149results about How to "Quick repair" patented technology

This utility model discloses a tunnel fire-fighting foam liquid filling system, belonging to the field of fire-fighting equipment technology. It includes several fire boxes, a foam liquid filling vehicle, and a monitoring center. Both the fire boxes and the foam liquid filling vehicle are networked with the monitoring center to achieve data exchange. Specifically, each fire box contains a foam liquid storage tank and a first control device. The foam liquid storage tank is equipped with a first liquid level sensor, a solenoid valve, a variable frequency delivery pump, and a first flow meter. A flow regulating valve and a second flow meter are installed on the pressure water pipe. All components are connected to the first control device. The foam liquid filling vehicle contains a foam liquid storage tank, a variable frequency high-pressure pump, a battery, a third flow meter, and a second control device. Both the first and second control devices are connected to the monitoring center. This utility model provides a highly efficient, intelligent, and easy-to-maintain tunnel fire-fighting foam liquid filling system.

The application discloses a kind of electric fork truck with double brake switch brake system and its fault detection method, including brake pedal mechanism, brake switch one, brake switch two, VCU controller, instrument and brake signal lamp, brake switch one obtains the trigger point of brake pedal signal in brake pedal mechanism is set at brake pedal at initial position, brake switch two obtains the trigger point of brake pedal signal in brake pedal mechanism is set at preset position in brake pedal stroke And the signal trigger point position of brake switch one is different.The application is provided with two groups of brake switches, can ensure that when one brake switch is damaged, the vehicle realizes effective braking, ensures safety, and utilizes two brake switch trigger positions, judges the working state of two brake switches according to motor feedback brake deceleration rate signal, so that maintenance personnel can judge fault type and position, and carry out rapid repair.

The utility model discloses a kind of efficient paint mixing and stirring device, comprising: bearing frame, the surface of the bearing frame is fixedly connected with pull ring;Stirring assembly, one side of the stirring assembly is fixedly connected with bearing frame surface side, the stirring assembly is for the sufficient stirring mixing of paint;Vacuum component, one side of the vacuum component is communicated with the surface of stirring assembly, the utility model relates to stirring device technical field.The efficient paint mixing and stirring device, by the setting of vacuum component, by the setting of vacuum pump, the mixed bubble inside load barrel is directly vacuumized, effectively removes internal air, and the paint splashed in the process of vacuumizing is blocked and filtered using filter core, to avoid its random into suction duct, filter core bottom inverted cone, avoid paint adhering on filter core surface, spring can complete its push compact, pull handle rod can be pulled apart, convenient operation.

The utility model provides a novel gap measuring device for measuring the gap between the bearing base and target conductor part belongs to the semiconductor integrated circuit manufacturing technology and industrial measurement field in high -end equipment manufacturing industry is used for placing on the bearing base in the vacuum cavity, including shell (7), circuit board (1), electrode part (2), processing module (3) and power supply circuit (8). Electrode part (2) and processing module (3) are all electrically connected on the circuit board (1), and electrode part (2) is electrically connected with processing module (3) through the circuit board (1), and electrode part (2) forms a capacitor with the target conductor part;At least power supply circuit (8) is arranged on the surface of shell (7), and power supply circuit (8) is at least electrically connected with electrode part (2) and processing module (3) respectively and supplies power to them.

The present application relates to a kind of modular molten salt loading and storage system, including vertical support structure rack, normal temperature electrical equipment group and high temperature molten salt equipment group are physically separated by isolation fence and integrated in it;High temperature molten salt equipment group includes molten salt storage tank and molten salt pipeline connected with molten salt storage tank;Molten salt pipeline includes molten salt loading pipe, molten salt loading pipe has upward inclination relative to horizontal plane, to realize the self-weight backflow of molten salt;The middle section of molten salt loading pipe is connected with molten salt isolation valve, and molten salt isolation valve and normal temperature electrical equipment group are cooperated to realize the on-off control of molten salt loading pipe.The present application effectively avoids the thermal influence of high temperature environment on normal temperature electrical equipment by isolation fence, and the integrated design of overall modularization integrates the core equipment of molten salt loading and storage into one, discards the traditional dispersed equipment arrangement and installation mode, greatly simplifies the field construction process, reduces installation period, also makes the debugging, maintenance and overhaul of system more convenient.

This utility model provides a pet carrier atomizing device, including a base plate, a box body, and a lid. The box body is located on the base plate, and the lid is located on top of the box body. The lid has a liquid inlet with a sealing plug. A mounting cavity is formed between the base plate and the box body. The box body is a container for holding disinfectant or medicine. A power source and an atomizing element are located within the mounting cavity. A water outlet corresponding to the atomizing element is located at the bottom of the box body, a spray nozzle corresponding to the atomizing element is located on the base plate, and an air inlet corresponding to the spray nozzle is located on the box body. The liquid inside the box body comes into contact with the atomizing element through the water outlet. The power source powers the atomizing element, which atomizes the liquid and allows the atomized gas to enter the box body through the spray nozzle and air inlet. This pet carrier atomizing device uses an atomizing element to atomize liquid, allowing the atomized gas to enter the box body for disinfection or pet care, making it widely applicable.

The utility model relates to an entertainment activity device, discloses a panel assembly and poker mahjong machine, wherein the panel assembly comprises a circular panel (401), the circular panel (401) is provided with a card bin assembly (5), a card dealing driving mechanism (9) and a rotation driving assembly used for driving the circular panel (401) to rotate, the card bin assembly (5) comprises a card dealing bin (504), one end of the card dealing bin (504) is provided with a card dealing port (501), and the other end of the card dealing bin (504) is provided with a card dealing driving mechanism (9). The dealing opening (501) is formed in the upper end face of the circular panel (401). According to the mahjong machine control panel, the card bin assembly, the card dealing driving mechanism, the rotary driving assembly and the like are all integrated on the panel, the whole mechanism can be detached from the mahjong machine control panel only by detaching the panel, operation is easy, and overall rapid detachment, installation and maintenance can be achieved.

The utility model provides a kind of energy-saving efficient jacket hot water tank heating assembly, it is related to hot water tank heating assembly technical field, and it includes: main body mechanism and heating mechanism;The heating mechanism includes first heat preservation shell, one end of the first heat preservation shell is fixedly installed hinge, one end of the hinge is fixedly installed second heat preservation shell, and the first heat preservation shell and second heat preservation shell are clamped.Joint in the utility model, installation groove is set up in the outer surface wall of hot water tank body, heating pipe is arranged inside installation groove, then clamping groove is set up inside first heat preservation shell and second heat preservation shell, clamping groove is connected with heating pipe, heating pipe and heat preservation shell are conveniently installed and disassembled, when fault occurs, it is convenient to quickly overhaul, then first heat preservation shell, second heat preservation shell are fixedly connected by connecting bolt and connecting plate threaded connection in the outer surface wall of hot water tank body, and heating pipe is protected and insulated.

The application discloses a trimming device for underwater glider and a use method thereof, and belongs to the technical field of ocean exploration. The trimming device comprises a base, a support shaft, a weighing sensor, a torque sensor and a supporting component. The two end portions of the support shaft with the horizontal axis are installed on the base through the shaft seat. The weighing sensor is installed on the two end portions of the support shaft and is used for detecting the downward pressure of the end portions of the support shaft. The torque sensor is installed on the end portion of the support shaft and is used for detecting the torque of the support shaft. The supporting component is fixedly installed on the support shaft and is provided with a supporting portion which is used for supporting the underwater glider with the axis parallel to the axis of the support shaft. The trimming device realizes high accuracy, high efficiency and multi-dimensional adjustment capacity by means of the introduction of the sensor technology. The trimming device has the characteristics of simple structure, high flexibility and easy maintenance, and thus becomes a practical solution scheme meeting the trimming requirements of the underwater glider.

This utility model discloses a roasting and dehydration device for corn flake production, including a box body. Support blocks are fixedly connected to the inner walls of both sides of the box body. A material trough is placed on the top of the support blocks. Several heat-conducting holes are opened at the bottom of the material trough, and a heating mechanism is installed at the bottom of the material trough. A baffle is placed inside the material trough, and a baffle mesh is installed on the baffle. An air vent is opened at the bottom of the box body, and a blower mechanism is installed inside the air vent. Pressure relief ports are opened on the top side walls of both sides of the box body, and sealing plugs are installed inside the pressure relief ports. A box cover is installed on the top of the box body, and a sealing chamber is fixedly connected to the bottom of the box cover. Several air guide holes are opened at the bottom of the sealing chamber, and air outlet holes are opened on both side walls of the sealing chamber. This utility model eliminates the need for additional drive equipment to rotate the corn flakes to prevent them from piling up when using high-temperature hot air to dehydrate them. It is low-cost, energy-efficient, and the relevant components are detachable for regular maintenance and replacement.

This utility model discloses an easy-to-install duplexer, belonging to the field of duplexer technology, aiming to solve the problem of the extremely difficult disassembly process when the duplexer needs maintenance due to equipment failure in existing technologies. It includes a duplexer body and a mounting plate. The mounting plate is located at the bottom of the duplexer body, and a connecting block protrudes from the bottom of the duplexer body. The connecting block is detachably connected to the mounting plate. An installation hole is opened inside the mounting plate near the side, and a drive rod is slidably installed in the installation hole. A drive block is fixed to the portion of the drive rod located deep within the installation hole, and a first spring is installed on the drive block, which is fixedly connected to the inner wall of the installation hole. A pressing block is fixedly connected to the rod body portion of the drive rod located inside the installation hole. A movable block is provided on the sliding path of the pressing block, and a locking rod is fixedly connected to the other side of the movable block. This easy-to-install duplexer eliminates the need for complex professional tools, reducing the difficulty and threshold of installation.

The utility model relates to automatic assembly technical field discloses automatic correction device of rotor eccentric shaft and needle bearing assembly, including the shell, the left and right sides of shell all are fixedly connected with the air cylinder, two the drive end of air cylinder all is fixedly connected with eccentric clamp hand, the bottom fixed connection of shell has the connecting shell, the inner wall fixed connection of connecting shell has the needle bearing piece, the bottom fixed connection of connecting shell has the tool seat, the bottom fixed connection of tool seat has the steel ball bottom plate, the top of steel ball bottom plate is equipped with a plurality of steel ball, the top rotationally connected of steel ball bottom plate has the dismounting assembly for facilitating dismounting bottom plate. In the utility model, the air cylinder makes two eccentric clamp hands close, and the semicircular groove on the upper half of both sides of clamp hand contacts eccentric shaft, has initial eccentricity, and the side corresponding to eccentricity is subjected to counterforce, makes the other side float, makes it balance, realizes automatic correction of rotor eccentric shaft and needle bearing assembly.

The utility model provides a kind of multi-channel valve, it is related to valve technical field, including four-way valve body, the inside of four-way valve body is equipped with ball sleeve, the inside of ball sleeve is embedded with ball valve, the top of ball sleeve and four-way valve body is respectively provided with first round hole and second round hole, the inside of first round hole and second round hole is embedded with valve stem, the surface of valve stem and located first round hole and second round hole are embedded with first sealing ring, the top of ball valve is provided with recess.This utility model, the multi-channel valve is set by multiple sealing rings, such as first sealing ring, second sealing ring, third sealing ring etc., and sealing ball pad etc. structure, can effectively prevent fluid leakage.At the cooperation of ball sleeve, ball valve and valve body, sealing structure can adapt to the pressure change under different working conditions, ensure that valve always maintains good sealing performance in long-term use process, improve the safety and reliability of fluid delivery.

The present application belongs to the technical field of manifold, and particularly relates to an intelligent throttling well killing manifold, which comprises a base, a plurality of movable support assemblies are slidably connected to the base, the movable support assemblies are fixedly connected with a cross piece, the cross piece is fixedly connected with a plurality of valve body assemblies, adjacent two valve body assemblies are fixed through quick dismounting and mounting assemblies, the quick dismounting and mounting assemblies are fixed on the movable support assemblies, the cross piece and the quick dismounting and mounting assemblies are fixed on different movable support assemblies, the position of the cross piece and the plurality of valve body assemblies can be changed by changing the position of the movable support assemblies on the base, thereby the butt joint installation of the oil well pipeline at different positions can be adapted, the quick dismounting and mounting between adjacent two valve body assemblies can be realized through the quick dismounting and mounting assemblies, the quick maintenance and replacement of the valve body assemblies can be realized, the maintenance efficiency of the throttling well killing manifold is improved, the throttling well killing manifold can be quickly put into use, and thereby the downtime is reduced.

The utility model relates to the technical field of energy storage, in particular to a battery box. The battery box comprises an upper frame assembly, a battery assembly, a lower frame assembly, an electric connection assembly and a temperature control assembly. The upper frame assembly is arranged to be a hollow frame. The lower frame assembly is arranged to be a hollow frame. One end of the battery assembly is connected with the upper frame assembly, and the other end is connected with the lower frame assembly. The electric connection assembly is electrically connected with the battery assembly; the electric connection assembly is connected with the lower frame assembly. And the two temperature control assemblies are respectively communicated with the battery assembly. The temperature control assembly is connected with the lower frame assembly. The electric connection assembly and the two temperature control assemblies are sequentially arranged in the hollow cavity of the lower frame assembly at intervals in the length direction of the lower frame assembly. Therefore, the problem that the electric connection assembly of the battery box is inconvenient to overhaul is solved.

The utility model relates to forest disease and insect pest prevention technical field, and disclose a kind of forest nursery stock disease and insect pest trapping and killing device, including first support frame, first support frame top is provided with moving mechanism and dismounting mechanism, moving mechanism includes support assembly and prevention component, support assembly is located prevention component side face.Set up moving mechanism, through the installation first motor drive first bevel gear, second bevel gear meshing, to drive first reciprocating threaded rod rotation, to drive trapping and killing device device reciprocating up and down, to effectively expand the trapping range, improve the probability of pest contact trapping and killing device;Setting dismounting mechanism, through the installation second U-shaped plate and first support plate bolt installation, to facilitate the overall trapping and killing device dismounting operation, while lamp post is the detachable structure of screw thread installation, convenient for cleaning operation, suitable for adjusting different growth period of nursery stock, to facilitate subsequent rapid repair.

This application relates to the field of escalator technology, and in particular to an escalator step missing detection device, including an escalator body, escalator steps arranged on the inner side of the escalator body, and a fixed inner cavity opened on the inner side of the escalator body. A fixed box is fixedly connected to the inner side of the fixed inner cavity near the side of the escalator step. Through several sets of guide holes, sliding bases and corresponding auxiliary rollers arranged at equal intervals on the outer side of the fixed box, detection can be performed simultaneously at multiple different positions of the escalator steps, with a wide coverage range, effectively avoiding omissions in single-point detection, and improving the comprehensiveness and accuracy of step missing detection. Each set of sliding bases, conductive springs and conductive contacts independently corresponds to a specific step position. When a step is missing, only the conductive spring at the corresponding position contacts and conducts electricity, thereby triggering different states of the alarm light, realizing the precise location of the missing step, facilitating rapid troubleshooting and maintenance.

This invention discloses a maintenance robot, comprising a frame, a climbing device, a central maintenance device, and a side maintenance device. The climbing device is mounted on the frame and used for climbing along the extension direction of the ropes. The central maintenance device is mounted on the frame and used for the maintenance of the object to be inspected. The side maintenance device is mounted on the frame and used for the maintenance of the object to be inspected. This invention utilizes the climbing device to climb along the ropes on both sides of the main cable, enabling the central and side maintenance devices to perform quick and convenient maintenance on the main cable without requiring personnel to work at height.

The utility model provides a kind of tail gas emission device based on semiconductor equipment, including tail gas emission pipeline, first pipeline system, second pipeline system and control module, first pipeline system includes first pipeline and the heat medium control pipeline being connected with first pipeline, and first pipeline is sleeved in tail gas emission pipeline outside;Second pipeline system includes second pipeline and the vacuum control pipeline and cooling medium control pipeline being connected with second pipeline respectively, and second pipeline is sleeved in first pipeline outside;Control module is connected with heat medium control pipeline, cooling medium control pipeline and vacuum control pipeline respectively, to be used for controlling second pipeline and vacuum control pipeline communication or with cooling medium control pipeline communication, to the vacuum extraction of second pipeline or to the cooling medium delivery of second pipeline.The application can effectively prevent the condensation of substances in the tail gas in the tail gas emission pipeline, reducing or avoiding pipe blockage.

This utility model belongs to the field of hydraulic support technology, and in particular to a limiting device for a hydraulic support in mining equipment. It includes a control console and a limiting box plate. An arc-shaped groove is formed on the periphery of the limiting box plate. A U-shaped block is fixedly installed on the inner bottom wall of the control console. A control rod is rotatably connected to the U-shaped block via a rotating shaft. A rectangular groove is formed at the upper end of the control rod, and a connecting rod is inserted into the inner wall of the rectangular groove. A second control rod is fixedly welded to the upper end of the connecting rod. An elastic component connects the rectangular groove and the connecting rod. This utility model changes the original matching locking box design by dividing a control rod into two parts, with the addition of an elastic component and a limiting component. This allows the entire unit to directly apply force to the second control rod to complete the rotation of the control rod, eliminating the cumbersome operation of two parts and improving overall practicality.

The utility model provides an industrial personal computer convenient to disassemble and repair, which belongs to the technical field of industrial personal computers and comprises a base, a bearing plate is fixedly connected in the base, a machine body is arranged on the upper end face of the bearing plate, a limiting mechanism used for limiting the machine body is arranged on the base, and the machine body is rotatably connected with a cover plate through a hinge. A mounting box is fixedly connected to the right end of the upper end face of the cover plate through screws, two pressing blocks are symmetrically and slidably connected into the mounting box, clamping plates are fixedly connected to the lower end faces of the inner ends of the two pressing blocks, and a guide column is slidably connected between the two clamping plates. Through the arrangement of the base, the bearing plate and the limiting mechanism, the industrial personal computer can be rapidly disassembled and assembled, screws do not need to be frequently disassembled and assembled, disassembly and assembly are convenient and rapid, the industrial personal computer can be conveniently and rapidly disassembled and repaired, the disassembly and repair efficiency is improved, and the problem that in the prior art, the screws need to be frequently disassembled and assembled for disassembling and repairing the industrial personal computer, and consequently disassembly and repair are inconvenient is solved.

This invention relates to the field of motor technology and discloses a high-power-density permanent magnet motor for unmanned aerial vehicles (UAVs). The motor includes a stator with a winding section and a frequency conversion section. The winding section is arranged in a ring array around the center of the stator, allowing for different coil combinations on a single winding. The winding section includes slots A, B, and C. Slot A is located on the inner wall of the stator, while slots B and C are located on the stator itself. The inner wall of the stator also has inlet holes A, B, and C. Inlet holes A and B communicate with slot A, and inlet holes B and B communicate with slot B. The motor employs a wide-range speed control to adapt to UAV operating conditions, featuring a six-speed adjustment function. The rated speed ranges from 8 r / min (8 Hz) to 48 r / min (48 Hz), and the speed ratio can reach 1:8 during weak field operation. This allows for precise matching of the power requirements of different stages of UAV operation, such as takeoff, cruise, and high-speed flight, achieving full operating condition coverage without motor replacement.

This utility model discloses a Time Bear Music Alarm Clock with a Night Light, comprising a front cover, a back cover, a middle cover, a PET display panel, a PCBA main board, a button board, a charging board, a light-transmitting decorative cover, a battery, and a speaker assembly. The alarm clock is shaped like a bear. The front cover has a central slot containing a detachable middle cover. The PET display panel is mounted on the front end of the middle cover, and the PCBA main board is threaded onto the rear end. A light-transmitting decorative cover is sandwiched between the middle cover and the front cover. The protective layer, PET display panel, middle cover, and PCBA main board are assembled and pressed together within the light-transmitting decorative cover. The rear end of the back cover has a button opening, a master control switch opening, a sound outlet, and a charging port. An internal storage cavity houses the PCBA button board and PCBA charging board, which are electrically connected to the PCBA main board. The cavity also contains the battery and speaker assembly. This utility model, through innovative design, provides a fun, easy-to-operate, and feature-rich alarm clock product suitable for various home environments.

The utility model belongs to organic wastewater settlement processing technical field discloses a kind of organic wastewater settlement processing device, including inlet pipe, mixing chamber, multistage settlement chamber and sludge collecting tank;Inlet pipe is communicated with mixing chamber, and mixing chamber is communicated with multistage settlement chamber by flow guide pipe, and multistage settlement chamber includes at least three intercommunicating settlement units, and the bottom of each settlement unit is provided with inclined bottom surface, sludge collecting tank is installed in the bottom of multistage settlement chamber, and sludge collecting tank is communicated with multistage settlement chamber, and spiral flow guide plate is installed on the inner wall of mixing chamber, and the pitch of spiral flow guide plate gradually increases from inlet end to outlet end.The utility model can realize wastewater step-by-step depth treatment by using multistage settlement unit with inclined bottom surface, significantly improve settlement efficiency, and sludge is automatically gathered to sludge collecting tank through inclined bottom surface, then combined with guide slope and discharged quickly, which can greatly reduce manual intervention and reduce operation and maintenance cost.

The present application relates to the technical field of new energy comprehensive utilization, in particular to a geothermal photovoltaic hybrid power generation system for water environment, which comprises a floating platform, a support plate arranged above the floating platform, a support frame arranged on the support plate, and a photovoltaic panel installed on the support frame; a maintenance cabin is arranged below the floating platform, a maintenance opening is formed on one side of the maintenance cabin, and an openable maintenance cover is arranged at the maintenance opening; a sealing ring is arranged between the maintenance cover and the maintenance opening; a guide rail is arranged inside the maintenance cabin, a coil pipe frame is arranged in the maintenance cabin and can be pulled and moved along the guide rail, and heat exchange coil pipes are arranged on the coil pipe frame; a second mounting plate is arranged on the other side of the maintenance cabin, a joint pipe is arranged on the second mounting plate, and the joint pipe is communicated with a water supply pipe and a return water pipe; the water supply pipe and the return water pipe are used for being communicated with a geothermal heat exchange loop; and a flushing interface is arranged on the maintenance cabin and communicated with the inside of the maintenance cabin.

The utility model discloses a quick mounting structure of a double-row needle selector. The quick mounting structure comprises a fixed frame, a needle selecting sheet, a first electromagnet group and a second electromagnet group, the number of the needle selecting pieces is even, and the needle selecting pieces are evenly installed on the top of the fixed frame in a double-row mode and swing relative to the fixed frame; each of the first electromagnet group and the second electromagnet group comprises a mounting seat, an electromagnet and a circuit board, the electromagnets are mounted on the mounting seats, and the electromagnets are electrically connected with the circuit boards; the first electromagnet set and the second electromagnet set are installed below the needle selecting piece side by side, an installation base of the first electromagnet set and the fixing frame are integrally formed, and an installation base of the second electromagnet set is detachably installed on the fixing frame. The number of the electromagnets in the first electromagnet set and the number of the electromagnets in the second electromagnet set are the same as the number of the needle selecting pieces, and one electromagnet corresponds to the permanent magnet in one needle selecting piece. According to the fast assembly structure, fast assembly, maintenance and replacement of the electromagnet can be achieved.

The utility model relates to a leakproof mucilage condenser which comprises a tank body, a mucilage inlet tank and a mucilage outlet tank, a plurality of inner pipes are arranged in the tank body side by side, a water inlet and a water outlet are arranged on the tank body, the mucilage inlet tank and the mucilage outlet tank are respectively arranged beside two ends of the tank body, and a first end and a second end of each inner pipe respectively extend out of two ends of the tank body. The first ends of the inner pipes are connected and communicated with the glue inlet tank, the second ends of the inner pipes are connected and communicated with the glue outlet tank, and a glue inlet and a glue outlet are formed in the glue inlet tank and the glue outlet tank respectively. The two ends of the inner pipe are designed to extend out of the tank body, the glue inlet tank and the glue outlet tank are arranged, and the two ends of the inner pipe are connected and communicated with the glue inlet tank and the glue outlet tank respectively, so that the two ends of the inner pipe are exposed out of the tank body, welding is more convenient and more reliable, and leakage is not prone to occurring; therefore, the possibility that water leaks from the outer pipe to the end of the inner pipe is eliminated.

The utility model discloses a double-layer cement foaming stirring device which comprises a cement foaming stirring barrel, the cement foaming stirring barrel comprises an upper barrel, a lower barrel, a first fixing frame and a second fixing frame, the first fixing frame is fixed on the outer side of the lower end of the upper barrel, and the second fixing frame is fixed on the outer side of the upper end of the lower barrel. The first fixing frame is placed on the second fixing frame; the connecting assembly comprises a first mounting hole, an electric push rod, a mounting plate and a groove, the first mounting hole is formed in the middle of the upper end of the second fixing frame, the mounting plate is fixed to the fixed end of the electric push rod, the mounting plate is fixed to the inner side of the second fixing frame and located at the first mounting hole, and the groove is formed in the middle of the movable end of the electric push rod. The utility model solves the problems that when the rotating rod in the lower-layer mixing drum and the valve of the discharge port at the lower end of the upper-layer mixing drum need to be overhauled, the upper-layer mixing drum needs to be detached, time and labor are wasted, and the mixing efficiency is influenced.

The utility model relates to the technical field of manual tools, in particular to a fretsaw assembly with a detachable key ring pull ring, which comprises a fretsaw main body, the key ring pull ring, a detachable connecting part and a packaging structure. The fretsaw body is composed of a high-strength metal wire, the key ring pull ring is matched with a standard key chain, the connecting part achieves rapid disassembly and assembly, and the packaging structure is a transparent plastic bag. Through portable design, durable material selection and multifunctional integration, the problems that a traditional fret saw is inconvenient to carry, prone to damage and single in function are solved. According to the fretsaw assembly, the portability, durability and practicability of the fretsaw assembly can be improved, and the fretsaw assembly is suitable for outdoor activities and emergency rescue scenes.