64results about How to "Avoid side force" patented technology

Apparatus for dispensing a free-flowing material comprising a container for receiving the material, a pump connected to the container for conveying the material to a port from which free-flowing material can be dispensed. The pump includes at least one rotatable pump element and a rotatable drive shaft coupled to the pump element, a drive motor, and a coupling attached between the drive shaft and the drive motor. The coupling is radially detachable from the drive shaft.

The invention relates to a test mechanism of an automobile clutch diaphragm spring, in particular to a diaphragm spring tester which can effectively measure stress and deformation and detects the load characteristics thereof. The diaphragm spring tester comprises a tester body bottom plate, a nut, a workbench, a low die, a top die, a tester body top plate, a middle lathe bed plate and a ball screw, wherein the tester body bottom plate, the middle lathe bed plate and the tester body top plate are connected by a stand column; the ball screw is installed on the tester body bottom plate and penetrates from the tester body bottom plate to be connected with an actuating device; the nut in threaded connection with the ball screw is provided with a sleeve; the revolute pair of the ball screw is in threaded connection with the nut by the ball screw to form the upper sliding pair and the lower sliding pair of the sleeve; the other end of the sleeve passes through the middle lathe bed plate to be connected with the workbench; the workbench is provided with the lower die; the top die is installed on the tester body top plate and is above the lower die; and the tester body top plate is provided with a pressure sensor contacting with the top die. The invention has the advantages of high efficiency, high precision, high rigidity, reversibility and the like.

A dental x-ray sensor assembly includes a bite block used for digital imaging, wherein a surface of the bite block includes a deformable material that readily returns to an undeformed position after a biting force is removed therefrom.

A plunger press produces compressed bales of forage, straw, biomass or fibrous mass for agricultural and/or industrial use. The press includes a bale case, a reciprocating plunger structure, at least one material feeding duct laterally leading into a material charge feeding section of the bale case, and at least one plunger structure drive mechanism. The plunger structure compresses respective material charges fed from the feeding duct into the bale case. The plunger structure is subdivided perpendicularly to a reciprocation direction of the plunger structure in the bale case into at least two structurally separated compression surfaces. Each of the compression surfaces is smaller than a cross-section area of the bale case. The compression surfaces are driven substantially parallelly in the reciprocation direction and with a time shift in relation to each other to alternatingly compress material on partial surfaces of the cross-section area.

A ratcheting clip includes a center section, a male end and a female end, the female end having a top half and a bottom half. The male end is configured to be inserted into the female end between the top and bottom half so that opposing sets of teeth hold the male end and female end together. To prevent inadvertent disengagement of the opposing sets of teeth, the male end includes a retaining surface that is configured to interface with a track disposed in the top half of the female end. Once the male end is inserted into the female end, the interface between the retaining surface and the track prevents lateral forces from causing one end to move in a lateral direction with respect to the other end. The interface between the retaining surface and the track further prevents the top half from being lifted upward away from the male end.

The invention discloses a speed limiter and safety gear linkage system based on an elevator. The speed limiter and safety gear linkage system based on the elevator mainly solves the problems that in the prior art, a speed limiter and safety gear linkage system is complex in structure and high in cost, and especially a speed limiter of an elevator without a machine room is inconvenient to install, maintain, inspect and check. The speed limiter and safety gear linkage system based on the elevator comprises a speed limiter, a speed limiter rope, a guiding adjusting mechanism, a lifting winding drum, a linkage mechanism, a lifting steel rope and safety gears, wherein the speed limiter is arranged on the car roof of a lift car of the elevator, the speed limiter rope is wound around the speed limiter, the upper end of the speed limiter rope is fixedly connected with the top of a shaft of the elevator, the lower end of the speed limiter rope is fixedly connected with the bottom of the shaft of the elevator, the guiding adjusting mechanism is used for detecting whether the speed limiter rope is tensioned or not at any time, the lifting winding drum and the speed limiter are arranged in a coaxial mode, the speed limiter drives the lifting winding drum to rotate through the linkage mechanism, and the lifting steel rope is wound around the lifting winding drum. According to the speed limiter and safety gear linkage system based on the elevator, the speed limiter is arranged on the car roof of the lift car of the elevator, one longitudinal speed limiter rope is adopted, the existing speed limiter and safety gear linkage system of a lift car of the elevator is simplified, and the speed limiter and safety gear linkage system of the elevator are optimized and upgraded comprehensively.

An electromechanical brake for motor vehicles having a selflocking-free spindle that is electromotively moved bidirectionally in a longitudinal direction in order to press at least one brake lining against a rotating friction element in an advancing stroke and and in order to release the brake lining in a restoring stroke. The brake also has a plate-shaped coupling member between the spindle and the brake lining. The coupling member engages directly with the spindle and is supported against the brake lining so that the brake lining slides lateral to the longitudinal axis of the spindle. This largely prevents lateral forces, which interfere with the lack of friction of the spindle and can occur when the brake lining is against the friction element. The electromechanical brake is used in passenger motor vehicles.

The invention discloses a precision positioning drive-end pre-tightening device. The precision positioning drive-end pre-tightening device comprises a positioning platform, an actuator, a capacitive sensor, a capacitive sensor support, a pre-tightening block and a thin-film force sensor. A sliding groove is formed in the middle of the positioning platform. The pre-tightening block, the thin-film force sensor and the actuator are sequentially arranged in the sliding groove. The capacitive sensor support is fixed to the positioning platform. Three connecting rods which are sequentially connected with one another through flexible hinges are arranged on one side of a support body of the capacitive sensor support in the axial direction. The end face of the capacitive sensor is parallel to the upper side face of the pre-tightening block, and a gap is formed between the end face of the capacitive sensor and the upper side face of the pre-tightening block. The positioning platform is further provided with a two-stage pre-tightening device for pre-tightening the pre-tightening block. The precision positioning drive-end pre-tightening device can meet the requirements for precision positioning, precision and ultra-precision machining, precision operation and precision measurement and can also meet the requirements of a micro electromechanical system and related fields. The precision positioning drive-end pre-tightening device is simple in technological means and easy to realize, and has outstanding essential characteristics and remarkable progress compared with the prior art.

The invention discloses an electric hoist and a railway truck that adopts the electric hoist. Aiming at the problem that the existing electric hoist has poor climbing capacity, the electric hoist of the invention includes a travel carriage, a traveling electric motor, a driving gear and a rack that engages with each other; the driving gear is fixedly connected with the wheel axle of the traveling wheel and rotates coaxially, the rack is fixedly arranged on the upper surface of the lower edge of the steel I-beam along the length direction of the steel beam. As the gear is driven by the electric motor, then the travel carriage is actuated along the steel I-beam to finish the traveling operation. During the travel of the carriage, the traveling wheel is designed to carry load, the transmission mechanism of the gear rack is designed to provide driving power, and the climbing capacity can reach 20 permillage. Preferably, a regulation electric motor and a corresponding driving mechanism are added to control the engagement and disengagement of the gear rack; the gear rack disengagement mode is adopted under the normal lifting conditions to improve the running speed; and the gear rack engagement mode is adopted when the gradient is relatively higher.

The invention relates to a low-temperature propellant rocket engine, in particular to a flowmeter calibration system and method for the low-temperature propellant rocket engine, and aims to solve the problems that when an existing low-temperature propellant rocket engine uses a flow meter for flow measurement, the measurement accuracy of the flowmeter is low, and only reference flow meter calibration in a short time period can be carried out. According to the technical scheme, the flowmeter calibration system of the low-temperature propellant rocket engine comprises a container filling unit, a container, a supply pipeline, a weighing unit, a rapid recovery container, a weighing filling recovery unit and a recovery unit which are sequentially connected; the container filling unit is used for connecting a tank car and a container; the supply pipeline comprises a temperature sensor, a pressure sensor, and a first isolation valve, a reference flowmeter, a calibration flow adjusting hand valve, a vertical main pipe and N horizontal pipes which are sequentially connected through a pipeline, wherein the horizontal pipes are evenly distributed on the circumference. The invention further provides a flowmeter calibration method of the low-temperature propellant rocket engine.

A squeezing device for a wiping cover of a flat-body wiper, the wiper cover hanging downward and partially detached from a wiper plate of the flat-body wiper in a vertical position of the wiper plate, the wiper plate including a downward facing pressure surface in the vertical position. The squeezing device includes a funnel-shaped squeezing shaft having a counterpressure surface in a lower region of the squeezing shaft. The squeezing shaft is configured to receive the wiper cover and at least a portion of the wiper plate in the vertical position of the wiper plate so that a squeezing pressure of the pressure surface against the counterpressure surface squeezes out the wiper cover. The squeezing shaft includes stabilizing devices configured to stabilize the wiper plate against tipping relative to a first plane from the vertical position. In addition a cleaning system including the squeezing device and a method of squeezing a wiping cover of a flat-body wiper with the squeezing device.

Disclosed is a travel control apparatus for a four-wheel drive vehicle in which the states of engagements between a drive output part for secondary drive wheels and left and right secondary drive wheel axles are each changed to a torque transmission state or a torque transmission interruption state. The ratio of rotational speed of the drive output part to the average of rotational speeds of primary drive wheels is greater than 1. When the engagement states corresponding to the secondary drive wheels on the outer and inner sides of a turning locus have been set to the torque transmission state and the torque transmission interruption state, respectively, the engagement state having been set to the torque transmission state is changed to the torque transmission interruption state upon determination that an accelerator pedal is not operated and the magnitude of lateral acceleration is equal to or greater than a predetermined threshold.

The invention discloses an intelligent pressure relief device. The intelligent pressure relief device comprises a base, a positive-pressure valve cover, a negative-pressure valve cover and a spring, wherein the positive-pressure valve cover is rotationally connected with one side of the base; when the positive-pressure valve cover is closed, the positive-pressure valve cover and the base are in sealing fit; the negative-pressure valve cover is positioned at the inner side of the positive-pressure valve cover, and is smaller than the positive-pressure valve cover; the negative-pressure valve cover is connected with the positive-pressure valve cover through the spring; a hole is formed in the positive-pressure valve cover; and when the negative-pressure valve cover is closed under the effect of spring force, the hole is covered. The intelligent pressure relief device can realize two-way pressure relief thereof through the fit between the positive-pressure valve cover and the negative-pressure valve cover through the spring and the like, and further comprises a control system to realize such functions as remote control, ventilation and pressure re-relief.

The invention discloses a micro-displacement amplification and conversion device. The micro-displacement amplification and conversion device comprises a base (1), a micro-displacement amplification mechanism (2) and an intelligent material driver (8) and also comprises a slight zero adjustment mechanism (3), a pre-tightening adjustment mechanism (4), a linear bearing (5), a displacement conversion mechanism (6) and an output shaft (7), wherein the micro-displacement amplification mechanism (2) is used for amplifying micro-displacement generated by the intelligent material driver (8) according to a lever principle and structural elastic deformation, the displacement conversion mechanism (6) is used for converting linear displacement output from the micro-displacement amplification mechanism (2) into angular displacement to be transferred to the output shaft (7) through a key under the joint effects of a transmission rod (15), a flexible hinge (16), a connection rod (17) and an eccentric wheel (18), and the pre-tightening adjustment mechanism (4) and the micro-displacement amplification mechanism (2) are jointly used for applying pre-tightening force onto the intelligent material driver (8). The micro-displacement amplification and conversion device adopts an integrated design and is compact and high-efficiency in structure, and the function is full and simple.

The invention relates to a process for the mould closure of an injection moulding machine comprising a supporting element (1), a moveable tool clamping plate (13), 5-point toggle levers and a hydraulic drive (25) for the crosshead (2), and also to a mould closure. The crosshead drive is arranged between the supporting element (1) and the moveable tool clamping plate (13). The individual 5-point toggle levers are each embodied with a toggle lever (9), a mould movement lever (11, 11') and an expanding bracket (6). The movements for the mould closure are transmitted to the toggle levers (9) via expanding brackets (6). The expanding brackets (6) act in a central region of the toggle levers (9). The toggle levers (9) are embodied as articulated forks (20, 21), wherein the expanding brackets (6) act in a transverse web (22) of the articulated forks. The principal reaction forces of the mould forces are transmitted symmetrically to the supporting element (1) without lateral forces. The solution makes it possible to achieve a maximum pivot angle for the toggle levers (9), to use long toggle levers (9) and to achieve a maximum opening stroke for the mould halves.

A hinge has a side part fixable on a wall and a hinge part, which is pivotable in relation to the side part and is fixable on a door. Two levers are provided on the side part and the hinge part, which are each rotatably mounted on the side part and on the hinge part, and a linear damper having a housing and a piston rod is arranged in the side part.

The invention discloses an arm pin device for a retractable arm type crane. The arm pin device comprises a pin shaft, wherein the pin shaft is used for detachably fixing adjacent two joint arms; the pin shaft is provided with a central hole which extends along an axial direction of the pin shaft; a first bolt penetrates through the central hole and is fixedly connected with the axial direction of the pin shaft and movably connected with the peripheral direction of the pin shaft. The arm pin device further comprises a core shaft, wherein one end of the core shaft is fixedly connected with a support of an inner joint arm; the core shaft is provided with a first inner thread matched with the first bolt; the core shaft penetrates through the first thread to be engaged with the first bolt. Therefore, the arm pin device disclosed by the invention adopts a central lifting and pressing structure which takes the core shaft as a main body; in a pressing-down process of the arm pin device, a stressing direction is arranged along the axis of the pin shaft, so that the generation of lateral force is avoided and the joint arms can be smoothly detached. The invention further discloses the retractable arm type crane comprising the arm pin device.

A drive unit (10) actuates drives in a motor vehicle with a first housing part (12), in particular a pole pot (12), and a second housing part (14), in particular a gear housing or electronic housing (14, 15), which can be connected with connecting elements (40), wherein the first housing part (12) features receptacles (38) for the connecting elements (40), wherein the receptacles (38) are embodied as centering holes (36) for corresponding centering pins (48), which are arranged on the second housing part (14).

The invention discloses a double-action cutter driving device of a combine harvester. The device includes a bottom cover, a box body, a pulley, a small bevel gear, a large bevel gear, a gear frame welding assembly and a gear welding assembly. The upper portion of the bottom cover is provided with a box body, the box body is internally provided with an inner gear ring, the upper portion of the box body is provided with an upper cover, a belt pulley shaft is installed between the upper cover and the box body, the right end of the belt pulley shaft is provided with a pulley, the small bevel gear is installed on the belt pulley shaft, the small bevel gear is meshed and connected with the large bevel gear, the large bevel gear is installed on the gear frame welding assembly, and the lower portion of the gear frame welding assembly is provided with the gear welding assembly. A cutter bar is connected with a drive device through a rack connection rod with a thread, cutter bar lateral force caused by manufacturing errors and installation errors can be effectively avoided, and the problems are solved that an existing double-action cutter crank connecting rod driving mechanism has large inertia force, low transmission efficiency and a crank offset phenomenon because of a crank and a connection rod, a cutter bar produces lateral force, the operation reliability is poor, and the size of the mechanism is large.

The invention relates to a guide assembly as well as a vertical loading device and method and belongs to the technical field of vertical loading test devices. The guide assembly comprises a first annular sleeve, second annular sleeves and linear roller bearings, wherein the first annular sleeve is located between the two adjacent second annular sleeves, the first annular sleeve and the second annular sleeves are coaxially arranged, a guide hole allowing penetration of a loading mandrel is formed, a plurality of grooves are formed in the inner surfaces of the second annular sleeves and extend in the axial directions of the second annular sleeves, and the linear roller bearings are arranged in the grooves, in one-to-one correspondence with the grooves and in clearance fit with the loading mandrel. By means of the vertical loading device equipped with the guide assembly, deflection of the loading mandrel due to lateral force is avoided effectively; with adoption of the vertical loading method, vertical load can be transferred effectively, the lateral force is prevented, high load and large-displacement loading of an actuator can be realized, test precision is high, and demands of various vertical loading tests can be met.