CN114534133B

CN114534133B - Intelligent public security system

Info

Publication number: CN114534133B
Application number: CN202210060183.0A
Authority: CN
Inventors: 袁思赞; 曾泓铭; 曾志长; 吴诗莹; 蔡恩澍
Original assignee: Fujian Zhengyang Technology Co ltd
Current assignee: Fujian Zhengyang Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2023-06-30
Anticipated expiration: 2042-01-19
Also published as: CN114534133A

Abstract

The invention discloses an intelligent public security system, which comprises a guide pipeline, a fire extinguishing device arranged on the guide pipeline and a lifting driving device for driving the fire extinguishing device to move up and down along the guide pipeline, wherein a water outlet through hole communicated with the fire extinguishing device is formed in the guide pipeline. After adopting above-mentioned structure, when high-rise floor fires, lift drive arrangement can drive extinguishing device to rise to the floor of firing to extinguishing device and play water through-hole intercommunication make the water in the guide pipeline can be through extinguishing device blowout, put out a fire to the point of firing fast. Compared with the prior art, the fire extinguishing device has the beneficial effects that the fire extinguishing device can extinguish fire on a fire floor rapidly, fight for valuable time for arrival of a fire truck, prevent further spread of fire, and reduce casualties and property damage; and the fire extinguishing device is not limited by the height, and can carry out emergency fire extinguishing treatment on each floor, so that the safety protection of the high-rise floor is improved, and the personal and property safety of high-rise households is further ensured.

Description

Intelligent public security system

Technical Field

The invention relates to the technical field of security, in particular to an intelligent public security system.

Background

With the continuous development of national economy, the more high-rise buildings and super high-rise buildings originally, people have to face the problems of emergency rescue and safety precaution of the high-rise buildings while enjoying the achievements brought by the economic development. In recent years, a plurality of high-rise building fire events occur, firefighters cannot reach high-rise fire points for fire extinguishment at the first time due to the fact that the height of a floor is too high, smoke is large and the like, and fire-fighting scaling ladders and water gun ranges cannot extinguish the fire points in time due to height limitation. Therefore, an intelligent public security system is urgently needed, alarming and fire extinguishing treatment can be carried out at the first time of building fire, fire spreading is reduced, and casualties and property loss of personnel are avoided.

In view of this, the present applicant has made intensive studies with respect to the above problems, and has made the present invention.

Disclosure of Invention

The invention mainly aims to provide an intelligent public security system which can initiate an alarm at the first time when a building fires and extinguish the fire.

In order to achieve the above object, the solution of the present invention is:

the intelligent public security system comprises a guide pipeline, a fire extinguishing device arranged on the guide pipeline and a lifting driving device for driving the fire extinguishing device to move up and down along the guide pipeline, wherein a water outlet through hole communicated with the fire extinguishing device is formed in the guide pipeline.

Further, the fire extinguishing device comprises a device main body, a water outlet pipe and a driving arm; the device body is provided with a connecting hole part matched with the guide pipeline, and is also provided with a water inlet hole and a water outlet hole which are mutually communicated, the water inlet hole is communicated with the water outlet through hole, one end of the water outlet pipe is connected with the water outlet hole, and the other end of the water outlet pipe is connected with the driving arm.

Further, the driving arm comprises a first rotating part, a second rotating part, a third rotating part and a fourth rotating part which are sequentially connected.

Further, the first rotating part comprises a rotating block and a first rotating driving device, the first rotating driving device is arranged on the device main body, the rotating block is connected with the first rotating driving device, and the first rotating driving device drives the rotating block to rotate.

Further, the first rotation driving device comprises a first motor, a first gear and a second gear, the first motor is arranged on the device main body, the power output end of the first motor is connected with the first gear, the second gear is connected with the rotating block, the second gear is connected with the device main body in a rotating mode, and the second gear and the first gear are meshed with each other.

Further, the second rotating part comprises a first arm rod and a second rotating driving device, the first arm rod is rotationally connected with the rotating block, the second rotating driving device is arranged on the rotating block, and the power output end of the second rotating driving device is connected with the first arm rod.

Further, the second rotation driving device comprises a second motor and a first rotating shaft, the second motor is arranged on the rotating block, the first arm rod is connected with the first rotating shaft through a spline, the rotating block is provided with a first abdicating groove, two ends of the first rotating shaft are respectively connected with the side wall of the first abdicating groove in a rotating mode, and the power output end of the second motor is connected with the first rotating shaft.

Further, the third rotation part comprises a second arm rod and a third rotation driving device, the second arm rod is rotationally connected with the first arm rod, the third rotation driving device is arranged on the first arm rod, and the power output end of the third rotation driving device is connected with the second arm rod.

Further, the third rotation driving device comprises a third motor and a second rotating shaft, the third motor is arranged on the first arm rod, the second arm rod is connected with the second rotating shaft through a spline, the first arm rod is provided with a second abdicating groove, two ends of the second rotating shaft are respectively connected with the side wall of the second abdicating groove in a rotating mode, and the power output end of the third motor is connected with the second rotating shaft.

Further, the fourth rotating part comprises a third arm rod and a fourth rotating driving device, the third arm rod is rotationally connected with the second arm rod, the fourth rotating driving device is arranged on the third arm rod, and the power output end of the third rotating driving device is connected with the second arm rod.

Further, the fourth rotation driving device comprises a fourth motor and a third rotating shaft, the fourth motor is arranged on the third arm rod, the third rotating shaft is connected with the second arm rod through a spline, the third arm rod is provided with a third abdicating groove, two ends of the third rotating shaft are respectively connected with the side wall of the third abdicating groove in a rotating mode, and the power output end of the fourth motor is connected with the third rotating shaft.

Further, the section of the third arm rod far away from one side of the second arm rod is provided with an impact bump.

Further, the upper end of the impact lug is provided with a rounded corner.

Further, be equipped with the plugging device that carries out shutoff to the outlet opening in the guide duct, plugging device includes shutoff head, reset spring and two guide bars, reset spring sets up along the axial level of outlet opening, reset spring's one end is connected and the other end supports the shutoff head with the guide duct inside wall, two guide bars are established respectively in reset spring's both sides, the shutoff head is equipped with and supplies the guide bar to pass complex guiding hole.

Further, the fire extinguishing device is provided with a propping device for propping the blocking head, the propping device comprises a propping head and a horizontal driving device, the propping head is arranged in the water inlet, the horizontal driving device is arranged on the device main body, and the horizontal device drives the propping head to horizontally move along the axis direction of the water inlet.

Further, the propping head comprises a propping head main body, a plurality of water through holes are formed in the propping head main body, a plurality of protruding propping teeth are formed in the end face of one side, close to the guide pipeline, of the propping head main body, and water outlet gaps are formed between the propping teeth.

Further, the horizontal driving device is an air cylinder, and a piston rod of the air cylinder is connected with the propping head.

Further, the lifting driving device comprises tooth rows arranged on two sides of the guide pipeline, a third gear meshed with the tooth rows and a fifth rotation driving device for driving the third gear to rotate, the third gear is rotationally connected with the device main body, and the fifth rotation driving device is arranged on the device main body.

Further, the device body is provided with mounting portions extending outwards at two sides, the mounting portions are provided with mounting grooves, and the third gear is arranged in the mounting grooves.

Further, the fifth rotation driving device comprises a fourth rotating shaft, a fourth gear, a fifth gear and a fifth motor; the fourth rotating shaft is rotationally connected with the side wall of the mounting part, and the fourth gear and the third gear are respectively connected with two ends of the fourth rotating shaft; the device is characterized in that the device main body is provided with a mounting plate, the fifth motor is arranged on the mounting plate, the power output end of the fifth motor is connected with a fifth gear, and the fifth gear is meshed with a fourth gear.

Furthermore, the guide pipeline is correspondingly provided with a water outlet through hole at the height of each floor.

Further, the system also comprises a control system, wherein the control system comprises a temperature sensing device, and the guide pipeline is correspondingly provided with a temperature sensing device at each floor level.

After the structure is adopted, the invention relates to an intelligent public security system, when a high-rise building is on fire, the lifting driving device can drive the fire extinguishing device to rise to the fire building at the first time, and the fire extinguishing device is communicated with the water outlet through hole, so that water in the guide pipeline can be sprayed out through the fire extinguishing device to rapidly extinguish the fire at the fire point.

Compared with the prior art, the fire extinguishing device has the beneficial effects that the fire extinguishing device can extinguish fire on a fire floor rapidly, fight for valuable time for arrival of a fire truck, prevent further spread of fire, and reduce casualties and property damage; and the fire extinguishing device is not limited by the height, and can carry out emergency fire extinguishing treatment on each floor, so that the safety protection of the high-rise floor is improved, and the personal and property safety of high-rise households is further ensured.

Drawings

Fig. 1 is a perspective view of the outline structure of the present invention.

Fig. 2 is a perspective view of the external structure of the fire extinguishing apparatus.

Fig. 3 is a perspective view of another external structure of the fire extinguishing apparatus.

FIG. 4 is a schematic cross-sectional view of a fire extinguishing apparatus and a guide pipe

Fig. 5 is a top view of the exterior structure of the fire extinguishing apparatus.

Fig. 6 is a perspective view of the outer structure of the abutment.

Fig. 7 is a perspective view of the external structure of the fire extinguishing device matched with the guide pipeline.

In the figure:

a guide pipe-1; a water outlet through hole-11; a fire extinguishing device-2; a device main body-21;

a connection hole portion-211; water inlet-212; a water outlet hole-213; a mounting portion-214;

mounting slots-215; mounting plates-216; a water outlet pipe-22; a driving arm-23;

a first rotating portion-24; a rotating block-241; a first relief groove-2411; a first motor-242;

a first gear-243; a second gear-244; a second rotating portion-25; a first arm-251;

a second relief slot-2511; a second motor-252; a first rotation shaft-253;

a third rotating portion-26; a second arm-261; a third motor-262; a second spindle-263;

a fourth rotating portion-27; a third arm-271; third relief groove-2711;

a fourth motor-272; a third rotation shaft-273; strike the bump-28; a blocking head-31;

a return spring-32; a guide bar-33; a pushing head-41; water through hole-411; an abutment tooth-412;

a water outlet gap-413; a horizontal driving means-42; tooth row-51; a third gear-52;

a fourth rotating shaft-53; fourth gear-54; fifth gear-55; and a fifth motor-56.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.

As shown in fig. 1 to 7, an intelligent public security system comprises a guide pipeline 1, a fire extinguishing device 2 arranged on the guide pipeline 1, and a lifting driving device for driving the fire extinguishing device 2 to move up and down along the guide pipeline 1, wherein the guide pipeline 1 is vertically arranged on an outer wall of a floor, the guide pipeline 1 can be communicated with a water tank at the top of the floor, and water is supplied to the guide pipeline 1 through the water tank; the outer surface of the guide pipeline 1 is provided with a plurality of water outlet through holes 11 along the height direction, when the fire extinguishing device 2 needs to discharge water, the water outlet through holes 11 are communicated, and the guide pipeline 1 provides a water source for the fire extinguishing device 2; the lifting driving device can drive the fire extinguishing device 2 to perform lifting motion on the guide pipeline 1 in a driving mode of matching a motor with a lifting hook, a chain or a gear tooth row.

After adopting above-mentioned structure, when high-rise floor fires, lift drive arrangement can drive extinguishing device 2 rise to the floor of firing very first time to extinguishing device 2 and play water through-hole 11 intercommunication make the water in the guide pipeline 1 can be through extinguishing device 2 blowout, put out a fire to the point of firing fast.

Compared with the prior art, the fire extinguishing device has the beneficial effects that the fire extinguishing device can extinguish fire on a fire floor rapidly, fight for valuable time for arrival of a fire truck, prevent further spread of fire, and reduce casualties and property damage; and the fire extinguishing device 2 is not limited by the height, and can carry out emergency fire extinguishing treatment on each floor, so that the safety protection of the high-rise floor is improved, and the personal and property safety of high-rise households is further ensured.

Preferably, the fire extinguishing apparatus 2 comprises an apparatus body 21, a water outlet pipe 22 and a driving arm 23; the device main body 21 is provided with a connecting hole part 211 matched with the guide pipeline 1, the connecting hole part 211 is sleeved on the outer surface of the guide pipeline 1, the device main body 21 is also provided with a water inlet hole 212 and a water outlet hole 213 which are mutually communicated, the water inlet hole 212 is communicated with the water outlet through hole 11, one end of the water outlet pipe 22 is connected with the water outlet hole 213, and the other end is connected with the driving arm 23; during operation, water flow in the guide pipeline 1 can sequentially flow through the water inlet hole 212 and the water outlet hole 213 and is sprayed out through the water outlet pipe 22, the driving arm 23 is connected with the water outlet pipe 22, and the water outlet pipe 22 can be driven to swing in multiple directions, so that the water outlet direction of the water outlet pipe 22 is regulated.

Preferably, the driving arm 23 includes a first rotating portion 24, a second rotating portion 25, a third rotating portion 26 and a fourth rotating portion 27 which are sequentially connected, and by adopting the above structure, the driving arm 23 is formed by connecting a plurality of rotating portions, and the rotating portions can mutually cooperate to realize that the driving arm 23 carries out a plurality of direction adjustment, so that the driving arm 23 rotates more flexibly.

Preferably, the first rotating portion 24 includes a rotating block 241 and a first rotation driving device provided on the device body 21, the rotating block 241 being connected to the first rotation driving device, the first rotation driving device driving the rotating block 241 to rotate. With the above structure, the drive arm 23 is enabled to rotate around the axis direction of the rotating block 241.

More preferably, the first rotation driving means includes a first motor 242, a first gear 243, and a second gear 244, the first motor 242 is provided inside the apparatus body 21, and a power output end of the first motor 242 protrudes outside the apparatus body 21, the power output end of the first motor 242 is connected to the first gear 243, the second gear 244 is connected to the rotating block 241, and the second gear 244 is rotatably connected to the apparatus body 21, and the second gear 244 is engaged with the first gear 243.

Preferably, the second rotating part 25 includes a first arm 251 and a second rotating driving device, the first arm 251 is rotatably connected with the rotating block 241, the second rotating driving device is disposed on the rotating block 241, and a power output end of the second rotating driving device is connected with the first arm 251. With the above structure, the second rotation driving device can drive the first arm 251 to rotate relative to the rotating block 241.

More preferably, the second rotation driving device includes a second motor 252 and a first rotating shaft 253, the second motor 252 is disposed on the rotating block 241, the first arm 251 is connected with the first rotating shaft 253 through a spline, the rotating block 241 has a first yielding groove 2411, two ends of the first rotating shaft 253 are respectively connected with a side wall of the first yielding groove 2411 in a rotating manner, and a power output end of the second motor 252 is connected with the first rotating shaft 253.

Preferably, the third rotating portion 26 includes a second arm 261 and a third rotation driving device, the second arm 261 is rotatably connected with the first arm 251, the third rotation driving device is disposed on the first arm 251, and a power output end of the third rotation driving device is connected with the second arm 261. With the above structure, the third rotation driving device can drive the second arm 261 to rotate relative to the first arm 251.

More preferably, the third rotation driving device includes a third motor 262 and a second rotating shaft 263, the third motor 262 is disposed on the first arm lever 251, the second arm lever 261 is connected with the second rotating shaft 263 through a spline, the first arm lever 251 has a second yielding groove 2511, two ends of the second rotating shaft 263 are respectively connected with a side wall of the second yielding groove 2511 in a rotating manner, and a power output end of the third motor 262 is connected with the second rotating shaft 263.

Preferably, the fourth rotating portion 27 includes a third arm 271 and a fourth rotation driving device, the third arm 271 is rotatably connected to the second arm 261, the fourth rotation driving device is provided on the third arm 271, and a power output end of the third rotation driving device is connected to the second arm 261. With the above configuration, the fourth rotation driving device is enabled to drive the third arm 271 to rotate with respect to the second arm 261.

More preferably, the fourth rotation driving device includes a fourth motor 272 and a third rotating shaft 273, the fourth motor 272 is disposed on the third arm lever 271, the third rotating shaft 273 is connected with the second arm lever 261 through a spline, the third arm lever 271 has a third abdicating groove 2711, two ends of the third rotating shaft 273 are respectively connected with a side wall of the third abdicating groove 2711 in a rotating manner, and a power output end of the fourth motor 272 is connected with the third rotating shaft 273.

Preferably, the third arm 271 is provided with an impact bump 28 on a section of a side remote from the second arm 261. With this structure, the impact bump 28 can crush the window glass of the fire floor, so that the driving arm 23 can extend into the floor to extinguish the fire.

Preferably, the upper end of the bump 28 has rounded corners. With this structure, the impact force of the impact bump 28 is enhanced, so that the impact bump 28 breaks glass more rapidly, and valuable fire extinguishing time is strived for.

Preferably, a plugging device for plugging the water outlet through hole 11 is arranged in the guide pipeline 1, the plugging device comprises a plugging head 31, a return spring 32 and two guide rods 33, the return spring 32 is horizontally arranged along the axial direction of the water outlet through hole 11, one end of the return spring 32 is connected with the inner side wall of the guide pipeline 1, the other end of the return spring is propped against the plugging head 31, and in general, the return spring 32 can prop against the plugging head 31 to plug the water outlet through hole 11, so that the water outlet through hole 11 is prevented from leaking; in case of fire, the fire extinguishing apparatus 2 is lifted to the corresponding water outlet hole 11, and the blocking head 31 is pushed into the guide pipe 1, so that water can flow out from the water outlet hole 11. Two guide rods 33 are respectively arranged on two sides of the return spring 32, and the plugging head 31 is provided with guide holes for the guide rods 33 to pass through, so that the plugging head 31 can be more stable in the horizontal movement process and the plugging head 31 can be more firmly matched with the water outlet through hole 11.

Preferably, the fire extinguishing device 2 is provided with a propping device for propping the blocking head 31, the propping device comprises a propping head 41 and a horizontal driving device 42, the propping head 41 is arranged in the water inlet 212, the horizontal driving device 42 is arranged in the device main body 21, the power output end of the horizontal driving device 42 extends into the water inlet 212, and the horizontal driving device drives the propping head 41 to horizontally move along the axial direction of the water inlet 212. With the above structure, when fire is extinguished, the fire extinguishing mechanism moves to the corresponding water outlet through hole 11, the water inlet hole 212 aligns with the water outlet through hole 11, and then the horizontal driving device 42 drives the propping head 41 to move towards the plugging head 31, and the plugging head 31 is propped against the inside of the guide pipeline 1, so that water can enter the water inlet hole 212 from the water inlet through hole.

More preferably, in order to enable the water to enter the water inlet 212 faster through the propping head 41, the propping head 41 comprises a propping head main body, a plurality of water through holes 411 are formed in the propping head main body, a plurality of protruding propping teeth 412 are formed in the end face of one side, close to the guide pipeline 1, of the propping head main body, the propping teeth 412 are used for propping the outer side face of the blocking head 31, a water outlet gap 413 is formed between the propping teeth 412, and water can sequentially pass through the propping head 41 through the water outlet gap 413 and the barrel water holes, so that the water can enter the water inlet 212 rapidly.

More preferably, in the present embodiment, the horizontal driving device 42 is an air cylinder, and a piston rod of the air cylinder is connected to the abutment 41. The cylinder is adopted for driving, so that the cost is lower, and the maintenance and the replacement are convenient.

Preferably, in the present embodiment, the lifting driving device includes a tooth row 51 disposed at both sides of the guide duct 1, a third gear 52 engaged with the tooth row 51, and a fifth rotation driving device for driving the third gear 52 to rotate, wherein the third gear 52 is rotatably connected with the device main body 21, and the fifth rotation driving device is disposed on the device main body 21. By adopting the structure, the fire extinguishing device 2 is driven to move up and down through the meshing of the gears and the gear rows 51, so that the accuracy of the lifting movement of the fire extinguishing device 2 can be improved, the water inlet hole 212 can be aligned with the water outlet through hole 11 accurately, and the fire extinguishing device 2 can be matched with the water outlet through hole 11 rapidly.

More preferably, the device body 21 has mounting portions 214 extending outward on both sides, the mounting portions 214 are provided with mounting grooves 215, and the third gear 52 is disposed in the mounting grooves 215. With this structure, the third gear 52 is protected from being knocked and damaged by the third gear 52.

More preferably, the fifth rotation driving means includes a fourth rotation shaft 53, a fourth gear 54, a fifth gear 55, and a fifth motor 56; the fourth rotating shaft 53 is rotatably connected with the side wall of the mounting part 214, and the fourth gear 54 and the third gear 52 are respectively connected with two ends of the fourth rotating shaft 53; the device main body 21 is provided with a mounting plate 216, the fifth motor 56 is arranged on the mounting plate 216, the power output end of the fifth motor 56 is connected with a fifth gear 55, and the fifth gear 55 is meshed with the fourth gear 54. After the above structure is adopted, the fifth motor 56 drives the fifth gear 55 to rotate, so that the fifth gear 55 drives the fourth gear 54 to rotate, and the third gear 52 is driven to rotate.

Preferably, the guide pipeline 1 is correspondingly provided with a water outlet through hole 11 at each floor level, so that the guide pipeline 1 is convenient for supplying water for the fire extinguishing device 2.

Preferably, the system also comprises a control system, wherein the control system comprises a temperature sensing device, and the guide pipeline 1 is correspondingly provided with a temperature sensing device at each floor level. By adopting the structure, the temperature sensing device can find the fire floor through high-temperature sensing at the first time, signals are transmitted to the control system, the control system gives an alarm and automatically dials a fire alarm, and then the control system controls the lifting driving device to drive the fire extinguishing device 2 to the fire floor for extinguishing fire, so that automatic fire extinguishing and safety early warning functions are realized, the safety protection performance of the floor is greatly improved, and the personal and property safety of high-rise households is further ensured.

The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.

Claims

1. The intelligent public security system is characterized by comprising a guide pipeline, a fire extinguishing device arranged on the guide pipeline and a lifting driving device for driving the fire extinguishing device to move up and down along the guide pipeline, wherein a water outlet through hole communicated with the fire extinguishing device is formed in the guide pipeline; the sealing device comprises a sealing plug, a reset spring and two guide rods, wherein the reset spring is horizontally arranged along the axial direction of the water outlet through hole, one end of the reset spring is connected with the inner side wall of the guide pipeline, the other end of the reset spring is propped against the sealing plug, the two guide rods are respectively arranged on two sides of the reset spring, and the sealing plug is provided with a guide hole for the guide rods to pass through in a matched mode; the fire extinguishing device is provided with a propping device for propping the blocking head, the propping device comprises a propping head and a horizontal driving device, the propping head is arranged in the water inlet, the horizontal driving device is arranged on the device main body, and the horizontal driving device drives the propping head to horizontally move along the axis direction of the water inlet; the propping head comprises a propping head main body, a plurality of water holes are formed in the propping head main body, a plurality of protruding propping teeth are formed in the end face of one side, close to the guide pipeline, of the propping head main body, and water outlet gaps are formed between the propping teeth; the horizontal driving device is an air cylinder, and a piston rod of the air cylinder is connected with the propping head; the fire extinguishing device comprises a device main body, a water outlet pipe and a driving arm; the device body is provided with a connecting hole part matched with the guide pipeline, and is also provided with a water inlet hole and a water outlet hole which are mutually communicated, the water inlet hole is communicated with the water outlet through hole, one end of the water outlet pipe is connected with the water outlet hole, and the other end of the water outlet pipe is connected with the driving arm.

2. The intelligent public security system of claim 1, wherein the drive arm comprises a first rotating portion, a second rotating portion, a third rotating portion, and a fourth rotating portion connected in sequence.

3. The intelligent public security system of claim 2, wherein the first rotating part comprises a rotating block and a first rotating driving device, the first rotating driving device is arranged on the device main body, the rotating block is connected with the first rotating driving device, and the first rotating driving device drives the rotating block to rotate.

4. The intelligent public security system of claim 3, wherein the first rotary driving device comprises a first motor, a first gear and a second gear, the first motor is arranged on the device main body, the power output end of the first motor is connected with the first gear, the second gear is connected with the rotating block, the second gear is connected with the device main body in a rotary mode, and the second gear and the first gear are meshed with each other.

5. The intelligent public security system of claim 3, wherein the second rotating part comprises a first arm rod and a second rotating driving device, the first arm rod is rotationally connected with the rotating block, the second rotating driving device is arranged on the rotating block, and the power output end of the second rotating driving device is connected with the first arm rod.

6. The intelligent public security system of claim 5, wherein the second rotation driving device comprises a second motor and a first rotating shaft, the second motor is arranged on a rotating block, the first arm rod is connected with the first rotating shaft through a spline, the rotating block is provided with a first abdication groove, two ends of the first rotating shaft are respectively connected with the side wall of the first abdication groove in a rotating way, and the power output end of the second motor is connected with the first rotating shaft.

7. The intelligent public security system of claim 5, wherein the third rotating portion comprises a second arm and a third rotating driving device, the second arm is rotatably connected with the first arm, the third rotating driving device is arranged on the first arm, and the power output end of the third rotating driving device is connected with the second arm.

8. The intelligent public security system of claim 7, wherein the third rotation driving device comprises a third motor and a second rotating shaft, the third motor is arranged on the first arm rod, the second arm rod is connected with the second rotating shaft through a spline, the first arm rod is provided with a second abdicating groove, two ends of the second rotating shaft are respectively connected with the side wall of the second abdicating groove in a rotating way, and the power output end of the third motor is connected with the second rotating shaft.

9. The intelligent public security system of claim 7, wherein the fourth rotating portion comprises a third arm and a fourth rotating driving device, the third arm is rotatably connected with the second arm, the fourth rotating driving device is arranged on the third arm, and the power output end of the third rotating driving device is connected with the second arm.