115results about How to "Short trip" patented technology

The invention relates to the technical field of compressors, and discloses an air cylinder assembly and a compressor. The air cylinder assembly comprises a first air cylinder, a second air cylinder and a flow dividing channel. The first cylinder includes an intake passage having an intake port and an exhaust port. The second air cylinder and the first air cylinder are coaxially arranged. The shunting channel is arranged on the first cylinder and the second cylinder. One end of the shunting channel is a shunting inlet and is communicated with the air inlet channel, and the other end of the shunting channel is a shunting outlet and is positioned on the inner wall of the second cylinder. The axial size of the first air cylinder is larger than that of the second air cylinder. Air enters the air inlet channel through the air suction port and then is shunted, enters the first air cylinder through the air outlet and enters the second air cylinder through the shunting channel. According to the compressor, the axial size of the first air cylinder is larger than that of the second air cylinder, the diameter of the air suction port can be increased, the air inlet sectional area can be increased, the air suction amount during high-frequency operation of the compressor is improved, and the air suction efficiency is improved.

The utility model relates to the technical field of agricultural machinery, in particular to a grain unloading mechanism and a corn harvester, which comprise a cluster box, a support, a lifting mechanism and a conveyor belt assembly, the ear box is rotationally installed on a support through a hinge piece, a lifting mechanism is arranged on the support, and the output end of the lifting mechanism is connected with the ear box and used for driving the ear box to be lifted and turned over; a grain unloading surface is arranged in the ear box, and a conveying belt assembly capable of assisting grain unloading is arranged on the grain unloading surface. The lifting time of the cluster box can be shortened, the working efficiency is improved, and the problem that clusters are difficult to dump under the condition that the humidity of the clusters is high or the number of stalks is large can be solved.

The utility model discloses a bead feeding mechanism capable of clamping and feeding various embroidery beads, which comprises a base and a bead pulley, and the bead feeding pulley is provided with an elastic bead feeding clamp capable of advancing to a bead embroidering position or retreating to a bead receiving position under the driving of the bead feeding pulley. The front end of the elastic bead feeding clamp is provided with a jaw which can be folded or unfolded under the combined action of friction force between the bead feeding pulley and the base and friction force between the elastic bead feeding clamp and the base, the bead feeding mechanism capable of clamping and feeding various embroidery beads further comprises a bead guide block, and the bead guide block is located above the elastic bead feeding clamp and hinged to the base. A front bead guide hole and a rear bead guide hole are formed in the bead guide block, the base is provided with a driving mechanism which drives the bead guide block to rotate with the hinge point as the axis so as to switch the positions of the front bead guide hole and the rear bead guide hole, and when the elastic bead feeding clamp retreats to the bead receiving position, the jaw is opened and aligned with the front bead guide hole or the rear bead guide hole. And a bead blocking plate is arranged between the bead guide block and the elastic bead feeding clamp. The utility model has the advantages of simple structure, smaller stroke, higher speed and better stability.

The utility model relates to a packaging box feeding mechanism which comprises a storage rack, a feeding mechanism, a feeding mechanism and a discharging mechanism. A plurality of packaging boxes are stacked on the storage rack. The conveying line is arranged on one side of the storage rack; the jacking module is arranged at the bottom of the storage rack and is suitable for driving the multiple packaging boxes to ascend and descend; a clamping module; after the clamping module clamps the packaging box located at the top of the storage rack and places the packaging box on the conveying line, the jacking module lifts the remaining packaging box by a distance equal to the thickness of the packaging box, and the remaining packaging box is to be clamped by the clamping module; through the arrangement of the jacking module mechanism, namely after the previous packaging box is clamped and placed on the conveying line, the jacking module drives the multiple packaging boxes to ascend to the thickness of one packaging box, clamping of the clamping module is facilitated, and therefore the clamping module does not need to descend in the packaging box clamping process, and the packaging box clamping efficiency is improved. And the descending time and the gradual increase of the descending stroke are avoided, so that the taking of the packaging box can be realized, and the descending stroke is reduced.

The invention relates to the field of engineering machinery, and discloses a drill rod transfer system and a control method.The drill rod transfer system comprises a drill rod box, a lifting frame and an electric control system, the drill rod box and a rack are both installed on the lifting frame, the lifting frame is installed on a crawler, a first opening is formed in the lifting frame, and a drill rod in the drill rod box is perpendicular to the rack; a transfer manipulator is arranged on one side of the drill rod box close to the rack; the transfer manipulator comprises a transverse moving unit, a vertical moving unit, a longitudinal moving unit, a telescopic unit and a clamping jaw which are connected in sequence, the electric control system comprises a telescopic sensor and a lifting sensor, the telescopic sensor is used for measuring the length change of the telescopic unit, and the lifting sensor is used for measuring the length change of the vertical moving unit. And the sensor is simple and reliable.

The invention relates to a novel roller rejecting mechanism for silicon wafer production, which comprises a bottom plate, a plurality of groups of upright posts are arranged on the upper side of the bottom plate, connecting shafts are arranged on the upright posts, the connecting shafts are rotatably connected with a supporting plate, a placement frame is arranged on the upper side of the supporting plate, and a plurality of connecting shafts are rotatably connected to the placement frame. Rolling wheels are arranged at the two ends of the connecting shaft respectively, and the supporting plate is further provided with an auxiliary mechanism; a cavity is milled in the middle of the bottom of the supporting plate, the movable end of the air cylinder extends into the cavity, and the top end of the stand column extends into the cavity of the supporting plate. Due to the fact that the cavity is milled in the middle of the bottom of the supporting plate, the air cylinder is installed between the motor and the stand column, the stand column is of an integrated structure, and when the supporting plate inclines downwards, the stand column partially enters the cavity of the supporting plate, installation of the air cylinder is facilitated, the weight reduction effect is achieved, the assembling efficiency is greatly improved, adjustment in the assembling process is facilitated, and the assembling efficiency is improved. The space utilization rate of the whole mechanism is improved, and the cost is reduced.

The utility model discloses a sour soup fermentation device with depressurization and exhaust functions, and relates to the technical field of sour soup fermentation devices. The sour soup fermentation device with the depressurization and exhaust functions comprises a frame, a fermentation tank is fixedly connected to the upper surface of the frame, an exhaust pipe is fixedly connected to the outer surface of the fermentation tank, an exhaust groove is formed in the inner wall of the exhaust pipe, a sealing groove is formed in the bottom wall of the exhaust groove, and a sealing plate is slidably connected to the inner wall of the sealing groove; the bottom wall of the sealing groove is fixedly connected with a limiting rod, the upper end of the limiting rod slidably penetrates out of the upper surface of the sealing plate and is fixedly connected with the top wall of the exhaust groove, the outer surface of the limiting rod is slidably sleeved with an adjusting plate, the lower surface of the adjusting plate is fixedly connected with a spring, and the lower end of the spring is fixedly connected with the upper surface of the sealing plate. According to the air exhausting device for the fermentation tank, air exhausting can be automatically completed when the internal pressure of the fermentation tank is large, workers do not need to manually exhaust the fermentation tank, the air exhausting delay is reduced, and meanwhile the working intensity of the workers is also reduced.

The invention relates to a piece production device, and belongs to the technical field of battery manufacturing. The pole piece production device comprises a negative pressure adsorption mechanism which comprises a negative pressure adsorption assembly, and when a pole piece material belt passes through a cutting station, the negative pressure adsorption assembly is used for adsorbing the pole piece material belt; the lifting driving assembly is used for driving the negative pressure adsorption assembly to move in the vertical direction; the lifting driving assembly is used for driving the negative pressure adsorption assembly to rotate around a first axis, the rotation driving assembly is used for driving the negative pressure adsorption assembly to rotate around a first axis, and the lifting driving assembly and the rotation driving assembly jointly drive the negative pressure adsorption assembly to be switched between a cutting station and a discharging station so that the pole pieces formed at the cutting station can be transferred to the discharging station. The flaking device has relatively high flaking efficiency and flaking qualification rate.

The invention relates to the field of automation of pathological slide staining, in particular to an automation device for cytological slide staining and histological immunohistochemistry and special staining based on an advanced fluid control technology, which comprises an upper centrifugal component and a lower slide staining component, and the slide-making and dyeing assembly comprises a circular or arc-shaped dyeing turntable and a matched traditional dyeing or immunohistochemical and special dyeing liquid path component. According to the invention, a traditional transfer mode is not adopted, such as a pipette arm, a pipette and other structures which are easy to generate mechanical faults, key function modules such as sample oscillation, centrifugation, flaking, dyeing and the like are integrated in one machine, cytology sample pretreatment and flaking dyeing operations are fully automatically completed, and special dyeing functions such as histology immunohistochemistry and the like can be compatible; tedious steps are greatly simplified, the functional diversity, efficiency and stability of the equipment are improved, and the maintenance cost of the equipment is also reduced.

The utility model belongs to the technical field of sheet metal bending equipment, and discloses a pneumatic hinge cutter of a flexible bending center machine, which comprises a hinge cutter holder, and a hinge female cutter is fixedly mounted on one side of the bottom surface of the hinge cutter holder. The pushing assembly is matched with rotation control of the rotating rod, a rotating and swinging mode is utilized under thrust, the connecting function of the connecting assembly is matched, movement control over a set of movable inclined block cutters is achieved, the inclined faces of the movable inclined block cutters are matched with the inclined faces of the movable auxiliary cutters, and the hinge main cutter and the movable auxiliary cutters are pushed away in the transverse advancing process; compared with a common hinge knife which freely falls to act, the hinge knife has the advantages that the reaction speed is greatly increased, a metal plate is not scratched and the plate is not shoveled, and compared with a traditional hinge knife which is driven in a cylinder mode, the hinge knife has the advantages that the stroke is saved, the stroke is short, the action is fast, and the working efficiency is improved. The action efficiency is greatly improved, and the use effect is good.

The invention relates to the technical field of drill rod conveying, and discloses a drill rod conveying system which comprises a drill rod box arranged at the upper end of a lifting frame, and further comprises a clamping unit and an induction unit, the clamping unit comprises a lifting assembly and a transfer manipulator, the transfer manipulator stretches out and draws back to grab a drill rod in the drill rod box, and when the transfer manipulator stretches out and draws back to the limit, the induction unit is started; the lifting assembly further assists the transfer manipulator to lift and clamp the drill rod, and the sensing unit is used for monitoring the vertical transfer displacement between the drill rod taken out of the drill rod box by the clamping unit and the butt joint position of the drill rod and the rack after the position of the rack is changed; according to the scheme, the drill rod is transferred through the clamping unit capable of moving in the three coordinate axis directions, so that the drill rod can be in butt joint with the rack, the conveying route of the clamping unit is greatly simplified, and the sensing unit monitors the displacement of the clamping unit in the moving process; and the height of the clamping unit under different working conditions is calculated, monitored and controlled through the sensing unit, so that the system is simple and reliable.

This application relates to a transfer station and bonding equipment, and pertains to the field of semiconductor packaging technology. The transfer station includes a first base, a rotary drive, and a platform assembly. The rotary drive is disposed on the first base. The platform assembly includes a second base and a platform. The second base is connected to the drive end of the rotary drive, and the platform is disposed on the second base. The platform includes at least a first platform and a second platform distributed around a rotation axis of the rotary drive. The first and second platforms are respectively used to carry different products. The rotary drive is used to drive the second base to rotate, thereby moving one of the platforms to a preset position and adjusting the platform at the preset position to a preset angle. This application can improve upon the problems of existing transfer stations, such as large space occupation, reduced production capacity, and high costs.

The invention relates to the technical field of drawer box forming machines, and discloses a high-efficiency drawer box forming machine capable of reducing paper box cost, which comprises a fixed frame, a material taking device, a first edge folding device and a box folding mechanism are arranged in the fixed frame, and the box folding mechanism is sequentially provided with a mold pressing device, a push plate device, a second edge folding device and a third edge folding device. The plate pushing device and the third edge folding device are each provided with a first guide rail, a defoaming device is arranged at one end of each first guide rail, and a discharging device which moves synchronously with the plate pushing device and the third edge folding device is arranged above the defoaming device. Compared with the prior art, the paper box folding machine has the following advantages that 1, through the box folding mechanism and the defoaming device, paper boards are folded and formed, surface paper is attached to the side wing plates, surface paper does not need to be additionally attached to the corners of a paper box for sealing, surface paper materials are saved, and the paper box cost is reduced; linear step type material conveying and processing are adopted from feeding to paper box forming, defoaming and discharging, the stroke is short, the station conveying speed is high, and the production efficiency is high.

The utility model discloses a numerical control hydraulic control module, which relates to the numerical control hydraulic technical field, and comprises a base plate and a first U-shaped plate, the first U-shaped plate is fixedly arranged on the upper surface of the base plate, the top of the first U-shaped plate is fixedly provided with a first hydraulic cylinder, and the tail end of a piston rod of the first hydraulic cylinder extends to the lower part of the first U-shaped plate; a hexagonal hole is formed in the tail end of a piston rod of the first hydraulic cylinder, a hexagonal prism is slidably inserted into the hexagonal hole in a matched mode, a pressing rod is fixedly arranged at the lower end of the hexagonal prism, and the outer wall of the tail end of the piston rod of the hydraulic cylinder is fixedly sleeved with a second U-shaped plate; transmission mechanisms for driving the pressing rods to move relative to piston rods of the first hydraulic cylinders are arranged on the two sides of the second U-shaped plate. The hydraulic mechanism is provided with the auxiliary hydraulic mechanism, the pressing rod of the main hydraulic mechanism can be rapidly displaced, the stroke of the main hydraulic mechanism can be reduced, and the working efficiency is improved.

The utility model relates to an automatic feeding and discharging device for PCBs. According to the technical scheme, the automatic feeding and discharging device is characterized by comprising a rack; a suction cup moving mechanism is arranged on the rack; the suction cup moving mechanism is provided with an output end; a jointed board adsorption mechanism is arranged at the output end of the suction cup moving mechanism; a table top lifting mechanism is arranged on the rack and located below the jointed board adsorption mechanism. By arranging the table top lifting mechanism, the table top, used for transporting the PCB, on the skip car can be lifted into the moving range of the suction cup moving mechanism, and therefore the stroke of the suction cup moving mechanism is reduced; the position of the jointed board adsorption mechanism is adjusted through the suction cup moving mechanism, the jointed board adsorption mechanism adsorbs the multiple stacks of PCBs on the table top, the multiple stacks of PCBs are placed on the working table top of the depth control gong equipment side by side for board jointing, automatic feeding and discharging operation of the PCBs is achieved, the processing requirements of the PCBs of different specifications and numbers are met, the production efficiency is effectively improved, and the production cost is reduced. And errors caused by human factors are reduced.

The invention discloses a semi-solid die-casting mold for manufacturing a shock-absorbing tower, comprising a die seat and a punch seat, wherein the punch seat is provided with a punch core, the die seat is provided with a die core, a cavity is provided between the punch core and the die core, a gate sleeve and a gate sleeve locking plate are provided on the die seat, the gate sleeve is communicated with the middle part of the cavity, a fixing plate is provided on the upper side of the die seat, a gate sleeve docking seat is provided on the fixing plate, a direct current channel is provided on the gate sleeve docking seat, a water cutting nozzle assembly is provided on the upper side of the die seat, a die foot, an ejector plate and an ejector bottom plate are provided at the bottom of the punch seat, an ejector is provided between the ejector plate and the ejector bottom plate, and a plurality of groups of buckle machine assemblies are provided between the fixing plate, the die seat and the punch seat, so that when opening the mold, the die seat and the punch seat are separated only after the fixing plate and the die seat are separated for a distance; the central feeding method is adopted to greatly shorten the travel of the flow channel, reduce the energy loss of aluminum liquid in the filling process, and the die-cast product can be directly used without any treatment.

The present application relates to the technical field of shield switch structure, and discloses a shield automatic switch structure and processing equipment, the shield automatic switch structure includes beam assembly, first drive mechanism, telescopic shield assembly and support connecting mechanism. When the shield automatic switch structure is used, the support connecting mechanism is arranged on the second side of the telescopic shield assembly, the support connecting mechanism occupies small floor space, and is convenient to arrange; the support connecting mechanism has small stroke and occupies small floor space; when the telescopic shield assembly is closed, the second side of the telescopic shield assembly is first connected and fixed on the first fixed support through the support connecting mechanism; when the telescopic shield assembly needs to be opened, the support connecting mechanism is disconnected from the first fixed support, the first drive mechanism drives the telescopic shield assembly to move away from the outer protection component, which can effectively prevent the telescopic shield assembly from being stuck during opening and closing, thereby effectively reducing the failure rate of the equipment, improving production efficiency and maintenance cost.

This utility model discloses a mold closing mechanism with a composite ejector cylinder, including a moving mold plate, which has a mold plate body and an outwardly extending protruding structure. The protruding structure is equipped with at least one main ejector cylinder and at least two auxiliary ejector cylinders, the stroke of the main ejector cylinder being greater than the stroke of the auxiliary ejector cylinders. An ejector guide plate is provided between the mold plate body and the protruding structure. The piston rod of the main ejector cylinder is connected to the ejector guide plate, while the piston rod of the auxiliary ejector cylinders is not connected to the ejector guide plate. Several ejector rods are provided on the ejector guide plate, penetrating the mold plate body. During the stroke of the auxiliary ejector cylinders, the main ejector cylinder and the auxiliary ejector cylinders together drive the ejector guide plate to complete the ejection action of the ejector rods. During the remaining stroke, the main ejector cylinder alone drives the ejector guide plate to complete the ejection action of the ejector rods. This mold closing mechanism with a composite ejector cylinder can provide a large ejector force in the initial demolding stage and achieve rapid ejection in subsequent strokes, combining large ejection force and high movement speed to improve production efficiency.

The invention discloses a longitudinal tube bundle type spray pipe extension section which comprises a conical barrel structure formed by arranging and connecting a plurality of longitudinal pipes in the circumferential direction. The inlet flange, the inlet collector ring, the small-end base plate and the outer wall of the conical barrel structure are closed to form an inlet collector cavity; the outlet collector ring is of an annular structure with an opening in the inner wall, and the opening position of the outlet collector ring is fixedly connected with the outer wall of the rear end area of the conical barrel structure through a large-end base plate; the outlet collector ring, the large-end base plate and the outer wall of the conical barrel structure are closed to form an outlet collector cavity; a radial inflow hole and a radial outflow hole are formed in the outer wall of the longitudinal pipe; the radial inflow hole is positioned in the inlet collector cavity; the radial outflow hole is positioned in the outlet collector cavity; coolant circulates in the longitudinal pipe serving as a cooling channel. The engine is simple in structural form, light in weight, small in flow resistance and capable of being used as a liquid rocket engine.

An electromechanical drum brake comprises two brake shoes (3, 4) intended to be in contact with a drum, at least one actuator (110) configured to abut the brake shoes (3, 4) against the drum, and an electric motor (22). The electric motor is arranged to activate the actuator (110), the actuator (110) comprising at least one movable element (18) after the actuator (110) is activated, the movable element (18) being movable between a braking position and a position beyond a release position, in which the brake shoes are no longer in contact with the drum. The actuator (110) comprises a stopper (126) which is arranged only in the actuator and when the movable element (18) is in a position beyond the release position, the movable element abuts against the stopper, and the motor powers the actuator until the movable element (18) abuts against the stopper (126).

The invention provides a double-guide-wire sphincter incision knife, and relates to the field of medical instruments. The double-guide-wire sphincter incision knife comprises a catheter sheath, a shredding cavity and two guide wire cavities which are independent of each other are formed in the catheter sheath, and a rapid exchange opening is formed in the side wall of at least one guide wire cavity. The double-guide-wire sphincter incision knife solves the technical problem that in the prior art, a duodenal papilla sphincter incision knife is difficult in guide wire super-selection.

The invention relates to the technical field of material taking devices, and particularly discloses a suction cup type vacuum material taking device for lens protection plastic parts. The sliding rail support is arranged on the opposite side walls of the two supporting plates, and sliding plates are arranged on the two symmetrical side faces of the sliding rail support in a sliding mode. The two sliding plates are each provided with a material storage pipe in a lifting mode, the two material storage pipes can conduct feeding and discharging alternately, annular suction parts are vertically arranged in the material storage pipes at intervals, the outer wall of each annular suction part is provided with a connecting pipe, and the connecting pipes extend out of the outer walls of the material storage pipes; the control pipe is arranged on the outer wall of one side of the storage pipe; according to the suction cup type vacuum material taking device for the lens protection plastic parts, the multiple plastic parts are sucked at a time for material taking, the reciprocating stroke of material taking is reduced, continuous feeding and discharging are achieved, the production efficiency is improved, and the economic cost of production is reduced.

This utility model discloses a high-efficiency toothed sprocket production mold for powder metallurgy, relating to the field of sprocket production. It includes a lower mold base, with a support frame fixedly connected to the top of the lower mold base. Cylinders are installed on both sides inside the lower mold base, and a fixed plate is fixedly connected to the output end of each cylinder. An upper mold is fixedly connected to the bottom of the fixed plate. A powder box is also provided above the lower mold base, with a scraper and discharge port installed at the bottom of the powder box. A drive mechanism for moving the powder box is provided on the fixed plate. The opening and closing of the mold is achieved by driving the fixed plate and the upper mold up and down through the cylinders. Simultaneously, a rack and pinion transmission mechanism converts the up-and-down movement of the upper mold into the horizontal movement of the powder box. When the upper mold presses down for forming, the powder box automatically moves away from the mold hole to avoid interference. After forming, it automatically returns to the center position for powder filling. The entire process requires minimal manual intervention.

The application relates to the technical field of relays, in particular to a novel magnetic latching relay which comprises a shell, a contact mechanism fixedly installed in the shell, the contact mechanism comprising a first static foot and a second static foot, the first static foot and the second static foot being fixedly installed on one side in the shell, a first static contact being fixedly installed on the first static foot, a second static contact being fixedly installed on the second static foot, a rotating mechanism being rotatably connected to one side in the shell and located between the first static foot and the second static foot, two dynamic contacts being fixedly installed on the rotating mechanism and used for cooperating with the first static contact and the second static contact to realize circuit on-off, a pushing assembly being fixedly installed in the shell and used for driving the rotating mechanism to rotate, and an electromagnetic assembly being fixedly installed in the shell and used for driving the pushing assembly, through rotation of the rotating mechanism, the two dynamic contacts on the rotating mechanism are respectively attached to the first static contact and the second static contact, the single-contact stroke is shortened, and the working efficiency of the device is improved.

The utility model relates to hydraulic breaking hammer technical field especially hydraulic breaking hammer power assembly, include: drill rod seat for installing cylinder and drill rod, this drill rod seat is used for sliding installation drill rod, the piston is slidably installed in this cylinder, reversing valve, this reversing valve is installed on the cylinder and is equipped with the hydraulic oil circuit for the hydraulic oil flow circulation between it and the piston cavity in the cylinder, this reversing valve passes through reversing control hydraulic oil and enters the different cavity of piston for realizing piston reciprocating motion along the cylinder, energy accumulator, its installation is on reversing valve and is connected with the hydraulic oil circuit of reversing valve, is used for the hydraulic energy storage when piston is going up and the release hydraulic energy when piston is going down to increase the impact force when piston is going down, is used for solving the technical problem that the piston buffer of the breaking hammer in the prior art exists in the general existence of internal leakage and is hurt and the slow and long stroke of the frequency of attack.

The utility model belongs to the field of fluid machinery, and discloses a metering pump one-way valve for conveying high-viscosity media, which comprises a valve casing component, a medium channel is arranged on the valve casing component, a valve port is arranged on the medium channel, a spring seat, a spring and a valve ball are sequentially arranged in the medium channel from top to bottom, and the valve ball is used for blocking the valve port. The spring seat comprises a seat body and a stroke limiting column arranged at the lower end of the seat body, the spring is connected between the seat body and the valve ball, and when the valve ball moves upwards to the maximum stroke position under the action of medium pressure, the valve ball abuts against the stroke limiting column. The stroke limiting column protruding downwards is arranged on the spring seat, when the valve ball moves upwards to the maximum stroke position under the action of medium pressure, the valve ball abuts against the stroke limiting column, and therefore the stroke of the valve ball is reduced, the valve ball can fall faster, medium backflow is reduced, and the flow accuracy of the one-way valve is improved. And the compression stroke of the spring is reduced along with the valve ball, so that the service life of the spring is prolonged.

This utility model relates to an auxiliary device for inductor production, including a support frame, a drive mechanism mounted on the support frame, a transport mechanism connected to the drive mechanism, and a tray-stacking auxiliary mechanism mounted on one side of the support frame. The drive mechanism includes a fixed plate mounted on the support frame, a drive component connected to one side of the fixed plate, and a transmission component connected to the output end of the drive component. An arc-shaped guide groove is provided on the other side of the fixed plate. The transport mechanism includes a moving plate, several material-picking components mounted on the moving plate, and a guide component. The transport mechanism of this utility model has multiple material-picking components. Driven by the drive mechanism, the transport mechanism can simultaneously move up and down reciprocatingly during movement. Multiple workstations can be transported simultaneously in one movement, resulting in fast and efficient operation. With the cooperation of the tray-stacking auxiliary mechanism, the transport mechanism only needs to perform the action of placing products onto the tray, shortening the travel distance and further improving work efficiency.

A plunger-type booster brake pump equipped with a one-way valve includes a housing assembly and a plunger assembly. The plunger assembly includes a plunger, a plunger sleeve, and a cup. One end of the plunger sleeve is movably disposed within the inner cavity of the housing assembly, forming a first volume chamber between the plunger sleeve and the inner cavity of the housing assembly. The cup divides the inner cavity of the housing assembly into a second volume chamber and a third volume chamber. A plunger cavity is provided at one end of the plunger adjacent to the plunger sleeve. The plunger cavity has first through holes evenly distributed around its axis that communicate with the second volume chamber, and a one-way valve is provided at the end adjacent to the first volume chamber. During operation, the plunger-type booster brake pump shortens the stroke and increases braking force by controlling the connection and disconnection between the first and second volume chambers through the one-way valve. At the same time, it avoids the pressure drop in the first volume chamber caused by the connection between the first and third volume chambers, solving the problem of the downward bending inflection point in the pedaling force curve and ensuring the braking safety of tractors or large motor vehicles.

This utility model relates to a universal core clamping fixture for cylinder blocks and cylinder heads. The fixture includes a support, movable clamping arms, and a stroke detection component. A pair of movable clamping arms are mounted on the support and slidably connected to it. The two movable clamping arms are close to each other to clamp the sand core. The stroke detection component includes a limiting block, a swing block, and a limiting cylinder. The limiting block is fixedly mounted on one of the movable clamping arms. The first end of the swing block is hinged to the support. The limiting cylinder is mounted on the support, and its piston rod is connected to the swing block. The second end of the swing block is located on the path of the limiting block's movement to limit its displacement. This invention allows the limiting cylinder to rotate the swing block according to the length of the sand core, thereby changing the maximum position that the limiting block can move on the movable clamping arm. While ensuring that the fixture can adapt to sand cores of different lengths, it reduces the stroke of the two movable clamping arms and shortens the clamping time for small workpieces.

The hydraulic core mold device of the concrete hollow slab beam comprises a bottom plate, side plates, end molds and a mold core, the two end molds are erected on the bottom plate in a spaced mode and connected through the side plates, a forming cavity is defined by the end molds, the side plates and the bottom plate, the mold core is erected in the middle of the forming cavity, the mold core comprises two crescent-shaped mold plates arranged oppositely, and the crescent-shaped mold plates are arranged oppositely. The crescent formwork comprises an L-shaped connecting plate and two wing plates arranged up and down, the connecting plate is welded to the wing plates, and every two adjacent wing plates are connected through a hinge on the connecting plate. The whole structure is simple, the hydraulic cylinder is located on the end mold, operation procedures are simplified, and overhauling and maintaining are convenient; the middle supporting plate, the hinge seat and the wing plate of the crescent mold plate are integrally connected through the full-length linkage rod, on one hand, the number of the hydraulic cylinders can be greatly reduced, the mold core is expanded to form a cavity shape or retracted to form a folded shape, forming or demolding of the mold core is facilitated, and on the other hand, the stroke of the piston rod can be shortened by directly pushing the full-length linkage rod through the hydraulic cylinders.