287 results about "Force balance" patented technology

The utility model provides a shower. The shower comprises a supporting and fixing pipe, a force balance mechanism and a movable water outlet part, a water outlet device is arranged on the movable water outlet part, the movable water outlet part comprises a water passing channel connected with the water outlet device, the movable water outlet part is configured to move on the supporting and fixing pipe at least in the height direction, and the force balance mechanism is configured to at least partially offset the gravity of the movable water outlet part; the movable water outlet part comprises a shell and a water passing part communicated with the water outlet device, and the water passing part is arranged in the shell; the shell at least sleeves and slides outside part of the supporting and fixing pipe; the shell comprises a fixed plate; the shell further comprises a supporting arm, one end of the supporting arm is fixedly connected with the upper end of the fixing plate, and the other end of the supporting arm is fixedly connected with the water outlet device. By the adoption of the technical scheme, the adjusting hand feeling is good, and height positioning of the water outlet device is achieved without an additional fixing and positioning component.

The invention provides a flexible device between double push rods and a push bucket, a synchronous regulation and control method of the double push rods and a dung pushing truck, and belongs to the technical field of pushing devices.The flexible device comprises an elastic pressed position covering part which can be elastically pressed and contracted; the first double-end connecting rod penetrates through the elastic pressed position covering piece to be rotationally arranged, and the first double-end connecting rod is rotationally connected with the push bucket; the position covering sleeve rod is connected with the elastic pressed position covering piece in a sliding and sleeving mode, and the position covering sleeve rod is connected with the push rod; the second double-end connecting rod penetrates through the covering sleeve rod and is rotationally arranged; the elastic tension complementing pieces can be elastically tensioned and lengthened, and the elastic tension complementing pieces are located on the two sides of the elastic compression complementing piece; and one end of the elastic pulled position covering piece is rotationally connected with the first double-end connecting rod, and the other end is rotationally connected with the second double-end connecting rod. The phenomenon that the connecting position of the flexible device and the connecting position of the flexible device and the push bucket are unbalanced in stress is greatly reduced, the flexible device and the push bucket are in a stress balance state all the time, and loads of all components are avoided.

The utility model belongs to the technical field of electronic balances, and particularly relates to an improved structure of an electromagnetic force balancing device for an electronic balance, which comprises a stand column assembly vertically arranged in the electromagnetic force balancing device, the stand column assembly comprises an outer column body and an inner column body fixedly arranged in the outer column body, and a damping ring is sleeved outside the outer column body. A plurality of stress buffering grooves are vertically formed in the surface of the outer column body. According to the utility model, the durability of the permanent magnet is improved, the possibility of demagnetization of the permanent magnet is greatly reduced, the influence of uncertainty in the measurement process of the electronic balance is further reduced, and the accuracy and reliability of the measurement result are ensured.

The double-hydraulic-cylinder type clamping device comprises a clamping head, a cylinder body is arranged below the clamping head, an upper end cover and a lower end cover are fixed to the upper end and the lower end of the cylinder body respectively, and the upper end cover is fixedly connected with the lower end of the clamping head; an upper clamping driving mechanism, a self-adaptive force balance mechanism, a lower clamping driving mechanism, an isolation plate and a self-locking mechanism are sequentially arranged in the cylinder body from top to bottom, an upper end cover of the upper clamping driving mechanism extends into the clamping head and is in sliding connection with the upper end cover, and the lower end of the lower clamping driving mechanism sequentially penetrates through the isolation plate and the self-locking mechanism; a hydraulic port E is formed in the corresponding side wall of the cylinder body between the self-locking mechanism and the isolation plate, a hydraulic port F is formed in the corresponding side wall of the cylinder body between the self-locking mechanism and the lower end cover, and a mounting guide rod M is fixedly mounted on the outer side wall of the lower end cover. The problem that in the prior art, a rigid connector of underwater equipment is affected by sea waves, water flow and a mud surface for a long time, so that connection is loosened, separation and sealing leakage are caused, and the operation process is interrupted is solved.

The invention provides a steel structure splicing type installation method, and belongs to the technical field of steel structure construction.The method includes the steps that firstly, based on a three-dimensional design drawing, a structure map is established, and node coordinates and connection relations are identified; carrying out bearing capacity partitioning through a minimum spanning tree algorithm, and calculating a bearing capacity gravity center; carrying out stability partitioning, calculating a mass gravity center, and carrying out correlation analysis on the mass gravity center and a bearing capacity gravity center; calculating an optimal splicing sequence based on an elastic mechanical equilibrium equation, and establishing a splicing process diagram; installing a first reference node according to the process diagram, and establishing a coordinate system; connecting pieces are installed in sequence, and center-of-gravity deviation detection is carried out; when the structure reaches a critical state, carrying out overall stress measurement and adjusting node parameters; and finally, all splicing is completed, the geometric dimension and stress distribution are verified, and the problems of stability and stress balance existing in a traditional method are solved.

The invention relates to the technical field of stacker-reclaimers, in particular to a bucket-wheel stacker-reclaimer grounding force detection method, which comprises the following steps of: pitching a cantilever beam to the highest point, releasing redundant back pressure of a hydraulic oil cylinder, detecting a pressure value of a rod cavity through a pressure measuring point on the hydraulic oil cylinder, and recording data; pitching the cantilever beam to the lowest point, releasing redundant back pressure of the hydraulic oil cylinder, detecting a pressure value of a rodless cavity through a pressure measuring point on the hydraulic oil cylinder, and recording data; comparing the measured pressure value with a rated pressure value of the hydraulic oil cylinder; if the pressure values of the two cavities are both within the rated pressure range of the hydraulic oil cylinder and the two cavities have 30% of allowance, the grounding force balance of the whole machine is considered to be qualified, and detection is ended; if the pressure value of one cavity is within the range of the rated pressure value of the hydraulic oil cylinder, but the allowance is less than 30%, the grounding force balance of the whole machine is judged to be unqualified, the balancing weight is adjusted, detection is performed again after adjustment, the detection method is relatively simple, and the balance of the whole machine is avoided after the balance weight is adjusted.

The invention relates to the technical field of bearing retainers, and discloses a wind power bearing axial retainer structure which comprises a plurality of axial retainer units, and each axial retainer unit is integrally arranged in an arc shape so that a whole circle structure can be defined by the multiple axial retainer units. Each retainer unit comprises an inner flange, an outer flange and a connecting beam connected between the flanges, and each connecting beam comprises edge beams connected with the ends of the two flanges and a lintel between the edge beams; the upper side and the lower side of each lintel are each provided with a first limiting part with the opposite extending direction so as to limit the corresponding roller. A first limiting part is arranged on the corresponding side of each edge beam, a second limiting part is arranged on the other side of each edge beam, and protruding parts are arranged on the sides, away from each other, of the two flanges to improve the strength of the flanges; according to the wind power bearing retainer unit structure, stress balance of the upper side and the lower side of the retainer can be achieved, the stability of the retainer is improved through surface contact of the left side face and the right side face of the retainer, the strength is improved by arranging the protruding parts on the front side and the rear side of the retainer, and the fracture risk of the retainer is reduced.

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.

An emergency autoland braking system for aircraft includes an electromechanical actuator configured to provide a braking force to rudder pedals for actuating a braking system without altering the existing braking system of the aircraft. An equalized braking force may be applied to both rudder pedals via a force balancing mechanism and a single linear actuator, or differential braking force may be applied via independent linear actuators. The system is compatible with both open and closed loop control for commanding a braking force.

The invention discloses a spring module, a force balancing device, a force balancing system and a medical auxiliary system. The spring module comprises a guide rail, a plurality of spiral springs and at least one rotating pair. The multiple spiral springs are connected in series parallel to the guide rail. The rotating pairs are movably connected to the guide rails, every two adjacent spiral springs are connected through one rotating pair, and the rotating axes of the rotating pairs coincide with the axes of the spiral springs. According to the application, a plurality of spiral springs are connected in series to form a long spring, and the long spring stretches under the guidance of the revolute pair, so that the spring can be prevented from bending. The two opposite ends of every two adjacent spiral springs can generate relative rotating motion through the corresponding rotating pair, it is guaranteed that the two ends of each spiral spring have the relative rotating freedom degree, and the spiral springs can stretch out and draw back in the track close to the theory.

The invention relates to the technical field of interbody fusion cages, in particular to an expansion type interbody fusion cage. Comprising a fusion cage body, and expansion blocks are installed at the upper end and the lower end of the fusion cage body; the fusion cage body comprises a front end head and a rear end head; by arranging the combined frame, the steel wire rope and the abutting spring, when the winding unit winds the steel wire rope on one side, the steel wire rope can pull the front end to be close to the rear end, so that the distance between the front end and the rear end is reduced, and the combined frame on the side where the stretched steel wire rope is located extrudes the abutting spring to be close to each other; the combined frame is bent towards the side where the stretched steel wire rope is located, so that the geometrical shape of the overall structure of the fusion cage body naturally tends to form an arc shape under the action of pulling force, and force balance is achieved; the angle and position of the fusion cage can be conveniently adjusted by a doctor, the attachment between the fusion cage and the vertebral body of a patient is enhanced, the replacement requirement of the fusion cage is reduced, the operation time is shortened, and the postoperative recovery effect of the patient is 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 force balancing device, a force balancing system and a surgical robot. A force balancing device for an apparatus having a rotational joint comprising a first part and a second part rotatable relative to the first part about a first axis of rotation. The force balancing device comprises an output mechanism and a linkage mechanism. The output mechanism is used for providing output force so as to compensate the torque of the bias force on the second part relative to the first rotating axis. The traction mechanism comprises a first connecting part, a second connecting part and a third connecting part connected with the first connecting part and the second connecting part, the first connecting part and the second connecting part are used for being connected with an output mechanism, and the first connecting part can apply first torque to the third connecting part under the action of output force; the second connecting part can apply second torque to the third connecting part under the action of the output force, the first torque and the second torque are opposite in direction, and the third connecting part is used for being connected with a second component, so that the first torque and the second torque can be transmitted to the second component.

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 present invention discloses a calculation method for the internal force and deformation response of the entire bridge when the lateral distributed live load acts on the main girder of a suspension bridge. First, based on the known dead load state of the suspension bridge, the independent basic unknowns representing the key geometric forms and internal force parameters of the entire bridge are determined. Then, the responses of the main cable, main girder, bridge tower, and suspender are expressed in terms of the basic unknowns. Subsequently, according to the conditions of geometric compatibility, conservation of stress-free length, force balance, etc., control equations equal in number to the basic unknowns are listed. Finally, the unknowns are solved by the method of nonlinear programming, and the response of the entire bridge can be obtained. This method completely abandons the assumption in the traditional method that the suspenders are regarded as continuous membranes, and innovatively takes into account the effects of the following factors: longitudinal bending of the bridge tower, torsion of the bridge tower, elongation and inclination of the suspenders, longitudinal rigid body displacement of the main girder, etc., which is more in line with the actual stress state of the suspension bridge. The physical meaning of this method is clear, and the results can be obtained by adjusting several key parameters, which is convenient and fast.

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;

The utility model belongs to the field of slope construction of water conservancy dam bodies, and discloses a tamping machine for slope construction of a water conservancy dam body, which comprises a main machine device for hammering and leveling the slope of the water conservancy dam body, and an auxiliary device for supporting and assisting movement along the slope of the water conservancy dam body, one side of the auxiliary device is provided with a limiting device used for moving along the top face of the water conservancy dam body for auxiliary positioning. The host device is installed in the middle of the auxiliary device. The auxiliary device comprises a supporting assembly, four rollers are evenly installed at the four corners of the bottom of the supporting assembly, and a connecting ring is arranged on one side of the supporting assembly. The limiting device comprises a walking assembly, a weight box is installed on the walking assembly, and a pulling assembly is arranged in front of the weight box. According to the tamping machine for construction of the slope of the water conservancy dam body, due to the arrangement of steel cable pulling and auxiliary positioning, stress balance is increased, rollover is avoided, and the stability of tamping operation is improved; and the position is longitudinally adjusted along the slope of the water conservancy dam body through pulling of the steel cable, so that the tamping positioning accuracy is improved.

The invention relates to the technical field of bridge engineering, and discloses a multi-dimensional damping wind-resistant modernized road and bridge device which comprises a bridge body, a wind-resistant groove formed in the bottom of the bridge body, a mounting part mounted outside the wind-resistant groove and used for mounting a wind-resistant tool, and a dynamic balance part mounted on the mounting part and used for mounting the wind-resistant tool. A dynamic balance part in the device can conduct self-adaptive adjustment according to the multi-dimensional wind direction, and when the device faces crosswind, an arc surface structure at the bottom of a windward plate generates upward thrust under the action of wind power and turns over with a rotating shaft as the axis to drive a balance arm to change the included angle between the balance arm and the bridge body; when an included angle is formed between the wind direction and the bridge body, the swing blades are under the action of wind power, the balance arms are driven to turn over on the round sleeves, the gravity center of the bridge body is adjusted, the stress stability is enhanced, the wind load in the complex wind direction is effectively dealt with, and the wind resistance of the bridge is 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.

Force balancing can be implemented for actuators (660) of an electric power machine (600). A method may include receiving a command for movement of a work element (655) using a first electric actuator and a second electric actuator of the electric power machine (600) and determining a target electric current based on the command for movement. The method may also include controlling the movement of the work element (655) based on the target electric current, including providing substantially equal electric current to each of the first and second electric actuators to substantially balance forces exerted by the first and second electric actuators on the work element (655).

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 utility model discloses a shaft end force balancing structure which comprises a pump body, a first pump cover, a second pump cover, an impeller, a driving part, a first mechanical seal, a second mechanical seal, a first flushing pipeline and a second flushing pipeline. A first mechanical seal is connected between the driving piece and the impeller; the second output end of the driving part is connected with the second mechanical seal; a first vent hole is formed in the first pump cover and communicates with the first mechanical seal; a second vent hole is formed in the second pump cover and is communicated with the second mechanical seal; one end of the first flushing pipeline is communicated with the first vent hole, and the other end is communicated with the second vent hole; one end of the second flushing pipeline communicates with the second vent hole, and the other end of the second flushing pipeline communicates with the liquid inlet. The technical effects of balancing shaft end stress and reducing shaft end force generated by the main shaft are achieved, vibration and noise can be reduced, the stability of mechanical equipment is improved, and the service life of the mechanical equipment is prolonged.

The invention provides a wafer bearing device and semiconductor processing equipment, and relates to the technical field of semiconductor equipment, and the wafer bearing device comprises a wafer base station which is provided with a plurality of base station through holes in the thickness direction; the supporting frame is arranged below the wafer base station, and a reserved space is formed between the inner peripheral walls of the supporting frame; the lifting mechanism comprises a plurality of lifting assemblies, and the lifting assemblies are in one-to-one correspondence with the base station through holes; one end of each lifting assembly is connected to the supporting frame, and the other end of each lifting assembly extends into the corresponding base station through hole; the driving guide mechanism is arranged between the supporting frame and the wafer base station, and the driving guide mechanism comprises a driving assembly and at least one guide assembly; the driving assemblies and the guiding assemblies are evenly distributed in the same circumferential direction of the supporting frame. The driving guide mechanism forms a circumferential force balance system through the uniform distribution of the driving assembly and the guide assembly, and effectively avoids the inclination and shaking phenomena generated in the lifting process of the support frame, thereby guaranteeing the verticality and stability of wafer lifting.

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.