284 results about "Gravity center" patented technology

The invention discloses a battery tank structure of an unmanned aerial vehicle (UAV) and relates to the technologies of battery tank structures of UAVs. The battery tank structure can solve the problem of large space occupation of a battery tank of an existing UAV. A main battery tank body is of a rectangular structure, is placed in the middle of a UAV body, the side wall of the tank body is provided with a plurality of positioning holes, and a battery locking mechanism is fixed by the positioning holes and fixedly connected to a battery after the battery is inserted into the battery tank; byfixing the battery locking mechanism to the positioning holes in different positions, the position of the battery in the whole UAV body is adjusted, and correspondingly the position of the gravity center of the UAV body is adjusted. The structure is mainly used for UAVs.

The application relates to a centrifugal device and method for detecting animal serum samples and relates to the technical field of serum sample detection. The device comprises a body, a spline is rotationally connected to the bottom of the body cavity through a motor, a bracket is connected to the upper end of the spline in a concave-convex abutting mode, an electrically conductive slip ring is arranged on the outside of the motor output end of the bottom of the body cavity, and a stator on the outside of the electrically conductive slip ring is fixed in the cavity of the body through a connecting rod. Through cooperation of a clamping assembly, a sleeve, a clamping seat and a tube clamp, the clamping seat is driven to rotate by rotating the rotating sleeve, the tube clamp is opened and closed in an interlaced mode through meshing of the connecting plate and the gear, various sizes of serum test tubes can be clamped, special parts need not be replaced, work efficiency is improved, meanwhile, when the number of test tubes is odd, the gravity sensor senses the weight, the electric push rod pushes the connecting frame on the symmetrical position to adjust the position, the gravity center is adjusted through cooperation of the rotating structure, the bracket is balanced, sample spilling and pollution are avoided.

The application provides an online-offline hoisting method and an online-offline hoisting system, and relates to the technical field of insulator detection. The online-offline hoisting method is used for realizing the online or offline action of an insulator detection robot. The insulator detection robot is provided with at least one hoisting frame and a plurality of mechanical arm claws. The at least one hoisting frame and at least one of the mechanical arm claws are offset from the gravity center of the insulator detection robot. The asymmetric structure of the robot and the gravity self-guiding mechanism are used. When online, a single point is hoisted to trigger natural inclination, so that the anchoring clamps approach the insulator steel cap in a non-coplanar posture. When offline, the hooking is smooth and there is no shielding. Without external precise positioning or manual intervention, the reliability, safety and universality of the online-offline operation of the insulator detection robot are significantly improved.

The application discloses an adjustable counterweight mechanism applied to a tractor test verification link and belongs to the technical field of counterweight simulation, which comprises a bearing frame, three fixing lugs are arranged on one side of the bearing frame, four supporting legs are arranged below the bearing frame, a protection pad is arranged below each supporting leg, a rectangular opening is formed in the middle of the bearing frame, a pair of fixing plates is symmetrically arranged on the two sides of the opening, a lead screw one is rotatably arranged between the two fixing plates, the lead screw one is rotatably connected with the fixing plates by penetrating through the two fixing plates at the two ends, a motor is fixedly connected with one end of the lead screw one, a lead screw sleeve is threadedly connected with the lead screw one, and a gravity center adjusting platform is fixedly arranged above the lead screw sleeve. The adjustable counterweight mechanism can not only adjust the weight, but also adjust the left-right weight distribution and the front-rear gravity center, so that different operation conditions or machine forms can be more accurately and conveniently simulated.

The utility model discloses a kind of transport elevators of plastic master batch processing, including base, the bracket one and bracket two are fixedly connected with the base top portion. In the present application, after raw materials are put into placing bin, driving member drives transmission rod to rotate, transmission rod provides traction force for screw sleeve and placing bin by screwing with screw sleeve, placing bin goes up and drives sliding sleeve to slide along slide rod, until to the appropriate height after placing bin rises, telescopic member pushes sleeve to extend the direction of the inclined end of discharge pipe specified length, discharge pipe open end is erected to the feed end of next process, then placing bin discharge opening opens, raw materials are transferred to next process by the material guide channel formed by discharge pipe and sleeve, so that in the lifting stage of placing bin, the gravity center of elevator is always in middle position, and in the discharging stage, the amount of raw materials passing through discharge pipe and sleeve per unit time affects the gravity center offset, so as to improve the stability of plastic master batch processing transport elevator use.

The application discloses a material blocking pre-judgment and collaborative control method and system for a multi-scale collaborative batching system. The method comprises the following steps: in the unloading process, real-time weight signals of each weighing sensor are acquired and real-time gravity center coordinates of the material are calculated; the gravity center moving speed is calculated; the weight change amount of the feeding end and the unloading end is acquired; when the gravity center speed continuously falls below the threshold and the weight change meets the abnormal condition, a material blocking pre-judgment signal is generated and all batching scales are stopped; after the automatic execution of the material blocking recovery operation and the determination of the troubleshooting, the scales are started in turn from long to short according to the remaining distance of the material front end of each scale from the unloading end to restore the collaborative unloading. The application accurately pre-warns in the early stage of material blocking and globally collaboratively stops through the double criteria of gravity center kinematics and regional weight difference, effectively guarantees the batching accuracy, and is especially suitable for high-reliability and high-precision industrial batching scenes.

The utility model belongs to the technical field of sports equipment, especially relate to a kind of outdoor adjustable resistance, theftproof power training counterweight mechanism.Application is used to outdoor power fitness equipment, and outdoor power fitness equipment includes main body frame and force arm, and force arm is rotatably connected to main body frame, and it includes: counterweight rotating frame, and counterweight rotating frame end rotatably connected to force arm.Sleeve adjusting assembly is slidably connected to counterweight rotating frame;Counterweight is connected with sleeve adjusting assembly.No need to adjust the quantity of counterweight, it is more convenient to adjust, easy to install, and simple to operate.Secondly, the gravity center of counterweight is stable, and counterweight rotating frame is rotated to realize light and safety during rotation.In addition, simple structure, easy to package and transport.Counterweight rotating frame, sleeve adjusting assembly and counterweight are suitable for installation on most outdoor power fitness equipment, and have strong versatility, which is conducive to cost reduction.

The utility model discloses a construction elevator with protection structure, including base and lifting platform, the left and right sides top edge of base all are set with rotary groove, and the front and back inner wall of rotary groove is fixedly connected with the rotary rod, and the rotary rod runs through the rotary holder and is fixedly connected with the rotary holder, and the top of rotary holder is set with lifting groove, and the inboard sliding connection of lifting groove has the lifting frame, the utility model discloses setting rotary holder at the both sides of base, and when rotary holder stands up, can be from two sides with lifting frame and the both sides of lifting platform and be pressed, thereby when the gravity center is caused to shift because personnel and goods move in the top, can form the support and protection effect, reduce the high altitude operation safety risk, improved security and stability.

The embodiment of the present application provides a sewage tank and a cleaning device, the sewage tank comprises a tank body and a solid-liquid separation piece, the tank body has an inlet channel, a negative pressure port, a first chamber and a second chamber, the inlet channel is used for conveying sewage to the first chamber under the action of a negative pressure source; the second chamber is communicated with the first chamber; the solid-liquid separation piece is installed in the first chamber, the solid-liquid separation piece is used for filtering solid sewage conveyed from the inlet channel into the first chamber, and liquid sewage is conveyed into the second chamber through a first communication channel. The sewage tank and the cleaning device provided by the embodiment of the present application, the ground brush is provided with the sewage tank, compared with the related art that the sewage tank is arranged on the machine body, the gravity center of the machine body can be reduced, and then the user can use conveniently. Then the loss of sewage and garbage in the transmission process can be reduced, the cleaning efficiency is improved, and it is ensured that the sewage on the surface to be cleaned can be rapidly and effectively collected.

The application provides a solar power generation device, which comprises a control box, a horizontal rotating mechanism located at the top of the control box, a pitching rotating mechanism located at the top of the horizontal rotating mechanism and a solar panel, wherein the solar panel is rotationally connected with the pitching rotating mechanism through a pitching connecting piece; the horizontal rotating mechanism is provided with a first limiting mechanism; and the pitching rotating mechanism is provided with a second limiting mechanism. Through the horizontal rotation and the pitching rotation, the solar panel can be kept at a high-efficiency power generation angle with the sunlight, and when encountering strong wind, the solar panel can be adjusted to a horizontal state to reduce the wind resistance; at night, the solar panel can be adjusted to a vertical state to make the dew, rain and snow fall; the setting of the pitching connecting piece lowers the gravity center of the solar panel and concentrates the gravity center in the box body, so that the whole device is relatively stable.

The utility model relates to flowerpot technical field discloses a kind of self-adapting stable flowerpot, including flowerpot main body, flowerpot surface is equipped with self-adapting stabilizing mechanism and automatic watering mechanism, self-adapting stabilizing mechanism contains bottom installation groove, high-precision three-axis gravity sensor is installed in groove, can real-time detect flowerpot inclination angle and gravity center deviation;The four corners of flowerpot bottom end are equipped with sliding rail, fixed plate, sliding seat on sliding rail is connected with electric control telescopic column by connecting seat, sliding seat top has counterweight, can be after sensor feedback, control end drive electric control telescopic column adjusts counterweight position, corrects inclination;Bottom end is also equipped with high elasticity silica gel shock pad with honeycomb air cavity and antiskid line, and the effect of shock absorption and antiskid is enhanced, automatic watering mechanism contains small water tank, there is water suction pump and spray head on pipe, liquid level sensor is installed on the surface of water tank, can automatically water and monitor water level, avoid water shortage or overflow, the present flowerpot does not need external fixation, adapts to multiple scenes, guarantees the safe growth of plant.

The present application relates to gas supply conveying device technical field, disclose a kind of transfer device of coated carbonization gas tank, including support base plate and gas tank body, the upper surface of the support base plate is fixedly connected with vertical partition, the upper surface of the support base plate is provided with the clamping mechanism of flexible clamping to gas tank body, the end of the gas tank body is equipped with closed detection mechanism in real time monitoring leakage during transportation, the rear end of the vertical partition is equipped with automatic locking mechanism with the linkage of pushing action, the clamping mechanism, closed detection mechanism and automatic locking mechanism are mechanically linked by same pushing action, to realize once operation synchronous completion gas tank hold, closed detection and walking lock, while using horizontal clamping mode to reduce gas tank transport gravity center, cooperate with multiple elastic buffer structure, can effectively avoid the scratch and pressure loss caused by shaking, dumping in transfer process to carbonization layer, greatly improve the stability of device operation.

The utility model discloses a drawer slide rail, including fixed rail and movable rail, fixed rail and movable rail movable cooperation is equipped with the ball assembly between fixed rail and movable rail, and is equipped with first accommodating site, second accommodating site, third accommodating site and fourth accommodating site between fixed rail with movable rail, and ball assembly is equipped with first ball, second ball, third ball and fourth ball, and first ball, second ball, third ball and fourth ball are located in first accommodating site, second accommodating site, third accommodating site and fourth accommodating site respectively. The utility model discloses the advantage of drawer slide rail: adopted cross -shaped cooperation and four -sided ball cooperation's structure, make fixed rail and movable rail between cooperation more stable and reliable, make movable rail's gravity center and fixed rail's support vertical board's center very close coincidence, therefore, in the use process, the operation of slide rail is more stable and smooth, and the slide rail is not easy to bend deformation, improves the bending capacity and the bearing capacity of slide rail.

The utility model provides a kind of construction progress monitoring device, including hard hat main part, four the monitoring seat of integral type is provided on the hard hat main part, and the socket of one of the monitoring seat is connected with shoulder strap power supply;The top of the hard hat main part is provided with wiring arc convex part, and wiring arc convex part is located between four the monitoring seat upper side;Hat brim is provided on the hard hat main part, and its inside buckle is equipped with hard hat inner support, and hard hat inner support is equipped with binding belt;The utility model is provided with inverted "L" type monitoring seat and camera around hard hat, covers 360 ° visual angle, avoids high-altitude falling object risk.Power supply box is connected with chest plate by shoulder strap and chest strap, disperses weight, reduces slip and oppression, and four-way distribution optimizes gravity center, forms double balance system.

The application discloses a battery pack for an electric vehicle and an electric vehicle comprising the same, which is installed on a body longitudinal beam of the electric vehicle, and is characterized in that the battery pack comprises: a box body, the box body comprises at least two box units, and a battery module for external charging and discharging is arranged in each box unit; and a horizontally arranged lock shaft, which is arranged above two adjacent box units and corresponds to the position of a locking mechanism on the body longitudinal beam. The battery pack for the electric vehicle can reduce the gravity center of the electric vehicle, improve the stability of the electric vehicle in driving, fully utilize the height space below the body longitudinal beam, and enable the battery replacement equipment to replace the battery from the bottom of the electric vehicle, so that the construction cost, time and difficulty of the battery replacement station are reduced, the requirement for the construction site is lowered, and the efficiency of the battery replacement is improved.

The utility model relates to the field of industrial dust removal equipment especially relates to a pulse cloth bag dust collector for lime storehouse. Pulse cloth bag dust collector for lime storehouse includes shell body, mobile seat, lifting assembly, mount, drive assembly and hatch, and the bottom of shell body is installed with ash bucket and is installed with dust remover body in the inside, and the bottom of ash bucket is installed with mobile seat, and lifting assembly is installed between mobile seat and shell body, and lifting assembly drives shell body to lift for lowering gravity center when moving. The utility model provides pulse cloth bag dust collector for lime storehouse through the design of drive assembly and hatch, so that when needing to maintain dust removal cloth bag, it is not necessary to enter the inside of equipment, and the design greatly reduces the maintenance operation difficulty, makes the replacement dust removal cloth bag maintenance work more convenient, effectively improves the maintenance efficiency, reduces the equipment downtime caused by maintenance, and guarantees the continuity of lime storehouse production.

The utility model belongs to switchgear finished product packing technical field, concretely is switchgear finished product packing is with antiskid buffer platform, including packing platform and the two expansion platforms of installation at packing platform both sides, two expansion platforms all are connected with packing platform through hinged rotation, the bottom of packing platform is provided with adjusting assembly, the both sides of adjusting assembly all are provided with the connecting assembly of being convenient for two expansion platforms support, the bottom fixed connection of packing platform has a plurality of support column, through the setting of adjusting assembly, through -opening, bracing piece, expansion platform and packing platform, the rotation of motor drive bidirectional screw rod under makes drive block move, and the bracing piece inside through -opening is removed to the expansion platform opening when supporting, thereby increasing the size of platform, avoid appearing the phenomenon that the larger switchgear finished product packing appears in midair, keep the stable gravity center, thereby improve switchgear finished product packing effect.

The application belongs to the technical field of electronic products, and discloses a wearable glue-filling electronic product with a double-battery structure, which comprises a watch body, the watch body comprises a middle frame, a rear cover is formed on the lower end opening of the middle frame through injection molding, a containing cavity for mounting a battery is formed in the middle frame, an electronic element mounting seat is arranged on one side of the containing cavity, and a first battery and a second battery for supplying power to the electronic product are arranged in the containing cavity; the first battery is arranged on the side of the containing cavity away from the electronic element mounting seat, the second battery is arranged on the side of the containing cavity close to the electronic element mounting seat, the first battery and the second battery are distributed in a transverse symmetry along the middle frame, and the weight of the first battery and the second battery is matched, so that the overall gravity center of the electronic product coincides with the geometric center of the middle frame; according to the scheme, the double batteries are arranged on the two sides of the containing cavity away from and close to the electronic element mounting seat, so that the overall gravity center of the machine coincides with the geometric center of the middle frame; and the application solves the battery mounting problem of the electronic watch.

The present application relates to a kind of multi-degree-of-freedom compound wave energy converter, belong to wave power generation technical field.The installation frame and power generation component, power generation component includes electromagnetic generator unit, nanometer friction power generation unit and piezoelectric power generation unit;Electromagnetic generator unit includes gravity pendulum and electromagnetic generator;Gravity pendulum is installed in installation frame around wave energy converter gravity center axis rotation, and one end is connected with the rotor of electromagnetic generator;Nanometer friction power generation unit includes several power generation components containing friction material, power generation component is installed in installation frame, and under the action of external force, relative motion occurs between power generation component, to generate electric energy;Piezoelectric power generation unit includes piezoelectric generator and water flow turbine;The rotor shaft of piezoelectric generator is connected with water flow turbine, and its rotor is made of piezoelectric material, and magnet is respectively arranged on rotor and stator.The present application can be fully and efficiently captured on multiple degrees of freedom to wave, energy conversion efficiency is high and the scope of application is wide.

The utility model relates to an unmanned intelligent racing car electric balance system and racing car, the utility model discloses control part is equipped with the first closed slide way of slide way direction and racing car head -tail midline perpendicular, and the inner chamber supplies pressure slider to slide, and the both ends of slide way are provided pressure -sensitive switch respectively, can output electric signal when being extruded by pressure slider. First drive module and second drive module produce magnetic attraction force with the electric signal of corresponding pressure -sensitive switch respectively to attract corresponding counterweight to move away from racing car midline one side, realize outside counterweight, when losing magnetic attraction, counterweight resets to the side close to midline. The utility model discloses simple structure, responds quickly, can realize the dynamic gravity center adjustment in the racing car running process, provides a kind of stable reliable, fast response and low cost intelligent racing car electric balance system.

The utility model relates to die stripping technical field, concretely is a kind of pouring prefabricated part die stripping auxiliary equipment for iron ditch, including mould body, the mould body is provided with mould cavity, the bottom of the mould body is provided with cavity, the side of the mould body is provided with motor. In the utility model, by the cooperation of motor and eccentric block, the eccentric block on the output shaft of both ends is driven to high-speed rotation after motor starts, since the gravity center of eccentric block is not in rotation center, periodic centrifugal force is generated when rotating, so that the whole mould body generates vibration, the vibration can be transmitted to mould cavity, the adhesion between pouring material and die inner wall is destroyed, let prefabricated part more easily separate from die inner wall, realize smooth stripping, simultaneously with the cooperation of electric push rod and top plate, the output end of electric push rod pushes top plate and moves upward and lifts prefabricated part after forming, it is convenient to eject sample from die, greatly improve the convenience of sample from mould cavity.

The utility model relates to exoskeleton technology, concretely is knee joint power-assisted walking device, including thigh part and shank, both are connected through knee joint, wherein the knee joint includes the hinge part I of setting in the lower extreme of thigh part, and the hinge part II of hinge connection with hinge part I, the drive module for driving knee joint is set in the upper end of thigh part, and drive module is driven the hinge part II deflection through the rope drive structure, power-assisted walking device is used for knee joint power assistance, and the hip joint needs the user to exert force alone, and the drive module for driving knee joint movement is not set in the knee joint, but moves to the upper part of thigh part, that is, the position close to the hip joint, and realizes the purpose of driving knee joint through the rope drive structure, this scheme can improve the gravity center of whole leg assembly, compared with the scheme that the existing drive module is set in the knee joint, when walking, the user, overcomes the leg assembly gravity work less, can effectively reduce the fatigue degree of hip joint.

The application discloses a kind of overall arrangement methods of off-grid hydrogen production platform suitable for large-scale deep far sea wind power, and relates to the technical field of off-grid hydrogen production platform, the present application adopts reasonable vertical arrangement method, it is favorable to reduce platform load gravity center, reduce platform vertical irregularity, adopt reasonable plane arrangement scheme, it is favorable to the operation and maintenance of equipment device, and also reduce the adverse effect of gravity load eccentricity on platform structure, ensure the structural rationality and safety of deep far sea off-grid hydrogen production platform.

The application provides a kind of unmanned plane with fast leveling function and corresponding unmanned plane leveling method, unmanned plane includes main body frame, battery, leveling frame and fixed frame.Leveling frame is movably connected to mounting surface and fixes battery.Fixed frame is detachably connected with leveling frame or with main body frame.One side of fixed frame is provided with convex leveling convex part, when connecting column of fixed frame is connected with connecting hole of main body frame, support center of leveling convex part is located on vertical line of geometric center of multiple rotors of unmanned plane.The application sets fixed frame with convex leveling convex part, when it is connected at bottom of unmanned plane, support center is aligned with geometric center of unmanned plane rotor, can assist user to quickly physically level overall gravity center of unmanned plane, reduce burden of flight control system, improve stability of flight control.At the same time, fixed frame can also cooperate with leveling frame to enhance fixation of battery, avoid battery loosening, and have double functions of fixation and leveling.

The application discloses a high-integration angle module for an agricultural vehicle and relates to the technical field of agricultural machinery equipment. The application comprises a framework body, a steering unit is installed at each corner of the framework body, a suspension unit is installed at the output end of the steering unit, a wheel hub motor driving unit is rotatably installed on the suspension unit, the steering unit drives the wheel hub motor driving unit to perform steering control by applying a rotating torque to the suspension unit, wherein the suspension unit comprises a supporting suspension fixed at the output end of the steering unit, and a trailing arm is hingedly connected to the bottom end of the supporting suspension. The application performs geometric optimization design on the suspension unit, the center of the wheel shaft is downwardly offset relative to the main axis of the trailing arm to form a gravity center sinking structure, the upper mounting point of an elastic return member is lowered to shorten the force arm, the vertical displacement amount of the center of the wheel hub motor driving unit is greater than the compression deformation amount of the elastic return member, and the ability of the vehicle to cross obstacles and the passability of the vehicle on complex terrains are significantly enhanced in limited installation space.

The utility model relates to electric power operation and maintenance technical field, and disclose a kind of electric power operation and maintenance wire deicing device, including device frame, the upper end of device frame is connected with movable frame, the side wall of movable frame is equipped with the deicing component for wire deicing, the upper surface of device frame is equipped with quick release component for quick release, one side of movable frame is equipped with the fixing component for the quick release component fixed;The deicing component includes drive motor, the drive motor is fixed in the side wall of movable frame by bolt, and the power output shaft of drive motor is fixed with fixed wheel.The utility model can roll and press the ice on the surface of wire by the deicing rack on the outer surface of fixed wheel and movable wheel, to realize the effect of deicing, the limiting plate set can play the role of limiting, the gravity center of the device can be guaranteed stable by the counterweight set, to reduce the condition of deviation.

The application discloses a solar cell panel support shaking early warning device, and relates to the technical field of solar panel supports, which comprises a base, a supporting cylinder fixedly connected to the upper surface of the base, a motor fixedly connected between the inner walls of the base, a storage rack slidingly connected between the inner walls of the supporting cylinder, a screw rod rotatably connected to the bottom of the inner walls of the supporting cylinder, the output end of the motor being fixedly connected to the bottom end of the screw rod, the screw rod being threadedly connected with the bottom end of the storage rack, and U-shaped pressing rods being slidingly connected to the outer surface of the supporting cylinder at equal intervals. The device can reduce the overall height of the device by sliding the storage rack into the supporting cylinder, thereby reducing the overall gravity center of the device, making the device easier to keep balanced, and reducing the area of the device subjected to wind, the force arm of the device, the torque of the wind force acting on the device, and the influence of the wind force on the device, so that the shaking amplitude of the device is reduced.

The application relates to the technical field of amphibious unmanned aerial vehicle platforms, and discloses an amphibious unmanned aerial vehicle platform with foldable arms, which comprises an unmanned aerial vehicle body, four groups of foldable arms are arranged on the side of the unmanned aerial vehicle body, a propeller unit is arranged on the side of the arm far away from the unmanned aerial vehicle body, the propeller unit provides lift for the takeoff of the unmanned aerial vehicle body, a support frame is connected to the bottom end of the unmanned aerial vehicle body, an integrated battery box is embedded in the support frame, and an adjusting assembly is arranged at the bottom end of the support frame. The amphibious unmanned aerial vehicle platform with foldable arms actively enhances the stability in the takeoff stage, the unmanned aerial vehicle autonomously adjusts the attitude and lowers the gravity center while generating the lift through the control strategy, and the support structure is expanded, so that the anti-disturbance ability in the instant of leaving the ground is directly strengthened from the physical principle, the unmanned aerial vehicle is significantly relieved of the weight, and the flight endurance, lift margin and maneuverability are directly improved.

The utility model relates to communication equipment installation technical field especially relates to a television antenna installation base, including base, antenna and suppression ring etc., the antenna is installed on the base, a plurality of first fixed screws are connected with the suppression ring bottom half, the suppression ring is fixedly connected with the bottom plate through first fixed screw, the base is rotatably connected with the suppression ring, the suppression ring top half is connected with second fixed screw, the suppression ring is fixedly connected with the cover plate through second fixed screw, the cover plate is limited with the base and cooperates, the suppression ring is hollow, be provided with the adjusting assembly for fixing the rotation angle of base on the suppression ring. Hollow cavity container formed through suppression ring, bottom plate and cover plate, fill the counterweight material in, realize overall structure gravity center reduction, place the base stably to strengthen the anti -wind force interference ability, reach the purpose that installs stably.

The utility model discloses a bearing accessory that keeps the internal gravity center of horizontal gun, including the cartridge holder pipe, the end portion of cartridge holder pipe is equipped with the deep groove ball bearing, the end portion of cartridge holder pipe still is equipped with the bearing baffle ring for shaft, the outer wall of deep groove ball bearing is equipped with the annular connecting seat, and the clearance between cartridge holder pipe and annular connecting seat is equipped with the shielding subassembly, and the annular connecting seat between two cartridge holder pipe end portions is connected through a plurality of connecting screws, and the shielding subassembly includes annular groove, fixed ring, annular shielding ring, elastic resistance piece, the utility model relates to horizontal gun technical field, through setting up the annular shielding ring of shielding subassembly and covering the clearance between cartridge holder pipe and annular connecting seat, and through the elastic resistance piece and the outer ring inner wall of annular groove are touched, realized completely to prevent the granular foreign matter such as oxide scale and rust on the inner wall and enters the bearing in the process of assembling, transportation, work, avoided the situation that causes bearing to jam, failure, cannot rotate freely in the pipe.