134results about How to "Adjust the preload" patented technology

The security device comprises (i) a first connector ( 12 ) for connection to a telecommunications device ( 14; 15 ) such as a land-line telephone, mobile telephone or the modem of a computer, (ii) a second connector ( 16 ) connected to a telecommunications line ( 18 ), and (iii) a normally closed switch ( 20, 21 ) having a closed position in which a signal pathway ( 22, 23 ) within the security device between the first connector ( 12 ) and the second connector ( 16 ) is enabled and an open position in which the signal pathway ( 22, 23 ) is interrupted. A control device ( 24, 25 ) for controls the position of the switch ( 20, 21 ). A programmable memory ( 26, 27 ) stores allowed signal sequences and at least one authorised pass number. A comparator ( 30 ) is in operative connection with the control device ( 24, 25 ) and compares signals on the pathway ( 22, 23 ) with the allowed stored signal sequences. The control device ( 24, 25 ) opens the switch ( 20, 21 ) when a signal on the pathway ( 22, 23 ) does not match one of the stored signal sequences. A programmer ( 32 ) receives pass numbers and programming signals from a remote telecommunications device ( 52 ) via the telecommunications line ( 18 ). The programmer ( 32 ) includes an authorised pass number recognition device ( 34 ) for comparing a received pass number with the authorised pass numbers stored in the memory ( 26,27 ). The memory ( 26, 27 ) can be reprogrammed only when an authorised pass number is received.

The invention provides a full automatic tab welding device, which is used for solving the problems of poor welding quality and low production efficiency of a cathode tab in the prior art. The full automatic tab welding device comprises an engine base, and further comprises an actuating mechanism, wherein guide rails are vertically arranged on the engine base, and a positioning mechanism used for positioning a battery cell is arranged on the guide rails; the actuating mechanism comprises an upper welding electrode movably arranged at the upper parts of the guide rails and a lower welding electrode moveably arranged at the lower parts of the guide rails, and a following mechanism is used for controlling the motion of the upper welding electrode is arranged on the upper welding electrode. The device realizes full automatic mechanization of welding process of the tab during the production technology of cylindrical batteries, saves manpower, greatly improves both production efficiency and welding quality of batteries, is convenient to maintain, is artistic in structure, is accurate in location, is reliable for welding and has multiple functions.

The invention discloses a torque sensor capable of measuring six-dimensional non-coplanar force. In the torque sensor, nine sensors are arranged on three installation bases in three groups respectively; the end parts of the installation bases are connected with end covers; the two ends of an X-axis connecting rod are arranged in through holes of two installation bases respectively; and a Y-axis connecting rod is arranged in a through hole of a third installation base. The torque sensor designed by the invention is arranged on a carrier by using a loading flange. When pressure is applied to the upper end of Y-axis connecting rod, nine one-dimensional sensors which are connected with a T-shaped connecting rod are subjected to force of different magnitudes and have different outputs under the actions of six-dimensional non-coplanar force and three-dimensionalal non-coplanar orthogonal torque. Analysis on the force structure according to the theoretical mechanics indicates that the relation between the output force information of the nine one-dimensional sensors and the applied six-dimensional non-coplanar force is: the magnitude of the six-dimensional non-coplanar force can be obtained by only measuring the output numerical values of the nine one-dimensional sensors.

The invention relates to a synchronous feeding mechanism for a tongue depressor machine, which comprises two paired rollers connected in rolling way and two feeding rollers; the lower paired roller is fixed; the roller shaft of the upper paired roller is mounted on a pre-tightening spring; the pre-tightening spring bears against a pushing block; the pushing block is mounted on the shell through screws and can be adjusted in position by the screws; a guide roller is arranged between the upper feeding roller and each of the two paired rollers; and the lower side of the guide roller and the lower side of the upper paired roller are located on the same horizontal height. The synchronous feeding mechanism for the tongue depressor machine provided by the invention has the beneficial effects that: feeding speeds of two material belts are adjusted by the pre-tightening spring to ensure that feeding speeds of two feeding rollers are completely the same. And pre-tightening force of the pre-tightening spring can be adjusted in real time according to different thicknesses, friction coefficients and feeding speeds of material belts, so that better synchronization effect is realized. While the stability of the paired rollers can be better ensured by the arrangement of a guide wheel and the tension force in other directions may not be acted on the paired rollers.

The invention discloses a modularization sheep foot simulation mechanical foot device which comprises an interface shell, a foot installation plate, plugging mechanisms and foot mechanisms. The interface shell is internally provided with a connection block. A plugging hole is formed in the connection block in the vertical direction, the top face of the foot installation plate is provided with a plugging shaft, and the bottom face of the foot installation plate is used for installation of the foot mechanisms. The plugging shaft penetrates into the plugging hole, due to the fact that the two sets of plugging mechanisms sequentially penetrate through the connection block from the two sides of the interface shell and the end of each plugging mechanism can be located in the plugging shaft, positioning between the interface shell and the foot installation plate is achieved. Detaching between the interface shell and the foot installation plate is achieved by pulling the plugging mechanisms. The foot mechanisms are designed by simulating the sheep feet and are connected with a left hoof section and a right hoof section through two branch chains respectively. Each branch chain is provided with a buffering and energy storing spring to achieve vibration reducing and energy storing. The modularization sheep foot simulation mechanical foot device has the advantages that fast replacing between the foot mechanisms and legs of a robot can be achieved, and the modularization sheep foot simulation mechanical foot device is suitable for leg type and wheel leg type robots to walk on complicated grounds in the open gas.

The invention discloses a solar cell array simulation device comprising a frame, an orientating mechanism, a suspension gear, a gap hinge, solar cell array sailboards, a swinging mechanism and a unfolding mechanism, wherein the orientating mechanism is arranged on the side part of the frame; the swinging mechanism is arranged on the orientating mechanism; the suspension gear is arranged on the top of the frame; the suspension gear and the orientating mechanism are connected with the solar cell array sailboard; the gap hinge is arranged between the solar cell array sailboards; and the unfolding mechanism is arranged on the solar cell array sailboards. According to the solar cell array simulation device, the kinematic characteristics for unfolding a solar cell array under different driving parameters can be tested, and the unfolding of the solar cell array under the conditions of different hinge gaps and various mechanical faults can be simulated.

The invention relates to a pressure-limiting valve with a master grade and a pre-control grade. The pre-control grade is used for controlling opening movement of the master grade. The pre-control grade has spring elements (8), pre-tightening forces of which are used for determining opening pressure of the pressure-limiting valve. The spring elements are supported on a guide piston (19). The guide piston can be movably arranged in a housing of the pressure-limiting valve and is provided with a guide chamber (17) at the rear portion. The guide chamber is sized depending on the position of the guide piston. A control fluid of the pre-control grade flows into the guide chamber at the rear portion such that pre-tightening forces of the spring elements (8) increased by movement of the guide piston after the pre-control grade is opened. A pressure-relief grade is arranged and used for limiting pressure of the pre-control grade and provided with a valve element (12) pre-tensioned to reverse to a valve seat (14). Hence, at least one outflow opening (26) can be arranged between the valve element and the valve seat when the valve element and / or the valve seat are formed for closing the pressure-relief grade. The fluid can flow out of the outflow opening from the pre-control grade.

The invention discloses an adjusting device used for adjusting discharge volume of the fluid static force pump and provided with a power adjusting valve. The power adjusting valve is provided with a first port, a second port, a third port and a valve slide block. Hydraulic pressure oil can flow into the first port from a pressure port of the pump. The second port can be connected with an oil tank. The third port is connected with a servo cavity in a servo piston. The valve slide block can be loaded through controlling pressure in a condition when the discharge volume of the pump is decreased and the valve slide block can be loaded with a spring device in a condition that a swing angle is increased. The invention aim at adjusting different power levels by arranging the adjusting device adopting the above structure. The device is realized by that the valve device can load control pressure that is amount to pressure in a pressure port of the pump or can load control pressure decreasing relative to pressure in the pressure port of the pump based on adjustment of the valve slide block of the power adjusting valve.

The invention discloses a motorcycle shock absorber with damping force adjustable. The problems that an existing shock absorber is poor in adjusting capacity of damping force, and the damping force cannot be adjusted and restored are solved. The motorcycle shock absorber comprises a piston cylinder, a piston and a piston rod, the piston is provided with a rebound valve, and the rebound valve is communicated with a channel. A radial through hole is formed in the piston rod, and is communicated to the channel, and an ejector pin used for adjusting the flow of the radial through hole is arranged inside the piston rod. The flow of the radial passing of the piston rod is adjusted through the ejector pin, then the flow of the channel of the rebound valve is adjusted, and therefore the damping force is adjusted and restored, the riding feedings of different riders are met, and the shock absorption performance of the shock absorber is improved. The motorcycle shock absorber is suitable for the shock absorption of motorcycles, and especially suitable for the shock absorption of racing motorcycles.

Wood furniture generates dry shrinkage and wet expansion due to changes of relative humidity in the air. Conventional plate-type solid wood furniture is usually connected by three-in-one connecting pieces, because the three-in-one connecting pieces are in fixed rigid connection, the three-in-one connecting pieces cannot stretch along with a solid wood furniture plate when the solid wood furnitureplate is warped due to dry shrinkage and wet expansion, and splitting of the plate is often caused. The invention provides a telescopic flexible connecting piece which can stretch together when a plate is warped and deformed, thereby effectively avoiding splitting of the plate.

The invention discloses an auxiliary clamping device for a disc-hydraulic-type turbine disc tool. The device comprises a clamp base, a beam, a left column, a right column and two pressure foot adjustment assemblies. The lower ends of the left column and the right column are symmetrically arranged on the clamp base, and the tops of the left column and the right column are fixedly connected with theleft and right ends of the beam. A downward tip is arranged in the middle of the beam, the two pressure foot adjustment assemblies are symmetrically arranged on the inner sides of the left column andthe right column, and each pressure foot adjustment assembly is composed of an oil cylinder, an upper lining, a pull rod, a pressure foot, a spring, a spacer, a lower lining, a nut, a disc spring, anadjustment lock nut and a positioning device. The auxiliary clamping device for the disc-hydraulic-type turbine disc tool applies stable and reliable pressure to the tool or a workpiece with the helpof pull force of the disc springs, the rotation tip is adopted for assisting in supporting and positioning the rotation tool or the workpiece, reinforcement is performed under the condition that processing is not influenced, and a turbine disc is conveniently and quickly clamped.

The invention provides an overcurrent electromagnetic release which comprises a armature, a reset spring and an annular yoke rack. The armature moves upwards to control a corresponding system to release when short circuit currents pass a system circuit. The reset spring drives the armature to move downwards to reset. The yoke rack is provided with a peripheral annular wall and a central hole. The central hole is enclosed by peripheral annular wall, extends along a front-rear direction, and allows the system circuit to penetrate to form an electromagnet. An upper notch is formed in the inner wall surface of the top annular wall of the yoke rack. The armature is assembled into the upper notch in a guide moving manner along an up-down direction. The overcurrent electromagnetic release has the advantages that the yoke rack is added to increase the electromagnetic attractive borne by the armature of the whole release, the application range of the electromagnetic release is expanded, and electromagnetic release miniaturization is benefited.

The invention discloses an executing system of a fluid micro-spraying device, and the fluid micro-spraying device with the executing system. The executing system comprises a base body, a movable element, an executing mechanism an adjusting element and a plurality of spacer shims, wherein an executing mechanism installation cavity is limited in the base body; a positioning hole communicating with the executing mechanism installation cavity is formed in the base body; the movable element can be movably arranged in the positioning hole; the executing mechanism can be movably arranged in the executing mechanism installation cavity, and is connected with the movable element so as to control the movable element to move; the adjusting element is arranged in the executing mechanism installation cavity and is connected with the executing mechanism so as to adjust a working position of the executing mechanism; the spacer shims are arranged between an inner wall surface of the executing mechanism installation cavity and the adjusting element so as to adjust a pre-tightening force of the executing mechanism. According to the executing system of the fluid micro-spraying device provided by the embodiment of the invention, the pre-tightening force of the executing mechanism can be adjusted, so that the movable displacement of the movable element is adjusted so as to adjust a fluid spraying effect of the fluid micro-spraying device.

The invention discloses a shock absorber assembly for a motor vehicle and a method of assembling the same. The shock absorber assembly for a motor vehicle comprises an oil cylinder, a piston rod and asupporting base, the oil cylinder is provided with an adjusting column protruding outwards, the adjusting column is sleeved with a movable block, and the movable block is composed of a rotating partand a tray part; a first spring assembly is arranged between the movable block and the supporting base, a second spring assembly is arranged between the adjusting column and the supporting base, and the second spring assembly is located in the first spring assembly. The two spring assemblies are composed of springs, upper limiting sleeves, lower limiting sleeves and wrinkling pieces, and the wrinkling pieces are arranged to transmit axial force and plastically deform when the axial force exceeds a threshold value. The spring assemblies are additionally arranged to replace an existing stop buffer, and the structural layout can be simplified; the two spring assemblies are each provided with a wrinkling piece, and therefore secondary threshold value control can be achieved. The displacement of the movable block on the adjusting column can control the pre-loading force of the outer-layer spring, and then the axial force threshold value which can be borne by the springs can be adjusted.

The invention provides a high-accuracy wall temperature measuring device. The high-accuracy wall temperature measuring device comprises a base part, a probe part and a metal guide tube, wherein the tail end of the metal guide tube is elastically connected with the base part, while the front end of the metal guide tube is movably connected with the probe part; the probe part comprises a metal wire tube, a probe body, a temperature-sensing element and a metal contact piece, all of which are orderly and fixedly connected with each other, and wherein one end of the metal wire tube is nested into the metal guide tube and the other end of the metal wire tube is fixedly connected with the probe body. The high-accuracy wall temperature measuring device is fixed above the wall; the probe is kept into close contact with the wall by virtue of the elastic force of a spring in the probe base to measure the temperature of the wall; besides, the device is high in temperature sensing capability, high in output signal strength and high in measurement accuracy.

The invention discloses a high-precision compact integrated joint structure. The high-precision compact integrated joint structure comprises a rotating shaft, a speed reducer, a motor, an integrated band-type brake, a relative encoder, an absolute encoder and a joint outer shell, wherein the rotating shaft is a hollow feed shaft, a bearing is arranged between the motor and the hollow feed shaft, and a precision bearing is arranged between the joint outer shell and the hollow feed shaft; the absolute encoder is mounted at one end, extending out of the joint outer shell, of the hollow feed shaft; and the relative encoder and the integrated band-type brake are both mounted in the motor, and the integrated band-type brake is coaxial with the motor. According to the high-precision compact integrated joint structure, the band-type brake, the internal and external encoder reading heads and a motor stator are directly mounted on the joint outer shell at the same time, the band-type brake is placed inside the motor, extra space does not need to be occupied, and the axial length of a joint is reduced; and the feed shaft is connected with the crossed roller bearing, a relative encoder coded disc and a motor input shaft are integrated, the number of parts is reduced, the weight of the joint is reduced, the compactness is improved, and the anti-overturning moment of the joint and the jointoutput precision are improved.

The invention discloses a material self-unloading device. The material self-unloading device is characterized by comprising a fixing board, a rotary shaft, a material board, a first extension spring, a second extension spring and a spring connection board, wherein the material board is fixedly connected with the rotary shaft; the rotary shaft is connected with the fixing board through a rotary connection structure; the top ends of the first extension spring and the second extension spring are hinged to the fixing board; the bottom ends of the first extension spring and the second extension spring are hinged to the spring connection board; the spring connection board and the material board are fixedly connected through the rotary shaft. By arrangement of a mechanical device, materials are unloaded in a swinging mode through action of gravity and elasticity to solve the problem that an additional power source is needed in the material unloading process, unloading of the materials is accelerated and the recycling work of the material board is rapidly finished by utilization of the characteristic of the extension springs, and therefore a large number of energy sources and a large amount of time are saved, and the production efficiency is improved.

The invention provides a rear press roller mechanism for cylinder forming of a paper bag machine. The rear press roller mechanism comprises a rack; multiple sets of lower rolling shafts are arranged on the rack; and an upper roller conveying mechanism is arranged above the lower rolling shaft. The upper roller conveying mechanism comprises a crossbeam fixed on the rack; an upper roller module which can be adjusted in height is arranged on the crossbeam and comprises a mounting plate; a plurality of upper rollers which are in one-to-one tangency with the lower rolling shafts and can independently and automatically adjust the size of the gap between the lower rolling shafts according to the thicknesses of conveyed paper bags are arranged at the bottom of the mounting plate in the conveying direction; and the upper roller module further comprises a flat belt which is tensioned among the upper rollers and used for conveying the paper bags. Each upper roller can swing independently so that when paper bags pass, the upper rollers can back up and swing upward in time and can tightly press the paper bags and supply friction force for the paper bags, and combined with the flat belt to convey, the paper bags can be conveyed more stably and fitly. By arranging an adjustable cylinder, the height of the upper roller module can be quickly adjusted, maintenance and check are convenient, and the prepressing intensity of each upper roller can be adjusted.

The invention discloses a backlight source optical film dust removal device. The backlight source optical film dust removal device comprises a box body and a workbench, wherein the box body is adjacent to the workbench, the height of the workbench is one half of the box body, a controller is arranged at the top of the box body, and an optical film releasing device is arranged at the bottom of a groove; the optical film releasing device comprises a pair of supporting seats, a roller and a pair of round plates, a rotating shaft is arranged in an open hole, a dust removal rubber roller is arranged on the rotary shaft, bearings are arranged at the two ends of the dust removal rubber roller, the side face of the workbench is provided with a second air suction fan, the air suction end of the second air suction fan is connected with a second pipeline, a connecting rod is welded at the tail end of an L-shaped supporting rod, the lower end of the connecting rod is fixedly provided with an air suction device, and the air suction device is located right above the workbench. According to the backlight source optical film dust removal device, the design of the first air suction fan, dust suction treatment can be carried out on the periphery of the optical film releasing device in the box body, and dust on the periphery of the optical film releasing device is prevented from polluting the secondary dust of an optical film.

The invention relates to a pre-tightening force measuring device of a driving gear assembly of a gearbox of a tractor. The pre-tightening force measuring device comprises a measuring mechanism and a protecting and adjusting mechanism, wherein the measuring mechanism comprises a supporting base, a bevel gear engaging shaft, a torque transmitter and an end base, the bevel gear engaging shaft is supported on the supporting base through a bearing, a shaft shoulder end face of the bevel gear engaging shaft is connected with the bearing, a bevel gear engaging disk and a brake disk are arranged on the outer side of the bevel gear engaging shaft, the end base is installed on the supporting base, the torque transmitter is connected with the bevel gear engaging shaft and the end base, the torque transmitter is connected with a displayer, a driving part of the protecting and adjusting mechanism is installed on the supporting base, a telescopic part of the driving part is connected with a connection sleeve, a locking pin is connected with the connection sleeve, a locking pin hole and a notch are arranged on the supporting base or a locking base which is installed on the supporting base, the locking pin hole is matched with the locking pin, the notch is used for placing the brake disk, and a locking hole or a locking groove is arranged on the brake disk. The pre-tightening force measuring device has the advantages that the structure is reasonable, the pre-tightening force of the driving gear assembly can be measured and adjusted conveniently, and the assembly efficiency can be improved.

The invention relates to a low-impact energy storage pre-tightening hinge comprising a male hinge, a female hinge and an energy storage pre-tightening device, the male hinge and the female hinge are hinged through a rotating shaft assembly, the energy storage pre-tightening device is installed between the male hinge and the female hinge, the energy storage pre-tightening device comprises an energy storage part, a locking rod, a first check block and a second check block, and the energy storage part is connected between the first check block and the second check block; when the male hinge and the female hinge are in a folded state, the first check block is locked with the male hinge through a first elastic lock pin, and the second check block is locked with the locking rod through a second elastic lock pin. In the unfolding process of the male hinge and the female hinge, the female hinge abuts against one end of the locking rod and pushes the locking rod to move axially, and the locking rod drives the second check block to move towards the first check block and enables the energy storage part to store energy. When the male hinge and the female hinge are in an unfolded state, the female hinge and the locking rod are locked, the first check block and the male hinge are unlocked, the first check block and the locking rod are locked through the first elastic lock pin, the second check block and the locking rod are unlocked, and the second check block and the male hinge are locked through the second elastic lock pin.

The invention discloses an aluminum alloy building formwork splicing assembly which comprises multiple groups of formworks transversely laid along floor slabs to be cast. Multiple groups of supporting beams connected with the formworks and provided with gaps are arranged among the formworks, a fixing block fixed to the supporting beams and provided with a guiding groove is arranged at the intersection position of every two adjacent supporting beams, jacking parts matched with the gaps, provided with the top faces acting on the floor slabs and provided with connecting grooves are arranged between two fixing blocks, the top faces of the jacking parts, the formworks and the supporting beams jointly form a floor slab formwork for floor slab casting, connecting pieces fixedly connected with the fixing blocks are arranged in the guide grooves and the connecting grooves. The aluminum alloy building formwork splicing assembly further comprises adjustable supporting rods arranged on the ground, with the top ends in plugged connection with the jacking parts and used for jacking the formworks and the supporting beams. The aluminum alloy building formwork splicing assembly is simple in structure, convenient to splice, high in efficiency, good in overall stability, small in scaffold number, economic and efficient.

The invention discloses a decorative film winding device, which comprises a base and bolts. The left side of the top of the base is fixedly connected with a first vertical board and a second vertical board in sequence from front to back, and the back of the second vertical board is fixed A first motor is connected, the rotating shaft of the first motor passes through the second riser and extends to the outside of the second riser, the back of the first riser and the rotating shaft of the first motor are fixedly connected with a mounting flange, The opposite side of the mounting flange is fixedly connected with a reel through bolts, the right side of the top of the base is fixedly connected with a support platform, and the front and rear sides of the top of the support platform are fixedly connected with U-shaped plates. The spring of the present invention generates a tension force on the support plate and the extrusion shaft, so that the extrusion shaft and the reel are in close contact, the pre-tightening force between the extrusion shaft and the reel can be adjusted, the decorative film can be well clamped, and the reel is avoided. The occurrence of looseness when winding the decorative film facilitates the winding of the decorative film.

The invention discloses a hinge lock. The hinge lock comprises a fixed piece and a moving piece which are hinged to each other, and further comprises a sliding plate, ejection rods, a spring and a guiding sliding block; one side of the sliding plate is provided with a rod sleeve; the rod sleeve is internally provided with a thread A; a thread B d is arranged on a pin shaft of the moving piece; therod sleeve is arranged on the pin shaft of the moving piece in a sleeving mode; the rod sleeve and the pin shaft are in threaded connection through cooperation of the thread A and the thread B; the sliding plate is further provided with at least one chute; the other side, opposite to an upper pin hole and/or a lower pin hole, of the fixed piece is provided with a plurality of horizontally formedcountersunk pre-tightening holes; the inner ends of the countersunk pre-tightening holes communicate with a limiting groove; the ejection rods are inserted and connected into the countersunk pre-tightening holes; and the front ends of the ejection rods can extend out of the bottoms of the countersunk pre-tightening holes and extend into the limiting groove. A door can be locked through a speciallydesigned hinge when being opened, a support rod does not need to be arranged on a wall additionally, the indoor space is tidier, and the safety of the indoor space is improved.