carrier and the radar component based on the amplified electrical signal.

[0018] Optionally, the power-off execution unit includes a fire-off limiter.

[0019] Optionally, a reflective element is provided on the top of the carrier for reflecting laser light.

[0020] Optionally, the laser receiving unit includes a photodetector and a receiving optical system, wherein the receiving optical system is used to focus the laser signal on the photodetector, and the photodetector is used to convert the laser signal into an electrical signal.

[0021] Optionally, the photodetector is a photodiode, the receiving optical system includes an optical lens, and the diameter of the optical lens is 10 to 50 mm.

[0022] Optionally, the receiving optical system further includes an interference filter.

[0023] The beneficial effects brought about by the technical solution provided by the present invention are:

[0024] In the disclosed embodiment, a radar component is provided in the lifting equipment. The radar component is provided at the bottom of the power unit. The radar component can form a conical detection area with the radar component as the top and the ground as the ground. By detecting whether the bearing member is located within the detection area through the conical detection area, it can be determined whether there is a skew between the bearing member and the power unit. Moreover, the conical detection area can detect skew at any position, that is, whether the bearing member is at the lower left, upper left, lower right or upper right of the power unit, as long as the bearing member is skewed, the radar component can detect it. When the radar component detects the skew, it can automatically send a power-off command signal to the power-off execution unit, and the power-off execution unit will perform a power-off operation on the power unit to avoid safety hazards. At the same time, by adjusting the taper of the conical detection area, the user can set the judgment conditions for skew by himself, which is more convenient to use. The radar component can also be used to detect the distance between the carrier and the power unit. The radar component releases a signal to obtain the signal reflected by the carrier. The distance between the radar component and the carrier can be calculated based on the time difference between the transmitted signal and the reflected signal. The radar component is set at the bottom of the power unit, so that the distance between the heavy object and the bottom of the power unit can be calculated. When the distance between the carrier and the bottom of the power unit is less than the first threshold or greater than the second threshold, that is, when the heavy object is close to the power unit or the heavy object is close to the ground, the power-off command signal is released to power off the power unit. In summary, under the action of the radar component and the power-off execution unit, the safety of the lifting equipment in the process of carrying heavy objects can be greatly improved, and the radar component and the power-off execution unit do not require human operation, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of an automatic protection device for preventing a lifting device from tilting or slanting provided by an embodiment of the present disclosure;

[0027] Figure 2 A structural block diagram of a radar component provided in an embodiment of the present disclosure;

[0028] Figure 3 A schematic structural diagram of another laser radar component provided in an embodiment of the present disclosure;

[0029] Figure 4 A wiring diagram of a lifting device provided in an embodiment of the present disclosure;

[0030] Figure 5 This is a wiring diagram inside a misfire limiter provided in an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 10: Carrying part; 11: Power unit; 12: Radar component; 13: Power-off execution unit; 14: Rope; 15: Reflector.

[0033] 20: control unit;

[0034] 30: Laser emission unit; 31: Excitation source; 32: Laser; 33: Laser modulator; 34: Beam controller; 35: Emission optical system;

[0035] 40: laser receiving unit; 41: receiving optical system; 42: photoelectric detector;

[0036] 50: information processing unit; 51: amplifier; 52: information processor.

[0037] 60: Knife switch; 61: Main contactor; 62: First contactor; 63: Second contactor; 64: Third contactor; 65: Fourth contactor; 66: Transformer; 67: Terminal block; 68: Lifting motor; 69: Travel motor; 70: Operating handle. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] Figure 1 This is a schematic diagram of the structure of an automatic protection device for preventing a lifting device from tilting or slanting, provided by an embodiment of the present disclosure. Figure 1 , the device comprises:

[0040] The load-bearing member 10 is used to carry the object to be lifted;

[0041] A power unit 11, which is used to control the lifting or lowering of the carrier;

[0042] A radar component 12 is disposed at the bottom of the power unit. The detection area of ​​the radar component is a conical area with the radar component as the top and the ground as the bottom. The radar component is used to sense the distance between the carrier and the bottom of the power unit and generate a power-off command signal when the distance between the carrier and the bottom of the power unit is less than a first threshold or greater than a second threshold. The radar component is also used to generate a power-off command signal when it is sensed that the carrier exceeds the detection area of ​​the radar component.

[0043] A power-off execution unit 13 is electrically connected to the power unit and the radar component, and is used to perform a power-off operation on the power unit after receiving a power-off instruction signal from the radar component.

[0044] In the disclosed embodiment, the power unit 11 is a lifting device, and a radar component is provided in the lifting device. The radar component is disposed at the bottom of the power unit. The radar component can form a conical detection area with the radar component as the top and the ground as the ground. By detecting whether the load-bearing member is within the detection area through the conical detection area, it can be determined whether there is any skewing or tilting between the load-bearing member and the power unit. Moreover, the conical detection area can detect skewing or tilting at any position, that is, whether the load-bearing member is at the lower left, upper left, lower right, or upper right of the power unit, as long as the load-bearing member is skewing or tilting, the radar component can detect it. When the radar component detects skewing or tilting, it can automatically send a power-off command signal to the power-off execution unit, which will then power off the power unit, thereby avoiding safety hazards. At the same time, by adjusting the taper of the conical detection area, the user can set the judgment conditions for skewing or tilting, which is more convenient to use. The radar component can also be used to detect the distance between the carrier and the power unit. The radar component releases a signal to obtain the signal reflected by the carrier. The distance between the radar component and the carrier can be calculated based on the time difference between the transmitted signal and the reflected signal. The radar component is set at the bottom of the power unit, so that the distance between the heavy object and the bottom of the power unit can be calculated. When the distance between the carrier and the bottom of the power unit is less than the first threshold or greater than the second threshold, that is, when the heavy object is close to the ground or the heavy object is close to the power unit, the power-off command signal is released to power off the power unit. In summary, under the action of the radar component and the power-off execution unit, the safety of the lifting equipment in the process of carrying heavy objects can be greatly improved, and the radar component and the power-off execution unit do not require human operation, and the degree of automation is high.

[0045] In the embodiment of the present disclosure, the taper of the conical detection area may be 20 degrees.

[0046] It is worth noting that the taper of the conical detection area can be set as needed, and the present invention does not impose any limitation on this.

[0047] In the embodiment of the present disclosure, the carrier 10 may be a hook.

[0048] In other embodiments, the carrier 10 may be any other form of carrier, which is not limited in the present disclosure.

[0049] In the embodiment of the present disclosure, the power unit 11 may be an electric hoist.

[0050] Figure 2 This is a structural block diagram of a radar component provided by an embodiment of the present disclosure. Figure 2 , the radar component 12 is a laser radar component, including:

[0051] The laser emitting unit 30 includes a laser, a beam controller, and an emitting optical system. The beam controller adjusts the coverage of the laser signal emitted by the laser to form a conical detection area for the radar component. The emitting optical system is used to make the laser signal more concentrated and improve the accuracy of the laser signal.

[0052] a laser receiving unit 40 for receiving the laser signal reflected by the carrier and converting the laser signal into an electrical signal;

[0053] an information processing unit 50 for determining the distance between the carrier and the bottom of the power unit according to the electrical signal of the laser receiving unit;

[0054] The control unit 20 is used to control the laser emitting unit 30, the laser receiving unit 40 and the information processing unit 50, and is also used to determine whether the carrier 10 is within the detection range of the radar component 12, and to generate a power-off command signal.

[0055] In an embodiment of the present disclosure, a laser radar component is provided, and a transmitting optical system is provided in the laser radar component. The transmitting optical system can control the coverage range of the laser, thereby generating a conical detection area. The laser radar component is also provided with a laser receiving unit. The laser receiving unit receives the reflected laser signal to determine whether the carrier is located within the detection area of ​​the laser radar component. When the carrier is located within the detection area of ​​the laser radar component, the control unit obtains the electrical signal generated by the laser receiving unit based on the laser signal reflected from the carrier, and transmits the electrical signal to the information processing unit. The information processing unit can determine the distance between the carrier and the bottom of the power unit based on the electrical signal.

[0056] In the embodiment of the present disclosure, the control unit may be an STM32F303CBT6 microcontroller, which can realize the sending and receiving of laser signals, the reading and calibration of measurement data, and the communication with the host computer.

[0057] Figure 3 This is a structural diagram of another laser radar component provided by an embodiment of the present disclosure. Figure 2 and Figure 3 The laser reflecting unit 30 includes an excitation source 31 , a laser 32 , a laser modulator 33 , a beam controller 34 and a transmitting optical system 35 .

[0058] In the disclosed embodiment, an excitation source generates a laser signal, while a laser modulator regulates the laser's phase. This allows the object to be scanned using different phases and light speeds at different angles, eliminating the need for physical optical rotational scanning and facilitating easier operation. A beam controller controls the width of the laser waveform. After regulating the laser waveform's phase and width, the laser signal is emitted toward the carrier.

[0059] In the embodiment of the present disclosure, the beam controller may be a TH-252-IYA type beam shaper.

[0060] In the embodiment of the present disclosure, the coverage area of ​​the laser signal can be converted into a conical area with a taper of 20 degrees by using the TH-252-IYA beam shaper.

[0061] In an embodiment of the present disclosure, the transmitting optical system includes an M12 lens and a polarizer. The M12 lens is used to adjust the coverage range of the laser signal, and the polarizer is used to adjust the direction of the laser signal.

[0062] In the disclosed embodiment, the M12 lens can control the laser signal to generate a conical detection area, and the polarizer can control the direction of the laser signal.

[0063] In the embodiment of the present disclosure, the laser receiving unit 40 includes a receiving optical system 41 and a photodetector 42 . The receiving optical system 41 is used to focus the laser signal on the photodetector 42 , and the photodetector 42 is used to convert the laser signal into an electrical signal.

[0064] In the embodiment of the present disclosure, the reflected laser signal is focused onto a photodetector through a receiving optical system, and the photodetector converts the laser signal into an electrical signal, which will facilitate the subsequent calculation of the distance between the carrier and the power unit.

[0065] In the embodiment of the present disclosure, the receiving optical system 41 includes an optical lens, the diameter of the optical lens is 10 to 50 mm, and the photodetector 42 is a photodiode.

[0066] Exemplarily, the diameter of the optical lens is 25 mm.

[0067] In the disclosed embodiment, the photodiode can convert the laser signal into an electrical signal. The optical lens of the above diameter has a larger aperture, which allows the reflected laser signal to be more focused on the photodiode, thereby obtaining a higher signal-to-noise ratio.

[0068] In the embodiment of the present disclosure, the receiving optical system 41 further includes an interference filter, the design wavelength of the interference filter is consistent with the wavelength of the laser signal. For example, if the wavelength of the laser is 905 nm, the wavelength of light allowed to pass through the interference filter may be 905 nm.

[0069] In the embodiment of the present disclosure, an interference filter can be set in a strong lighting environment. The interference filter can remove light other than the laser signal to facilitate the radar component to detect the distance between the carrier and the radar component, and to determine whether the carrier is within the detection range.

[0070] In the embodiment of the present disclosure, after the laser emitting unit emits a laser signal to the carrier, if the carrier is within the coverage range of the laser signal, the carrier will reflect the laser signal. The laser receiving unit receives the reflected laser signal through the receiving optical system and focuses the laser signal onto the photodetector, thereby generating an electrical signal. The control unit obtains the electrical signal generated by the laser receiving unit and transmits the electrical signal to the information processing unit.

[0071] In the embodiment of the present disclosure, the information processing unit 50 includes an amplifier 51 and an information processor 52. The amplifier 51 is used to amplify the electrical signal of the laser receiving unit 40, and the information processor 52 is used to calculate the distance between the carrier 10 and the radar component 12 based on the amplified electrical signal.

[0072] In the embodiment of the present disclosure, after the electrical signal is amplified by an amplifier, the distance between the carrier and the radar component is calculated by an information processor, which can improve the calculation accuracy.

[0073] In the embodiment of the present disclosure, the information processor 52 includes a TDC-GP21 chip.

[0074] In the disclosed embodiment, the time resolution of the TDC-GP21 chip is about 90 ps, ​​and the calculation accuracy is relatively high, which is beneficial to improving the distance measurement accuracy of the radar component.

[0075] In the embodiment of the present disclosure, after receiving the electrical signal, the information processing unit amplifies the electrical signal through the amplifier, and then calculates the distance between the carrier and the radar component based on the amplified electrical signal through the information processor.

[0076] In the embodiment of the present disclosure, a laser signal is sent to the carrier 10 by the laser emitting unit 30. If the carrier 10 is located in the detection area of ​​the laser signal, the carrier 10 will reflect the laser signal. By determining whether the laser receiving unit 40 receives the reflected laser signal, it can be determined whether the carrier 10 is located in the conical detection area, thereby judging whether the carrier 10 is crooked or tilted.

[0077] See again Figure 1 In the embodiment of the present disclosure, the power-off execution unit 13 may be a fire-off limiter.

[0078] In the disclosed embodiment, the power unit can be powered off by means of a fire stop limiter.

[0079] In the embodiment of the present disclosure, a rope 14 is provided between the carrier 10 and the power unit 11 .

[0080] In the embodiment of the present disclosure, a reflective member 15 is provided on the top of the carrier 10 , and the reflective member 15 may be a reflective mirror.

[0081] In the embodiment of the present disclosure, a reflective member is provided on the top of the carrier. The reflective member can enhance the reflected laser signal, making it easier for the radar component to judge the distance between the carrier and the radar component.

[0082] In the embodiment of the present disclosure, the scanning speed of the radar component 12 is 15 times per second. The scanning speed refers to the time required for the laser radar to complete a scan. The shorter this time is, the faster the scanning speed is. The laser radar can perceive the surrounding environment more quickly, thereby providing more real-time environmental data.

[0083] In the disclosed embodiment, the resolution of the radar component 12 is 1% of the detection distance, but not better than ±2 cm.

[0084] In the embodiment of the present disclosure, the minimum detection distance of the radar component 12 is 5 cm, and the maximum detection distance is approximately 225 meters (white reflective plane).

[0085] In the disclosed embodiment, the angular resolution of the radar component 12 is 0.5 degrees. Angular resolution is a technical indicator that indicates the pointing accuracy of the radar. Angular resolution can be understood as the angular step between two adjacent ranging points, or the angle between two adjacent points. A higher angular resolution means a more accurate pointing capability of the radar, thereby enabling finer resolution at a specific distance. For example, when the radar's pointing accuracy reaches 0.01 radians (approximately 0.6 degrees in angle), it can achieve a resolution of 1 meter at a distance of 100 meters.

[0086] In the disclosed embodiment, the radar component 12 has a scanning frequency of approximately 11 kHz. Scanning frequency refers to the frequency at which a laser beam scans from one direction to another, typically expressed in Hertz (Hz), or the number of scans per second. A higher scanning frequency allows the lidar to scan the surrounding environment more quickly, providing faster updates and more accurate perception.

[0087] In the embodiment of the present disclosure, the scanning angle range of the laser emitted by the laser in the radar component 12 is 230 degrees. After passing through the beam controller and the transmitting optical system, the laser becomes a laser with a taper of 20 degrees.

[0088] In the embodiment of the present disclosure, the operating voltage of the radar component 12 is 5V, and the operating current is 1A. When just started, the operating voltage may exceed 8A.

[0089] In the embodiment of the present disclosure, the radar component 12 has a size of 50 mm×50 mm×120 mm.

[0090] Figure 4 This is a wiring diagram of an automatic protection device for preventing tilting or slanting of lifting equipment provided by an embodiment of the present disclosure. Figure 4 , wherein the power unit is an electric hoist, and the power-off execution unit 13 is a fire-off limiter.

[0091] In the disclosed embodiment, the power unit includes a knife switch 60, a main contactor 61, a first contactor 62, a second contactor 63, a third contactor 64, a fourth contactor 65, a transformer 66, a terminal block 67, a lift motor 68, a travel motor 69, and an operating handle 70. The first and second contactors are electrically connected to interfaces 1 to 7 in the flameout limiter.

[0092] Figure 5 This is a wiring diagram of a fire limiter provided in an embodiment of the present disclosure. Figure 5 The fire limiter includes 7 interfaces. Figure 4 and Figure 5 They are marked with numbers 1 to 7 respectively.

[0093] In the disclosed embodiment, the control principle of the fire limiter is as follows: when the distance between the carrier and the power unit is less than a first threshold, the radar component's control unit sends a power-off command signal to interface 1 and interface 6, causing the switch of first contactor 62 to open, thereby powering off the lift motor M1. When the distance between the carrier and the power unit is greater than a second threshold, the radar component's control unit sends a power-off command signal to interface 2 and interface 7, causing the first contactor 62 to open, thereby powering off the lift motor M1. After the carrier exceeds the detection range, a power-off command signal can be sent to interface 6 and interface 4, and interface 5 and interface 7, causing the second contactor 63 to open, thereby powering off the lift motor M1.

[0094] It is worth noting that the control unit of the radar component can also be used to release a recovery signal. When the radar component senses that the carrier is within the detection range, the control unit of the radar component can send a recovery signal to interface 6 and interface 4, interface 5 and interface 7, and the second contactor 63 will be connected, and the power unit can continue to carry the heavy objects on the carrier.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automatic protection device for preventing lifting equipment from tilting or slanting, characterized in that: include: A bearing member is used to bear the object to be lifted; a reflector is provided on the top of the bearing member to reflect the laser; A power unit, the power unit being used to control the lifting or lowering of the carrier; A radar component is provided at the bottom of the power unit. The detection area of ​​the radar component is a conical area with the radar component as the top and the ground as the bottom. By detecting whether the bearing member is within the detection area through the conical detection area, it can be determined whether there is any slanting between the bearing member and the power unit. The radar component is configured to sense a distance between the carrier and the bottom of the power unit, and generate a power-off command signal when the distance between the carrier and the bottom of the power unit is less than a first threshold or greater than a second threshold; and is further configured to generate a power-off command signal when sensing that the carrier exceeds a detection area of ​​the radar component; The radar component has a scanning speed of 15 times per second; the resolution of the radar component is 1% of the detection distance, and the resolution of the radar component is less than 2 cm; the minimum detection distance of the radar component is 5 cm, and the maximum detection distance is 225 m; the scanning frequency of the radar component is 11 kHz; the scanning angle range of the radar component is 230 degrees; The radar component is a laser radar component, including: The laser emission unit includes a laser, a beam controller, and an emission optical system. The beam controller adjusts the coverage of the laser signal emitted by the laser to form a conical detection area for the radar component. The emission optical system is used to make the laser signal more concentrated and improve the accuracy of the laser signal. a laser receiving unit, configured to receive the laser signal reflected by the carrier and convert the laser signal into an electrical signal; an information processing unit, configured to determine a distance between the carrier and the bottom of the power unit according to an electrical signal from the laser receiving unit; a control unit, configured to control the laser emitting unit, the laser receiving unit, and the information processing unit, and further configured to determine whether the carrier is within the detection range of the radar component, and to generate a power-off command signal; The beam controller is a TH-252-IYA beam shaper; The transmitting optical system includes an M12 lens and a polarizer, wherein the M12 lens is used to adjust the coverage range of the laser signal, and the polarizer is used to adjust the direction of the laser signal; The laser receiving unit includes a photodetector and a receiving optical system, wherein the receiving optical system is used to focus the laser signal on the photodetector, and the photodetector is used to convert the laser signal into an electrical signal; The photodetector is a photodiode, and the receiving optical system includes an optical lens, and the diameter of the optical lens is 10-50 mm; The receiving optical system also includes an interference filter; the coverage range of the laser can be controlled by the transmitting optical system, thereby generating a conical detection area; the laser radar component is also provided with a laser receiving unit, which receives the reflected laser signal through the laser receiving unit to determine whether the carrier is located within the detection area of ​​the laser radar component; A power-off execution unit is electrically connected to the power unit and the radar component, and is used to perform a power-off operation on the power unit after receiving a power-off command signal from the radar component; the power-off execution unit includes a fire limiter.

2. The automatic protection device for preventing the lifting equipment from tilting or slanting according to claim 1 is characterized in that: The information processing unit includes an amplifier and an information processor. The amplifier is used to amplify the electrical signal of the laser receiving unit. The information processor is used to calculate the distance between the carrier and the radar component based on the amplified electrical signal.

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