538results about How to "Prevent tipping" patented technology

The utility model belongs to the field of tensioning machine equipment, and particularly relates to prestressed concrete pole tensioning equipment, which solves the problems of no clamping protection and difficulty in cooling in the prior art, and comprises a support frame and a slide rail plate, and the bottom of the support frame is fixedly connected with a movable base through a screw. The movable base is installed at the top of the sliding rail plate, two symmetrically-arranged lifting screw rods are jointly and rotationally installed in the support frame and the movable base, sliding blocks are arranged on the peripheral faces of the two lifting screw rods in a threaded and sleeving mode, and through arrangement of structures such as a clamping plate and an adjusting screw rod, when a tensioning ejector head starts to work, the sliding blocks are arranged on the sliding blocks in a threaded and sleeving mode; after the servo motor is started, the servo motor drives the placing plate to ascend, meanwhile, the rack plate drives the adjusting screw rod to move towards the tensioning top head through the linkage gear, the ejector rod is driven to move towards the tensioning top head, the tensioning top head is clamped in the middle of the placing plate, and overturning caused by center-of-gravity shift is prevented.

The utility model relates to the technical field of loading machine counter weights, in particular to a loading machine counter weight which comprises a fixing frame, a counter weight box is fixedly installed on the fixing frame, sand is filled in the counter weight box, a moving groove is formed in the fixing frame, a threaded rod is horizontally and rotatably installed in the moving groove, and the threaded rod is fixedly connected with the fixing frame. A driving motor is fixedly mounted at one end of the fixing frame, a threaded rod is sleeved with a moving block in a threaded mode, a mounting plate is fixedly mounted on the lower surface of the moving block, a plurality of fixing frames are mounted on the mounting plate through connecting assemblies, and balancing weights are fixedly mounted on the fixing frames. Through mutual cooperation of the driving motor, the threaded rod, the moving block, the mounting plate, the fixing frame and the balancing weight, the gravity center of the balance weight on the loader can be horizontally adjusted, the loader is prevented from tipping over and tilting backwards, the problem that the gravity center position of a traditional loader balance weight cannot be adjusted is solved, and the overall applicability and flexibility of the loader are improved.

The mooring unmanned aerial vehicle parking system with the leveling and centering functions comprises a case and an automatic lifting device, the automatic lifting device is arranged in the case and comprises a lifting leveling mechanism and a centering mechanism, a parking platform is arranged at the upper end of the lifting leveling mechanism, and the centering mechanism is arranged on the parking platform; the control system comprises a ground controller and an airborne controller, the airborne controller is electrically connected with the ground controller through a photoelectric composite cable, and the ground controller is electrically connected with the automatic lifting device; the unmanned aerial vehicle is placed on the lifting leveling mechanism, the airborne controller is arranged in the unmanned aerial vehicle, and a camera is arranged on the lower side of the unmanned aerial vehicle and connected with the airborne controller; and the automatic take-up and pay-off device is arranged in the case and is in communication connection with the controller. The landing platform solves the problems that in the prior art, the levelness of the landing platform cannot be adjusted, and the landing platform is prone to colliding with other devices in the withdrawing process.

The utility model discloses a multifunctional palette clamp, and belongs to the field of painting tools. The drawing board clamp mainly comprises a drawing board clamp body, a fixing clamp is arranged on the end face of one side of the drawing board clamp body, the fixing clamp is detachably connected with the drawing board clamp body through a connecting mechanism, and the first clamping side of the drawing board clamp body and the second clamping side of the fixing clamp are arranged in a staggered mode; the connecting mechanism comprises a sliding groove and a fixing sliding block which are matched with each other, the fixing sliding block is fixedly connected with the fixing clamp, and the sliding groove is formed in the drawing board clamp. The drawing board clamp is high in universality, the matched end faces of the drawing board clamp and the fixing clamp are inclined faces, so that a certain infolding angle is automatically formed after the drawing board clamp and the fixing clamp are combined, the drawing board clamp is more in line with the hand raising habit and the viewing angle observing habit of students during color mixing, and use is more convenient. The color matching paperboard fixing device is mainly used for fixing the color matching paperboard during drawing.

The invention relates to the field of stackers, in particular to a high-speed ultralight stacker, which is characterized in that a stand column is formed by bending, locking and connecting two metal plates, the process is simple, and a relatively thin steel plate can be adopted to reduce the weight; the strength of the steel plate is greatly enhanced after the steel plate is bent, the bent surface after bending can be used as a guide rail wall or a connecting wall, and additional parts such as a guide rail do not need to be installed. When the operation stability of the stacking machine is guaranteed, the anti-falling devices are arranged on the two sides of the walking assembly, when the stacking machine turns on one side or upwarps, the connecting rods of the anti-falling devices have the movement tendency perpendicular to the rails, and the two anti-falling wheels get close to each other and compress the second elastic elements. At the moment, the second elastic element provides buffering to counteract the inclination trend of the stacking machine, meanwhile, the first elastic element is lengthened, and the buffering capacity is further improved.

The utility model discloses a soil turning device for agricultural product planting, which relates to the technical field of agricultural product planting and comprises a vehicle body frame, supporting columns are arranged at the front end and the rear end of the inner side of the vehicle body frame, a soil loosening mechanism and a soil turning mechanism are respectively arranged at the bottoms of the supporting columns at the front end and the rear end of the vehicle body frame, and moving mechanisms are arranged at the front end and the rear end of the vehicle body frame. A fixed mounting box is arranged at the bottom of the vehicle body frame and located on the rear side of the soil turning mechanism, and a fixed supporting rod is fixedly connected to the side of the supporting column and located between the inner sides of the vehicle body frame. According to the agricultural product planting soil turning device, the soil loosening mechanism is arranged, a servo motor is used for driving a threaded rod to rotate, and a moving block and a connecting rod are driven to move, so that the position and angle of a soil loosening cutter cone are adjusted, and accurate control over the depth and range of soil is achieved. A soil turning mechanism is arranged, a motor is used for driving a synchronous chain and a synchronous chain wheel to rotate, a straight cylinder and soil turning blades are driven to rotate, and uniform soil turning is achieved.

The utility model relates to the technical field of forklifts, and particularly discloses a forklift applicable to a narrow roadway, which comprises a traveling mechanism, a portal frame mechanism and a supporting mechanism, the traveling mechanism comprises a chassis and a driving wheel set, the driving wheel set is positioned below the chassis and is used for driving the chassis to rotate, the portal frame mechanism comprises a portal frame, a mounting frame and a pallet fork, the bottom end of the portal is movably fixed to the chassis and can move in the horizontal direction, the pallet fork is connected with the portal in a liftable mode through a mounting frame, the supporting mechanism comprises a supporting sliding plate, the supporting sliding plate is movably arranged on the chassis and used for supporting the pallet fork, and when the pallet fork moves in the horizontal direction, the supporting sliding plate can move along with the pallet fork, and the pallet fork can move along with the supporting sliding plate. When the pallet fork moves forwards, the supporting point can also move forwards, the forklift is prevented from tipping due to the fact that the gravity center moves forwards, the overall stability is guaranteed, turning with a small turning radius can be achieved through rotation of the chassis, and steering and turning around are facilitated.

The invention relates to the field of crane jib hoisting load detection, and particularly discloses a large crane jib hoisting load intelligent detection method, which comprises the following steps of: detecting and checking a weighing related sensor before weighing so as to guarantee the precision of a measuring instrument; on the basis of historical weighing data and working environment data of the crane, a temperature-weighing deviation correlation model and a wind power-weighing deviation correlation model are constructed, working environment data when the crane extracts heavy objects are obtained, the compensation amount of the hoisting weight of the crane based on environmental factors is analyzed, and then the preliminarily calculated hoisting weight of the crane is corrected; therefore, the influence of environmental factors on the weighing result is reduced, and the reliability of the weighing result is improved. By monitoring the load moment of each section of suspension arm of the crane in real time and comparing the load moment with the allowable maximum load moment, whether the crane is overloaded or not is judged, and early warning is performed, so that a crane overload evaluation system is perfected, and serious accidents such as tipping of the crane due to overload are effectively prevented.

The utility model relates to the technical field of fire-fighting equipment, and provides a fire-fighting smoke exhaust device which comprises a flue, a smoke exhaust fan arranged at one end of the flue and a filter unit arranged at the other end of the flue, the filter unit comprises an outer frame, and two filter screen plates arranged up and down are arranged in the outer frame; limiting on the two filter screen plates is relieved through the second driving mechanism, then the first driving mechanism drives the outer frame to rotate, the using positions of the two filter screen plates are adjusted up and down, then positioning is conducted through the second driving mechanism, and the filter screen plates with more dust attached to the surfaces are changed from the lower portion to the upper portion. The filter screen plate with less dust attached to the surface is replaced from the upper part to the lower part, so that the service life of the filter screen plate is prolonged, the replacement period is prolonged, and the problem that the whole filter screen needs to be replaced or cleaned in the prior art is solved.

The reinforcing structure applied to the aluminum alloy guardrail comprises a bottom plate, a displacement plate and a fixing block, the top of the bottom plate is fixedly connected with two vertical plates, the displacement plate is connected between the two vertical plates in a sliding mode, the fixing block is fixedly connected to the top of the displacement plate, a sliding groove is formed in the fixing block, a limiting mechanism is arranged in the sliding groove, and the limiting mechanism is arranged in the sliding groove. A telescopic guardrail is fixedly connected to the top of the bottom plate, the top of a movable rod of the telescopic guardrail is fixedly connected with the bottom of the displacement plate, fixing mechanisms are arranged on the two sides of the bottom plate, and reinforcing ribs are fixedly connected to one sides of the two vertical plates. The aluminum alloy guardrail solves the problems that the height of an existing aluminum alloy guardrail cannot be conveniently adjusted, so that different height requirements cannot be flexibly met in different places or under different requirements, the applicability and the flexibility of the guardrail are affected, the strength and the stability of the existing aluminum alloy guardrail are poor, and the guardrail is inconvenient to use. And the practicability of the device is reduced.

The utility model belongs to the technical field of molds, and particularly relates to a multi-ejection mechanism of an automobile through type tail lamp injection mold. The tail lamp injection mold comprises a tail lamp injection molding fixed mold and a tail lamp injection molding movable mold, and a plurality of upper molding inlaying seats are arranged in the tail lamp injection molding fixed mold. In the injection molding process, the tail lamp injection molding fixed mold and the tail lamp injection molding movable mold are close to each other, so that the upper molding inlay seat and the lower molding inlay seat are matched in an abutting mode, then a complete cavity is formed through matching of the bottom side auxiliary molding cooling piece, and the bottom side auxiliary molding cooling piece is used for assisting in molding a bottom side structure of a plastic piece. Molten materials are injected into the cavity through the injection molding part, after injection molding is completed, a bottom side component of a plastic part can be cooled through the bottom side auxiliary molding cooling part, the surface quality of a thin-wall part is improved, after mold opening, the molded plastic part can be ejected out in multiple directions through the multiple-direction ejection assembly, the ejection area is large, and the injection molding efficiency is improved. And meanwhile, the plastic part is prevented from inclining and overturning during ejection, and the quality of the plastic part is guaranteed.

The invention relates to a box-type resident platform laying device applied to deep sea, and the device comprises a guide rail device which is used as a basic supporting structure of the whole laying device. The translation mechanism is arranged above the guide rail device, is in contact with the guide rail through a roller device and can freely roll on the guide rail; the turnover mechanism is hinged to the translation mechanism; the stop device is matched with the translation mechanism; and the anti-overturning device is matched with the overturning block of the translation mechanism. The box-type platform is compact and reasonable in structure and convenient to operate, and precise control over the box-type platform is achieved through the precisely-designed translation mechanism and the precisely-designed turnover mechanism. And the translation mechanism is made of a high-strength material and is tightly matched with the guide rail through the roller, so that the stability of the platform in linear motion is ensured. The overturning mechanism can stably overturn the platform from the horizontal state to the vertical state through the flexible hinge design and the advanced overturning driving technology, and powerful support is provided for the platform to smoothly descend into water.

The utility model discloses an indoor and outdoor building decoration material cutting tool, and relates to the technical field of decoration materials. The cutting tool comprises a cutting assembly, a fixing assembly and a dust collection assembly, the cutting assembly comprises a bottom plate, a shell is fixedly installed on the top of the bottom plate, a fixing plate is fixedly installed on the rear side of the top of the bottom plate, and a cutting tool body is arranged on the top of the fixing plate; the fixing assembly comprises an electric telescopic rod. According to the cutting device, the two clamping plates are close to each other, so that a decorative material needing to be cut at the top of the shell can be fixed, the decorative material cannot shake in the cutting process and is more stable, and the situation that the decorative material deviates due to shaking in the cutting process, so that cutting fails is avoided; and therefore, material waste caused by cutting failure is reduced, the decorative material is effectively fixed, the material can be prevented from sliding or turning over, and the safety of an operator and surrounding personnel is ensured.

The invention relates to the technical field of water conservancy and hydropower, and discloses a drilling device and method for water conservancy and hydropower construction.The drilling device comprises two transverse frames arranged in parallel, movement mechanisms are connected to the tail ends of the two sides of each transverse frame, and corresponding operation instructions can be input on a remote control device, so that drilling work is completed; in addition, 360-degree drilling adjustment can be achieved during drilling, drilling in multiple directions is achieved, the drilling range is wide, crawler belt movement is adopted in the moving process, movement is reliable, and movement during drilling is prevented; according to the drilling device, extraction can be achieved during drilling, dust generated in the drilling process is absorbed, and the situation that a large amount of dust is generated during drilling, and consequently environment pollution and harm to bodies of constructors are caused is prevented; adjustment of different heights can be achieved during drilling, drilling at different height positions is achieved, adjustment of the balance weight can be achieved during drilling, and tipping caused by adjustment of the drilling position is prevented.

The invention relates to the technical field of rail transit construction, in particular to prefabricated assembly type base plate intelligent turnover equipment and a using method thereof.The prefabricated assembly type base plate intelligent turnover equipment comprises a base, a turnover supporting frame and a base plate, the turnover supporting frame is formed by arranging a plurality of L-shaped supporting frames side by side, and a first turnover connecting base is arranged on the rear side of the bottom of the long edge of each L-shaped supporting frame; the first overturning connecting seat is connected with the base through a rotating shaft, the front side of the bottom of the long edge of the L-shaped supporting frame is connected with one end of the push rod, one or more base plate supporting seats are arranged in the middle of the top of the long edge of the L-shaped supporting frame, and self-adaptive base plate supporting seats are arranged on the front side and the rear side of each base plate supporting seat respectively. The self-adaptive base plate supporting seat comprises a bottom plate, a top plate, a steel spring and a spring shaft, and the top plate is connected with the bottom plate through the spring shaft and the steel spring. The device has the advantages that the structure is stable, the strength and durability of the structure are enhanced, the operation safety is ensured, and the self-adaptive adjusting function is added.

The utility model discloses a material taking device which comprises at least one material taking arm pair, the material taking arm pair comprises two oppositely arranged material taking arms, the material taking device further comprises at least one damping clamping piece, the damping clamping piece is arranged on the inner side of the at least one material taking arm, and the damping clamping piece is arranged on the inner side of the damping clamping piece. The damping clamping piece can be switched between a first state and a second state, in the first state, the damping clamping piece protrudes out of the inner side face of the material taking arm provided with the damping clamping piece, and in the second state, the damping clamping piece does not protrude out of the inner side face of the material taking arm provided with the damping clamping piece. The utility model further provides a workbin carrying robot.

The martial art quincuncial pile training device comprises an outer pile and a threaded groove, the threaded groove is formed in the top face of the outer pile, a threaded rod is inserted into the threaded groove in a threaded mode, a pile head is fixedly installed on the top face of the threaded rod, an anti-skid pad is fixedly pasted on the top face of the pile head, and a rotating rod is hinged to the bottom face of the pile head through a first hinge base. Supporting rods are hinged to the surfaces of the upper portions of the outer piles through second hinge bases, and an anti-falling net is fixedly connected between the supporting rods. The outer pile has the advantages that the supporting rods, the second hinge bases and the anti-falling net are adopted, during installation, a worker can rotate out the connecting rods from the edge grooves and fixedly connect the connecting rods with connecting rods of other outer piles through fixing bolts, a quincuncial pile group is formed, placement is more stable, the tilting phenomenon is avoided, the worker can unfold the supporting rods through the second hinge bases, and the anti-falling net is arranged on the outer pile. And the anti-falling net can catch the worker when the worker falls, so that the worker is prevented from falling and being hurt, and the use safety is improved.

The present invention relates to a coffee table, and provides a lifting coffee table, comprising a desktop, a bottom support frame, a lifting device and a switch; the lifting device comprises two pairs of cross-hinged support rods, comprising a first support rod and a second support rod, the upper part of the first support rod is rotatably connected with a first pulley, the bottom of the desktop is provided with a first slide rail matching the first pulley, the first pulley can slide along the length direction of the first slide rail, the lower part of the second support rod is rotatably connected with a second pulley, the bottom support frame is provided with a second slide rail matching the second pulley, the second pulley can slide along the length direction of the second slide rail, the lifting device is used to control the lifting of the desktop, and the switch is connected to the lifting device and is used to control the start and stop of the lifting device. The lifting coffee table of the present invention has the advantages of small footprint, convenient lifting, and height adjustable.

The invention discloses a three-way shock insulation support for outdoor substation strut equipment. The device is characterized in that the rod core is fixedly connected to the check block, two horizontal springs are arranged at the two ends of the rod core, a force transmission sleeve is arranged in the middle of the rod core, and outer sleeves are arranged on the outer sides of the force transmission sleeve and the horizontal springs. A hole is formed in the upper side of the force transmission sleeve and connected with the force transmission rod in a riveted mode, and a horizontal hole is formed over the outer sleeve. The bottom plate is of a locally-hollowed X-shaped structure, the center of the bottom plate is a circular steel plate, the friction ring is installed above the bottom plate, and check blocks are arranged at the four corners of the bottom plate. The bottom face of the sliding unit is fixedly connected with the friction ring, the middle plate and the sliding unit are welded through a sliding unit top plate, the dowel bar penetrates through the sliding unit, eight vertical restraining rods are arranged on the periphery of the middle plate, and the vertical restraining rods are welded to the middle plate through base plates below the vertical restraining rods. Vertical springs are arranged on the outer sides of the vertical restraining rods, and top plates are arranged on the upper portions of the vertical springs. A vertical friction unit is arranged between the top plate and the vertical constraint rod and is composed of two semicircular clamps, the clamps are connected through screws, and friction plates are arranged in the semicircular clamps. The three-way shock insulation support is simple in structure, the total height of the three-way shock insulation support is two layers, the risk of derailment is avoided, and the three-way shock insulation support has good spring in-plane constraint and anti-overturning performance.

The utility model relates to the technical field of forklifts, and particularly discloses an anti-tipping structure of a narrow roadway forklift, which comprises a support sliding plate, the support sliding plate is positioned under a pallet fork and is used for supporting the pallet fork, the forklift further comprises a chassis and the pallet fork, a sliding chute is arranged on the chassis along the length direction, and the pallet fork is arranged in the sliding chute. The tail end of the pallet fork is movably arranged in the sliding groove, the supporting sliding plate can also be arranged in the sliding groove in a sliding mode and can move along with the pallet fork in the horizontal direction so as to support the pallet fork, in the process, due to the fact that the supporting sliding plate is located under the pallet fork all the time, instant adjustment of a supporting point can be achieved, the supporting sliding plate can be effectively supported, and the pallet fork can be supported conveniently. And tipping of the forklift is avoided.

The utility model discloses a roller type chemical product storage tank which comprises a tank body, an annular plate is arranged on the outer side of the tank body, a first sliding groove is formed in the inner side of the annular plate, a first sliding block is connected into the first sliding groove in a sliding mode, a first spring is arranged between the first sliding block and a corresponding sliding opening, and one end of the first sliding block is rotationally connected with a first connecting block. The free end of the first connecting block is rotatably connected with a second connecting block, the lower end of the tank body is downwards provided with a supporting column, the outer side of the supporting column is rotatably connected with a supporting rod, the free end of the supporting rod is provided with a universal wheel, the upper side of the supporting rod is provided with a second sliding groove, a limiting rod is arranged in the second sliding groove, and the outer side of the limiting rod is slidably connected with a second sliding block. Second springs are arranged on the outer sides of the limiting rods, and connecting rods are rotationally connected to the upper ends of the second sliding blocks. The storage tank can be conveniently moved, and when the storage tank moves on an uneven road, the jolting feeling can be reduced, and the storage tank is prevented from being overturned.

This invention discloses a forced-drive comb-tooth tower garage suitable for low-rise buildings in the field of automated parking systems. The transverse comb-tooth frame includes a transverse frame with arrayed comb-tooth components on both sides. The lifting comb-tooth frame includes symmetrically arranged lifting frames with fixedly connected adapter frames at both ends. Each adapter frame has a welded forced-drive frame. The lifting frames have arrayed comb-tooth components on their sides and symmetrically distributed rotating rods at their lower ends. Symmetrically distributed rectangular limiting posts are located within the forced-drive frames. In this invention, the limiting plates within the comb-tooth components of the forced-drive comb-tooth tower garage can automatically rotate and rise, preventing vehicle displacement and rollover caused by vibrations during the lifting and lowering of the lifting comb-tooth frame, the exchange of positions between the transverse and lifting comb-tooth frames, and the transverse movement of the transverse comb-tooth frame. The lifting comb-tooth frame has a horizontal detection function and a fault protection function.

The application discloses a self-cleaning float-type water quality monitoring station, comprising: a tire-type float body, the surface of which is provided with a plurality of spacing rings; the buoy body is fixed to the top of the mounting frame, the mounting frame is formed by welding a top frame, a bottom frame, a front frame, a rear frame, a left frame and a right frame, and a first mounting support is arranged in the middle of the bottom frame; a second mounting bracket is arranged between the left frame and the right frame, a detection device is mounted on the second mounting bracket, and an ultrasonic cleaner is arranged beside the detection device; the traction device is arranged on the bank side of the water sample to be detected, a connecting rope is wound on the traction device, and the connecting rope is connected with the limiting ring. The float-type water quality monitoring station is simple in structure, can be provided with various water quality detection devices, is provided with the ultrasonic cleaner, can realize self-cleaning of the float-type water quality monitoring station, and is wide in application range.

The utility model belongs to the technical field of collecting boxes, and particularly relates to an agricultural picking collecting box used for agricultural automatic picking equipment, which comprises a collecting box, a top frame and a bottom frame are fixedly connected to the side wall of the collecting box, two inserting holes are formed in the top frame, two inserting grooves are formed in the bottom frame, and the inserting holes are communicated with the inserting grooves. Two side grooves are formed in each of the two sides of the collecting box, limiting plates are hinged to the inner walls of the side grooves, inner plates are slidably connected to the inner walls of the limiting plates, second magnetic plates are fixedly connected to the inner walls of the limiting plates, and first magnetic plates are fixedly connected to one ends of the inner plates; the inserting holes and the inserting grooves are matched with the inner plate to connect and lock the hanging plate, the collecting box does not need to be manually loaded on the carrying face of the hanging plate during connection, locking is automatically completed only by inserting the hanging plate into the top frame and the bottom frame, the operation portability is improved, the connection stability is improved, and the collecting box is prevented from sliding sideways to topple and fall off; and the mushroom stored in the collecting box is broken due to falling.

The present invention relates to the field of space capsules, and in particular to an environmentally friendly multifunctional outdoor space capsule. It includes a space capsule body and a sunshade, etc.; the space capsule body is slidably connected with a sunshade for blocking sunlight. The present invention realizes that when encountering severe weather such as heavy rain or rainstorm or when the guest does not use the balcony, the guest can put the small balcony composed of the sunshade, the first extension plate, the second extension plate and the bottom plate into the space capsule body; prevent the small balcony from being exposed to wind, rain and sunlight for a long time, reduce the problem of damage to the small balcony itself in the environment, so as to extend the service life, shorten the surface repair cycle, and reduce the probability of natural garbage such as dust and leaves falling into the small balcony, so that the guest does not need to spend a lot of time cleaning when checking in; at the same time, reduce the footprint of the space capsule and improve the land utilization rate.

The invention relates to the technical field of mine car cab structures, in particular to a mine car cab high-safety anti-torsion structure which comprises a mine car body, a cab base is fixedly mounted on the mine car body, a plurality of reinforcing columns are fixedly connected to the cab base, and a cab footstock is fixedly connected to the reinforcing columns. Wherein a retracting and releasing mechanism is rotatably connected in the two reinforcing columns, a moving frame is rotatably connected to the retracting and releasing mechanism, an anti-toppling mechanism is arranged in the moving frame in a sliding fit mode, and a transmission mechanism is rotatably connected in the moving frame. The mine car is supported, the danger that the mine car turns on one side or inclines too much can be effectively avoided, the life safety and operation safety of miners are guaranteed, the stability of the mine car in a complex operation environment is effectively improved, the risk of accidents is reduced, and safety and high efficiency of mine operation are guaranteed.

The invention relates to a braking universal roller for a luggage case, comprising a roller housing which can be pivoted in a direction of travel by means of a pivoting means, and two travel wheels which are rotatably mounted on the roller housing on a horizontal axle, wherein the pivoting means is arranged in front of the axle when viewed in a direction opposite the direction of travel and has a braking device which is adjustably designed between a braking position, in which the braking device exerts a braking force on at least one travel wheel, and a free travel position, in which the braking device exerts a braking force on the at least one travel wheel, in the free travel position, the brake device releases the travel wheel. A brake pedal for generating a braking force is pivotally supported on the roller housing by a pedal shaft which extends parallel to the axle and is arranged between the traveling wheels, and at least one brake shoe arranged on the brake pedal exerts a braking force parallel to the axle directly on one side of at least one traveling wheel in the braking position.

The invention relates to a base capable of swinging and rotating, which comprises a base frame, a rotating seat arranged on the base frame, and two swinging assemblies which are detachably arranged on the rotating seat, can synchronously rotate along with the rotating seat and are positioned on two opposite sides of the rotating seat, each swing assembly comprises a supporting plate, a mounting plate and two connecting pieces, wherein the two ends of the two connecting pieces are correspondingly pivoted to the supporting plate and the mounting plate, and the two connecting pieces are arranged at intervals. The mounting plate is of an L-shaped structure and comprises a vertical connecting part and a horizontal mounting part, the bottom end of the vertical connecting part is pivoted with the connecting piece, the top end of the vertical connecting part is parallel to the rotating seat, and the horizontal mounting part is bent from the top end of the vertical connecting part to the direction far away from the connecting piece; a limiting mechanism used for limiting the swing amplitude of the connecting piece is arranged on the outer side wall of the supporting plate. The multifunctional chair can swing front and back and can also rotate, different use requirements are met, the problem of forward sliding can be avoided through the structure of the mounting plate, and the use comfort level is improved.

The utility model relates to the technical field of coating viscosity measuring meters, in particular to a coating viscosity measuring meter which comprises a base, a fixing assembly is arranged on the front side of the base surface of the base, a containing cup is arranged in the fixing assembly, a supporting rod is arranged on the rear side of the base surface of the base, an adjusting sleeve is arranged on the outer wall of the supporting rod, and the adjusting sleeve is connected with the base surface of the base. A fixing assembly is arranged on the coating viscosity measuring meter, after a containing cup is placed on a bottom plate, a first pressing rod and a second pressing rod are pressed inwards, a limiting block can be driven to move to the outer side of a clamping groove through the first pressing rod and the second pressing rod, and then a first adjusting plate and a second adjusting plate slide; the first fixing plate and the second fixing plate can be driven to move through the first adjusting plate and the second adjusting plate, the containing cup can be limited through the first fixing plate and the second fixing plate, and therefore the containing cup can be placed more stably, the situation of tilting is avoided, and the whole device is simple in structure, convenient to operate and higher in practicability.

The invention relates to the technical field of unmanned aerial vehicles, and provides a special unmanned aerial vehicle for geographic information surveying and mapping. The multiple lifting legs are arranged on the rack in a lifting mode, the lifting legs are used for supporting the ground to guarantee balance of the rack, and teeth are arranged on the lifting legs; the plurality of rotating shafts are rotationally arranged on the rack; the gear is arranged on the rotating shaft, meshed with the teeth and used for driving the lifting leg to ascend and descend. According to the technical scheme, the problems that in the prior art, when field geographic information surveying and mapping are carried out, the plane terrain is difficult to find, and the unmanned aerial vehicle may roll over due to inclination during landing are solved.