31 results about "Bending beam" patented technology

The utility model provides a kind of for bogie's lower bending beam and straddle type bogie frame, the lower bending beam for bogie includes: left vertical plate and right vertical plate;Lower bending beam upper cover plate;Lower bending beam lower cover plate;First sealing plate, the first sealing plate with the horizontal upper cover, horizontal lower cover, left vertical plate and right vertical plate are connected;Air chamber muscle plate, the air chamber muscle plate with the inclined lower cover, left vertical plate and right vertical plate are connected;Second sealing plate, the second sealing plate with the inclined upper cover, air chamber muscle plate, left vertical plate and right vertical plate are connected;The left vertical plate, right vertical plate, lower bending beam upper cover plate, lower bending beam lower cover plate, first sealing plate, air chamber muscle plate and second sealing plate are enclosed to form air chamber.The lower bending beam for bogie of the utility model, sets up second sealing plate and air chamber muscle plate to replace original baffle, while guaranteeing structural strength, reduce manufacturing difficulty, realize 100% detection of air chamber all welds.

The application provides a straddle type bogie frame and a straddle type monorail vehicle, the straddle type bogie frame comprising a combined beam and a down bending beam, the combined beam comprising a high side beam, a low side beam, a traction beam connecting the high side beam and the low side beam, and an end beam connecting the high side beam and the low side beam, the number of the down bending beams being two, and the two down bending beams being connected with the high side beam and the low side beam respectively, and the combined beam and the down bending beam being connected in a T joint fillet welding and V type butt joint welding mode. The straddle type bogie frame and the straddle type monorail vehicle are formed by combining and welding the combined beam and the down bending beam formed in a split mode, the air chamber is independently formed in the down bending beam, the low side beam and the high side beam are decoupled, the structure is better in stress bearing, and the weld accessibility is better; the combined beam serves as a base, and when the combined beam is combined with the down bending beam, the overall welding deformation is small, the combined beam is not prone to twisting, and the size after welding is easy to control.

The invention provides a multi-curvature modeling glass curtain wall connecting structure and a construction method, and belongs to the technical field of glass curtain wall connecting structures. The multi-curvature modeling glass curtain wall connecting structure comprises a plurality of layers of curved glass sets, a plurality of stand columns, a plurality of supporting plates and a fixing assembly. The construction method of the connecting structure comprises the steps that S1, the stand columns are installed; s2, a supporting assembly is installed; s3, welding a supporting plate; s4, a limiting square pipe is welded; s5, mounting a base; s6, curved glass is installed, and a pressing plate is installed to fix the glass; and S7, a decorative cover plate is installed. According to the glass curtain wall, the gravity load of the glass is directly transmitted to the stand column through the supporting plate, a traditional cross beam structure is replaced, the permeability, continuity and integrity of the glass curtain wall are improved, the integral effect that multiple pieces of glass look like a whole piece can be achieved, the situation that a single piece of glass is oversized in specification is avoided, safety is improved, and the glass hoisting difficulty is reduced. And an arc cross beam does not need to be machined, errors caused by the arc cross beam are avoided, and cost is reduced.

The invention discloses a self-driven bistable state intelligent bracelet. The bracelet comprises a bracelet shell, and the bracelet shell is of a symmetrical nested structure formed by nesting an outer ring, an inner lantern ring, an outer fixing ring and an inner fixing ring; a flexible negative stiffness bending beam is arranged between the outer fixing ring and the inner fixing ring, and the two ends of the flexible negative stiffness bending beam are hinged to the outer fixing ring and the inner fixing ring respectively. The two ends of the outer fixing ring are each provided with a bistable power generation module, and the two bistable power generation modules are arranged in a mirror image mode. The bistable structure formed by the flexible negative stiffness bending beams can convert low-frequency and irregular mechanical energy generated by human body movement into large-amplitude transition movement, so that the friction nanometer power generation module is efficiently driven, the energy conversion efficiency under the low-frequency excitation condition is remarkably improved, the endurance problem of the bracelet is fundamentally solved, and the safety of the bracelet is improved. The method is suitable for long-term health monitoring, motion tracking and other scenes.

Revealed is a microelectromechanical (MEMS) oscillator, comprising: a first component; a movable component which is mounted so that it can move relative to the first component, at least in a first direction; wherein the movable component assumes a stop position relative to the first component when the deflection is sufficiently large, wherein the movable component touches the first component at least at a first stop point in the stop position; at least one actuator component, which is designed as a bending beam clamped at both ends with a beam longitudinal axis running perpendicular to the first direction, wherein the at least one actuator component is designed to selectively assume an undeformed configuration as well as a deformed configuration, in which the at least one actuator component is deflected at least partially perpendicular to its beam longitudinal axis, depending on an activation; wherein at least one actuator component is designed to transmit a force between the first component and the movable component in the deformed configuration when the movable component is in the stop position.

Forklift truck with a force measuring device, wherein the force measuring device is designed as a bending force measuring device (2) and additionally - at least partially - as a chassis component, characterized in that the bending force measuring device (2) has at least one elastically bendable element, wherein the bendable element is designed as a bending beam, wherein the bending beam forms a measuring section (2a, 2b, 2c, 2d) on which .Deformations caused by bending loads are measurable, wherein the bending force measuring device (2) is designed as a support body with integrally formed pendulum pins (P1, P2) for suspension on a vehicle, wherein a continuous horizontal transverse recess (Q1; Q2) is incorporated adjacent to each pendulum pin (P1; P2), which is bounded above and below by a measuring section (2a; 2b; 2c; 2d), wherein the bending force measuring device (2) has at least one measuring sensor (M1; M2; M3; M4) with which a bending of the at least one elastically bendable element can be measured, and the at least one measuring sensor (M1; M2; M3; M4) is arranged in the transverse recess (Q1, Q2) of the bending force measuring device (2).

The invention discloses a small-size low-rigidity iron-gallium magnetostriction driving module and an underwater acoustic transducer. The iron-gallium magnetostriction driving module comprises an iron-gallium bent beam, a driving coil, a permanent magnet and a high-permeability transition block, the iron-gallium bent beam comprises a main beam, an auxiliary beam and fixed end blocks which are integrated, the main beam and the auxiliary beam are arranged in parallel, the two ends of the main beam and the two ends of the auxiliary beam are connected through the fixed end blocks, the fixed end blocks downwards extend out of beam feet, and the beam feet exceed the lower edge of the auxiliary beam and serve as the open end and the tail end of a magnetic induction line of a conduction bias magnetic field. A boss is upwards arranged in the middle of the main beam, and a connecting hole is reserved in the middle of the boss; the driving coil comprises main beam coils and auxiliary beam coils, the main beam coils are wound on the main beams on the two sides of the boss respectively, and the auxiliary beam coils are wound on the auxiliary beams. According to the driving module, through the low-rigidity bending mode design and the dynamic and static separated magnetic circuit design, the double breakthrough that the resonant frequency of the underwater acoustic transducer driving part body is greatly reduced and the height size is synchronously reduced is achieved.

The invention discloses a method for predicting dynamic characteristics of a drilling riser in an ultra-deep water free standing mode, which comprises the following steps of: establishing a two-dimensional coordinate system by taking a submarine blowout preventer as an original point, and establishing a fluid infinitesimal and riser infinitesimal mechanical equilibrium equation according to the Alembert principle; in consideration of environmental loads generated by waves, ocean currents and wind and buoyancy generated by a buoyancy barrel on the top of the riser, a classical bent beam theory is adopted to deduce a transverse differential equation of the riser in the ultra-deep water free standing mode, boundary conditions of a dynamic behavior prediction model of the riser in the ultra-deep water free standing mode are determined, and a finite element method is adopted to predict the dynamic behavior of the riser in the ultra-deep water free standing mode. An equation is solved by combining a Newmark-beta integral method, a dynamic behavior prediction model of the marine riser in the ultra-deep water free standing mode is finally established, and the dynamic characteristic behavior of the marine riser in the mode can be clearly predicted.

The embodiment of the utility model provides a connecting seat of an aerial work platform, and relates to the technical field of aerial work. The connecting seat of the aerial work platform comprises a swing cylinder mounting part, a transition connecting part and a hanging basket mounting part which are sequentially arranged, the transition connecting part is used for supporting a hanging basket together with the hanging basket mounting part, and the transition connecting part comprises a connecting beam which comprises a first bent plate; the first bent plate comprises a first supporting plate and a second supporting plate which are connected at an included angle and integrally formed, the second supporting plate is used for abutting against the bottom of the hanging basket and is connected with the hanging basket mounting part, and the connecting beam is a box type bent beam. The box-type connecting beam can improve the bending resistance of the connecting beam and can also improve the torsional rigidity, and the first supporting plate and the second supporting plate are integrally formed, so that the strength of the first bending plate is ensured, and the stability of the hanging basket connected with the connecting seat during high-altitude operation can be ensured.

The utility model belongs to the technical field of bridge girder erection machines, and provides a rail beam displacement integrated bridge girder erection machine middle support which comprises a middle supporting leg, a movable hanging beam and a bracket, the middle supporting leg is located above a transverse rail, the middle supporting leg comprises a bent beam and a movable hanging frame, the middle of the bent beam is concave downwards to be close to the top of the transverse rail, and the movable hanging frame is arranged on the middle supporting leg. The two ends of the camber beam are lifted upwards, a space for installing the electric walking wheels is formed between the two ends of the camber beam and the transverse rails below the camber beam, and the two movable hanging brackets are arranged above the two ends of the camber beam correspondingly so that the two movable hanging brackets can be hung on the corresponding longitudinal main beams, and the movable hanging brackets can move in the length direction of the longitudinal main beams; and the movable hanging beam is transversely arranged right above the middle supporting leg. Integrated synchronous displacement of the middle supporting leg and the transverse rail can be achieved, the operation process is simple and convenient, working efficiency is high, deviation of the position of the transverse rail after the transverse rail is lowered does not need to be worried, the correct transverse moving direction of the middle supporting leg is guaranteed, and working quality is high.

The present invention relates to an arrangement for detecting a bearing force of a bottom bracket of an electric bicycle, comprising a bottom bracket, a bearing receptacle which at least partially surrounds the bottom bracket in a ring-like manner, a bearing force sensor with at least one first sensor element and at least one second sensor element, and a detection unit, wherein a deformable bending beam is formed on the bearing receptacle, wherein the first sensor element is attached to the bending beam, wherein the second sensor element is attached to a stationary part of the bearing receptacle, wherein the first sensor element and the second sensor element are connected to form a first measuring bridge, and wherein the detection unit is configured to detect a bearing force at the bottom bracket based on signals detected by means of the measuring bridge.

The invention relates to a bending installation (1) comprising: a press brake (2) for carrying out a bending operation on a workpiece to be bent (W); and a handling robot (3) for feeding the workpiece to be bent (W) to the press brake (2) and removing the workpiece to be bent (W) from the press brake (2), wherein the press brake (2) has a longitudinal axis (L), a transverse axis (Q), and a vertical axis (H) which define a Cartesian coordinate system, wherein the press brake (2) comprises a stationary lower bending beam (4) for receiving a lower tool and a movable upper bending beam (5) for receiving an upper tool, wherein the upper bending beam (5) is movable relative to the lower bending beam (4) within a bending plane (BE) defined by the longitudinal axis (L) and the vertical axis (H), wherein the handling robot (3) is designed as an articulated-arm robot and is arranged at a distance from the bending plane (BE), as viewed along the transverse axis (Q), wherein the handling robot (3) is mounted on a mounting console (6) which is configured and arranged relative to the press brake (2) such that a main axis (A1) of the handling robot (3) is inclined at an inclination angle (α, β) relative to the vertical axis (H) of the press brake (2).

A piezoelectric device comprises at least a base and a bending beam. The bending beam has a first end section anchored by the base and a second end section not supported by the base. The bending beam includes at least one piezoelectric element and a reinforcing layer. The piezoelectric element comprises a first electrode, a piezoelectric layer, and a second electrode. The reinforcing layer supports the piezoelectric element. The reinforcing layer has a Poisson's ratio less than 0.2 or greater than 0.4.

The invention discloses a two-dimensional scanning micromirror resistant to high-strength impact. The two-dimensional scanning micromirror comprises a frame, a driving unit, a slow shaft, a fast shaft, a rotating mirror and a damper. The driving unit is arranged in the frame; the left side and the right side of the driving unit are rotationally connected with the frames on the two sides of the driving unit through two slow shafts which are arranged in a multi-time bending mode. The rotating mirror is arranged at the center position in the driving unit, and the upper side and the lower side of the rotating mirror are rotationally connected with the driving beams of the driving unit on the upper side and the lower side of the rotating mirror through two vertically-arranged fast shafts; the dampers are arranged on the frame and correspond to the four corners of the driving unit. Through the design of the bending beam slow axis and the frame damper, the two-dimensional scanning micromirror can achieve large-angle FOV, meanwhile, the two-dimensional scanning micromirror resists 1500G high-strength impact in the + / -x direction, the + / -y direction and the + / -z direction, an original packaging structure does not need to be changed, packaging is easy, cost is low, the two-dimensional scanning micromirror is suitable for multi-scene application, defects in the prior art are overcome, and the two-dimensional scanning micromirror has high application value.

This invention discloses a method for constructing a discrete element model (DEM) of pavement structure fracture performance based on the CZM (Concentrated Zymmetric Model), comprising the following steps: constructing a discrete particle model of the pavement structure using a DEM; classifying particle clusters in the discrete particle model and setting material properties; determining the contact type and contact model between the boundaries of different types of particle clusters; for the bilinear cohesive model, introducing two parameters—the bond strength of the pavement structure and the ratio of the slope of the descending segment to the slope of the ascending segment in the bilinear cohesive model curve—to construct a new bilinear cohesive model; rewriting the code and importing it into the DEM, inputting the two parameters to complete the construction of the CZM-based DEM of pavement structure fracture performance; using the DEM for simulation and conducting real experiments simultaneously, comparing the simulated data with the real experimental data to verify the accuracy of the DEM. This invention fills the gap in applying the DEM based on the cohesive model to three-point bending beam tests of pavement structures.

1. The name of the design product: front windshield of electric tricycle (No. 2 curved beam). 2. The use of the design product: for the front windshield of electric tricycle. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A flexure beam stack structure compliant shroud for a gas turbine engine is disclosed. An example shroud assembly includes a plurality of concave flexure beams, a plurality of convex flexure beams, and a plurality of bumpers, wherein a first concave flexure beam of the plurality of concave flexure beams is counter-coupled with a first convex flexure beam of the plurality of convex flexure beams, a second concave flexure beam of the plurality of concave flexure beams is counter-coupled with a second convex flexure beam of the plurality of convex flexure beams, the first and second concave flexure beams are configured to stack on top of the first and second convex flexure beams, a first bumper of the plurality of bumpers is coupled to the first and second concave flexure beams, and a second bumper of the plurality of bumpers is coupled to the first and second convex flexure beams.

The invention provides a preparation method of low-rolling-resistance modified asphalt suitable for an energy-consumption-reducing road, belongs to the field of energy conservation and emission reduction of asphalt pavements, and solves the problems that the selection basis of a modifier of the current low-rolling-resistance modified asphalt is insufficient, viscoelasticity and energy dissipation are not clear, and a systematic preparation method is lacked. The method comprises the following steps: firstly, selecting matrix asphalt, and doping three modifiers to prepare low-rolling-resistance modified asphalt; secondly, carrying out a temperature and frequency scanning test by utilizing a dynamic shear rheometer to obtain a shear modulus and a phase angle; then testing the low-temperature anti-cracking performance by adopting a bending beam rheometer; then multiple stress creep recovery and linear amplitude scanning tests are carried out, and the elastic recovery capability and the fatigue life are evaluated; and finally analyzing a phase structure and an element and chemical bond structure by combining a laser confocal microscope and an X-ray photoelectron spectroscopy, and determining the optimal formula of the low-rolling-resistance modified asphalt according to the indexes. According to the invention, the rolling resistance of the vehicle during running is reduced, and a new technical approach is provided for the development of energy-consumption-reducing road materials.

A micro-electromechanical (MEMS) oscillating element. The MEMS oscillating element includes: a first component; a movable component mounted to be movable relative to the first component in a first direction, the movable component assumes a stop position relative to the first component upon a sufficiently large deflection, and contacts the first component in the stop position; at least one actuator component configured as a bending beam clamped on both sides with a beam longitudinal axis running perpendicular to the first direction. The actuator component is configured to selectively assume an undeformed configuration and a deformed configuration, in which the at least one actuator component is at least partially deflected perpendicular to its beam longitudinal axis. The at least one actuator component, in the deformed configuration, transmits a force between the first component and the movable component if the movable component is in the stop position.

The utility model provides a kind of anti-nodding torsion bar device, bogie and vehicle, it is related to rail transit technical field, anti-nodding torsion bar device is applied to the frame of vehicle bogie;Frame includes composite beam and lower bending beam, lower bending beam one end is connected in the side wall of composite beam, other end is located in the outside of composite beam;Anti-nodding torsion bar device includes torsion bar and a pair of connecting rod;Torsion bar is perpendicular to composite beam, and both ends are equipped with connecting rod, and two connecting rods are located in the same side of torsion bar;One end of one connecting rod away from torsion bar is connected with composite beam, and one end of another connecting rod away from torsion bar is connected with lower bending beam;Connecting rod is telescopic link with adjustable length. By adjustable connecting rod structure, make torsion bar system always in optimum working interval, avoid the efficiency attenuation caused by displacement overrun. At the same time, telescopic link structure simplifies the device adjustment process, and length adaptation can be completed without disassembly. The utility model can guarantee the stability of vehicle operation.

A negative Poisson's ratio vibration absorbing base and milling device for milling thin-walled parts are provided. The base comprises a bottom plate and a workpiece supporting plate. Vibration reducing units are provided between the bottom plate and the workpiece supporting plate. Each of the vibration reducing units comprises a negative Poisson's ratio structure. The negative Poisson's ratio structure is fixed on a first vertical plate. Top end of the first vertical plate is fixed to the workpiece supporting plate, and bottom end of the first vertical plate is fixed to the bottom plate. Both sides of the first vertical plate above the negative Poisson's ratio structure are provided with bending beams. One end of a bending beam of the bending beams is connected to the first vertical plate, and an other end of the bending beam is connected to the second vertical plate fixed on the bottom plate.

This invention discloses a quasi-zero stiffness vibration isolator with bending beams, comprising: at least two sets of stacked bending beam assemblies, and bases and upper supports respectively disposed at both ends of the bending beam assemblies. The bases and upper supports are used to constrain the lateral movement of the ends of the bending beam assemblies. Each set of bending beam assemblies includes two symmetrically arranged bending beams, with both ends of the two bending beams connected to the base and upper support respectively. The at least two sets of bending beam assemblies are arranged in an inner-outer stacked manner or in a top-bottom stacked manner. The quasi-zero stiffness vibration isolator with bending beams of this invention is small in size and can provide a large supporting force (i.e., load-bearing capacity) in a confined space. By setting at least two sets of stacked bending beam assemblies, the supporting force can be multiplied, resolving the contradiction between limited installation space and wide-frequency isolation.

1. The name of the design product: electric vehicle bending beam (No. 3). 2. The use of the design product: for electric vehicle bending beam. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a harmonic reducer torque sensor, which comprises an elastic body, a double shear strain gauge, a signal amplification circuit board and a cable assembly, and is characterized in that the elastic body comprises a substrate, a first elastic body part, a second elastic body part and a third elastic body part which are integrally arranged, and the second elastic body part is uniformly provided with a plurality of shear beam arms along the circumferential direction; the double-shear strain gauge is arranged on the upper surface and / or the lower surface of the shear beam arm, an annular flange groove is formed between the second elastic body part and the third elastic body part, and the signal amplification circuit board is installed in the annular flange groove. The design of uniformly distributed shear beam arms is adopted, a flat symmetrical structure is adopted, the stress is uniform, the bending moment influence under torsion can be reduced, and the torsional rigidity is superior to that of a common bent beam structure. The strain gauges are pasted on the upper surface and the lower surface of the annular arm, so that better precision and compensation can be obtained through the bridging mode compared with the mode of pasting the strain gauges on one side.

The utility model relates to the technical field of carriages, and discloses a wide-body dumper carriage which comprises a carriage body, a bottom plate is fixedly connected to the lower surface of the carriage body, a first air guide opening is formed in the bottom plate, a longitudinal beam is fixedly connected to the lower surface of the bottom plate, and a second air guide opening is formed in the longitudinal beam in a penetrating mode. A supporting beam is fixedly connected to the outer wall of the longitudinal beam, a cross beam is fixedly connected to one side of the outer wall of the longitudinal beam, two third air guiding openings are formed in the cross beam, a side bent beam is fixedly connected to one side of the cross beam, and an air outlet beam is fixedly connected to one end of the cross beam. According to the utility model, through the design of the plurality of longitudinal beams and the connecting cavities, the heating coverage rate of the bottom plate and the transition area is obviously improved, and meanwhile, the connectivity of the cavities is improved through the gas guide ports I, so that tail gas diffusion is more uniform; tail gas does not enter a cavity of the supporting beam, the shock absorber is prevented from being grilled, and the service life is prolonged; the first filter plate and the second filter plate effectively prevent blocking, stable operation of the system is guaranteed, and practicability of the whole carriage is improved.

The application provides a flexible mechanism based on a curved beam structure, which comprises an outer wall plate, an inner wall plate, an internal structure and a displacement driver; one end of the outer wall plate is connected with one end of the inner wall plate, and the other end of the outer wall plate is used for connecting external equipment; the external equipment, the outer wall plate and the inner wall plate form a triangular area; one end of the internal structure is connected with the outer wall plate, and the other end of the internal structure is connected with the outer wall plate; the internal structure comprises a curved beam; or the internal structure comprises a curved beam and a straight beam; one end of the displacement driver is mounted on the external equipment, and the other end of the displacement driver is connected with the inner wall plate or the internal structure; the displacement driver can realize the overall deformation of the flexible mechanism by driving the inner wall plate or the internal structure. The curved beam is used as the internal structure, and the curved beam has higher flexibility than the straight beam, so that the flexible mechanism structure can realize local small deformation, overall large deformation, high rigidity and continuous bending effect, and the problems of small deformation and large driving force of the traditional flexible mechanism are solved.

Disclosed is a micro-electro-mechanical (MEMS) vibration element, comprising: a first member; a movable member movably supported relative to the first member at least in a first direction; wherein, in the event of a sufficiently large offset, the movable component assumes a stop position relative to the first component, in which the movable component is in contact with the first component at least at a first stop point; at least one actuator member configured as a curved beam clamped on both sides, having a beam longitudinal axis extending perpendicular to the first direction, the at least one actuator member being configured to selectively assume, upon activation, an undeformed configuration in which the at least one actuator member is deformed, and a deformed configuration in which the at least one actuator member is deformed. The at least one actuator member is offset at least partially perpendicular to its beam longitudinal axis; wherein the at least one actuator member is configured, in the deformed configuration, to transfer a force between the first member and the movable member when the movable member is in the stop position.

Embodiments of the present application provide a probe and a probe card comprising the probe, which are used for testing an object under test. The probe comprises: a first probe head section located at an end of the probe, the first probe head section being in contact with a contact pad of the object under test when testing said object; a second probe head section located at the other end of the probe, the second probe head section being in contact with a probe pad of a space transformer when testing the object under test, such that the probe establishes an electrical signal transmission channel between said object and the space transformer; and a bending beam section connected between the first probe head section and the second probe head section. The bending beam section is provided in the length direction with two or more recesses which are not connected to one another, and when the object under test is tested, the first probe head section abuts against the contact pad to deform and bend the bending beam section. According to the probe and the probe head provided by the present application, the magnitude of the contact force between the probe and the object under test / the space transformer can be adjusted, which is beneficial for the reliability of the design and the service life of the design of the probe.

A system for providing an angled construction or bent beam construction. Such system may include a first beam comprising a first elongated beam segment having a first interlocking joint portion at one end, and a second beam comprising a second elongated beam segment having a second interlocking joint at one end, wherein the first interlocking joint portion is configured to rotatably couple to the second interlocking joint to form a rotatable joint such that the angle between the first beam and the second beam is adjustable.

A directly-buried camber beam weighing sensor assembly comprises a fixed base, a camber beam weighing sensor body is installed on the fixed base, a threaded cylinder is fixed to the fixed base, a disc spring is arranged in the threaded cylinder, an adjusting screw is fixed to the lower side of the disc spring and is in threaded connection with the threaded cylinder, and a rotating disc is fixed to the adjusting screw. The disc spring is installed on the lower side of the camber beam weighing sensor body, and a supporting rod is fixed on the disc spring. The supporting rod is arranged on the lower side of the camber beam weighing sensor, and the disc spring is fixed at the bottom of the supporting rod; when the load exceeds a first weighing threshold value, the lower surface of the camber beam is in contact with the support rod to obtain additional support; and if the load is continuously increased and exceeds the second weighing threshold value, the disc spring is compressed and contracted, the impact energy is converted into elastic deformation, and plastic deformation or structural damage caused by rigid support is prevented.