108 results about "Balance body" patented technology

The invention provides a repairable self-balancing multi-stage pump, which relates to the technical field of multi-stage pumps, and comprises a pump body, a rotor structure, a first bearing assembly and a second bearing assembly, at the position of the water outlet section, the pump body is provided with a first annular support and a second annular support; a balance body is arranged on the rotor structure; the first support wraps the balance body, and a first gap is formed between the first support and the balance body. The second support is arranged on the side, away from the multi-stage impeller, of the balance body, and a second gap is formed between the second support and the balance body. The first gap and the second gap form gap sealing; the rotor structure can adjust the assembling position in the axial direction so as to adjust the size of the first gap and the size of the second gap. The assembling position of the second support can be adjusted in the axial direction so that the size of the second gap can be adjusted; and the first support is kept fixed. In the maintenance process, different abrasion compensation amounts can be applied to the first gap and the second gap, and the maintainability of the multi-stage pump is further improved.

The invention relates to a floating double-powder-chamber balance gun structure which comprises a front body tube, a first powder chamber, a second powder chamber, bullets, a balance body and a rear body tube. The front body tube is a motion section of the projectile; the first powder chamber is used for filling a first main charge; the second powder chamber clings to the balance body and is used for filling a second main charge; the projectile is a main launcher; and the balance body is used for balancing recoil force generated by launching the projectile. Compared with the prior art, through the arrangement of the first powder chamber and the second powder chamber, the initial running speed of the projectile is increased on the premise that the maximum in-chamber pressure of the balance gun is not increased; according to the invention, simple structure and principle are applied, the problem of high bore pressure caused by high initial velocity index of a large-diameter barrel weapon can be solved, safe test launching of the barrel weapon is realized, and the test device provided by the invention is simple in structure, simple to operate, safe, reliable, economical and practical.

According to the dynamic clamping method and system of the industrial robot, the clamping grade of a workpiece is defined according to the load degree of the workpiece in all the direction dimensions and the model of the workpiece, the accuracy of the load degree of the workpiece in all the direction dimensions is guaranteed, and then the accuracy of the clamping grade of the workpiece is guaranteed. Further, when the industrial robot moves dynamically, a posture balance system is constructed according to the shaking amount of the clamping arm, the real-time posture of the clamping arm and the real-time posture of the workpiece; the clamping arm and the workpiece are dynamically balanced based on a posture balance system, the position offset of each clamping point is collected, the sliding amount of the workpiece is defined based on the position offset of each clamping point and the surface coefficient of the workpiece, if the sliding amount of the workpiece is larger than a preset sliding amount threshold value, the clamping arm is triggered to lift the bottom of the workpiece, and the workpiece is clamped. Therefore, the clamping arm dynamically clamps the workpiece in multiple dimensions, and the dynamic clamping effect and clamping stability of the workpiece are improved.

The invention discloses a breathing regulator, which relates to the field of breathing regulators, including inner and outer connecting wires, a valve body, a valve body fixing nut and an adjusting knob which are connected in sequence. The valve body is provided with a movable connecting lever, a breathing valve body is provided between the inner and outer connecting wires and the valve body fixing nut, the valve body is located inside the breathing valve body, and the lever is movably connected to the inner wall of the rear side of the breathing valve body, an adjusting nut is provided in the valve body fixing nut, one end of the adjusting nut is connected to the adjusting knob, and an embedded sphere is provided at the center of the other end face, a pull rod, a balancing body, an inner spring and a balancing pad are provided in sequence in the valve body, a pull rod spring, a lever and a nut are provided in sequence on the pull rod, an outer spring is provided on the outer side of the inner spring, and a balancing pad groove which matches the embedded sphere is provided on the other end face of the balancing pad. The application has a simple structure, small resistance and small friction, which ensures the accuracy of the product and sufficient and smooth gas volume, and reduces friction and prolongs the service life of the product through friction between the embedded sphere and the spherical surface of the balancing pad groove.

The invention belongs to the technical field of rail transit, and provides a train air spring active tilting system which is mainly characterized in that a displacement signal and an active tilting angle of a balance body in a balance sensor are acquired, and a controller judges whether a train is in a straight road section or a curve road section according to the displacement signal; if yes, a first current signal is output to the active tilting valve, at the moment, the active tilting valve is controlled to inflate an air spring on one side and perform active tilting, and in the active tilting process, the controller outputs a second current signal to the corresponding electromagnetic flow control valve according to the active tilting angle and controls the opening degree of the switched-on electromagnetic flow control valve to control the electromagnetic flow control valve to perform active tilting. The inflation flow is controlled; when the train is in a straight road section or the active tilting system breaks down, the first current signal is not output to the active tilting valve, at the moment, the air springs on the two sides are in the original working state, and the air pressure difference of the air springs on the two sides is maintained within a certain range.

This invention relates to a distributed intelligent wireless balance, belonging to the field of wind tunnel balance measurement technology. It addresses the problem of intelligent measurement in wind tunnel balances. The invention features connectors installed at the center of the left and right end faces of the balance body, and strain gauge protective covers installed at the left and right ends of the balance body. The strain gauges are mounted on the balance body, located below the strain gauge protective covers. A main control module is installed in the middle of the balance body, and a circuit board protective cover is mounted on the main control module. The main control module is connected via an RS-485 bus to a vibration sensor, an angle sensor, a data acquisition module, and a temperature sensor mounted on the balance body. The vibration sensor and angle sensor are respectively located to the left and right of the main control module, the temperature sensor is located below the main control module, and the data acquisition module is located below the vibration sensor and angle sensor, respectively. This invention significantly improves the intelligence level of the balance.

The utility model relates to the field of electronic balances, in particular to a dustproof balance which comprises a balance body, sliding grooves are arranged on two sides of the front end and the rear end of the top of the balance body, sliding blocks are arranged in the sliding grooves, a first protective cover is arranged on the two sliding blocks at one end of the top of the balance body, and a second protective cover is arranged on the other end of the top of the balance body. The first protective cover and the second protective cover are in the same half-frame shape, and the first protective cover and the second protective cover can be combined to form an integral square-frame-shaped protective cover which can cover the top of the balance body. The sliding blocks are arranged below the two half-frame protective covers, the sliding blocks drive the half-frame protective covers to move left and right to achieve opening and closing of the protective covers, and therefore a cover plate does not need to be arranged, the protective covers can be prevented from being attached to stains on a table top, and analysis is prevented from being affected.

The utility model provides a counterweight balance block, a scroll compressor assembly and a vehicle-mounted air conditioning system, and relates to the field of compressors. The counterweight balance block comprises a boss and a balance body which are connected, the boss is provided with a fixing hole for the eccentric pin to be inserted, and a distance is formed between the axis of the fixing hole and the axis of the boss; the balance body is provided with an assembling groove, the groove wall of the assembling groove is arranged to be an arc-shaped assembling face, and the arc-shaped assembling face is provided with a force transmission part and a chip removal part. And the assembling groove is used for inserting the motor shaft, so that a gap is formed between the chip removal part and the outer peripheral surface of the motor shaft while the force transmission part is in contact with the outer peripheral surface of the motor shaft. According to the structure, the transmission path of the scroll compressor assembly is changed, so that in the steady-state operation process of the scroll compressor assembly, supporting force does not exist between the movable scroll plate assembly and the anti-rotation pin, the problem that the anti-rotation pin is loosened due to alternating external force is effectively solved, and for a whole compressor, the anti-rotation pin is prevented from falling off due to the fact that exciting force does not exist. And the vibration and noise effects of the compressor can be effectively improved.

The invention relates to the technical field of logistics transportation equipment, in particular to a transport vehicle adaptive to all terrains, which comprises a vehicle body, a main crawler wheel mounted at the bottom of the vehicle body, a first auxiliary crawler wheel mounted at one end of the main crawler wheel of the vehicle body, and a second auxiliary crawler wheel mounted at the other end of the main crawler wheel of the vehicle body, the main crawler wheel, the first auxiliary crawler wheel and the second auxiliary crawler wheel are all driven by a hydraulic motor; the balance body is movably installed in an inner cavity of the vehicle body, a cylindrical groove is formed in the side wall of the vehicle body, and the balance body and the cylindrical groove are coaxially arranged; the tray is mounted on the balance body, and when the vehicle body climbs stairs, the tray can rotate along with the balance body to adjust the center-of-gravity position of the whole transport vehicle, so that the transport vehicle is more stable in the stair climbing process; according to the scheme, the design that the main crawler wheel is cooperatively matched with the first auxiliary crawler wheel and the second auxiliary crawler wheel is innovatively adopted, the terrain limitation is successfully broken through, and complex road conditions such as stairs and rugged mountain roads can be easily handled.

The utility model relates to a rotor balance block and a motor and a compressor with the same, the rotor balance block comprises an arc-shaped balance body, one side surface of the balance body is a step-shaped windward side, and the other side surface of the balance body is a step-shaped leeward side; the inner diameter face of the balance body is an inclined face, the inner diameter face of the balance body inclines in the direction away from the outer diameter face of the balance body from top to bottom, and the included angle alpha between the inner diameter face and the lower end face of the balance body is larger than 10 degrees and smaller than 90 degrees. According to the rotor balance block, the inner diameter surface adopts the inclined design, vertically upward fluid at the inner diameter can be reduced, the oil spitting direction is improved so as to reduce the oil spitting amount, and the windward surface and the leeward surface both adopt the inclined design, so that wind resistance and fluid noise can be reduced.

The present invention relates to a gas pressure reducing valve balancing module, comprising a balancer housing and a balancing membrane, wherein the bottom of the balancer housing penetrates and is slidably connected to a balancing body, the upper end face of the balancing body is fixedly connected to a convex rod, the lower end of the balancing body is threadedly connected to a main regulating valve, the outer ring edge of the balancing membrane overlaps the stepped surface inside the balancer housing and is pressed by the balancer inner shell, the inner ring edge of the balancing membrane overlaps the stepped surface formed by the convex rod and the balancing body and is fixed to the balancing body by an upper pressure pad; a channel 1 that passes through from top to bottom is provided at the center of the main regulating valve, a channel 2 is provided at the center of the balancing body, a side hole is provided on the side wall of the convex rod located above the balancing membrane, the upper end of the channel 2 is connected to the side hole, and the lower end is connected to the channel 1. This gas pressure reducing valve balancing module allows the airflow on the inlet side of the pipeline to enter the cavity on the upper side of the balancing membrane, thereby balancing the force of the inlet pressure on the main regulating valve, so that the main regulator can adapt to a wider range of inlet pressure changes and the pressure regulation is more stable.

The utility model relates to electronic balance technical field provides a stable platform for placing electronic balance, including the workbench of electronic balance placement and the bottom plate located below the workbench, and the workbench is arranged in parallel with the bottom plate, the workbench is established above the bottom plate through the support rod, and the bottom plate is equipped with the adjusting assembly for adjusting the levelness of the bottom plate, the utility model discloses adjusting the levelness of the bottom plate through adopting adjusting assembly, thereby the levelness of the workbench parallel with the bottom plate is calibrated, ensures that electronic balance is in the horizontal state and works, specifically, because the bottom end fixed mounting of threaded rod has the support plate, the bottom end fixed mounting of support plate has rubber shock pad, so the up and down movement of threaded rod will push the up and down movement of support plate and rubber shock pad, when the workbench is placed on the uneven ground, can adjust the threaded rod of different position, make the workbench reach the horizontal state, ensure that the balance body is measured on the horizontal plane, improve the accuracy of measurement result.

The utility model relates to the related technical field of electronic scales, in particular to a high-precision electronic scale, which comprises an electronic scale body, and a cover body is arranged at the top of the electronic scale body; the first supporting leg is fixedly connected to the bottom of the electronic balance body; the second supporting leg is connected into the first supporting leg in a sliding mode; the adjusting rod is rotationally connected to the bottom of the electronic balance body; the edge of the electronic balance body is manually pushed or pulled, the levelness of the electronic balance body is adjusted, after adjustment is completed, the adjusting rod is rotated anticlockwise, the height of the second supporting leg is subjected to extrusion limiting, limiting of the heights of the first supporting legs is canceled at the same time, and therefore the levelness of the electronic balance body is conveniently adjusted; according to the electronic balance, the adjusting efficiency can be improved through a simultaneous fixing mode, the cushion block can be in direct contact with the object carrying surface all the time through rotation of the cushion block on the ball body, the stability is improved, and the problem that an existing electronic balance does not have a good adjusting function is solved.

The present invention relates to a method for assisting the turning over of arch ribs by using a hoist and a cable crane, belonging to the technical field of long-span bridge construction. Through the partition optimization of the lifting point design, dynamic load distribution, hierarchical synchronous control and intelligent monitoring feedback, three types of lifting points with complementary functions are accurately configured according to the damage degree partition, so that the pressure is transmitted along the main path of the gusset plate, the bending moment is balanced by the sliding lifting points, and the tension is absorbed by the concrete, forming an internal force closed loop and a tension-compression self-balanced system; the nonlinear compensation of the sliding lifting points is realized through the displacement-angle function to ensure the bending moment balance of the lower chord pipe and the geometric coordination of the arch rib turning; a three-stage hierarchical control strategy is adopted to trigger the reverse torque, which not only ensures the structural stiffness requirements in each stage but also avoids stress mutation; the lossless conversion of the self-balanced system to the permanent structure is completed, systematically solving the problems in the prior art that the lifting point arrangement method not only causes potential damage risks to the structure but also leads to redundant lifting equipment capabilities.

The present invention discloses an intelligent suitcase, comprising a suitcase body, a power source, a self-balancing body arranged at the bottom of the suitcase body and a driving wheel, wherein the self-balancing body comprises a self-balancing control system for maintaining self-balancing relative to the driving wheel after power is supplied. The intelligent suitcase of the present invention is equipped with a self-balancing control system for maintaining self-balancing. The self-balancing control system can realize the self-balancing state of the intelligent suitcase after power is supplied.

The utility model discloses a weighing device convenient to clean, comprising an electronic balance body, the electronic balance body is provided with a scale pan, the upper end of the electronic balance body is provided with a chute, the chute is slidably provided with a support frame, the lower part of the support frame is fixedly connected with two groups of fixing plates, and the two groups of fixing plates are fixedly connected with the electronic balance body. A rotating rod is rotatably installed in the two sets of fixing plates, a cleaning brush is fixedly installed on the outer surface of the rotating rod, gears are fixedly connected to the two ends of the rotating rod, and toothed plates are engaged with the lower portions of the gears and fixedly installed on the upper surface of the electronic balance body. According to the utility model, the motor is matched with the threaded rod, the sliding block, the supporting frame, the fixed plate and the rotating rod to enable the cleaning brush to move on the electronic balance body, and the rotating rod is matched with the gear and the toothed plate to enable the cleaning brush to move and rotate at the same time, so that chemicals scattered on the electronic balance body and the weighing pan are cleaned; and the influence of scattered chemicals on the accuracy of the electronic balance body in next use is avoided.

The utility model relates to the technical field of wagon balances, and discloses an intelligent wagon balance which comprises a base, a hydraulic cylinder is arranged on the outer wall of the base, a pushing column is fixedly connected to the output end of the hydraulic cylinder, a transmission assembly is arranged on the outer wall of the pushing column, and idler wheels are rotationally connected to the outer wall of the transmission assembly. A top plate is arranged on the upper surfaces of the rollers, a bottom plate is fixedly connected to the upper surface of the top plate, and a detection assembly is fixedly connected to the upper surface of the bottom plate. According to the utility model, the hydraulic cylinder drives the pushing column to lift, the pushing column drives the rotating shaft to lift, thereby driving the first rotating plate to rotate, the rotating shaft drives the second rotating plate to rotate, further the first rotating plate and the second rotating plate drive the rollers to rotate, and finally the rollers drive the top plate to lift, thereby realizing the lifting of the wagon balance body. Therefore, the effects that the height can be flexibly adjusted, manual intervention is not needed, and labor intensity and time investment are greatly reduced can be achieved.

A variable mass balance rod (120-320, 520-820) is provided. The variable mass balance rod (120-320, 520-820) includes a balance body (122-322b, 522-822) containing a balance fluid (124-324b, 524-824), wherein the mass of the balance fluid (124-324b, 524-824) is selected to balance a measurement conduit (110-310, 510-810) containing a process material.

The utility model discloses a rapid quantitative salt adding device, which is characterized in that the upper surface of a balance body is detachably connected with a windproof cover, the top in the windproof cover is provided with a funnel, and the inside of the windproof cover is fixedly connected with a salt storage box; a flow guide groove is formed in the salt storage box, a telescopic rod is arranged in the salt storage box, a spring is arranged in the telescopic rod, a flow guide slope is fixedly connected to the lower surface of the telescopic rod, a check block is fixedly connected to the lower surface of the flow guide slope, a semi-arc block is arranged on the check block, and a rotating rod and an auxiliary rod are arranged on the inner wall of the windproof cover. The rotating rod and the auxiliary rod are fixedly connected through a connecting protruding rod, and a rotating ring is arranged on the connecting protruding rod. By means of the device, through cooperation of the flow guide groove, the telescopic rod, the spring, the check block, the connecting protruding rod and the rotating ring, an operator can easily control the salt release amount through external rotation, so that the salt adding amount is precisely adjusted, and the working efficiency and precision are greatly improved.

The invention discloses washing equipment, which comprises an inner barrel, an outer barrel, a washing machine, a washing machine, a washing machine, a washing machine, a washing machine and a washing machine control device, wherein the inner barrel is provided with an inner barrel body and a balance ring assembly; the balance ring assembly is provided with a balance body and a fan blade structure which is fixedly arranged at the lower end of the balance body and can generate airflow when the inner barrel rotates. A plurality of water permeable holes and a plurality of first air ports for air flow to pass through are formed in the inner barrel body, and the first air ports are located on the outer side of the fan blade structure. A fan blade structure is arranged at the lower end of the balance body, and air flow is generated when the inner barrel rotates and can be used for air-drying clothes; firstly, the space can be reasonably utilized, the balance body is annular, the upper end face and the lower end face of the balance body are planes, and the fan blade structure is arranged through the space below the balance body; and 2, the operation steps of a user are reduced, and the fan blade structure does not need to be placed and taken down. When the inner barrel rotates, the fan blade structure is driven to rotate to form circulating air-drying airflow inside and outside the inner barrel. Gas between the inner barrel and the outer barrel reaches the fan blade structure through the first air opening and flows into the inner barrel under the pushing of the fan blade structure; then, the water tank moves downwards in the inner barrel and gradually turns outwards, and reaches the outer side of the inner barrel through the water permeable holes; and then the airflow moves upwards along the space between the outer barrel and the inner barrel.

The application relates to the technical field of tobacco production devices, and discloses a tobacco stem arrangement device which comprises a vibrating groove, an intermediate frame, a balance body and a swing rod, both ends of the swing rod are hingedly connected to the vibrating groove and the balance body, the middle part of the swing rod is hingedly connected to the intermediate frame, a carding assembly is arranged between the vibrating groove and the intermediate frame, the bottom of the vibrating groove is provided with a sieve hole, the carding assembly comprises a conveying belt and carding plates, the carding plates are arranged on the conveying belt, the spacing between adjacent carding plates is smaller than the length of the tobacco stem, one end of the conveying belt in the length direction is provided with an arc-shaped guide plate, and a transmission column is arranged between the conveying belt and the vibrating groove; when the vibrating groove vibrates under the drive of the balance body, the transmission column can drive the conveying belt to vibrate. The original vibrating groove is used to vibrate and arrange the tobacco stems on the conveying belt, no additional power source is needed, the arrangement and posture keeping of the tobacco stems on the conveying belt can be completed, the grinding structure and the protrusions on the carding plates can assist the posture arrangement and keeping of the tobacco stems, and the posture of the tobacco stems cannot be greatly changed during transportation.

The utility model relates to the field of balances, in particular to a balance with an airflow protection function, which is characterized in that one side of the upper part of a balance body is provided with a mounting rack, the middle part of the mounting rack is provided with a connecting rack through a damping slide rail, one end of the connecting rack is connected with a protection frame, and the bottom side of the inner wall of the protection frame is provided with a pair of limiting grooves; a supporting plate is slidably mounted on one side of the limiting groove through a sliding block in a limiting mode, a pulling plate is mounted at one end of the supporting plate, and one end of the pulling plate penetrates out of the mounting frame and is clamped with the connecting frame in a matched mode. According to the utility model, the mounting rack is matched with the transparent side plate and the transparent front plate which are arranged at the bottom to realize a protection function, external airflow and dust can be effectively protected, and meanwhile, a measuring piece is placed in the feeding cabin and is matched with the connecting rack and the supporting plate to be placed above the balance in the measurement process; the measuring piece can be placed on the balance for measurement by pulling out the supporting plate, and meanwhile, the transparent front plate can be pulled out and detached for placing the measuring piece, so that the reliability and the accuracy under the measurement condition are effectively ensured.

A dustproof structure for a balance is characterized by comprising a base, the base is provided with a balance body, the base is provided with a dustproof cover, the dustproof cover is provided with an airtight door, the airtight door is provided with a handle, the airtight door is provided with a lock catch, the dustproof cover is internally provided with a retractable door, and the retractable door is provided with a gripper. A fixing ring is arranged on the dustproof cover, the rubber glove is connected to the fixing ring in a sleeved mode, the dustproof cover is arranged above the balance body of the base in a covering mode, the hand stretches into the rubber glove, the telescopic door is pulled out through the hand grab, two closed spaces are formed in the dustproof cover, the balance body is located in the space close to the right side at the moment, and the airtight door is opened through the lock catch and the handle. A to-be-weighed sample is placed in the closed space, close to the left side, in the dust cover through the air-tight door, the air-tight door is closed, the retractable door is retracted through the gripper, the closed space is formed in the dust cover, and when many samples need to be weighed, operation is easy, and use is convenient.

The application discloses a kind of aircraft mass center measuring device and measuring method, the measuring device includes base, bearing combination, shaft, storage board, measuring block, balancing body, pull rope fixed shaft, pull rope, electronic force gauge, level, locking pin and fixed seat;Base is connected with shaft by bearing combination, storage board is fixed with shaft, storage board is locked with base by locking pin, fixed seat is fixed on one side of storage board, the two side faces of fixed seat can install aircraft, the two side faces are perpendicular to the upper surface of storage board, the two side faces are parallel to the rotation center line of shaft, level, measuring block, balancing body and pull rope fixed shaft are installed on the other side of storage board, measuring block, balancing body can be individually slid and locked on the other side of storage board, the center line of pull rope fixed shaft is parallel to the rotation center line of shaft, electronic force gauge is connected with pull rope fixed shaft by pull rope, the device is simple in structure, without installing multiple sensors, operation, observation and data processing are convenient, and cost is low.

The present invention belongs to the technical field of rail transit, and proposes a train air spring active tilting system. The system mainly obtains the displacement signal of the balance body in the balance sensor and the active tilting angle, and the controller judges whether the train is on a straight section or a curved section according to the displacement signal. If it is a curved section, a first current signal is output to the active tilting valve. At this time, the active tilting valve is controlled to inflate one side of the air spring for active tilting. During the active tilting process, the controller outputs a second current signal to the corresponding electromagnetic flow control valve according to the active tilting angle, and controls the opening degree of the electromagnetic flow control valve that is turned on to control the inflation flow rate; when the train is on a straight section or the active tilting system fails, the first current signal is not output to the active tilting valve. At this time, the air springs on both sides are in the original working state, and the air pressure difference between the air springs on both sides is maintained within a certain range.

The utility model discloses a wagon balance with a supporting structure, which comprises a wagon balance body, supporting inclined plates symmetrically arranged on the left side and the right side of the wagon balance body, a cleaning assembly arranged above the wagon balance body and used for cleaning sundries scattered at the upper end of the wagon balance body, and a supporting plate arranged above the supporting inclined plates and used for supporting the supporting inclined plates. The supporting plate is fixed to the middle of the upper end of the wagon balance body, a photovoltaic panel assembly is installed at the upper end of the supporting plate, and a shooting device used for recording is fixedly installed in the middle of the inner wall of the upper end of the supporting plate. According to the wagon balance with the supporting structure, the supporting inclined plate and the wagon balance body can be conveniently assembled and positioned, the upper end of the wagon balance body can be automatically cleaned through the arrangement of a lead screw and a cleaning assembly, sundries scattered on the wagon balance body do not need to be manually cleaned, manpower is saved, a shooting device is installed on the supporting plate, and the shooting device is convenient to use. And information of vehicles and goods can be shot and recorded.

The utility model provides unattended wagon balance equipment, which relates to the field of wagon balances and comprises a wagon balance body, two ends of the wagon balance body are respectively provided with a vehicle ramp and an infrared light curtain, and an inner cavity of each vehicle ramp is provided with a blocking mechanism. The infrared light curtain is used for detecting whether a vehicle is completely weighed or not, after the vehicle is completely weighed, the infrared light curtain can transmit data to the PLC, the PLC controls the air cylinder to extend, the air cylinder drives the cross rod and the toothed plate to move while extending, the toothed plate is meshed with the gear, the gear rotates to drive the baffle to turn over, and the baffle is driven to turn over. After the baffle is turned over, an isolation barrier is formed on the vehicle ramp, the weighing sensor weighs the weighing vehicle, when the actual weight is smaller than the maximum weighing value set by the weighing sensor, the weighing sensor transmits data to the PLC, the PLC controls the air cylinder to contract, the baffle is reset, and the vehicle can pass normally.

A large-diameter straight pipe pressure balance type expansion joint with external pressure bellows balance for peripherals is provided with a working bellows. At both sides of the working bellows, one end pipe is respectively connected. Along the circumferential direction on the outer sides of the two end pipes, multiple groups of tie rod assemblies and multiple groups of external bellows balance assemblies for peripherals are arranged. Multiple groups of external bellows balance assemblies for peripherals are evenly distributed in the circumferential direction of each end pipe. The external bellows balance assembly for peripherals consists of a guide plate, an end ring, an external pressure balance body, and a pressure connection pipe. The guide plate and the end ring are sleeved on the end pipe on the same side. Both ends of the external pressure balance body are respectively fixedly connected with the guide plate and the end pipe. The external pressure balance body is provided with an external balance cavity surrounded by an external bellows and a connecting piece. The outer side of the external bellows is located in the external balance cavity. The external balance cavity is communicated with the end pipe on the same side through a pressure connection pipe. Multiple groups of tie rod assemblies are evenly distributed in the circumferential direction of each end pipe. The present invention can greatly reduce the supervision and manufacturing difficulty of the expansion joint and reduce the product cost at the same time.

The utility model discloses a wagon balance with a car washing function, comprising a wagon balance body which is connected in an installation pit, two opposite sides of the wagon balance body in the length direction and two opposite side walls of the installation pit are arranged at intervals, and two installation spaces are formed between the two opposite sides of the wagon balance body in the length direction and the two opposite side walls of the installation pit; the two drainage ditches are respectively accommodated in the two mounting spaces, the tops of the two drainage ditches are not higher than the wagon balance body, and the two drainage ditches are communicated with a sewer; the weight house is used for displaying the weight of the wagon balance body, is positioned on one side of the mounting pit, and is connected with the wagon balance body; and the high-pressure water gun is used for washing the car and is arranged on one side of the mounting pit, waste water for washing the car is conveniently discharged by arranging the wagon balance, and the service life of the wagon balance is prolonged.

The utility model relates to the field of balance devices, in particular to a balance convenient for adjusting the levelness of a base, the bottom of a balance body is provided with the base, the outer side of the base is symmetrically provided with a plurality of adjusting grooves in a rectangular shape, the adjusting grooves are internally and rotatably provided with adjusting needles through worms in a limiting manner, and the other ends of the worms extend into the base; the middle of the worm gear is connected with a rotating rod, the bottom of the rotating rod is connected with a supporting column through a threaded rod, and the supporting column is installed at the bottom of the base. According to the utility model, by observing the bubble level arranged at the bottom of the balance body and rotating the adjusting needle at the corresponding position, the worm is driven to drive the threaded rod to rotate so as to drive the supporting column to adjust the corresponding height, and meanwhile, the rotatable supporting pad is arranged at the bottom of the supporting column so as to effectively grab a placement surface; the placement stability of the base and the measurement precision are ensured.