253results about How to "Avoid breakage" patented technology

The invention relates to the field of marine transformers, and discloses a marine transformer with a protection mechanism, the marine transformer comprises a transformer oil tank and a mounting seat, the transformer oil tank is arranged above the mounting seat, a movable supporting structure is arranged in the middle of the upper surface of the mounting seat, and the transformer oil tank is arranged on the mounting seat through an external protection structure; a mounting frame is fastened in the middle of the lower inner wall of the transformer oil tank, a winding is mounted on the mounting frame, and oil sliding up and down in the transformer oil tank can be blocked through an internal protection structure when the ship body shakes up and down to drive the oil to slide, so that the upper side face and the lower side face of the transformer oil tank are protected; the problem that the upper side face and the lower side face of the transformer oil tank deform due to impact is reduced, the upper side face and the lower side face of the transformer oil tank can be protected outside the transformer oil tank through the external protection structure and the auxiliary protection structure, and the protection effect is better.

The invention belongs to the technical field of conveying equipment, and particularly relates to safety auxiliary coal conveying equipment for coal mine transportation. Comprising a rack, and a crushing assembly and a smoothing assembly are arranged at the upper end of the rack; the crushing assembly comprises a connecting cylinder, a screen, a guide table, a crushing table and the like, the connecting cylinder and the screen shovel up coal briquettes on the conveying belt, large coal briquettes are screened out, the large coal briquettes are conveyed to the crushing table to be crushed through the guide table, and the crushed coal briquettes fall onto the conveying belt; the smoothing assembly comprises smoothing rollers capable of rotating and revolving, and coal briquettes accumulated on the two sides are pushed into the middle of the conveying belt through the smoothing rollers. And the coal briquettes conveyed by the conveying belt are uniform and are not easy to fall off from the conveying belt, so that the safety and the conveying efficiency of the coal briquettes during conveying are improved.

The invention relates to a test method of an organic electrochemical transistor tuning dual-mode flexible band-pass filter. The IPC classification number is G01N3 / 32. According to the organic electrochemical transistor tuning dual-mode flexible band-pass filter, the thickness of a silver metal film is gradually increased from the inner edge to the outer edge of a leading-out end part, connected with a filter functional area, of the organic electrochemical transistor tuning dual-mode flexible band-pass filter, and the thickness is gradually increased to 2-3 times from the thickness of the filter functional area; and an interface stress tolerance area between the silver metal film layer and the polyimide film is gradually transferred to the leading-out end part and presents a gradual change trend. When bending, folding and twisting tests are carried out on the flexible band-pass filter, the problems that the leading-out end part is cracked, fractured, peeled off and the like earlier than the functional area of the filter can be avoided, so that the mechanical property of the flexible band-pass filter can be accurately, objectively and completely tested in the whole test process; and the condition that the leading-out end part is damaged in advance when the mechanical property of the filter is not completely tested is avoided.

The invention discloses a carbon fiber bicycle hub coating-free hot stamping device and a coating-free hot stamping process, and belongs to the field of hub coating-free hot stamping, the carbon fiber bicycle hub coating-free hot stamping device comprises a working table, a mounting plane is arranged on the working table, a feeding table for bearing a carbon fiber bicycle hub is detachably arranged on the working table, and the feeding table is provided with a discharging port for discharging the carbon fiber bicycle hub. A baffle is detachably arranged on the feeding table. According to the coating-free hot stamping device and the coating-free hot stamping process for the carbon fiber bicycle hub, through combination of the follow-up blowing component and the follow-up inserting component, hot stamping operation on the carbon fiber bicycle hub can be effectively and synergistically assisted, so that when the hot stamping component conducts hot stamping on the carbon fiber bicycle hub, the carbon fiber bicycle hub is prevented from being damaged, and the carbon fiber bicycle hub is prevented from being damaged. The situation that the follow-up air blowing component and the follow-up inserting component are used at the same time when the hot stamping component moves downwards is avoided, the stability of hot stamping is improved, the follow-up air blowing component and the follow-up inserting component can be promoted to be used at the same time every time the hot stamping component moves downwards, and the overall maintenance difficulty of equipment is lowered.

The present invention relates to the field of steel wire strength testing, and specifically to a tire steel wire ring strength testing device, the tensile testing machine has two multifunctional clamping jaw devices distributed up and down, the multifunctional clamping jaw device comprises a double-layer bracket body, a driving cylinder, two clamping fingers, a winding assembly and a clamping assembly, the two clamping fingers are axially connected to the opposite sides with a T-shaped clamping wheel, a transmission mechanism is arranged between the output shaft of the driving cylinder and the two clamping fingers, the winding assembly comprises an anti-skid rubber wheel for driving the two T-shaped clamping wheels to rotate synchronously, and the clamping assembly comprises an arc-shaped pressure plate for clinging to the side wall of the T-shaped clamping wheel. The present invention replaces the traditional direct clamping method with a winding method, which greatly avoids the situation that the clamping part is broken due to excessive local stress concentration in the traditional clamping test method, effectively alleviates the defect of steel wire stress concentration in the traditional clamping method, and makes the test result more accurate and reliable.

According to the tension training assembly suitable for the strength training instrument and the strength training instrument, the flexible guide rail is adopted as the flexible movement guide rail of the movable pulley block, and the two ends of the movable pulley block are connected with the suspension wire and the resistance source pull rope correspondingly; a trainee pulls the movable pulley block to slide along a sliding stroke area limited by the flexible guide rail through the suspension wire so as to overcome the resistance of the resistance source pull rope and play a role in strength training. The mode that the movable pulley block is matched with the flexible guide rail perfectly solves the inherent difficulties that a traditional movable pulley metal guide rail is high in price, and left and right guide rails are blocked and unsmooth in the reciprocating motion process, and due to the adoption of the technology that the flexible guide rail is matched with the movable pulley block, the double-end rope outlet function of low-cost single-motor resistance source equipment can be achieved. And compared with the scheme in the market, the equipment cost is greatly reduced, and the use comfort performance is improved. The tension training assembly can be assembled on various rope output strength training instruments, and low-cost electronic strength training equipment is provided.

The utility model provides a portable USB flash disk, and belongs to the technical field of USB flash disks. The portable USB flash disk comprises a lower shell and an upper shell connected with the lower shell in an inserted mode, the same installation groove is formed between the lower shell and the upper shell, a USB flash disk body is installed in the installation groove, a U-shaped groove is formed in the top of the lower shell, heat dissipation holes are formed in the two ends of the U-shaped groove, and the inner wall of the U-shaped groove is communicated with the installation groove. The U-shaped groove is formed in the top of the lower shell, the heat dissipation holes are formed in the two sides of the U-shaped groove, the U-shaped groove is connected with the outside through the heat dissipation holes, the U-shaped groove is communicated with the mounting groove, the mounting groove is further communicated with the outside, heat generated by the USB flash disk body can be conveniently dissipated to the outside, the USB flash disk body can be wrapped by the lower shell and the upper shell, and the U-shaped groove is convenient to use. The purpose of protecting the USB flash disk body can be achieved, and the USB flash disk body is prevented from being damaged due to the influence of external force.

The utility model discloses wood moisture content detection equipment which comprises a detection device body, an anti-skid handle, a screen protective cover, a probe protective cover, a probe sensor, an automatic drilling probe, a detection displayer, a magnetic attraction layer and a power indicator. Two groups of limiting strips are arranged on the two sides of the interior of the screen protective cover, limiting grooves are formed in the left side and the right side of the detection device body, and eight groups of magnetic attraction layers are arranged at the four corners of the left side and the right side of the detection device body. According to the wood moisture content detection equipment disclosed by the utility model, the fragile detection display is conveniently protected and the service life is prolonged through the arranged screen protective cover when the moisture content detection equipment is not used, and the probe is conveniently inserted into wood for detection through the arranged automatic drilling probe; the step that a worker inserts the probe into wood with force can be omitted, and the probe can be prevented from being broken.

A smelting furnace discharging and dumping device belongs to the technical field of smelting furnace discharging and comprises a smelting furnace body, driving assemblies used for driving the smelting furnace body to rotate and dump are arranged on the front side and the rear side of the middle of the outer wall of the smelting furnace body, and each driving assembly comprises two stand columns symmetrically arranged on the front side and the rear side of the outer wall of the smelting furnace body front and back. A shaft body is vertically and rotationally mounted at the top end of the upright post and is fixedly connected with the middle of the outer wall of the smelting furnace main body. The rotary dumping point of the smelting furnace body is arranged in the middle of the smelting furnace body, compared with a traditional mode that a dumping acting point is arranged at the bottom end of the smelting furnace body, the rotary dumping function of the smelting furnace body can be achieved more easily, and the smelting furnace body and the connecting shaft body of the driving device are protected; and compared with a driving mode of driving the bottom end of the smelting furnace main body, the situation that the shaft body is broken in the driving process is avoided, and compared with a driving mode of driving the bottom end of the smelting furnace main body, the tilting angle of the smelting furnace main body is more complete, and materials are completely dumped.

The invention relates to the technical field of optical fiber connectors, in particular to an optical cable fixing and clamping device of an optical fiber movable connector, a contact plate is fixedly mounted in the right end of a connector shell, and an optical cable located in the connector shell is arranged on the contact plate; driving racks located on the front side and the rear side of an optical cable are arranged at the bottom end of the inner side of the connector shell, the sides, close to each other, of the two driving racks are provided with rotation shafts respectively, the two rotation shafts are rotationally installed on the connector shell respectively, and bottom gears meshed with the corresponding driving racks are coaxially and fixedly installed on the two rotation shafts respectively. Top gears located above the corresponding bottom gears are coaxially and fixedly installed on the two rotation shafts respectively, two moving rods are slidably installed at the inner end of the connector shell, and moving racks meshed with the corresponding top gears are fixedly installed on the two moving rods respectively. The device can quickly clamp an optical cable, and ensures the stability, safety and stability of optical fiber transmission.

The invention relates to the technical field of conveyors, in particular to a coal mine scraper conveyor which comprises a rack, a driving part is arranged on one side of the rack, a driving roller and a driven roller are arranged on the rack, the driving roller is arranged at the output end of the driving part, a conveying chain is arranged on the driving roller and the driven roller, and a scraper mechanism is arranged on the conveying chain. The coal conveying device has the beneficial effects that by arranging the scraper mechanism, when there are many coal briquettes on one side of the contact plate, the coal briquettes on the side with many coal briquettes are pushed to the side with few coal briquettes, it is ensured that the coal briquettes are evenly distributed on the side, away from the middle plate, of the contact plate, the conveying chains on the two sides of the connecting plate are made to be identical in stress, and the synchronization degree of the conveying chains on the two sides of the connecting plate is ensured; the situation that the conveying chains are broken due to the fact that meshing between the conveying chains and the driving roller and meshing between the conveying chains and the driven roller are staggered due to deviation of the synchronism of the conveying chains on the two sides of the connecting plate is avoided, and normal operation of the conveyor is guaranteed.

The utility model discloses a heating core assembly for a heat gun, which belongs to the technical field of electric tools and comprises a sleeve, a core frame, a heating element and a ceramic ring, the core frame, the heating element and the ceramic ring are positioned in the sleeve, the heating element is arranged on the core frame, the ceramic ring is positioned at the downstream of the heating element, an air outlet cover is arranged in front of the core frame, and the air outlet cover is arranged in front of the core frame. A ceramic ring is arranged between the core frame and the air outlet cover, the ceramic ring comprises a mounting part and an outer ring located on the periphery of the fixing part, the mounting part and the outer ring are connected through a plurality of connecting ribs, a ventilating duct is formed between every two adjacent connecting ribs, and a breaking seam enabling the outer ring to be broken in the circumferential direction is formed in the outer ring. The outer ring of the ceramic ring is provided with the breaking seam, so that the ceramic ring is broken in the circumferential direction, the situation that the ceramic ring is damaged due to thermal expansion is avoided, and the service life of the ceramic ring is guaranteed.

The utility model provides a soft light air cushion and a lighting system, the lighting system comprises a soft light air cushion and a lamp arranged on the soft light air cushion, and light emitted by the lamp can be subjected to soft light processing through the soft light air cushion. The soft light air cushion comprises a cushion body and a pressure release valve. The pressure release valve comprises a valve body, an adjusting column and a sealing piece. When the air pressure in the inflation cavity of the cushion body exceeds a set threshold value, the adjusting column can move relative to the valve body so that the sealing piece can be separated from the pressure relief opening of the valve body for pressure relief, and therefore the air pressure in the cushion body can be effectively adjusted and controlled through the pressure relief valve, and the situation that the cushion body is damaged due to too large pressure is avoided; the soft light air cushion is ensured to be normally and effectively used, and the lighting system is ensured to provide high-quality light and shadow effects for photography and video recording operation.

The invention discloses a full-automatic PTEE film stretching and sintering machine and a stretching and sintering method, and relates to the technical field of PTEE film stretching and sintering machines, the full-automatic PTEE film stretching and sintering machine comprises a sintering and heating bin, conveying pieces, a film to be stretched, a first assembly, a second assembly and a third assembly, the conveying pieces are symmetrically arranged in an inner cavity of the sintering and heating bin, and the film to be stretched is located in the middle of the conveying pieces; the first assembly and the second assembly are located on the same vertical plane, and through the design of the stabilizing pipe and the pushing piece, solution conveying work can be completed when the first assembly and the second assembly work; the problem that whether the conveying device and the stretching device are not flush or not and consequently the thin film is stressed unevenly can be ingeniously monitored indirectly through movement of the push piece in the stabilizing pipe; the design of one group of parts with multiple functions obviously reduces the complex maintenance work and cost caused by the increase of the parts; the overall operation efficiency of the equipment is improved, and the production continuity is guaranteed.

The utility model provides a device convenient for watermelon seedling raising, which relates to the technical field of watermelon seedling raising and comprises two support frames, the outer bottoms of the two support frames are jointly connected with a collecting box, and a jacking mechanism convenient for taking out watermelon seedlings is arranged in the support frames and corresponds to the lower part of a seedling raising cavity. And a spraying mechanism for extracting water and spraying is arranged on one side of the outer part of the collecting box. The rotary knob is screwed, so that the rotating rod can synchronously drive the first screw rod and the second screw rod to rotate under the meshing characteristic of the driving bevel gear and the driven bevel gear while rotating, and then the lifting plate is controlled to be subjected to lifting adjustment below the storage plate, so that the seedling raising disc is driven to slide along the interior of the seedling raising cavity, and the seedling raising efficiency is improved. The watermelon seedlings are pushed out of the seedling growing cavity, then the watermelon seedlings are conveniently taken out and transplanted, the situation that the seedlings and root hairs of the seedlings are broken in the pulling-out process is effectively prevented, the applicability of the device is improved, and long-term use and popularization are facilitated.

The utility model relates to the technical field of spectacle leg hinges, and discloses a stable elastic spectacle leg hinge, which comprises a spectacle leg, an elastic pile head and a fixing piece which are mutually combined to play a role, a transition groove is positioned in the spectacle leg and extends towards the outer side to open, and the elastic pile head movably extends out of the transition groove when the spectacle leg is folded. The transition grooves can limit the elastic pile heads from the upper side and the lower side, so that the glasses legs are only kept in an opening and closing state, redundant up-and-down movement is avoided, and the overall stability is improved while the elasticity is ensured.

The utility model relates to the technical field of anti-leakage jacking pipes, and discloses a novel anti-leakage jacking pipe which comprises a first jacking pipe and a second jacking pipe, the front end of the first jacking pipe is in a protruding pipe state, the tail end of the second jacking pipe is in a groove shape, the protruding pipe is matched with the groove in shape and size, and the second jacking pipe is in a groove shape. The outer end of the protruding pipe at the front end of the first jacking pipe is inserted into the groove of the second jacking pipe, a sealing ring is connected to the outer side of the connecting position of the first jacking pipe and the second jacking pipe in a sleeved mode, the sealing ring is made of waterproof materials, and a connecting device is further arranged at the outer end of the connecting position of the first jacking pipe and the second jacking pipe. The sealing ring is fixed to the connecting position of the first jacking pipe and the second jacking pipe, a certain sealing effect can be achieved, the first lantern ring and the second lantern ring are used for protecting the internal structure on the outer side, compared with a traditional anti-leakage jacking pipe, the protection effect is better, the influence of damage to the jacking pipe caused by external factors can be avoided, and the service life of the jacking pipe is prolonged. And the service life is longer.

The utility model discloses a kind of paper stacking leveling devices, including workbench, leveling mechanism and rack;The lower portion of the workbench is provided with a rotating component, the rotating component can drive workbench to rotate;Two the leveling mechanism is symmetrically arranged on rack, and the leveling mechanism includes mounting seat, telescopic part and sliding plate, the mounting seat is connected with rack, the telescopic part is set on mounting seat, and telescopic action is carried out along horizontal direction, the output end of the sliding plate is connected with telescopic part, and the telescopic direction of sliding plate and telescopic part is perpendicular, the side of the sliding plate, away from telescopic part, is provided with leveling plate, and the leveling plate is used to contact with paperboard edge when leveling. The device is actuated by telescopic part, utilizes leveling plate to clamp and level both sides of stacked paperboard, simultaneously cooperate with the rotation of workbench, make each layer paperboard edge alignment, to avoid subsequent using packing tape to pack stacked paper, cause paperboard edge to produce deformation or breakage.

The utility model relates to the technical field of cable lead frames, in particular to a cable lead frame with an anti-locking function, which comprises a fixing mechanism, a rotating mechanism is mounted in the fixing mechanism, a connecting mechanism is mounted on the fixing mechanism, the fixing mechanism comprises a support, a travel switch is fixedly connected in the support, and a locking mechanism is mounted on the support. The left side end of the travel switch is movably connected with a disc, the connecting mechanism comprises a connecting frame, the connecting frame is installed on the outer side of the support, the left side end of the connecting frame is fixedly connected with a connecting plate, a connecting screw is installed in the connecting plate, the rotating mechanism comprises a rotating frame, the rotating frame is installed on the connecting screw, and the rotating frame is fixedly connected with the connecting plate. The right side end of the rotating frame is located in the support, and the disc is located in the right side end of the rotating frame. When the cable is clamped and cannot move, lifting of the elevator car can be stopped in time, and the cable is prevented from being snapped.

The utility model discloses a rice polishing machine which comprises a working table and a polishing machine body, two supporting frames are fixedly connected to the upper side of the working table, a vibrating screen mechanism is arranged at the top ends of the two supporting frames, two symmetrical cleaning mechanisms are arranged on the upper side of the working table, and a feeding hopper is connected to the top end of the polishing machine body. The vibrating screen mechanism comprises four mounting seats, the four mounting seats are connected to the two ends of the tops of the two supporting frames through bolts correspondingly, springs are fixedly connected to the upper sides of the four mounting seats correspondingly, and dampers are connected to the inner sides of the four springs correspondingly. Compared with the prior art, the rice polishing machine has the advantages that the rice polishing machine can prevent the screen holes from being blocked and has a cleaning function.

The invention relates to the technical field of glass tube machining, in particular to a borosilicate glass tube forming outer diameter precise regulation and control device and a regulation and control method thereof.The borosilicate glass tube forming outer diameter precise regulation and control device comprises a polishing machine body, a polishing assembly, a gas collection assembly and a heat energy conversion assembly, and a supporting piece is arranged on an output shaft of the polishing machine body; a first grinding piece is arranged on one side of the workbench, a second grinding piece is arranged on the other side of the workbench, the gas collection assembly comprises an exhaust groove and a gas suction groove, and the heat energy conversion assembly comprises a heat transfer piece. According to the device, heat of the borosilicate glass tube can be absorbed through the heat energy conversion assembly, so that the first grinding piece and the second grinding piece grind the borosilicate glass tube after the glass tube is cooled to a certain temperature, and the problems that the wall thickness distribution is uneven and the outer wall is not smooth in the standing and cooling process of the borosilicate glass tube are solved.

The utility model relates to the technical field of heat exchange, and discloses waste water heat energy recovery equipment of an air source heat pump type water heater, which comprises a main body assembly and a recovery machine, an operation table is fixed at the top of the recovery machine, a digital display screen is fixed at the top of the operation table, and a protection assembly is arranged on the digital display screen and comprises a protection piece. The protection piece comprises a protection plate, the protection plate is arranged on one side of the digital display screen, and a movable rod is fixed to one side of the protection plate. The digital display screen has the advantages that the protective cover is arranged on one side of the digital display screen and can protect the digital display screen, dust on the digital display screen can be cleaned when the digital display screen is closed after use, the digital display screen is effectively protected from being collided and scraped by foreign objects, the situation that the screen is broken is avoided, the integrity of the control function is guaranteed, and the control effect is good. And meanwhile, the effect of cleaning dust can be achieved, the good use state of the digital display screen can be maintained, and the risk of faults caused by dust accumulation is reduced.

The utility model relates to the technical field of zipper tooth arranging and assembling, and discloses a zipper tooth arranging and assembling device which comprises a workbench, the top of the workbench is fixedly connected with a zipper tooth arranging machine used for conducting tooth arranging on a zipper belt, the top of the workbench is fixedly connected with a feeding frame, and the top of the workbench is rotationally connected with a tightening roller through a supporting plate. A motor is fixedly connected to the side wall of the supporting plate, the output end of the motor is fixedly connected to a center shaft of the tightening roller, a mounting plate is fixedly connected to the top of the workbench, two guide wheels are rotationally connected to the side wall of the mounting plate, and a tension adjusting mechanism used for adjusting tension of the chain belt is arranged on the side wall of the mounting plate. According to the zipper tooth arrangement assembly device, accurate adjustment of the tension of the zipper belt is achieved through the tension adjusting mechanism, and the problems that in the prior art, a zipper tooth arrangement assembly device cannot adjust the tension of the zipper belt, and the zipper belt is prone to loosening or tensile deformation are solved.

The invention discloses a flexible electronic wire harness preparation process, relates to the technical field of flexible electronic wire harness structures, and aims to solve the problem that an existing flexible electronic wire harness cannot be designed and prepared according to own needs due to the fact that the flexible electronic wire harness is prepared by splicing different finished product materials. According to the technical scheme, the method is characterized by comprising the steps of designing, raw material purchasing, wire harness preparation, blanking, crimping and testing, the flexible wire harness can be well prepared, the wire harness can be well prepared and formed through the steps of wire harness preparation and the like, and the quality of the flexible wire harness is better; through the extruding device, the stranding machine and other devices, the preparation effect of the wire harness can be improved, the wire harness has better performance, and meanwhile the performance of the prepared flexible wire harness is detected. And the effect of preparing the electronic wire harnesses with different requirements according to different requirements is achieved.

The catheterization bag structure comprises a catheterization bag body, a second liquid outlet pipe is fixedly arranged on one side of the lower end of the catheterization bag body, the second liquid outlet pipe is communicated with the catheterization bag body, a connecting pipe is fixedly arranged at the lower end of the second liquid outlet pipe, a liquid drainage cavity is formed in the connecting pipe, and a drainage opening is formed in the lower end of the second liquid outlet pipe. The liquid discharging cavity is of a penetrating type structure, an annular sliding groove is formed in the middle of the interior of the connecting pipe and communicates with the liquid discharging cavity, four fixing rods are arranged in the annular sliding groove, the fixing rods are annularly distributed at equal intervals, the fixing rods are sleeved with a moving seat, and guide grooves are formed in the periphery of the interior of the moving seat; by means of the structure, the problems that after the catheterization bag is full, urine is difficult to discharge automatically, and the anti-backflow effect of the catheterization bag is not good enough are solved.

The utility model relates to the technical field of remote control handsets, in particular to a wireless remote control handset of industrial equipment, which comprises a handset body, a rocker arranged at the top end of the handset body and stepped holes arranged at four corners of the handset body, and position-controllable connecting rods are longitudinally and slidably arranged in the stepped holes. The top end of the connecting rod is connected with a handset top cover used for preventing extrusion, and the part, located between the handset body and the handset top cover, of the connecting rod is sleeved with a spring used for damping. According to the utility model, through the arrangement of the connecting rod with the controllable sliding position, the spring and the handset top cover, the connecting rod can drive the handset top cover to longitudinally slide, so that the handset top cover can be attached to or far away from the handset body, and when the handset top cover is far away from the handset body, the handset top cover can be fixed on the handset body. Through the supporting of the handset top cover and the damping of the spring, the protection effect on the top part of the handset body is realized, and the damage probability of the handset body is reduced.

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are perpendicular to each other, the battery pack comprises a plurality of battery monomers, an electrical isolation plate, a flexible circuit board and a cover plate, the plurality of battery monomers are arranged along the first direction, and the electrical isolation plate is respectively connected with the plurality of battery monomers; the flexible circuit board is arranged on one side, far away from the battery monomers in the second direction, of the electrical isolation plate and is connected with the electrical isolation plate; the flexible circuit board is conductively connected with the plurality of battery monomers, and the cover plate is arranged on one side, far away from the electrical isolation plate, of the flexible circuit board; the cover plate comprises a first body and a first positioning part, the first body is connected with the electrical isolation plate, the first positioning part is arranged on the side, facing the flexible circuit board, of the first body and connected with the first body, and the side, away from the first body, of the first positioning part abuts against the flexible circuit board. According to the invention, the first positioning part is abutted against the flexible circuit board, so that the flexible circuit board is firmly fixed.

The utility model relates to a roller for a rotary floating ladder of an external floating roof tank, which comprises a roller body and anti-explosion wrapping layers, the outer side of the roller body is circumferentially surrounded by a plurality of sections of the anti-explosion wrapping layers, and the anti-explosion wrapping layers are fixed on the outer circumference of the roller body through fasteners I; a fixing lug is arranged at the end of each section of anti-explosion wrapping layer and fixed to the end face of the roller body through a second fastener. The multi-section type anti-explosion wrapping layer can effectively avoid the situation that the anti-explosion wrapping layer is broken due to the fact that the whole anti-explosion wrapping layer bears the weight of the rotating floating ladder and is high in material brittleness, local deformation pressure is relieved, and the fault propagation risk is reduced.

The utility model relates to the technical field of narrow strip coil stock supporting, and discloses a large narrow strip coil stock anti-toppling saddle which comprises a base, a containing groove is formed in the middle of the base in the length direction of the base in a penetrating mode, and inclined supporting slopes are arranged on the two sides of the containing groove from top to bottom. A plurality of anti-roll rods are vertically arranged on each supporting slope surface, and each anti-roll rod can be movably adjusted in the length direction of the base; according to the narrow-strip roll material storage device, narrow-strip roll materials can be supported and limited, stable storage of the narrow-strip roll materials is achieved, the narrow-strip roll materials are prevented from rolling and toppling over when placed, the probability that the narrow-strip roll materials are damaged is reduced, and meanwhile the safety of production work is guaranteed.