22results about How to "Isolation impact" patented technology

The invention belongs to the technical field of distribution line hot-line work, and particularly discloses an electromagnetic protection device and method suitable for a 10KV distribution line hot-line work mechanical arm, the electromagnetic protection device comprises an anti-electromagnetic main control box, an insulation mechanical arm and a tail end tool protection assembly, the anti-electromagnetic main control box comprises a shell and a protection layer, and a main control board is arranged in the shell; the protective layer is arranged on the inner surface of the shell and is used for performing double-layer electromagnetic shielding on the main control board; the tail end tool protection assembly is arranged at one end of the insulating mechanical arm, a control panel in the tail end tool protection assembly is used for receiving a control signal from the main control panel and transmitting the control signal to the motor driving board through an optical fiber, and the motor driving board emits a driving signal to drive a motor to act so as to operate a wire; the power supply module is used for separately supplying power to the control board and the motor driving board. Software shielding and hardware shielding are considered at the same time, the anti-electromagnetic interference capacity of the hot-line work mechanical arm can be improved, and the service life of equipment is prolonged.

The utility model discloses a kind of damping device of unmanned plane rotating shaft, it is related to unmanned plane technical field, including: unmanned plane body and damping protection piece, unmanned plane body has rotor support, the end of rotor support is equipped with rotor drive structure, the end of rotor support is located below rotor drive structure and is equipped with through mounting hole;Damping protection piece is connected in the outside of rotor drive structure by mounting rod through mounting hole, the connecting place of mounting rod and mounting hole has elastic damping part, the outside of mounting rod is formed with damping and protection structure.The utility model sets up mounting hole by being arranged at the end of rotor support, connects damping protection piece in the outside of rotor drive structure, and sets up elastic damping part at the connecting place of mounting rod and mounting hole, can effectively buffer the vibration and impact of rotor rotating shaft, improve the flight stability and reliability of unmanned plane under complex environment.

The utility model discloses a master control box with explosion-proof and fire-extinguishing functions, which comprises a box body internally provided with a mounting bin and a liner located in the mounting bin, and is characterized in that the box body is provided with a box bottom and a box cover, and the box cover is matched with an opening of the box bottom to form the mounting bin; a ventilation hole set is formed in one side face of the box bottom of the installation bin and serves as an outer ventilation face, and ventilation holes are formed in the face, opposite to the outer ventilation face of the box bottom, of the lining container and serve as an inner ventilation face. The lining container is in a U shape, is located in the installation bin and is matched with the installation bin on the side face and the bottom face in a spaced mode, and a heat insulation layer is formed by the spaced positions and is light-filled relative to the heat insulation layer of the box body. And the lining container is in sealing fit with the box cover to form a working cavity. According to the main control box, an explosion-proof and fire-extinguishing structure is integrated in the main control box, so that a fire-extinguishing mechanism can be immediately started when the battery pack is on fire abnormally, fire spreading is prevented, and the safety of the whole system is greatly improved.

The utility model relates to vehicle-mounted hydrogen supply technical field especially a kind of stacked vehicle-mounted hydrogen system frame, including base, the top of the base is equipped with shock-absorbing component by bolt, the top of shock-absorbing component is equipped with support frame by bolt, the number of support frame is several, the front and back sides of support frame are all welded with positioning insert shell, the four corners of support frame inner chamber are all fixedly installed with limit seat, hydrogen storage bottle is installed between upper and lower limit seat, the bottom of top cover plate outer surface is welded with protective screen cover.Vibration makes elastic damping body and rubber damping pad occur elastic deformation, convert most high-frequency vibration energy into heat energy consumption, after attenuation, smooth force is transmitted to the support frame of hydrogen system by inner lining plate, effectively isolate the vibration and impact transmitted in vehicle driving, substantially reduce the dynamic load borne by entire hydrogen system, significantly improve the reliability and security of system.

This utility model discloses a forging stress detection device, relating to the field of materials science and technology. The device includes a base with a support frame fixedly connected to its top. A fixing mechanism is mounted on the base, and a detection mechanism is mounted on the support frame. The fixing mechanism includes a limiting ring, with a threaded rod rotatably connected to the inner wall of the limiting ring. By incorporating a soft pad, rotating a knob causes the threaded rod to rotate, which in turn moves a threaded cylinder downwards along the threaded rod. This threaded cylinder then pulls a connecting rod downwards, which in turn pulls the moving blocks closer together. The soft pad, which clamps and fixes the forging, effectively isolates it from external vibrations and the vibrations of the testing equipment, preventing displacement due to insufficient fixation and ensuring the accuracy of the test results.

The utility model discloses a blood oxygen test finger cuff, comprising a finger cuff body, with silicone baffles installed on both sides of the finger cuff body, a detachable structure between the silicone baffles and the finger cuff body, a magic tape connected to the lower end surface of the finger cuff body via Velcro, and a slot structure provided on the upper end surface of the finger cuff body, the magic tape wrapped around the outer surface of the finger cuff body and tightly connected to the slot structure. The utility model adopts a fully silicone wrapping method, providing a comfortable fit with the patient's finger during use. The wide-top, narrow-bottom structure is more ergonomic. The strap-type binding can be adjusted according to the size of the finger, preventing excessive tightening from compressing the finger capillaries and excessive looseness from causing data distortion during photoelectric collection. The conveniently installed and fixed light baffle can effectively isolate the influence of external light on red light and infrared light.

A hydraulic telescopic structure with movable sleeve and numerical control lathe tailstock, which relates to mechanical technology field, comprises tailstock body, movable sleeve assembly, sealing assembly and hydraulic drive system. The movable sleeve assembly is composed of outer sleeve and inner sleeve nesting, the outer sleeve adopts stepped design, the outer wall of the inner sleeve is provided with annular protrusion, which cooperates with the middle diameter part of the outer sleeve to form axial limiting. The bearing system comprises multiple groups of thrust ball bearings and double row cylindrical roller bearings, the thrust ball bearings are distributed at the front end and the rear end of the sleeve to bear the axial load, the double row cylindrical roller bearings are installed between the large diameter part and the inner sleeve to provide high radial stiffness support, and the pre-tightening force is adjusted through the locking nut to eliminate the play. The sealing assembly is composed of front end cover, elastic sealing ring and sleeve end cover, the front end cover and the sealing ring form a closed cavity to prevent the invasion of cutting chips and cooling liquid into the sleeve interior; the sleeve end cover and the rear bearing spacer further isolate the external pollutants, and protect the bearing and lubrication system.

The invention discloses a method for cultivating a good camellia chrysantha strain through bare-root transplanting and grafting of a camellia adult tree. The method comprises the following operation steps: (1) stock preparation and bagging; (2) grafting; (3) management after grafting; (4) field planting and management. According to the method, the stock stump is excavated in a completely bare-root mode, the treatment method of stump root systems, branches and the like is easy to operate, transportation is convenient, labor is little, cost is low, and centralized grafting management is facilitated; the adopted pulp root treatment can provide nutrition for the rootstock, can also play a role in sterilization and insect killing under specific humidity, and can inhibit the possibility that the excavated rootstock suffers from diseases and pests as much as possible; according to the method, stock transplanting and scion grafting are conducted at the same time, the cultivation time of large-specification camellia nitidissima plants can be effectively shortened, the cultivation cost is reduced, and early yield and high yield of grafted trees are achieved.

The utility model provides a tunnel portal section structure suitable for bias and valley terrains, which comprises a portal unit, an open cut tunnel unit, a bias body reinforcing unit arranged at a bias mountain and a valley reinforcing unit arranged at a valley, and the bias body reinforcing unit comprises a plurality of first reinforcing units and a plurality of second reinforcing units. The lower end of each first reinforcing unit extends downwards to the position below the open cut tunnel unit, the upper end of each first reinforcing unit extends upwards to the position above the open cut tunnel unit, the lower end of each second reinforcing unit extends downwards to the position above the open cut tunnel unit, and the upper end of each second reinforcing unit is matched with the valley position. By arranging the first reinforcing unit, the influence of bias pressure of a rock-soil body close to the mountain side on the tunnel structure is effectively isolated, meanwhile, the second reinforcing unit is arranged at the valley position with shallow soil covering, the safety of the construction process and the stability of the tunnel structure are guaranteed, and surrounding rock collapse and tunnel lining cracking possibly caused by bias pressure can be effectively prevented.

The present application relates to the technical field of firebrick green strength detection, and particularly relates to a firebrick green strength detection device, a pressure measuring head is inserted into the bottom end of a cylinder frame, a movable frame is slidably connected with a plug rod at the bottom end, the bottom end of the plug rod is fixedly connected with a pre-pressing ring, a connecting piece is arranged at the upper end of the pre-pressing ring, a groove seat is arranged at the bottom end of the movable frame, a second pressure sensor is arranged in the groove seat, and the upper end of the connecting piece is in contact with the second pressure sensor. The pre-pressing ring is first in contact with the surface of the firebrick green, and the annular end face of the pre-pressing ring uniformly acts on the surrounding area of the test point, so that the loose and fragile firebrick green surface particles are smoothly pre-compacted, the local stress concentration and particle dispersion phenomenon caused by the loose structure of the material surface are effectively eliminated, the influence of the test point and the surrounding loose material is isolated, the data fluctuation caused by the edge effect and the initial cracking is avoided, and the detection accuracy is improved.

The circuit structure for a charging box provided by the present invention is used for independently charging and / or communicating two loads placed in the charging box, including: a charging module, a communication module, a common control module, a first electrical contact point, and a second electrical contact point; the charging module includes a voltage input terminal, a first switch unit, and a second switch unit, and the second end of the first switch unit and the second end of the second switch unit are respectively connected to the first electrical contact point and the second electrical contact point; the communication module includes a signal input terminal, a third switch unit, and a fourth switch unit, and the second end of the third switch unit and the second end of the fourth switch unit are respectively connected to the first electrical contact point and the second electrical contact point; the common control module controls the on and off of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit respectively.

This invention discloses a rope-driven anthropomorphic wrist joint with rotational decoupling characteristics, belonging to the field of robotics technology. It includes a rotational decoupling mechanism and a differential mechanism. In the rotational decoupling mechanism, a fixed wheel is fixed to the robot's forearm, while the driving wheel is connected to the differential mechanism. The rope assembly enables flexible drive of the joint module. The rotational decoupling mechanism employs a movable pulley system, utilizing the characteristics of the movable pulleys to decouple the motion of the two sets of steel cables as they pass through the rotational joint. This allows the drive unit to be centrally located on the robot base or near the proximal end structure. The differential mechanism consists of a differential rotation axis, a fixed seat on the outer side of the differential rotation axis, and two symmetrically arranged sets of differential rotating wheels, forming a differential structure. This enables multi-degree-of-freedom composite movements such as pitch and yaw within a limited space, significantly improving structural compactness. This invention uses a rope-driven combined with rope transmission structure, enhancing joint flexibility and effectively isolating the motor output from impact and vibration.

A memory and an access control method thereof, and an electronic device, the memory comprising: at least one memory array and a plurality of sense amplifiers connected to the memory array, each of the memory arrays comprising a plurality of layers of stacked memory cell arrays; the plurality of common bit lines are connected with the bit lines in the plurality of layers of storage unit arrays, each common bit line is connected with one sensing amplifier, and a switch sub-circuit is arranged between each common bit line and the sensing amplifier correspondingly connected with the common bit line, the switch sub-circuit is configured as follows: in a signal sensing stage, the common bit line is communicated with the corresponding sensing amplifier; and in a signal amplification stage, the common bit line and the corresponding sensing amplifier are disconnected. According to the scheme provided by the embodiment, the common bit line and the sensing amplifier can be disconnected in the signal amplification stage, and the influence of capacitive coupling between the bit lines on data reading of the sensing amplifier can be reduced.

This invention belongs to the field of mineral flotation technology, specifically relating to a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system and method. It includes a slurry conditioning cylinder, a separation chamber, and a mineralization cylinder connected in sequence. The slurry conditioning cylinder contains a slurry conditioning pipeline; the separation chamber contains raw ore processing pipelines and middlings processing pipelines; and the mineralization cylinder contains an eddy current mineralization pipeline. The slurry conditioning pipeline, raw ore processing pipeline, eddy current mineralization pipeline, and middlings processing pipeline are connected sequentially. After minerals and flotation reagents are conditioned in the slurry conditioning cylinder to obtain raw ore slurry, it passes through the separation chamber to obtain middlings ore slurry, which then enters the eddy current mineralization pipeline. The middlings ore slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, concentrate is collected at the top of the separation chamber. The mineral flow path designed in this invention enables efficient collisions between minerals of different particle sizes and slurry conditioning reagents, as well as between minerals and air bubbles, achieving effective flotation recovery.

A receiving and transmitting combined transducer based on a relaxor ferroelectric single crystal PMNT belongs to the technical field of underwater acoustic transducers, and comprises a prestress layer, a watertight layer, a cable, a splicing ring and two cover plates, the splicing ring is formed by connecting a plurality of splicing units; each splicing unit comprises two PMNT single crystal trapezoidal strips and two aluminum alloy trapezoidal strips; each splicing unit comprises a positive electrode and a negative electrode; leads led out from the anodes of all the splicing units are connected in parallel to lead out a total lead A, and leads led out from the cathodes are connected in parallel to lead out a total lead B; the prestress layer wraps the outer circumferential surface of the splicing ring; the two cover plates are installed at the two ends of the splicing ring respectively, and the two cover plates and the splicing ring are matched to form an air backing. The watertight layer wraps the peripheries of the two cover plates and the splicing ring; the cable is of a two-core structure and is electrically connected with the main wire A and the main wire B respectively. According to the utility model, the sound source level and the sensitivity of the transducer can be improved, and the working distance of the transducer can be effectively increased.

The present application is applicable to the field of web front-end technology, and provides a sub-package deployment method, system and computer equipment for a web front-end project, including: obtaining a module sub-project, and generating a module sub-project project according to the module sub-project, wherein the module sub-project project includes a main project and at least one sub-project; obtaining a front-end routing table file of the module sub-project, and packaging the front-end routing table file of the module sub-project as an entry file of the sub-project; introducing the entry file packaged by the sub-project into the main project, wherein the main project includes a routing configuration file; modifying the routing configuration file of the main project according to the entry file packaged by the sub-project to obtain a target routing configuration file; and sub-packaging and deploying the sub-project according to the target routing configuration file. The present application can improve development and deployment efficiency and enhance the stability of production applications.

This utility model discloses a high-precision belt weighing device for grain depots, comprising a conveyor frame, a weighing frame, idlers, a weighing sensor, a speed measuring device, a lidar module, an intelligent processing unit, and a support component. The weighing frame and idlers are positioned above the conveyor frame, with the weighing frame installed in the middle region of the conveyor frame. The support component is located at the lower part of the weighing frame and is connected to the weighing sensor via the support component. The weighing frame forms a weighing section on the conveyor frame. The idlers are positioned above the weighing frame and are arranged in several groups along the conveying direction. A conveyor belt is mounted on the idlers for conveying grain materials. The weighing sensor is installed between the weighing frame and the conveyor frame. The lidar module is located at the upper discharge end of the conveyor frame. The speed measuring device is installed at the lower part of the conveyor frame. In summary, this utility model has the advantages of stable overall structure, accurate signal acquisition, high measurement accuracy, strong adaptability, and high degree of intelligence.

The utility model relates to the technical field of automobile steering gear, disclose a kind of noise reduction type automobile steering gear, including rack gear, two pull rods and two ball head pins, the outer wall of rack gear is engaged with steering lever by gear, the both sides of rack gear inner wall are fixedly connected with torque bar, the both sides of torque bar outer wall are respectively connected by hinged member hinged connection with the adjacent two sides of pull rod, the side of pull rod far from rack gear middle part is all connected with ball head pin by hinged member hinged connection, the outer wall of ball head pin upper end is all provided with slotted nut. In the utility model, the anaerobic adhesive used in the connecting place of pull rod and rack and torque bar tightening process ensure the firm and reliable connection, the molybdenum disulfide grease filled in ball head pin ensures its rotation smooth and reduces noise, rubber protective cover and the protective sleeve everywhere effectively isolate vibration, impact and external environment, further reduce noise.

The utility model discloses a wind-proof anti-freezing device for greening nursery stock planting, which belongs to the technical field of nursery stock planting and comprises a first shell, a second shell is fastened on one side of the first shell, arc plates are fixedly connected to the top of the first shell and the top of the second shell, arc elastic pads are fixedly connected to the inner sides of the two arc plates, and the arc elastic pads are fixedly connected to the inner sides of the first shell and the second shell. Supporting frames are fixedly connected to the outer side of the first shell and the outer side of the second shell correspondingly, and movable strips are movably connected to one ends of the two supporting frames in an inserted mode correspondingly. Through the combined action of a first shell, a second shell, an arc-shaped plate and an arc-shaped elastic cushion, the device forms a relatively closed cavity on the outer side of a nursery stock, the situation that rain and snow fall into the cavity and affect the nursery stock in rainy and snowy weather can be effectively avoided, and through the combined action of a first concave frame, a second concave frame, a movable frame, a fixed rod and an inserting groove, the nursery stock is prevented from being damaged. The movable frame can be conveniently clamped into the first concave frame and limited through the fixing rod, and installation and fixation between the first shell and the second shell are completed.

The invention discloses an adhesive tape dividing and cutting machine width adjusting mechanism capable of flexibly adjusting the dividing and cutting width, which is applied to the technical field of adhesive tape dividing and cutting machines and is provided with a linkage type lifting structure, so that a cutter structure is accurately adjusted through the linkage type lifting structure; by means of the arrangement, adjusting operation of the slitting width can be completed within a very short time, due to the synergistic effect of the linkage type lifting structure, it is guaranteed that the slitting width after each time of adjustment can be kept consistent, the slitting precision is improved, and in the production process, the production efficiency is improved. Due to the characteristic, product flaws and waste materials caused by inconsistent slitting width can be reduced, so that the qualified rate of products is improved, the production cost is saved for enterprises, meanwhile, when the cutter structure is damaged, the limitation on the adjusting structure is relieved, an operator can quickly and conveniently pull out the cutter structure for maintenance or replacement, and the production efficiency is improved. Therefore, the downtime of the splitting machine structure is reduced, and the production continuity is guaranteed.

The application discloses an electro-optic crystal electric field sensing device and method based on dual-wavelength differential measurement, relates to the technical field of sensing, and utilizes the port isolation characteristic of a polarization maintaining ring to make incident light emitted by a light source enter from a first port, is output to an electro-optic crystal through a second port, and is returned along an original light path after being reflected by a reflecting sheet, passes through the electro-optic crystal, a collimating lens and the polarization maintaining ring again, and is guided to a third port to be output to a spectrometer, so that bidirectional transmission of the input and output of the light signal in the same optical fiber is realized; the complexity of the electric field sensing system is reduced, so that the cost is reduced; and the single-fiber bidirectional transmission reflection structure realized by the polarization maintaining ring integrates the originally separated input / output light paths into a common path, cancels the polarization state drift caused by environmental disturbance, and thus the measurement accuracy is improved. Therefore, the cost is reduced while the measurement accuracy of the electric field sensing device is ensured.

The invention discloses a large-stroke inertial sensor horizontal inclination decoupling device based on magnetic suspension, which comprises a magnetic suspension mounting seat, a magnetic suspension lower platform is arranged on the magnetic suspension mounting seat, and a magnetic suspension upper platform is arranged above the magnetic suspension lower platform. A guide device for enabling the magnetic levitation lower platform and the magnetic levitation upper platform to linearly move is arranged between the magnetic levitation lower platform and the magnetic levitation upper platform; a sensor is arranged above the magnetic suspension upper platform; the flexible hinge assembly is directly or indirectly connected with the upper magnetic levitation platform, and the length direction of the flexible hinge assembly and the moving direction of the lower magnetic levitation platform and the upper magnetic levitation platform are both in the left-right direction. The invention discloses a structure for reducing a horizontal tilt coupling problem of an inertial sensor at a low frequency, and aims to effectively alleviate the coupling problem of the inertial sensor caused by horizontal tilt in a low-frequency environment.