113results about How to "Lower installation height" patented technology

The utility model relates to the technical field of rail transit fresh air systems, in particular to an air door actuator of a rail transit fresh air system, which comprises a mounting bottom plate, an air door plate, a support frame, a lifting assembly and a driving assembly, the driving assembly is mounted on the support frame and comprises a rotating shaft, a rotor iron core, magnetic steel and a stator, the rotating shaft is a hollow reducing shaft, and the rotor iron core is arranged on the rotating shaft. The rotor core comprises a large-diameter section and a small-diameter section, the rotor core is mounted at the upper part of the large-diameter section, a circle of cylindrical holes are uniformly formed in the bottom surface of the large-diameter section, magnetic steel and a stator are sequentially arranged outside the rotor core, and a brake is mounted at the upper part of the small-diameter section; the lifting assembly is provided with a ball screw and a lead screw nut, the lead screw nut is installed on the ball screw and fixed to the bottom face of the large-diameter section, the upper portion of the ball screw extends into the hollow portion of the rotating shaft, the lower end of the ball screw is connected with a guide plate, and the guide plate is fixed to the middle of the top of the air door plate. The structure is more compact, the design is more reasonable, the requirement for light weight of rail transit is met, and the waterproof and dustproof requirements can be met.

The present invention proposes a filter press with synchronous movement of filter cloth, comprising: a plurality of filter plate units, filter cloths are arranged between adjacent filter plate units; a filter cloth driving device for driving the filter cloth to reciprocate; a flattening and positioning device for the filter cloth, the filter cloth bypassing the flattening and positioning device; and a filter cloth cleaning device; wherein the adjacent filter plate units can approach each other to squeeze the material entering between the filter cloths to form a filter cake, and separate after the extrusion is completed, the filter cloth driving device can drive the corresponding filter cloth to synchronously move to remove the filter cake, the flattening and positioning device can flatten and position the filter cloth during the movement of the filter cloth, and the filter cloth cleaning device can work together with the flattening and positioning device to clean the filter cloth.

The invention relates to a side hanging type three-chuck pipe cutting machine, and relates to the technical field of pipe cutting equipment, the side hanging type three-chuck pipe cutting machine comprises a front lathe bed, a rear lathe bed, a front chuck, a rear chuck, a middle chuck, a feeding machine, a discharging follow-up mechanism and a feeding follow-up mechanism, the feeding follow-up mechanism comprises a feeding main frame, a feeding lifting frame and a follow-up centering assembly, the feeding main frame is fixedly connected with the front lathe bed, and the feeding lifting frame is fixedly connected with the middle chuck. The feeding lifting frame is in sliding connection with the feeding main frame in the vertical direction, the follow-up centering assembly is in sliding connection with the feeding lifting frame in the vertical direction, the discharging follow-up mechanism comprises a discharging main frame, a discharging lifting frame and a discharging turnover assembly, the discharging main frame is fixedly connected with the rear lathe bed, and the discharging lifting frame is fixedly connected with the rear lathe bed. The discharging lifting frame is in sliding connection with the discharging main frame in the vertical direction. The discharging overturning assembly is in sliding connection with the discharging lifting frame in the vertical direction. The device has the effect of reducing the equipment height so as to reduce the production cost.

The invention discloses a novel window and door handle which comprises a handle body and a mounting base, a sleeve is arranged on the mounting base in a protruding mode, a sleeve cavity matched with the sleeve is formed in the back face of the handle body, a rotating shaft is arranged in the sleeve cavity, and the sleeve is sleeved with the handle body through the sleeve cavity. The rotating shaft penetrates into the sleeve to achieve rotating connection of the handle and the installation base, the installation height between the handle and the installation base is reduced, then the height of the handle is reduced, on the basis, the elastic shrinkage mechanism is arranged on the rotating shaft achieving rotating connection, the structure of the handle body is further simplified, and the structure of the handle body is further simplified. And the elastic contraction mechanism is arranged on the rotating shaft serving as a rotating connection core component, so that the elastic contraction mechanism can be more easily modified to meet the requirements of customers, and the elastic contraction mechanism can adapt to handles of more door and window types without increasing the height of the handle.

The utility model relates to a double-rotation universal wheel for a transfer robot, and belongs to the technical field of transfer equipment. In order to overcome the defects that a single-rotation universal wheel is inflexible in movement and the installation height of the double-rotation universal wheel cannot be met, the double-rotation universal wheel for the transfer robot is provided and comprises a wheel shaft, wheel sets are installed at the two ends of the wheel shaft, and two rotation units are installed above the middle of the wheel shaft; the double-rotation universal wheel can be applied in a low ground clearance space, rotation is more flexible than that of a single-rotation universal wheel, the total height of the universal wheel is reduced under the same wheel diameter and loading capacity, and the application scenarios of the double-rotation universal wheel can be greatly increased.

The utility model discloses a biological floc concentration device and a submerged sludge treatment system, which relate to the technical field of sewage treatment and comprise an anti-backflow cone, an overflow flow guide mechanism, an overflow check ring plate, a separation sludge discharge barrel, a top cover plate and a fixed connecting rod, the overflow flow guide mechanism comprises an overflow water collecting tank and an overflow flow guide water outlet pipe which are coaxially arranged and communicated with each other, and the anti-backflow cone is fixedly arranged on the circumferential outer wall surface of the overflow flow guide water outlet pipe, is coaxially arranged with the overflow flow guide water outlet pipe and is located on the inner side below the overflow check ring plate; the small-diameter end of the top of the anti-backflow cone is arranged upwards, and a flow guide gap is reserved between the anti-backflow cone and the inner wall face of the sludge discharging barrel. According to the biological floc concentration device disclosed by the utility model, the anti-backflow cone is positively arranged in the conical cylinder of the cyclone, so that the separated biological floc and a carrier are prevented from being reversely mixed again, a cone selection part of a conventional cyclone concentrator is canceled, and the mounting height of the biological floc concentration device can be reduced.

The application discloses a roadway guide rail installation lifting appliance, which comprises a lifting seat and symmetrically arranged lifting assemblies, the lifting seat is fixed with a horseshoe ring through bolts; the lifting assembly comprises an anchoring plate, an anchoring rod and an adjusting pipe, a fixing ring is arranged at the end of the anchoring rod away from the anchoring plate, coaxial adjusting rods are symmetrically connected to the adjusting pipe in a threaded mode, a first screw rod is threadedly connected to the end of the top adjusting rod away from the adjusting pipe and arranged to pass through the fixing ring, a second screw rod is threadedly connected to the end of the bottom adjusting rod away from the adjusting pipe and arranged to pass through the horseshoe ring, and the lifting seat is fixedly connected with the guide rail. The lifting appliance can be flexibly adapted to different roadway working conditions through the threaded cooperation between the adjusting pipe and the adjusting rods, and the equipment procurement and storage costs are greatly reduced.

The utility model discloses an overhead type active radiator structure, and aims to provide the overhead type active radiator structure which is simple and compact in structure, has an active air inlet function, effectively reduces the noise of a whole vehicle and reduces the energy consumption of the whole vehicle. The heat dissipation device comprises fixing supports, a heat dissipation water tank, a front air inlet assembly, a side air inlet plate, a fan rectification assembly and a rear air baffle, the multiple fixing supports are connected with the two sides of the heat dissipation water tank respectively, the front air inlet assembly comprises a front frame and an air inlet mesh plate, the front frame is connected with the air inlet ends of the multiple fixing supports, and the air inlet mesh plate is connected with the front frame. The rear wind shield is connected with the fixing ends of the fixing supports and the fixing end of the heat dissipation water tank, the side air inlet plates are connected with the fixing supports on the two sides of the heat dissipation water tank, the fan rectification assembly comprises a heat dissipation fan and a flow guide cover, and the flow guide cover is provided with a rectangular air inlet and a circular air outlet. The vehicle heat dissipation device is applied to the technical field of vehicle heat dissipation.

The utility model provides a variable valve structure of an engine, and belongs to the technical field of motorcycles. The problem that in the prior art, a variable valve structure is insufficient in reliability is solved. The variable valve structure of the engine comprises a first air inlet rocker arm and a second air inlet rocker arm which are arranged on a rocker arm shaft, a first air inlet cam and a second air inlet cam are arranged on a cam shaft, the first air inlet rocker arm abuts against the peripheral face of the first air inlet cam in a matched mode and can drive an air inlet valve to be opened and closed, and a linkage pin parallel to the rocker arm shaft is arranged on the first air inlet rocker arm in a penetrating mode. The linkage pin is located on the side, close to the air inlet valve, of the rocker arm shaft and is higher than the rocker arm shaft, the second air inlet rocker arm abuts against the peripheral face of the second air inlet cam in a matched mode, and a pin hole parallel to the linkage pin and matched with the linkage pin in outer diameter is formed in the second air inlet rocker arm. The driving assembly is located on the outer side of the linkage pin in the axis direction and can push the linkage pin to enable the linkage pin to partially stretch into the pin hole. The utility model has the advantages of compact structure and high reliability.

The invention discloses a self-propelled conveyor and a chassis thereof. The chassis comprises a frame and two crawler devices, the frame is a multi-span frame and is provided with a lower-layer space for mounting a hydraulic system and an upper-layer space for mounting an electrical system; the two crawler belt devices are respectively arranged on the left side and the right side of the frame and drive the frame to walk and move. The chassis is designed to be composed of the frame and the two crawler belt devices and is matched with the frame to be a multi-span type frame, so that the installation height of the platform is effectively reduced to 800 mm from original 1200 mm and is reduced by 33%, the gravity center of the whole mechanism is obviously reduced, and the overall walking stability is greatly improved by reducing the gravity center of a conveyor which is a machine with the high gravity center. Compared with the prior art, the crawler trolley has the advantages that large shaking is avoided during walking, normal running is facilitated, meanwhile, a slewing bearing and a slewing platform are omitted, a mounting seat for mounting the slewing bearing on the crawler trolley is omitted, and the manufacturing cost is greatly reduced.

The utility model discloses a novel push broach device, and relates to the technical field of slitting circle shears. The circle shear device comprises a circle shear device and a push broach device body, the circle shear device comprises a transversely-arranged bottom frame, transmission cases are arranged at the tops of the two ends of the transversely-arranged bottom frame respectively, a set of cutter shafts are arranged between the two transmission cases, and the push broach device body comprises a push broach plate, a lead screw mechanism, a guide shaft and a driving mechanism. The lead screw mechanism is fixed to the top of the transversely-arranged bottom frame and located below the cutter shaft. According to the push-type broach device integrated on the circle shear, the novel push-type broach device is designed and installed on the base of the circle shear, the installation height is reduced, the risk that climbing operation is needed is avoided, maintenance is convenient, compared with portal frame type design, the push-type broach device integrated on the circle shear is simple in structure, production cost is greatly reduced, and production efficiency is improved. And the guide points of the cutter pushing plate for pushing the cutter are positioned at the top and the base of the circle shear, so that the operation stability is ensured.

The invention relates to the technical field of vehicle-mounted hydrogen storage cylinder installation, and discloses a vehicle-mounted hydrogen storage cylinder frame structure which comprises a gas cylinder frame, a supporting mechanism is arranged at the bottom of the gas cylinder frame and used for connecting the gas cylinder frame and a chassis girder, and a fixed installation unit and a plurality of movable installation units are sequentially arranged in the gas cylinder frame from bottom to top. The fixed mounting unit is fixedly connected with the gas cylinder frame, the movable mounting unit is detachably connected with the gas cylinder frame, and the fixed mounting unit and the movable mounting unit are both used for fixing gas cylinders. According to the technical scheme, the size and the weight of the gas cylinder frame can be reduced, so that the structure of the gas cylinder frame is more compact, the dynamic performance, the stability and the flexibility of a vehicle are not affected, when a cylinder valve and a tail valve of a gas cylinder are connected, the coaxiality and the size precision of all connecting positions can be conveniently controlled, and the reliability of the vehicle is improved. The first-pass yield of the hydrogen sealing performance is improved; and meanwhile, repair and maintenance are convenient, and the safety in the installation process can be improved.

The invention provides a stirring pile planting machine and a construction method, the stirring pile planting machine comprises a machine body platform, an upper vehicle platform and a vertical mast mechanism, the upper vehicle platform is rotatably arranged at one end of the machine body platform, and the upper vehicle platform comprises an upper vehicle platform body, a pile pressing platform arranged at one end of the upper vehicle platform body and a stand column assembly hinged to the other end of the upper vehicle platform body; the stand column assembly comprises a stirring power head and a stand column body; the stirring center of the stirring power head and the pile clamping center of the pile pressing table are symmetrically distributed about the rotation center of the upper vehicle platform body. The mast erecting mechanism is arranged between the pile pressing table and the stand column assembly and used for placing the stand column assembly in a horizontal state or a vertical state; the pile alignment difficulty can be reduced, and the installation safety can be improved.

The utility model relates to a porcelain column circuit breaker opening and closing position debugging tool which comprises a tool cylinder installed on an operating mechanism, the upper end of the tool cylinder is connected with an arc extinguish chamber, a tool connecting rod is installed in the tool cylinder and extends in the vertical direction, the length of the tool connecting rod is larger than that of the tool cylinder, and the tool cylinder is connected with the tool connecting rod. The upper end of the tool connecting rod is connected with an arc extinguish chamber transmission part, the lower end of the tool connecting rod is connected with an output shaft of the operating mechanism, a gasket is installed on the output shaft of the operating mechanism, the upper end face of the gasket is connected with the tool connecting rod, and the height difference between the tool connecting rod and the tool cylinder is equal to the height difference between the supporting column and the pull rod. The upper end and the lower end of the tool cylinder are respectively provided with a connecting flange, the upper end of the tool cylinder is connected with the arc extinguish chamber through the connecting flange, the lower end of the tool cylinder is connected with the operating mechanism through the connecting flange, and the high-altitude operation problem can be solved on the premise of ensuring the opening and closing positions, and the convenience and the safety of installation are improved.

The present invention relates to the field of agricultural machinery, and in particular to a crawler-type self-propelled wood chipper, including a crawler chassis, a feed hopper, a discharge port, a crushing device, an engine, an operating mechanism and an electronic control system; the engine is connected to the crawler chassis and the crushing device respectively through belts, the crawler chassis is fixedly connected to the crushing device and the operating mechanism respectively, and the feed hopper is rotatably connected to the crushing device; the engine is connected to a travel drive device through a belt, the travel drive device is fixedly installed on the front side of the frame, the driving wheel, the supporting roller, and the guide wheel are successively installed on the lower side of the frame from the front side to the rear side through a suspension, and the crawler is sleeved on the outside of the driving wheel, the supporting roller and the guide wheel. The wood chipper has a crawler chassis, can walk autonomously, and has an automatic overload protection device, which can effectively prevent the machine from being damaged due to overload and extend the service life of the machine. The travel drive device is placed in front, which reduces the installation height of the feed hopper and plays a role in saving work when loading.

The utility model discloses a train fault linear array photographing device placed on parallel rail surfaces and having a self-cleaning function, belongs to the technical field of photographing devices, and aims to solve the problems that a traditional train fault linear array photographing device is unreasonable in arrangement height and poor in cleaning adaptability to an image acquisition area during working. A line scanning imaging system and a control and data processing unit are installed in the protection shell, the control and data processing unit is used for controlling the line scanning imaging system to conduct image collection and sending collected images to a terminal after conducting primary processing on the collected images, and a self-cleaning system is installed at the outer top of the protection shell; and the self-cleaning system is used for cleaning an image acquisition area at the front end of the protective shell. The linear array image acquisition device is mainly used for train bottom and wheel set fault detection.

The invention relates to a crucible silicon material feeding method, and relates to the field of material transfer processes. According to the crucible silicon material feeding method, a crucible, a rail guiding vehicle assembly, a feeding mechanism, a visual module and a controller are included. The crucible is used for loading silicon materials. The rail guiding vehicle assembly comprises an X-axis moving mechanism, a Z-axis lifting mechanism and a Z-axis rotating mechanism, the Z-axis rotating mechanism is installed on the Z-axis lifting mechanism, the Z-axis lifting mechanism is installed on the X-axis moving mechanism, and the Z-axis rotating mechanism is used for bearing a crucible. The silicon material at each horizontal height in the crucible is spread through rotation, so that the silicon material at the first height in the crucible is relatively uniform and flat, and the gap between the silicon materials is smaller than the gap between the silicon materials when the silicon materials are directly poured in, so that the problem that the silicon materials cannot be directly poured into the crucible when the silicon materials are put in the existing device is solved. The problem of low crucible loading capacity caused by non-uniform gaps of the silicon materials is solved, and the blanking height set target value cannot enable the blanking materials to be broken, so that the problem that the silicon materials are fragile is solved.

A compressor, a condenser, an expansion valve and an evaporator are fixed on a shell, an evaporator body inclines towards an air outlet of an air conditioner and is fixed in an air outlet cavity, an air blowing opening is formed in an upper partition plate, a positive pressure fan is fixed on the partition plate, and a negative pressure fan is fixed on the positive pressure fan. The downstream groove edge of the condensate water collecting groove is provided with a blocking plate, the upper end of the blocking plate and the upper portion of the fan cover form an air outlet channel, the air outlet channel is communicated with an air conditioner air outlet, and the upper partition plate is connected with the upstream groove edge of the condensate water collecting groove. A lower fan cover covering an air conditioner return air inlet and an air conditioner air outlet is installed below the shell, an air inlet and an air outlet are formed in the lower fan cover, the distribution range of the air outlet is larger than that of the air inlet, an air inlet cavity and an air outlet cavity corresponding to the air inlet and the air outlet are formed in the lower fan cover, and the air inlet cavity corresponds to the air conditioner return air inlet. The exhaust chamber corresponds to an air conditioner exhaust outlet; the air conditioner host can effectively reduce the overall thickness and ensure stable blowing.

The utility model discloses a power equipment fault alarm device, which comprises a bottom plate and a shell, an alarm is mounted on the inner wall surface of the rear side of the shell, a power supply electrically connected with the alarm is mounted on the inner bottom surface of the shell, an equipment connecting wire extending to the outside of the shell is fixedly mounted on one side of the alarm, and the equipment connecting wire is electrically connected with the power supply. One side of the power supply is fixedly provided with an electric connecting wire and a fixed cylinder which extend to the outside of the shell, and the fixed cylinder is fixedly arranged on the top surface of the bottom plate; the two sliding rods which are symmetrically arranged penetrate through the top surface of the fixed cylinder in a sliding manner; and the connecting seat is fixedly mounted at the top end of the sliding rod. According to the power equipment fault alarm device, the stable and effective installation height can be conveniently guaranteed, the use stability is improved, separation caused by external force is avoided, meanwhile, height adjustment can be conveniently carried out, the operation difficulty is reduced, time and labor are saved, the efficiency is improved, and the practicability of the power equipment fault alarm device is improved.

The utility model relates to the technical field of air conditioners, in particular to a silencer and an air conditioner, the silencer comprises a silencing body, a silencing pipe and a connecting assembly, the silencing body is provided with a silencing cavity, one end of the silencing pipe is connected with one end of the silencing body, and at least part of one end of the silencing pipe extends into the silencing cavity; the connecting assembly comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the other end of the silencing pipe, the other end of the first connecting pipe is suitable for being connected with an exhaust port of the compressor so as to communicate the silencing pipe with the exhaust port of the compressor, and one end of the second connecting pipe is directly connected with the other end of the silencing body. And the other end of the second connecting pipe is suitable for being connected with an indoor side heat exchanger so as to communicate the silencing cavity with the indoor side heat exchanger, the silencer can adapt to a narrow space in a compressor cavity, and the reliability of the connecting pipes is improved.

The present invention relates to the technical field of application of vehicle fuel supply systems, and in particular to a high-mounted fuel tank refueling device, comprising a low-mounted auxiliary fuel tank, a high-mounted main fuel tank and an electric fuel pump, wherein the low-mounted auxiliary fuel tank comprises a refueling port arranged thereon, an auxiliary fuel tank liquid level sensor arranged therein and an auxiliary fuel tank oil outlet arranged below its side wall; a main fuel tank oil inlet is arranged on the top of the high-mounted main fuel tank, and a main fuel tank liquid level sensor is arranged inside the main fuel tank; the auxiliary fuel tank oil outlet is connected to the main fuel tank oil inlet through an electric fuel pump, and the oil inlet of the electric fuel pump is connected to the auxiliary fuel tank oil outlet through an oil hose; the oil outlet of the electric fuel pump is connected to the main fuel tank oil inlet through a refueling connecting pipe. The present invention can solve the problem of needing to raise the refueling gun to the position above one's head when refueling, and the installation layout space requirement is small, which meets the pursuit of space and has a low installation height.

The front fork assembly comprises a vertical pipe, a steering pipe, a pressing piece and an upper shoulder, and the steering pipe is rotationally assembled on the peripheral side of the vertical pipe through a bearing; the pressing piece is arranged on the peripheral side of the vertical pipe and used for abutting against the bearing so that the bearing can be limited in the axial direction of the vertical pipe. And the upper shoulder is fixed on the peripheral side of the pressing piece. According to the front fork assembly, the installation height of the folding lower seat can be reduced, the height size of the front fork assembly in the vertical direction is reduced, and therefore the problems that the occupied space is large, and packaging and transportation are not facilitated are solved.

The utility model discloses a bag taking machine which comprises a machine body provided with a bag taking opening communicated with the outside. The mounting assembly is arranged in the machine body and located on the lower side of the bag taking opening, and the mounting assembly is used for mounting a plastic bag roll; the limiting assembly is arranged in the machine body, the limiting assembly comprises at least two limiting parts, and the two limiting parts are used for limiting the two opposite ends of the plastic bag roll; and the bag conveying assembly is arranged in the machine body, and the bag conveying assembly is suitable for conveying the plastic bags of the plastic bag roll to the bag taking opening. According to the bag taking machine, the installation assembly is arranged on the lower side of the bag taking opening, the installation height of the plastic bag roll can be reduced, the plastic bag roll can be conveniently installed, the two opposite sides of the plastic bag roll are limited through the two limiting components, the risk that the plastic bag is curled or even clamped in the working process of the bag taking machine can be reduced, and the bag taking efficiency is improved. Working reliability of the bag taking machine is improved, and normal bag taking of a user is facilitated.

The application provides a hollow coupling device for a semiconductor wafer, and a semiconductor wafer cleaning device. The hollow coupling device comprises a hollow coupling support for connecting a wafer clamping device and a driving motor. A hollow structure is arranged at the center of the hollow coupling support, and the hollow structure is used for accommodating a bearing and a hollow shaft. The hollow shaft is internally provided with a cooling water pipe. The bearing is arranged in the hollow structure and is sleeved on the outer diameter of the hollow shaft, and is used for allowing the hollow coupling support and the hollow shaft to rotate relative to each other. The application can be compatible with a heating disc added to the back of the wafer, does not increase the overall installation height of the wafer clamping device, and the hollow structure of the hollow coupling support can accommodate the cooling water pipe, so that the heating disc can be efficiently cooled.

The present invention relates to a climbing mirror, which comprises: a support frame, a mounting frame, a first reflector and a second reflector; the support frame is used to overlap on a laser box; the mounting frame is arranged at an angle with the support frame and is detachably connected; the first reflector and the second reflector are respectively mounted on the mounting frame and are located on both sides of the support frame, and the first reflector and / or the second reflector can be mounted on the mounting frame close to or far from each other, the first reflector is used to reflect the laser to be detected, and the second reflector is used to reflect the laser reflected by the first reflector to a detection device; a light-transmitting port is provided on the support frame; the light-transmitting port is used for the reflected light between the first reflector and the second reflector to pass. The present invention is based on the mode of overlapping the support frame on the laser box, and the first reflector and the second reflector are respectively located on both sides of the support frame, which can lower the center of gravity of the entire device, is more stable when used, and is suitable for use in narrow spaces when only the mounting frame and the first reflector are extended.

The utility model discloses a multi-way valve with a sealed end face, and relates to the technical field of multi-way valves. Comprising a valve body, a valve cavity is formed in the middle of the valve body, a plurality of valve ports are distributed in the circumference of one end of the valve body, and the valve ports communicate with the valve cavity; the valve element is arranged in the valve cavity, a driving shaft of the valve element is sealed and rotationally connected with the valve body, the valve element is provided with a plurality of flow channels, and flow channel openings of the flow channels directly face the end, provided with the valve port, of the valve body; the sealing gasket is embedded in the inner side of the end, provided with the valve ports, of the valve body, the sealing gasket can seal a gap between the valve element and the valve body, the sealing gasket is provided with a plurality of flow guide ports, and the flow guide ports correspond to the valve ports one to one; and after the valve element rotates by a set angle, the flow channels in the valve element can communicate with the corresponding valve ports according to the corresponding flow path communication modes. The utility model has low leakage failure rate.

The utility model designs a vibration-resistant cavitation-resistant double-suction pump, which comprises a double-suction pump and is characterized in that the double-suction pump is mounted on a base, first rib plates extending downwards are arranged below the front and rear surfaces of a middle opening surface of the double-suction pump, second rib plates extending downwards are arranged below the front and rear surfaces of a bearing mounting seat, and the first rib plates and the second rib plates are arranged on the base. The bottom ends of the first rib plates and the second rib plates on the two sides are connected with pump feet which are horizontally arranged, and mounting holes are formed in the pump feet; pump foot mounting plates are arranged on the two sides of the base, the pump foot mounting plates are connected to the surface of the base through pump foot vertical ribs, supporting ribs are arranged on the sides of the pump foot mounting plates, mounting threaded holes are formed in the pump foot mounting plates, and the mounting threaded holes correspond to mounting holes formed in pump feet in a one-to-one mode. And the pump foot of the double-suction pump is screwed in the mounting threaded hole in the pump foot mounting plate by a screw through the mounting hole in the pump foot. The utility model has the advantage that the installation height of the double suction pump is reduced. The center of mass is closer to the ground and is stable and vibration-proof; the net positive suction head of the device is increased, and pump cavitation conditions are improved.

The utility model belongs to the technical field of bathroom equipment, and discloses a height adjusting structure, a toilet seat and a toilet, and the height adjusting structure comprises a lifting adjusting piece and a resetting piece. The lifting adjusting part comprises an abutting head part and a connecting rod part which are connected, an abutting face is formed on the side, close to the connecting rod part, of the abutting head part, the connecting rod part movably penetrates through a connecting hole in the foot pad, the abutting face abuts against the foot pad, and the end, away from the abutting head part, of the connecting rod part is connected to the seat ring body in a lifting mode; the reset piece is clamped between the foot pad and the seat ring body and used for driving the foot pad to reset. According to the height adjusting structure, the mounting height of the foot pad can be adjusted, a gap between the seat ring and the upper surface of the toilet bowl body is eliminated, and the attractiveness of the toilet bowl and the use experience of a user can be improved.

The application relates to the technical field of structural engineering, in particular to a built-in negative stiffness damper system for controlling in-plane and out-of-plane vibration of a cable, which is used for controlling the vibration of a cable body and comprises a stand, a cross beam, a negative stiffness device, a damper and a connecting rod, the cross beam is arranged above the stand, a first hole is arranged at the top end of the stand away from the stand, the damper is arranged on the side of the cross beam away from the stand and is connected with the cable body, the damper is symmetrically arranged along the vertical plane where the cable body is located, and the negative stiffness device is arranged inside the hollow cross beam and is connected with the cable body through the connecting rod. The built-in negative stiffness damper system for controlling in-plane and out-of-plane vibration of the cable can provide negative stiffness and damping effects when the cable vibrates in the in-plane and out-of-plane directions.

The invention discloses a horizontal full-diameter bidirectional eccentric hemispherical valve, comprising a valve body, an eccentric hemispherical valve arranged in a valve cavity of the valve body, an inlet end and an outlet end arranged at the left and right ends of the valve body, a floating valve seat arranged at the outlet end, a main sealing ring and a ball crown arranged on the eccentric hemispherical valve, a sealing pair formed by the floating valve seat and the main sealing ring, a first pressure chamber arranged between the inner side of the main sealing ring and the eccentric hemispherical valve, and a second pressure chamber arranged between the end face of the floating valve seat and the valve body. The front and rear ends of the eccentric hemispherical valve are respectively connected with a front valve stem and a rear valve stem, the eccentric hemispherical valve, the front valve stem and the rear valve stem form a valve shaft, the valve shaft is in a horizontal direction, a valve cover is arranged on the upper part of the valve body, an arc bottom matching the inner circle of the diameter is arranged at the lower end of the valve body, and the eccentric hemispherical valve forms a full-circle flow channel with the arc bottom after opening. The invention adopts a horizontal structure, has a small height, is easy to maintain by opening the cover, and realizes the online maintenance function; the flow channel is unobstructed, the water loss is small, and there is no impurity accumulation; the forward and reverse seals are suitable for circulating water and various special working conditions.