383 results about "Arc length" patented technology

The invention relates to the technical field of motion planning, and discloses an Airthoid curve corner fairing method based on strain energy optimization, which is used for fairing a corner formed by straight line segments in a tool path and taking a fairing curve as an actual machining path of a tool. Comprising the following steps: obtaining an approximate error constraint and a segment length constraint according to a given corner size, a corner edge length and an approximate error; determining a feasible region of a transition length and a deflection angle according to the approximate error constraint and the segment length constraint; selecting a parameter combination enabling the strain energy of the fairing curve to be minimum in the feasible region according to the strain energy of the fairing curve; calculating arc length and curvature extreme values of three pairs of Airthoid curves forming a fairing curve according to the parameter combination; the generated tool path has the advantages of being based on arc length parameter expression, controllable in contour error, and capable of achieving curvature extreme value and arc length analysis expression.

The invention discloses a curve determination method for a centrifugal pump point-by-point integration method, and belongs to the technical field of centrifugal pumps. The curve determination method of the centrifugal pump point-by-point integration method is a parameterized modeling method based on an Euler equation and momentum conservation, the inlet and outlet boundaries of a vur curve are calculated according to design requirements, after a smooth transition curve is constructed in combination with runner geometry and attack angle constraint, the curve is constructed through nonlinear interpolation according to the dynamic correlation streamline arc length, and the curve is determined. The relation between the streamline arc length and the curve is established; according to the method, when the centrifugal pump blade molded line is designed, the curve can be quickly obtained through a parameterization method according to the given design condition and the streamline arc length s.

The invention discloses a five-axis machining tool path planning method for a complex curved surface, and relates to the technical field of numerical control machining. Subregions are divided based on the Gaussian curvature of a curved surface model, and a region equation is fitted; projecting the sub-regions and screening to obtain a boundary point set, fitting a curved surface equation by adopting cubic NURBS, and performing normal vector and curvature constraint optimization to splice an optimal curved surface equation; setting a section plane, calculating a section curve, calculating an arc length based on a Simpson formula, and planning a track point coordinate sequence according to the curvature; constructing a spiral equation of adjacent section planes, calculating a spiral step length based on a Simpson formula according to a position and tangent continuous constraint solving coefficient, and generating a cross-plane track point sequence; in the section plane, based on lossless and cutting direction constraints, an optimal angle sequence is obtained through optimization of a genetic algorithm, and a cross-plane angle sequence is obtained through cosine interpolation; and a machining pose sequence is generated through integration, and high-precision machining of the complex curved surface is achieved.

The invention relates to the technical field of motion planning, and particularly discloses a linear path fairing method based on Airthoid and an arc, and the method specifically comprises the steps: 1, determining a curvature radius extreme value of a fairing curve and a solution set of a first tangent angle according to approximate error constraint and non-selfing constraint; step 2, calculating a solution set of parameter combinations meeting tangential continuity, curvature continuity and position continuity constraints; step 3, calculating an intersection of the solution set 1 and the solution set 2 to obtain a solution set 3; judging whether the solution set 3 is null or not, if so, running the step 5; if not, the fourth step is executed; 4, calculating an optimal parameter combination in the solution set 3, and then running the step 6; 5, generating a fairing curve parameter combination not containing an arc according to the non-selfing constraint, and then running the step 6; and 6, analyzing and calculating the curvature extreme value and the arc length of the fairing curve. The method has the advantages of being based on arc length parameter expression, controllable in contour error, and capable of achieving curvature extreme value and arc length analysis expression.

The invention relates to a wall-climbing laser cleaning robot weld joint identification tracking control method and device, and belongs to the technical field of robot tracking control. The maximum curvature of the arc length between the position point of the robot at the current moment and a preview point is determined, the maximum longitudinal speed corresponding to the maximum curvature is determined, and the preview point is any point on the weld joint track in the advancing direction of the robot; and determining a predicted position of the robot at the next moment according to the maximum curvature and the maximum longitudinal speed, and controlling the robot to move to the predicted position. The method solves the problem that the precision of a dynamical model and an operation control strategy of the wall-climbing robot is low because the wall surface motion control of the wall-climbing robot does not consider the influence of adsorption force and gravity.

Provided is a submerged arc welding method including: receiving setting of a gain indicating responsiveness of a variation in a feeding speed of a welding wire with respect to a variation in an arc length; detecting a welding voltage corresponding to the arc length; controlling the arc length by changing the feeding speed of the welding wire on the basis of the detected voltage, and controlling the arc length by changing the feeding speed of the welding wire on the basis of the detected voltage, a predetermined voltage corresponding to a predetermined arc length, and the received gain.

The invention belongs to the technical field of deep rock mass drilling coring, discloses a deep rock mass drilling large-curvature trajectory control method and device and a storage medium, and solves the problems that in the prior art, a generated drilling curve is not high in precision, and accurate drilling trajectory control cannot be carried out. According to the method, a drilling curve is described through a segmented Bezier curve, data such as path length, angle and depth in the actual drilling process are obtained, the error between the actual length of a minimum drilling path and the arc length of the corresponding Bezier curve is used as a target, iterative calculation is conducted on relative coordinates of a drill bit through an optimization algorithm, and the optimal drilling path is obtained. Therefore, the control points on the Bezier curve are accurately corrected, so that the Bezier curve infinitely approaches the real drilling track, the precision of the generated drilling curve is finally improved, the drilling direction of the drill bit is optimized and adjusted according to the drilling curve generated in real time, and the drilling track is controlled.

The invention provides a mountain slope transmission system catenary determining method and device, and the method comprises the steps: obtaining the arrangement parameters of a transmission system on a mountain slope, and the arrangement parameters at least comprise the horizontal distance between two fixed points of the transmission system, the vertical height difference, and the total length of a rope of the transmission system; based on the arrangement parameters, a simultaneous equation with the catenary opening coefficient as a core unknown quantity is established, and the simultaneous equation comprises the arc length constraint of the catenary and the height difference constraint of the two end points at the same time; solving the simultaneous equation to obtain a numerical solution of the catenary opening coefficient; and determining a catenary shape and a core engineering index of the transmission system on the mountain slope under the action of gravity according to the solved catenary opening coefficient. According to the method and the device, the engineering design precision is improved, and material redundancy and adjustment cost caused by shape uncertainty are saved.

The invention relates to the technical field of speed reducers, and particularly discloses a harmonic speed reducer rigid gear tooth profile design method which comprises the following steps: giving a polar coordinate expression of a flexible gear neutral layer curve: r = p / cos (mu); assuming that the rotation angle of the undeformed end of the flexible gear is # imgabs0 # in unit time, according to the assumption that a neutral layer curve is not elongated before and after deformation of the flexible gear, the arc length of the deformed end of the flexible gear is equal to the arc length of the undeformed end of the flexible gear, and according to the Cauchy formula of the convex set perimeter, # imgabs1 # Zc is the tooth number of the rigid gear, and Zf is the tooth number of the flexible gear; a parameter equation of the tooth profile of the rigid gear can be obtained according to the envelope theory, the tooth profile of one tooth in the rigid gear is obtained, and then the whole tooth profile of the rigid gear is obtained through the array. When the rigid gear calculated through the method is used in the three-wave speed reducer, the transmission ratio is smaller than 10, and the meshing area of the rigid gear and the flexible gear exceeds 40%.

The invention belongs to the technical field of flexible structure design, and particularly relates to a variable-arc-length arched beam structure which comprises a sliding groove section, a sliding key section, a corrugated beam, a variable-height supporting column and a variable-length supporting rod. The corrugated beams are arranged on the outer sides of the sliding key sections and the sliding groove sections and are provided with wave crest and wave trough structures; the sliding key sections and the sliding groove sections are located on the inner sides of the corrugated beams, arranged at intervals and distributed in a staggered mode. The corrugated beams, the sliding key sections and the sliding groove sections are all of arc-shaped structures, and wave crests and wave troughs of the corrugated beams are arranged in the radial direction of the arc-shaped structures; when the shape and the arc length of the arched beam are changed, the variable-height supporting columns and the variable-length supporting rods can automatically generate height changes, then the sliding key sections and the sliding groove sections are driven to relatively slide, and meanwhile the corrugated beams evenly distribute the arc length changes to the positions between the adjacent wave crests, so that external loads are evenly distributed to the arched beam. Therefore, the size of the fuselage is correspondingly reduced along with fuel consumption.

The invention provides a large-span beam formwork three-dimensional parameterization deepening design method, and belongs to the technical field of building construction.The method includes the steps that geometric parameters of a large-span beam three-dimensional parameterization model are obtained, and a multi-scale homogenization mechanical analysis model is established to describe nonlinear characteristics of a concrete material; an arc length control method is combined with a Newton-Raphson iterative improved algorithm to carry out large-deformation nonlinear analysis to calculate deformation control parameters, safety performance is evaluated, support structure parameters are adjusted, and a double-layer game optimization model is established to determine optimal template support system parameters. On the basis of a bending-torsion coupling analysis result, a force transmission path diagram is established through a load transmission path generation function, and an optimal force transmission path is determined by adopting a gradient optimization algorithm, so that the problems that the design of a large-span beam formwork supporting system lacks an accurate mechanical calculation basis, and structural deformation and stress distribution cannot be accurately predicted are solved; and the design of the supporting system is not reasonable.

The present invention belongs to the technical field of electrochemical machining, and particularly relates to a design method for the cathode profile of an all-metal oil screw drill stator by electrochemical machining. The contour curve of the cathode profile is designed into a dot matrix according to unequal gaps, so as to obtain the control points, order and knot vector of the contour curve, construct operators, and use integral spline operators to control the global shape of the contour curve to achieve rough fitting of the cathode contour; when the square curvature of the cathode contour curve is the smallest relative to the integral of its arc length, the curvature of the curve is the most uniform. A fitting index for the cathode contour curve is constructed, and the discrete curvature at each point of the cathode contour curve is calculated in turn to achieve precise fitting of the cathode contour curve, and the error can be controlled within the accuracy range of 0.002 mm; the "B-τ" spline inner contour integration method is used to design the cathode profile of the all-metal oil screw drill stator. The present invention has the advantages of short cathode design cycle, high forming accuracy, and significantly reduced cathode manufacturing cost.

The invention relates to the technical field of automatic welding, in particular to a high-strength austenitic stainless steel welding process characteristic curve making method which comprises the following specific steps: S1, selecting a welding process characteristic curve according to parameters corresponding to a common stainless steel weldment; s2, re-calibrating peak energy; s3, reformulating a pulse waveform; and S4, based on an arc length prediction formula of the pulse parameters and the wire feeding speed, calculating to obtain a base value current and a pulse frequency. According to the method, the pulse welding waveform is adjusted and optimized, the single pulse energy distribution in the welding process is modified, the pulse waveform special for the high-strength austenitic welding wire is formed, the special welding process characteristic curve customized for the high-strength austenitic stainless steel welding material is invented, and then the welding manufacturability and the molten pool spreadability of the high-strength austenitic stainless steel are optimized.

The utility model discloses a tool for measuring a circumferential curve. The tool comprises a first vertical scale, a second vertical scale, a third vertical scale, a transverse scale, a first driving rod and a second driving rod, strip-shaped through holes are respectively formed in the middle parts of the first vertical scale, the second vertical scale and the third vertical scale along the axial direction; the first vertical scale is vertically installed at the front end of the transverse scale through a limiting block, the right side edge of the first vertical scale is flush with the zero scale of the transverse scale, and the second vertical scale and the third vertical scale are sequentially and vertically installed on the transverse scale from front to back through a first sliding limiting block and a second sliding limiting block. The first sliding limiting block and the second sliding limiting block can move left and right in the length direction of the transverse ruler. The device can quickly and accurately measure the chord height and chord length of a circumferential curve, further can quickly calculate the arc length, the curve radius and the curve corresponding angle of the circumferential curve, reflects specific parameters of a sphere or a plane circle in detail, and provides a basis for calculating the characteristics of a circumferential curved surface.

The utility model discloses a movable tubular pile gas shielded welding windshield which comprises a radius adjusting cover and a perimeter adjusting block, the radius adjusting cover is of an arc-shaped structure, the inner ring of the radius adjusting cover is attached and adsorbed to the circumferential outer wall of a tubular pile, and the outer ring of the radius adjusting cover is symmetrical and is connected with a welding gun rod in an elastic tensioning mode. Perimeter adjusting blocks are telescopically inserted into two circumferential end surfaces of the arc-shaped structure of the radius adjusting cover. The windproof cover is used for covering and protecting the flame of the welding gun, can adaptively adjust the local covering radius and arc length according to the diameter of a pipe pile, can move along with the movement of the welding gun, and is simple in structure and easy to implement.

The invention provides a railway carriage elastic bearing body detection tool, and belongs to the technical field of bearing body detection tools. Comprising a clamping mechanism, a supporting frame body is installed on the top of the clamping mechanism, a first frame body is arranged on one side of the clamping mechanism, a second frame body is arranged at the bottom of the clamping mechanism, side bearing boxes are installed on the two sides of the top of the first frame body, and side bearing bodies are installed on the tops of the side bearing boxes; and the first outer contour measuring mechanism is used for measuring the length and the width of the side bearing box. Through the arrangement of the first outer contour measuring mechanism and the second outer contour measuring mechanism, the length and width of the outer contour of the side bearing box and the arc length and curvature of the corners of the outer contour can be rapidly measured by using the first outer contour measuring mechanism; and the length and the width of the outer contour of the side bearing body and the arc length and the curvature at the corners of the side bearing body are rapidly measured by using the second outer contour measuring mechanism.

The invention relates to a variable-width volute spiral spring design method and a volute spiral spring, and belongs to the technical field of volute spiral springs.The variable-width volute spiral spring design method comprises the steps that S1, polar angles corresponding to plane spiral lines at different arc length positions are determined; s2, determining curvature radiuses corresponding to the planar spiral lines at different polar angle positions; s3, according to different curvature radius parts, the initial section width of the volute spiral spring is designed; and S4, the initial width of the volute spiral spring is adjusted according to the ratio of the radius to the half thickness of different parts, and uniform distribution of bending stress is achieved. The core of the method is that a corresponding width change rule is designed according to a change rule of bending stress along with curvature radius disclosed by a curved beam theory. By means of the method, the maximum bending stress of all the sections can be equal, and therefore the bearing capacity and stability of the volute spiral spring are improved.

The invention relates to the technical field of tire manufacturing, and discloses a low-rolling-resistance truck radial tire which comprises a tread, a sidewall, a belted layer, a tire body, a steel wire ring and steel wire wrapping cloth, the outer contour of the tread is of an arc-shaped structure on a tire interface, the arc length of the tread is L, the arc length L adopts the design of two sections of tangent arcs, and the arc length L is larger than the arc length L; the tread is provided with three pattern grooves which divide the tread into four same pattern blocks, the three pattern grooves are composed of two conventional open type longitudinal grooves and a Y-shaped longitudinal groove in the longitudinal direction, and the Y-shaped longitudinal groove is located between the two open type longitudinal grooves. According to the truck radial tire with the low rolling resistance, by optimizing the structural design, the pattern design and the formula design of the tire, the tire has the ultra-low rolling resistance performance, and meanwhile eccentric wear and different wear can be effectively reduced.

The invention discloses a return stroke section optimization method based on three-dimensional free bending forming, which comprises the following steps: S1, obtaining an eccentric distance U of a bending die at a transition section of a pipe according to a U-R relation, and obtaining a relation function of a variable motion speed delta of the bending die and the U; s2, the axial movement speed of the bending die corresponding to each time node is calculated, meanwhile, a correction coefficient e is introduced, and finite element simulation is conducted; and S3, comparing the simulation result with the target bending member, and if the error is not in the allowable range, changing the correction parameter e to continue simulation until the error reaches the allowable range. The invention further discloses a return stroke section optimization device based on three-dimensional free bending forming. The arc length of the return stroke section is reduced, the quality and precision of a formed part are improved, and more complex pipe fittings can be machined and formed.

The invention discloses a ship navigational speed segmented measurement method suitable for an arc-shaped navigable tunnel test, and relates to the technical field of engineering measurement, and the method comprises the following steps: dividing a navigable arc-shaped segment of a tunnel into a plurality of uniform measurement segments, and erecting a laser range finder at the front end of each measurement segment; presetting an acquisition sequence, and sequentially acquiring distance data measured by the laser range finder when the test ship sails based on the preset acquisition sequence; based on the distance data measured by the laser range finder, the arc length of the test ship passing along the channel center line at any time position point is obtained; and obtaining the ship navigational speed based on the ratio of the arc length to the test ship navigational time. Through segmented measurement, real-time data acquisition and navigational speed calculation based on the arc length, the ship navigational speed measurement method with high adaptability, high precision and high real-time performance is provided for an arc-shaped navigational tunnel test, the defects in arc-shaped navigation channel measurement in the prior art are overcome, and the method has remarkable practical application value.

The invention relates to a torsion angle description and analysis method of a sectional material bending and torsion component, and relates to the field of advanced manufacturing of complex sectional material bending components. The method comprises the following steps: respectively extracting NURBS parameters on edges and a center line of a section bending and twisting component, carrying out parameterized point distribution according to an arc length to obtain curvatures and coordinates of all points on a curve, and finally calculating section torsion angles at different positions on the center line by constructing a torsion vector and a projection plane and combining matrix transformation. Under the condition, a torsion angle parameter analysis method is provided for manufacturing the section bending and twisting component through the six-axis free bending and twisting technology, the torsion angle change of the section bending and twisting component along all the sections of the axis can be accurately described, and the manufacturing precision of the six-axis free bending and twisting technology is further improved; in addition, the method is simple, feasible and high in analysis efficiency, and has important engineering application value and obvious economic benefits in the fields of aerospace and new energy automobiles.

The utility model provides an adjustable supporting device for culvert construction, and solves the problems that the existing supporting device is usually supported by steel pipes, culverts are different in shape and size and generally comprise pipe-shaped culverts, box-shaped culverts and arch-shaped culverts, the arch-shaped culverts have different arc lengths, the supporting device is inconvenient to adjust according to the culverts of different structures, and the supporting device is inconvenient to adjust. The application range is limited, and inconvenience is caused. The supporting rods are controlled to move up and down by rotating the first rotating handles respectively, the top ends of the supporting rods abut against the bottoms of the arc-shaped supporting plates, and therefore the supporting device can adjust the heights of the top ends of the supporting rods respectively according to culverts of different structures so as to be flexibly suitable for the culverts of different structures.

This invention discloses a method for analyzing the meridional strain of air springs based on piecewise integration of elliptical arc length, belonging to the technical field of vehicle suspension systems or rubber elastic elements design. The method includes the following steps: approximating the arc segment from the top of the air spring generatrix to the outermost bulge point as the first quadrant of an ellipse, determining the major and minor semi-axes of the reference and inflation states; introducing normalized coordinates to establish a linear mapping of the abscissas of the two states, constructing an elliptical arc length infinitesimal element and transforming it to the same interval for integration; dividing the interval into even-numbered equal parts, using the complex Simpson method to obtain the arc length piecewise, calculating the ratio of the inflation arc length to the reference arc length as the elongation ratio, and taking the natural logarithm to obtain the true meridional strain of each segment of the generatrix; this invention can accurately describe the non-uniform deformation of each segment of the generatrix during air spring inflation, providing a basis for strain prediction and fatigue assessment.

A three-dimensional curved surface forming method comprises the steps that stretch-forming machine stretching cylinders arranged on the two sides of the mold stretch-forming direction of a three-dimensional curved surface forming tool and stretch-forming machine stretching cylinder clamps capable of rotating around a shaft in a segmented mode move together so that bending and stretching motion loads can be applied to the two ends of a plate laid on a mold, and therefore the plate can be attached to the mold in a segmented mode; the x-direction contour section line with the largest chord height of the mold serves as a control contour section line, then stretch-forming area segmentation division is conducted on the control contour section line according to the curvature and arc length changes of the control contour section line, dispersion of the elongation of each stretch-forming area is achieved, and finally stretching is conducted according to the stretch-forming elongation of each stretch-forming area, so that the stretch-forming area is obtained. And a three-dimensional curved surface with high appearance precision is further obtained. Segmented stretch forming is provided, the elasticity and plastic deformation uniformity in the stretch forming range of each section is effectively improved, deformation uniformity of overall stretch forming is achieved, and the stretch forming precision and the stretch forming efficiency of the stretch forming process are comprehensively improved by dividing the stretch forming areas.

A method for calculating the in-plane nonlinear deformation of an arch structure with axial defects in a Cartesian coordinate system is presented. This method is based on two states of the arch structure's curve element in the Cartesian coordinate system: an ideal axis and an actual axial defect. It derives the changes in the arc length and curvature of the curve element before and after deformation, obtaining expressions for the nonlinear compressive and bending strains in the in-plane of the arch structure with axial defects in the Cartesian coordinate system. The method also derives the nonlinear equilibrium differential equations in the in-plane of the arch structure with axial defects in the Cartesian coordinate system, obtaining solutions that satisfy the mechanical and geometric boundaries of the arch structure with axial defects. Finally, the method derives the nonlinear equilibrium governing equations in the in-plane of the arch structure with axial defects, ultimately obtaining the solution to the nonlinear mechanical problem in the in-plane of the arch structure with axial defects in the Cartesian coordinate system. This method can obtain the essence of the nonlinear mechanical problem of the arch structure with axial defects in the Cartesian coordinate system, filling the gap in the nonlinear strain-displacement expression for the in-plane of the arch structure with axial defects in the Cartesian coordinate system.

The application relates to the technical field of motion planning, and discloses a corner fairing method of an asymmetric Airthoid-arc, which comprises the following steps: constructing a tool path fairing curve which is sequentially connected by a first Airthoid curve, an arc and a second Airthoid curve, and is used for fairing a corner formed by adjacent straight line segments; preliminarily setting a first transition length and a second transition length according to the lengths of the line segments on the two sides of the corner; solving the first and second tangent angles according to geometric constraints, tangential continuity, curvature continuity constraints and position continuity constraints; if there is a solution, analytically calculating a current approximate error; and finally analytically calculating the curvature extreme value and the arc length of the fairing curve. The asymmetric curve structure is adopted, the corner space is fully excavated, the curvature extreme value is small, the arc length can be analytically expressed, and the profile error is controllable, so that the numerical control machining efficiency is improved.

The application relates to a three-dimensional continuous shape estimation method and system of a flexible robot, wherein the method combines the arc length of the flexible robot and unknown external loads from the environment with a Cosserat elastic rod model and a Cosserat elastic string model to generate a Lie algebra coupled statics model representing a tendon-driven model, models the external loads as Gaussian process noise to construct a prior probability model, obtains a prior probability distribution of the flexible robot in a Lie algebra space, constructs a measurement noise model in the Lie algebra space according to discrete measurement poses captured by a sensor and measurement noise, obtains a predicted measurement value, fuses the prior probability distribution and the predicted measurement value to obtain a posterior shape estimation of the flexible robot, and calculates a continuous three-dimensional shape estimation of the flexible robot and a first credibility of the continuous three-dimensional shape estimation according to the posterior shape estimation and a Gaussian process interpolation method. Therefore, the application realizes accurate perception of the continuous three-dimensional shape of the flexible robot.

The utility model relates to the technical field of high-altitude platforms, and discloses an arc convolution platform attached to a high-altitude bridge. The keel frame is fixedly connected to the side, provided with the arc-shaped plate, of the horizontal plate, the keel frame comprises a variable-curvature sector ring frame, the variable-curvature sector ring frame comprises an outer arc edge, an inner arc edge and two ring wide edges, the inner arc edge is attached to the outer edge of the arc-shaped plate, and the curvature and the arc length of the outer arc edge are larger than those of the inner arc edge; the tempered glass plate is fixedly installed on the keel frame and comprises an outer arc edge, an inner arc edge and two annular wide edges, the inner arc edge is attached to the inner arc edge, the annular wide edges are longer than the annular wide edges, the curvature of the outer arc edge is the same as that of the outer arc edge, and the arc length of the outer arc edge is larger than that of the outer arc edge; the technical problem that an existing sightseeing platform cannot be used for stage performance and cannot meet the suspension effect is solved.

This utility model relates to the field of vehicle gas supply technology and discloses a gas cylinder mounting bracket, including a first main body and a second main body fixedly connected. The front of the first main body has an arc-shaped portion along its length, and a straight portion extends smoothly from the end of the arc-shaped portion. The shape of the arc-shaped portion is adapted to the gas cylinder, and the arc length of the arc-shaped portion satisfies the following condition: the plane where the end of the arc-shaped portion and the straight portion are located is above the plane where the lowest point of the arc-shaped portion is located and below the plane where the beginning of the arc-shaped portion is located. A first groove is provided on the back of the first main body along its length to fit the second main body into the first main body, and both ends of the second main body extend beyond the corresponding ends of the first main body. A protrusion is provided at the end of the second main body, protruding towards the front of the second main body and inclined at the top. Reinforcing members are provided at both ends of the second main body. Mounting holes are provided at least at the beginning of the second main body and the protrusion. Mounting members are provided on both sides of the first main body. This bracket meets the ground clearance requirements of existing vehicles, changes and simplifies the assembly process, optimizes overall strength, and provides high gas cylinder protection performance.

The utility model relates to the technical field of bearings, and discloses a spliced and assembled annular clamp spring which comprises a body and convex ribs arranged on the outer walls of the two axial ends of the body, the body is provided with a first section and a second section in the circumferential direction of the body, and locking structures are arranged at the ends, close to each other, of the first section and the second section. The end of the first section and the end of the second section are connected through a locking structure so that movement of the first section and the second section in the circumferential direction of the body can be limited, then the arc length of the first section and the arc length of the second section can be reduced, pressing force needing to be applied to the first section and the second section when the annular clamp spring is installed can be reduced, and the labor-saving effect is achieved; and therefore, the effect of conveniently mounting the annular clamp spring to the inner ring is achieved, and the mounting efficiency of the annular clamp spring is improved. Meanwhile, only small pressing force needs to be applied to the first section and the second section, and then the situation that metal fatigue is generated due to large deformation of the body is avoided, so that the deformation capacity of the annular clamp spring is guaranteed, and then the connection stability of the annular clamp spring and the inner ring is improved.