67results about How to "Strong anti-eccentric load ability" patented technology

A forging apparatus comprises an upper beam (2), a lower beam (18) and at least one column (1). The lower end of the column (1) is fixed on the lower beam (18), the upper beam (2) is disposed at the upper end of the column (1), a movable beam driving apparatus is disposed on the upper beam (2), and the movable beam driving apparatus is connected through a spiral mechanism to a main hydraulic cylinder (16) and a return cylinder (14) capable of cushioning. The forging apparatus may connect the spiral mechanism in the driving apparatus, the main hydraulic cylinder (16) and the return cylinder (14) together without being provided with the movable beam. The forging apparatus is characterized in that the structure is simple, and the operation is convenient and fast; the structural strength is high, the vibration is small, the anti-unbalanced loading capability is strong, the manufacturing, assembly and repair are convenient, and the cost is low.

The invention discloses a four-cylinder synchronous hydraulic system relating to a synchronous hydraulic system synchronously lifting through a four-corner driving platform. The system can carry out online automatic compensation to ensure four-point synchronous lifting. The four-cylinder synchronous hydraulic system comprises a master cylinder A, a slave cylinder A, a master cylinder B, a slave cylinder B, an oil pump, two oilway reversing control valve banks and a hydraulic oil tank, wherein the master cylinder A, the slave cylinder A, the master cylinder B and the slave cylinder B respectively drive four corners of a horizontal table top, and the two oilway reversing control valve banks are arranged between the oil pump and the master cylinder and the slave cylinder; the rod cavities and the rodless cavities of the master cylinders and the rodless cavities and the rod cavities of the slave cylinders are in serial and parallel switching connection through a two-position four-way solenoid valve, and the working areas of the rod cavities of the master cylinders are equal to those of the rodless cavities of the slave cylinders. The four-cylinder synchronous hydraulic system comprises two same independent serial / parallel cylinder synchronous circuits; under the normal condition, master oil cylinders and slave oil cylinders in each circuit are synchronous through serial connection. When the master oil cylinders and the slave oil cylinders are asynchronous due to the leakage of the oil cylinders, the four oil cylinders can be lifted to top dead centers, and the master oil cylinders and the slave oil cylinders are switched into a parallel mode through the two-position four-way solenoid valve and then are switched to a serial mode after the four oil cylinders are synchronous.

The invention discloses an integration series connection cylinder with an adjustable stroke. The integration series connection cylinder with the adjustable stroke comprises a front piston, a back piston, a front cylinder body, a back cylinder body, a piston rod I, a piston rod II, a cylinder front body, a cylinder middle body, a cylinder cover and a set of pull rods. The integration series connection cylinder with the adjustable stroke is characterized in that a front hydraulic cylinder is composed of the cylinder front body, the front cylinder body, the cylinder middle body, the front piston, the piston rod I and the like, a back hydraulic cylinder is composed of the cylinder middle body, the back cylinder body, the cylinder cover, the back piston, the piston rod II and the like, and the front hydraulic cylinder and the back hydraulic cylinder are connected through the cylinder middle body, the piston rod II and the set of pull rods in series to form the series connection cylinder. The integration series connection cylinder with the adjustable stroke is high in synchronization precision and anti-unbalance loading capability, the stroke is adjustable, and the stroke adjusting amount of a plate bending machine can be directly controlled; the integration series connection cylinder with the adjustable stroke is high in integration degree, the hydraulic system is simplified, the control capability is high, and the integration series connection cylinder with the adjustable stroke is safe and reliable.

The invention discloses an under-drive punch press which comprises a rack, an upper working platform, a servo drive mechanism, a crankshaft connecting rod mechanism and a toggle rod mechanism, wherein the rack comprises a bottom plate and four upright posts; the upper working platform slides along the upright posts; the servo drive mechanism, the crankshaft connecting rod mechanism and the toggle rod mechanism are arranged at the lower part of the upper working platform; the toggle rod mechanism comprises an upper toggle rod, a lower toggle rod and a toggle shaft; one ends of the upper toggle rod and the lower toggle rod are connected by virtue of the toggle shaft; the servo drive mechanism drives the crankshaft connecting rod mechanism; the other end of the connecting rod of the crankshaft connecting rod mechanism is connected to the toggle shaft of the toggle rod mechanism in a sleeving manner; the other end, namely the upper end, of the upper toggle rod is hung onto a mounting shaft below the upper working platform; the other end, namely the lower end, of the lower toggle rod is fixed on the bottom plate by virtue of a second mounting shaft; and four corners of the upper working platform are arranged on the upright posts in a sleeving manner, and the upper working platform moves up and down along with the upright posts.

The invention relates to a high-speed clutch type spiral closed punch press. The high-speed clutch type spiral closed punch press comprises a press body, a sliding block, lifting supporting arms, lifting rods, pneumatic return cylinders, a copper nut, a screw rod, a radial cylindrical roller bearing seat, a radial cylindrical roller bearing, a brake disc, a brake cylinder, a one-way ball bearing,a belt wheel type large flywheel, a deep groove ball bearing, a friction clutch disc, friction blocks, a piston, a cylinder body, a spring piston guide screw rod, a piston return spring, a piston guide screw rod, a right upper fastening nut, a motor and a small belt pulley. According to the high-speed clutch type spiral closed punch press, the sliding block stroke is automatically adjusted, the motor power is reduced, power is saved, and energy saving is remarkable; the sliding block can stop at any position of the press stroke, the service life of a die is long, the unbalance loading resistance is high, and multi-station die forging can be achieved; the sliding block rapidly returns, the production efficiency is high, and the output energy is high; and the sliding block striking speed ishigh, the striking force is large, environmental friendliness is achieved, the overload safety protection effect is achieved, and operation is reliable. The high-speed clutch type spiral closed punchpress can be widely applied to the forge piece pressure forming process, in particular to the stamping process.

The invention relates to a novel marine counterweight pipe coating trolley, which is mainly composed of hydraulic motors, supporting hydraulic cylinders, supporting wheels, bases, supporting seats, a control cabinet, a lifting platform, a lifting hydraulic cylinder, scissors fork arms, a chassis, wheels, a walking hydraulic motor, retractable supporting legs and weighing sensors; the supporting wheels are two pairs of supporting wheels different in spacing; the supporting wheels at a large spacing therebetween are used for supporting a large-caliber pipe, while the supporting wheels at a small spacing therebetween are used for supporting a small-caliber pipe; the supporting seats can be adjusted by certain angles by means of expansion and contraction of piston rods of the supporting hydraulic cylinders, such that an application range to pipes is widened; a pipe casting height of the lifting platform is realized by means of a hydraulic support-scissors fork machine lifting structure, which has good stability; the weighing sensors are capable of weighing cast concrete in real time during pipe coating, and the control cabinet is capable of controlling a rectilinear motion speed, a pipe rotating speed and a lifting height of the coating trolley in real time according to feedback data from the weighing sensors. The coating trolley provided by the present invention is wide in pipe application range, capable of weighing the coated concrete in real time, stable in mechanical structure, and high in automation degree.

A multi-cylinder synchronized hydraulic lifting / lowering system and method, applicable in lift systems such as a hydraulic elevator and a construction lifting / lowering platform. The system comprises a fluid replenishing circuit (1), a volumetric speed governing and energy recovery circuit (2), a manual lifting / lowering circuit (3), a synchronous locking circuit (4), a hydraulic cylinder (5), and a tilt angle sensor (6-1). The fluid replenishing circuit (1) is used for replenishing any shortage of a hydraulic fluid in a closed loop system caused by regulation of the synchronous locking circuit (4) and system leakage and reducing increases in the temperature of the hydraulic fluid. The volumetric speed governing and energy recovery circuit (2) provides the system with power, speed governing, and energy recovery. The function of the manual lifting / lowering circuit (3) is to manually lift / lower a platform when the system malfunctions. The function of the synchronous locking circuit (4) is to regulate multiple hydraulic cylinders for synchronized lifting / lowering and to lock tight the cylinders when the platform is stationary. The tilt angle sensor (6-1) detects in real-time the position and posture of the platform and feeds back to a control center, thus implementing closed loop control. The system is highly efficient and power saving and implements energy recovery and precise synchronization of multiple cylinders; the lifting / lowering platform has strong side-load resistance, operates steadily, and is high reliable.

The invention discloses a sheet hydraulic-forming hydraulic press which is characterized by essentially comprising an underbeam, an upright post arranged on the underbeam, a top beam arranged on the upright post, a stretching beam connected on the upright post in a sliding manner, a compound master cylinder arranged on the top beam, a coaxial link deep-drawing and blank holding device arranged bellow the stretching beam, a liquid chamber arranged on the underbeam, a support oil tank which comprises a hydraulic power control system, a supercharger, etc. The underbeam, the upright post and the top beam are connected together by upright post nuts to form a rigid body; the compound master cylinder is essentially composed of a cylinder body fixed on the top beam, a master cylinder piston arranged in the cylinder body, a quick rod bush arranged on the master cylinder piston, a quick rod arranged in the rod bush, an embedded bank holding cylinder piston arranged in a master cylinder piston and flanges arranged at the mouth of the cylinder body; the master cylinder piston is connected with the stretching beam by the flanges; the embedded bank holding cylinder piston is connected with thecoaxial link deep-drawing and blank-holding device which is essentially composed of a drawing slide, a blank holding slide which is coaxially connected to the drawing slide and is connected with the embedded bank holding cylinder piston and a male die which is fixed on the drawing slide. Compared with the prior art, the hydraulic press of the invention has the advantages of possessing dies with universality, reducing die cost and shortening production cycle.

The invention provides an upper jacking system with a multi-station jacking function. The upper jacking system comprises a hydraulic cylinder body mounted in a center hole of a sliding block, an upperoil inflow pipeline, a lower oil inflow pipeline, a piston, a piston rod, a flange plate, a check disc mounted on the flange plate through a flange plate countersunk bolt, a base, check disc countersunk bolts, a guide sleeve mounted in a stepped hole in the center of the base, a concave guide column located in the guide sleeve, matched with the guide sleeve and mounted at the end of the piston rod through horizontally-arranged connecting pins, a jacking bottom disc mounted on the end face of the tail end of the concave guide column through jacking bottom disc countersunk bolts and multiple jacking rods mounted on the jacking bottom disc through threaded connection. The upper jacking system is large in jacking force, rapid in action response, high in production efficiency, simple in transmission chain, high in jacking precision, flexible in operation, suitable for automatic production, high in production efficiency, long in service life, high in anti-unbalance-loading capacity and suitable for multi-station forging occasions, and can be widely used for a screw press and especially applied to a large screw press.

The invention discloses a large-stroke multi-station drawing press in the field of punching machines. The large-stroke multi-station drawing press comprises a press body, a transmission shaft is arranged on the upper portion of the press body, a first gear is arranged in the middle of the transmission shaft, second gears are arranged at the two ends of the transmission shaft, two power shafts are arranged on the press body, and eccentric gears are arranged on the power shafts and engaged with the corresponding second gears. The eccentric gears are provided with connecting rods, and the lower portions of the connecting rods are connected with bulb threaded rods through threads. A sliding block body is arranged below the press body, an external support is arranged on the upper portion of the sliding block body, an oil cylinder is arranged in the external support, bulb supports are arranged in the oil cylinder, and bulbs abut against spherical face grooves. Bulb cover plates are arranged between the external support and the bulb threaded rods, an external cover plate is arranged on the outer side of the external support, an upper die plate is arranged on the lower portion of the sliding block body, a lower die plate is arranged on the lower portion of the press body, a multi-station upper die is arranged on the upper die plate, and a multi-station lower die is arranged on the lower die plate. The large-stroke multi-station drawing press adopts the eccentric gears, the stroke of the press can be increased, the eccentric gears on the two sides are stable in transmission, the span of points of force application is large, and the unbalance loading resisting capacity is high.

A multi-motor-driven, horizontally placed end face cam servo press, including an upper body, two servo motors are symmetrically installed on the upper body, the output shaft of the servo motor is equipped with a small gear, and the two small gears are connected to the large gear. Cooperate, the large gear is connected to the shaft, the shaft is connected to the upper body, the large gear is connected to the end face cam, the end face cam cooperates with the upper end of the guide plunger type push rod, and the lower end of the guide plunger type push rod is connected to the active link. The connecting rods are respectively connected with the upper connecting rod and the lower connecting rod. The lower connecting rod is connected with the push rod, the adjusting screw and the slider. The small gear is driven by the servo motor to rotate, and the small gear drives the end face cam to move through the large gear, and then drives the guide plunger type push rod to do reciprocating linear motion, and drives the slider to move through the active connecting rod, upper connecting rod, lower connecting rod and push rod After the forging is completed, the invention has high rigidity and strength, and the working characteristics of the motor are significantly improved.

The invention discloses an energy-saving and environment-friendly high-energy screw press. The energy-saving and environment-friendly high-energy screw press comprises a machine body, a circular guiderail, a circular guide rail cover, a spherical bearing seat, a screw rod, a bearing fixed inner body, a thrust ball bearing, a convex cover, an O-shaped sealing ring, a bearing outer body, a lower sealing ring, a lower sealing ring cover, a deep groove ball bearing, a deep groove ball bearing cover, a main motor, a driving pulley, a driven pulley-type flywheel, a multi-layer positioning plate, aroller bearing seat, a pushing self-aligning roller bearing, an inner sealing ring, a friction clutch disc, a friction block, a pneumatic conical separation-reunion piston, a conical cylinder body, aguide screw rod, a cylinder body fastening nut, an up-down adjusting bolt, a back tightening nut, a copper nut, a top surface baffle plate, a sliding block, a lifting frame, a lifting rod, a return stroke lifting cylinder and an upper sealing ring. According to the energy-saving and environment-friendly high-energy screw press, the output energy is high, the transmission power is small, power is saved, energy saving is remarkable, the return stroke is quick, the production efficiency is high, the anti-bias load ability is high, multi-position die forging is achieved, environmental protection is achieved, the service life is long, and the safety of the whole machine is ensured; and the energy-saving and environment-friendly high-energy screw press can be widely used in the forging pressureforming process.

A forging apparatus comprises an upper beam (2), a lower beam (18) and at least one column (1). The lower end of the column (1) is fixed on the lower beam (18), the upper beam (2) is disposed at the upper end of the column (1), a movable beam driving apparatus is disposed on the upper beam (2), and the movable beam driving apparatus is connected through a spiral mechanism to a main hydraulic cylinder (16) and a return cylinder (14) capable of cushioning. The forging apparatus may connect the spiral mechanism in the driving apparatus, the main hydraulic cylinder (16) and the return cylinder (14) together without being provided with the movable beam. The forging apparatus is characterized in that the structure is simple, and the operation is convenient and fast; the structural strength is high, the vibration is small, the anti-unbalanced loading capability is strong, the manufacturing, assembly and repair are convenient, and the cost is low.

The invention relates to a novel marine counterweight pipe coating trolley, which is mainly composed of hydraulic motors, supporting hydraulic cylinders, supporting wheels, bases, supporting seats, a control cabinet, a lifting platform, a lifting hydraulic cylinder, scissors fork arms, a chassis, wheels, a walking hydraulic motor, retractable supporting legs and weighing sensors; the supporting wheels are two pairs of supporting wheels different in spacing; the supporting wheels at a large spacing therebetween are used for supporting a large-caliber pipe, while the supporting wheels at a small spacing therebetween are used for supporting a small-caliber pipe; the supporting seats can be adjusted by certain angles by means of expansion and contraction of piston rods of the supporting hydraulic cylinders, such that an application range to pipes is widened; a pipe casting height of the lifting platform is realized by means of a hydraulic support-scissors fork machine lifting structure, which has good stability; the weighing sensors are capable of weighing cast concrete in real time during pipe coating, and the control cabinet is capable of controlling a rectilinear motion speed, a pipe rotating speed and a lifting height of the coating trolley in real time according to feedback data from the weighing sensors. The coating trolley provided by the present invention is wide in pipe application range, capable of weighing the coated concrete in real time, stable in mechanical structure, and high in automation degree.

The invention belongs to the technical field of foundation engineering, and relates to a preparation method of an end part port sealing precast concrete expanding head tubular pile. Through changing aconnecting mode of an expanding head and a concrete pipe pile, the requirement of the end part port sealing precast concrete expanding head tubular pile for improving the bearing capacity in a mechanical aspect can be met, then the sedimentation of a pile body can be reduced, and the influence of high temperature and residual stress caused by welding can be avoided; and meanwhile, an installationprocess of an end part sensor is improved, a spoke sensor is installed at a pile end of the end part port sealing precast concrete tubular pile, the pile end resistance in a pile sinking process canbe measured; and the friction resistance of a pile side can be calculated according to a pile pressing force, and the change rule of a soil layer in the pile sinking process can be deduced through thepile end resistance and the pile side friction. The preparation method of the end part port sealing precast concrete expanding head tubular pile is simple, convenient to test, simple and convenient to install, high in mechanical degree and strong in field operability, pre-splicing is not needed, and the method is suitable for on-site installation in a piling process.