153 results about "Shielding block" patented technology

The invention discloses a maintainable semi-fixed plug-in structure of a compact fusion reactor and an assembling and maintaining method. The plug-in structure comprises a fixed assembly, a first wall assembly, a shielding block assembly, a maintainable assembly and a sealing flange assembly. The fixing assembly is fixedly installed in a vacuum chamber neck tube, the shielding block assembly is inserted into the fixing assembly, and a shielding block cooling pipeline is arranged in the shielding block assembly. The first wall assembly is detachably fixed to the end face, exposed out of the vacuum chamber neck tube, of the shielding block assembly, and a first wall connecting tube is fixed to the end, facing the vacuum chamber neck tube, of the shielding block assembly. The maintainable assembly comprises a pipeline assembly, a support assembly and a maintainable subsystem support penetrating through the shielding block assembly to be inserted into the vacuum chamber neck tube. The pipeline assembly is inserted into the support assembly, and the pipeline assembly, the shielding block cooling pipeline and the first wall cooling pipeline are sequentially connected. The sealing flange assembly is detachably connected with the vacuum chamber neck tube. The requirement for the installation space is relatively small, quick-wear parts of the plug-in can be independently maintained, and the maintenance cost is reduced.

A system and a method for a pulsed neutron logging tool. The pulsed neutron logging tool may include a pulsed neutron generator for generating one or more neutrons, one or more gamma ray scintillator detectors disposed in a detection area, a shielding block that separates the pulsed neutron generator from the one or more gamma ray scintillator detectors, and a shielding layer. The pulsed neutron logging tool may further comprise an information handling system communicatively connected at least in part to the pulsed neutron logging tool. The information handling system is configured to create a gamma ray spectrum from the one or more gamma rays detected by the one or more gamma ray scintillator detectors, remove a background from the gamma ray spectrum to form a peaks-only spectrum, and compare one or more peaks-only elemental standards to the peaks-only spectrum to determine an elemental weight and yield.

A display panel. The display panel comprises a plurality of first covering portions, a plurality of supporting portions, and a plurality of light-shielding portions. The supporting portions are disposed on the sides of the first covering portions away from a driving backplane; a supporting gap is formed between two adjacent supporting portions on a same first covering portion; a light-shielding portion is disposed in the supporting gap; and light-transmitting openings are formed between the sides of the light-shielding portions close to each other. Before light-shielding blocks are cured to form the light-shielding portions, due to the supporting function of the supporting portions, the problem that the light-shielding blocks are stripped from the first covering portions during flushing is avoided. The shapes and sizes of the light-shielding portions are basically the same. Therefore, the uniformity of the shapes and sizes of the light-transmitting openings is good, and the reflectivity of light in the light-transmitting openings is the same, thereby alleviating alternately bright and dark vertical line defects on the display panel. The present invention further provides a display device comprising the display panel.

The utility model discloses a water cooling pool for a hot galvanizing process, and relates to the technical field of water cooling pools, the water cooling pool comprises a box body, a first motor is fixedly arranged at the lower end of the box body in the vertical direction, an output shaft of the first motor penetrates through the box body and is coaxially and fixedly provided with a rotating shaft, the rotating shaft is provided with a plurality of rotating rods in the circumferential direction, and connecting pieces are arranged between the rotating rods and the rotating shaft; a plurality of shielding blocks are hinged to the interior of the box body in the circumferential direction and arranged in the vertical direction, rotating pieces are arranged between the shielding blocks and the box body and used for adjusting the angles of the shielding blocks, a circulating assembly is arranged on one side of the box body and used for replacing water in the box body, and a collecting device is arranged in the box body and used for collecting residues. The collecting device is located below the rotating rod, and a supporting piece is arranged in the box body and used for supporting the workpieces. The cooling device has the effect of improving the workpiece cooling efficiency.

The utility model relates to the technical field of automobile brake pumps, in particular to an efficient heat dissipation automobile brake pump which comprises a brake pump body, a plurality of first cooling fins are arranged on the surface of the brake pump body in the front-back direction, and the surface of the brake pump body is connected with a ventilation hood through a plurality of second installation blocks. A semiconductor chilling plate is arranged on the inner wall of the rear portion of the ventilation hood, a second fan is rotationally connected to the inner wall of the ventilation hood through two second fan supports, a shielding block is arranged at the front end of the first mounting block, and a cold air control device is arranged outside the shielding block. After the semiconductor chilling plate is powered on, refrigeration can be conducted on the cold end face of the semiconductor chilling plate, when the brake pump body works, the second fan is started, and cold air can be blown out through the second fan. By means of the heat dissipation mode, corrosion of a shell of the brake pump body cannot be caused, and the service life of the brake pump cannot be affected.

The invention provides a high-energy ray detection device. The high-energy ray detection device comprises a high-energy ray source, a stack structure, a shielding block, a reflecting mirror, a detector and a light shield, the stack structure, the shielding block and the reflector are arranged in the light shield, and the high-energy ray source and the detector are arranged outside the light shield; the high-energy ray source emits rays to the first side surface based on the first light through hole; the stack structure comprises n stacks of different response matrixes, the stacks are arranged in the grooves of the second side face from top to bottom, and rays are received through the through hole units of the first side face and converted into visible light; visible light is emitted from the second side surface, is received by the reflector and is reflected to the detector based on the second light through hole, and is converted into an electric signal by the detector. The invention also provides a high-energy ray energy disperse spectroscopy, which comprises a computer and a high-energy ray detection device, and the computer is electrically connected with a detector of the high-energy ray detection device and performs spectrum unfolding. The device has the advantages of being high in spectrum unfolding stability, high in measurement precision, low in spectrum unfolding uncertainty and compact in structure.

The invention discloses a switch source device, a radiotherapy head and radiotherapy equipment, relates to the technical field of medical equipment, and is used for solving the technical problem that the switch source device of the radiotherapy equipment in the related technology cannot realize source switching in different application scenes. The switch source device is applied to the radiation treatment head, and the radiation treatment head comprises a shielding body, a collimation assembly arranged on the inner side of the shielding body, and a source carrying body arranged between the shielding body and the collimation assembly. The source carrier is used for arranging a radioactive source; the switch source device comprises a first switch source assembly, the first switch source assembly comprises a shielding block and an electromagnetic driving assembly, and the shielding block is used for shielding rays emitted by a radioactive source or enabling the rays emitted by the radioactive source to pass through a collimation assembly; and the electromagnetic driving assembly is connected with the shielding block and is used for driving the shielding block to move along the longitude direction of the shielding body or the collimation assembly and switching between a source closing position and a source opening position so as to realize source switching.

The utility model discloses a coating material curing device, and belongs to the technical field of coating material curing. The device mainly comprises a curing box body, a curing cavity and four sets of supporting columns are arranged in the curing box body, the supporting columns are installed in the curing box body, sliding grooves are formed in the two sides of each supporting column, and sliding seats are installed on the sliding grooves in a sliding mode; the threaded rod is arranged on the sliding seat in a threaded mode, and a threaded hole is formed in the supporting column; the sliding rail is installed between the two sets of sliding seats, sliding blocks are installed on the sliding rail in a sliding mode, a partition plate is fixedly connected between the two sets of sliding blocks, and notches are formed in the two sides of the partition plate; and the two groups of supporting units are mounted in the partition plate. According to the coating material curing device, through arrangement of the supporting columns, the sliding grooves, the sliding seats, the threaded rods, the sliding rails, the shielding blocks, the sliding blocks, the cushion rods, the notches and the supporting units, the distance between the partition plates is changed, and the partition plates can properly contain workpieces.

This utility model relates to the technical field of pigment mixing equipment, specifically a premixing anti-splashing device for neutral pen pigment raw materials. It includes a disperser, which comprises a lifting device. The lifting device has a drive structure at its top, and a transmission shaft is connected to the front of the drive structure. The drive structure drives the transmission shaft to rotate. A dispersing disc is located at the bottom of the transmission shaft, and a baffle assembly is located in the middle of the transmission shaft. This utility model, by setting dispersing blades on the outside of the dispersing teeth, can drive the material outside the dispersing teeth to move downwards, preventing the material from perpendicularly contacting the inner wall of the mixing tank and reducing splashing. By setting the baffle assembly, the baffle shield blocks the upward splashing material, and the centrifugal force of the rotation causes the material to fly out from the edge of the baffle shield, preventing material adhesion. The baffle shield is conical, allowing the material to move obliquely downwards, preventing secondary splashing. The height of the baffle shield is adjustable to accommodate the mixing of materials of different volumes.

The utility model discloses a glove box bottom feeding structure which comprises a glove box body, a glove hole is formed in the front side wall of the glove box body, operation gloves are fixedly arranged in the glove hole, and a bottom hole is formed in the bottom of the glove box body. By means of the structure, in the feeding process, the top electric rod is started, the shielding cover can be pushed out of the bottom hole, sealing is formed between the bottom of the top shielding cover, the bottom of the shielding block and the bottom of the shielding door and the glove box body, the bottom of the shielding cover is located outside the glove box body, the rotating container is placed in the shielding cover, then the small electric rod is started, the shielding door moves downwards, and the glove box body is sealed. And at the moment, sealing is formed between the top of the shielding door and the glove box body, then the shielding cover is contained in the glove box body, feeding is completed, operation is easy, the sealing performance is good, and the glove box body and the outside are in the sealing condition in the whole feeding process.

The utility model relates to the technical field of motorcycle cover locks, and discloses a wear-resistant motor vehicle cover lock which comprises a shell and a lock groove, the lock groove is formed in the surface of the shell, a shielding structure is arranged on the surface of the shell and comprises a connecting plate, the surface of the connecting plate is connected with the surface of the shell, a sliding groove is formed in the surface of the connecting plate, and the locking groove is arranged in the sliding groove. The inner wall of the sliding groove is slidably connected with a sliding block, and the surface of the sliding block is connected with a shielding block. The inner walls of the sliding grooves are connected with balls, and the balls are made of steel. The surface of the connecting plate is connected with a guide block, and the cross section of the guide block is triangular. The utility model solves the problem that the motor vehicle cover lock is installed and prevented from falling off, and solves the problem that the normal use of the cover lock is influenced as the damaged cover lock is inconvenient to replace quickly by adopting a fixed connection mode in the prior art.

The invention discloses a fermentation device for duck feed production, and particularly relates to the technical field of duck feed fermentation granulation, the fermentation device comprises a fermentation barrel, a bracket is mounted on the outer side of the fermentation barrel, a stirring part is mounted on the fermentation barrel, a mouth-shaped block is fixedly connected to the outer side of the fermentation barrel, a scattering mechanism is mounted on the outer side of the mouth-shaped block, and the scattering mechanism comprises a shielding block; the shielding block is arranged on the outer side of the mouth-shaped block, a rotating part and a first material scattering part are installed on the shielding block, the first material scattering part comprises a first round pipe, the end, away from the first motor, of the first round pipe is movably connected with a second round pipe, the outer side of the second round pipe is fixedly connected with a second gear, and a grinding part is installed at the end, away from the first round pipe, of the second round pipe. Through the arrangement of the rotating part and part of the first material scattering part, the material scattering amount is controlled, so that the situation that a dry powder binder and part of dry feed are in direct contact with wet feed, so that the dry powder binder and the part of dry feed are quickly caked, and non-uniform stirring is caused is prevented by adopting a method of scattering the feed in a small amount for multiple times.

This utility model provides a blackboard writing device based on a pluggable buffer acquisition screen structure, including a bracket, a fixing groove, an adjustable hanging fixing frame structure, a pluggable buffer acquisition screen structure, a hanging sliding fixing plate structure, and a protective film. The bracket, fixing groove, connecting frame, L-shaped hanging rod, hanging hole, and threaded ring are designed to work together to facilitate the hanging of the L-shaped hanging rod by inserting expansion bolts through the hanging hole, making blackboard installation easier. The bracket, fixing groove, protective film, touch screen, L-shaped fixing frame, sliding hole, fixing bolt, and shielding block are designed to protect the touch screen during data writing and acquisition by placing the protective film on the right side of the touch screen.

The utility model relates to the technical field of heat preservation blankets, in particular to a novel intelligent heat preservation blanket which comprises an electric heating element, an installation assembly and a functional assembly, the installation assembly comprises heat conduction wires, the two heat conduction wires are fixed on the outer surface of the electric heating element, and a blanket surface is fixedly arranged on the outer surface of the electric heating element. A plurality of positioning blocks are fixedly arranged on the outer surface of the blanket surface, an outer cover is arranged on the outer surface of the blanket surface, and a shielding block is rotatably arranged on one side of the outer cover. The blanket surface is arranged on the outer surface of the electric heating element, the outer cover is arranged on the outer surface of the blanket surface, and a first hook-and-loop fastener is matched with a second hook-and-loop fastener; a shielding block is fixed above a rectangular hole, the intelligent heat preservation blanket can be detached and cleaned conveniently, the heat preservation performance and the waterproof performance of the blanket surface are improved through cooperation of a first heat preservation layer, a second heat preservation layer, a first waterproof coating and a second waterproof coating, and the functionality of the outer cover is improved through an anti-static layer, a sterile layer and a protective layer.

The utility model discloses a door handle with a switch indication function, which comprises a door handle body and a panel, the door handle body is rotatably connected with the panel, the door handle body comprises a supporting part and a connecting part, the connecting part is inserted into the panel and is rotatably connected with the panel, a channel is arranged in the connecting part, and the supporting part is fixedly connected with the panel. A switch indicating device sleeves one end, far away from the panel, of the channel, the switch indicating device comprises a lantern ring fixed in the channel, a first display part and a second display part are arranged on one surface, far away from the panel, of the lantern ring, a rotating shaft is rotatably connected in the lantern ring, and a shielding block is arranged at one end, far away from the panel, of the rotating shaft; the shielding block is located on the side, away from the panel, of the lantern ring and provided with a visible part, and an inserting groove is formed in the end, close to the panel, of the rotating shaft. According to the utility model, the personal privacy is fully respected, the use convenience and safety performance are greatly improved, and more intimate and secure use experience is brought to users.

The invention discloses a vehicle lamp light shield capable of being quickly positioned, and belongs to the field of vehicle lamp light shields. The vehicle lamp light shield capable of being rapidly positioned comprises a light shielding block, a second mounting frame is arranged at one end of the light shielding block, a first mounting frame is arranged at the lower end of the outer portion of the second mounting frame, and second anti-sliding blocks are transversely and evenly distributed at the lower end of the second mounting frame. The problems that an existing middle sliding groove mechanism has the final locking function at the same time, so that when locking torque is applied, locking force can directly act on an adjusting rail, and uncontrollable micro-deviation of the calibrated position of a light shield assembly is extremely likely to happen are solved. The second mounting frame and the first mounting frame can be primarily fixed through mutual limitation of the first anti-skid block and the second anti-skid block, and during primary fixing and insertion of the bolt into the connecting column, the first anti-skid block and the second anti-skid block are mutually limited, so that micro deviation caused by rotation of the bolt is avoided, and misalignment of the shading cut-off line is avoided.

The utility model provides a prefabricated hollow brick, which relates to the technical field of wall bricks and comprises a hollow brick body, a wiring groove is arranged on the surface of the hollow brick body, lap joint grooves are arranged on two sides of the wiring groove on the surface of the hollow brick body, lap joint blocks are embedded in the lap joint grooves in a clamping mode, and the lap joint blocks are connected with the hollow brick body in a clamped mode. In the process that the hollow brick body is used for building a wall, the lap joint blocks and the shielding blocks on part of the hollow brick body are stripped from the wiring grooves and the lap joint grooves, after the whole wall is built, a longitudinal wiring groove which is in butt joint with the same straight line is reserved in the surface of the whole wall, and the wiring groove can be used for embedding electric wires later. The surface of a built wall does not need to be grooved in the later period, and accidental damage to the hollow brick body is effectively avoided.

An alarm device for a magnetic resonance imaging (MRI) system includes a main body (10), a first response unit (21), and a shield (30). The first response unit and the shield are disposed on the main body. The first response unit is capable of transmitting a first radio frequency signal upon receiving electromagnetic waves of a set frequency. The shield is capable of switching between a first relative position and a second relative position relative to the first response unit. When the shield is in the first relative position, the shield blocks the first response unit to prevent it from receiving electromagnetic waves of the set frequency. When the shield is in the second relative position, the shield avoids the first response unit to allow it to receive electromagnetic waves of the set frequency. This alarm device has high reliability. Furthermore, an alarm system for an MRI system including this alarm device is also provided.

The application relates to the field of high-speed communication and information network technology, in particular to a space expandable photoelectric information processing device, which comprises a device body, the device body comprises a power board module, an information processing board module, an interface board module, an expansion information processing module and a processing board heat dissipation top cover, a shielding block is arranged in the interface frame, and the device body comprises the processing board heat dissipation top cover. The application can not only improve the complex processing technology, overcome the deficiencies of the existing technology in the aspects of efficiency, cost, precision, material utilization rate, environmental protection and the like, improve the modularization and expandability of the system, improve the photoelectric data processing capacity, realize high integration and small and light design, help improve the heat dissipation performance and environmental adaptability of the device, and help unify the information processing of multiple types of photoelectric loads.

The present invention discloses a detection device for detecting the orientation of a radioactive source, comprising a circular shell, in which a main control board, a detector and a shielding block are arranged. The shielding block is composed of an upper shielding lead block and a lower shielding lead block that are fixedly connected. The upper shielding lead block and the lower shielding lead block are both arc-shaped and respectively placed on both sides of the center line of the shielding block, and the thickness of the upper shielding lead block gradually increases from left to right, while the thickness of the lower shielding lead block gradually decreases from left to right. The detector is provided with two, namely an upper detector and a lower detector, both of which are cylindrical and arranged up and down, and respectively placed in a semi-enclosed space formed by the upper shielding lead block and the lower shielding lead block. Each detector is connected to the main control board, used for collecting gamma rays in the environment, and generating a number of pulses and transmitting them to the main control board. The main control board judges the orientation of the gamma radiation emitted by the radioactive source according to the number of pulses fed back by each detector and the lead attenuation thickness corresponding to the collected gamma rays.

The utility model relates to the technical field of lithium batteries, in particular to a low-temperature protection structure for a lithium battery, which comprises a lithium battery body, a mounting base is mounted at the lower end of the lithium battery body, a support plate is mounted on the inner side wall of the lithium battery body, and adaptive grooves are formed in the left and right inner walls of the support plate. A first circulating groove and a second circulating groove are sequentially formed in the surface of the supporting plate from left to right; and a first telescopic rod is installed on the surface of the right side of the fixing block, and a first shielding block is installed at the end, away from the fixing block, of the first telescopic rod. The first circulating groove and the second circulating groove can be opened, then air can be blown to the lower end of the lithium battery body, and the supporting plate is not in contact with the bottom end of the lithium battery body, so that the air can be integrally in contact with the lower end of the lithium battery body, the integral contact effect is relatively good, and the integral cooling effect is relatively good.

The utility model discloses a gas-water separation device for coal bed gas exploitation, which comprises a shell, a feed port, an exhaust port, a water outlet and a separation plate, a cleaning device is arranged, a fixed block is driven by an electric push rod to move, so that the fixed block cancels the fixing effect on a shielding block, then the shielding block is taken down, a motor drives a screw rod to rotate, and the separation plate is driven by the screw rod to rotate. The screw rod rotates to drive the movable block to move, the movable block moves to drive the filter plate to move, and the filter plate moves to push residual particles out of the shell. Through the arrangement, the interior of the shell can be quickly cleaned, the situation that the residual particles are accumulated to affect the drainage effect is avoided, normal drainage is ensured, the separation efficiency is improved, and the service life is prolonged.

The utility model relates to a shield block grabbing tool and a duct piece assembling machine, and the shield block grabbing tool is installed on the duct piece assembling machine and used for grabbing shield blocks; the shield block grabbing tool comprises a supporting frame, and the supporting frame is used for installing the shield block grabbing tool on the duct piece assembling machine. The guiding pieces are oppositely arranged at the two ends of the supporting frame in the first direction; the telescopic grabbing pieces are arranged on the opposite sides of the guiding pieces correspondingly, and the grabbing pieces are arranged in a staggered mode in the second direction, so that the extending ends of the grabbing pieces can grab and release the shield body blocks through guiding of the opposite guiding pieces; the first direction and the second direction are orthogonal. The shield block grabbing tool can be installed on a duct piece assembling machine through the supporting frame, the guiding piece guides the output end of the grabbing piece, and therefore the grabbing piece grabs and releases shield blocks.

A connector blind plug assembly includes a shield blocking component and a port blocking component. The shield blocking component mates with a rear end of a cylindrical shield of a connector. The shield blocking component blocks a rear end opening of the cylindrical shield and prevents electromagnetic leakage. The port blocking component cooperates with a sealing ring to block and seal a rear port of an installation hole of a connector housing. The connector blind plug assembly replaces a cable assembly of the connector and is inserted into the installation hole of the connector housing to block the installation hole.

The present application relates to the field of electronic devices, and discloses an electronic device. The electronic device comprises a first shell, a second shell, a rotating shaft mechanism, a flexible display screen, a first shielding edge, a second shielding edge, and two shielding assemblies. The rotating shaft mechanism comprises two end parts which are oppositely arranged; the flexible display screen comprises a first fixed area, a second fixed area, and a bending area; the first shielding edge covers the edge of the first fixed area, and the second shielding edge covers the edge of the second fixed area; each shielding assembly comprises a cover body, a shielding block, and a stabilizing piece, the cover body is fixed to an end part, the shielding block is connected to the cover body, and the shielding block covers an edge of the bending area; the stabilizing piece is connected to the shielding block, the thickness of the stabilizing piece is smaller than that of the shielding block, one end of the stabilizing piece is sandwiched between the first shielding edge and the first fixed area, and the other end of the stabilizing piece is sandwiched between the second shielding edge and the second fixed area. The shielding assemblies can shield the edges of the bending area of the flexible display screen of the electronic device, thereby improving the use reliability of the electronic device.

A system and a method for a pulsed neutron logging tool. The pulsed neutron logging tool may include a pulsed neutron generator for generating one or more neutrons, one or more gamma ray scintillator detectors disposed in a detection area, a shielding block that separates the pulsed neutron generator from the one or more gamma ray scintillator detectors, and a shielding layer. The pulsed neutron logging tool may further comprise an information handling system communicatively connected at least in part to the pulsed neutron logging tool. The information handling system is configured to create a gamma ray spectrum from the one or more gamma rays detected by the one or more gamma ray scintillator detectors, remove a background from the gamma ray spectrum to form a peaks-only spectrum, and compare one or more peaks-only elemental standards to the peaks-only spectrum to determine an elemental weight and yield.

The utility model belongs to the technical field of sampling devices, and particularly relates to a coal mine underground drilling sampling device which comprises a drilling board. A mounting groove is formed in the bottom of the drilling plate, and a first motor is fixedly connected to the inner top wall of the mounting groove; through the arrangement of the positioning mechanism, the sampling mode can be replaced, the feeding groove can be sealed conveniently after sampling is finished, the integrity of a sampled sample is guaranteed, the sampling efficiency is improved, the device can be moved to a coal mine well, the first motor is started to drive the fixing plate and the drilling pipe to rotate to drill the sample, and the sampling efficiency is improved. After sampling is completed, a second motor can be started to drive a second gear to rotate, the second gear drives two first gears to rotate, the first gears drive a lead screw to rotate, the lead screw rotates to drive a shielding block to move downwards, and therefore the shielding block shields and protects the feeding groove; and a sampled sample is blocked in the drilling pipe.

The utility model relates to the technical field of pigment production, in particular to an intelligent proportioning feeding device for rubber and plastic pigment production, which comprises a box body, a control panel, support legs, a discharge pipe, a valve and a control device, the control panel is arranged on the surface of the box body, the support legs are fixedly connected with the lower surface of the box body, the discharge pipe is fixedly connected with the surface of the box body, and the valve is arranged on the control device. The valve is arranged on the surface of the discharging pipe, the control device is arranged on the upper surface of the box body and comprises a lower feeding pipe, the lower feeding pipe is fixedly connected with the inner wall of the box body, the upper surface of the lower feeding pipe is fixedly connected with a connecting ring, the inner wall of the connecting ring is fixedly connected with a first shielding block, and a rotating groove is formed in the surface of the connecting ring; and the inner wall of the rotating groove is rotationally connected with a rotating ring. According to the pigment adding device, the control device is arranged, so that the flow speed of the feeding pipe is convenient to control, pigments with different proportions can be added at the same time, the proportion can be flexibly adjusted, the feeding pipes with different models do not need to be replaced, and the convenience of the device is effectively improved.

The utility model belongs to the field of earphones, and particularly relates to a magnetic type folding headphone which comprises a head beam, earphone units are rotatably connected to the left side and the right side of the bottom of the head beam, magnetic blocks are fixedly connected to the centers of the sides, away from each other, of the two earphone units, and a magnetic force blocking assembly is arranged in the head beam. An arrangement assembly is arranged at the rear end of the head beam. According to the utility model, after the earphone unit is taken down, an operator can push the friction block on the surface of the leather sleeve, so that the shielding block is blocked between the magnet and the magnetic block, at the moment, the attraction of the magnet to the magnetic block is reduced, and the earphone unit can be conveniently taken down without being influenced by the magnet; a user can wear the earphone unit more conveniently and rapidly subsequently, and when the earphone unit is not used, the data line can penetrate through the three connecting rods in sequence, so that the data line is arranged in order, and the situation that the cable is wound is avoided.

The invention belongs to the technical field of shield tunnel construction, and discloses a shielding curtain blocking effect detection method and system for a shield tunnel underneath passing underground structure group, a terminal and a storage medium, and the method comprises the steps: obtaining a first construction parameter of the shield tunnel and a structure parameter of an underground structure; based on the first construction parameters and the structure parameters, constructing a numerical model of the target plot; determining the type of a constitutive model according to the material parameters of the target plot, and simulating the construction process of the shield tunnel in the numerical model based on the first construction parameters and the constitutive model; obtaining a cross section image of each underground structure at a preset construction moment, calculating the ellipticity of a cross section in each cross section image, and judging whether a blind blocking effect exists among all the underground structures according to the ellipticity; according to the ellipticity, a blind blocking effect coefficient between the underground structures with the blind blocking effect is calculated and output; according to the invention, the blocking effect of the blind can be quantified.