Photoelectric turntable

Abstract

The utility model discloses a photoelectric rotary table, and belongs to the field of photoelectric rotary tables. The photoelectric rotary table comprises a shell, a pitching frame, an azimuth seat and a heat dissipation module, the shell forms a load cabin with one open end; the pitching frame comprises a connecting part and two supporting arms oppositely arranged at the two ends of the connecting part. The output end of the azimuth seat is connected with the pitching frame so as to drive the pitching frame to rotate around the axis of the second direction; the heat dissipation module comprises a heat dissipation device and a fan, the heat dissipation device comprises a substrate and a plurality of heat dissipation fins, the substrate is arranged at the open end of the shell and used for sealing the load cabin, and the heat dissipation fins are arranged on the outer side wall of the substrate at intervals; the connecting part is provided with a threading groove and a cover plate. The photoelectric sensing device in the load cabin can be effectively cooled under the condition that the load cabin is sealed, and meanwhile storage and wiring of connecting cables between the mounting cabin and the load cabin are facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of photoelectric turntables, and in particular, relates to a photoelectric turntable. Background Art

[0002] At present, the optoelectronic turntable has been widely used in border monitoring, high-altitude observation, automatic target tracking and forest fire monitoring systems due to its small drag coefficient, strong wind resistance, stable servo performance, high operating accuracy, and good monitoring and tracking performance in harsh environments. With the rapid development of optoelectronic turntables, their functions are becoming more and more diverse. As more and more functions are integrated, there are more and more corresponding heating devices. Long-term operation will cause the internal heating devices to generate more and more heat. Excessive temperature will affect the performance of the electronic devices inside the optoelectronic turntable. In severe cases, it will cause the optoelectronic turntable to fail to work normally. At the same time, due to the increasing number of electronic devices, the wiring difficulty of the electrical connection cables between the various electronic devices in the optoelectronic turntable has increased, and it needs to be improved. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an optoelectronic turntable, which can effectively dissipate heat for the optoelectronic sensor device inside the load compartment when the load compartment is sealed, and facilitates the storage and wiring of the connecting cables between the installation compartment and the load compartment.

[0004] The present application provides an optoelectronic turntable, comprising:

[0005] A housing, wherein the housing forms a load compartment with one end open, and the load compartment is used to install a photoelectric sensor device;

[0006] A pitch frame, the pitch frame comprising a connecting portion and two supporting arms arranged opposite to two ends of the connecting portion, the two supporting arms being arranged at opposite sides of the housing along a first direction and being rotatably connected to the housing;

[0007] An azimuth seat, wherein an output end of the azimuth seat is connected to the connecting portion to drive the pitch frame to rotate around an axis in a second direction, and an installation cabin for installing electronic devices is provided in the azimuth seat;

[0008] A heat dissipation module, the heat dissipation module comprises a heat sink and a fan, the heat sink comprises a base plate and a plurality of heat dissipation fins, the base plate is arranged at the open end of the shell, the base plate is used to close the load compartment, the plurality of heat dissipation fins are arranged at intervals on the outer side wall of the base plate; the fan is connected to the plurality of heat dissipation fins;

[0009] Wherein, the connecting part is provided with a wire threading groove and a cover plate, the wire threading groove is recessed in the upper surface of the connecting part and the notch of the wire threading groove faces the shell, and the wire threading groove is suitable for being connected with the installation cabin of the azimuth seat; the connecting part and the support arm are provided with a wire threading channel, one end of the wire threading channel is connected with the wire threading groove, and the other end passes through the connecting part and the support arm in sequence to be connected with the load cabin; the cover plate is detachably arranged on the notch of the wire threading groove.

[0010] According to the photoelectric turntable provided in the embodiment of the present application, on the one hand, by setting a substrate and heat dissipation fins, the substrate and the shell define a sealed load compartment, and the photoelectric sensor device is arranged in the waterproof and dustproof load compartment, which can extend the service life and increase the working stability, so that the photoelectric turntable can work normally in a harsh environment of high humidity and high dust, thereby increasing the working scenarios of the photoelectric turntable; at the same time, the cooperation of the substrate, the fins and the fan can make the inner wall of the substrate located inside the load compartment and the outer wall of the substrate located outside have a temperature difference, thereby transferring the heat inside the load compartment to the outside, realizing effective heat dissipation of the photoelectric sensor device inside the load compartment when the load compartment is sealed, and the structure is simple and reliable, and the cost is low. On the other hand, a wire threading groove is provided on the connecting part, a wire threading channel is provided on the connecting part and the supporting arm, the wire threading channel is connected with the wire threading groove, and the wire threading groove is connected with the installation cabin of the azimuth seat, thereby realizing the storage and wiring of connecting cables between the installation cabin and the load cabin, and the cables can enter the load cabin through the wire threading groove and the wire threading channel in turn, realizing the classified threading of the cables, and at the same time increasing the neatness and aesthetics of the cables; by providing a cover plate, the cover plate can be connected to the wire threading groove after the threading is completed, so as to achieve the effect of concealing ugliness, and at the same time play a sealing role for the wire threading groove, reduce water and dust from entering the load cabin and the installation cabin through the wire threading groove, protect the cables and electronic devices in the optoelectronic turntable, and increase the application scenarios of the optoelectronic turntable.

[0011] According to an embodiment of the present application, the plurality of heat dissipating fins include a plurality of first fins, the first fins are formed with avoidance notches, the plurality of avoidance notches on the plurality of first fins are aligned to form avoidance grooves, and the avoidance grooves are open at both ends along the arrangement direction of the plurality of first fins;

[0012] The fan is installed in the avoidance groove, and the fan is communicated with the heat dissipation duct between two adjacent first fins.

[0013] According to an embodiment of the present application, the first fin includes a first part and a second part, the second part is relatively arranged on both sides of the first part along the width direction of the first part, and the height of the second part decreases from close to the first part to far away from the first part; the avoidance gap is located in the first part, and the height of the avoidance gap is less than the height of the first part; and / or,

[0014] The fan is connected to at least two heat dissipation fins among the plurality of heat dissipation fins.

[0015] According to an embodiment of the present application, the plurality of heat dissipation fins further include a plurality of second fins, and the plurality of second fins are respectively arranged at the open ends of the avoidance grooves.

[0016] According to an embodiment of the present application, two second fins located on both sides of the open end of the avoidance groove among the plurality of second fins are flush with the groove top of the avoidance groove;

[0017] And / or, the heights of the plurality of second fins decrease in sequence from close to the avoidance groove to far away from the avoidance groove.

[0018] According to one embodiment of the present application, the fan includes a casing, an impeller and a waterproof motor, the two ends of the casing are open and one end is connected to the multiple heat dissipation fins, the impeller and the waterproof motor are arranged in the casing, and the output end of the waterproof motor is coupled to the impeller.

[0019] According to an embodiment of the present application, the threading groove includes a first groove body and a second groove body which are coaxially arranged and connected, the outer diameter of the first groove body is larger than the outer diameter of the second groove body, the first groove body is arranged close to the housing, and the cover plate is arranged on the first groove body;

[0020] A sealing member is sandwiched between the first tank body and the cover plate.

[0021] According to an embodiment of the present application, the cover plate is provided with an operation groove, the groove opening of the operation groove faces the housing, and the groove bottom of the operation groove is a curved surface; and / or,

[0022] The wire threading groove is provided with a through hole, which is connected to the installation cabin; the wire threading channel includes a first wire threading hole and a second wire threading hole, the first wire threading hole passes through the connecting part and one of the two support arms in sequence to be connected to the load cabin, and the second wire threading hole passes through the connecting part and the other of the two support arms in sequence to be connected to the load cabin.

[0023] According to one embodiment of the present application, the azimuth seat comprises: a shell, a conductive slip ring and a drive motor, the shell defines the installation cabin, the conductive slip ring and the drive motor are installed in the installation cabin, and the connecting portion is coupled to the drive motor through the conductive slip ring;

[0024] The shell portion is clearance-matched with the connecting portion.

[0025] According to an embodiment of the present application, a matching groove is provided on the bottom wall of the connecting portion, and the notch of the matching groove faces the orientation seat; a plurality of protrusions are provided on the outer edge of the shell portion at intervals, and the plurality of protrusions extend around the circumference of the shell portion, and the protruding heights of the plurality of protrusions relative to the outer wall of the shell portion gradually increase from top to bottom along the height direction of the shell portion; the plurality of protrusions are clearance-matched with the groove wall of the matching groove; and / or,

[0026] The movable ends of the conductive slip rings are respectively connected to the connecting parts, and the fixed ends of the conductive slip rings are suitable for being electrically connected to the control module.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is one of the structural schematic diagrams of the photoelectric turntable provided in the embodiment of the present application;

[0030] Figure 2 This is the second structural schematic diagram of the photoelectric turntable provided in the embodiment of the present application;

[0031] Figure 3 This is one of the structural schematic diagrams of the heat dissipation module provided in the embodiment of the present application;

[0032] Figure 4 This is the second structural schematic diagram of the heat dissipation module provided in the embodiment of the present application;

[0033] Figure 5 It is one of the structural schematic diagrams of the radiator provided in the embodiment of the present application;

[0034] Figure 6 This is the second structural schematic diagram of the radiator provided in the embodiment of the present application;

[0035] Figure 7 is a structural schematic diagram of a fan provided in an embodiment of the present application;

[0036] Figure 8 It is one of the structural schematic diagrams of the pitch frame provided in the embodiment of the present application;

[0037] Fig. 9 This is the second structural schematic diagram of the pitch frame provided in the embodiment of the present application;

[0038] Fig.10 This is the third structural schematic diagram of the pitch frame provided in the embodiment of the present application;

[0039] Fig.11 This is the third structural schematic diagram of the photoelectric turntable provided in the embodiment of the present application;

[0040] Fig.12 It is a schematic diagram of the structure of the cover plate provided in an embodiment of the present application.

[0041] Reference numerals:

[0042] Shell 1, pitch frame 2, support arm 21, connection part 22, threading groove 221, first groove body 2211, second groove body 2212; cover plate 222, operation groove 2221, through hole 2222; threading channel 223, matching groove 224; azimuth seat 3, shell part 31, protrusion 311, conductive slip ring 32, plug-in part 33;

[0043] Heat dissipation module 4, radiator 41, substrate 411, heat dissipation fins 412, first fins 4121, first part 41211, second part 41212, avoidance groove 4122, first mounting structure 4123, second fins 4124; fan 42, housing 421, waterproof motor 422. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0045] Reference below Figure 1-Figure 12 The optoelectronic turntable according to the embodiment of the present application is described. The optoelectronic turntable includes: a housing 1 , a pitch frame 2 , an azimuth seat 3 and a heat dissipation module 4 .

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, the shell 1 forms a load compartment with one end open, and the load compartment is used to install the photoelectric sensor device; the pitch frame 2 includes a connecting portion 22 and two support arms 21 arranged opposite to the two ends of the connecting portion 22, and the two support arms 21 are arranged on opposite sides of the shell 1 along a first direction and are rotatably connected to the shell 1; the output end of the azimuth seat 3 is connected to the pitch frame 2 to drive the pitch frame 2 to rotate around the axis of the second direction, and the azimuth seat 3 is provided with an installation compartment for installing electronic devices; the heat dissipation module 4 includes a radiator 41 and a fan 42, the radiator 41 includes a substrate 411 and a plurality of heat dissipation fins 412, the substrate 411 is arranged at the open end of the shell 1, the substrate 411 is used to close the load compartment, and the plurality of heat dissipation fins 412 are arranged at intervals on the outer wall of the substrate 411; the fan 42 is connected to the plurality of heat dissipation fins 412.

[0047] The connection part 22 of the pitch frame 2 is used for fixed connection with the two support arms 21, and is coupled and connected with the output end of the azimuth seat 3. The connection part 22 is provided with a threading groove 221 and a cover plate 222. The threading groove 221 is recessed in the upper surface of the connection part 22 and the notch of the threading groove 221 faces the housing 1. The threading groove 221 is suitable for communicating with the installation cabin of the azimuth seat 3; the connection part 22 and the support arm 21 are provided with a threading channel 223, one end of the threading channel 223 is communicated with the threading groove 221, and the other end passes through the connection part 22 and the support arm 21 in sequence to communicate with the load cabin; the cover plate 222 is detachably arranged at the notch of the threading groove 221.

[0048] The photoelectric sensor device includes a laser illuminator, a laser rangefinder, a visible light camera, an infrared camera and other devices that use the photoelectric effect to convert signals, which can be assembled according to the application scenario of the photoelectric turntable. The photoelectric sensor device is integrated in the load compartment of the housing 1, and the housing 1 can protect and fix the photoelectric sensor device.

[0049] The pitch frame 2 may be a U-shaped frame, and two support arms 21 of the pitch frame 2 are disposed on opposite sides of the housing 1 . The housing 1 may rotate around a rotation axis in a first direction to adjust the pitch angle of the housing 1 .

[0050] The pitch frame 2 may include a servo control board, a pitch motor, a resolver and other devices.

[0051] like Figure 2 As shown, the azimuth seat 3 has the functions of supporting the pitch frame 2 and azimuth rotation, the output end of the azimuth seat 3 can rotate around the axis of the second direction, the output end of the azimuth seat 3 is coupled with the pitch frame 2, and the pitch frame 2 rotates around the axis of the second direction, so that the shell 1 has the freedom to rotate around the axis of the second direction.

[0052] The electronic components in the azimuth seat 3 may include azimuth motors, resolvers, slip rings, power modules, filters and other devices.

[0053] The first direction intersects with the second direction, the first direction may be perpendicular to the second direction, the first direction may be a horizontal direction, and the second direction may be a vertical direction.

[0054] The heat sink 41 includes a substrate 411 and heat dissipation fins 412. The substrate 411 is used to seal the load compartment, and the substrate 411 is used to exchange heat with the photoelectric sensor device and air in the load compartment. The substrate 411 and the housing 1 together define a sealed load compartment, which can play a waterproof and dustproof sealing role to protect the photoelectric sensor device inside the load compartment.

[0055] The heat dissipation fins 412 are connected to the outer wall of the substrate 411. The heat dissipation fins 412 increase the heat dissipation area of ​​the outer wall of the substrate 411, thereby strengthening the heat transfer between the outer wall of the substrate 411 and the outside air, so that there is a temperature difference between the inner wall of the substrate 411 located inside the load compartment and the outer wall of the substrate 411 located outside, thereby continuously transferring the heat inside the load compartment to the outside, thereby realizing the heat dissipation of the photoelectric sensor device inside the load compartment when the load compartment is sealed.

[0056] The heat dissipation fins 412 may be solid fins or hollow fins. The heat dissipation fins 412 may be spaced apart and distributed along the extension direction of the substrate 411. The heat dissipation fins 412 and the substrate 411 may be connected by integral molding, welding, clamping, or plug-in connection. The heat dissipation fins 412 are connected to the substrate 411, and the heat dissipation fins 412 may help dissipate more heat into the air by increasing the heat dissipation surface area.

[0057] The substrate 411 can be connected to the open end of the housing 1 by one or more connection methods such as threaded connection, plug-in connection and snap connection. The substrate 411 can be made of thermally conductive materials such as graphite plate, ceramic or metal plate, and the heat dissipation fins 412 can be made of metal materials, such as steel strip, stainless steel strip or copper strip.

[0058] A heat dissipation duct is formed between two adjacent heat dissipation fins 412 among the multiple heat dissipation fins 412, and the fan 42 is connected to at least one or more of the multiple heat dissipation fins 412. The fan 42 is used to accelerate the flow rate of the gas in at least one heat dissipation duct, thereby accelerating the heat dissipation of the outer wall of the substrate 411 located outside, increasing the temperature difference between the inner wall of the substrate 411 and the outer wall of the substrate 411, thereby accelerating the heat exchange with the photoelectric sensor device inside the payload cabin.

[0059] Among them, the fan 42 can be arranged on the outside of multiple heat dissipation fins 412 and connected to the end of at least one heat dissipation fin 412, or it can be fully or partially embedded in multiple heat dissipation fins 412, both of which can accelerate the gas in the heat dissipation duct between adjacent heat dissipation fins 412.

[0060] The electronic components in the azimuth seat 3 may include azimuth motors, resolvers, slip rings, power modules, filters and other devices.

[0061] A portion of the threading channel 223 is located at the connecting portion 22 , and another portion of the threading channel 223 is located at the supporting arm 21 .

[0062] The threading groove 221 is recessed in the upper surface of the connecting portion 22, and the notch of the threading groove 221 faces the housing 1. The threading groove 221 is designed to facilitate the arrangement and passage of cables. The threading groove 221 is connected to the installation cabin of the azimuth seat 3, so that the cables can pass through the threading groove 221 into the installation cabin.

[0063] The wire passage 223 is a passage connecting the wire groove 221 and the load compartment. The cables can enter from the wire groove 221, and then pass through the connecting portion 22 and the support arm 21 in sequence through the wire passage 223, and finally reach the load compartment. Such a design makes the arrangement of the cables convenient and neat.

[0064] The cover plate 222 is detachably connected to the azimuth seat 3, and the cover plate 222 is arranged at the notch of the threading groove 221. The function of the cover plate 222 is mainly to protect the cables in the threading groove 221 from external interference or damage. When the cables need to be arranged or repaired, the cover plate 222 can be removed for operation.

[0065] Among them, one or more threading channels 223 can be set. When multiple threading channels 223 are set, a threading channel 223 can be set in each support arm 21. The nearest threading channel 223 can be selected for wiring according to the position of the photoelectric sensor device in the payload compartment, thereby shortening the cable length, reducing costs, and reducing the difficulty of threading.

[0066] In the related art, in order to achieve the heat dissipation of electronic devices in the load compartment, a plurality of heat dissipation windows are usually provided to connect the load compartment with the outside world, so as to achieve gas flow and heat dissipation of the electronic devices. The ventilation area of ​​the heat dissipation window is proportional to the heat dissipation effect, but water and debris from the outside world will enter the load compartment from the heat dissipation window, affecting the normal operation of the load compartment; some devices that do not have heat dissipation windows but need to meet the heat dissipation requirements will use liquid cooling coils to contact the air in the electronic device or load compartment to achieve heat dissipation, but the liquid cooling device has a complex structure, high cost, and a high risk of failure of the electronic device due to leakage of the heat exchange medium. In addition, with the rapid development of the optoelectronic turntable, its functions are becoming more and more diversified. As more and more integrated functions are added, the types of corresponding electronic devices are also increasing. Electronic devices such as various optoelectronic sensor devices are generally located in the load compartment of the shell, and electronic devices such as power supplies and controllers are generally located in the installation compartment of the azimuth seat. Multiple cables need to pass through the pitch bracket from the installation compartment of the azimuth seat into the load compartment of the shell, and the wiring difficulty of the connecting wires between the electronic devices in the optoelectronic turntable and the connecting wires between the electronic devices and the power supply is increased.

[0067] According to the photoelectric turntable provided in the embodiment of the present application, on the one hand, by setting a substrate 411 and a heat dissipation fin 412, the substrate 411 and the shell 1 define a sealed load compartment, and the photoelectric sensor device is arranged in the sealed waterproof and dustproof load compartment, which can extend the service life of the photoelectric sensor device and increase its working stability, so that the photoelectric turntable can work normally in a harsh environment with high humidity and high dust, thereby increasing the working scenarios of the photoelectric turntable; at the same time, the cooperation of the substrate 411, the heat dissipation fin 412 and the fan 42 can make the inner wall of the substrate 411 located inside the load compartment and the outer wall of the substrate 411 located outside have a temperature difference, thereby transferring the heat inside the load compartment to the outside, realizing effective heat dissipation of the photoelectric sensor device inside the load compartment when the load compartment is sealed, and the structure is simple and reliable, and the cost is low. On the other hand, by providing a wire threading groove 221 on the connecting part 22, and providing a wire threading channel 223 on the connecting part 22 and the support arm 21, the wire threading channel 223 is connected with the wire threading groove 221, and the wire threading groove 221 is connected with the installation cabin of the orientation seat 3, thereby realizing the storage and wiring of connecting cables between the installation cabin and the load cabin, and the cables can pass through the wire threading groove 221 and the wire threading channel 223 in turn to enter the load cabin, thereby realizing the classified threading of the cables, and at the same time increasing the neatness and aesthetics of the cables; by providing a cover plate 222, the cover plate 222 can be connected to the wire threading groove 221 after the threading is completed, thereby realizing the effect of concealing ugliness, and at the same time sealing the wire threading groove 221, thereby reducing water and dust from entering the load cabin and the installation cabin through the wire threading groove 221, thereby protecting the cables and electronic devices in the optoelectronic turntable, and increasing the application scenarios of the optoelectronic turntable.

[0068] The optoelectronic turntable provided in the embodiment of the present application can achieve effective heat dissipation of the optoelectronic sensor device inside the load compartment while the load compartment is sealed by providing a heat dissipation module, a wire threading groove 221 and a cover plate 222. The structure is simple and reliable, and the storage and wiring of connecting cables between the installation compartment and the load compartment can be achieved. The cables can pass through the wire threading groove 221 and the wire threading channel 223 in turn to enter the load compartment, thereby achieving classified threading of the cables and increasing the neatness and aesthetics of the cables.

[0069] In some embodiments, Figure 5 As shown, the multiple heat dissipation fins 412 include multiple first fins 4121, and avoidance notches are formed on the first fins 4121. The multiple avoidance notches on the multiple first fins 4121 are aligned to form avoidance grooves 4122, and the avoidance grooves 4122 are open at both ends along the arrangement direction of the multiple first fins 4121; the fan 42 is installed in the avoidance groove 4122, and the fan 42 is connected to the heat dissipation air duct between two adjacent first fins 4121.

[0070] In this embodiment, the fan 42 may be fully or partially embedded in the plurality of heat dissipation fins 412 , and may accelerate the airflow in the plurality of heat dissipation air ducts in the plurality of heat dissipation fins 412 , thereby further enhancing the heat dissipation effect.

[0071] Part of the heat dissipation fins 412 among the plurality of heat dissipation fins 412 are first fins 4121 , or all of the plurality of heat dissipation fins 412 are first fins 4121 .

[0072] The avoidance gap can be set at the end of the first fin 4121 along the length direction of the first fin 4121, and the avoidance gap can also be set between the two ends of the first fin 4121. The groove walls of multiple avoidance gaps on multiple first fins 4121 are aligned to form a avoidance groove 4122, and the heat dissipation duct formed between two adjacent first fins 4121 is connected to the avoidance groove 4122.

[0073] The fan 42 is partially or completely embedded in the avoidance groove 4122. The fan 42 can extract the gas in the heat dissipation duct connected to the avoidance groove 4122 or blow the external gas into the heat dissipation duct to accelerate the flow rate of the gas in the heat dissipation duct, thereby accelerating the heat dissipation of the outer wall of the substrate 411 and increasing the heat dissipation effect of the load compartment.

[0074] In some embodiments, Figure 5 As shown, the first fin 4121 includes a first part 41211 and a second part 41212, and the second part 41212 is relatively arranged on both sides of the first part 41211 along the width direction of the first part 41211, and the height of the second part 41212 decreases along the direction from close to the first part 41211 to far away from the first part 41211; the avoidance notch is located in the first part 41211, and the height of the avoidance notch is less than the height of the first part 41211.

[0075] The first fin 4121 is trapezoidal, and the bottom of the first fin 4121 is connected to the outer wall of the base plate 411. The avoidance gap is located between the two waists of the first fin 4121, and the fan 42 is located between the two ends of the heat dissipation duct, which can increase the flow rate of the airflow in the heat dissipation duct and further enhance the heat dissipation effect.

[0076] The height of the avoidance gap is smaller than the height of the first part 41211, that is, at least part of the first fins 4121 are arranged between the fan 42 and the outer wall of the substrate 411, and at least two adjacent ones of the first fins 4121 form a heat dissipation duct, and the heat dissipation duct formed between the two adjacent first parts 41211 is connected to the heat dissipation duct formed between the two adjacent second parts 41212, thereby reducing the influence of installing the fan 42 on the heat dissipation area of ​​the outer wall of the substrate 411.

[0077] In this embodiment, if Figure 5As shown, the two ends of the first fin 4121 are inclined to reduce the external volume of the photoelectric turntable, and the avoidance gap is set in the first part 41211. The avoidance gap can provide thickness compensation for the fan 42, reduce the height of the fan 42 protruding from the outer surface of the whole machine, and facilitate the movement of the photoelectric turntable.

[0078] In some embodiments, the fan 42 is connected to at least two of the multiple heat sinks 412. For example, the fan 42 can be connected to two, three, or more heat sinks 412. Compared with the case where the fan 42 is connected to a single heat sink 412, the stability of the connection between the fan 42 and the radiator 41 can be increased.

[0079] The fan 42 may be threadedly connected to the heat dissipation fins 412 via bolts or screws, and the four sides of the bottom wall and / or side wall of the fan 42 may be respectively connected to one or more heat dissipation fins 412 .

[0080] Exemplarily, among the multiple heat dissipation fins 412, two heat dissipation fins 412 spaced apart at the upper and lower ends of the bottom wall of the fan 42 are threadedly connected to the bottom wall of the fan 42, and each heat dissipation fin 412 is provided with two spaced apart left and right connection points with the bottom wall of the fan 42; or, among the multiple heat dissipation fins 412, two heat dissipation fins 412 located at the upper end of the bottom wall of the fan 42 are threadedly connected to the upper end of the bottom wall of the fan 42, and two heat dissipation fins 412 located at the lower end of the bottom wall of the fan 42 are threadedly connected to the lower end of the bottom wall of the fan 42, thereby increasing the stability of the connection.

[0081] In some embodiments, Figure 5 As shown, two adjacent heat dissipation fins 412 among the plurality of heat dissipation fins 412 are connected to form at least two first mounting structures 4123 , and the at least two first mounting structures 4123 are connected to the fan 42 .

[0082] In this embodiment, two adjacent parallel heat dissipation fins 412 are bent and intersected at two positions to increase the area of ​​the positions, thereby increasing the area of ​​the connection between the heat dissipation fins 412 and the fan 42 and increasing the stability of the connection.

[0083] The at least two first mounting structures 4123 may include 2, 3 or more, and the first mounting structures 4123 may be distributed at the four corners of the avoidance groove 4122, or at the four corners and the center of the avoidance groove 4122. The multiple first mounting structures 4123 are arranged at intervals to have multiple connection points with the fan 42, and the stability of the connection can be increased through multi-point connection.

[0084] Exemplarily, the first mounting structure 4123 may be a threaded hole. Since the width of the heat sink fin 412 is relatively small and the area of ​​the connection point between two adjacent heat sink fins 412 is relatively large, a complete threaded hole may be formed, thereby achieving a threaded connection between the two and improving the reliability of the structure.

[0085] In some embodiments, Figure 5 As shown, the plurality of heat dissipation fins 412 further include a plurality of second fins 4124 , and the plurality of second fins 4124 are disposed at the open ends of the avoidance slots 4122 .

[0086] Among them, the avoidance groove 4122 is open at both ends along the arrangement direction of the multiple first fins 4121, and the multiple second fins 4124 are respectively arranged at the open ends of the avoidance groove 4122. The first fins 4121 and the second fins 4124 together form an avoidance groove 4122 with an open groove mouth and a closed groove bottom and groove wall. When the fan 42 is installed in the avoidance groove 4122, the groove wall of the avoidance groove 4122 can protect the side wall of the fan 42 located in the avoidance groove 4122.

[0087] Exemplarily, a portion of the plurality of second fins 4124 is located at the open end on one side of the avoidance groove 4122 along the arrangement direction of the plurality of first fins 4121 , and another portion of the plurality of second fins 4124 is located at the open end on the other side of the avoidance groove 4122 along the arrangement direction of the plurality of first fins 4121 .

[0088] In some embodiments, Figure 5 As shown, two second fins 4124 located on both sides of the open end of the avoidance groove 4122 among the plurality of second fins 4124 are flush with the groove top of the avoidance groove 4122 .

[0089] The two second fins 4124 located on both sides of the open end of the avoidance groove 4122 form the groove wall of the avoidance groove 4122. The two second fins 4124 located on both sides of the open end of the avoidance groove 4122 are flush with the groove top of the avoidance groove 4122, which can improve the aesthetics of the overall appearance of the machine, reduce the height of the second fins 4124 protruding from the outer surface of the whole machine, and facilitate the movement of the photoelectric turntable.

[0090] In some embodiments, Figure 5 As shown, the heights of the plurality of second fins 4124 decrease gradually along a direction from close to the avoidance groove 4122 to far away from the avoidance groove 4122 .

[0091] The heights of the plurality of second fins 4124 disposed at the open ends on both sides of the avoidance groove 4122 decrease in sequence from close to the avoidance groove 4122 to far away from the avoidance groove 4122 .

[0092] It should be noted that the spacing between the heat dissipation fins 412 and the height of the fins mainly affect the fin ratio, and the fin ratio has a great relationship with the heat transfer coefficient of the heat dissipation fins 412. Since there is no fan 42 between two adjacent second fins 4124 to drive the fluid to accelerate, the heights of the plurality of second fins 4124 are set to decrease in sequence from the direction close to the avoidance groove 4122 to the direction away from the avoidance groove 4122, and the plurality of second fins 4124 form a variable fin height array, and the heights of the plurality of heat dissipation air ducts decrease in sequence from the direction close to the avoidance groove 4122 to the direction away from the avoidance groove 4122, thereby increasing the convection of the gas, achieving the convective heat transfer effect, and achieving autonomous heat dissipation.

[0093] In some embodiments, Figure 5 and Figure 6 As shown, the end surface of the heat dissipation fin 412 along the length direction forms an acute angle with the outer side wall of the base plate 411.

[0094] In this embodiment, the heat dissipation fins 412 are trapezoidal. According to the principles of fluid dynamics, compared with the heat dissipation channels formed by the heat dissipation fins 412 with obtuse or right angles at both ends, the heat dissipation channels formed by the heat dissipation fins 412 with acute bottom angles at both ends are easier for gas to flow in and out, thereby increasing the convective heat transfer effect. As a result, the inner wall of the substrate 411 located inside the load compartment and the outer wall of the substrate 411 located outside have a larger temperature difference, thereby transferring the heat inside the load compartment to the outside, thereby achieving effective heat dissipation of the photoelectric sensor device inside the load compartment when the load compartment is sealed, with a simple and reliable structure and low cost.

[0095] The bottom angles of the two ends of the heat dissipation fin 412 may be the same or different, and may be set specifically according to the installation scenario.

[0096] In some embodiments, Figure 4 and Figure 7 As shown, the fan 42 includes a housing 421, an impeller and a waterproof motor 422. Both ends of the housing 421 are open and one end is connected to the bottom of the avoidance groove 4122. The impeller and the waterproof motor 422 are arranged in the housing 421, and the output end of the waterproof motor 422 is coupled to the impeller.

[0097] Among them, the shell 421 of the fan 42 is connected to the bottom of the avoidance groove 4122 and / or the groove wall of the avoidance groove 4122. The shell 421 of the fan 42 plays a role in protecting and fixing the impeller and the waterproof motor 422. Both ends of the shell 421 are open to facilitate the impeller to drive the airflow to draw the gas in the heat dissipation duct or blow the external gas into the heat dissipation duct.

[0098] The waterproof motor 422 is used to drive the impeller to rotate, and the waterproof fan 42 can be waterproof so that the photoelectric turntable can be fully waterproof and can be used underwater to improve the application scenarios.

[0099] In some embodiments, the photoelectric turntable also includes a controller and a temperature detection device. The controller is connected to the temperature detection device and the fan 42 respectively. The temperature detection device is arranged in the load compartment, and the temperature detection device is used to obtain the temperature in the load compartment; the controller is used to control the working mode of the fan 42 based on the temperature obtained by the temperature detection device, and the working mode of the fan 42 includes wind speed and direction.

[0100] In this embodiment, the wind speed of the fan is controlled based on the temperature in the load compartment. In a high temperature environment, the fan 42 is controlled to rotate at a high speed to increase the heat dissipation effect. In a low temperature or normal environment, the fan 42 is controlled to rotate at a low speed or not to rotate to reduce noise and energy consumption.

[0101] In some embodiments, the pitch frame 2 also includes an elastic limiting mechanism, which is used to limit the rotation angle of the shell 1 around the rotation axis in the first direction. For example, the elastic limiting mechanism can limit the movement range of the shell 1 around the rotation axis in the first direction within -20° to +60°.

[0102] In some embodiments, Figure 8 As shown, the two support arms 21 are rotatably connected to the housing 1 through a rotating shaft group, and a labyrinth seal structure and a mounting wire clamp hole are provided at the connection between the support arm 21 and the housing 1. Power cables, video cables, control cables and other cables enter the load compartment through the rotating shaft group, and corresponding mounting wire clamp holes are left on both sides of the pitch bracket. To ensure the airtightness of the load compartment, the rotating shaft group can be sealed with glue.

[0103] The installation wire clamp hole is an elastic part, and the connecting part is provided with a through hole. The diameter of the through hole is equal to or smaller than the total outer diameter of the cable electrically connecting the photoelectric sensor device and the electronic device, so that sealing can be achieved when the cable passes through.

[0104] Specifically, the support arm 21 includes a bracket and a rotating shaft group, the housing 1 is rotatably connected to the bracket through the rotating shaft group, the outer wall of the rotating shaft group is provided with a water guide groove, the bottom of the water guide groove includes a plurality of guide surfaces arranged in a bent manner, a water guide channel is formed between the bracket, the housing 1 and the plurality of guide surfaces, and the projection direction is perpendicular to the axis of the rotating shaft group, and the projection of the inlet of the water guide channel and the projection of the outlet of the water guide channel at least partially overlap to form a labyrinth seal, thereby enhancing the sealing, waterproof and dustproof effect. The rotating shaft group includes a motor shaft and a code disk shaft.

[0105] In some embodiments, the outer covers of the two support arms 21 are removable to facilitate threading and maintenance.

[0106] In some embodiments, the front cover and the rear cover of the housing 1 are detachably connected to facilitate replacement of electronic components such as photoelectric sensors in the load compartment.

[0107] In some embodiments, Fig. 9As shown, the wire threading groove 221 includes a first groove body 2211 and a second groove body 2212 which are coaxially arranged and connected. The outer diameter of the first groove body 2211 is larger than the outer diameter of the second groove body 2212. The first groove body 2211 is arranged close to the shell 1, and the cover plate 222 is arranged on the first groove body 2211; a sealing member is sandwiched between the groove bottom of the first groove body 2211 and the cover plate 222.

[0108] When the cover plate 222 is disposed in the first groove body 2211 , the cover plate 222 is protruding, recessed or flush with the upper surface of the cover plate 222 , and the first groove body 2211 plays a role in positioning the cover plate 222 .

[0109] Among them, the groove walls of the first groove body 2211 and the second groove body 2212 form a step shape, the side walls and part of the bottom wall of the first groove body 2211 form a step seal with the cover plate 222, and a sealing member is sandwiched between the groove bottom of the first groove body 2211 and the cover plate 222, which increases the sealing effect and reduces water and dust from entering the threading groove 221 through the gap between the first groove body 2211 and the cover plate 222.

[0110] The sealing member may be sandwiched between the bottom of the first slot body 2211 and the bottom wall of the cover plate 222, and / or the sealing member may be sandwiched between the slot wall of the first slot body 2211 and the side wall of the cover plate 222 to enhance the sealing effect.

[0111] In some embodiments, an annular groove is provided on the bottom of the first groove body 2211 and / or the bottom wall of the cover plate 222, and at least a portion of the sealing member is located in the annular groove.

[0112] The sealing member is sandwiched between the bottom of the first groove body 2211 and the bottom wall of the cover plate 222 , and the annular groove is used to position and fix the sealing member, thereby reducing deformation and movement of the sealing member.

[0113] Exemplarily, the bottom of the first groove body 2211 is provided with an annular groove, or the bottom wall of the cover plate 222 is provided with an annular groove, or both the bottom of the first groove body 2211 and the bottom wall of the cover plate 222 are provided with annular grooves.

[0114] In some embodiments, Fig.12 As shown, the cover plate 222 is provided with an operating groove 2221 , the groove opening of the operating groove 2221 faces the housing 1 , and the groove bottom of the operating groove 2221 is an arc surface.

[0115] Among them, the operating groove 2221 is recessed in the upper surface of the cover plate 222. Since the cover plate 222 is located in the first groove body 2211, the cover plate 222 is flush with or lower than the upper surface of the orientation seat 3. The operator can insert tools or hands into the operating groove 2221 to separate the cover body from the threading groove 221 for easy operation.

[0116] A plurality of operation slots 2221 may be provided, and the plurality of operation slots 2221 are arranged at intervals on the cover plate 222 to further facilitate operation.

[0117] Exemplarily, the bottom of the operating groove 2221 may also be an arc surface, a plane or other shapes.

[0118] In some embodiments, Fig. 9 As shown, the wire threading groove 221 is provided with a through hole 2222, and the through hole 2222 is connected to the installation cabin; the wire threading channel 223 includes a first wire threading hole and a second wire threading hole, the first wire threading hole passes through the connecting part 22 and one of the two support arms 21 in sequence to be connected to the load cabin, and the second wire threading hole passes through the connecting part 22 and the other of the two support arms 21 in sequence to be connected to the load cabin.

[0119] Among them, the through hole 2222 is used for threading. The cable can pass through the through hole 2222 from the installation cabin into the threading groove 221. The through hole 2222 can be set at any position of the bottom of the threading groove 221, for example, in the middle of the bottom of the threading groove 221 or near the edge.

[0120] In this embodiment, a threading channel 223 is provided in each support arm 21, and the nearest threading channel 223 can be selected for wiring according to the position of the photoelectric sensor device in the load compartment, thereby shortening the cable length, reducing costs, and reducing the difficulty of threading.

[0121] In some embodiments, Fig.10 As shown, the through hole 2222 is disposed in the middle of the threading groove 221 , and the first threading hole and the second threading hole are disposed relatively on the orientation seat 3 along the axial direction of the through hole 2222 .

[0122] Among them, a part of the cables extending from the installation cabin of the azimuth seat 3 into the wire threading groove 221 extends into the load cabin from the first wire threading hole, and the other part of the cables extends into the load cabin from the first wire threading hole, thereby realizing the wiring of more cables. At the same time, according to the position of the photoelectric sensor device in the load cabin, the nearest wire threading channel 223 can be selected for wiring, thereby shortening the cable length, reducing the cost, and reducing the difficulty of wire threading.

[0123] In some embodiments, Fig.11 As shown, the azimuth seat 3 includes: a shell 31, a conductive slip ring 32 and a drive motor. An installation cabin is defined in the shell 31, and the conductive slip ring 32 and the drive motor are installed in the installation cabin. The connecting part 22 is coupled to the drive motor through the conductive slip ring 32; the shell 31 and the connecting part 22 are clearance-matched.

[0124] In this embodiment, a conductive slip ring 32 is used for conduction, which can achieve an azimuth angle of n×360°, thereby realizing the conversion of the signal from the moving part to the stationary part.

[0125] In some embodiments, Fig.11 As shown, a mating groove 224 is provided on the bottom wall of the connecting portion 22, and the notch of the mating groove 224 faces the orientation seat 3; a plurality of protrusions 311 are provided at intervals on the outer edge of the shell portion 31, and the plurality of protrusions 311 extend around the circumference of the shell portion 31, and the protruding heights of the plurality of protrusions 311 relative to the outer wall of the shell portion 31 gradually increase from top to bottom along the height direction of the shell portion 31; the plurality of protrusions 311 are gap-matched with the groove wall of the mating groove 224.

[0126] The connecting portion 22 is matched with the orientation seat 3 in a concave-convex manner, a matching groove 224 is provided on the bottom wall of the connecting portion 22, at least part of the orientation seat 3 is located in the matching groove 224, and a plurality of protrusions 311 are located in the gap between the matching groove 224 and the orientation seat 3.

[0127] The protruding heights of the multiple protrusions 311 relative to the outer wall of the shell 31 gradually increase from top to bottom along the height direction of the shell 31. The multiple protrusions 311 can play a guiding role, making it easier for the orientation seat 3 to extend into the matching groove 224 to couple the conductive slip ring 32 with the connecting part 22, and can reduce the deflection of the connecting part 22 to a certain extent, thereby playing a certain corrective role.

[0128] The plurality of protrusions 311 are clearance-matched with the groove wall of the matching groove 224 , so that the connecting portion 22 can rotate smoothly relative to the orientation seat 3 .

[0129] In some embodiments, the movable ends of the conductive slip ring 32 are respectively connected to the connecting part 22, and the fixed end of the conductive slip ring 32 is suitable for being electrically connected to the control module, so as to realize the azimuth angle of the housing 1 to be n×360°, and realize the conversion of the signal from the moving part to the stationary part. The conductive slip ring 32 can provide power and energy for the connecting part 22, so that the connecting part 22 can realize signal transmission while infinitely rotating.

[0130] In some embodiments, Figure 2 As shown, the azimuth seat 3 also includes: a connector 33, which is arranged at the bottom of the shell 31 and at least partially extends to the installation cabin. The connector 33 is used to connect with the unmanned control platform to realize signal transmission, so as to realize the detection, perception and identification of targets such as people or vehicles under multiple spectrums; through the intelligent detection and tracking platform, the automatic identification of human or vehicle targets is completed, and the servo control system is cooperated to realize unmanned and intelligent combat functions.

[0131] In this embodiment, by providing a connector 33, the control module and the power amplifier board of the optoelectronic turntable are separate modules, and the control module and the power amplifier board are connected by a connector. The connector is disconnected during maintenance, so that the control module and the power amplifier board can be inspected and replaced separately, thereby improving product interchangeability. After the fault is located, the parts can be interchanged, shortening the maintenance time.

[0132] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0133] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0134] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0135] In the description of the present application, “plurality” means two or more.

[0136] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0137] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0139] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A photoelectric turntable, characterized in that: include: A housing, wherein the housing forms a load compartment with one end open, and the load compartment is used to install a photoelectric sensor device; A pitch frame, the pitch frame comprising a connecting portion and two supporting arms arranged at two ends of the connecting portion, the two supporting arms being arranged at two opposite sides of the housing along a first direction and being rotatably connected to the housing; An azimuth seat, wherein an output end of the azimuth seat is connected to the connecting portion to drive the pitch frame to rotate around an axis in a second direction, and an installation cabin for installing electronic devices is provided in the azimuth seat; A heat dissipation module, the heat dissipation module comprises a heat sink and a fan, the heat sink comprises a base plate and a plurality of heat dissipation fins, the base plate is arranged at the open end of the shell, the base plate is used to close the load compartment, the plurality of heat dissipation fins are arranged at intervals on the outer side wall of the base plate; the fan is connected to the plurality of heat dissipation fins; Wherein, the connecting part is provided with a wire threading groove and a cover plate, the wire threading groove is recessed in the upper surface of the connecting part and the notch of the wire threading groove faces the shell, and the wire threading groove is suitable for being connected with the installation cabin of the azimuth seat; the connecting part and the support arm are provided with a wire threading channel, one end of the wire threading channel is connected with the wire threading groove, and the other end passes through the connecting part and the support arm in sequence to be connected with the load cabin; the cover plate is detachably arranged on the notch of the wire threading groove.

2. The photoelectric turntable according to claim 1, characterized in that: The plurality of heat dissipation fins include a plurality of first fins, each of the first fins is provided with an avoidance notch, the plurality of avoidance notches on the plurality of first fins are aligned to form an avoidance groove, and the avoidance groove is open at both ends along the arrangement direction of the plurality of first fins; The fan is installed in the avoidance groove, and the fan is communicated with the heat dissipation duct between two adjacent first fins.

3. The photoelectric turntable according to claim 2, characterized in that: The first fin comprises a first portion and a second portion, the second portion is arranged opposite to the first portion on both sides along the width direction of the first portion, and the height of the second portion decreases from close to the first portion to far away from the first portion; the avoidance notch is located in the first portion, and the height of the avoidance notch is less than the height of the first portion; and / or, The fan is connected to at least two heat dissipation fins among the plurality of heat dissipation fins.

4. The photoelectric turntable according to claim 2, characterized in that: The plurality of heat dissipation fins further include a plurality of second fins, and the plurality of second fins are separately arranged at the open ends of the avoidance grooves.

5. The photoelectric turntable according to claim 4, characterized in that: Two second fins located at both sides of the open end of the avoidance groove among the plurality of second fins are flush with the groove top of the avoidance groove; And / or, the heights of the plurality of second fins decrease in sequence from close to the avoidance groove to far away from the avoidance groove.

6. The photoelectric turntable according to any one of claims 1 to 5, characterized in that: The fan includes a housing, an impeller and a waterproof motor. Both ends of the housing are open and one end is connected to the plurality of heat dissipation fins. The impeller and the waterproof motor are arranged in the housing. The output end of the waterproof motor is coupled to the impeller.

7. The photoelectric turntable according to any one of claims 1 to 5, characterized in that: The threading groove comprises a first groove body and a second groove body which are coaxially arranged and connected, the outer diameter of the first groove body is larger than the outer diameter of the second groove body, the first groove body is arranged close to the housing, and the cover plate is arranged on the first groove body; A sealing member is sandwiched between the first tank body and the cover plate.

8. The photoelectric turntable according to any one of claims 1 to 5, characterized in that: The cover plate is provided with an operation groove, the groove opening of the operation groove faces the housing, and the groove bottom of the operation groove is a curved surface; and / or, The wire threading groove is provided with a through hole, which is connected to the installation cabin; the wire threading channel includes a first wire threading hole and a second wire threading hole, the first wire threading hole passes through the connecting part and one of the two support arms in sequence to be connected to the load cabin, and the second wire threading hole passes through the connecting part and the other of the two support arms in sequence to be connected to the load cabin.

9. The photoelectric turntable according to any one of claims 1 to 5, characterized in that: The azimuth seat comprises: a shell, a conductive slip ring and a drive motor, the shell defines the installation cabin, the conductive slip ring and the drive motor are installed in the installation cabin, and the connecting part is coupled to the drive motor through the conductive slip ring; The shell portion is clearance-matched with the connecting portion.

10. The photoelectric turntable according to claim 9, characterized in that: A matching groove is provided on the bottom wall of the connecting portion, and the notch of the matching groove faces the orientation seat; a plurality of protrusions are provided on the outer edge of the shell portion, which are arranged at intervals, and the plurality of protrusions extend around the circumference of the shell portion, and the protruding heights of the plurality of protrusions relative to the outer wall of the shell portion gradually increase from top to bottom along the height direction of the shell portion; the plurality of protrusions are clearance-matched with the groove wall of the matching groove; and / or, The movable ends of the conductive slip rings are respectively connected to the connecting parts, and the fixed ends of the conductive slip rings are suitable for being electrically connected to the control module.

Images