108results about How to "Avoid unexpected situations" patented technology

The invention discloses an electrical cabinet with strong anti-electromagnetic interference capability, and relates to the technical field of electrical cabinets, the electrical cabinet comprises a cabinet body and further comprises a protection device, a sealing door slidably penetrates through the right side of the cabinet body, a moving hole is formed in the front side of the sealing door, and a limiting hole is formed in the front side of the sealing door. The protection device comprises an operation hole, an operation rod, a T-shaped rod, a protection rod, an L-shaped plate, a filter, a reset spring and a protection disc, the sealing door moves to enable the limiting hole to be aligned with the T-shaped rod, and after the T-shaped rod is aligned with the limiting hole, the T-shaped rod moves in the direction away from the protection rod under the elastic force effect of the reset spring; the T-shaped rod moves in the direction away from the protection rod to make contact with the inner wall of the limiting hole and restore limiting of the sealing door, the sealing performance of the cabinet body is kept through the L-shaped plate, the influence of external electromagnetic interference can be prevented, the equipment failure rate is reduced, and therefore the usability of the whole system is improved.

The invention discloses an underwater robot intelligent control method and system based on deep learning, and relates to the technical field of underwater obstacle avoidance of underwater robotics.The method comprises the steps that a deep learning calibration model is established through a deep learning algorithm, and the avoidance rate index BrsL in the underwater robot avoidance process is constructed; the ocean current speed and direction of the area where the underwater robot is located and the real-time vertical descending depth, the underwater temperature value and the submerging seawater pressure value of the propeller in the obstacle avoiding process are monitored and monitored, an ocean current influence index YL and a relative strength index Xd are calculated and evaluated, and the ocean current influence index YL and the relative strength index Xd are evaluated; if a multi-stage calibration control strategy of the first calibration instruction and the second calibration instruction is triggered, the power of the propeller and the posture of the underwater robot are adjusted, and timely adjustment is carried out according to the change of the vertical descending depth so as to adapt to the ocean current environment, and it is guaranteed that the underwater robot stably moves in the obstacle avoidance process.

The invention discloses an embedded multi-angle water-rich area slope stability dynamic monitoring device and a use method thereof, and relates to the technical field of slope stability dynamic monitoring, the embedded multi-angle water-rich area slope stability dynamic monitoring device comprises a protective shell, a dynamic detection device is fixedly installed at the bottom of the inner wall of the protective shell, and a button is fixedly installed on the surface of the dynamic detection device. The button is electrically connected with the control end of the dynamic detection device, a hollow pipe fixedly penetrates through the circumferential surface of the protection shell, a detection rod slidably penetrates through the inner wall and the outer wall of the hollow pipe, a first spring is arranged between the detection rod and the hollow pipe, and a signal transmission module is arranged in the dynamic detection device. The detection rod moving accidentally is blocked by arranging the limiting block, the situation that the button is pressed by mistake due to accidental touch in the transportation or embedding process is effectively prevented, and therefore interference on the monitoring result of the dynamic detection device is avoided.

The utility model discloses a novel rail web polisher which comprises a bottom frame, walking wheels, an electric push rod, a polishing mechanism, a feed clamping mechanism, a control box, a left clamping claw assembly and a right clamping claw assembly, the walking wheels used for walking are installed at the bottom of the bottom frame, the walking wheels are erected on a steel rail, the electric push rod is installed on the bottom frame, and the polishing mechanism is installed on the electric push rod. A push rod part of the electric push rod is fixed to a steel rail through a clamp, the push rod of the electric push rod extends out to drive the bottom frame to walk, grinding mechanisms used for grinding rail webs are installed on the two sides of the bottom frame, a feed clamping mechanism used for driving the grinding mechanisms on the two sides to rapidly clamp the rail webs or open the rail webs is installed on the bottom frame, and a follow-up control box is installed on the electric push rod. Left and right clamping claw assemblies for preventing the whole machine from inclining are further installed on the two sides of the bottom frame. By means of the mode, the structure is stable, the clamping and loosening modes are rapid and convenient, the grinding wheel makes elastic contact with the rail web, damage to the steel rail is reduced, and the whole machine is prevented from inclining and accidents are avoided.

The utility model is applicable to the technical field of filter joints, and provides a joint for mounting a filter, which comprises a valve body, the connecting ends are arranged on the two end sides of the valve body; the connecting assemblies are arranged on the outer sides of the two connecting ends; the connecting assembly comprises a connector, and the connecting end is in threaded fit with the connector. The assembling groove is formed in the inner side of the connector, and the fixing ring is arranged in the assembling groove; the sealing washer is arranged on the outer side of the fixing ring; the filtering seat is arranged on the outer side of the fixing ring; the filter screen is arranged on the outer side of the filter seat; the device has the advantages of efficient filtering, convenient maintenance and safe flow control, liquid is filtered twice through a double filtering mechanism, the liquid filtering effect is ensured, meanwhile, the installation and maintenance process is simplified through threaded connection and quick disassembly design, quick replacement or other operation of parts in a connector is achieved, and the working efficiency is improved. Meanwhile, accurate flow control is achieved through the safety locking function, and the safety and flexibility of overall use are improved.

The invention belongs to the technical field of biological detection, and particularly relates to an auxiliary device for bovine tuberculosis kit detection and a use method of the auxiliary device. The problems that existing bovine tuberculosis detection equipment is large in size, inconvenient to carry to the site, complex in operation, low in detection efficiency and high in detection cost are solved. According to the scheme, a plurality of vibration assemblies are arranged on a box body, the vibration assemblies are connected with a supporting assembly, the vibration assemblies are used for driving the supporting assembly to move up and down, a storage box is placed on the supporting assembly, a pore plate is arranged on the storage box, and a sample tube is placed on the pore plate; the auxiliary device for bovine tuberculosis kit detection has the advantages of being small in size, light in weight, easy and convenient to operate, convenient to carry, low in cost and the like so as to meet the requirement for on-site rapid detection, especially in areas with limited resources, the timeliness and accuracy of bovine tuberculosis diagnosis are improved, prevention and control measures can be taken in time, and the detection efficiency is improved. Disease transmission risks are reduced, and healthy development of animal husbandry is guaranteed.

The utility model relates to the technical field of cement grinding mill activation, and discloses a cement grinding mill activation ring baffle device which comprises an installation frame, a buffer rubber ring is fixedly connected to the outer portion of the installation frame, a lining plate is slidably connected to the interior of the installation frame, and an adjusting installation mechanism is arranged in the installation frame. An auxiliary adjusting mechanism is arranged on the front face of the mounting frame, in the using process, a worm rotates and is matched with a worm gear to enable a gear to rotate, the lining plate is conveniently limited, accordingly, mounting operation of workers is facilitated, the labor amount of the workers is reduced, a sliding rod moves and is matched with a spring to enable a clamping block to move, and the working efficiency is improved. Limiting installation and use of different center cones can be conveniently achieved, the use effect is improved, through rotation of a threaded rod, cooperation with a limiting rod, movement of a movable block, adjustment of the position of a contact block and cooperation with a buffer rubber ring, the device can be leveled while different cement grinding mills are installed and used, and accidents in the use process are avoided.

The utility model relates to the technical field of traditional Chinese medicine decoction piece production drying, and discloses a drying device for traditional Chinese medicine decoction piece production, which comprises a drying box and a partition plate, a drying cavity is arranged in the drying box, and a motor box is fixedly arranged on the outer surface of the drying box. The output end of the motor box is electrically connected with an electric rotating shaft through the interior of the drying box, and four placers are fixedly mounted on the outer surface of the electric rotating shaft. According to the drying device for traditional Chinese medicine decoction piece production, traditional Chinese medicine decoction pieces are placed in a storage cavity by a worker, then a protective cover is covered, a motor box is controlled to operate, an electric rotating shaft is driven to rotate, a placer fixedly installed on the outer surface of the electric rotating shaft rotates synchronously, and the traditional Chinese medicine decoction pieces are driven to turn over in the placer; and the traditional Chinese medicine decoction pieces are dried by the dry heat flow through the placer, so that the effects that the traditional Chinese medicine decoction pieces are in contact with hot air for eating, drying is uniform, and meanwhile the drying speed is increased are achieved.

The invention relates to the technical field of undisturbed soil collection, in particular to an undisturbed soil sample collection device and an operation method thereof. The base is fixedly mounted on the top surface of the bottom plate; the guide opening is formed in the side surface of the vertical plate; the guide block is mounted on the inner side wall of the guide opening in a sliding manner; the sampling drill is clamped and mounted on the side surface of the guide block; and the sampling barrel is arranged at the output end of the sampling drill. Compared with the prior art, by arranging the drawing assembly and the arrangement assembly, utilizing a pulley block composed of a movable pulley and a fixed pulley and combining rotation of the winding roller, labor-saving lifting of the sampling barrel is achieved, the labor intensity of workers is relieved, the sampling efficiency is improved, the sampling process is smoother, and meanwhile the sampling efficiency is improved. The reciprocating lead screw rotates to drive the swing block to slide along the guide rod in a reciprocating mode, it is guaranteed that the connecting cable is evenly wound on the winding roller, cable disorder is avoided, convenience is provided for follow-up use, and the service life of equipment is prolonged.

The utility model discloses an unmanned aerial vehicle landing protection device which comprises a supporting frame, a pressure relief mechanism is arranged on the supporting frame, the pressure relief mechanism comprises a transverse rod, an air bag, a bottom sleeve, a pressure relief pipe, a one-way mechanism, a threaded ring, a threaded section, a sealing sleeve and a pressure adjusting mechanism, the transverse rod is installed on the supporting frame, the air bag is connected to the transverse rod in a sleeved mode, and the bottom sleeve is arranged on the bottom sleeve. The one-way mechanism can be opened to allow gas to be discharged through the gas outlet pipe, so that impact force is relieved, the unmanned aerial vehicle is protected against damage, the pressure adjusting mechanism allows an operator to adjust pressure relief pressure according to needs, the compression degree of a spring is changed by rotating a threaded section, and then sealing pressure is adjusted. The design not only improves the safety of the unmanned aerial vehicle during landing, but also enhances the adaptability and flexibility of the equipment.

The invention discloses an overhead transmission line pay-off control method and system based on multi-source parameter perception, and the system comprises a sensing subsystem which collects the load and posture of a pay-off pulley, the posture and geographic positioning of a walking board, and the sag of a pay-off segment observation gear lead, and employs the collected data as the parameter induction quantity of a field pay-off process; the network subsystem is used for integrating the parameter induction quantity acquired by the sensing subsystem through a wireless ad hoc network to obtain a multi-device parameter value and transmitting the multi-device parameter value to the execution subsystem; and the execution subsystem is used for judging the obtained multi-device parameter values, and realizing the automatic unwinding of the overhead transmission line conductor based on multi-source parameter perception through automatic output adjustment of the stretching device.

The invention discloses an intelligent control method and system for cantilever type tunneling. The invention relates to the technical field of the full-section tunneling process. The coding layer receives an input sequence S, calculates forward and backward candidate hidden states through multiple groups of forward and backward GRU (gated loop) units, forms a hidden state sequence H, inputs the hidden state sequence H into the fuzzy processing layer for fuzzy operation processing, and generates a corrected hidden state sequence H'into the decoding layer; according to the method, various tunneling parameters such as total thrust, cutterhead power and torque are comprehensively considered, a rich input sequence is formed through heat coding operation, comprehensive information is provided for the model, and therefore the accuracy of tunneling speed prediction is improved. The bidirectional Seq-Bi-GRU neural network can capture time sequence dependence and long-term memory effect in data, and compared with a traditional BPNN neural network, the method has higher generalization ability and prediction precision when processing complex sequence data.

The invention relates to the field of electric power storage equipment, in particular to an electric power storage device based on grid-load-storage integration, which comprises an electric power switching storage cabinet, the electric power switching storage cabinet comprises a cabinet body, a plurality of second mounting racks are mounted on one side in the cabinet body, and a plurality of first mounting racks are mounted on the other side in the cabinet body. A vacuum cylinder is installed in the middle of the second installation frame, a branching cylinder is arranged in the vacuum cylinder, the bottom of the branching cylinder penetrates through the middle of the bottom end of the vacuum cylinder, a fixing plate is installed on the upper portion of the periphery of the branching cylinder and fixedly connected to the upper middle portion in the vacuum cylinder, and a plurality of second contact pieces are arranged on the inner side of the branching cylinder. Uniformly distributed lower interfaces are formed in the outer side of the bottom of the tapping cylinder, a rotating cylinder is rotationally connected to the upper portion in the tapping cylinder, and a power connection ring is installed on the lower portion in the rotating cylinder, circuit switching can be automatically achieved according to the charging condition of the power storage module, power waste is avoided, and damage to the power storage module due to continuous charging is reduced.

The present invention provides an adjustable obstetrics and gynecology medical device, which belongs to the technical field of obstetrics and gynecology medical auxiliary tools. The adjustable obstetrics and gynecology medical device comprises a support ring, a base is fixed in the support ring, a cushion seat is connected to the top of the base through a rocking mechanism, a 3-5 cm flexible layer is arranged on the surface of the cushion seat, the flexible layer is composed of silicone, the rocking mechanism comprises a plurality of springs, the plurality of springs are respectively fixed between the base and the cushion seat, a limiting mechanism is arranged between the base and the cushion seat, the support ring is connected with the support mechanism, the whole obstetrics and gynecology medical device has a reasonable structure, ingenious design, convenient and safe to use, and can be used to relieve labor pain discomfort for parturients. By using the device, the parturient's pelvis can be relaxed, the pelvic space is further expanded, muscle tension is avoided, and the parturient's attention is distracted, and it is conducive to helping the fetal head to descend and the cervix to expand, and can effectively accelerate the labor process and reduce the labor pain during delivery. It is very suitable for parturients who are giving birth naturally.

The utility model relates to the technical field of municipal construction accessories discloses a protection device for pipeline construction anti -collision, including longitudinal steel pipe, circular arc steel pipe, multidirectional pulley, anti -collision steel strip and oblique steel pipe, the longitudinal steel pipe has many, many longitudinal steel pipes are parallel to the length direction of pipeline, at least two longitudinal steel pipes are opposite other and are located downside, and its bottom is provided with multidirectional pulley, at least one longitudinal steel pipe is opposite other and is located upside, and it connects two longitudinal steel pipes with pulley through oblique steel pipe, two longitudinal steel pipes with pulley are connected through circular arc steel pipe between, the longitudinal steel pipe or oblique steel pipe stretches out anti -collision steel strip outward, the utility model aims at providing more effective, reliable and economic and practical anti -collision solution for pipeline construction.

This invention discloses an easy-to-clean release film dust removal device, belonging to the technical field of release film dust removal equipment. A first adsorption mechanism and a second adsorption mechanism are respectively provided on the support frame. The first and second adsorption mechanisms are each equipped with a cleaning mechanism and a dust removal component, respectively. The cleaning mechanism is connected to the dust removal component. A flattening mechanism is provided on the first plate of the base, and the flattening mechanism is rotatably connected to the support frame. A film winding mechanism is provided on the support frame, and the film winding mechanism is connected to the second adsorption mechanism. This invention simultaneously removes dust from the upper and lower surfaces of the release film through the first and second adsorption mechanisms. Dust on the release film accumulates in the grooves between the rubber belt and the electrostatic adsorption belt. The stirring rod and fixing rod in the cleaning mechanism can knead the gel, which can better clean the dust in the grooves. The brush on the first sliding plate can better clean the dust in the grooves between the rubber belt and the electrostatic adsorption belt during sliding, improving the dust removal efficiency of the release film.

The present invention relates to the technical field of maintenance tools, and proposes a vertical transmission shaft disassembly and assembly device for a large-scale water conservancy pump station, comprising a bracket, a first movable member and a second movable member movably arranged relative to the bracket, a first fixed hole formed between the first movable member and the second movable member, a transmission shaft passing through the first fixed hole, two lifting members, which are respectively lifted and lowered on the first movable member and the second movable member, a second fixed hole formed between the two lifting members, the second fixed hole being used to accommodate the transmission shaft, the lifting members being abutted or cancelled with the connecting flange of the transmission shaft after being lifted and lowered, a first connecting member being slidably arranged on the first movable member, a second connecting member being slidably arranged on the second movable member, and the second connecting member being connected or cancelled with the first connecting member after relative movement. The above technical scheme solves the problem in the prior art that a large transmission shaft vertically arranged to the ground during equipment maintenance affects maintenance operations and is difficult to replace.

The invention relates to tunnel safety facilities, and discloses a multi-layer spiral tunnel sight guidance system combining audio and video, comprising a vehicle detection module, a sound broadcast module, and a control module; the vehicle detection module comprises an infrared sensing unit for monitoring the passing of vehicles and a position information unit for storing the installation coordinates of each infrared sensing unit, the control module comprises a voice unit for storing the broadcast content, the control module matches the infrared sensing unit received with the broadcast content in the voice unit, and sends a broadcast instruction carrying the broadcast content to the sound broadcast module; the sound broadcast module comprises a sound generating unit, the sound generating unit is arranged in the vehicle, and the sound broadcast module controls the sound generating unit to broadcast the number of floors of the spiral tunnel where the vehicle is located in real time according to the received broadcast instruction, so as to solve the technical problem that the driver cannot accurately judge the current floor position when driving in the multi-layer spiral tunnel.

The utility model discloses a new energy power station frequency modulation device, which comprises a protection cabinet and a placement mechanism, the inner wall of the protection cabinet is slidably connected with a sliding block, one side of the sliding block close to the placement mechanism is bolted with the placement mechanism, the top of the placement mechanism is provided with a device body, the inner wall of the protection cabinet is bolted with a monitoring mechanism, and the monitoring mechanism is connected with the protection cabinet. An air inlet frame is connected to the inner wall of the protection cabinet in a bolted mode, a dust filtering assembly is placed at the top of the air inlet frame, an air bellow is placed on the inner wall of the protection cabinet, and a rapid cooling assembly is arranged on the inner wall of the air bellow. The problems that in the prior art, the frequency modulation device is prone to aging and damage, the protection effect is poor, most frequency modulation devices are generally not provided with rapid cooling structures during fixed use, the cooling efficiency of cooling fans of the frequency modulation devices is low, and rapid cooling work is inconvenient are solved.

The utility model discloses spontaneous combustion detection equipment for a battery pack of a new energy automobile. The spontaneous combustion detection equipment comprises a rack, a falling tower and a three-axis moving track mechanism, the automobile chassis enters the rack under the action of external force and is relatively fixed on the rack; the falling tower comprises an impact detection head, and the impact detection head can move along the extension direction of the falling tower and impact the battery pack to be detected; the three-axis moving track mechanism is arranged on the rack, and the falling tower can move along three axial tracks. According to the utility model, the battery pack assembled in the automobile chassis can be directly detected, the detection effect is closer to the real condition, and compared with staged mobile detection, the battery detection of the whole new energy automobile chassis is integrated and continuous, the detection process is more efficient, human intervention can be reduced in the detection process, and the detection efficiency is improved. The detection speed and accuracy are improved; meanwhile, a centralized detection system can ensure that all key parts are comprehensively detected, and the possibility of missing detection is reduced.

The invention relates to a supporting device for an ophthalmologic operation, and belongs to the technical field of auxiliary tools for the ophthalmologic operation. Comprising a supporting frame arranged on the lower side of the treatment chair, and an electric push rod arranged on the supporting frame is connected with a supporting plate rotationally arranged at the end of the treatment chair; the head supporting mechanism is arranged on the supporting plate and comprises a mounting plate, a height adjusting assembly and a head fixing assembly; a second lead screw and a second threaded sleeve are matched with each other to drive a supporting part to support and position the head of a patient, the positioning strength of the supporting part to the head of the patient is adjusted by setting a preset air pressure value in the telescopic adjusting process, and the situation of excessive supporting or not-in-place supporting is avoided; when the second lead screw excessively moves, the sliding block can enter the annular groove from the strip-shaped groove, and the accident situation during clamping can be avoided; the problems that according to a traditional supporting device, it cannot be guaranteed that the comfort of a patient is considered while the head is stably fixed, and potential safety hazards exist in the clamping adjusting range are solved.

The invention relates to the technical field of safety protection devices, and particularly discloses a mine skip bucket lifting system anti-blanking protection device which comprises a shell and a skip bucket body, the skip bucket body is installed in the shell, buffer mechanisms are arranged on the inner walls of the two sides of the shell, a plurality of first steel wire ropes are installed at the top of the shell, and an installation plate is arranged at the top of the shell. And two first moving plates are mounted at the top of the mounting plate, second steel wire ropes are mounted on the outer walls of one sides of the two first moving plates correspondingly, cleaning mechanisms are arranged at the four corners of the mounting plate correspondingly, and protection mechanisms are arranged at the tops of the two first moving plates correspondingly. In the process that ore is transported by the skip bucket body, the stability of the skip bucket body can be ensured through the arranged protection mechanism when an unexpected situation occurs in a lifting system, the limiting and fixing effects on the skip bucket body are achieved, and the unexpected situation that a large amount of ore falls down is avoided; and the safety and the stability of the skip bucket body in use are improved.

The utility model relates to the technical field of civil air defense doors, in particular to a civil air defense door with a door plate convenient to lock. The door comprises a door frame and a locking mechanism, the locking mechanism comprises sliding door plates, the two sliding door plates are arranged on the inner side of the door frame in a front-back staggered sliding mode, movable grooves and connecting inserting grooves are formed in the positions, opposite to the inner side of the door frame, of the outer sides of the sliding door plates correspondingly, and connecting plates are arranged on the inner sides of the movable grooves; a movable rod is connected to the surface of one side of the connecting plate, a rotating shaft is arranged at the joint of the connecting plate and the movable rod, a positioning groove is formed in the end face of the bottom end of the rotating shaft, and the bottom end of the end, close to the connecting inserting groove, of the rotating shaft is in an arc shape. A storage groove is formed in the surface of the bottom end of the inner side of the connecting inserting groove, a locking rod is arranged on the inner side of the storage groove, one end of the locking rod is connected to the inner side of the locking groove in a penetrating mode, and a reset assembly is arranged at the joint of the locking rod and the storage groove.

The utility model relates to the technical field of material clamping devices, in particular to a material clamping device for logistics carrying equipment. The technical problems that most of existing material clamping devices are formed by combining two clamping plates assembled in a one-way mode for use, the shapes of materials possibly have irregularity, the clamping plates which are inconvenient to adjust cannot effectively fix and clamp the materials, and therefore the logistics carrying efficiency is affected are solved. According to the technical scheme, the material clamping device for the logistics carrying equipment comprises a mounting assembly, a telescopic assembly and a fixing assembly, after a vertical plate is moved, U-shaped telescopic plates are moved out along U-shaped telescopic sleeves through driving of a first air cylinder, the U-shaped telescopic plates are attached to the bottoms of materials to shovel the materials, and through cooperation of the two sets of U-shaped telescopic plates, the materials can be conveniently clamped. Materials are moved to the U-shaped telescopic sleeve and the U-shaped telescopic plate, in the carrying process, the materials can be ventilated through the round holes, and the situation that subsequent use of the materials is affected due to moisture accumulation is avoided.

This invention discloses a vehicle loading and maintenance depot suitable for urban rail vehicles, belonging to the field of urban rail transit maintenance technology. Through the corresponding arrangement of maintenance lines with single-sided maintenance platforms, double-sided maintenance platforms, and roof-mounted maintenance auxiliary mechanisms, it can simultaneously achieve vehicle loading and roof-mounted maintenance for urban rail vehicles, ensuring maintenance safety while significantly improving vehicle maintenance efficiency. The vehicle loading and maintenance depot of this invention for urban rail vehicles has a simple layout, high maintenance efficiency and safety. The combined arrangement of external maintenance platforms and double-sided maintenance platforms within the depot fully utilizes the maintenance space, reducing space waste, lowering the maintenance costs of urban rail vehicles, and ensuring the safety of both loading and roof-mounted maintenance. It has good application prospects and promotional value.

The invention belongs to the technical field of child infusion auxiliary equipment, and provides a waist stool for infant infusion, which comprises a lacing belt which is laced and fixed on an adult, a supporting mechanism which is arranged on the outer side of the lacing belt and is used for supporting an infant during infusion, and a lifting mechanism which is arranged above the lacing belt and is used for adjusting the infusion height; by arranging the supporting mechanism, the restraining working effect of the device on an infant is greatly improved, the infant can be better pacified, the waist stool main body, the anti-falling safety belt and the tightening protection belt are arranged in the supporting mechanism, better safety protection can be provided for the infant during tightening, and the safety of the infant is improved. Meanwhile, other activities of adults cannot be affected while the infants are pacified, the height of the hook can be conveniently adjusted through work cooperation of a movable lead screw and an adjuster arranged in the lifting mechanism, and due to the fact that the infants like to move freely, the safety of the infants is improved. And the phenomenon of blood return in the infusion process can be effectively prevented to a certain extent.

The utility model relates to the technical field of reflective material processing, and discloses a reflective film coiling storage device which comprises a bottom plate and supporting legs, extending plates are fixedly connected to the front end and the rear end of the bottom plate, second supporting plates are fixedly connected to the upper surfaces of the extending plates, and connecting blocks are arranged on the faces, close to each other, of the second supporting plates. A second driving motor is fixedly connected to the face, away from the connecting blocks, of the second supporting plate, the second driving motor penetrates through the second supporting plate and is fixedly connected with the connecting blocks, a rotating shaft is arranged between the connecting blocks, clamping structures are arranged in the connecting blocks, and the rotating shaft is connected with the connecting blocks through the clamping structures. The winding roller can be conveniently detached from the surface of the rotating shaft, so that the reflective film can be more conveniently replaced after being wound, the replacement time is shortened, the replacement cost is reduced, firm and reliable connection between the winding roller and the surface of the rotating shaft is ensured, and accidents caused by infirm connection are avoided.

The invention discloses a stud split liquid force end pump head of a magnetic attraction plunger rod, and relates to the technical field of plunger pumps, the device comprises a pump head, one side of the pump head is connected with a pump body, the pump head and the pump body are internally provided with coaxial assembly holes respectively, plunger rod sets are arranged in the assembly holes in a matched mode, and the pump body comprises a main pump body and an auxiliary pump body which are detachably assembled; a coaxial through hole is formed among the main pump body, the auxiliary pump body and the pump head, and a first fastener is arranged in the through hole; at least two through holes are formed; the plunger rod set is provided with a first rod body and a second rod body which are coaxially connected at the ends, and a magnetic structure is arranged at the joint of the first rod body and the second rod body. According to the scheme, the plunger pump can be rapidly disassembled and assembled, the disassembling and assembling precision is ensured, calibration can be conducted in the assembling process, and the assembling efficiency and the assembling effect are improved.

The invention discloses a fixing device for a concrete slab explosion test, which comprises a fixing seat, and the fixing seat comprises a first supporting unit and a second supporting unit which are detachably arranged; first clamping assemblies are arranged at the top ends of the first supporting unit and the second supporting unit; the fixing base is further provided with a monitoring unit and a blasting assembly fixing unit. The free end of the blasting assembly fixing unit can be close to or away from the fixing base, the second clamping unit comprises a first clamping assembly and a second clamping assembly which are detachable, and the second clamping assembly can move in the vertical direction of the first clamping assembly; the device can effectively simulate the real clamping and stress conditions of the two ends of a concrete slab in a building under the action of an explosion load, greatly improves the accuracy of an anti-explosion performance loading test of the concrete slab with the two ends clamped and supported, meets the test of different to-be-tested assemblies at the same time, and improves the test efficiency. The test efficiency is improved and the cost is reduced.

The container with the anti-theft structure comprises a bottle body, a bottle cap and an anti-theft piece, the bottle body comprises a bottle opening end, an abutting block is arranged at the bottle opening end, the interior of the bottle cap is hollow to form a butt joint cavity, a butt joint opening is formed in one end of the bottle cap, a butt joint skirt edge is arranged at the end, corresponding to the butt joint opening, of the bottle cap, and a notch is formed in the butt joint skirt edge. A first side wall and a second side wall opposite to the first side wall are arranged on the two sides, corresponding to the notch, of the bottle cap respectively, one end of the anti-theft piece is connected to the first side wall, and the other end of the anti-theft piece is connected with the second side wall through a connecting bridge. When the bottle body and the bottle cap are correspondingly connected, the end, away from the first side wall, of the anti-theft piece abuts against the abutting block. When the bottle cap rotates relative to the bottle body in the preset direction and the abutting block moves to the first position relative to the notch, the connecting bridge is broken through pressing, the container with the anti-theft structure effectively improves the experience comfort of a user, the usage amount of raw materials is greatly reduced, and therefore cost is effectively reduced.