74results about How to "Prevent back movement" patented technology

The present invention relates to a damping apparatus for moving furniture parts, for example doors, flaps or drawers. Such a damping apparatus of a compact construction which avoids a possible springing back movement of the furniture parts is provided in accordance with the invention in that the damping apparatus has at least two damping stages each having a cylinder having a piston longitudinally displaceable therein which exert a damping action of different strengths.

The invention discloses balance weight equipment of a crane. The balance weight equipment is arranged on a turntable of the crane and comprises a balance weight which is arranged at the bottom of the rear side of the turntable in a rotatable manner, a driving device which is connected with the turntable and the balance weight respectively and is used for driving the balance weight to rotate for a preset angle, and a locking device which is connected with the driving device to allow the balance weight to keep a static state at the preset angle. According to the balance weight equipment of the embodiment disclosed by the invention, an anti-tilting moment can be changed by changing the gravity center of the balance weight relative to the position of the crane; the locking device can keep the balance weight in the static state at the preset angle, so that the back-movement of the gravity center of the balance weight is avoided, and the potential safety hazard is eliminated; therefore, the workability of hoisting of the crane is improved under the situation that the balance weight is not increased, and the stability and the safety of the crane are improved. The invention also discloses the crane with the balance weight equipment.

A motorcycle dolly which rolls upon a flat surface on four lower wheels positioned in a set radius on the flat surface, the dolly including an upper surface adapted to securely receive a rear wheel of a motorcycle while remaining stationary as the rear wheel of the motorcycle is rolled onto the upper surface, the dolly rolling along the flat surface in an arc equal to the set radius, the radius being the equivalent of the distance between the flat surface contact point of a front wheel and the contact point of the rear wheel, wherein the front wheel of the motorcycle remains stationary upon the flat surface, while the rear wheel upon the upper surface of the dolly is pivotal rotated along the radius, sliding the rear of the motorcycle along the flat surface for movement to a stored position.

A bath tub cushion for lining one end surface and a portion of a bottom surface of a bath tub includes a back portion having a number of fluid impermeable chambers formed therein. A fluid communication device is disposed in fluid communication with an interior portion of the chambers for inflating and deflating them as necessary. An anti-slip mechanism is disposed on a back surface of the back portion which engages an end of such bath tub to prevent movement during use. A bottom portion extends toward an opposed end of such tub and is connected to a bottom edge of a front portion of such back portion for supporting a person's hips during bathing. There is an additional anti-slip mechanism disposed on a bottom surface of the bottom portion which engages bottom surface of such bath tub for preventing movement of the bottom portion during use.

The invention relates to testing equipment, and particularly provides a multifunctional compression tester which aims at solving the problems that for an existing compression tester, screw-type compression cannot be measured, and the compression speed cannot be regulated in real time. For solving the problems, the compression tester comprises a motor arranged on a platform, a lead screw assembly, a translational moving assembly and a compression barrel assembly; the lead screw assembly comprises a lead screw support, a bearing seat fixed on the lead screw support and a lead screw penetrating through the bearing seat, and the lead screw is driven by the motor to rotate; the translational moving assembly comprises a transducer block spirally arranged on the lead screw in a sleeving mode and a sliding wing slidably supporting the transducer block; the compression barrel assembly comprises a compression barrel and a compression device arranged in the compression barrel, and the compression device is driven by the transducer block or the lead screw. According to the tester, due to the fact that the motor is adopted as a power source and the lead screw assembly is combined with the translational moving assembly, not only can piston-type compression be measured, but also screw-type compression can be measured, and the stretch speed can be accurately regulated in real time.

An industrial truck comprises a pair of wheel supporting arms protruding in longitudinal direction, a lift frame movable in longitudinal direction, a load tine adjusting device and a pair of load tines, the load tines capable of being adjusted together along the lift frame in the height direction and being adjusted independently in the direction transverse to the longitudinal direction. A limit switch assembly is provided with a control device for preventing collision between the load tines and the wheel supporting arms. The limit switch system is provided with a height sensor for at least one load tine, the height sensor used for detecting a shortfall of a predetermined minimum height, and a plurality of sensors used for detecting positions of the load tines relative to the wheel supporting wheels. The control unit of the limit switch system blocks the functions for movement of the load tines in a non-extended position of the lift frame when the predetermined minimum height falls short, and release the falling function of the load tines of reaching the height lower than the minimum height when the load tines are detected to be located at lateral positions of the wheel supporting arms.

The invention relates to the technical field of charging devices and discloses an intelligent charging device which is used for the Internet of Things and capable of preventing electric leakage. The intelligent charging device comprises a shell, a charging base is fixedly plugged and connected with the right side of the upper surface of the shell, the lower surface of the charging base is fixedlyconnected with a fixing ring, the lower surface of the fixing ring is fixedly connected with a fixed block, a movable opening is formed in the center of the upper surface of the fixed block, an air cavity is formed in each of the two sides of the inner wall of the movable opening, and an air vent is formed in the upper surface of the inner wall of each air cavity. The intelligent charging device which is used for the Internet of Things and capable of preventing the electric leakage has the advantages that certain support effect is realized on a baffle by virtue of a stop block, when a currentconducting plate is separated from the charging base, the air inside each air cavity is utilized for conveniently enabling a connecting plate to be respectively connected with the current conducting plate and the charging base, certain fixation effect on the current conducting plate is achieved, the current conducting plate is prevented from being contacted with the shell, the effect of preventingthe electric leakage is achieved, and when the current conducting plate is separated from the charging base, the connecting plate is utilized for guaranteeing that the charging base can be continuously electrified, so that usability of the charging base is improved.

The invention relates to an assembly type building pre-embedded electrical pipeline system which comprises a prefabricated wall body and a composite floor slab. The prefabricated wall body is perpendicularly connected with the composite floor slab, wire pipes are pre-embedded in the prefabricated wall body and the composite floor slab, and connecting grooves are pre-formed in the connecting positions of the prefabricated wall body and the composite floor slab; and the wire pipes of the prefabricated wall body and the composite floor slab extend into the connecting grooves, connecting pipe fittings used for being connected with the wire pipes are arranged in the connecting grooves, and junction boxes are preset on the prefabricated wall body and the composite floor slab. The assembly type building pre-embedded electrical pipeline system has the effect of improving the electric pipeline mounting efficiency.

The invention provides a one-way adjustable chain type conveying mechanism, belongs to the technical field of automatic machining, and solves the technical problems of disorder and missing during conveying of workpieces with the conventional conveying chain. The one-way adjustable chain type conveying mechanism comprises a link plate frame, a transmission shaft, a transmission device, an arresting device and an adjusting device, wherein a conveying chain is arranged on the link plate frame; a ratchet wheel is arranged on the transmission shaft; the ratchet wheel is provided with a plurality of gear blocks; the transmission device is used for driving the ratchet wheel to rotate and move the conveying chain; when the gear blocks are in contact with the arresting device, the ratchet wheel stops rotating; when the transmission device drives the arresting device to move away from the gear blocks, the ratchet wheel can rotate continually; the adjusting device is connected with the link plate frame, and can drive the link plate frame to move on the transmission shaft. The one-way adjustable chain type conveying mechanism has the beneficial effects that the ratchet wheel is driven to rotate through the transmission device, so that the workpieces can be conveyed orderly. Bidirectional braking of the ratchet wheel is realized in the static state of the ratchet wheel through the arresting device, so that the workpiece conveying accuracy is ensured.

The invention relates to the technical field of photovoltaic power generation, in particular to a foldable photovoltaic power generation bracket. The foldable photovoltaic power generation bracket comprises a bracket body and a sliding groove formed in the bottom of the bracket body, wherein a fixing plate is arranged on one side of the bracket body; moving balls are arranged in the sliding groove; a moving plate is arranged on the sliding groove; a sliding plate is arranged in the sliding groove; sheltering plates are respectively arranged at the top end of the fixing plate and the top end ofa moving frame. According to the foldable photovoltaic power generation bracket disclosed by the invention, the sliding groove and the fixing plate are formed in/arranged on the bracket body; the moving plate is arranged in the sliding groove; the moving frame is arranged on the moving plate; four brackets are arranged between the fixing plate and the moving frame; every two adjacent brackets aremovably connected through a rotating shaft II; two brackets at two ends are separately and movably connected to the fixing plate and the moving frame through the rotating shafts II, so that when themoving plate moves, the brackets are driven to unfold, and when the moving plate is contracted, the brackets are driven to contract and fold; the sheltering plates are arranged, the supporting rods and the second grooves are also arranged/formed, and each supporting rod is in clamping connection cooperation with the corresponding second groove, so that the opening and the closing of the shelteringplates are realized.

The invention relates to a device 1 for loading machines handling bulk materials, in particular materials that may be in baled or balled form, such as fibres, yarns, threads or debris from woven or non-woven or plastic textile products. Said device 1 comprises: a hopper 8; a conveying device placed on the base of said hopper 8, to convey a strip of material 3 in a backward conveying direction 4 through an opening 14 and into a machine to be loaded; a knife 15 having a blade 17 that can undergo a reciprocating movement approximately perpendicular to the conveying direction 4 so as to cut the material conveyed into the opening 14; and a device for balancing the reciprocating movement of said blade 17.

The invention discloses a high-pressure-resistant tee forming machine capable of improving yield, which comprises an upper die and a lower die, wherein telescopic water injection guns are arranged inthe lower die corresponding to two branched pipe die cavities of a tee, the telescopic water injection guns are arranged at the front end of a main piston rod of a main oil cylinder, and a telescopicretreating stopping device is arranged beside the main piston rod. After the technical scheme is adopted, the high-pressure-resistant tee forming machine has the advantages that 1, before water injection is carried out, the main piston rod is firmly locked to prevent the situation that in the water injection process, the main piston rod retreats due to the fact that water pressure in a U-shaped pipe is sharply increased, so that loss of water pressure in the U-shaped pipe is avoided, and a condition is created for subsequent secondary forward pushing forming; and 2, by the cooperation of a forming auxiliary rod and the water pressure, in the calendering forming process, the outer wall of the U-shaped pipe is slowly calendered instead of being instantaneously finished, and the forming auxiliary rod retreats in the forming process and abuts against the outer wall of the U-shaped pipe, so that the outer wall is prevented from being crushed by strong water pressure due to over-excitation of forming, and the yield is improved.

The invention discloses a sheet metal machining mechanism, which belongs to the field of sheet metal machining. The sheet metal machining mechanism comprises two feeding guide rails; the two feeding guide rails are respectively, independently and fixedly arranged; a feeding slide block is arranged on the feeding guide rails; the feeding slide block is connected with the feeding guide rails in a sliding manner; a stepping table is fixedly arranged at the top end of the feeding slide block; two pressing plates are arranged at the top end of the stepping table; pressing air cylinders are fixedly installed on the side walls of the pressing plates; and rubber blocks are arranged at the output ends of the pressing air cylinders. The processing efficiency of the metal plate is high.

The invention discloses a method for ultrasonic welding of a fabric. The fabric comprises a top layer, a sandwich layer, and a bottom layer. The method comprises the following steps: a. cutting the top layer, the sandwich layer, and the bottom layer to a desired width respectively, and sheathing the cut top, sandwich and bottom layers on fixed wheels respectively; and b. pulling one ends of the top, sandwich and bottom layers out separately to enable the top, sandwich and bottom layers to be stacked together in a certain distance from top to bottom, placing the stacked fabric on an ultrasonicwelding machine, and welding the overlapped edges to form a product.

The invention discloses a clinical operation wire retractor fixing device suitable for the neurosurgery department. The clinical operation wire retractor fixing device comprises a fixed plate, a groove is formed in one end of the fixed plate, the side walls of the two sides of the groove are slidably connected with sliding blocks, a connecting plate is fixed between the sliding blocks, one end ofthe connecting plate extends to the exterior of the groove, a rotating disc is arranged above the connecting plate, the outer side wall of the rotating disc is connected with a plurality of adjustingwires, fixing hooks are fixed to the ends, away from the rotating disc, of the adjusting wires, the side wall of the bottom end of the groove is rotationally connected with a rotating shaft, one end of the rotating shaft extends to the exterior of the groove, and a rotating plate is fixed to the end of the rotating shaft; and a plurality of racks are formed on the side wall of the side, close to the rotating shaft, of the connecting plate, and the outer side wall of the rotating shaft is in a sleeved connection with a gear in a close fit mode. According to the clinical operation wire retractorfixing device, an operation wire tractor can be fixed, the problem of moving-back or vibration due to elastic force of a spring can be avoided, fixing stability is improved, the fixing range can be conveniently adjusted, the tensioning positions between the operation wire tractor and the fixing hooks can be adjusted, and fixing strength is improved.

An image forming apparatus includes an image carrier, a rotating brush, a collecting roller, a cleaning blade, a sealing member and a side sealing member. The sealing member has an extension part extending outside from each end of the collecting roller in an axial direction. The sealing member comes into contact with the collecting roller between a contact area between the rotating brush and the collecting roller and the cleaning blade and then prevents backflow of the residue. The side sealing member lifts the extension part toward the collecting roller on an outside at a predetermined interval from a position corresponding to each side edge of a maximum-width sheet passing region on the image carrier.

The invention discloses a back-moving prevention type nail extracting device for the orthopedics department. The nail extracting device comprises an inner column and a sleeve, and the inner column internally sleeves the sleeve and comprises a limiting section, a locking section, a guide rail section and a nail extracting section sequentially from top to bottom. The limiting section is a stepped limiting part, and the diameter of the lower end of the limiting section is smaller than that of the upper end; the diameter of the locking section is smaller than that of the guide rail section and thenail extracting section; the sleeve is in a cylindrical structure with the closed upper end, the upper end of the sleeve is provided with a traction hole, the direction of the traction hole is perpendicular to the axis of the sleeve, the sleeve is internally provided with a buffer cavity and a guide rail cavity sequentially from top to bottom, and the limiting section and the locking section of the inner column are positioned in the buffer cavity. The back-moving prevention type nail extracting device for the orthopedics department has advantages that under the action of a steel ball and an extrusion wall, the inner column and the sleeve are locked, unidirectional traction of the inner column and the sleeve is realized, back moving is avoided effectively, and discomfort in a nail extracting process is relieved.

The invention discloses a feeding device of a machine tool, and in particular relates to an adjustable workbench. The adjustable workbench comprises a rack, a motor, a sliding rod and a sliding seat, wherein the two ends of the sliding rod are arranged on the rack, the sliding seat is slidably connected with the sliding rod, a workbench can be arranged on the sliding seat, teeth are arranged on the sliding seat, a V-shaped frame is arranged on one side of the teeth of the sliding seat, a fixed jaw is fixedly arranged at one end of the V-shaped frame, the other end of the V-shaped frame is hinged with a movable jaw which can rotate inwards, and a torsion spring is arranged in a pin shaft of the movable jaw; a convex rod is arranged at the middle part of the V-shaped frame, the convex rod is matched with a ratchet wheel and the ratchet wheel is connected with a rotating shaft of the motor; a tension spring is arranged between the convex rod and the rack. By adopting the technical scheme, the adjustable workbench has the advantages of simple structure and high practicability.

The invention discloses an inner diameter measuring device for a tubular anastomat, and belongs to the technical field of medical instruments. The device comprises a base, a screw rod is arranged in the base, a sliding seat is arranged on the surface of the screw rod, a movable measuring head is connected to one end of the sliding seat, and a fixed measuring head is arranged on the side edge of the base. The adjusting bolt rotates to drive the screw rod to rotate, the sliding seat on the surface of the screw rod moves, the movable measuring head on the side edge of the sliding seat slides along the sliding rail to enable the fixed measuring head and the movable measuring head to be tightly attached to the inner wall of a pipe, the base is taken down to observe the position of the pointer on the dial gauge, then the inner diameter value is measured, and inaccurate measurement caused by back movement of the movable measuring head due to finger looseness is avoided; and by adjusting the sliding seat to move, a connecting contact piece is driven to move on the surface of a sliding resistor, the resistance value of the sliding resistor is changed, a corresponding inner diameter value isdisplayed on the display screen according to the change of the resistance value, meanwhile, a loudspeaker carries out voice broadcasting on the value, and inner diameter measurement is facilitated.

The invention discloses a power circuit control panel fine tuning type power case of which the structure comprises a rear panel, a lifting handle, a main body and screws. The rear panel is locked on the rear side of the main body through the screws. The top part of the main body is provided with the lifting handle. The main body is composed of a case body, a first fixing block, a first elevating device, a circuit board, a second fixing block and a second elevating device. The two sides in the case body are respectively provided with the first elevating device and the second elevating device. The first elevating device is flexibly connected with the first fixing block. The second elevating device is flexibly connected with the second fixing block. The second fixing block and the first fixing block are arranged on the same horizontal line. According to the power circuit control panel fine tuning type power case, the clamp block can be automatically popped up to fix the circuit board by pressing so that the degree of automation is high, fixing is more convenient and rapid and the pressing force to the circuit board can be properly mitigated through the spring.

The invention discloses an intelligent wax printing cloth stacker with an adjusting function. The stacker comprises stacker supports, a bottom plate, moving wheels and a carrying plate, the stacker supports are arranged at the two sides of the upper end face of the bottom plate, the moving wheels are arranged at the four corners of the lower end face of the bottom plate, the carrying plate is arranged between the two stacker supports, and an electric telescopic arm is arranged at one side of the upper end face of the carrying plate; a designed baffle plate can prevent cloth from inertial toppling when the electric telescopic arm pushes a fixed plate and can avoid the cloth from returning by following the carrying plate, so that the cloth is stacked smoothly in a flatter way, the baffle plate can be automatically adjusted and reset in the contraction process of the electric telescopic arm, the automatic degree is high, and operation is convenient; by means of first and second compression springs, a dialing block and a limiting block can be adjusted and reset automatically; and arc angles reduce wearing between the cloth and a sliding rod.

The invention relates to a protective film winding device, in particular to a street lamp pole transportation protective film winding device for urban construction. The technical problem is to provide the street lamp pole transportation protective film winding device which can lower the operation difficulty and save time and is used for urban construction. According to the technical scheme, the street lamp pole transportation protective film winding device for urban construction comprises an operation table, a collecting frame, first supports and a rotating rod, and the collecting frame is arranged on the upper side of the operation table. The two sides of the top of the operation table are fixedly connected with the first supports correspondingly. The rotating rod is installed between the first supports in a rotating mode. Through cooperation of a feeding mechanism and a moving mechanism, a street lamp pole can be automatically wound with a protective film, people only need to press one key, the operation difficulty is greatly lowered, time can be saved, and the protective film can be in a tensioned state through a tightening mechanism and is prevented from loosening.