197results about How to "Avoid attenuation" patented technology

The invention discloses a preparation method of a gallium nitride-based resonant cavity light-emitting diode and a product of the gallium nitride-based resonant cavity light-emitting diode. The method sequentially comprises the following steps: epitaxially growing a gallium nitride-based epitaxial layer on an original substrate, and preparing a plurality of curved surface structures on one surface of the gallium nitride-based epitaxial layer; sequentially depositing a current expansion layer, a curved surface reflector and a transition layer on the curved surface structure along a first direction, and preparing a regional metal substrate corresponding to the size of the transition layer on the surface of the transition layer of each curved surface structure; placing one side of the regional metal substrate on a temporary substrate, removing the original substrate, and polishing, thinning and planarizing the other surface of the gallium nitride-based epitaxial layer; depositing a plane mirror on the other surface of the gallium nitride-based epitaxial layer, and preparing an electrode; and removing the temporary substrate to obtain the single independent gallium nitride-based resonant cavity light-emitting diode. According to the invention, metal curled edges and side wall damages during obtaining of an independent device can be improved, an experimental process is optimized, and performances of light output power and the like of the device are improved.

The invention belongs to the field of diamond polishing, and particularly discloses a device and method for promoting efficient diamond polishing through ultraviolet irradiation under the low air pressure, the device comprises a sealed cavity, an upper rotating shaft, a lower rotating shaft, a polishing plate and an ultraviolet lamp, the upper rotating shaft, the lower rotating shaft, the polishing plate and the ultraviolet lamp are arranged in the sealed cavity, process gas is contained in the sealed cavity, and the air pressure is kept at 0.2 torr to 2 torr; the lower part of the upper rotating shaft is connected with a to-be-ground diamond; the upper part of the lower rotating shaft is connected with a polishing plate; the polishing plate is made of a transparent material or a metal material with a plurality of light through holes, and is in contact with the diamond to be ground; and the ultraviolet lamp is arranged below the polishing plate and is coaxial with the upper rotating shaft. According to the method, the to-be-ground diamond is irradiated by the ultraviolet rays under the low air pressure, so that the diamond can be preferentially graphitized to form the soft graphite layer, and then the soft graphite layer is rubbed and removed by the polishing plate at the normal temperature, and the diamond can be effectively prevented from being damaged.

The invention discloses a cooling heat dissipation structure and a cooling heat dissipation frequency conversion all-in-one machine, is used for solving the technical problem that fine parts in a frequency converter cannot be effectively cooled, and belongs to the technical field of heat dissipation devices. The device comprises a permanent magnet synchronous motor and a frequency converter, the upper surface of the permanent magnet synchronous motor is fixedly connected with the bottom surface of a box body of the frequency converter through a connecting frame, a cooling heat dissipation structure is arranged in the frequency converter, first heat dissipation holes are formed in the frequency converter, and the cooling heat dissipation structure is electrically connected with an internal power supply of the frequency converter. The cooling heat dissipation structure is provided with a movable heat dissipation fan set. The cooling heat dissipation structure is arranged in the frequency converter, the multiple movable heat dissipation fan sets are used for rotating heat dissipation, and when the local temperature rises, the sliding blocks and the fans move to the corresponding positions, and the fans are rotated for heat dissipation.

The utility model discloses a three-in-one water cup which comprises a cup body, a suction tube turning cover, a suction tube head, a drinking opening screw cover, a suction tube base, a one-way valve and a suction tube. A suction port, a direct drinking port and a first through hole are formed in the drinking port screw cap; the straw base is arranged at the bottom of the drinking opening screw cap, a hollow cavity is formed in the straw base, and the straw is communicated with the hollow cavity; the straw head is arranged in the straw turning cover and provided with a suction nozzle part, a first plug part, a second plug part and a straw part. When the suction tube flip cover is in an open state, a user can drink water through the direct drinking opening or the suction opening; when the suction tube turning cover is in a closed state, a user can drink water through the suction tube head; the one-way valve can isolate external gas from being introduced into the cup body from the suction tube base, so that the situation that liquid cannot be sucked out smoothly due to weakening or disappearance of suction force is prevented; the water cup is provided with three water drinking opening structures, the water drinking requirements of a user in different scenes can be met, one cup has multiple purposes, and the water drinking experience of the user is remarkably improved.

The utility model relates to the technical field of furniture provides a zero gravity chair frame, and zero gravity chair frame includes fixed seat, linkage and screw rod mechanism, and linkage is equipped with backrest structure and leg support structure, and screw rod mechanism sets up in fixed seat, and screw rod mechanism includes transmission screw rod, wherein, the leg support structure and fixed seat between being equipped with connecting rod structure, and connecting rod structure has first angle and second angle, at first angle, backrest structure and leg support structure draw together relative to fixed seat, at second angle, backrest structure and leg support structure unfold relative to fixed seat, and connecting rod structure supports leg support structure. By connecting rod structure bears the pressure in the up and down direction, thereby reduced transmission screw rod's stress. The above design is favorable to avoid transmission screw rod reciprocating extension and shortening in the horizontal rhythm process, solves the problem that backrest structure and leg support structure alternate up and down and swings, and reduces the noise, guarantees the overall stability when rhythm seat horizontal rhythm again, significantly promotes the experience.

The utility model provides a high -strength anti -bending cooling structure of charging gun charging cable, including the upper cooling pipe and lower cooling pipe made of EPDM material, the upper cooling pipe and lower cooling pipe mutually adhere, and one end of upper cooling pipe and lower cooling pipe is provided with elbow joint respectively, and the other end of upper cooling pipe and lower cooling pipe is provided with straight pipe joint respectively, forms two side clamping grooves at the adhering place of upper cooling pipe and lower cooling pipe two sides, and is provided with charging wire in two side clamping grooves respectively, the outer wall of upper cooling pipe, lower cooling pipe and charging wire is covered with a wear -resisting layer, the upper and lower cooling pipe is set up mutually adhering, forms two side clamping grooves at its two sides, and is provided with charging wire in two side clamping grooves, one aspect of this arrangement makes charging cable overall strength to improve, and it is not easy to bend, and the upper and lower cooling pipe can also play the clamping, protection effect to charging wire, on the other hand, the upper and lower cooling pipe and charging wire adhere closely, and it is favorable to the cooling of charging wire.

The present application relates to the technical field of tethered unmanned aerial vehicle, and discloses an unmanned aerial vehicle energy supply system and method based on optical fiber cable, comprising: an energy supply station arranged on the ground or carried on a mother ship; a light flexible high-energy laser transmission optical cable, the first end of which is optically coupled with the energy supply station; and an unmanned aerial vehicle, which is provided with an optoelectronic conversion unit, the second end of the light flexible high-energy laser transmission optical cable being releasably physically connected with the optoelectronic conversion unit, for receiving a high-energy laser beam transmitted through the light flexible high-energy laser transmission optical cable, and converting the high-energy laser beam into electric energy through the optoelectronic conversion unit to provide all or part of the electric power required for flight and task load; through the laser-electric energy conversion mode based on the light flexible high-energy laser transmission optical cable, the decoupling of the hovering height and the operation radius of the unmanned aerial vehicle is realized, the restriction of the self-weight of the on-board battery on the flight performance is eliminated, and the unmanned aerial vehicle can still maintain stable hovering and long-time hovering in a complex airflow environment.

The application discloses a high-precision optical lens production grinding device, relates to the technical field of optical lens grinding, and comprises a grinding box and a connecting table arranged on one side of the grinding box. The inside of the grinding box is provided with a grinding assembly. The top of the connecting table is provided with a driving assembly. The driving assembly is used in cooperation with the grinding assembly. An adjusting assembly is connected to the driving assembly. The bottom of the grinding box is provided with a reflux filtering assembly. The reflux filtering assembly comprises a reflux box arranged at the bottom of the grinding box. The bottom of the reflux box is provided with a leakage hole. A bushing is arranged on the outer wall of one side of the reflux box. The high-precision optical lens production grinding device disclosed by the application can improve the cleanliness of the recycled grinding liquid, thereby guaranteeing the grinding effect of high-precision optical lenses.

The application relates to a height adjusting device and a storage library. The height adjusting device comprises a height adjusting structure and an adjusting wrench. The height adjusting structure comprises a supporting base, an adjusting sleeve, a floating top base and a locking assembly. The upper surface of the adjusting sleeve is provided with a first matching surface spirally rising around a second direction. The floating top base is movably sleeved on the supporting base and located above the adjusting sleeve. The upper surface of the floating top base is provided with a second matching surface corresponding to the first matching surface. The second matching surface spirally rises around the second direction. The locking assembly is arranged on the adjusting sleeve and the supporting base. The adjusting wrench is partially arranged around the side of the adjusting sleeve. The adjusting wrench can drive the adjusting sleeve to rotate around the first direction, so that the adjusting sleeve drives the second matching surface to be lifted through the first matching surface, and the floating top base is lifted relative to the supporting base. In this way, the height of the stand column can be adjusted, the height of the stand column in the storage library is conveniently adjusted, and the levelness of the track at the top of the storage library is ensured.

This invention provides a high-strength, pressure-resistant tapered roller bearing for tunnel boring machines (TBMs), relating to the field of core TBM components. It includes an inner bearing ring, an outer bearing ring, a bearing cage, rolling elements, a speed sensor, a lubrication discharge pipe, a waste liquid separator, and a switching mechanism. The outer bearing ring is located outside the inner bearing ring. The bearing cage is located outside the inner bearing ring. The rolling elements are located inside the bearing cage. The speed sensor is fixedly connected to the upper front end of the outer bearing ring. The lubrication injection pipe is fixedly connected above the outer bearing ring. The lubrication discharge pipe is fixedly connected below the outer bearing ring. The waste liquid separator is fixedly connected below the outer bearing ring and communicates with the lubrication discharge pipe. The switching mechanism is located outside the outer bearing ring, enabling intelligent switching between two lubrication media and solving the problem of limited applicability of tapered roller bearing lubrication systems in TBMs.

The invention discloses a refrigerant adjusting method, device and system. The method comprises the steps that the current refrigerant temperature difference between the first refrigerant temperature of an inlet of the air-cooled condenser and the second refrigerant temperature of an outlet of the air-cooled condenser is obtained; the current deviation between the current refrigerant temperature difference and the temperature difference reference value is determined; under the condition that the current deviation is not within the first range, a feedback control model based on a real-time error is called, the opening degree of a first adjusting valve is adjusted according to the current deviation, so that the deviation between the adjusted refrigerant temperature difference between the inlet and the outlet of the air-cooled condenser and the temperature difference reference value is within the first range, and the first adjusting valve communicates with the air-cooled condenser; according to the scheme, the fluctuation of the key heat exchange parameter (temperature difference) is actively restrained within a set reasonable range, system performance degradation or operation risks caused by large drifting of parameters are effectively avoided, stable and reliable operation of the whole system is guaranteed, and the technical problem that the operation stability of an evaporation cold and heat pump unit system is low can be solved.

The application discloses a kind of live detection devices of pole-mounted transformer internal insulation defects, including acquisition terminal, telescopic insulating rod, intelligent analysis terminal;The first side of acquisition terminal is provided with acoustic sensor and is used to adsorb to the surface of pole-mounted transformer adsorption component, and acoustic sensor is used to collect voiceprint partial discharge signal;The top of insulating rod is provided with connecting component for disassembling acquisition terminal;Intelligent analysis terminal is connected with acquisition terminal, for whether there is insulation defect in pole-mounted transformer according to voiceprint partial discharge signal analysis inside.The above-mentioned live detection device of pole-mounted transformer internal insulation defect can quickly and conveniently contact live detection to pole-mounted transformer, avoid the interface effect of box and air and air absorption attenuation, improve the anti-electromagnetic interference ability, accurately determine the internal insulation fault of transformer, improve detection sensitivity and accuracy, eliminate security risks as soon as possible, avoid transformer explosion.

The application discloses a brake footboard device and a vehicle, which comprises a mounting bottom plate, a brake valve, a brake footboard mechanism and an angle detection module. The valve top of the brake valve extends upward from the mounting bottom plate. The brake footboard module of the brake footboard mechanism is installed on the mounting bottom plate through a first overturning installation module. The pressing member is arranged on the lower side of the brake footboard module and faces the valve top. The brake footboard module overturns downward and drives the pressing member to press the valve top under the action of the foot pedal force. The brake footboard module overturns upward and returns to the initial posture under the condition that the foot pedal force is removed. The angle detection module is used for brake control of the transmission system of the vehicle according to the downward overturning angle of the brake footboard module. The pedal stroke and the brake force curve are close to the ideal linear relationship, the power transmission path is simple, the energy loss is small in the transmission process, the brake force is prevented from being greatly attenuated, the advantages of electric control and mechanical brake are combined, the brake force is quickly improved, and the brake distance is shortened.

The application belongs to the technical field of biological medical materials, and discloses a polydopamine modified modified nano-graphyne and a preparation method and application thereof. In the method, the polydopamine coating is combined with the nano-graphyne for the first time to construct a GDY@PDA composite system, and the core defects of the blocky graphyne, such as easy agglomeration, poor water solubility and insufficient biocompatibility, are solved. The graphyne-based material is applied to the near-infrared two-region photothermal regulation of neural cell calcium influx for the first time, the calcium ion channel is activated through the local thermal effect of the material, and precise, remote and reversible calcium influx regulation is realized; the limitation that the traditional biocompatibility modification is easy to fall off and difficult to functionalize is broken through, the polydopamine modification makes the material have both photothermal efficiency and biological safety, and the application of the graphyne in the treatment of neural diseases (such as neural cell injury repair) is expanded.

This invention relates to the field of lithium battery heat dissipation technology, specifically disclosing a heat dissipation device for lithium battery packs, comprising a support plate and a top plate. The support plate and the top plate are arranged longitudinally symmetrically in parallel. Multiple sets of coaxially corresponding mounting holes 1 and 2 are arrayed along the length direction on their opposite end faces. Hollow sealing rings are fixedly installed on the inner walls of both mounting holes 1 and 2. Two symmetrically arranged side plates 1 and 2 are fixedly connected to the two side edges of the support plate and the top plate. The support plate, the top plate, the side plates 1 and 2 together form a cavity structure for accommodating the lithium battery pack and heat dissipation components. Several fan support frames are arrayed along the length direction of the side plates 1 facing the inner side of the cavity, and each of the fan support frames is equipped with a corresponding heat dissipation fan. The air outlet direction of the heat dissipation fan faces the inner cavity. This invention addresses the problem of the single heat dissipation function of lithium batteries.

The application provides an ultrasonic wall power supply and echo modulation communication transformer built-in partial discharge monitoring system, which comprises an external device and an internal device. The external device comprises a first transducer for generating frequency multiplication ultrasonic waves synchronized with the phase of power grid power frequency voltage and emitting into the oil tank. The internal device comprises a second transducer and a signal processing unit; the signal processing unit demodulates the phase of the power grid power frequency voltage from the frequency multiplication ultrasonic waves, extracts characteristic parameters from the partial discharge signal and labels the phase angle, and further changes the load impedance of the second transducer by controlling the switching element to modulate the reflected echo, and sends the data through the modulated reflected echo. The external device demodulates the characteristic parameters and the phase angle from the reflected echo. The application utilizes ultrasonic waves to penetrate the metal tank wall, simultaneously realizes wireless power supply, power frequency phase synchronization and low-power echo modulation communication, does not need a battery or a lead, and realizes the full life cycle maintenance-free online monitoring of the transformer internal partial discharge.

According to the hoisting mechanism and the sound box, through the arrangement of the hoisting assembly and the reinforcing assembly, the distribution of force in the hoisting process is more uniform, the structural stability of the shell is greatly enhanced, and therefore deformation is avoided. And secondly, as the deformation problem is effectively solved, the interference of the deformation of the shell on an acoustic structure in the sound equipment is avoided, so that the distortion or weakening of sound output is prevented, the stability of the sound equipment in the hoisting process is ensured, and the definition and fidelity of the sound output are further ensured.

The invention relates to the technical field of high-activity metal powder, in particular to high-environmental-stability aluminum-lithium alloy powder and a manufacturing method and application thereof.The high-environmental-stability aluminum-lithium alloy powder comprises, by weight, 1.0-10.0 wt.% of Li, 1.0-10.0 wt.% of Al, 1.0-10.0 wt.% of Ti, 1.0-10.0 wt.% of Ti, 1.0-10.0 wt.% of Ti, 1.0- 0.1 to 5.0 wt.% of Zr; 0.01 to 2.0 wt.% of Ti; 0.05 to 3.0 wt.% of RE; wherein RE is a rare earth element and at least comprises Y, Ce, La or a combination thereof, the sum of Zr, Ti and RE does not exceed 8.0 wt.%, and the balance is Al and inevitable impurities. The method has the effect of improving the use stability and the machining consistency of the aluminum-lithium alloy powder.

The invention relates to the technical field of wireless communication, in particular to a well site sensor signal wireless receiving and transmitting device and a sequence working method.The well site sensor signal wireless receiving and transmitting device comprises a wireless sensor host, a wireless receiving and transmitting host, a well depth system and a driller displayer, and the wireless sensor host is connected with a pressure sensor through a cable and communicates with the wireless receiving and transmitting host through an antenna; the wireless transceiver host is connected with the PC host through a USB cable and communicates with the driller display and the well depth system through antennas, and the well depth system comprises a well depth measuring instrument, a winch sensor, a hanging load sensor and a pressure sensor for well depth measurement. According to the wireless transmitting and receiving device for the well site sensor signals, through the wireless transmission technology, the time and labor cost of traditional cable wiring are reduced, the efficiency of well site operation is improved, the arrangement of the sensors is not limited by the length and position of cables through wireless transmission, the stability of signal transmission is improved, and the cost is reduced. Potential safety hazards caused by cable damage or faults are reduced, and the safety of well site operation is improved.

The present disclosure relates to a vehicle-mounted device and a vehicle. The vehicle-mounted device comprises a first isolation circuit and a first device module. The first end of the first isolation circuit is configured to be connected with a vehicle-mounted power supply. The first end of the first device module is configured to be connected with the vehicle-mounted power supply, and the second end of the first device module is connected with the second end of the first isolation circuit, so that the second end of the first isolation circuit and the second end of the device module can be connected with a terminal device through the same power line. The first isolation circuit is configured to present a high impedance value to communication signals of different frequency bands transmitted on the power line, and the high impedance value is any impedance value greater than a preset impedance value. The technical solution can improve the reliability and stability of the power line communication link in the vehicle-mounted power line communication scene of the intelligent networked vehicle.

The invention relates to the technical field of semiconductors, and relates to a semiconductor device and a manufacturing method thereof, and the manufacturing method comprises the steps: forming a stacked film layer on a substrate, and the stacked film layer comprises a first conductive layer, a first insulating layer and a second conductive layer which are sequentially stacked in the vertical direction; an opening is formed in the stacked film layer, and the opening penetrates through the second conductive layer in the vertical direction; a second insulating layer and a first sacrificial layer are formed, the second insulating layer at least covers the side wall of the opening, and the first sacrificial layer is located on the surface of the second insulating layer; removing part of the first insulating layer located at the bottom of the opening; forming a second sacrificial layer in the opening with the first sacrificial layer; and removing the residual first insulating layer at the bottom of the opening to form a groove exposing the first conductive layer. The manufacturing method disclosed by the invention can reduce structural defects and improve the electrical performance of a product.

The utility model provides a kind of blowback filter device, it is related to air filtration and ash removal device technical field, including the filter element mounting plate for the filter device is installed to external container interface and supports filter element, at least two filter elements are installed and extend downward in the board face below of filter element mounting plate, the board face above of filter element mounting plate is fixed in exhaust box, gas ring is further equipped on the exhaust box, main air inlet pipe is equipped on the side of gas ring and is communicated with gas ring, the blowback pipe is equipped with multiple and corresponds with filter element quantity, one end of the multiple blowback pipes is fixed and communicated with the gas ring, and the other end of the multiple blowback pipes sequentially passes through exhaust box and filter element mounting plate and extends into the internal cavity of the filter element. The technical scheme can solve the problems of complex blowback gas circuit, high installation control cost of pipeline and valve, poor cleaning effect of filter element and low cleaning efficiency in the prior art.

The utility model relates to the cable field, and especially relates to a multichannel isolation shielding cable comprising a cable core, a composite shielding layer, a filling layer and a protection layer, the composite shielding layer wraps the cable core, and the filling layer is filled between the composite shielding layer and the protection layer; the composite shielding layer comprises an inner shielding layer, an insulating layer and a shielding tape layer, the inner shielding layer wraps the outer side of the cable core, the insulating layer wraps the outer side of the inner shielding layer, the shielding tape layer wraps the insulating layer, and a bonding layer is arranged on the side, making contact with the insulating layer, of the shielding tape layer. According to the utility model, near-field coupling and frequency band cross interference among the wire cores can be effectively reduced, and the anti-interference capability of the cable is significantly improved.

The invention provides an energy storage DC-DC control module structure device, and relates to the technical field of energy storage equipment, the energy storage DC-DC control module structure device comprises a module shell, the left side and the right side of the module shell are both provided with fixing supports, the left side of the module shell is provided with a first connector, the right side of the module shell is provided with a second connector, and the module shell is provided with a module upper cover. A sealing ring and a module PCBA are arranged in the module shell, the module shell is made of a high-strength alloy material, an installation groove matched with the installation of the module PCBA is formed in the module shell, a limiting structure is arranged on the wall of the groove, and the fixing support is assembled in the module shell. The space occupation and the carrying cost of the energy storage equipment are greatly reduced, the device is not only suitable for a fixed energy storage power station, but also can be flexibly applied to mobile energy storage scenes such as a portable energy storage power supply, a mobile charging station and a vehicle-mounted energy storage system, and the market application range of the product is effectively expanded.

The application relates to an image super-resolution reconstruction method and device based on anchor point guidance and boundary refinement cooperation, and belongs to the field of computer vision. The method comprises the following steps: performing shallow feature extraction on an input low-resolution image to obtain initial features; a deep feature enhancement network comprising multiple series cooperative reconstruction units is constructed, the initial features are input, and the initial features are sequentially enhanced by each unit; each unit performs anchor point routing global interaction and boundary perception region refinement on the input features to obtain global enhanced features and local refined features, the global enhanced features and the local refined features are fused through adaptive gating, and then the input features are fused through residual fusion, current cooperative enhanced features are output and are transmitted to the next unit, and finally, deep enhanced features are obtained; upsampling and pixel reconstruction are performed on the deep enhanced features, and a super-resolution image is output. The application considers long-distance structure dependence modeling and local boundary detail recovery, and realizes the cooperative optimization of global structure consistency and local detail fidelity under the constraint of lightweight deployment.

The invention relates to a single-wire communication method, a communication system, a readable storage medium and a program product, and the method comprises the steps: receiving a target carrier clock signal transmitted through a serial communication channel for an nth slave device; the target carrier clock signal is a carrier clock signal which is sent by the master device, carries an original carrier clock signal of target communication data, and is obtained after the original carrier clock signal is subjected to phase reversal processing of part or all of the first (n-1) slave devices; and decoding the target communication data from the target carrier clock signal by identifying the carrier level duration of the effective carrier level in the target carrier clock signal. In the transmission process of the carrier clock signal along the serial communication channel, the carrier clock signal is subjected to selective phase reversal processing by the slave device on the communication link, so that the problems of duty ratio distortion and signal attenuation caused by long-distance transmission can be effectively avoided, the accuracy and reliability of communication data transmission are guaranteed, and the transmission efficiency is improved. And the expandability of the communication system can be effectively improved.

This disclosure relates to a voice call processing method, circuit, apparatus, medium, chip, and terminal, belonging to the field of electronic technology, and can improve the sensitivity of signals used for proximity detection. A voice call processing method includes: during a voice call at the terminal, receiving a sampled signal acquired by the terminal's microphone, wherein the sampled signal includes a first voice signal and a proximity detection signal for proximity detection; filtering the sampled signal to remove the first voice signal and obtain the proximity detection signal; amplifying the filtered proximity detection signal; performing analog-to-digital conversion on the amplified proximity detection signal; and determining a proximity detection result based on the analog-to-digital converted proximity detection signal.

The present invention provides a low sidelobe antenna applied to a vehicle communication system, which relates to the technical field of communication antennas, and aims to solve the problems of the low sidelobe antenna of the existing vehicle communication system, such as being unable to independently locate at multiple points, unable to realize multiple radio wave polarization adjustments required for automobile communication, having reduced radio wave loss control effect, being unable to realize real-time monitoring of low sidelobe signals by means of analog signals, and being unstable. The low sidelobe antenna comprises a shell device; a mounting foot is installed at the bottom of the shell device; a driving unit is installed inside the shell device; four groups of adjustment devices are installed on four sides of the driving unit; an anti-interference driving unit is provided, which drives a driving gear ring to rotate under the drive of a gear motor to prevent shielding interference, and a signal receiver can realize real-time monitoring of the sidelobe parameters of the low sidelobe antenna, which is convenient for staff to carry out maintenance work, and ensures the stability required by the automobile communication system to a great extent.

The invention discloses machining drilling equipment capable of replacing multi-model drill bits, and relates to the technical field of drilling. The device comprises a device body, supporting legs are arranged at the bottom of the device body, an L-shaped plate is arranged at the edge of the top of the device body, a workbench is arranged at the center of the top of the device body, the device further comprises an anti-jamming device, the anti-jamming device is arranged at the top of the inner wall of the L-shaped plate, and the anti-jamming device comprises a drilling assembly, an electric telescopic rotating column, a telescopic clamping ring and a drilling head. The top of the drilling assembly is fixedly installed on the top of the inner wall of the L-shaped plate, the top of the electric telescopic rotary column is rotationally installed in the center of the bottom of the drilling assembly, and a spring is arranged on the outer wall surface of the telescopic end of the electric telescopic rotary column. By means of the telescopic clamping ring, the telescopic clamping ring is made to adapt to drilling heads of different sizes and diameters by means of the contraction characteristic of the telescopic clamping ring and the abutting force generated when the drilling heads are installed, the method is different from the complexity of manual accessory replacement of transmission workers, and the working efficiency is improved to a certain degree.