113results about How to "Reduce swing" patented technology

The utility model belongs to the field of parking space locks, and discloses a parking space lock movement with an emergency structure and a parking space lock. A parking space lock movement with an emergency structure comprises a driving mechanism; a rotating member; and a transmission mechanism. The parking space lock comprises the parking space lock movement with the emergency structure and further comprises a connecting arm, a connecting shaft, a blocking piece, a main shaft and a connecting base. According to the parking space lock machine core with the emergency structure, when the driving unit stops, the rotating piece is rotated to drive the transmission piece to rotate together, so that emergency operation can be achieved through the rotating piece, no clutch step exists between the rotating piece and the transmission piece, and operation is convenient and fast; according to the parking space lock, the main shaft and the connecting shaft are arranged in parallel at an interval, the moving piece is matched with the connecting arm to drive the blocking piece to turn over in a moving mode, therefore, the driving unit outputs small torque to drive the blocking piece to turn over, the swing amplitude of the connecting arm is small, and flat design of the parking space lock is facilitated.

The utility model discloses a flexible photovoltaic support in the technical field of solar photovoltaic, which comprises at least two groups of photovoltaic supports which are longitudinally arranged, connecting pieces are arranged in the longitudinal direction, a plurality of groups of photovoltaic supports are connected through the connecting pieces, each group of photovoltaic supports at least comprises two bases, two inhaul cables and a photovoltaic assembly, the bases are transversely arranged, and the photovoltaic assemblies are arranged on the bases. The lower ends of the bases are fixed on the ground, the bases are connected through the inhaul cables, the photovoltaic modules are fixed on the inhaul cables, the connecting pieces comprise span stabilizing pieces and connecting ropes, the span stabilizing pieces are connected between the inhaul cables arranged on each group of photovoltaic supports side by side, and the connecting ropes are used for connecting the span stabilizing pieces on two adjacent groups of photovoltaic supports. According to the flexible photovoltaic support, the technical problems that a certain safety risk exists and the labor intensity and the installation difficulty are increased due to the fact that an installation instrument needs to be manually lifted on a mountainous region to pre-tighten a steel rope in an existing device are solved, and the installation difficulty and the labor intensity are reduced, and the installation cost is reduced.

The application discloses a self-balancing offshore operation platform safety ladder and a use method thereof, which comprises a sliding seat arranged in a horizontal sliding mode, a connecting frame hinged to one end of the sliding seat, a footboard horizontally and rotationally connected to the connecting frame, and a counterweight hung at the bottom of the footboard, wherein a hoisting frame is installed at the top of the sliding seat, the top end of the hoisting frame is connected with the movable end of the connecting frame through a lifting rope, and a horizontal shaking buffer assembly is arranged between the connecting frame and the footboard. The self-balancing mechanism and the buffer assembly significantly improve the stability of the safety ladder under complex sea conditions, the real-time response and anti-skid design ensure the safety of personnel getting on and off the platform, and the quick installation and modular design facilitate daily use and maintenance.

The utility model discloses a highly flame-retardant oil tanker power cable, which comprises a cable body, the cable body comprises conductors, an insulating layer, a filling layer, a weaving layer, an armor layer and an outer protective layer, the filling layer is filled between the insulating layer and the weaving layer, the highly flame-retardant oil tanker power cable further comprises a supporting plate, a transverse plate and a vertical plate, the transverse plate is fixedly connected to one side of the outer wall of the supporting plate, and the vertical plate is fixedly connected to one side of the outer wall of the supporting plate. The vertical plate is installed on one side of the top of the supporting plate, a clamping base is arranged on one side of the transverse plate, an anti-slip strip is arranged at one end of the clamping base, and the adjusting assembly comprises an adjusting rod, a spring, a clamping block and an anti-slip pad. Through cooperation of the filling layer, the transverse plate, the vertical plate, the fireproof partition plate and the adjusting assembly, flame spreading can be effectively slowed down or stopped, the risk of fire disasters is reduced, the safety and reliability of the cable are improved, the cable is flexibly installed at a designated position according to needs through the adjusting assembly, swing and vibration of the cable in the operation process are reduced, and the service life of the cable is prolonged. Problems of short circuit, sparks and the like caused by cable loosening are avoided, and the risk of cable faults is reduced.

The present application relates to a kind of rotary compressor, gas compression system, refrigeration system and heat pump system, rotary compressor includes cylinder, piston, crankshaft, swing block and sliding vane, the compression chamber and swing groove are arranged inside cylinder, piston is arranged in the compression chamber, swing block is rotationally arranged in swing groove, sliding slot is arranged on swing block, sliding vane is slidably arranged in sliding slot, and one end of sliding vane and the side wall of piston abut, the other end between the inner side wall of the cylinder is provided with the driving assembly for driving the one end of the sliding vane and the side wall of the piston abut, crankshaft is linked with piston, and drives piston to eccentric rotation in the compression chamber, swing block is synchronously swung back and forth in swing groove. By the sliding vane and the rocker block of prior art are designed as a whole, the swing amplitude of sliding vane and swing block can be greatly reduced, the friction power consumption is effectively reduced, and the cold leakage between sliding vane and piston can be reduced, the lubrication state between swing block and cylinder is improved, and the friction loss between sliding vane and cylinder is reduced.

The invention discloses a spray amplitude rapid adjustment device for a spray gun, comprising a gun body, an adjustment hole, a main airflow channel, a secondary airflow channel and an air inlet channel are arranged on the gun body, the air inlet channel, the main airflow channel and the secondary airflow channel are all connected with the adjustment hole, the main airflow channel and the adjustment hole are connected to form an air outlet 1, the secondary airflow channel and the adjustment hole are connected to form an air outlet 2, the air inlet is formed at the connection between the air inlet channel and the adjustment hole, a rotatable adjustment valve stem is installed in the adjustment hole, an air guide groove is provided on the adjustment valve stem between the air inlet and the air outlet 1 or the adjustment hole, the air guide groove connects the air inlet and the air outlet 1, a control hole is also arranged on the outer surface of the adjustment valve stem, an air guide channel connecting the control hole and the air guide groove is arranged in the adjustment valve stem, and when the adjustment valve stem rotates, the control hole and the air outlet 2 can gradually change from a non-overlapping state to a completely overlapping state. The spray gun with the spray amplitude adjustment device has a simple structure, is easy to adjust and process, and has good sealing performance.

The utility model discloses an adjustable surveying and mapping instrument windproof support belongs to surveying and mapping instrument support field, and it includes adjustable support, support sleeve and reinforcing link: adjustable support contains main rod, the inner rod of the upper and lower slide of main rod, and the thread locking mechanism of locking inner rod height, and the inner rod upper portion fixed surveying and mapping instrument body, support sleeve upper end connects main rod, and the outer surface ring of lower extreme is clothed three collapsible legs, and the inside slide slide bar, and the telescopic link of slide bar inside slide is arranged, and the support block is fixed to telescopic link bottom end, reinforcing link is set up to corresponding leg, and two ends are rotatable connection collapsible leg and slide bar respectively, and the leg is set up to corresponding and has the accommodation groove. When the leg is folded, reinforcing link is received into the accommodation groove, when the leg is opened, reinforcing link and slide bar, leg constitute the triangle stable structure. The utility model can effectively promote the whole wind bearing capacity, keep stable observation, reduce the measurement error caused by vibration.

The utility model discloses an intelligent electromagnetic chuck crane which comprises two end beams, two main beams arranged between the end beams, a hoisting trolley arranged on the main beams, a winding drum mechanism arranged on the hoisting trolley, a lifting appliance arranged below the hoisting trolley, a movable pulley arranged at the top of the mounting rack, a movable pulley arranged at the bottom of the mounting rack, and a movable pulley arranged at the top of the movable pulley, the movable pulley is connected with the winding drum mechanism through a steel wire rope, a plurality of connecting frames are evenly arranged at the bottom of the mounting frame, electromagnetic chucks are arranged below the connecting frames, vertically-formed sliding holes are formed in the connecting frames, contact switches are arranged at the tops of the sliding holes, and each electromagnetic chuck comprises a mounting plate; a sliding plate is arranged at the top of the mounting plate, and the sliding plate is slidably connected into the sliding hole; the crane can ensure the precision when the electromagnetic chuck is matched with an object, and the stability and safety of hoisting work are improved.

The utility model relates to the technical field of hoist, concretely relates to a low-position rotary type hoist trolley, including operation trolley, the below of operation trolley is equipped with rotary trolley frame, is installed between rotary trolley frame and operation trolley and has rotary mechanism, the bottom of rotary trolley frame is installed with lower trolley general assembly, and lower trolley general assembly includes the load platform of fixed connection in the lower part of rotary trolley frame, is installed with hoisting mechanism on load platform, and hoisting mechanism is connected with container spreader through steel wire rope, one side fixed connection of load platform bottom is equipped with the connecting frame of L type, and the bottom surface fixed connection of connecting frame horizontal section has driver's room. The utility model sets up the driver's room at the bottom of rotary trolley frame, and realizes the synchronous rotation of driver's room and container spreader through rotary mechanism, and the driver's vision is consistent with container direction all the time when hoisting, to improve the intuitiveness and precision of alignment operation.

The utility model relates to an ocean floating type hose with high buoyancy, each section of hose comprises a main pipe body, an auxiliary pipe body, a flange I, a flange II and a stagnant oil interface defined by the main pipe body, the auxiliary pipe body, the flange I and the flange II, and the main pipe body comprises a lining layer I, a cord fabric reinforcing layer I and a rubber coating layer I; the auxiliary pipe body comprises a lining layer II wrapping the outer side of the main pipe body, a cord fabric reinforcing layer II and a rubber wrapping layer II internally provided with a floating layer and a self-expansion leakage early warning layer. The floating layer comprises a floating air bag arranged in the axial direction of the hose, an air conveying pipeline communicated with the floating air bag is arranged on the auxiliary pipe body, and the other end of the air conveying pipeline is communicated with an air valve of an external air pressure source. According to the ocean floating type hose with the high buoyancy, the floating air bag is arranged in the hose, the total buoyancy of the hose can be remarkably increased, it is ensured that the hose is kept in a floating state in water, it is crucial to liquid conveying, and damage or operation interruption caused by hose sinking can be prevented.

The invention discloses an environment monitoring device based on artificial intelligence, and relates to the technical field of environment monitoring. The device comprises a device body, the top of the device body is provided with a driving assembly, the center of the top of the device body is provided with a Bluetooth assembly, the Bluetooth assembly is interconnected with a mobile phone through an intelligent APP, the device further comprises an anti-jamming device, the anti-jamming device is arranged above the device body, and the anti-jamming device comprises an electric telescopic column, a monitoring assembly and a sensing assembly. The bottom of the electric telescopic column is fixedly installed on the top edge of the device body, the bottom of the monitoring assembly is fixedly installed on the top of the telescopic end of the electric telescopic column, the monitoring assembly communicates with the Bluetooth assembly, and the back of the sensing assembly is fixedly installed on the front of the monitoring assembly. According to the invention, the monitoring assembly realizes monitoring height adjustment, which is different from inconvenience caused by manual adjustment of a transmission thread monitoring device by a worker, so that real-time monitoring is realized through automatic adjustment, and hands of the worker are prevented from being worn and injured.

This application discloses a method and system for planning the hoisting trajectory of a UAV based on industrial vision, relating to the field of UAV technology. The planning method includes the following steps: S1: Real-time acquisition of image data of the hoisting scene using industrial vision equipment; S2: Identification of obstacles, target placement area, and the position and shape information of the hoisted object from the preprocessed image; S3: Establishment of a dynamic model of the UAV-hoisted object system based on the information acquired by industrial vision; S4: Construction of a multi-constraint trajectory optimization objective function based on the dynamic model of the UAV-hoisted object system; S5: Generation of an initial hoisting trajectory; S6: Output of the final UAV hoisting trajectory. This method and system for planning the hoisting trajectory of a UAV based on industrial vision uses industrial vision equipment to acquire environmental information in real time, enabling timely perception of changes in the position of obstacles and targets in the dynamic environment, thus improving the adaptability of trajectory planning to the dynamic environment.

The present disclosure provides a method for improving the process stability of a glass melting furnace and a glass production method. The method for improving the process stability of a glass melting furnace comprises the following steps: raising the liquid level in the furnace; withdrawing the feeder; blocking the feed port of the furnace and cleaning the material pile at the feed port; reinstalling the feeder; and restoring the production process before cleaning. The liquid level in the furnace is raised in advance to ensure that the liquid level in the furnace fluctuates less after the feed port is cleaned, so as to avoid affecting the yield of the product; and then the feed port is blocked to reduce the viscosity of the material pile through the higher temperature of the furnace, so that it can flow as quickly and easily as possible, improve the volume of the material pile, reduce the swing of the tail of the material mountain, improve the stability of the temperature at the bottom of the pool, and greatly improve the cleaning efficiency and cleaning effect, thereby obtaining a better clarification and defoaming effect and achieving a higher yield level.

The application discloses a windproof device and method for improving the safety of a unit curtain wall, which comprises a base, an adsorption assembly, a winch, a cable, a counterweight assembly, a buffer tire assembly and a handrail. The adsorption assembly adsorbs and fixes the base to the surface of the unit curtain wall, the winch tightens the cable, so that the unit curtain wall is in tension constraint with the hook, the temporary anchor point or the adsorption fulcrum, thereby inhibiting the rotation and swing in the hoisting process; the counterweight assembly lowers the gravity center, the buffer tire assembly absorbs the in-place impact, and the handrail facilitates manual fine adjustment and positioning. The application can reduce the traditional cable wind rope layout, and improve the hoisting safety and efficiency of the unit curtain wall.

The invention provides a self-moving rubber belt conveyor extension auxiliary device, which comprises a traction part arranged on an electrical platform of a self-moving rubber belt conveyor and comprising a hoisting steel wire rope; the lower end of the supporting part is fixed to a machine tail longitudinal beam of the self-moving type rubber belt conveyor, and the supporting part is obliquely arranged relative to the vertical direction; and the hoisting part is arranged in a liftable mode, the hoisting steel wire rope crosses over the supporting part and is connected with the hoisting part, the hoisting steel wire rope drives the hoisting part to ascend and descend, and the hoisting part is used for hoisting loose rubber belts of the rubber belt conveyor. Through the combined action of the traction part, the hoisting part and the supporting part, a loose rubber belt of the self-moving type rubber belt conveyor can be easily hoisted, a worker arranges the supporting assembly on the ground, the worker does not need to worry about touching the rubber belt conveyor or the loose rubber belt, and safety accidents are avoided. By using the device, the process of laying the supporting assembly can be simplified, manual operation is reduced, the labor intensity is reduced, and the efficiency of extending the belt conveyor to the deep part of the driving working face is improved.

The utility model relates to a kind of multi-airbag coordinated trim's offshore semi-submersible vessel, belong to offshore semi-submersible vessel technical field, including semi-submersible vessel ontology, the front and rear sides of the left side of the upper surface of semi-submersible vessel ontology are all fixed with several first airbags by large cylinder bracket, one side of semi-submersible vessel ontology is equipped with anti-drop mechanism, and the anti-drop mechanism includes the fixed frame of being fixed in one side of semi-submersible vessel ontology and the number of two. The multi-airbag coordinated trim's offshore semi-submersible vessel, the stability when the ship dives can be increased by the buoyancy of several first airbags of front and rear sides, reduce swing and vibration, two second airbags are fixed in the two sides of semi-submersible vessel ontology, further enhance the lateral stability of ship, ensure that ship keeps balance in diving process, by the cooperation of fixed plate and protection frame, the outside protection performance of several first airbags of front and rear sides is promoted, reduce the impact of airbag in diving process by external object.

The utility model discloses a kind of glasses and hinge structure thereof, hinge structure includes: fixed pedestal, fixed on frame, fixed pedestal is equipped with through-hole;Screw and nut, pass and be equipped in through-hole, for providing mechanical connection;Damping member, by screw and nut is fixed on fixed pedestal, the outer wall of damping member is rounded rectangular column;Elastic sheet, main body is located in temple, one end is exposed and bent as rounded rectangular sleeve, the sleeve structure is set on the outer surface of damping member, realize the rotary connection of temple;Spring wave pearl, embedded in the recess of fixed pedestal, and the wave pearl top is tightly attached to the outer surface of the sleeve structure of elastic sheet;Wherein, when temple rotates, the rounded rectangular outer wall of damping member provides two contact points, spring wave pearl provides third contact point, three jointly compress sleeve structure, make its elastic deformation and energy storage rebound.The utility model can improve temple stability and reduce swing, enhance rebound mechanism, simplify structure and improve durability.

The utility model discloses a kind of blown film machines for film production, it is related to blown film machine technical field, including blown film mechanism, flattening mechanism, winding mechanism and cooling mechanism;Blown film mechanism includes material cylinder, and material cylinder is provided with hopper and die head;Flattening mechanism includes frame, and frame is provided with herringbone and the flattening roller group located in herringbone upper end;Winding mechanism includes machine table, and machine table is provided with winding roller group;Cooling mechanism includes air supply source and the cooling air ring being set in die head upper end, air supply source is connected with cooling air ring by pipeline, and the inner ring wall of cooling air ring is provided with multiple air outlets, and each air outlet central axis is inclined to be set relative to horizontal plane to oblique upper side;Air outlet central axis is inclined to be set relative to horizontal plane to oblique upper side, so that cooling airflow and bubble contact form angle, airflow continues to flow upwards after contacting bubble, improve the time and area of airflow and bubble contact, enhance the cooling effect to bubble.

The utility model relates to a wheel set structure for a luggage. The wheel set structure comprises at least one universal wheel assembly used for supporting a luggage body to move. Each universal wheel assembly comprises a rolling wheel and a universal joint with one end connected with the rolling wheel. An integrally formed bearing part is arranged at the other end of the universal joint, and the bearing part is connected with the box body; the bearing piece comprises an edge covering structure connected with the corner edges of the bottom of the box body and a step type installation piece used for being fixedly connected with the box body. By arranging the step type mounting piece, connection between the box body and the rolling wheels can be increased, connection between the box body and the rolling wheels is more stable and firmer, movement of the box body is reduced, meanwhile, the high edge design is arranged, the contact area between the box body and the high edge design can be increased, swinging of the box body is reduced, damage to the box body is reduced, and therefore deformation of the box body can be prevented; and through the design of the raised edges, the support of the bottom of the box body can be increased, so that the bearing effect of the box body can be improved.

The utility model relates to air conditioner installation technical field, and disclose a kind of air conditioner mounting plate's leveling device, the air conditioner mounting plate's leveling device, including support, two groups of scale board are fixedly connected in support bottom;Further include negative pressure adsorption mechanism, negative pressure adsorption mechanism includes the suction disc being set in the both sides of support top, suction disc bottom is fixedly connected with the hollow cylinder body that passes through support interior, piston head is movably installed in hollow cylinder body interior, and one end of piston head is fixedly connected with the support pole that extends out hollow cylinder body interior.Movable suction disc contact mounting plate, air is discharged through hollow cylinder body and one-way valve pipe, suction disc negative pressure adsorption, judge mounting plate level by scale board, when disassembling, pull support pole and drive piston head to leave hollow cylinder body, air enters to cancel adsorption, piston head resets seal after hand release, avoid to cause mounting plate deformation displacement to pull support.

The utility model discloses a kind of automatic baking tea leaf device of aroma, including adjusting mechanism, the adjusting mechanism includes base plate, the base plate top side swing joint has several baking furnace, the base plate top other side is symmetrically provided with foot stool, one of the foot stool side fixedly connected with controller, the foot stool top fixedly connected with top rack, the top rack inboard rotation is connected with several drive wheels, tea leaf temperature gradually cools, after cooling time reaches set period, controller reopens motor and drives mesh basket to reset to baking furnace above continue heating and baking, repeat operation until tea reaches preset aroma requirement, it can be in tea baking process, greatly reduce the input of personnel labor, while reducing the subjectivity of manual operation to cause the baking degree and aroma of different batches of tea to be inconsistent, difficult to meet the demand of customer to stable aroma.

The utility model discloses an electric shovel bucket opening and closing hydraulic damping device, a working device and an electric shovel. The electric shovel bucket opening and closing hydraulic damping device comprises a hydraulic cylinder, a first throttling valve, a switching valve, a one-way valve, a speed regulating valve and an energy accumulator. The hydraulic cylinder comprises a hydraulic cylinder barrel and a hydraulic cylinder piston rod; the throttle valve I is connected with a rodless cavity and a rod cavity of the hydraulic cylinder through a pipeline; the switching valve and the one-way valve are connected in series and then connected with the first throttling valve in parallel through a pipeline. The speed regulating valve is connected with a rodless cavity of the hydraulic cylinder and a control port of the switch valve through a pipeline; and the energy accumulator is connected with a rod cavity of the hydraulic cylinder through a pipeline. Opening and closing buffering of the electric shovel bucket door can be achieved through the hydraulic device, noise and impact are reduced, regular adjustment is not needed in the using process, the downtime is shortened, and the operation efficiency of an electric shovel is improved.

The embodiment of the present application provides an engine multi-connecting rod mechanism, an engine and a vehicle, relates to the technical field of engines, and aims at improving the technical problem that the piston impacts the cylinder wall under the action of the connecting rod in the prior art, thereby causing poor NVH performance.The engine multi-connecting rod mechanism comprises a crankshaft, a piston and an intermediate connecting rod; the intermediate connecting rod comprises a first arm rod and a second arm rod; one end of the first connecting rod, which is away from the crankshaft, is movably connected with the first arm rod; one end of the second connecting rod, which is away from the piston, is movably connected with the connecting part; and one end of the second arm rod, which is away from the first arm rod, is movably connected with the cylinder wall.The intermediate connecting rod is arranged, and the first arm rod and the second arm rod are arranged at an included angle, so that the swing range of the second connecting rod is reduced, the piston is prevented from impacting the cylinder wall during movement in the cylinder wall, vibration and noise caused by the piston impacting the cylinder wall are weakened, and the NVH performance of the engine is improved.

The utility model relates to the technical field of unmanned aerial vehicle devices, in particular to an agricultural unmanned aerial vehicle hoisting device based on multi-mode stable suspension, which comprises a multi-mode suspension structure arranged at the bottom of an unmanned aerial vehicle main body, and is characterized in that the multi-mode suspension structure comprises an electromagnetic lock hook, and a main sling and an auxiliary sling which are arranged on the unmanned aerial vehicle main body; the electromagnetic lock hook is controlled by a circular power source, the main sling is driven by a main sling motor, the auxiliary sling is driven by an auxiliary sling micro motor, and the movable ends of the main sling and the auxiliary sling are jointly connected with the electromagnetic lock hook. Through cooperative control of the main sling and the auxiliary sling, the material swing amplitude can be reduced, the materials are prevented from impacting an unmanned aerial vehicle body or surrounding obstacles, and the flight safety in a complex farmland environment is guaranteed.

The invention discloses a wind vibration resistant and fatigue resistant overhead insulated conductor, and relates to the technical field of insulated conductors, a plurality of anti-puncture metal sheets are laid on the inner side of an outer circle setting insulating sleeve at equal intervals, semicircular pressing belts are bonded to the inner sides of the anti-puncture metal sheets, and a plurality of weight reduction fixed supporting cavities are formed in the inner sides of the semicircular pressing belts at equal intervals; a plurality of biconvex elastic pieces are installed on the inner side of the weight reduction fixed supporting cavity at equal intervals, an external fixed internal resistance cooling fin is bonded to one end of the inner side of the semicircular press-fit belt, a plug-in card embedding groove is formed in one end of the external fixed internal resistance cooling fin, and a plug-in card embedding strip is installed at one end of the external fixed internal resistance cooling fin. According to the invention, through internal multi-position and all-directional energy absorption and buffering, the swing amplitude of the overhead insulated wire is slowed down, and the situation that a fixed joint of the overhead insulated wire is greatly damaged by friction due to large-amplitude swing and traction is avoided, so that the service life of the overhead insulated wire is prolonged, and the service life of the overhead insulated wire is prolonged. And the stability of overhead insulated wire installation and overhead support is ensured.

The invention is applicable to the technical field of tower cranes, and provides an intelligent automatic factory tower crane which comprises a tower body and a balance arm rotationally mounted on the tower body, the balance arm is sleeved with the connecting frame in a sliding mode, and an electric capstan is installed at the top of the connecting frame and used for hoisting goods through a steel wire rope; the connecting plate is arranged at one end of the steel wire rope, and a hook for hanging a cargo rope and a hanging ring is mounted at the bottom of the connecting plate; the connecting ropes are arranged below the connecting frame and used for preventing the connecting plate from swinging, one ends of the connecting ropes are fixedly connected with the connecting plate, and the connecting ropes are arranged on the connecting plate in a triangular shape; and the intelligent control box is arranged on the tower body. According to the intelligent automatic factory tower crane provided by the scheme, through the arrangement of the steel wire rope and the connecting rope arranged in the triangular shape, goods can be effectively prevented from swinging during hoisting, and the hoisting use safety of the tower crane can be improved.

The application relates to a stirrer fixing device and relates to the technical field of sewage treatment, which comprises a mounting frame, a stirring assembly, a lifting assembly and a guide assembly. The mounting frame is fixedly installed on the wall of a sewage pool requiring stirring, the stirring assembly is installed on the mounting frame, the stirring assembly is used for stirring in the sewage pool, the lifting assembly is installed on the mounting frame, the lifting assembly is used for moving the stirring assembly, the guide assembly is installed between the mounting frame and the stirring assembly, and the guide assembly is used for stably moving the stirring assembly. The application has the effect of conveniently maintaining and repairing the stirrer.

This utility model discloses a pressure test device for hydrogeological engineering surveys, including a main body and a support mechanism located on one side of the main body. This support mechanism reduces the sagging caused by the device connecting to the hose through bottom support, ensuring the stability of the connection end. The support mechanism includes a side frame fixedly connected to one side of the foot pad. Water is introduced through an external hose when the valve body is opened. Water is introduced into the pressure test air chamber at one end of the water inlet pipe through a water meter and the valve body. After being pressurized in the pressure test air chamber, water is discharged through a drain pipe. This effectively reduces the sagging caused by the device connecting to the external hose during the assembly and use of pressure tests in hydrogeological engineering surveys. This also ensures that during long-term use, the connection end is not affected by external force accidental contact or impact force generated during water supply, thus reducing the shaking amplitude caused by the impact force. This improves the confidentiality of the connection and reduces the occurrence of water leakage after loosening.

A tensile strength testing device for a safety lead relates to the field of firework lead detection and comprises a bottom plate, a vertical plate, a telescopic rod, a guide rod, a support plate and a fixing clamp, anti-slip blocks are distributed on the lower end face of the bottom plate, the vertical plate is arranged on the upper end face of the bottom plate, the lower end of the vertical plate is hinged to the upper end face of the bottom plate, and the guide rod is transversely arranged at the upper end of the vertical plate. A transversely-arranged supporting plate is arranged at the upper end of one side of the vertical plate, a longitudinally-arranged telescopic rod is arranged on the other side of the vertical plate, a fixing clamp is arranged above the telescopic rod, the upper end of a lead is installed on the fixing clamp, the lead is lapped on a guide rod and the supporting plate, and a weight is installed at the lower end of the lead; according to the utility model, the vertical plate, the fixing clamp and the weight are arranged in a matched manner, so that a traction experiment can be conveniently carried out on a lead mounted on the vertical plate, and experimental data can be conveniently recorded; by arranging the positioning ring, the swing amplitude of the lead is reduced, and the detection precision is improved; the vertical plate and the bottom plate are hinged, so that the vertical plate can be folded, the size of the testing device is reduced, and the occupied space is reduced.

The invention relates to the technical field of hydraulic hoists, in particular to a speed-adjustable hydraulic hoist with a safety protection function, which comprises a hoisting track, a hydraulic hoist is slidably arranged on the hoisting track, the speed of the hydraulic hoist on the hoisting track is adjustable, and the hydraulic hoist is connected with a lifting hook through a steel cable, a first connecting block and a second connecting block. The second connecting block can rotate relative to the first connecting block, the elastic piece is arranged at the rotating joint, when the gravity center of the second connecting block is changed, the second connecting block can rotate relative to the first connecting block, then the swing potential energy of the lifting hook is converted into kinetic energy of force storage of the elastic piece, and therefore the swing amplitude of the lifting hook can be effectively reduced; the abrasion of the steel cable and the lifting hook is reduced, and meanwhile, safety accidents can be avoided.