51results about How to "Same structure" patented technology

The invention discloses a motor control device and an air conditioner, and the motor control device comprises a position / rotation speed estimation unit which estimates a rotor position and a rotor rotation speed of an AC motor driven by an inverter according to a detection current (iq, id) on a control shaft and a voltage command value (Vd *, Vq *) inputted to the inverter; and a current ripple suppression controller for estimating compensation currents (iqcmp, idcmp) for compensating the current command values (iq *, id *) on the control axis from the detection currents (iq, id) on the control axis and the mechanical angle of the rotor, respectively, so as to reduce position observation errors caused by current control fluctuations. The influence of current pulsation on position observation can be suppressed, and the motor position observation accuracy is improved.

The invention relates to the technical field of batteries, and discloses a riveting top cover, a battery cell cover plate and a battery cell. Wherein the riveting top cover comprises a riveting block and a pole column, the riveting block is provided with a through hole, the through hole comprises a matching hole, a secondary riveting hole and a main riveting hole which are coaxially arranged in sequence, the pole column comprises a base and a protruding part arranged on the base, the protruding part is provided with a matching section, a secondary riveting section and a main riveting section which are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole, and the matching section, the secondary riveting section and the main riveting section are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole. The first annular cavity is reserved between the secondary riveting section and the secondary riveting hole in the pre-assembly state, the second annular cavity is reserved between the main riveting section and the main riveting hole, and the first annular cavity and the second annular cavity respectively reserve material expansion spaces for the secondary riveting section and the main riveting section. Therefore, part of the first annular cavity can be filled with the secondary riveting section after the secondary riveting section expands under the action force, the phenomenon that the riveting block is locally expanded or deformed due to expansion of the secondary riveting section in the traditional riveting process is avoided, and the yield of the riveted top cover is improved.

The invention relates to the technical field of steel plate packing, and discloses an automatic color steel plate packing device which comprises a conveying mechanism, a color steel plate body is placed on the top of the conveying mechanism, a winding roller is fixedly connected to the back face of the conveying mechanism, a packing belt is wound around the outer side of the winding roller, and a bundling assembly is arranged in the middle of the conveying mechanism. The conveying mechanism conveys a to-be-bundled position of a color steel plate body to the inner side of the bundling assembly, and the bundling assembly drives a packing belt to be spirally wound on the outer side of the color steel plate body by multiple circles; by arranging the bundling assembly, the outer side of the color steel plate body is bundled by multiple circles through the packing belt, the bundling strength is enhanced, and the color steel plate body is prevented from being collided, cut off and bundled in the transportation process.

The invention discloses a two-dimensional organic / inorganic heterojunction photoelectric nerve component and a preparation method thereof, and belongs to the technical field of photoelectric devices. According to the invention, a TMDC material MoS2 is transferred to a substrate through a mechanical stripping method, then a film electrode is plated on a MoS2 layer through an electron beam lithography method, and finally a single-layer Me-PTCDI crystal is epitaxially grown on the MoS2 layer through a back-off method to form the heterojunction. Due to the formation of the MoS2 / Me-PTCDI heterojunction, the photoelectric nerve device has excellent photosensitivity and light adaptability, and can simulate reactions of retinal essential photosensitive ganglion cells under different illumination; the device can make current change under the stimulation of light pulses so as to simulate the generation and action of human melatonin, and can realize visual adaptation in bright and dark environments under the regulation and control of grid voltage, and the device has a wide application prospect in the field of automatic driving due to the corresponding characteristics.

The utility model relates to a test device convenient for observing the soil loosening effect of a fertilizer. Comprising at least one cylinder used for containing fertilizer and soil and a detachable funnel screen piece matched with an opening in the top of the cylinder. The detachable upper barrel cover is matched with the opening in the top of the barrel body; the cylinder body is made of a transparent material, and scales convenient for observation are arranged on the outer surface of the transparent cylinder body; the device has the advantages that the change of a flocculation aggregate structure in the soil falling process can be directly observed, meanwhile, the soil porosity can be analyzed by observing the height of a soil column, and the device is reasonable in design, easy to clean and convenient to carry.

According to the parallel robot mechanism based on the metamorphic four-bar mechanism, the working state of the metamorphic parallel mechanism can be changed only through mode switching of the metamorphic four-bar mechanism, and any movement 3T, one-rotation-three-movement 1R3T, two-rotation-three-movement 2R3T and three-rotation-three-movement 3R3T in the space can be switched; the three branch chains are completely the same in structure and easy to manufacture, meanwhile, the system complexity is greatly reduced, and the three-branch-chain parallel mechanism can be applied to the industrial environment with the tail end posture requirement changing and is suitable for various application scenes.

The invention discloses a cutting chain type transverse shaft type cutting mechanism suitable for a coal roadway and a half-coal-rock roadway and a heading machine. The cutting mechanism comprises a main machine frame, a motor, a cutting chain, a left cutting head and a right cutting head, the motor, the cutting chain, the left cutting head and the right cutting head are installed on the main machine frame, the left cutting head and the right cutting head are located on the two sides of the cutting chain respectively, and the motor drives the cutting chain to rotate and drives the left cutting head and the right cutting head to rotate; wherein a plurality of middle cutting teeth are distributed on the cutting chain; a plurality of left cutting teeth are distributed on the left cutting head; a plurality of right cutting teeth are distributed on the right cutting head; at least part of the middle cutting picks are matched with the left cutting picks to form a spiral line shape, and at least part of the middle cutting picks are matched with the right cutting picks to form a V shape. The problem that an existing cutting mechanism is low in cutting efficiency is solved.

The utility model discloses a wood board carrying clamp which comprises a fixing plate, and a stand column is arranged on the bottom face of the fixing plate. The fixed clamping assembly comprises a mounting plate arranged on the fixed plate and a fixed clamping piece arranged on the mounting plate, and the fixed clamping piece is used for adsorbing the wood plate; the movable clamping assemblies are arranged on the two sides of the fixed clamping assembly, and each movable clamping assembly comprises a sliding piece arranged between the stand column and the mounting plate and a movable clamping piece mounted on the sliding piece; wherein the sliding part is provided with a plurality of movable clamping parts, the movable clamping parts are connected in series through a connecting rod mechanism, and the sliding part can drive the distance between the movable clamping parts to be increased or decreased at the same time. The movable clamping pieces connected in series through the connecting rod mechanism are driven by the sliding piece to move, so that the distance between the movable clamping pieces can be adjusted to adapt to wood boards of different specifications, clamping and carrying work is completed, and the clamp has the advantages of being simple in structure and high in practicability.

The utility model belongs to the technical field of gantry center adjusting devices, and particularly relates to a gantry machining center adjusting device for metal product production, which comprises a base, portal frames and fixed bottom plates, the portal frames are arranged on two sides of the base, a ventilation and heat dissipation mechanism is arranged in the base, and the fixed bottom plates are fixedly connected to the front side and the rear side of the base. Adjusting mechanisms are arranged on the two sides of the fixed bottom plate. The adjusting mechanism comprises a left adjusting unit and a right adjusting unit; the gantry machining center adjusting device comprises a left adjusting unit and a right adjusting unit, and the left adjusting unit comprises a connecting block, a first connecting strip, a limiting block, a second connecting strip, a crank, a supporting strip, a third connecting strip, a first L-shaped support, a second L-shaped support, a first sliding block, a lead screw, a workbench, a supporting frame and a fourth connecting strip. And the structures are ensured to be the same, so that the accurate adjustment of the workbench in the vertical direction is realized.

This utility model discloses a coating machine for processing silicone protective film, including a coating frame, a transmission roller group, a coating seat, a pressing mechanism, a feeding end seat, a feeding mechanism, a discharge end seat, and a winding mechanism. The transmission roller group is arranged on the surface of the coating frame. A coating seat is arranged on one side of the top surface of the coating frame. A pressing mechanism is arranged on one side of the coating seat. A feeding end seat is installed on one side of the pressing mechanism. A feeding mechanism is arranged above the surface of the feeding end seat. A discharge end seat is arranged below one side of the outer wall of the coating frame. A winding mechanism is arranged above the surface of the discharge end seat. The feeding mechanism and the winding mechanism have the same structure. A traction roller is installed at one end of the coating frame. This silicone protective film coating machine improves coating efficiency and uniformity. The connection design between the various components is reasonable, facilitating disassembly and cleaning. In particular, the identical structure of the feeding mechanism and the winding mechanism makes maintenance simpler.

The invention relates to the technical field of vehicle-mounted hydrogen storage cylinder installation, and discloses a vehicle-mounted hydrogen storage cylinder frame structure which comprises a gas cylinder frame, a supporting mechanism is arranged at the bottom of the gas cylinder frame and used for connecting the gas cylinder frame and a chassis girder, and a fixed installation unit and a plurality of movable installation units are sequentially arranged in the gas cylinder frame from bottom to top. The fixed mounting unit is fixedly connected with the gas cylinder frame, the movable mounting unit is detachably connected with the gas cylinder frame, and the fixed mounting unit and the movable mounting unit are both used for fixing gas cylinders. According to the technical scheme, the size and the weight of the gas cylinder frame can be reduced, so that the structure of the gas cylinder frame is more compact, the dynamic performance, the stability and the flexibility of a vehicle are not affected, when a cylinder valve and a tail valve of a gas cylinder are connected, the coaxiality and the size precision of all connecting positions can be conveniently controlled, and the reliability of the vehicle is improved. The first-pass yield of the hydrogen sealing performance is improved; and meanwhile, repair and maintenance are convenient, and the safety in the installation process can be improved.

The present application belongs to the technical field of liquid overpressure energy recycling in process industry, and discloses a self-driven double-rotating disc type energy recycling device, which comprises a first cylinder and a second cylinder which are symmetrical and connected in the same structure, and the internal space of the first cylinder and the second cylinder is provided with a special-shaped shaft, a stator, a first rotating disc, a second rotating disc, a first sleeve and a second sleeve which are coaxially arranged; the first rotating disc and the first sleeve are located at one end of the stator, and the second rotating disc and the second sleeve are located at the other end of the stator; the first sleeve and the second sleeve are fixedly connected with the stator through bolts, and the first rotating disc and the second rotating disc are coaxially and staggeredly connected at both ends of the stator through the special-shaped shaft. Through the technical measures of circumferential inflow impact driving double-rotating disc coaxial rotation movement and pressure exchange of high and low pressure fluids in the stator channel, the present application realizes independent operation of rotary switching and pressure exchange, better dynamic balance performance and other effects, which is beneficial to improve the operation stability and efficiency of the device, and is easy to realize engineering amplification of the treatment capacity.

The present invention discloses a power transmission and distribution connector and a power transmission and distribution connection device, wherein the connector includes a main body and a wiring terminal arranged in the main body, the main body includes a front connector and a rear connector, wherein the wiring terminal is arranged in the front connector; the front connector and the rear connector are connected together by a connection structure, the wiring terminal is provided with a wiring portion connected to a power line at an end corresponding to the rear connector, and the rear connector is provided with a power line through hole at an end away from the front connector; when the front connector and the rear connector are not connected, the wiring portion of the wiring terminal is exposed. The power transmission and distribution connector of the present invention is very convenient to connect, and at the same time, the connection position between the power line and the wiring terminal in the connector is located inside the connector, which is convenient for sealing protection and increases safety.

A heating roller structure and method with different temperature sections, comprising a roller shaft, a roller ring, a heating ring, an insulation ring and a heating tube. The roller shaft axially passes through the roller ring, the heating ring and the insulation ring and is connected with them to form a roller body. The insulation rings are spaced between the roller ring and the heating ring to divide the roller body into a folding heating section, a hot line heating section and an insulation section. The heating tube passes through the roller body to heat the folding heating section and the hot line heating section. The heating tube adopts a segmented structure, and a temperature sensor is used to detect the temperature of the folding heating section and the hot line heating section. The temperature of each section is controlled by a PLC control system, so that the gauze and the barium wire are coupled, the gauze sheet is folded regularly, and the barium wire is only attached to the gauze sheet and does not detach.

The utility model discloses a multi-stage magnetic separation impurity removal device for vinasse. The multi-stage magnetic separation impurity removal device comprises a feeding system, a multi-stage magnetic separation system and a discharge port, the multi-stage magnetic separation system comprises three sections of magnetic separation devices, the three sections of magnetic separation devices are the same in structure, but the magnetism of magnetic materials on the outer surfaces of magnetic separation rollers included in the three sections of magnetic separation devices is sequentially enhanced; the rotating speed of the driving device is sequentially increased. Any magnetic separation device comprises a magnetic separation roller, a driving device and a discharging device; the magnetic separation roller is hollow and cylindrical, and a horizontally arranged main shaft is arranged in the center of the magnetic separation roller; a magnetic material is arranged on the outer surface and comprises a plurality of strip-shaped magnets, and the south pole and the north pole of each strip-shaped magnet are alternately arranged; the discharging device comprises a scraper device, a brush device, a discharging opening and a discharging groove. The scraper device makes contact with the surface of the magnetic separation roller, the brush device is matched with the scraper device, and the discharging opening is formed in the end, away from the feeding system, of the magnetic separation roller. According to the multi-stage magnetic separation device, the magnetism and the rotating speed are gradually increased, and it is ensured that impurities of different sizes can be removed.

The utility model relates to a core-board and belongs to the technical field of board processing. A core-board comprises a core layer board, a first veneer layer and a second veneer layer, wherein the first veneer layer and the second veneer layer cover the two surfaces of the core layer board respectively. The first veneer layer and the second veneer layer are both bonded with the core layer plate; the core layer plate is formed by transversely splicing a plurality of battens; the batten is formed by longitudinally splicing a plurality of battens; the adjacent battens are connected through first lock catches, and the adjacent battens are connected through second lock catches. The battens are adopted to form the battens, then the battens are spliced to form the core plate, the battens and the battens are of lock catch structures, so that the bending strength in the longitudinal direction and the transverse direction is high, the battens are composed of the battens, the stress accumulation amount is small, and the core plate cannot generate torsional deformation.

The utility model provides a filter bag dust collector structure and an automatic bale breaker, and belongs to the technical field of filtering dust removal, the filter bag dust collector structure comprises a dust collector chamber, a dust removal filter element assembly and a blowback pipe, one end of the dust removal filter element assembly is provided with a connector, and the dust removal filter element assembly is detachably connected to one side of the dust collector chamber through the connector; the back-blowing pipe is connected with the dust remover cavity in a penetrating mode, a middle hole is formed in the middle of the connector, one side of the back-blowing pipe is provided with an extending section extending into the dust removal filter element assembly, a plugging sleeve is detachably connected into the middle hole and arranged outside the back-blowing pipe in a sleeving mode, one end of the plugging sleeve extends into the dust remover cavity, and the other end of the plugging sleeve extends into the dust remover cavity. And the other end of the plugging sleeve extends into the dust removal filter element assembly and covers the outer part of the extension section. According to the filter bag dust remover structure, the dust removal filter element assembly can be cleaned in the installation state, cleaning water cannot enter the dust remover cavity, the dust removal filter element does not need to be independently cleaned off line, and operation is convenient.

The present invention relates to the technical field of three-dimensional parking garages, and specifically to a wire rope traction three-dimensional parking garage lifting system; it solves the technical problems that the chain and sprocket are easily separated during high-speed transmission in the existing super-high-rise three-dimensional parking garage lifting system, and the noise is large during high-speed operation, and the transmission stability is poor. The technical solution of the present invention is: a wire rope traction three-dimensional parking garage lifting system, including a frame, a power transmission system, and two combined wheel trains; the power transmission system includes a reduction motor and a main shaft connected at both ends thereof; the combined wheel train includes a traction wheel, a first support pulley, a second support pulley, a third support pulley, a guide wheel train, a first wire rope, and a second wire rope; one end of the first wire rope is connected to the elevator, and the other end is connected to the counterweight mechanism after passing through the second support pulley, the traction wheel, the first support pulley, and the first guide wheel train; the second wire rope is connected in the same way as the first wire rope.

The utility model discloses a refrigerator door body assembly, which relates to the technical field of household appliances and comprises a refrigerator, the upper part of the refrigerator is fixedly connected with a refrigerating chamber right door, the lower part of the refrigerator is fixedly connected with a freezing chamber right door, and the bottom of the refrigerating chamber right door is fixedly connected with a hinge. The side face of the hinge is movably connected with a door body fixing piece and a refrigerator fixing piece, the inner side of the freezing chamber right door is fixedly connected with a roller shutter device, and the side face of the roller shutter device is movably connected with a roller shutter sliding door. According to the utility model, the door body fixing sheet and the refrigerator fixing sheet are matched together, so that the hinge is fixed in the refrigerator, and the problem that the hinge used by the existing refrigerator door body is easy to fall off or damage when being frequently used is solved; the problem that heat preservation and heat insulation of a refrigerator are affected when an existing refrigerator freezing chamber is frequently used is solved.

The utility model relates to the technical field of power system relay protection, in particular to a locking structure and a transformer neutral point grounding knife switch switching device, which comprise a locking unit, the locking unit comprises an insulating connecting rod, a magnetic connecting plate and a driving electromagnet, one end of the insulating connecting rod is provided with the magnetic connecting plate, and the other end of the insulating connecting rod is provided with the driving electromagnet. A driving electromagnet is arranged on the side, away from the insulating connecting rod, of the magnetic connecting plate, a locking unit connected with a circuit is adopted for protection, when the switch is not grounded, due to the fact that the switch is still in a power-on state, a locking structure can be pushed out, a disconnecting link cannot be closed, and all modules cooperate with one another, so that the safety of the switch is improved. By judging the real-time operation state of the transformer, combining the operation mode of the main transformer and formulating the grounding knife switch switching logic of the transformer neutral point of the whole station, the unsafe factors of manual closing when the transformer and the system have faults are reduced, and meanwhile, the bus zero-sequence locking grounding knife switch switching measure is introduced, so that no matter in manual closing or intelligent closing, the safety of the system is improved. And the safety of operators can be better guaranteed.

The embodiment of the invention discloses an ultrasonic array sensor, an ultrasonic detection device, ultrasonic detection equipment and a blood vessel measurement method, relates to the technical field of ultrasonic detection, and solves the problem that the detection value is inaccurate when the blood vessel diameter and the blood flow velocity are simultaneously detected by the existing ultrasonic technology. The ultrasonic array sensor comprises a packaging structure with a first surface and a plurality of ultrasonic transducer groups arranged in the packaging structure. And each ultrasonic transducer group comprises a plurality of ultrasonic transducers which are positioned on the same plane and are distributed at intervals. The plurality of ultrasonic transducer groups comprise a first ultrasonic transducer group, a second ultrasonic transducer group and a third ultrasonic transducer group which are arranged opposite to the first surface; and the plurality of ultrasonic transducers in the second ultrasonic transducer group are respectively positioned on the midpoints of connecting lines for correspondingly connecting the plurality of ultrasonic transducers in the first ultrasonic transducer group and the plurality of ultrasonic transducers in the third ultrasonic transducer group. And the distance L between the first ultrasonic transducer group and the third ultrasonic transducer group meets the following formula: L = 2d1 * tani + 2d2 * tangamma.

This utility model provides a bending device for a vertical winding machine, belonging to the field of transformer technology. It includes a base, a middle plate, side plates, a length measuring device, and a bending system. The middle plate and side plates are located within the base, with a slewing bearing one and a slewing bearing two connected to their respective ends. Both slewing bearings one and two are connected to the inner wall of the base. A reduction motor one is mounted on the outer wall of the base where the slewing bearing two is located, and the reduction motor one is connected to the slewing bearing two via gears. Two sets of the bending system are provided, with identical structures, symmetrically arranged on both sides of the middle plate. The base's position is adjusted using a distance adjustment device. The length measuring device is located within the base. This utility model adjusts the bending distance according to the bending length, and uses left and right clamping devices to clamp the wire before bending. This bending device has the advantages of high distance measurement accuracy, precise bending angle, and adjustable bending length.

The present invention discloses a four-link shaft linkage structure, comprising a bottom support frame, a U-shaped plate, two upper shaft mechanisms, two lower shaft mechanisms and two connecting rod mechanisms, wherein the two upper shaft mechanisms are respectively arranged on both sides of the U-shaped plate, and the two lower shaft mechanisms are respectively arranged on both sides of the bottom support frame, and the upper shaft mechanisms and the lower shaft mechanisms located on the same side are respectively connected by a connecting rod mechanism, wherein the upper shaft mechanism of the U-shaped plate is an axis-centered movable rotation, and the lower shaft mechanism at the bottom of the connecting rod mechanism is an axis-centered movable rotation, and the connecting rod mechanism can synchronously transmit the rotation of the lower shaft mechanism to the upper shaft mechanism. The U-shaped plate of the present invention can rotate around the upper shaft mechanism, and the display can be rotated and adjusted separately at an angle; the lower shaft mechanism is fixedly connected to the bottom support frame, and is linked to the upper shaft mechanism through a connecting rod mechanism, and when the lower shaft mechanism moves, the upper shaft can be driven to realize synchronous rotation, so that the display and the desktop can maintain a certain angle of rotation.

This application discloses a database object processing method, system, device, and medium, applied in the field of database technology. In the mapping phase, the hierarchical identifiers (after removing hierarchical separators) of the original identifier key are concatenated into a hierarchical identifier string, generating a first digital fingerprint. A mapping identifier key is generated based on the target start character, the target digital fingerprint algorithm identifier, the first digital fingerprint, the target hierarchical identifier length, and the hierarchical identifier string. In the inverse mapping phase, after determining that the mapping identifier key starts with the target start character, the hierarchical identifier string is segmented based on the target hierarchical identifier length to obtain each hierarchical identifier, generating a second digital fingerprint. When the second digital fingerprint matches the first digital fingerprint, the hierarchical separator is used to restore each hierarchical identifier to the original identifier key. By constructing a unified bidirectional mapping mechanism, the database cluster can be compatible with different metadata services, significantly improving system scalability.

This disclosure pertains to the field of optical devices, specifically relating to eyeglasses, comprising: a frame including a track extending in a predetermined direction; a first stimulation module slidably connected to the track for sliding along the track; the first stimulation module having a first defocus stimulation region; and a second stimulation module slidably connected to the track for sliding along the track; the second stimulation module having a second defocus stimulation region. When the first and second stimulation modules are installed in the same side of the frame, a blank area is formed between the first and second defocus stimulation regions. The first and second stimulation regions correspond to the peripheral field of vision of the human eye, and the blank area corresponds to the central field of vision of the human eye. By sliding the first and second stimulation modules on the track, the positions of the first and second defocus stimulation regions in the field of vision of the human eye are changed, thereby changing the position and extent of the blank area. This is intended to inhibit axial elongation and control the degree of myopia.

The invention relates to a medium-frequency power supply connection method for teaching, which comprises a medium-frequency power supply simulation device, the medium-frequency power supply simulation device is electrically connected with an electrical control system demonstration board, the electrical control system demonstration board is electrically connected with a server, and the server comprises a signal simulation module. The signal simulation module is electrically connected with the electrical control system demonstration board, the electrical control system demonstration board comprises a control module, an inverter module, a rectifier module and a sensing module, the rectifier module is electrically connected with the inverter module, and the inverter module is electrically connected with the control module; the idea of real installation, simulation and virtualization is adopted, a comprehensive teaching and training system is constructed by means of informatization, and the functions of electrical control system principle teaching, subsystem simulation operation, whole system operation control, line detection, intelligent fault setting and assessment, teaching display and the like of the intermediate frequency power supply can be achieved.

The utility model belongs to the technical field of adapters, and particularly discloses a high return loss optical contact quick butt joint adapter, which comprises a packaging shell, a ceramic sleeve, a small pan head screw and a guide pin, the packaging shell comprises a first shell and a second shell, the opposite surfaces of the first shell and the second shell are provided with convex columns, the middle of each convex column is provided with a connecting groove, and the ceramic sleeve is arranged in the connecting groove. A mounting groove communicated with the connecting groove is formed in the middle of the first shell and the second shell, and the ceramic sleeve is arranged in the mounting groove; the opposite faces of the first shell and the second shell are provided with screw holes, positioning grooves and guide grooves, the positioning grooves penetrate through the first shell and the second shell, the small pan head screws penetrate through the positioning grooves and are in threaded connection in the screw holes to lock the first shell and the second shell, the guide pins are inserted into the guide grooves, and the neutral packaging shell is adopted so that adapter parts can be more universal. The adapter is butted and locked through the guide pin and the screw, so that the two ends of the adapter are identical in structure and have interchangeability.

The utility model discloses a cable cutting device for power station construction, which relates to the technical field of cable cutting and comprises a cutting base, a cutting adjusting frame, an infrared distance measuring head, a cutting device, a driving motor and a cutting moving device. The inner wall of the guide chute is slidably connected with a movable clamping seat used for clamping and fixing a cable. According to the cable cutting device, the positioning clamping base, the movable clamping base, the driving air cylinder and the infrared distance measuring head are used in cooperation, the cutting length of a cable can be accurately controlled, meanwhile, the cutting length can be set through the controller in advance, manual adjustment is not needed, the cutting efficiency is improved, meanwhile, the cutting precision is guaranteed, and the cutting efficiency is improved. Through cooperative use of the cutting base, the guide sliding groove, the positioning clamping base, the movable clamping base and the infrared distance measuring head, multiple strands of cables can be machined and cut at the same time, and machining and cutting can be conducted at the same time according to different lengths as required.

The present invention provides a drilling tool elevator, which comprises an elevator body, two locking devices with the same structure and at least one driving device. The elevator body is provided with a drill rod hole for the drill rod to pass through and two lifting ear groups respectively located on both sides of the drill rod hole, each lifting ear group comprises a first lifting ear and a second lifting ear symmetrically arranged up and down, a lifting ear groove is formed between the first lifting ear and the second lifting ear, and the lifting ear groove is used to cooperate with a lifting ring; the locking device comprises a first hydraulic cylinder and a first hydraulic rod, the driving device is connected to the locking device, the driving device can drive the first hydraulic rod to move in a direction parallel to the axis of the drill rod hole to lock the lifting ring, when the lifting ring is hung in the lifting ear groove, the driving device drives the locking device to operate, the first hydraulic rod extends and can form a closed circle around the lifting ring with the lifting ear groove to lock the lifting ring, thereby avoiding slippage between the lifting ring and the drilling tool elevator during the lifting process and reducing safety hazards.

The present invention belongs to the technical field of tunnel construction, and specifically relates to a mobile tunnel support cabin capable of supplying oxygen, comprising a support cabin body, a walking crawler and an air and oxygen supply mechanism; the present invention is provided with a compressed oxygen bottle oxygen supply system, an oxygen making medicine box and a chemical oxygen making system inside the support cabin body, so as to fully supply oxygen to the protection cabin body, and an air and oxygen supply mechanism with a selectable inlet for external air is installed on the upper side inside the support cabin body, the air supply and oxygen supply connection are combined for use, after the external air supply channel is blocked, the substances in the external air are first monitored, and when it is monitored that the air is non-toxic, the protection door structure is controlled to open so that the air inlet end of the air intake structure is located in the external environment, and then the air intake structure absorbs the air and inputs the air into a three-stage filter, a pressure regulating valve and a muffler, and then inputs the air into a diffuse oxygen generator for oxygen production, thereby improving the quality of oxygen discharged into the support cabin body, effectively utilizing the external natural air, and reducing the cost of consumables lost in the oxygen production process by other methods.