22 results about "Gravity line" patented technology

A stroller with a chassis frame which is supportable on a ground via at least three wheels and havingat least two receiving devices, in particular child receiving devices, which can be connected to the chassis frame via adapters, the adapters being designed and positionable on the chassis frame such that, with regard to a connection of the receiving devices as well as their alignment and, if appropriate, their manipulation, they do not allow at least one configuration in which the overall center of gravity of the transport device and receiving devices in top view and thus the overall center of gravity line does not lie within the projection area bounded by the wheels or their standing surfaces, and only permit such that the overall center of gravity of the transport device and receiving devices in top view and thus the overall center of gravity line always lies within the projection area bounded by the wheels or their standing surfaces.

The embodiment of the invention provides a sample testing method, device and equipment and a medium, which are used for solving the problem that the consistency of drop tests of samples with unified specifications cannot be ensured in the related technology. The electronic equipment determines target position information of a central point of the top surface of the sample, sends the target position information to the grabbing equipment, so that the grabbing equipment adsorbs the sample based on the target position information, determines gravity center position information of the sample according to a torque value acquired by the torque sensor, determines a target edge corresponding to the test task, and sends the target edge to the test equipment; determining a target rotation angle based on the gravity center position information and the target edge; the grabbing equipment rotates by the target rotation angle based on the target edge, so that the gravity line of the sample can pass through the gravity center and the target edge, the sample is subjected to a drop test, a user does not need to place the sample in the process, target position information and the target rotation angle can be determined, the consistency of drop tests of samples of unified specifications can be ensured, and the test efficiency is improved. And the accuracy of sample testing is improved.

The utility model discloses a kind of multi-lifting lug beam suitable for condenser installation construction, including hoisting beam main body, at least two pairs of lifting lug components are fixedly arranged on the hoisting beam main body, each pair of lifting lug components includes two lifting lugs, two lifting lugs are symmetrically arranged relative to the gravity line of hoisting beam main body, lifting lug is provided with a through-hole, multiple lifting lugs are sequentially arranged, the through-hole is arranged in front-back direction, front and rear side surface is fixedly arranged with hanging cable column, the hoisted object is connected with hanging cable column by sling, according to the gravity distribution of the hoisted object, different lifting lug combination is selected and crane hook is connected with soft connection hoisting, to ensure that the hoisted object is horizontal, to adapt to the requirement of condenser installation construction.

The present invention relates to a barrel-type bearing which uses water lubrication, which supports a propulsion shaft of a marine vessel, and in which a plurality of arc pieces are held and retained at the inner circumferential surface of the bearing. A bearing according to the present invention has, at the inner circumferential surface of a cylindrical shell that supports a propulsion shaft of a marine vessel, a pair of positioning plates which are fixed opposite each other on the horizontal axis of the shell, a key member which is fixed to the bottom point Pb part of the shell, a bottom arc piece which engages with the key member, arc pieces which are provided to an upper part of the positioning plates, and arc pieces which are provided to a lower part. The horizontal axis is orthogonal to the center-of-gravity line of the propulsion shaft in a transverse section of the shell. This bearing makes it possible to easily hold and retain arc pieces at the inner circumferential surface of the bearing, and makes it possible to transfer arc pieces that are worn and arc pieces that are not worn to easily restore the bearing.

The present invention relates to a barrel-type bearing which uses water lubrication, which supports a propulsion shaft of a marine vessel, and in which a plurality of arc pieces are held and retained at the inner circumferential surface of the bearing. A bearing according to the present invention has, at the inner circumferential surface of a cylindrical shell that supports a propulsion shaft of a marine vessel, a pair of positioning plates which are fixed opposite each other on the horizontal axis of the shell of the shell, a key member which is fixed to the bottom point Pb part of the shell, a bottom arc piece which engages with the key member, arc pieces which are provided to an upper part of the positioning plates, and arc pieces which are provided to a lower part. the horizontal axis is orthogonal to the center-of-gravity line of the propulsion shaft in the transverse section of the shell. this bearing makes it possible to easily hold and retain arc pieces at the inner not worn to easily restore the bearing.

The present application provides an eccentric hoisting method, an eccentric hoisting device and an eccentric hoisting system. The eccentric hoisting method comprises the following steps: a determination step: determining that the number of lifting lugs is three; a setting and measuring step: setting the first hook and the second hook on one side of the steel structure member, and the third hook on the other side of the steel structure member; measuring the distance from the first hook to the center line of the crane as l4, measuring the distance from the second hook to the center line of the crane as l3, and l4 = l3; measuring the distance from the center of gravity line of the steel structure member to the first hook in the first direction as L4, and measuring the distance from the center of gravity line of the steel structure member to the second hook in the first direction as L3; a judgment step: if L4 > l4 or L3 > l3; a calculation step: calculating the force on the first hook, the force on the second hook and the force on the third hook. The present application can achieve the smooth hoisting of the steel structure member when there is a certain deviation between the center line of the crane and the center of gravity line of the steel structure member.

Disclosed in the present invention is an aid-to-navigation lighting bridge in a mountainous area and near water, comprising a beam body, a plurality of piers, and a lighting set. The beam body is of a transversely-arranged continuous and smooth truss structure; the lighting set is composed of a plurality of light-emitting mechanisms independent from each other; the lighting set is arranged on the upper surface of the beam body; the piers are of a vertical structure; the center lines of the piers coincide with the gravity line; the top ends of the piers are connected to the lower surface of the beam body; and the beam body is communicated with the top ends of the piers. According to the present invention, a sea level cambered surface is used as a basic reference surface, and on the basis of such a level, the beam body is of a linear connection structure having continuous discrete feature points, so that the beam body is subjected to reasonable structural transformation according to topographic characteristics, thereby satisfying the obstacle avoidance requirement to the greatest extent while ensuring that stress satisfies the requirement.

A radar level gauge relates to the field of level measurement technology. A level transmitter is fixedly connected to the upper part of a mounting base. An upper suspension shaft suspends an upper ring at the lower part of the mounting base, and a lower suspension ring suspends a lower suspension shaft. Two lower ear plates are fixedly connected to the lower suspension shaft, and a counterweight sleeve is fixedly connected to the lower ear plates. The upper and lower semi-circular holes intersect perpendicularly in the horizontal direction. A guided wave radar level sensor is fixedly connected to the center of the counterweight sleeve. The beneficial effects of this invention are: the vertically arranged upper and lower semi-circular rings allow the guided wave radar level sensor to swing in any direction within the horizontal range, remaining perpendicular to the liquid surface under gravity. The magnetic levitation suspension method eliminates friction between the guided wave radar level sensor and the counterweight sleeve during suspension, preventing deviation from the gravity line and improving measurement accuracy.

A water tank and a cleaning robot, relating to the technical field of cleaning devices. The water tank is provided in a water tank accommodating groove (41) of a robot body (4); the water tank comprises a first tank body (1) and a second tank body (2) located in the first tank body (1); and the center of gravity line of the first tank body (1) is collinear with the center of gravity line of the second tank body (2). The change of the center of gravity of the water tank in the working process can be effectively reduced, thereby ensuring the stability of the cleaning robot during movement.

In recent years, it has become increasingly important in the development of braiding tools to reduce friction and wear. The braiding tool (1) according to the invention and the braiding device (27) according to the invention are therefore suitable for reducing the friction and the accumulation of dirt (23) in the braiding machine compared to conventional braiding tools. To this end, the braiding tool (1) has a section (7) in the functional region (5), in which section the value of the slope of the center of gravity line (4) is greater than zero.

In recent years, development in the field of knitting tools has seen a focus on the reduction of friction and wear. A knitting tool (1) and a knitting device (27) as described herein are better able to reduce friction in knitting machines and the accumulation of dirt (23) than conventional knitting tools. For this purpose, a functional portion (5) of the knitting tool (1) has subsections (7) in which the absolute value of the gradient of a center-of-gravity line (4) is greater than zero.

The present application relates to a bonding method for bonding a first target part and a second target part. The bonding method includes obtaining the center of gravity line of the first target part and the alignment line of the second target part. The second target part is provided with a plurality of alignment holes that pass through the first surface and the second surface along the first direction, and each alignment hole has a first opening located on the first surface and a second opening located on the second surface, and the alignment line is determined based on the centers of all the second openings. The first target part is controlled to move to be bonded to the first surface based on the target position. The orthographic projection of the second opening on the reference surface is located within the orthographic projection of the first opening on the reference surface. The present application provides a plurality of alignment holes on the second target part to determine the alignment line of the second target part, thereby improving the bonding accuracy when bonding the first target part to the second target part, thereby alleviating the poor vibration caused by poor precision when the first target part drives the second target part to vibrate.

The utility model relates to a safe storage cabin for chemicals. The safe storage cabin comprises a box body, a support A with the hinged axis extending transversely is hinged into the box body, a support B with the hinged axis extending longitudinally is hinged to the support A, a cabinet body used for storing chemical containers is fixedly connected to the bottom of the support B, the gravity center line of the cabinet body intersects with the hinged axis of the support A and the hinged axis of the support B, and the cabinet body is located in the box body. The cabinet body for storing chemicals is hinged to the box body through the support A and the support B, when the box body vibrates due to collision, the cabinet body provides opposite pulling force for the box body under the action of inertia, and therefore vibration of the box body and the cabinet body is reduced, and the chemical storage box is simple, efficient, safe and reliable.

The invention relates to the technical field of electric power maintenance equipment, in particular to a climbing and pole-climbing operation platform tool and a using method. The climbing and pole-climbing operation platform tool comprises a hoop mechanism used for surrounding and tightly holding an operation pole body; the platform assembly is arranged on one side of the hooping mechanism, the bearing center of the platform assembly is located on the outer side of a theoretical central axis formed by the hooping mechanism in a surrounding mode, when an operator stands on the platform assembly, the gravity action line of the operator deviates from the theoretical central axis, and therefore a torsional moment is generated on the hooping mechanism; and the inner surface of the hoop mechanism and the outer surface of the working rod body are forced to be mutually pressed on at least two separated contact areas. According to the invention, the stable platform based on the eccentric gravity self-locking principle is introduced, so that operators can concentrate all physical power on maintenance operation instead of consuming the physical power to maintain balance, the high-altitude operation mode is converted from continuous physical power consumption to stable static operation, and the operation efficiency is improved.

The embodiment of the application discloses a kind of ball antenna stabilizing mechanism based on gravity self-adaption, comprising: single-axis holder is located inside the frame structure of suspension steel frame;Single-axis holder bottom end is fixedly connected with internal hanger, and internal hanger is connected with 5G antenna by universal joint and connecting steel frame, and single-axis holder top end rotationally connected holder mounting seat is carried on the top of suspension steel frame, so that single-axis holder drives internal hanger, universal joint, connecting steel frame and 5G antenna to carry out horizontal rotation movement;Damping rod is installed between internal hanger and 5G antenna, for when 5G antenna is shaken in pitch direction, so that 5G antenna returns to gravity line reference;Electric push rod is installed between connecting steel frame and 5G antenna, for pre-adjusting the suspension angle of 5G antenna.The technical scheme provided by the embodiment of the application solves the problem that if the existing 5G base station antenna stabilizing mechanism is applied to the tethered balloon, it is difficult to meet the use requirements of the tethered balloon on the antenna horizontal rotation, pitch and frequent shaking.

The utility model relates to an improvement of a traditional inclinometer calibration table, in particular to an inclinometer calibration table device, which is characterized in that observation holes are symmetrically arranged on a stand column of an inclinometer calibration table, liquid bottles are arranged in the observation holes, a horizontal line is arranged in the middle of each liquid bottle, and anti-freezing colored liquid is arranged in each liquid bottle. A universal wheel and a leg capable of being adjusted up and down are arranged at the outer end of a fixing frame at the bottom of the inclinometer calibration table, the height from the universal wheel to the ground is fixed, and the minimum value of leg adjustment is smaller than the height from the universal wheel to the ground. The maximum value of adjustment of the legs is larger than the height of the universal wheels relative to the ground, the inclinometer calibration table can be moved and fixed by adjusting the vertical height of the legs, and the perpendicularity of the working face of the inclinometer calibration table and the earth gravity line can also be adjusted.

The present invention discloses a bulletproof window system, which relates to the technical field of building doors and windows, and comprises a window frame and a window sash, wherein the window frame and the window sash are rotatably connected via an axial rotation mechanism, wherein the axial rotation mechanism comprises: a suspension component, comprising an installation cavity opened at a position above a frame opening of the window frame, wherein a hanging beam unit is arranged in the installation cavity; and an axial rotation component, comprising a rotating tube rotatably installed at the bottom of the installation cavity, wherein a first connecting column fixed to the window sash is movably inserted in the rotating tube, wherein the connecting column and the hanging beam unit are connected via a connecting rope, and a second connecting column rotatably installed to the window frame is fixed at the bottom of the window sash. The present invention rotatably installs the window sash on the window frame via the axial rotation mechanism, and under the suspension action of the connecting rope, the center of gravity of the window sash when opened and closed is located on the frame opening surface of the window frame, and no additional power-assisting parts are required, thereby saving manpower and making the entire bulletproof window system appear simpler in appearance.

In recent years, development in the field of knitting tools has seen a focus on the reduction of friction and wear. A knitting tool (1) and a knitting device (27) as described herein are better able to reduce friction in knitting machines and the accumulation of dirt (23) than conventional knitting tools. For this purpose, a functional portion (5) of the knitting tool (1) has subsections (7) in which the absolute value of the gradient of a center-of-gravity line (4) is greater than zero.

A bend pipe and a fluid machine comprising: an inlet pipe part that has a linear shape; a bend pipe part that has a curved shape and is connected to the downstream end of the inlet pipe part; and an outlet pipe part that has a linear shape and is connected to the downstream end of the bend pipe part, wherein the bend pipe part has a first center-of-gravity line which is curved inward in the bending direction, a second center-of-gravity line curved outward in the bending direction, and an inflection point provided at an intersection of the first center-of-gravity line and the second center-of-gravity line.

The invention discloses a motor assembly gravity center measuring tool and a method for predicting a lifting hook and measuring and calculating the gravity center position, aims to solve the technical problem that the lifting hook position and the gravity center of a combination need to be predicted depending on experience of an operator in the prior art, and belongs to the technical field of gravity center measuring tools. The device comprises a main measuring ruler, a gravity line simulation ruler a and a gravity line simulation ruler b, the gravity line simulation ruler a and the gravity line simulation ruler b can stretch out and draw back, one end of the gravity line simulation ruler a is rotationally connected with a sliding block a, and one end of the gravity line simulation ruler b is rotationally connected with a sliding block b. The other end of the gravity line simulation ruler a is rotatably connected with the other end of the gravity line simulation ruler b, and the sliding block a and the sliding block b can slide on the main measuring ruler.

The utility model relates to the technical field of plumb bob tools, in particular to a device for improving under-point centering precision, which comprises a plumb bob main body, a thread mounting groove is formed in the bottom end of the plumb bob main body; a vertical tip seat is mounted in the threaded mounting groove in a threaded manner; a ball groove is formed in the bottom of the vertical tip seat; a ball head vertical tip is arranged in the ball groove; the top of the ball head vertical tip is a ball head, the bottom of the ball head vertical tip is a vertical tip, and the ball head of the ball head vertical tip can like the ball groove to rotate, so that the tip end of the bottom of the ball head vertical tip always faces the direction of the earth gravity line; after the plumb bob main body deflects due to the change of the gravity center line caused by corrosion and damage, the ball head plumb tip can be freely rotated and adjusted, so that the bottom tip end of the ball head plumb tip still faces the direction of the earth gravity line, the centering accuracy is improved, and the measurement precision is further improved.

The application discloses a path planning method for unmanned ship cluster to traverse multiple target points based on RRT, and belongs to the field of lake path planning; aiming at the path planning requirement of unmanned ship cluster to multiple target points, complex obstacles are converted into equivalent elliptical obstacles, the existing RRT algorithm is improved, and child nodes are generated based on multiple nodes until all target points are traversed, so that the RRT algorithm can plan multiple target points of multiple ships. The gravity lines are generated by connecting the paths between the starting points and the target points in sequence, the gravity lines are used to exert gravity on the path nodes, and the obstacles are used to exert repulsion on the path nodes, and the position of the sampling path node is adjusted by using the repulsion and the gravity, so that the length of the planned path is shortened, and the path is smoother. Finally, the international maritime rules are introduced to constrain the obstacle avoidance action of the RRT algorithm, the rationality of obstacle avoidance of the RRT algorithm is improved, the length of the planned path is shortened, and the time cost of the planned path is reduced.