442 results about "Dual purpose" patented technology

The invention belongs to the technical field of control valve adjustment, and particularly relates to a military and civilian dual-purpose ship electric control valve actuator which comprises a target analysis module, a dynamic compensation module, a parameter transmission module, a closed loop calibration module and an emergency braking module. Valve displacement increments and initial motor rotating speed parameters are distributed for all the sub-windows, the comprehensive influence of gear return difference, thermal deformation, friction and vibration interference on valve displacement is effectively considered in the execution process of the sub-windows, a mechanism coupling compensation factor with a dynamic learning optimization mechanism is generated, displacement errors are combined to be superposed to the rotating speed parameters of the next window, and a dynamic learning optimization mechanism is generated. According to a double-layer correction framework of child window dynamic compensation and tail end closed-loop calibration, technical closed-loop from local interference suppression to global precision guarantee is achieved, an emergency braking module is additionally arranged to avoid the risk of out-of-control displacement caused by sudden load impact, and efficient and safe operation of a ship is effectively guaranteed.

The invention relates to the technical field of hot stamping equipment, and discloses a digital plane and curved surface dual-purpose image-text hot stamping machine system for the surface of a cylindrical product, which comprises a modular structural design, a dual-mode positioning system and a digital control unit, the self-adaptive hot stamping head adopts a flexible stamping module driven by air pressure and hydraulic pressure, and the dual-mode positioning system comprises a plane mode and a curved surface mode. According to the hot stamping machine system, a self-adaptive hot stamping head adopts a pneumatic / hydraulic driven flexible stamping module, a pressure sensor array is arranged in the self-adaptive hot stamping head to adjust local pressure in real time, a dual-mode positioning system is adopted, a vacuum adsorption platform is adopted in a plane mode, a curved-surface mode programmable rotary clamp is adopted, 0-300 rpm stepless speed regulation is supported, a dual-mode hot stamping mechanism is initiated, and the self-adaptive hot stamping head is applied to the hot stamping machine system. The plane / curved surface mode is switched within 10 seconds through the quick-change interface, the hot stamping track is adjusted in real time based on workpiece three-dimensional scanning data, and the waste film recovery rate is increased to 95% or above through the environment-friendly hot stamping film recovery system.

The invention discloses a lifting type underwater water quality measuring device, which belongs to the technical field of water quality monitoring equipment and comprises a floating mechanism, a cleaning mechanism, a winding machine, a lifting frame body, an isolation bin mechanism and a measuring integrated cylinder. The floating mechanism bears the whole floating on the water surface and can be dragged to move along with the ship to achieve rapid transition. The winding machine controls the lifting frame body through the traction rope to drive the measurement integration cylinder to move vertically, and continuous collection of different depth parameters of the water body is achieved. The isolation bin mechanism is a bin body with a downward opening formed by closing two half shells, and a measurement integration cylinder is accommodated in the isolation bin mechanism; a water-gas dual-purpose pump of the cleaning mechanism injects gas into the closed cabin body to empty accumulated water so as to expose the probe, and then sprays water flow to wash attachments on the surface of the probe. The device solves the problems of poor mobility, low profile measurement efficiency and data misalignment caused by probe biological pollution of the existing equipment, and has the capabilities of flexible transition, efficient layered monitoring and reliable in-situ self-cleaning.

The utility model discloses a manual and electric dual-purpose winnowing machine which comprises a fan blade cavity, and the interior of the fan blade cavity is rotationally connected with a first rotating shaft. The motor is fixedly mounted in the fan blade cavity, the winnowing machine is driven by the motor through meshing of the two bevel gears, raw materials which do not need to be excessively refined can be rapidly treated in an electric mode, and the sorting efficiency is improved; a matching structure of a lead screw and a threaded block is fixedly mounted on the outer side of a fan blade cavity, and a gear and a belt are matched, so that the winnowing machine can be manually driven, the rotating speed of a handle can be manually controlled in a manual mode, and the wind power and the rotating speed are more accurately controlled manually; and fine raw materials needing to be specially treated are sorted more finely, so that the manual or electric mode can be flexibly selected according to needs, and the working requirements in different environments are met.

According to the gas-liquid dual-purpose control valve based on shape memory alloy wire driving, the problems of wire overload and sealing failure of a traditional SMA wire driving valve are solved through double-plunger cooperative driving and elastic buffering design, and a first plunger and a second plunger which are coaxially connected in a sleeved mode are arranged in a valve body; the second plunger is driven by a pre-compressed second elastic piece to achieve opening, closing and limiting of a medium input valve port, the first plunger is pulled by an SMA wire, the limit displacement of the first plunger comprises redundant displacement # imgabs0 #, the first elastic piece completely absorbs the residual shrinkage amount of the wire, and it is ensured that the strain of the wire is smaller than a safety threshold value. Through innovative mechanical structure design and material-mechanics collaborative optimization, the problems of overload failure, sealing delay and short service life of an SMA wire driving valve are solved, remarkable breakthrough is made in the aspects of miniaturization, high reliability and long service life, and a brand new technical path is provided for precise fluid control.

The invention belongs to the technical field of automatic feeding, and particularly relates to an automatic feeding system which comprises a storage tank, the tail end of the storage tank fixedly communicates with a discharging pipe, and the top of the storage tank is detachably connected with a cover plate; a barrel is arranged on the lower side of the discharging pipe, the barrel is fixedly provided with the top of a high-precision weighing device, the bottom of the high-precision weighing device is connected with a carrying plate, the barrel is of a double-layer clamping cavity structure, an annular filter plate is embedded in the inner wall of the barrel, a dual-purpose air pump for pumping and filling is fixedly installed on the outer wall of the barrel, and the two ends of the dual-purpose air pump for pumping and filling are fixedly communicated with guide pipes. After accurate weighing is finished, powder materials are continuously diffused, negative pressure is generated in a double-layer clamping cavity of a barrel through an air pump for pumping and filling, so that fine holes in an annular filter plate can generate negative pressure, upward diffusion materials can form traction force, the drifting materials can be adsorbed to the surface of the annular filter plate, and the powder materials are uniformly dispersed. And therefore, the situation that the powder material drifts to other places to cause waste is avoided.

The invention belongs to the technical field of robots, and discloses a ship and bridge dual-purpose cleaning robot and a cleaning control method. The main body structure comprises a resistance reduction-propulsion integrated power system jointly formed by a fairing and a vector nozzle, a grading collaborative cleaning module jointly formed by a cavitation water jet module and a grinding cleaning module, an adsorption system and an auxiliary supporting module, and the auxiliary supporting module comprises a plurality of auxiliary supporting mechanical arms and is used for achieving the purpose of cleaning the water jet in a cleaning mode and an underwater swimming mode. By adjusting the position of a supporting point in real time, the device adapts to structural changes of ribs and bilges of a hull and is used for being matched with an adsorption system and a vector sprayer to form an alternate-cooperative dual-working mode, and different operations of vertical climbing and surface-changing movement are assisted to be completed. The device has multiple purposes, can continuously work on a ship body and a bridge pier, does not need to be modified or replaced by multiple machines, and reduces the comprehensive use cost. And meanwhile, multi-machine cooperation is supported, an efficient cluster cleaning mode is formed, and the operation efficiency and economical efficiency are further improved.

The invention provides a dual-purpose electric speed boat hydrofoil ship with foldable wings, and belongs to the technical field of ship design and new energy power flight control. Comprising a wing ship body, the wing ship body is connected with an intelligent control system, and the intelligent control system comprises sensor fusion and data acquisition, core data processing and decision making, execution mechanism accurate control, operation mode intelligent switching, real-time attitude stable adjustment, accurate cruise control and fault diagnosis and fault-tolerant control. The wing ship body comprises a sliding mode and a hydrofoil mode. The ship can efficiently operate under different water area conditions, has good stability and energy-saving effect, meanwhile reduces seasickness symptoms of passengers, and improves comfort of water travel.

The invention relates to a gantry type multidirectional steel and iron dual-purpose rotary pouring type pouring machine, and relates to the field of pouring machines. A slewing mechanism of the casting machine is mounted on a transverse moving vehicle and supports the rotating action of a casting ladle tilting mechanism; the stream inoculation mechanism is located above the casting ladle tilting mechanism and comprises a fixed mounting frame, a horizontal moving frame, a feeding machine, an inoculation pipe lifting frame and a liftable inoculation pipe. The inoculant hopper is arranged at the top of the feeding machine, and the blanking pipe is in butt joint with a feeding hole of the inoculation pipe, so that communication can be kept even when the inoculation pipe ascends and descends; the horizontal moving frame moves in the radial direction of the casting ladle, it is guaranteed that the discharging opening of the inoculation pipe can synchronously move along with the pouring opening of the casting ladle, the relative positions of the discharging opening and the pouring opening are kept unchanged, and the problems of inaccurate molten iron or molten steel pouring and inoculant distribution deviation are solved. In addition, the equipment allows the casting ladle to rotate horizontally, so that the equipment can serve two casting conveying lines which are arranged face to face, and multi-point and multi-azimuth safe and efficient casting operation is achieved.

The invention relates to a transformer cooling and fire-fighting dual-purpose device, and particularly relates to the technical field of power equipment, the transformer cooling and fire-fighting dual-purpose device comprises a protection box, one side of the inner wall of the protection box is fixedly connected with a transformer body, a heat dissipation auxiliary mechanism is arranged outside the protection box, and a fire-fighting early warning mechanism is arranged inside the protection box; according to the transformer, the heat dissipation auxiliary mechanism is arranged, in the aspect of heat dissipation, the heat dissipation auxiliary mechanism adopts cooperation of a compressed air bag, a gas conveying pipe, a one-way valve, a gas storage box and a gas injection head, heat dissipation fins can be continuously and effectively cleaned, and the efficient heat dissipation performance of the transformer body is kept; the regular purging and cleaning process of the heat dissipation fins ensures that the transformer body can stably dissipate heat even in high-frequency work, the heat dissipation effect is prevented from being affected by dust accumulation, the overall heat dissipation capacity of the transformer body is effectively improved, and the phenomenon that the temperature is too high due to unsmooth heat dissipation is prevented.

The invention discloses a dual-purpose mounting structure of a pole-mounted circuit breaker, relates to the technical field of power equipment, and aims to solve the technical problems that the matching precision of the mounting structure and a circuit breaker body is influenced by temperature fluctuation, and the service life is influenced. Through collaborative design of the two-way shape memory alloy deformation sleeve, the self-adaptive bolt, the spiral section and the waterproof heating structure, efficient dual-purpose adaptation to the cold winter environment and the high-temperature summer environment is achieved, at the high temperature summer, the deformation sleeve is heated to expand to push the positioning ring to be matched with the self-adaptive bolt expansion sleeve to stretch elastically, rigid extrusion of metal parts is avoided, and the service life of the metal parts is prolonged. Meanwhile, the spiral section is driven to secondarily press the rubber layer, the wind resistance and skid resistance are improved, and stable fixation under high-temperature strong wind is guaranteed; in extremely cold winter, the deformation sleeve is subjected to phase change shrinkage to pull the positioning ring, the self-adaptive bolt fills the cold shrinkage gap, the spiral drainage track dredges dew, the metal net is heated to prevent icing, and the pressing force of the spiral joint is matched to avoid the risk of gap expansion and slipping.

The invention relates to the technical field of wafer clamps, in particular to a non-contact wafer clamp suitable for sheet wafers, which comprises a base, a third channel is rotatably connected to the outer wall of the top of the base, a circular mounting plate is fixedly connected to the outer wall of the bottom of a main suction plate, and two limiting protection rods are slidably connected to the inner wall of the circular mounting plate. Four third air ports are formed in the outer wall of the circular mounting plate, a first annular channel is rotationally connected to the outer wall of the circular mounting plate, two first ventilation pipes which are symmetrically distributed are fixedly connected to the outer wall of the first annular channel, and two dual-purpose mechanisms which are distributed in a circumferential array mode are arranged on the outer wall of a first mounting ring. In conclusion, displacement of the floater is hindered through the supporting rod, so that replacement of the gas channel is achieved, the auxiliary suction plate can assist in attachment of the blue film and the wafer, the wafer with the attached blue film can be turned over, and follow-up cutting is facilitated.

The utility model discloses a positive and negative pressure dual-purpose thin safety valve for an IBC tank, which belongs to the field of safety valves and comprises a safety valve body and a bottom ring, the bottom of the safety valve body is fixedly connected with a first disc, the bottom of the first disc is in threaded connection with a second disc through a bolt, and the bottom of the second disc is fixedly connected to the bottom of the bottom ring. The inner side of the bottom ring fixedly communicates with a connecting pipe, the top of the connecting pipe movably abuts against a third block, a sliding groove is formed in the inner side of the third block, two abutting blocks are slidably connected to the inner side of the sliding groove, small springs are fixedly connected to one sides of the two abutting blocks, and the other ends of the two small springs are fixedly connected to the top of the third block. The tops of the two abutting blocks are fixedly connected with spherical blocks. The IBC tank safety valve is reasonable in structural design, the safety valve body can adjust positive pressure and negative pressure of an IBC tank through cooperation of the fixing plug, the bottom ring, the first block, the second block, the third block, the first spring and the second spring, and therefore a user can use the IBC tank safety valve conveniently.

The invention relates to the technical field of mining, in particular to a dual-purpose well control blowout prevention foundation pier for oil and gas wells, which comprises a foundation pier body, supporting bases are fixed at four corners of the bottom surface of the foundation pier body, a connecting plate is fixed on the bottom surface of the foundation pier body, and two hoop plates are mounted below two ends of the connecting plate. Two threaded rods are inserted into the two ends of the two hoop plates, the top ends of the threaded rods penetrate through the connecting plate, the top ends of the threaded rods are in threaded connection with threaded sleeves in a sleeving mode, the bottom ends of the threaded sleeves are fixed to the top face of the connecting plate, and a plurality of clamping blocks are inserted into the surfaces of the threaded sleeves; the device has the beneficial effects that the multiple clamping blocks are inserted into the surface of the screw sleeve, and the pushing rings are arranged to push the clamping blocks to clamp the screw rod. After the screw rod and the screw sleeve are screwed and locked, the push ring is screwed downwards, and the push ring pushes the clamping block to retract into the insertion hole along the inclined surface of the top surface of the clamping block, so that the rubber ring is tightly clamped on the surface of the screw rod by the clamping block, the friction force between the screw rod and the screw sleeve is increased, and the screw rod and the screw sleeve are effectively prevented from being loosened in the using process.

The utility model relates to the technical field of wrenches, in particular to a novel anti-skidding dual-purpose wrench which comprises a wrench body, a first opening and a second opening are formed in the two ends of the wrench body respectively, finger anti-skidding assemblies are arranged at the two ends of a handle of the wrench body, and a holding anti-skidding assembly is arranged in the middle of the handle of the wrench body. The finger sleeve has the beneficial effects that the reserved groove and the first rubber band are combined for use, a more fit and stable holding point is provided for fingers, the hidden danger that the fingers slide off from the reserved groove is effectively reduced through the elastic enclosure effect of the first rubber band, and the operation safety is improved; due to the C-shaped plate-shaped structural design of the silica gel filler strip, the contact area between the hand and the wrench handle is increased, and the friction force and the anti-skid performance are improved; due to the design of the I-shaped plate-shaped structure and the containing groove of the second rubber belt, the second rubber belt can be conveniently extracted, deformed and rebounded to hoop the hand, and the more stable anti-falling effect is achieved.

The dual-purpose spray gun device is characterized in that the dual-purpose spray gun device comprises a base, a handheld spray gun and a gun head assembly, an inner cavity with an opening in the upper end is formed in the base, a detachable large material pot is arranged at the front end of the inner cavity, and when the handheld spray gun is placed in the inner cavity, a small material pot and a spray nozzle assembly on the handheld spray gun are detached, and the gun head assembly is placed in the inner cavity. A kettle cover on the handheld spray gun is matched with a kettle opening of the large material kettle, the gun head assembly is connected with the front end of the handheld spray gun through a hose, a power adapter is fixedly arranged at the rear end of the base, one end of the power adapter is matched with the power end of the handheld spray gun in an inserted mode, and the other end of the power adapter is connected with an external power source. A shifting mechanism for shifting a trigger on the handheld spray gun is arranged on the base; the handheld spray gun has the advantages that the handheld spray gun can be independently used, the handheld spray gun can also be placed in the inner cavity of the base, and the gun head assembly is connected with the front end of the handheld spray gun through the hose, so that the handheld spray gun can be used as a dragging spray gun, and the use is flexible.

The utility model relates to the technical field of advanced manufacturing and automation, and discloses a universal releasing and pulling dual-purpose trigger fuse device, which comprises a fuse body, a connecting lug is arranged on the outer wall of the fuse body, a trip wire structure is arranged at the top of the fuse body, the trip wire structure comprises a trip wire seat, a wire winding shaft is arranged in the trip wire seat, and the wire winding shaft is connected with the connecting lug. And a trip wire is wound on the wire winding shaft. By designing the trip wire structure and screwing the nut in advance, the tightness of the trip wire is adjusted, the upper safety pin has a free pulling space, then the trip wire is fixed on the trip wire pile, the protruding part of the fire pulling rod is inserted into the split fork head at the tail part of the firing pin, the split fork head is opened and clamped in the bundle hole in the fuse body, and the firing pin spring is in a compressed state, so that the trip wire is fixed on the trip wire pile. When the upper safety pin and the lower safety pin are pulled out, the fuse body can rapidly trigger an internal mechanism when a trip wire is pulled, and a mechanical device in the fuse body is activated, so that an explosion reaction is initiated.

The utility model discloses a dual-purpose jig frame for three-dimensional assembly and roll-roll shipping of a jacket of an offshore wind power booster station, the jig frame is composed of four independent jig frames, and each jig frame comprises a supporting leg structure, a cross beam structure and an upper leveling structure; the jig frame not only can be used for three-dimensional assembly of the jacket, but also can be used for roll-roll shipping, solves the problem that the jacket cannot be successfully boarded when large gantry crane equipment is lacked, improves the manufacturing and transportation efficiency, and reduces the construction cost.

The utility model relates to a dual-purpose rapid installation testboard for a horizontal pump and a vertical pump, and belongs to the field of water pump testing equipment. The pipeline rotating device comprises a translation lifting platform, a water collecting tank, a first vertical rack, a second vertical rack, a base, a pipeline horizontal telescopic mechanism, a pipeline vertical telescopic mechanism, a pipeline rotating mechanism and a hollow hydraulic pipe, the first vertical rack and the second vertical rack are fixed to the two sides of the base, the translation lifting platform is installed in the middle of the base, and the water collecting tank is installed on the base. The pipeline horizontal telescopic mechanism is mounted on the pipeline rotating mechanism, and the pipeline vertical telescopic mechanism is connected with the pipeline horizontal telescopic mechanism; the first vertical rack is provided with a pipeline rotating mechanism and a water pump water inlet pipe, and the second vertical rack is provided with a hollow hydraulic cylinder. The device is reasonable and compact in structural design, high in automation degree, high in testing efficiency, capable of reducing the labor intensity of workers and saving the labor cost, high in universality and capable of meeting use requirements.

The utility model discloses a dual -purpose nut gun, including transmission assembly, first conversion subassembly and second conversion subassembly, and transmission assembly includes support cover, slewing screw, sliding cover, slewing screw rotation connection in the rear end of support cover, and the front end of slewing screw is provided with outer thread, and the most front end of slewing screw sets up a plurality of first processing surface along the circumference, forms transmission head, and the rear end of sliding cover is provided with the rear thread hole of adapting with outer thread, and the rear end of rear thread hole sets up a plurality of second processing surface along the circumference, forms the transmission groove of adapting with transmission head, and the front end of sliding cover is provided with front thread hole, first conversion subassembly includes first connecting sleeve and screw piece, and the front end of screw piece can be spun into pull rivet nut, second conversion subassembly includes second connecting sleeve, and the claw of clamping in second connecting sleeve is slidably connected, and the front end of claw can lock pull rod, the utility model puts forward a kind of nut gun, and it can be used for the installation of pull rivet nut and pull rivet.

The invention discloses a variable bias current control method and system for a magnetic suspension bearing under a high-load working condition, and belongs to the field of magnetic suspension bearings, and the method comprises the following steps: S1, multi-dimensional state sensing; s2, constructing a radial rotor stress model based on the real-time operation data of the rotor and the hardware parameters of the magnetic suspension bearing; s3, solving the radial rotor stress model to obtain radial current; s4, superposing the radial dynamic bias current and the radial dynamic control current to obtain a target driving current of the radial electromagnet; and S5, outputting the target driving current to a power amplifier to generate a bearing force. By the adoption of the variable bias current control method and system for the magnetic suspension bearing under the high-load working condition, the dual purposes of low energy consumption, low heating and stable suspension are achieved.

This utility model relates to the field of motor sealing structure technology, specifically a heat dissipation motor sealing structure for a high-pressure explosion-proof fan. It includes an explosion-proof motor body, a matching flange assembly fixed to one end of the motor body, a heat dissipation component external to the flange assembly, an annular groove on the end of the motor body near the flange assembly, a sealing element embedded in the annular groove that abuts against the flange assembly, and multiple sealing rings at the rotatable connection between the end shaft of the explosion-proof motor body and the flange assembly. This utility model effectively dissipates the heat generated by the generator through the heat dissipation component external to the flange assembly, the sealing element embedded in the annular groove abuts against the flange assembly, and the sealing rings at the rotatable connection between the end shaft of the explosion-proof motor body and the flange assembly. The combination of these multiple structures achieves the dual purpose of heat dissipation and sealing.

1. The name of the design product: night vision device (Goshawk). 2. The use of the design product: outdoor military and civilian dual-use light-weight panoramic low-light night vision device with upturning and side folding functions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The utility model discloses a multipurpose staircase for an exhaust header and an EGB bypass assembly, and relates to the technical field of marine diesel engines, in particular to the multipurpose staircase for the exhaust header and the EGB bypass assembly, which comprises a staircase main frame, the staircase main frame is step-shaped, a lower platform is arranged on a step-shaped platform of the staircase main frame, and an upper platform is arranged on the lower platform. The escalator comprises an escalator main frame, an upper platform is installed at the top of the escalator main frame, detachable handrails are installed at the top of the escalator main frame, connecting lugs are fixedly installed on the handrails, and a chain assembly capable of protecting maintainers on the upper platform is installed between the connecting lugs. According to the multi-purpose escalator for the exhaust header and the EGB bypass assembly, the multiple platforms formed on the escalator main frame can be used for entering a scavenging header manhole cover and operating the EGB bypass assembly correspondingly, the dual-purpose effect of one escalator is achieved, then the multi-purpose escalator is more convenient to use, and personnel can be protected under the action of the chain assembly.

The invention discloses a drilling and tapping dual-purpose device for producing doors and windows, the drilling and tapping dual-purpose device comprises a drilling and tapping edge removing mechanism and a positioning and loosening mechanism, the drilling and tapping edge removing mechanism comprises a bottom plate, side edge supporting plates are fixedly connected to the two sides of the top of the bottom plate, and a bearing rotating rod is rotatably connected between the two side edge supporting plates through a bearing piece; the invention relates to the technical field of door and window production. According to the drilling and tapping dual-purpose device for producing the doors and the windows, the drilling and tapping edge removing mechanism and the positioning and loosening mechanism are combined for use, a plurality of strip-shaped concave frames can be used for driving a sectional material body to conduct rotary machining, and in the rotating process, by means of cooperation of the structures, the sectional material body can be conveniently machined; the profile body can be drilled, tapped and deburred in sequence, workers do not need to manually calibrate the position in the whole process, the situation that the profile body is disassembled and equipment is switched for machining of different steps is also not needed, and the workers only need to install the profile body on the front portion.

The invention relates to the technical field of micro electro mechanical systems, and particularly discloses a method for improving the stability of a micro-bridge structure of a micro-bolometer, the micro-bridge structure of the micro-bolometer, the micro-bolometer and a chip. According to the method for improving the stability of the micro-bridge structure of the micro-bolometer, under the condition that the length of a bridge leg is kept unchanged, the height and the width of the bridge leg are synchronously adjusted, so that the ratio of the height to the width of the bridge leg is larger than 1: 3. The thermal conductivity efficiency is reduced by reducing the width of the bridge legs, so that the response rate of the microbolometer is improved; meanwhile, by increasing the height of the bridge legs, the mechanical strength lost due to width reduction is compensated, the dual purposes of high response rate and high mechanical stability of the microbolometer are finally achieved, and the technical bottleneck that an existing microbridge structure cannot give consideration to high response rate and stable mechanical performance at the same time is solved.

The present invention discloses a dual-purpose cab platform structure for a tower crane, an installation method, and a tower crane. The structure comprises a cab platform and an upper support. A first connecting lug is mounted on the bottom of the cab platform, and a second connecting lug is mounted on the upper support. When the first connecting lug is directly connected to the second connecting lug, a flush cab structure is achieved; when the first connecting lug is connected to the second connecting lug via a connecting bracket, a sunken cab structure is achieved. The present invention allows the cab position to be freely adjusted according to different usage environments and requirements, significantly improving efficiency and safety during use.

The utility model provides a dual-purpose magnetic seat for a composite bow, and belongs to the technical field of outdoor sports goods. According to the utility model, the plurality of embedding holes are arranged on the magnetic seat body and outside the through hole, one end of the through hole is provided with the mutually communicated steel ball placing holes, one end of each embedding hole extends to the joint of the steel ball placing hole and the through hole and is provided with the magnet, and the arrow and the steel ball are respectively arranged through the through hole and the steel ball placing hole. The embedding holes are formed in the outer side of the through hole at intervals, so that material supports exist between the adjacent embedding holes and between the embedding holes and the through hole, the installation requirement of the magnet on the tooth holder body is met, and the problem that the through hole is expanded due to the fact that a strong magnetic ring needs to be installed, and consequently the structural strength of the magnetic holder body is reduced can be solved; compared with the prior art, the permanent magnet is longer in service life and higher in use safety, separated arrangement of the magnets is achieved, the magnets can be directly replaced under the condition that part of the magnets are damaged, complete replacement is not needed, and the use cost is lower.