CN216638731U - Safety distance measuring device of hoisting equipment and hoisting equipment - Google Patents

Abstract

The utility model relates to a safety distance measuring device of lifting equipment and the lifting equipment, wherein the safety distance measuring device of the lifting equipment comprises a base, a driving part, a detecting device and a control part; the base is fixedly arranged at the end part of the suspension arm of the hoisting equipment; the detection device comprises a measuring part, a first trigger piece and a plurality of second trigger pieces, wherein the measuring part can measure the distance between a near object and the end part of the suspension arm, and the driving part can drive the measuring part to rotate around a rotation axis relative to the base; the second trigger pieces are uniformly arranged along the circumferential direction of the rotating axis at intervals, one of the first trigger piece and the second trigger piece is relatively fixed with the base, the other one of the first trigger piece and the second trigger piece is relatively fixed with the measuring part, the first trigger piece can sequentially and independently trigger the second trigger pieces, the triggered second trigger pieces can send trigger signals to the control part, and the control part can acquire distance signals of the measuring part. The safe distance measuring device can measure the distance and the direction of an object close to the end of the lifting equipment, and the operation safety is improved.

Description

Safety distance measuring device of hoisting equipment and hoisting equipment

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a safety distance measuring device of the hoisting equipment and the hoisting equipment.

Background

Safety production is the top of the importance of electric power construction enterprises, a crane is the main equipment for new construction, reconstruction, extension and maintenance construction of a transformer substation, a plurality of devices, wires, steel beams, insulator strings and the like with different diameters are arranged above a crane boom, some devices are electrified and some devices are not electrified, and the distance between the crane boom and an electrified body or a non-electrified body above the crane boom is difficult to measure, so that the crane boom is easily excessively close to the object above, a high-voltage discharge or collision accident occurs to an electric power system, the crane or electric power equipment is damaged, and the safety of human bodies and power supply of a power grid is endangered.

The crane operation mainly depends on the command of a specially-assigned person to ensure the hoisting safety, and the commander is difficult to quantitatively judge the space safety distance of the object adjacent to the end part of the suspension arm and can only estimate and be inaccurate. Communication information between an operator and a commander is limited, the operator has more dimensions and has high misoperation probability caused by human factors, so that the difficulty, the weakness and the blank point of construction safety management are always the accurate distance between the end part of the suspension arm and an adjacent object and the direction of the suspension arm.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safety distance measuring device of lifting equipment and the lifting equipment, which can measure the distance and the direction of an object close to the end part of the lifting equipment and improve the operation safety.

In order to solve the technical problem, the utility model provides a safety distance measuring device of hoisting equipment, which comprises a base, a driving part, a detecting device and a control part, wherein the base is provided with a base seat; the base is fixedly arranged at the end part of the suspension arm of the hoisting equipment; the detection device comprises a measuring part, a first trigger and a plurality of second triggers, the measuring part can measure the distance between a nearby object and the end part of the suspension arm, and the driving part can drive the measuring part to rotate around a rotation axis relative to the base; the second trigger pieces are uniformly arranged along the circumferential direction of the rotating axis at intervals, one of the first trigger piece and the second trigger piece is fixed relative to the base, the other one of the first trigger piece and the second trigger piece is fixed relative to the measuring part, the first trigger piece can sequentially and independently trigger the second trigger pieces along with the rotation of the measuring part, the triggered second trigger pieces can send trigger signals to the control part, and meanwhile the control part can acquire distance signals of the measuring part.

In the lifting operation process, the driving part can drive the measuring part to rotate ceaselessly, the control part can detect the distance information and the position information of the object close to the end part of the suspension arm according to the detection device, and when the distance of the object close to a certain position is not more than the safe distance, the prompting information can be sent out through the display device and the alarm device, so that measures can be taken timely, and potential safety hazards are avoided.

Optionally, the measuring unit includes a microwave radar, a detection range of the microwave radar is not less than a safety distance, a horizontal lobe angle of the microwave radar is α, the number of the second triggering members is not less than 360 °/α, a vertical lobe angle of the microwave radar is β, and β is not less than 90 °.

Optionally, detection device still includes the rotating part, the one end of rotating part is equipped with and is used for installing the mount pad of microwave radar, the trigger part is installed to the other end of rotating part, and works as the microwave radar install in during the mount pad, the antenna face of microwave radar with contained angle between the axis of rotation is 45, just the antenna face orientation is kept away from one side setting of base.

Optionally, the number of the mounting seats is two, and the two mounting seats are arranged symmetrically with respect to the rotation axis.

Optionally, the rotating part includes a barrel, one end of the barrel is provided with an installation plate for installing the trigger, the other end of the barrel is provided with a flange plate, and the flange plate is fixedly provided with the installation seat; the inner wall of mounting panel still is equipped with the mounting hole, the mounting hole is used for the installation trigger.

Optionally, the inner wall of the mounting plate is provided with a mounting protrusion along the circumferential direction, and the mounting hole is formed in the mounting protrusion.

Optionally, the control part further includes a counter, and the counter is configured to cyclically record the number of the second trigger pieces that the first trigger piece passes through and triggers, and when the number recorded by the counter reaches the total number of the second trigger pieces, the counter is cleared and enters the next counting cycle.

Optionally, the measuring device further comprises a battery and a power supply portion, wherein the battery is arranged on the base and used for supplying power to the driving portion and the trigger piece relatively fixed to the base, and the power supply portion is used for supplying power to the trigger piece relatively fixed to the measuring portion and the measuring portion.

Optionally, the power supply portion includes a power supply receiving coil and a power supply transmitting coil, the power supply transmitting coil is fixed relative to the base, and the power supply receiving coil can rotate with the measuring portion relative to the power supply transmitting coil.

Optionally, the base orientation one side of rotating part still is equipped with the power pack, the power pack includes box body and lower box body, down the box body with the base is fixed, it can the lock be fixed in to go up the box body down the box body and with the box body encloses to close down and forms and is used for placing power transmitting coil's cavity down.

Optionally, a magnetic shielding sheet is disposed on one side of the power transmitting coil away from the power receiving coil, and one side of the power receiving coil away from the power transmitting coil.

Optionally, the first trigger is a photoelectric emission tube, and the second trigger is a photoelectric receiving tube.

Optionally, the clamping device further comprises a clamping mechanism, wherein the clamping mechanism comprises a clamping part, a connecting part, an adjusting part and a tray, and the connecting part is connected between the clamping part and the tray; the tray can be fixed with the base; the clamping part is clamped and fixed with an end wing plate of the suspension arm; the regulating part includes regulating part, drive assembly and pivot, the tray with the pivot is fixed, the regulating part can pass through drive assembly adjusts the pivot is rotated, and drives the tray for connecting portion rotate.

The utility model also provides hoisting equipment which comprises the hoisting arm and the safety distance measuring device.

The technical effect of the hoisting equipment with the safety distance measuring device is similar to that of the safety distance measuring device, and is not repeated herein for saving space.

Drawings

FIG. 1 is a schematic structural diagram of a lifting apparatus provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is a schematic structural diagram of a safety distance measuring device according to an embodiment of the present invention;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a cross-sectional view of FIG. 3;

FIG. 6 is a schematic diagram of the relative positions of the microwave radar and the boom tip in an installed state;

FIG. 7 is a top view of a microwave radar detection range;

FIG. 8 is a perspective view of the detection range of a microwave radar;

FIG. 9 is a schematic diagram of the structure of the photoemissive tube at the initial position;

fig. 10 is a schematic structural view of the photo-receiving tube g1 rotated to correspond to the photo-emitting tube m;

fig. 11 is a schematic structural view of the photo-receiving tube g2 rotated to correspond to the photo-emitting tube m;

fig. 12 is a schematic structural view of the photo-reception tube g11 rotated to correspond to the photo-emission tube m;

FIG. 13 is a schematic view of the rotary part with the flange plate removed;

FIG. 14 is an exploded view of the power supply box;

FIG. 15 is an exploded view of the drive and coupling;

fig. 16 is a schematic structural view of the safety ranging apparatus with the clamping mechanism mounted.

In fig. 1-16, the reference numerals are illustrated as follows:

100-a safety ranging device; 200-lifting device, 210-boom, 220-boom tip; 1-a base, 11-an upper seat body, 12-a lower seat body and 13-a containing cavity;

2-drive part, 21-main shaft, 22-drive circuit board;

3-a rotating part, 31-a barrel, 32-a mounting plate, 33-a flange plate, 34-a mounting protrusion and 35-a mounting hole; 4-detection device, 41-microwave radar, 411-antenna surface, 42-mounting seat;

51-first trigger, 52-second trigger, 53-circuit board;

61-battery, 62-power transmitting coil, 63-power receiving coil, 64-switch; 7-power box, 71-upper box, 72-lower box;

8-magnetism isolating sheet;

9-clamping mechanism, 91-clamping part, 92-connecting part, 93-adjusting part;

10-a coupler;

101-set screws.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a safety distance measuring device 100 of a lifting device 200 and the lifting device 200, wherein as shown in fig. 1 and fig. 2, the lifting device 200 comprises a lifting arm 210, the lifting arm end 220 is provided with the safety distance measuring device 100, and the safety distance measuring device 100 can be used for detecting the distance and the direction of an object close to the lifting arm end 220 in the operation process of the lifting device 200, so that the excessive approach of the lifting arm end 220 and the adjacent object is avoided, a high-voltage discharge or collision accident occurs to an electric power system, the lifting device 200 or the electric power device is damaged, and the safety of the lifting device 200 in the operation process is further ensured.

As shown in fig. 3, the safety distance measuring device 100 includes a base 1, a driving part 2, a detecting device and a control part, wherein the base 1 is fixedly arranged at a boom tip 220 of a lifting apparatus 200, the detecting device includes a measuring part 4, a first triggering member 51 and a plurality of second triggering members 52, wherein the measuring part 4 can measure a distance between an adjacent object and the boom tip 220, the driving part 2 can drive the measuring part 4 to rotate around a rotation axis relative to the base 1, the second triggering members 52 are uniformly spaced along a circumferential direction of the rotation axis, and one of the first triggering member 51 and the second triggering member 52 is fixed relative to the base 1, and the other is fixed relative to the measuring part 4.

The adjacent object is the object closest to the boom end 220, the first trigger 51 and the second trigger 52 can rotate relatively in the process of driving the measuring part 4 to rotate relative to the base 1 by the driving part 2, the first trigger 51 can sequentially pass through and trigger each second trigger 52, the triggered second trigger 52 can send a trigger signal to the control part, meanwhile, the control part can obtain the distance signal of the measuring part 4, and the control part can know the orientation of the object corresponding to the distance signal according to the second trigger 52 corresponding to the trigger signal. Specifically, how to send the trigger signal to the control portion after the second trigger element 52 is triggered, and how to obtain the distance signal of the measuring portion 4 by the control portion according to the trigger signal are well known in the prior art for those skilled in the art, and are not described herein again for brevity.

The first trigger 51 can only trigger one of the second trigger 52 at the same time, and when the measuring part 4 rotates relative to the base 1 until the first trigger 51 triggers one of the second trigger 52, the second trigger 52 sends a trigger signal to the control part, and the measuring part 4 also sends a measured distance signal to the control part, wherein the distance signal corresponds to the trigger signal one by one, the distance signal refers to the distance between a nearby object and the boom end 220, and the orientation of the nearby object can be known through the trigger signal.

Because the second trigger 52 is arranged along the rotation axis circumference of the rotating part 3, after the measuring part 4 rotates one circle relative to the base 1, the control part can acquire the distance information and the orientation information of the adjacent object about 360 degrees of one circle sent by the detecting device, if the distance of the adjacent object of the circle is greater than the safe distance, no danger occurs, the safety is ensured, if the distance of the adjacent object is less than the safe distance, the specific orientation can be known according to the orientation information corresponding to the distance information, and the checking is carried out, so that the safety is ensured.

Specifically, as shown in fig. 5, the first trigger 51 may be relatively fixed to the base 1, the second trigger 52 may be relatively fixed to the measuring portion 4 and may rotate with the measuring portion 4, the measuring portion 4 drives all the second triggers 52 to rotate, when each second trigger 52 rotates to correspond to the first trigger 51, the second trigger 52 may be triggered, or the first trigger 51 and the measuring portion 4 may be relatively fixed and may rotate with the measuring portion 4, the second trigger 52 is relatively fixed to the base 1, when the measuring portion 4 rotates, the first trigger 51 may be driven to rotate, and when the first trigger 51 rotates to correspond to one second trigger 52, the second trigger 52 may be triggered.

In this embodiment, the first triggering member 51 is a photo-electric emitting tube, the second triggering member 52 is a photo-electric receiving tube, the photo-electric emitting tube always emits light, and when the photo-electric receiving tube relatively rotates to correspond to the photo-electric emitting tube, the photo-electric receiving tube can receive the light emitted by the photo-electric emitting tube and is triggered, so as to send a triggering signal to the control unit.

Because in the operation process of lifting by crane, the measuring part 4 can be driven to rotate by the drive part 2 ceaselessly to can the real-time supervision davit tip 220 circumference different position close on the distance of the object, when monitoring that the distance that closes on the object in a certain position is not more than safe distance, accessible display device and alarm device send tip information, so that in time take measures, avoid causing the potential safety hazard. The safe distance is a specific distance value (for example, the safe distance is 16 meters in this embodiment), when the distance of an adjacent object is greater than the safe distance, it indicates that the object is at a safe position relative to the end of the boom 210, and when the distance of the adjacent object is not greater than the safe distance, it indicates that the adjacent object has a potential safety hazard and needs to be handled in time. Thereby improving the safety in the operation process.

In this embodiment, the measuring unit 4 includes a microwave radar 41, as shown in fig. 6 and 7, main performance parameters of the microwave radar 41 include a detection range L, a horizontal lobe angle α, and a vertical lobe angle β, where the detection range L is not less than a safe distance, and all objects in the safe distance range are ensured to be detected, an angle of view of the microwave radar 41 is α × β, which reflects an energy concentration of a beam of the microwave radar 41, and as shown in fig. 8, a target object having a certain size is detected by the radar within a sector (hereinafter, referred to as a "sector") defined by the detection range L, the horizontal lobe angle α, and the vertical lobe angle β. The number of the second triggering pieces 52 is not less than 360 degrees/alpha, so that the detection device can realize 360-degree all-directional dead-angle-free detection along the circumferential direction.

Of course, in this embodiment, the measuring unit 4 may also detect the distance of the object by other methods, such as infrared, ultrasonic, laser, etc., and a plurality of sectors are provided by the first trigger 51 and the second trigger 52, and the distance of the object in each sector is detected, and the microwave radar 41 is not affected by temperature, humidity, noise, airflow, dust, light, etc., and is suitable for severe environment, and has strong radio frequency interference resistance, long detection distance, good directionality of microwave, speed equal to light speed, and small output power, and is not harmful to human body.

As shown in fig. 3 and 4, the detecting device further includes a rotating portion 3, the rotating portion 3 is in transmission connection with the main shaft 21 of the driving portion 2 through a coupler 10, one end of the rotating portion 3 is provided with a mounting seat 42 for mounting the microwave radar 41, the other end of the rotating portion 3 is provided with a trigger, and when the microwave radar 41 is mounted on the mounting seat 42, an included angle between an antenna surface 411 of the microwave radar 41 and a rotation axis is 45 °, and the antenna surface 411 is disposed toward a side away from the base 1. As shown in fig. 6, an included angle (a vertical lobe angle β) between two side boundaries of the detection range of the microwave radar 41 is not less than 90 °, that is, the included angle is a right angle or an obtuse angle, one side boundary of the included angle exceeds the vertical direction, the other side boundary of the included angle exceeds the horizontal direction, and after one circle of detection, a complete hemispherical region can be formed.

As shown in fig. 3 and 4, the number of the mounting seats 42 is two, the two mounting seats 42 are symmetrically arranged about the rotation axis, and thus the rotating portion 3 can ensure balance by the mounting seats 42 in the rotating process, so as to avoid shaking, specifically, only one of the two mounting seats 42 may be provided with the microwave radar 41, or the two mounting seats 42 may be respectively provided with the microwave radar 41, and the two microwave radars 41 are redundant to each other, and only one of the two mounting seats is in the working state at the same time.

As shown in fig. 5, the rotating part 3 includes a barrel 31, a flange plate 33 and a mounting plate 32 are respectively disposed at two ends of the barrel 31, wherein the flange plate 33 is used for fixing a mounting seat 42, the mounting plate 32 is used for mounting a trigger, a coupler 10 is located in the barrel 31 and is coaxial with the barrel 31, the coupler 10 is fixed with the flange plate 33 and the mounting plate 32, the driving part 2 is a motor located in the base 1, a main shaft 21 of the motor is located in the coupler 10, and as shown in fig. 15, the coupler 10 and the main shaft 21 are positioned by a positioning screw 101 to prevent relative rotation, thereby ensuring stable transmission.

One of the flange plates 33 and the mounting plates 32 at both ends of the cylinder 31 is integrally formed with the cylinder 31, and the other can be fixedly mounted on the cylinder 31 by fasteners, or the flange plates 33 and the mounting plates 32 can be fixedly mounted on the cylinder 31 by fasteners respectively.

Since the mounting plate 32 is provided with the mounting holes 35, the mounting holes 35 are used for mounting the trigger, and the second trigger 52 is mounted to the rotating portion 3, the number of the mounting holes 35 is the same as the number of the second trigger 52, the mounting holes 35 are uniformly spaced in the circumferential direction of the mounting plate 32, and if the first trigger 51 is mounted to the rotating portion 3, only one mounting hole 35 may be provided in the mounting plate 32.

As shown in fig. 5, each second trigger 52 is further connected to a circuit board 53, the circuit board 53 is disposed in the cylinder 31, and the same circuit board 53 is connected to each second trigger 52 at the same time, however, each second trigger 52 may be provided as a separate component capable of sending a signal to the control unit after being triggered, and when the circuit board 53 is connected to each second trigger 52 to send a trigger signal after being triggered, the overall structure can be simplified.

As shown in fig. 13, the inner wall of the mounting plate 32 is circumferentially provided with mounting protrusions 34, the mounting holes 35 are respectively provided in the mounting protrusions 34, the mounting protrusions 34 are circumferentially arranged on the inner wall of the mounting plate 32 and are in an annular structure, specifically, the mounting protrusions 34 can increase the length of the mounting holes 35, and the second trigger 52 is stably mounted.

The safety ranging apparatus 100 includes a battery 61 and a power supply part. As shown in fig. 4 and 5, the base 1 includes an upper base body 11 and a lower base body 12, the upper base body 11 can cover the upper side of the lower base body 12 and enclose to form an accommodating cavity 13, the driving part 2 is a motor disposed in the accommodating cavity 13, and a driving circuit board 22 connected to the motor, a battery 61, a switch 64 for controlling the battery 61 and a power supply part, and the like are further disposed in the accommodating cavity 13. The battery 61 is arranged in the accommodating cavity 13 of the base 1 and used for supplying power to the driving part 2 and the trigger part fixed relative to the base 1, and the power supply part is used for supplying power to the trigger part arranged on the rotating part 3 and the measuring part 4.

Specifically, the power supply portion includes power receiving coil 63 and power transmitting coil 62, as shown in fig. 5, power receiving coil 62 and power receiving coil 63 are located the both sides of mounting panel 32 respectively, and power transmitting coil 62 is relatively fixed with base 1, and power receiving coil 63 is located barrel 31, and when rotating portion 3 rotated, can drive power receiving coil 63 and rotate for power transmitting coil 62 to the realization is to circuit board 53 and measuring portion 4 power supply.

Specifically, the mounting protrusion 34 may be a continuous ring structure, or a plurality of protrusions may be arranged at intervals along the ring structure. As shown in fig. 5, the second triggering member 52 is installed in the installation hole 35 of the installation protrusion 34, the circuit board 53 is located at the top end of the installation protrusion 34, the installation protrusion 34 can form an intermittent or continuous annular structure in the circumferential direction, the power receiving coil 63 is located in the annular structure, and the thickness of the power receiving coil 63 is smaller than the height of the installation protrusion 34, so as to prevent the circuit board 53 from directly contacting the power receiving coil 63 and causing interference to the circuit board 53.

The base 1 is further provided with a power supply box 7 on a side facing the rotating portion 3, as shown in fig. 5 and 14, the power supply box 7 includes an upper box body 71 and a lower box body 72, wherein the lower box body 72 is fixed with the base 1, the upper box body 71 is facing the side of the rotating portion 3, the upper box body 71 can be fastened and fixed on the lower box body 72 and forms a cavity with the lower box body 72, and the cavity is used for placing the power supply transmitting coil 62. Of course, in this embodiment, the power transmitting coil 62 may also be disposed in the base 1, and the power box 7 may further enable the distance between the power transmitting coil 62 and the power receiving coil 63 to be short, so as to ensure that power transmission is achieved. And, the upper box body 71 is arranged towards one side of the cylinder 31, and the photoemissive tube is fixedly arranged on the upper box body 71.

Of course, in the present embodiment, the battery 61 may be provided in the rotating portion 3 to supply power, and only a part of the power supply portion (the power receiving coil 63) may be provided in the rotating portion 3, so that the entire weight of the rotating portion 3 can be effectively reduced, and the power consumption of the driving portion 2 can be reduced. Of course, the power supply unit may be a slip ring, and when the short-distance wireless power supply is realized by the power transmitting coil 62 and the power receiving coil 63, the entire structure can be simplified, and the cost is low and the stability is good.

In addition, a magnetism shielding sheet 8 is further disposed on a side of the power transmitting coil 62 away from the power receiving coil 63 (i.e., a side facing the lower case 72), the magnetism shielding sheet 8 is disposed to prevent high-energy electromagnetic waves from interfering with the driving circuit board 22, and the magnetism shielding sheet 8 is further disposed on a side of the power receiving coil 63 away from the power transmitting coil 62 and is disposed to interfere with the circuit board 53 connected to the second triggering member 52.

In this embodiment, the control unit further includes an alarm device, and when detecting that the distance to the adjacent object is smaller than the safety distance, the alarm device may send an alarm signal, specifically, the alarm signal may be a sound signal or a photoelectric signal, and the control unit may further display the detection result (including distance information and orientation information of the adjacent object) by setting the display device. When the control part receives the information received in one detection cycle, the following two methods can be used for processing:

the first mode is that the distance of the object in each sector is compared with the safe distance in real time, and when the distance of the object is not more than the safe distance, the distance and the direction of the corresponding object are displayed and simultaneously reported through voice through a display device so as to be convenient for timely troubleshooting;

the second mode is that the control part compares these 12 groups of data after 12 sectors are all surveyed and accomplished, obtains the data that numerical value is minimum again earlier, compares this data and safe distance, if the distance of object is not more than safe distance, then broadcasts the distance and the position of corresponding object through the pronunciation through display device display simultaneously, if the distance of all objects in 12 sectors is not less than safe distance, then need not the voice broadcast, directly get into next detection cycle can.

When the control portion processes information in the second manner, the control portion further includes a counter, and the counter is used for recording the number of the second trigger pieces 52 triggered by the first trigger piece 51, in this embodiment, there are 12 second trigger pieces 52, and each time one second trigger piece 52 passes through the first trigger piece 51, the counter automatically increments by 1, and when each first trigger piece 51 passes through and triggers 12 trigger pieces in sequence, the counter is automatically cleared, and the next counting cycle is entered.

The operation principle of the safety ranging apparatus 100 provided in the present embodiment will be described in detail below.

In this embodiment, the detection range L of the microwave radar 41 is 25 meters, the horizontal lobe angle α is about 32 °, the vertical lobe angle β is about 90 °, as shown in fig. 6, the antenna surface 411 of the microwave radar 41 and the horizontal surface form 45 °, under the driving action of the driving part 2, the microwave radar 41 can cover 360 ° in front of the boom end 220 and the entire hemispherical airspace range with a radius of about 25 meters by rotating one circle, and when an object falls into the airspace range, the object can be detected. The number of the second triggering parts 52 is 12, the whole hemispherical airspace range which can be detected by the microwave radar 41 is divided into 12 sectors from sector 0 to sector 11, each sector is 30 degrees and does not exceed the horizontal lobe angle 32 degree of the microwave radar 41, that is, the coverage ranges of adjacent sectors are overlapped a little, the weak echo of the radar at the lobe angle edge is mainly considered, and the overlap of a small part is beneficial to ensuring that the target at the lobe angle edge can be detected without dead angles. The detection data of the microwave radar 41 read in different sectors are stored in corresponding position variables, so that the azimuth data and the distance data can be obtained simultaneously, and the control part can display or broadcast the specific distance and the azimuth of the object closest to the end part of the crane in the whole hemispherical airspace range through a display, so that the position of the adjacent object is accurately locked.

12 photoelectric receiving tubes (namely, the second trigger pieces 52) are uniformly arranged on the circumferential direction of the mounting plate 32, the 12 photoelectric receiving tubes are respectively g 0-g 11 in sequence, namely, a circle 12 is equally divided into 12 sectors, the whole hemispherical airspace range in front of the microwave radar 41 is correspondingly divided into 12 sectors, and a photoelectric transmitting tube (the first trigger piece 51) m is fixed with the upper box body 71 of the power box, the position of the photoelectric transmitting tube is unchanged, and the photoelectric transmitting tube continuously emits light.

In fig. 9-12, the microwave radar 41 scans 360 ° in one scanning period, and drives each photo-receiving tube to receive the optical signal of the photo-transmitting tube m and be triggered when passing through different sectors.

As shown in fig. 9, the sector 0 is the initial position of the microwave radar 41, when the microwave radar 41 rotates to the sector 0, the microwave radar 41 can detect the distance of the object located in the sector 0, the photo-electric transmitting tube m corresponds to the photo-electric receiving tube g0, the photo-electric receiving tube g0 is turned on and triggered by receiving the optical signal of the photo-electric transmitting tube m, the control unit sends a data reading command to the microwave radar 41 by an interrupt method, obtains the distance and the orientation of the object in the sector 0, stores the result in the global variable n0, and the counter automatically increments by 1, that is, k is 0+1 and 1 is 1.

Specifically, the control part adopts an interrupt mode, namely the control part controls the current program to be suspended and then executes an interrupt task, the interrupt task comprises reading the distance and the direction in the corresponding sector, storing the result into a global variable, adding 1 to the counter in a braking mode, and then controlling the control part to continue executing the program.

Specifically, after the microwave radar 41 starts to operate, no matter which sector position the microwave radar 41 is located in, when the microwave radar 41 rotates to sector 0, a new scanning cycle is started.

The driving part 2 drives the rotating part 3 to rotate, the rotating part 3 drives the measuring part 4 to rotate, and simultaneously drives the photoelectric receiving tube to rotate relative to the photoelectric transmitting tube, as shown in fig. 10, when the microwave radar 41 rotates to the position of the sector 1, namely the photoelectric receiving tube g1 rotates to correspond to the photoelectric transmitting tube m, the photoelectric receiving tube g1 receives the optical signal of the photoelectric transmitting tube m to conduct and be triggered, the control part adopts an interrupt mode to send a data reading command to the microwave radar 41, obtains the distance and the orientation of an object in the sector 1, stores the result into a global variable n1, and the counter automatically adds 1, namely k is 1+ 1-2.

As shown in fig. 11, when the microwave radar 41 rotates to the position of sector 2, that is, the photo receiver g2 receives the light signal of the photo emitter m and is turned on and triggered, the control unit sends a data reading command to the microwave radar 41, obtains the distance and the orientation of the object in the sector 2, stores the result in the global variable n2, and automatically increments the counter by 1, that is, k is 2+1 and 3.

By analogy, the rotating part 3 rotates and drives the photo receiver tubes to rotate relative to the photo transmitter tubes, the photo transmitter tubes sequentially pass through and trigger the photo receiver tubes until as shown in fig. 12, when the microwave radar 41 rotates to the position of the sector 11, that is, the photo receiver tubes g11 rotate to correspond to the photo transmitter tubes m, the photo receiver tubes g11 receive the light signals of the photo transmitter tubes m to conduct and be triggered, the control part sends a data reading command to the microwave radar 41 in an interrupt manner, obtains the distance and the orientation of the object in the sector 11, stores the result in the global variable n11, the counter automatically adds 1, that is, k is 11+1 to 12, that is, the technical variable k recorded by the technical device reaches all the numbers 12 of the photo receiver tubes, the microwave radar 41 has finished detecting the objects in 12 sectors, the control part compares the 12 groups of global variables n0 to n11, and obtaining data with the minimum numerical value, comparing the data with the safe distance, if the distance of the object is not more than the safe distance, displaying through a display device, and simultaneously sending an alarm signal through an alarm device to prompt the distance and the direction of the corresponding object, and if the distances of all the objects in the 12 sectors are not less than the safe distance, directly entering the next detection cycle without voice broadcast until receiving a scanning stopping command of a control part.

Therefore, all targets in the whole hemispherical airspace range with the radius of the microwave radar detection distance and 360 degrees in front of the end part 220 of the suspension arm are completely covered. The microwave radar detects that the target data refresh frequency is 50Hz, namely 50 times per second, and the control part reads data 12 times per second and is far lower than the value, so that data overload does not need to be worried about.

The safety distance measuring device 100 provided by this embodiment further includes a clamping mechanism 9, the clamping mechanism 9 can fix the safety distance measuring device 100 to the boom end 220, specifically, as shown in fig. 16, the clamping mechanism 9 includes a clamping portion 91, a connecting portion 92, an adjusting portion 93 and a tray, wherein the connecting portion 92 is connected between the clamping portion 91 and the tray, the tray is used for being fixed to the base 1, the clamping portion is clamped and fixed to the end wing plate of the boom 210, the adjusting portion 93 includes an adjusting member (such as a handle, a motor, etc.), a transmission component (such as a worm gear, a gear component, etc.) and a rotating shaft, wherein the rotating shaft is fixed to the tray, the adjusting member can adjust the rotating shaft to rotate through the transmission component, and drive the tray to rotate relative to the connecting portion 92, that is, after the clamping portion 91 is clamped and fixed to the wing plate of the boom 210, the adjusting member is operated to adjust the rotating shaft to rotate through the transmission component, and then the tray is driven to rotate to adjust the angle of the tray, so that the rotation axis of the rotating part 3 is approximately parallel to the vertical direction, at this time, the included angle between the antenna surface 411 of the microwave radar 41 and the horizontal plane is approximately 45 degrees, almost all the detected hemispherical area is above the end part of the suspension arm 210, and the detection result is ensured to be more comprehensive.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (14)

1. The safety distance measuring device of the lifting equipment is characterized by comprising a base (1), a driving part (2), a detecting device and a control part;

the base (1) is fixedly arranged at the end part (220) of the suspension arm of the hoisting equipment (200);

the detection device comprises a measuring part (4), a first trigger (51) and a plurality of second triggers (52), wherein the measuring part (4) can measure the distance between a nearby object and the suspension arm end (220), and the driving part (2) can drive the measuring part (4) to rotate around a rotating axis relative to the base (1);

the second trigger pieces (52) are uniformly arranged along the circumferential direction of the rotating axis at intervals, one of the first trigger piece (51) and the second trigger piece (52) is fixed relative to the base (1), the other one of the first trigger piece (51) and the second trigger piece (52) is fixed relative to the measuring part (4), the first trigger piece (51) can sequentially and independently trigger the second trigger pieces (52) along with the rotation of the measuring part (4), the triggered second trigger piece (52) can send a trigger signal to the control part, and the control part can acquire a distance signal of the measuring part (4).

2. The safety ranging device of a hoisting apparatus according to claim 1, wherein the measuring part (4) comprises a microwave radar (41), a detection range of the microwave radar (41) is not less than a safety distance, a horizontal lobe angle of the microwave radar (41) is α, the number of the second triggering members (52) is not less than 360 °/α, a vertical lobe angle of the microwave radar (41) is β, and β is not less than 90 °.

3. The safety distance measuring device of hoisting equipment according to claim 2, wherein the detecting device further comprises a rotating part (3), one end of the rotating part (3) is provided with a mounting seat (42) for mounting the microwave radar (41), the other end of the rotating part (3) is provided with a trigger, and when the microwave radar (41) is mounted on the mounting seat (42), an included angle between an antenna surface (411) of the microwave radar (41) and the rotation axis is 45 °, and the antenna surface (411) is arranged towards one side far away from the base (1).

4. The safety ranging device of a hoisting apparatus according to claim 3, characterized in that the number of the mounting seats (42) is two, and the two mounting seats (42) are symmetrically arranged with respect to the rotation axis.

5. The safety distance measuring device of hoisting equipment according to claim 3, wherein the rotating part (3) comprises a cylinder (31), one end of the cylinder (31) is provided with a mounting plate (32) for mounting a trigger, the other end of the cylinder (31) is provided with a flange plate (33), and the mounting seat (42) is fixedly arranged on the flange plate (33);

the inner wall of mounting panel (32) still is equipped with mounting hole (35), mounting hole (35) are used for the installation the trigger.

6. The safety distance measuring device of hoisting equipment according to claim 5, wherein the inner wall of the mounting plate (32) is provided with a mounting protrusion (34) along the circumferential direction, and the mounting hole (35) is formed in the mounting protrusion (34).

7. The safety distance measuring device of the hoisting equipment as recited in any one of claims 1 to 6, wherein the control part further comprises a counter for circularly recording the number of the second triggering members (52) which are passed by and triggered by the first triggering member (51), and when the number recorded by the counter reaches the total number of the second triggering members (52), the counter is cleared and enters the next counting cycle.

8. The safety distance measuring device of the hoisting equipment according to any one of claims 3 to 6, further comprising a battery (61) and a power supply part, wherein the battery (61) is arranged on the base (1) and is used for supplying power to the driving part (2) and the trigger part fixed relative to the base (1), and the power supply part is used for supplying power to the trigger part fixed relative to the measuring part (4) and the measuring part (4).

9. The safety distance measuring device of hoisting equipment according to claim 8, wherein the power supply part comprises a power supply receiving coil (63) and a power supply transmitting coil (62), the power supply transmitting coil (62) is fixed relative to the base (1), and the power supply receiving coil (63) can rotate along with the measuring part (4) relative to the power supply transmitting coil (62).

10. The safety distance measuring device of hoisting equipment according to claim 9, wherein a power supply box (7) is further arranged on one side of the base (1) facing the rotating part (3), the power supply box (7) comprises an upper box body (71) and a lower box body (72), the lower box body (72) is fixed to the base (1), and the upper box body (71) can be fastened and fixed to the lower box body (72) and encloses with the lower box body (72) to form a cavity for placing the power supply transmitting coil (62).

11. The safety distance measuring device of hoisting equipment according to claim 9, wherein the side of the power transmitting coil (62) far away from the power receiving coil (63) and the side of the power receiving coil (63) far away from the power transmitting coil (62) are respectively provided with a magnetic shielding sheet (8).

12. The safety distance measuring device of hoisting equipment according to any one of claims 1-6, wherein the first triggering member (51) is a photoelectric transmitting tube and the second triggering member (52) is a photoelectric receiving tube.

13. The safety distance measuring device of the hoisting equipment as claimed in any one of claims 1 to 6, further comprising a clamping mechanism (9), wherein the clamping mechanism (9) comprises a clamping part (91), a connecting part (92), an adjusting part (93) and a tray, and the connecting part (92) is connected between the clamping part and the tray;

the tray can be fixed with the base (1);

the clamping part (91) is clamped and fixed with an end wing plate of the suspension arm (210);

the adjusting part (93) comprises an adjusting part, a transmission assembly and a rotating shaft, the tray is fixed to the rotating shaft, and the adjusting part can adjust the rotating shaft to rotate through the transmission assembly and drive the tray to rotate relative to the connecting part (92).

14. A hoisting device, characterized by comprising a boom (210) and a safety ranging device according to any of claims 1-13.

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