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50 results about "Heavy duty" patented technology

Tripod (heavy duty)

ActiveCN310040205SProcess engineeringHeavy duty
1. Name of the designed product: tripod (heavy duty). 2. Use of the designed product: for supporting various equipment. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.
Owner:HUBEI MIBO INTELLIGENT TECH CO LTD

Counterweight arm adjustable heavy duty robot

PendingCN122275076Aincrease or decrease quantityImprove work efficiencyRobot handBalancing machine
This invention relates to the field of industrial robots, specifically to a heavy-duty robot with an adjustable counterweight arm. A robotic arm structure and a counterweight structure are respectively arranged on both sides of a support column. A first motor is located above the support column, and the output end of the first motor is connected to a first lead screw. The first motor drives the first lead screw to rotate, controlling the robotic arm structure to move up and down along the lead screw. A connecting structure is provided between the robotic arm structure and the counterweight structure. The counterweight structure contains several counterweight blocks, and a counterweight adjustment component is located on one side of the counterweight structure. The counterweight adjustment component can automatically increase or decrease the number of counterweight blocks inside the counterweight structure to balance the weight of the robotic arm structure. The adjustment is automatic based on the weight difference between one side of the robotic arm structure and the other side of the counterweight structure, eliminating the need for manual adjustment of the number of counterweight blocks and improving work efficiency.
Owner:CHONGQING CITY VOCATIONAL COLLEGE

An engine waste heat boosted thermal management system for hydrogen fuel heavy duty trucks

The application discloses an engine waste heat boosting type thermal management system for a hydrogen fuel heavy truck, comprising an engine cooling circuit, a primary heat pump circuit, a secondary heat pump circuit, a phase change heat storage unit and a working condition adaptive unit; in the cooling circuit, the coolant absorbs waste heat and is directly stored in the phase change heat storage unit or transferred to the primary heat pump circuit; the primary heat pump circuit absorbs heat of the engine cooling circuit to be warmed up and is directly stored in the phase change heat storage unit or transferred to the secondary heat pump circuit; the secondary heat pump circuit absorbs heat of the primary heat pump circuit to be warmed up and is stored in the phase change heat storage unit, and the phase change heat storage unit stores waste heat transferred by the three circuits. The working condition adaptive unit collects vehicle data to determine the working condition and switches the heavy load, medium load and light load modes. The application has a simple overall structure, realizes efficient recovery of low-grade waste heat of a hydrogen engine, significantly improves waste heat recovery efficiency and system comprehensive energy efficiency, and provides an efficient and reliable waste heat recovery and thermal management scheme for the hydrogen fuel heavy truck.
Owner:BEIJING INST OF TECH

Extreme pressure antiwear agent, method of making, and heavy duty vehicle gear oil

The application provides an extreme pressure anti-wear agent, a preparation method thereof and heavy load vehicle gear oil, and belongs to the technical field of extreme pressure anti-wear additives. The application provides an extreme pressure anti-wear agent with a chemical structure shown in formula I or formula II. Through molecular design, the prepared extreme pressure anti-wear agent has excellent high-temperature oxidation resistance, can reduce the friction coefficient of the surface of a friction pair, and in the friction process, nitrogen elements and boron elements in the borate ester diffuse from the friction surface to the matrix to form a permeation layer, improve the wear resistance of the surface of the material, play an extreme pressure anti-wear role, make the heavy load vehicle gear oil have better load-carrying capacity and extreme pressure resistance, and thus play an energy-saving and consumption-reducing role.
Owner:ZHENGZHOU OPTRIS SCI & TECH CO LTD +1

A method for remote monitoring of real road emissions of heavy duty vehicles

This invention relates to a method for calculating the actual road emissions of heavy-duty vehicles under remote monitoring. Based on the three-zone moving average window method, a three-zone moving average window model is established using a fixed duration of 300 seconds. The corresponding load ratio is calculated based on the carbon dioxide emissions of each window. The window, moving second by second, is divided into idling, low-load, and medium-high load zones according to the load ratio. Emission values ​​for the three zones are calculated, and it is verified whether the emissions in each zone exceed the limits. The beneficial effects are: This invention solves the current limitation of existing calculation methods for verifying the actual driving emission levels of vehicles after receiving emission data from networked vehicles on a remote platform. It can fully utilize networked vehicle emission data, taking into account emission data under idling and low-load conditions. It has no strict requirements on vehicle load and data continuity, does not distinguish between vehicle types, simplifies the monitoring procedure, and has strong adaptability and wide application range.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD

Heavy duty tire

PendingCN122295228AHeavy dutyMechanical engineering
In the heavy-duty tire according to the invention, the tread portion is provided with a belt consisting of one or more belt layers and one or more belt reinforcement layers disposed radially outward of the belt. The belt reinforcement layers are formed of rubber-coated reinforcing cords. Each reinforcing cord extends from one end of the belt reinforcement layer to the other end and is cut at both ends. Each reinforcing cord is further divided at one or more locations between the two ends. The division points of the reinforcing cords are located on the same straight line spanning multiple reinforcing cords.
Owner:BRIDGESTONE CORP

Double output heavy duty dynamic balancing machine gear box

The utility model discloses a double output heavy load dynamic balancing machine gear box, specifically related to gear box technical field, including bottom plate, the bottom plate top is installed with installation box, the rear of inside installation box is provided with drive motor, the front of inside installation box is provided with electromagnetic clutch, the outside of electromagnetic clutch is provided with electromagnetic clutch protective cover, the front of right -hand member of bottom plate is provided with telescopic drive flange, the left end of telescopic drive flange is provided with dial, the front of auxiliary drive mechanism outer surface symmetry is installed with primary drive gear and secondary drive gear. The utility model discloses a double output heavy load dynamic balancing machine gear box, when using, electromagnetic clutch and double gear coordination have realized electromagnetic gear function, and two gears can be switched at will, do not interfere with each other, solve the problem that traditional head tank hangs single mode, convenient operation, adapt to different test scene demand.
Owner:JINAN HENGXU TESTING MACHINE TECH

Heavy duty cushioned carton

ActiveCN224477320UCushioningCarton
This utility model discloses a heavy-duty cushioning packaging carton, relating to the field of packaging carton technology. It includes a main body of the packaging carton, with a cushioning support plate movably connected to one side of the main body. A cushioning squeezer is fixedly connected to one side surface of the cushioning support plate. By setting cushioning support plates on both inner walls of the main body of the packaging carton, and setting multiple cushioning squeezers at various positions between the cushioning support plates and the main body of the packaging carton, when external compression occurs on the main body of the packaging carton, the cushioning squeeze contact blocks are compressed. The cushioning squeeze plate performs a compression operation, directly compressing and stretching; the sliding squeeze disc achieves an up-and-down pushing effect, sliding on a limiting slide rail; and the compression buffer spring achieves side-top compression. The sliding friction between the sliding squeeze disc and the limiting slide rail counteracts the elastic potential energy of the compression buffer spring, thereby achieving a synchronous up-and-down cushioning effect.
Owner:CHANGSHU JIAHE PAPER PROD TECH CO LTD

Heavy duty manual flipper mechanism

ActiveCN224428496Uachieve simplicitySimplified clamshell structureControl theoryHeavy duty
This utility model discloses a heavy-duty manual flip-top mechanism, specifically relating to the field of vacuum equipment technology. It includes a housing assembly and a flip-top arm for connecting a heavy-duty cover plate. The housing assembly includes a support housing serving as a support point and a rotating wheel for applying flip-top power. A rotating shaft is rotatably connected inside the support housing, with both ends of the shaft extending from opposite sides of the housing. The end of the rotating shaft is fixedly connected to one end of the flip-top arm. A transmission mechanism is provided between the rotating wheel and the rotating shaft. A pin connecting block for connecting to the heavy-duty cover plate is fixedly installed inside the end of the flip-top arm away from the rotating shaft. This utility model, by setting up the housing assembly and the flip-top arm, enables manual control of the flip-top of a heavy-duty cover plate, simplifying existing flip-top structures, reducing the complexity of the entire device, simplifying the flip-top operation during frequent opening and maintenance, and improving control flexibility and safety. It is applicable to this field.
Owner:TRUTH EQUIP CO LTD

Heavy duty tire

ActiveUS12679144B2Full bandHeavy duty
Provided is a heavy duty tire 2 that can suppress a decrease in durability due to the provision of a band and can achieve improvement of uneven wear resistance. The tire 2 includes a reinforcing layer 20 and a tread 4. The tread 4 has shoulder circumferential grooves 34. The reinforcing layer 20 includes a belt 52 and a band 54. The belt 52 includes an inner belt ply 74 and an outer belt ply 76. The band 54 includes a full band 66. The full band 66 is located between the inner belt ply 74 and the outer belt ply 76. A distance UFc between the full band 66 and the inner belt ply 74 is longer than a distance SFc between the full band 66 and the outer belt ply 76 at an equator plane of the tire 2.
Owner:SUMITOMO RUBBER INDUSTRIES LTD

Superconducting permanent magnet sheet shuttle for heavy duty wide fabric weft insertion and its recovery device

ActiveCN116516557BAuxillary apparatusShuttlesHeavy loadHeavy duty
A superconducting permanent magnetic piece shuttle for heavy load wide fabric weft insertion and its recovery device, including shuttle body, superconductor, permanent magnet array and weft gripper, the middle part of the lower end surface of the shuttle body is provided with the permanent magnet array which interacts with the traveling wave magnetic field to realize the weft insertion movement of the piece shuttle, the inside of the shuttle body is provided with the weft gripper for clamping weft, both sides of the shuttle body are provided with a number of through cavities, both sides of the shuttle body are provided with a number of grooves which are communicated with the through cavities, the superconductor which interacts with the track of the permanent magnet array to realize the suspension of the piece shuttle is inserted in the through cavities; the recovery device includes three-axis moving chuck and synchronous belt, the synchronous belt includes a number of synchronous belts, the first synchronous belt is arranged downwardly, the second synchronous belt is arranged horizontally, the two sides of the second synchronous belt are provided with liquid nitrogen pools for cooling the superconductor through the grooves. The design not only realizes the weft insertion of heavy load wide fabric, but also improves the adaptability of weft.
Owner:WUHAN TEXTILE UNIV

Disconnectable valve bridge for valve train of heavy duty internal combustion engine

The invention relates to a breakable valve bridge for a valve train of a heavy-duty internal combustion engine. To ensure a continuous supply of pressure oil to an axial oil duct in the pressure piston, an active surface of a head of the pressure piston for a contact foot of a tappet is arranged directly on an upper side of a pressure block, which is axially movable relative to the pressure piston and is subjected to a force acting away from the pressure piston by means of a spring, the pressure block being seated in a bore in an end face of the pressure piston, wherein each coupling slider is provided with a stepped flat on the upper side starting from an inner end face, the coupling slider being movable into a coupling groove of the pressure piston configured as a pocket or an annular groove by means of the flat when coupling.
Owner:SCHAEFFLER TECHNOLOGIES AG & CO KG

High pressure heavy duty double screw pump

PendingCN122280842AHeavy dutyScrew pump
This invention provides a high-pressure, heavy-duty twin-screw pump, relating to the field of twin-screw pumps, specifically comprising: a pump body with an inlet and an outlet on its periphery; a base located at the bottom of the pump body; and multiple bushings coaxially fixed to the periphery of the pump body, each bushing being rotatably connected to the base via a rotating fit structure; a circumferential tightening mechanism is designed between the base and the pump body. This technical solution allows the pump body to rotate circumferentially relative to the base, enabling free adjustment of the orientation of the inlet and outlet on the pump body, perfectly adapting to different on-site pipeline layouts without the need for additional adapter fittings or pipeline modifications, significantly improving the flexibility and adaptability of pump installation, and reducing on-site installation costs and construction difficulty.
Owner:TIANJIN JUNYU TECH CO LTD

Multi-vehicle cooperative lane-changing method and system based on reinforcement learning in mixed traffic environment

The application relates to the technical field of intelligent driving, in particular to a multi-vehicle cooperative lane-changing method and system based on reinforcement learning in a mixed traffic environment, vehicle information and environment information are acquired in real time; according to the vehicle information and the environment information, a double-layer decision model is constructed to plan a driving track and a driving speed of the vehicle; a high layer of the decision model determines an optimal vehicle behavior according to the vehicle information and the environment information, and a low layer plans the driving track and the speed according to the optimal vehicle behavior and the vehicle information; in the planned driving track and speed, a collision ellipse model is constructed to detect a conflict between an ICV (Intelligent Connected Vehicle) and an HDV (Heavy Duty Vehicle) according to the track and the speed, and the driving speed is adjusted according to the conflict. The scheme can improve the multi-vehicle cooperative scheduling efficiency and the adaptability to a dynamic traffic environment.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST

Heavy duty plate feeder

ActiveCN224336519USupporting framesControl theoryHeavy duty
This utility model relates to the technical field of plate feeders, specifically a heavy-duty plate feeder, comprising a body, a limiting shell, limiting plates, and support legs. The limiting shell is installed at the top of the body, and its inner width is adapted to the middle width of the body. Two limiting plates are rotatably mounted on one side of the discharge port of the limiting shell. The sides of the limiting plates are equipped with adjustment components for moving the bottom of the limiting plates towards the center of the discharge port during use. Multiple support legs are installed on the bottom sides of the body. This utility model uses the limiting shell to limit the material being conveyed by the body, effectively preventing material leakage. Simultaneously, the adjustment components rotate the limiting plates on the discharge port side of the limiting shell, causing the bottom of the limiting plates to move towards the center of the discharge port, thus adjusting the width of the discharge port and making the width adjustment of the discharge port more convenient.
Owner:KASHGAR HONGQI CEMENT CO LTD

Heavy duty die testing press

ActiveCN117818125Bsmooth motionsmooth turningGear wheelControl engineering
The present application discloses a kind of heavy die test press machines, including body frame, main oil cylinder, body frame is made of lower crossbeam, column and upper crossbeam.Key features include slider, lifting cylinder, motor, friction stopper and moving platform.Slider includes rotary slider, pressurized slider and side slider, wherein pressurized slider is installed in frame by guide rail, connected with main oil cylinder.Side slider moves up and down through guide assembly and guide rail, and double-side lifting cylinder drives its action.Rotary slider connects two side sliders through rotary shaft, and motor is installed on side slider, rotary motion is realized through driving gear and rotary gear.Moving platform is installed on lower crossbeam, used for installing lower die.Through innovative double-side synchronous drive and gear set driving, the test press machine improves system stability, rotary load capacity and test function, and provides significant technical advantage for large, heavy die test requirements.
Owner:TIANJIN TIANDUAN PRESS CO LTD

Heavy duty plate feeder

PendingCN122443878AChain linkHeavy duty
The present application relates to the technical field of plate feeder, and discloses a heavy plate feeder, which comprises a rack, a chain and chain plates, the chain is rotationally arranged on the rack, the chain plates are arranged in plurality, the chain plates are connected to the chain, and the adjacent chain plates are connected through clamping, the chain plate comprises a main body, a connecting part, a clamping hook, a matching part and a clamping groove, the main body is connected to the chain, one end of the main body is provided with the connecting part, the connecting part is connected with the clamping hook, the other end of the main body is provided with the matching part, the clamping groove is formed at the matching part, and the clamping hook and the clamping groove of the adjacent chain plates are connected through clamping. Through the clamping connection between the adjacent chain plates, the joint gap is eliminated, the small material and the powder can be effectively prevented from falling from the gap between the plates, the material scattering and leakage are prevented, the material waste is avoided, the material load and the running impact force can be transmitted and shared between the adjacent chain plates through the clamping structure, the local stress of the single chain plate is reduced, and the service life of the equipment is prolonged.
Owner:SICHUAN HUANGLONG INTELLIGENT BROKEN TECHNOLOGY LIMITED BY SHARE LTD

A heavy-duty scooter

ActiveCN224392833ULuggage carriersControl theoryHeavy duty
The utility model discloses a heavy duty scooter, including scooter main part and install on the rear end of scooter main part's goods shelf subassembly, and goods shelf subassembly includes two and is all the V shape setting's support frame, and support frame is installed in the rear end of scooter main part in parallel and symmetry, and the top of support frame all sets up one piece mounting plate of width size greater than support frame width size, and mounting plate all has seted up the mounting groove, bearing plate is provided with not less than two, and bearing plate is respectively installed in the top on mounting plate symmetry, and bearing plate is detachable connection through mounting groove and mounting plate, and bearing plate all is the telescopic setting, and the telescopic end of bearing plate respectively faces the outside of scooter main part, and reinforcing plate, reinforcing plate is provided with not less than two the reinforcing plate all installs on support frame, and the both ends of reinforcing plate respectively with two support frame through bolt connection, the advantage is, can carry the suitcase of different size different specifications.
Owner:JINHUA VMAX TECH CO LTD

Heavy duty vehicle balance axle suspension

The utility model belongs to the technical field of automobile parts, disclose a kind of heavy load automobile balance axle suspension, specific technical solutions are as follows: including main body, main body is provided with saddle, balance lever connecting seat, balance axle support, first connecting plate and second connecting plate, saddle is arranged at the top of main body, two seat bodies of symmetrical arrangement are on saddle, first U type lightening recess is opened between two seat bodies, balance lever connecting seat is arranged at the bottom of main body, first connecting seat and second connecting seat are equipped on balance lever connecting seat, balance axle support is arranged at the middle of main body, the side of first connecting plate is connected with main body by first muscle plate, the other side of first connecting plate is connected with main body by second muscle plate, second connecting plate is arranged at the bottom of main body, the utility model is removed surplus material by structure optimization, weight is reduced by 15.1%, eliminates the inherent defect of key section, realizes integrated modular design production, can satisfy the demand of lightweight automobile.
Owner:TAI YUAN SAN GAO ENERGY RESOURCES DEV LTD CO

Common rail fuel system for heavy duty 12v diesel engines

The utility model discloses a kind of common rail fuel systems of heavy 12V diesel engine, belong to engine technical field, including the cylinder block of V-type arrangement, six cylinder holes are arranged on each side cylinder block;The high-pressure common rail pump is arranged in the inner wall middle part of the cylinder block of V-type arrangement, high-pressure oil pump is arranged in the lower part of the inner wall of the cylinder block of V-type arrangement, and the high-pressure oil pump is connected with common rail pipe by high-pressure oil pipe respectively;Fuel injector is arranged on the cylinder hole, and each side common rail pipe is connected with corresponding side several fuel injectors by several high-pressure oil pipes respectively.The utility model installs high-pressure common rail pump in fuel system according to diesel engine demand state, provides sufficient fuel supply for diesel engine, solves the arrangement problem in the V-type included angle of heavy 12V diesel engine common rail fuel system, and guarantees the sufficient fuel supply of heavy 12V diesel engine.
Owner:HEBEI HUABEI DIESEL ENGINE

Heavy duty lift and tilt vehicle

The utility model discloses a heavy load lifting translation car, including translation car frame assembly, track subassembly, shearing type hydraulic pressure lifting system, chain type roller conveying system and locking positioning device, the track subassembly is laid in the pit, the translation car frame assembly can be horizontally removed in the upper end of track subassembly, is used for controlling the translation of car body, shearing type hydraulic pressure lifting system sets up in the upper end of translation car frame assembly, is used for controlling the lifting of car body, chain type roller conveying system sets up in the upper end of shearing type hydraulic pressure lifting system, is used for controlling the horizontal removal handover of car body, and this heavy load lifting translation car realizes lifting - translation compound motion through shearing type hydraulic system embedded design, has solved the shortcoming of wide land occupation, high cost of conventional split equipment, and through locking positioning device, eliminates the subsidence risk when the common rail handover, satisfies the coating conveying demand of 14 tons level passenger train car body.
Owner:ZHONGQI CHANGXING (LUOYANG) ELECTROMECHANICAL EQUIP ENG CO LTD +2

A heavy duty pallet

ActiveCN224491904UPilot holeHeavy load
The utility model discloses a heavy load tray, including tray body, be equipped with the profiling loading recess on the tray body, the recess bottom of profiling loading recess is equipped with vertical guide hole, and the vertical guide hole is slidably connected with vertical guide column, and the upper end of vertical guide column is connected with profiling loading load plate, be equipped with horizontal guide hole on profiling loading recess, and the horizontal guide hole is slidably connected with horizontal guide column, and one end of horizontal guide column is equipped with the clamping block, and the tray body is equipped with the apron outward, the lower of horizontal guide hole is equipped with first dial swing hole, and the outside of vertical guide hole is equipped with second dial swing hole, and the upper end of first dial swing hole is connected with horizontal guide hole, and the lower end is connected with second dial swing hole, and the outside of second dial swing hole is connected with first dial swing hole, and the inside is connected with vertical guide hole, and the dial groove is equipped on horizontal guide column, and the L type composite dial arm is rotatably connected on the tray body. This tray is strong, and transportation is stable and reliable, and the overall function is perfect, and the practicality is strong.
Owner:ZHEJIANG ZHONGBEI MACHINERY CO LTD

Heavy duty shelving lift

ActiveCN224298794ULifting framesControl theoryHeavy duty
The utility model relates to the technical field of goods shelf elevating, disclose a kind of heavy goods shelf elevating equipment, including bottom plate and goods shelf, the goods shelf is located above bottom plate, supporting frame is installed on the bottom plate, the both sides of the supporting frame are respectively provided with first slide rail assembly and second slide rail assembly, can be placed to bottom plate by transport device to goods shelf, again by the lifting drive device being set on supporting frame and drive connecting plate down, by the bottom extrusion connecting plate of connecting plate of top link overturning component, drive plug rod rotates upwards, make plug rod and the bottom of goods shelf contact, lift goods shelf, again let material transfer trolley shift to the bottom of goods shelf, again by lifting drive device and drive connecting plate ascending, let plug rod reset, so that goods shelf can be placed to material transfer trolley, by material transfer trolley and transport goods shelf to stacking station, without manual operation, increase work efficiency, solve the dependence on manual operation in prior art, low efficiency and high labor intensity.
Owner:KUNSHAN YZD AUTOMATION EQUIP CO LTD

Heavy duty tire

PendingEP4768280A1Heavy duty tyresHeavy duty vehicleStructural engineeringRoad surface
A heavy duty tire 2 includes a tread 4 having one or more center circumferential grooves 16. A center portion 28 of the tread 4 includes center land portions 22 each including lateral grooves 32 arranged in the center portion 28 such that a reference lateral groove and a corresponding lateral groove respectively located on one side and another side in a circumferential direction constitute one lateral groove pair. Second and first ends Es and Ef of the reference lateral groove and the corresponding lateral groove in the lateral groove pair are at the same position in the circumferential direction. The one or more center circumferential grooves 16 include at least one circumferential narrow groove 44 having a pair of wall surfaces 44S that come into contact with each other at a narrow groove portion 48 when the tread 4 comes into contact with a road surface and becomes deformed.
Owner:SUMITOMO RUBBER INDUSTRIES LTD

Heavy duty folding ramp

ActiveCN224410897Uachieve foldingRealize expansionIn vehicleControl theory
The utility model belongs to the technical field of vehicle-mounted accessories, and specifically discloses a heavy folding ramp, which comprises an upper half and a lower half, the upper half and the lower half are both arc-shaped frame structures, one end of the lower half is fixedly connected with a rotating shaft, the rotating shaft is movably connected to the upper half, the upper half is provided with a limiting groove for the movement of the rotating shaft along the extension direction of the upper half, and the two ends of the limiting groove are respectively provided with a first limiting structure and a second limiting structure for the positioning rotation of the rotating shaft. The utility model has the advantages of simple structure and convenient operation. The inner-outer staggered folding design of the upper half and the lower half makes the volume of the folded ramp smaller, and the ramp has two supporting points with the ground after being unfolded. Moreover, the support in the middle is not provided by the external accessories, but by the side pipes of the ramp itself, so that the strength is better and the load is larger.
Owner:ZHEJIANG XINSHENG ALUMINUM TECH CO LTD

Heavy duty support legs and heavy duty support stands

This invention relates to a heavy-duty support leg and a heavy-duty support tripod incorporating the heavy-duty support leg. The heavy-duty support leg comprises a main support leg and a secondary support leg with two tubes. The secondary support leg is movably mounted on the main support leg and includes a first leg and a second leg. Locking parts are provided at both ends of the main support leg along its axial direction, respectively restricting the movement of the first and second legs along the axial direction of the main support leg. Each locking part includes a mounting base and a locking structure, which can move radially along the main support leg. The heavy-duty support leg is equipped with a pull line connecting the two locking parts, enabling the two locking structures to be linked and simultaneously switched between unlocked and locked states. The heavy-duty support leg features a double-row tube configuration, improving strength and stability, and can support heavier shooting equipment. Multiple locking parts work together to achieve one-button locking or unlocking, eliminating the need for separate locking or unlocking, making operation convenient. The secondary support leg can be completely retracted into the main support leg, facilitating storage and portability.
Owner:SHENZHEN WEIJI TECHNOLOGY CO LTD