178 results about "Force balance" patented technology

The invention relates to a mechanical arm disordered grabbing algorithm, and belongs to the technical field of robotics, and the method comprises the steps: firstly, obtaining a target material image and a point cloud sample, and training a multi-modal attention fusion perception model through sample enhancement processing and a difficult case mining mechanism after the target material image and the point cloud sample are labeled with categories, postures and grabbing areas; secondly, a mechanical arm obtains operation area data, the operation area data are input into a multi-modal attention fusion perception model to obtain initial attitude parameters, errors are corrected by combining with a visual data fusion calibration model, and the material stacking state is judged through a dynamic reference comparison method; thirdly, based on the correction parameters and the stacking state, an evaluation function is constructed to screen collision-free and stress-balanced grabbing points, and a collision-free path is planned by fusing kinematics constraints of the mechanical arm; and finally, the grabbing action is executed, the strength and the posture are adjusted in real time according to the contact force and the position deviation, the material stability is evaluated through vision after grabbing, and the stability and the operation efficiency of the mechanical arm in a complex disordered scene are improved.

The invention belongs to the anti-seismic field of underground engineering, and particularly discloses a pressure self-balancing tunnel lining surrounding rock composite damping structure and a pressure self-balancing method.The structure comprises a composite damping layer, and the composite damping layer comprises a surrounding rock contact layer close to the side of surrounding rock and a lining contact layer close to the side of a lining; the surrounding rock contact layer is made of a high-damping rubber-basalt fiber composite material and is pre-pressed and embedded into a surrounding rock crack; the lining contact layer is made of a composite viscoelastic material in which flexible capsules are uniformly embedded; the flexible capsule body is of an upper-lower double-layer structure composed of an upper capsule body and a lower capsule body, and the upper capsule body and the lower capsule body are filled with non-Newtonian fluid. A storage bag is arranged on one side of the lower-layer bag body and is separated from the other part of the lower-layer bag body; and one-way hydraulic valves are arranged between the upper-layer bag body and the lower-layer bag body and between the storage bag and the lower-layer bag body. The force balance between the surrounding rock and the lining can be adjusted according to the pressure designed in advance, and deformation coordination among the surrounding rock, the buffer layer and the lining is facilitated.

The invention discloses a heavy-load linear guide rail pair loading device, and relates to the field of linear guide rail pair tests, the heavy-load linear guide rail pair loading device comprises a supporting rack component, a sliding test component and a hydraulic loading component, the supporting rack component comprises a main supporting rack, a portal frame and a linear driving assembly; the sliding test component comprises a working table, a tested guide rail pair and a load docking port; the hydraulic loading component comprises a hydraulic cylinder and an adapter port, and the adapter port and the load docking port are configured to realize stress balance between the adapter port and the load docking port when being subjected to a load; wherein the upper surface of the load docking port is provided with a plurality of grooves, the grooves are internally provided with sliding tables of which the tops are inclined planes, the sliding tables are provided with positioning convex parts capable of sliding along the sliding tables, and the lower end of the adapter port is provided with a plurality of positioning concave parts which correspond to the positioning convex parts one by one and are matched with the positioning convex parts. The influence of a load deflection angle is eliminated by using the sliding table, and positioning is realized through the matching of the positioning convex part and the positioning concave part, so that the uniformity of stress load of each point of the detected guide rail pair is ensured.

The application discloses a vehicle frame and a vehicle, and belongs to the technical field of vehicle parts, and at least partly solves the technical problems of heavy overall structure of the vehicle and insufficient lateral space of the vehicle caused by the suspension support and the suspension installation. The vehicle frame provided by the application comprises a suspension support and longitudinal suspension arms, the two longitudinal suspension arms are symmetrically arranged at the front side and the rear side of the suspension support respectively, the longitudinal suspension arms are hingedly arranged with the suspension support, the longitudinal suspension arms are arranged to rotate in a vertical plane, and the other ends of the longitudinal suspension arms are connected to wheels. The vehicle frame of the vehicle makes the longitudinal suspension arms on the front wheels and the rear wheels share one suspension support, saves space, reduces the overall weight of the vehicle frame, the front longitudinal suspension arm and the rear longitudinal suspension arm on the suspension support are symmetrically arranged, force balance is achieved, the stability of the suspension support is further improved, and finally, the longitudinal suspension arms swing longitudinally in the vertical plane, thereby saving the lateral installation space of the vehicle.

The utility model discloses hydraulic engineering gate opening and closing force balance adjusting equipment, and relates to the technical field of hydraulic engineering, the hydraulic engineering gate opening and closing force balance adjusting equipment comprises a gate frame, the inner side of the gate frame is slidably provided with a gate body, the top end of the gate frame is fixedly connected with a supporting frame, and the upper surface of the supporting frame is fixedly connected with a protective shell; a lifting mechanism and a lubricating mechanism are arranged in the protective shell; the lifting mechanism is used for driving the gate body to be lifted, opened and closed, and the lifting mechanism comprises two winding discs rotationally connected to the inner wall of the protective shell. According to the hydraulic engineering gate, the lifting mechanism is arranged at the top of the hydraulic engineering gate, when the gate is opened and closed, the driving motor can be used for driving the two worms with the reverse threads to rotate, then the two winding discs are driven to rotate reversely at the same time, then the two winding discs are used for winding and unwinding the steel cable, the gate is lifted at the same time, and the working efficiency is improved. The top of the gate is subjected to balanced tension, and the smoothness and stability of the gate in the lifting opening and closing process are improved.

The invention relates to a constant-force linear elastic device which comprises a base provided with a guide groove; one end of the elastic component is connected with the base; the sliding mechanism is connected with the other end of the elastic component and can move in the guide groove; restraining force exists between the guide groove and the sliding mechanism and is set to offset part of first elastic force, so that the output elastic force of the sliding mechanism is kept at a preset constant value and is unchanged in direction, and the first elastic force is the elastic force output by the elastic component to the sliding mechanism. The guide groove is matched with the sliding mechanism, the side wall of the guide groove limits the moving direction of the sliding mechanism, so that the restraining force is generated, and the direction and the magnitude of the restraining force can dynamically change according to the position of the sliding mechanism in the guide groove and the magnitude of the elastic force of the spring. The constraining force can offset part of the first elastic force, and the final output elastic force is kept at a preset constant value and is unchanged in direction, so that the effect of constant force output is achieved, and the requirements of force balance and other scenes for constant elastic force are met.

The invention discloses a workpiece clamping force balance regulation and control method and device, and relates to the technical field of machine tool control. The method comprises the following steps: connecting a control terminal of a shaping machine tool, and outputting machine tool cutter control parameters and a machining reference surface; clamping force uniform constraint is conducted on a machine tool clamping part, and multiple sets of candidate clamping parameters are output; optimizing the plurality of groups of candidate clamping parameters to generate a plurality of groups of optimized candidate clamping parameters; determining a preset vibration characteristic threshold value of the to-be-shaped workpiece; and carrying out workpiece vibration simulation during machining, screening the multiple groups of optimized candidate clamping parameters by taking a preset vibration characteristic threshold value as a constraint, generating an optimal clamping parameter, and controlling a machine tool clamping part. The technical problem that in the prior art, the machining precision is reduced due to unstable clamping in the workpiece shaping machining process is solved, and the technical effect of improving the machining precision is achieved by accurately controlling the clamping component.

The forging forming load balancing method comprises a rear beam, a rear cylinder, a pull rod, a nut, a machine body and a die, the rear beam and the machine body are fixed through the pull rod, the rear cylinder is installed in the rear beam, a piston rod is arranged in the rear cylinder, an extrusion rod is arranged on the piston rod, and the die is directly connected with the rear beam through the pull rod and the nut. A closed inner stress structure is formed between the mold and the rear beam, so that stress balance between the mold and the rear beam is achieved; the mold has the beneficial effects that 1, the mold is connected with the rear beam through the pull rod and the nut to form a closed inner stress frame, and the stress scheme is simple in structure and low in cost; external supporting force for stress balance of the mold is converted into internal acting force between the mold and the rear beam, and the rigidity and reliability of the structure are improved;

This invention discloses a vibration damping mechanism for an irregularly shaped centrifuge device and its design method. The design method includes: establishing two balance reference planes corresponding to the upper and lower surfaces of the rotating module, respectively, and calculating the mass of the counterweight using the inertial force balance formula; determining the model of the vibration damping support based on the ratio of the interference frequency of the irregularly shaped centrifuge device to the natural frequency of the vibration damping mechanism being greater than a certain threshold; calculating the radial wall thickness of the suspended vibration damping sleeve based on the shear modulus of the material being prepared, and determining the axial length and outer diameter of the suspended vibration damping sleeve based on its installation inner diameter, thus obtaining the design parameters of the suspended vibration damping sleeve; after the vibration damping mechanism is assembled onto the irregularly shaped centrifuge device, using a dynamic balancing analyzer to test the vibration of the irregularly shaped centrifuge device at its rated speed to confirm the dynamic balancing effect. The design method of this invention is easier to operate and select, and through dynamic balancing verification analysis, it can effectively ensure the vibration damping and suppression effect of the vibration damping mechanism.

This invention relates to the field of flexible welding technology for vehicle bodies, specifically to an integrated workstation for flexible welding and online monitoring of vehicle body panels. The workstation includes an operating table and a fixing assembly. The fixing assembly includes a column, a rotating base, a telescopic rod, clamps, and a flipping mechanism. The column is detachably connected to the operating table. To improve the fit between the clamp and the weldment, and to facilitate adjustment and adaptation to different vehicle body panels, this invention utilizes a multi-level adjustable structure. This allows for rapid changes in clamping orientation, opening range, and clamping angle, thus adapting to vehicle body panels of different heights and bending directions. Furthermore, the flexibly adjustable clamp structure and adaptive jaw design ensure that the clamp remains in close contact with the surface of the weldment. The clamp base plate can be precisely adjusted to maintain a perpendicular position to the weldment's cut surface, significantly improving the fit and force balance between the clamp and the weldment, and preventing welding deformation due to unstable clamping or uneven force.

Disclosed is a roller taper grinding method for a planetary roller screw mechanism. The method includes steps as follows: step 1: determining basic parameters and a bearing capacity of a planetary roller screw mechanism to be machined; step 2: establishing deformation and force balance equations of the planetary roller screw mechanism according to the basic parameters and the bearing capacity of the planetary roller screw mechanism determined in step 1; step 3: iteratively computing an optimal grinding taper angle of roller grinding according to the deformation and force balance equations established in step 2; step 4: determining process parameters of roller grinding; and step 5: grinding a roller taper of the planetary roller screw mechanism by a machine tool according to the process parameters determined in step 4.

The utility model belongs to the technical field of seat accessories, and provides a seat plate lifting adjusting mechanism which comprises a self-powered supporting rod and a locking assembly, and the self-powered supporting rod comprises a telescopic rod and a rod sleeve arranged on the outer surface of the telescopic rod in a sleeving mode. The locking assembly comprises a limiting rod parallel to the telescopic rod, a limiting sleeve in sliding fit with the limiting rod and a clamping piece arranged in the limiting sleeve, the rod sleeve is connected with the seat plate, the limiting sleeve is fixed to one side of the rod sleeve, the inner wall of the limiting sleeve is provided with a containing groove used for containing the clamping piece, and the clamping piece is matched with the limiting sleeve in a telescopic mode. A plurality of clamping grooves corresponding to the clamping pieces are formed in the surface of the limiting rod in the axial direction at intervals. According to the adjusting mechanism, the self-powered supporting rod is used as a power source for lifting of the seat plate, the limiting rod is arranged on one side of the self-powered supporting rod, the limiting sleeve in sliding fit with the limiting rod is arranged on the rod sleeve, the limiting sleeve synchronously lifts along with the rod sleeve, and the limiting rod and the limiting sleeve share and support the seat plate for the self-powered supporting rod, so that stress is balanced during lifting and sitting of the seat plate; the stability is higher.

The invention discloses a self-adjusting overflow weir service gate which comprises at least two sets of mounting plates and a valve, the two sets of mounting plates are symmetrically and fixedly mounted on the two opposite sides of the inner wall of an overflow weir, the valve is rotationally connected to the position between the two sets of mounting plates through a connecting shaft, and the axis of the connecting shaft extends in the width direction of the overflow weir; and the supporting piece is arranged in the overflow weir. Manual operation or electric driving is not needed, automatic adjustment of the opening degree of the gate is achieved only through the synergistic effect of water flow impact force, balance weight gravity and spring elastic force, the gate is particularly suitable for remote areas and severe hydrological environments, the operation stability is remarkably improved, locking and unlocking are triggered through the floating piece at the high water level, and the angle and length are adjusted through the supporting piece in a self-adaptive mode; it is ensured that the valve can be in a force balance stable state under different water levels, and valve resetting can be achieved through the balance weight piece.

This invention discloses a winding device for steel wire mesh reinforced plastic composite pipe, belonging to the field of composite pipe production technology. It includes: a mounting frame with a central hole for the pipe to pass through; a drive mechanism mounted on the mounting frame; a front wire feeding mechanism and a rear wire feeding mechanism, each including a turntable and at least one set of wire storage trays mounted on the turntable. The drive mechanism is simultaneously linked to both turntables and can drive both turntables to rotate. During this time, each of the wire storage trays performs a wire feeding action, and the steel wire is guided to the surface of the pipe. As the pipe continues to move forward, the synchronous wire feeding of the wire storage trays and the configuration of the left and right winding devices form a steel wire mesh composite reinforcement layer. By setting the front and rear wire feeding mechanisms on the front and rear sides of the mounting frame respectively, the weight of the winding device is evenly distributed on both sides of the mounting frame, forming a force balance state and increasing the load-bearing capacity of the turntable, avoiding the requirement for extremely high overall structural strength due to unilateral force.

The invention relates to the technical field of unmanned equipment, and provides an anomaly detection method and device, unmanned equipment and a storage medium, a throwing disc is driven to swing from a reference position to one side, when the throwing disc swings to a buffer assembly to achieve force balance, the swinging speed of the throwing disc is obtained, and a throwing disc sowing mechanism is judged based on the swinging angle; therefore, the abnormity detection of the throwing disc sowing mechanism can be automatically completed without dismounting any structural member, the problems that the manual maintenance efficiency is low and the accuracy cannot be guaranteed are solved, and the problems that the sowing operation efficiency of unmanned equipment is influenced and even the sowing operation cannot be carried out due to the abnormity of the throwing disc sowing mechanism are effectively avoided.

This invention discloses a force balance control method for a six-dimensional active cellular micro-force sensor. The micro-force sensor includes a probe, a moving platform, a base, and six measurement branches connecting the moving platform and the base. Each measurement branch consists of a flexible beam, a sensing layer, and a driving layer. The method includes: when the probe at the end of the micro-force sensor is subjected to an external measuring force, the flexible beam deforms accordingly; the real-time pose of the moving platform is measured by the sensing layer of each measurement branch; the difference between the real-time pose and the desired zero pose is used to obtain an error signal, which is then fed into a robust sliding mode predictive controller to generate a corresponding control law; the control law then passes through a damping compensator and a decoupler to obtain a control input voltage signal, which is applied to the driving layer. Under the voltage, the driving layer undergoes bending deformation, causing the moving platform pose to return to the desired equilibrium position. This invention effectively solves the problem of complex lumped interference and achieves the goal of fast response, strong robustness, and high stability force balance control.

The invention provides an adjustable support. The adjustable support comprises a base, a force application part and a balance assembly, the balance assembly comprises a plurality of elastic parts and a transmission mechanism, the transmission mechanism is functionally coupled to the base and can move relative to the base, the elastic parts comprise the first elastic part and the second elastic part, and the force application part is used for applying force to the first elastic part. Each of the plurality of elastic pieces can apply a corresponding elastic acting force to the transmission mechanism; the force applying piece can apply load acting force to the transmission mechanism, and when the force applying piece is operated, the force applying piece or the elastic pieces drive the transmission mechanism to move to a target position; when the transmission mechanism is located at the target position, the elastic acting force and the load acting force are balanced, so that the transmission mechanism and the force application piece are in a stress balance state. The adjustable support can solve the problems that a constant force elastic assembly of an existing adjustable support is large in size, large in occupied space and high in cost.

This invention discloses a rope-connected parallel support device and testing system for wind tunnel dynamic testing of a rotating projectile model. The support device includes a support assembly and a traction assembly. The rotating projectile model consists of a front part and a rear part connected as a single unit via connectors. The front end of a force balance in the support assembly is rotatably connected to the rotating projectile model via a front conical sleeve and a first bearing. The rear end of the force balance is connected to a reverse-locking sleeve via a rear conical sleeve and a second bearing. The reverse-locking sleeve is then connected to the front traction component, while the rear conical sleeve is connected to the tail support component. This support device uses the traction assembly to pull the front traction component and tail support rod of the rotating projectile model, controlling the extension and retraction of the traction cable. The rotating projectile model can achieve multi-angle coupled motions of precession, nutation, and spin.

This invention discloses a multi-section strain balance assembly integrated into an object, belonging to the field of hydrodynamic testing force measurement technology. It addresses the problems of traditional force balances, such as the need to disassemble the test model, numerous connection points, large installation errors, limited available force measurement sections, susceptibility to flow field interference, and difficulty in accurately measuring strain in thick-walled models. The balance assembly uses a hollow cylindrical section as the main body of the test substrate, with multiple sets of force measurement sections spaced along the substrate's axial direction. Each force measurement section is formed by thinning and slotting / perforating the inner and outer surfaces of the substrate to create load-bearing columns. Strain gauges for acquiring strain signals are attached to the inner and outer surfaces of these columns, enabling multi-dimensional force load measurement. The force measurement sections and the test substrate are integrally formed, allowing for flexible adjustment of the number of load-bearing columns. A single set of force measurement sections can be used independently as a multi-dimensional force balance. This invention achieves simultaneous multi-section force measurement without compromising the integrity of the model, balancing structural stiffness and force measurement sensitivity, significantly improving measurement accuracy, testing efficiency, and versatility.

The present application relates to hoisting equipment technical field, specifically, a kind of mould insert vertical pulling device of lateral component force, including pulley and steel wire rope, it is characterized in that: the steel wire rope passes through pulley, pulley below is equipped with component force balance adjusting mechanism, the component force balance adjusting mechanism includes vertical rope and natural correction mark of drooping.Compared with prior art, through vertical rope and correction mark, the hoisting angle of crane can be calibrated, and the influence of lateral component force on hoisting piece when hoisting can be effectively reduced.

The invention discloses a high-precision iteration method for load distribution of a bearing rolling body based on clearance coupling. The method comprises the following steps: (1) establishing a force balance model of a bearing by considering the influence of the clearance on the bearing range of the rolling body; (2) establishing a nonlinear contact mapping relation between the elastic deformation of the rolling body and the load; (3) introducing a load distribution integral operator to construct a high-precision iterative calculation process of rolling body load distribution; (4) iteratively solving the maximum rolling body load and the load distribution condition by adopting a step-by-step correction strategy until a preset precision requirement is met; the method has the beneficial effects that the non-uniform load distribution of each rolling body of the bearing can be accurately calculated when the clearance exists, and a high-precision load boundary condition is provided for dynamic characteristic analysis and performance optimization of the bearing.

The application discloses a workpiece clamping force balance regulation method and device, and relates to the technical field of machine tool control. The method comprises the following steps: connecting a control terminal of a shaping machining machine tool, outputting machine tool cutter control parameters and a machining reference surface; uniformly constraining the clamping force of a machine tool clamping component, outputting multiple groups of candidate clamping parameters; optimizing the multiple groups of candidate clamping parameters, generating multiple groups of optimized candidate clamping parameters; determining a preset vibration characteristic threshold of a workpiece to be shaped; simulating the vibration of the workpiece during machining, taking the preset vibration characteristic threshold as a constraint, screening the multiple groups of optimized candidate clamping parameters, generating optimal clamping parameters, and controlling the machine tool clamping component. The technical problem that the machining precision is reduced due to unstable clamping during the shaping machining process of the prior art is solved, the clamping component is accurately controlled, and the technical effect of improving the machining precision is achieved.

The application discloses a micro-optical accelerometer with force balance feedback, which is composed of a MEMS sensitive unit, a grating unit, a detection unit and a plurality of packaging ceramic substrates, and is integrally packaged in a metal tube shell through wire bonding. The MEMS sensitive unit is composed of a plurality of spring-mass structures with a mirror and a lower metal electrode. The grating unit is composed of a plurality of triangularly distributed gratings with an upper metal electrode. The detection unit is composed of three triangularly distributed light transceiver assemblies. One light transceiver assembly contains a VCSEL laser and two PD detector chips. The plurality of packaging ceramic substrates assemble the units together according to the required interval, and the upper surface is distributed with metal pads to realize electrical connection with the outside. The application integrates the electrostatic force feedback function and a plurality of light transceiver assemblies. The micro-optical accelerometer can work in multiple modes, effectively suppresses cross-axis crosstalk, and realizes ultra-high precision acceleration measurement.

The invention relates to a flight control actuation control system with a force limiting function, and the system comprises a main flight control law calculation module which is used for determining an actuator control instruction according to a flight control law algorithm; the force limiting function module is used for determining a force limiting compensation instruction based on the pressure difference of the two cavities of each actuator and the target limiting force, and the force fighting balancing module is used for determining a force fighting balancing compensation instruction used for balancing the difference value of the output force of each actuator based on the pressure signal of each actuator; wherein the flight control actuation control system is implemented in a flight control computer (FCM) to adjust actuator control instructions determined by the primary flight control law calculation module based on force limit compensation instructions to complete global force balancing before the actuator control instructions are output to actuator control electronics (ACE). Other aspects of the disclosure also include a flight control actuation control method with a force limiting function.

The discharging and grabbing device for the 3D printing workpiece is applied to grabbing and releasing procedures in the process of moving a finished product to a fixed station after the large-size 3D printing workpiece is completed, reliable clamping and releasing are required, and the effects of reducing vibration and keeping the balance of a material disc can be achieved in the moving process. The grabbing device is composed of a transverse moving mechanism, a transverse support, a force balance mechanism and a clamping mechanism. The clamping mechanism is used for clamping a material disc for containing finished workpieces. The force balance mechanism balances the counter-acting force in the clamping process and plays roles in balancing the charging tray and reducing vibration at the same time; the transverse support serves as the basis of the clamping mechanism and the force balance mechanism, and the clamping mechanism, the force balance mechanism and the transverse support are connected into a whole and can transversely move to achieve the transverse clamping function on a material disc. The transverse moving mechanism can drive the two transverse supports to be opened or clamped synchronously, and the function of clamping the material disc is achieved.

This invention relates to a structural design method for angular contact ball bearings with low vibration and high rotational accuracy, comprising the following steps: S1, obtaining the structural parameters, operating parameters, and lubrication conditions of the angular contact ball bearing rotor system; S2, applying external force vectors to the rotor, and establishing the dynamic equations of the bearing rotor system based on the principles of torque balance and force balance; S3, obtaining the dynamic equations of the bearing inner ring, rolling elements, and cage; S4, establishing a dynamic model of the bearing-rotor system, solving the bearing-rotor system, calculating the dynamic behavior of the bearing-rotor system, and simultaneously obtaining the vibration and rotational accuracy of the system; S5, obtaining the variation law of the vibration and rotational accuracy of the bearing-rotor system, and determining the structural dimensions of the bearing with low vibration and high rotational accuracy. This invention can design the structural dimensions of angular contact ball bearings with low vibration and high rotational accuracy by predicting the vibration and rotational accuracy of the bearing rotor system based on the bearing rotor dynamic model.

The utility model discloses a kind of multi-section mould force balance control's sole mould, it is related to shoe mould relevant field, comprising: upper mould lower end four corners are movably connected with lower mould by pneumatic push rod, lower mould lower end is installed in the top surface middle part of bearing seat by positioning bolt, offset detection mechanism is set to monitor the state of convenience of mould side, by being slidably connected in the right side inner side of second installation arch plate with second pressure sensor, so that mould when offset, second pressure sensor is buffered with second installation arch plate while effectively collecting data, to avoid second pressure sensor from being seriously damaged, by positioning bolt and positioning groove, mould is centrally positioned in the top surface of bearing seat, and then the bottom four corners pressure of mould is monitored by cooperating with the multiple groups of first pressure sensor of array setting, and then the mould top surface four corners mould force balance of synchronous regulation oil pressure system is balanced, reduce the occurrence of mould offset.

The utility model relates to the technical field of bridge construction large-tonnage support monitoring, in particular to a cantilever construction large-tonnage support counter-force balance state on-line monitoring device which comprises a support balance monitoring assembly and a signal receiving terminal. The four corners of the beam body and the four corners of the abutment are all provided with inward concave corners, and the inner sides of the inward concave corners are provided with fixing lug plates. According to the utility model, the four groups of gravity sensors are arranged, so that the external load borne by the support can be monitored in real time, and the external load comprises the magnitude, the direction and the action point of the force; on the basis of the balance principle of applied force (that is, the resultant force of the support in the direction of the external load must be zero, and the algebraic sum of all forces in the vertical direction must be zero), when the detection values of the four groups of gravity sensors are not uniform or deviate from a correct value interval, the gravity sensor is started; and the information is transmitted to a worker through the signal receiving terminal for on-site inspection.

The utility model relates to a hand brake device for tracked vehicle and tracked vehicle are provided. The hand brake device for tracked vehicle includes support structure, brake lever, brake disc, brake lever structure, linkage bending rod and elastic linkage assembly. When the hand brake device for tracked vehicle is in the brake state, the linkage part is located at the second side, one end of the linkage bending rod connected with the linkage part is located at the second side, the other end is located at the first side, the linkage bending rod and brake lever structure cooperate with each other at this time, make between both a force balance state, to ensure that the linkage bending rod always provides an end -to -end force to the elastic linkage assembly, the linkage bending rod does not descend towards the direction of the bottom end, makes the whole brake state of tracked vehicle stable and reliable, reduces the probability of tracked vehicle brake parking and the like after the occurrence, improves the brake safety of tracked vehicle.

The application discloses a kind of construction site multifunctional construction hoist, belong to construction technology field, including guide rail frame, the inside embedded connection of guide rail frame has construction hoisting assembly, the hanging basket embedded connection in the inside of guide rail frame of construction hoisting assembly, the bottom embedded connection of inside of hanging basket has inner lining fender, the two side end surfaces of inner lining fender are all set up hydraulic groove, guide rail walking assembly is sleeved in the hydraulic groove.In the application, hydraulic shaft in hydraulic groove does extension movement, hydraulic shaft exerts thrust to lever frame, under the action of thrust, two guide wheels on the lever frame move to the direction of guide rail frame, so as to be able to play the role of correction to hanging basket, make the force balance between corrected hanging basket and the two guide rail surfaces in the inside of guide rail frame, improve the balance degree of hanging basket, prevent hanging basket from producing abnormal friction to the guide rail surface in the inside of guide rail frame in lifting, improve the stability when using hoist.