34results about How to "Guaranteed stable clamping" patented technology

The invention discloses an installation method of a curved steel latticed shell structure with a gradually varied gable starting span. The installation method comprises the following steps of a, construction preparation; b, splicing block by block and segment by segment; and c, installing a purline system and a roof panel structure. Connection between a steel wire rope and a ball joint is achievedthrough a steel wire rope pulling device, the pulling stability of the steel wire rope is guaranteed, the steel wire rope is prevented from sliding, the perpendicularity of a vertical gable structureis guaranteed, and damage to a rod piece of the latticed shell structure in the steel wire rope pulling process is avoided; and meanwhile, temporary fixing devices are used for supporting the ball joints on the inner sides of the gable latticed shell units, the construction safety performance is improved, and the temporary fixing devices can eliminate the influence of site flatness errors on themounting precision, mounting construction between the ball joints and the temporary fixing devices is better facilitated, construction operation is convenient, field construction is flexible and convenient, precision errors are easy to adjust, construction efficiency is high, installation quality is guaranteed, potential safety hazards of aloft work are reduced, and construction cost is reduced.

The invention provides a rapid positioning and clamping device for metal cutting machining. The rapid positioning and clamping device for metal cutting machining comprises a base, wherein a clamping mechanism for clamping the front and rear sides of a to-be-machined part is fixed on the upper surface of the base, and a positioning mechanism for jacking the left and right sides of the to-be-machined part is further fixed on the upper surface of the base; the upper surface of the base is connected with a fixed part of a lead screw sliding table through a transverse sliding mechanism, a sliding part of the lead screw sliding table is fixedly connected with an outer shell of a first electric push rod, and the telescopic end of the first electric push rod is connected with a supporting nail and used for supporting the lower side of the to-be-machined part; a first plate body is further fixed to the base, a transverse sliding groove is formed in the first plate body, the sliding groove is in sliding connection with a sleeve, the sleeve is in threaded connection with a first screw rod, and a pressing head used for pressing the upper part of the to-be-machined part is fixed to the lower end of the first screw rod; The rapid positioning and clamping device for metal cutting machining is suitable for universal clamping of complex parts, and the clamping mechanism, the positioning mechanism, a supporting mechanism and a pressing mechanism are matched to limit the six degrees of freedom of the parts so as to guarantee stable clamping of the parts.

The invention discloses a hydraulic index chuck which comprises a chuck body. A clamping cavity is formed in the front end of the chuck body, an upper clamping seat and a lower clamping seat are arranged in the clamping cavity and vertically opposite, an upper clamp and a lower clamp for clamping workpieces are arranged in the upper clamping seat and the lower clamping seat, the upper clamping seat is vertically and movably arranged in the clamping cavity, the lower clamping seat is fixedly arranged in the clamping cavity, and a hydraulic circuit for controlling the upper clamping seat to clamp workpieces downwards or release the workpieces upwards is arranged on the chuck body. The hydraulic index chuck is characterized in that a pressure compensation mechanism is arranged on the hydraulic circuit. The hydraulic index chuck has the advantages that the pressure compensation mechanism arranged on the hydraulic circuit provides a reverse centrifugal force, pressure compensation for the upper clamping seat is realized, loss of clamping force caused by the centrifugal force of the clamping seats and the clamps can be avoided, stable clamping of the workpieces is ensured, and the hydraulic index chuck is simple in structure and good in safety.

The invention discloses an aircraft tire clamping and lifting device, and relates to the technical field of aircraft tire clamping and lifting devices. The aircraft tire clamping and lifting device comprises a U-shaped supporting plate, a U-shaped base and clamping devices. The U-shaped base comprises a straight plate. Two side plates are symmetrically fixed to the two ends of the straight plate.Each clamping device comprises an arc seat. One side face of each arc seat is an arc face. An arc clamp plate is fixed to each arc face. Arc protection plates are fixed to the two side faces of each arc clamp plate. A tire groove channel is defined by each arc clamp plate and the corresponding two arc protection plates. The invention further provides a control system of the aircraft tire clampingand lifting device. According to the aircraft tire clamping and lifting device, the two symmetric clamping devices are fixed to the two side plates, meanwhile, the two clamping devices are controlledby first telescopic devices to move relatively to clamp aircraft wheels, each tire groove channel defined by the corresponding arc clamp plate and the corresponding two arc protection plates is matched with aircraft tires, and clamping stability is improved; and meanwhile, second telescopic devices are used for lifting the clamping devices, and mounting and repairing of the aircraft wheels are facilitated.

The invention relates to the field of screw twisting tools, in particular to a screw twisting device. The screw twisting device comprises a first clamping component, wherein the first clamping component is rotationally assembled with a second clamping component through a rotating shaft; a hook structure matched with a screw is arranged on the first clamping component; a first clamping surface is arranged on the hook structure; a second clamping surface is arranged on the second clamping component; the first clamping component and the second clamping component are matched, so that the first clamping surface and the second clamping surface clam the screw when the second clamping component is rotated to a set position. Compared with the conventional screw twisting device, the screw twisting device provided by the invention does not need to tap the screw, is convenient to operate and high in screw removing efficiency, and solves the problems that the conventional decapitated bolt removing structure is inconvenient to operate and is low in screw removing efficiency.

The invention provides a building construction support. The support comprises a hollow shell, a supporting plate, a clamping mechanism, a damping mechanism and a distance adjusting mechanism, wherein an opening is formed in the top of the shell, and the supporting plate is movably arranged on the side wall, which corresponds to an opening, of the shell and covers the opening; the distance adjusting mechanism is arranged on the top of the shell, is connected with a wall body and is also used for adjusting the distance between the shell and the wall body; the clamping mechanism is arranged on the supporting plate, is arranged outside the shell and is used for clamping a steel pipe; and the damping mechanism is arranged in the shell and is used for damping when the supporting plate vibrates. According to the building construction support, the distance between the shell and the wall body is adjusted through the distance adjusting mechanism, the shell and the wall body are relatively fixed after adjustment, the steel pipe is clamped through the clamping mechanism, when vibration occurs on the wall body or in other places, the supporting plate can move up and down relative to the shell, and the supporting plate is damped through the damping mechanism, so that the steel pipe is prevented from deviating, the stability in clamping the steel pipe is guaranteed, the steel pipe does not need to be fixed again, and the construction efficiency is improved.

The invention provides drilling equipment for a network transformer. The drilling equipment comprises a workbench, two limiting bases and a drill bit, wherein a plurality of cleaning assemblies capable of cleaning a workbench top are installed at the position, close to a groove between the two limiting bases, of the inner surface of the top side of the workbench in the front-back horizontal direction in an equally adjacent and sliding mode, and each cleaning assembly comprises a dust control assembly capable of controlling entering and exiting of dust, a water storage assembly capable of storing clear water and a dust collection assembly capable of collecting and absorbing the dust. According to the drilling equipment for the network transformer, the workbench can have a self-cleaning function, in a drilling process of the network transformer, the dust is prevented from being left and accumulated in the groove between the two limiting bases for a long time, the dust can be cleared in time, stable clamping of the network transformer is guaranteed, the drilling error is reduced, and the accuracy is improved.

The invention discloses a quick and convenient clamp device for a mechanical machine tool, and belongs to the technical field of mechanical clamps. A fixing clamping block is arranged on the left sideof the top of a base, a limiting block is arranged at the bottom of the right side wall of the fixing clamping block, a powerful telescopic cylinder is arranged on the right side of the top of the base, and a guiding nut is arranged on the top of a supporting frame; an adjusting screw rod is arranged in an inner cavity of the guiding nut in a nested mode, the adjusting screw rod penetrates through the supporting frame to be connected with a pressing plate, and a reinforcing vertical plate is arranged on the side, close to a sliding rail, of the supporting frame; and reinforcing plates are evenly arranged in an inner cavity of a pressing plate body in the length direction, clamping protruding blocks are evenly arranged at the bottom of the pressing plate body in the length direction, and abrasion-resisting rubber sleeves are arranged at the bottoms of the clamping protruding blocks. The quick and convenient clamp device is reasonable in structural design, the reliability of the deviceis improved, it can be ensured that a workpiece is clamped stably, the workpiece does not move, machining consistency is ensured, and the reliability of product quality is indirectly improved.

The invention relates to the technical field of wrenches, and discloses an electric wrench for an engraving machine tool rod. The electric wrench comprises a fixing plate, a strip-shaped groove is transversely formed in the upper side of the fixing plate, a bidirectional screw rod is transversely arranged in the strip-shaped groove, the left end of the bidirectional screw rod is rotationally connected with the left side of the strip-shaped groove through a rolling bearing, a motor is fixedly arranged on the right side wall of the strip-shaped groove, the output end of the motor is fixedly connected with the right end of the bidirectional screw rod through a coupler, two moving blocks are symmetrically arranged in the strip-shaped groove in a sliding mode, the side walls of the two moving blocks are in threaded connection with the two sides of the rod wall of the bidirectional screw rod through a first threaded hole and a second threaded hole respectively, and connecting rods are fixedly arranged on the upper sides of the two moving blocks. According to the electric wrench, the operation intensity of workers is reduced, and a first arc-shaped clamping plate and a second arc-shaped clamping plate can be guaranteed to stably clamp the tool rod, so that the dismounting and mounting efficiency of the tool rod is improved.

The invention discloses a computer hardware processing fixing device, and relates to the technical field of computer processing devices. The computer hardware processing fixing device comprises a supporting frame and a rotating disc box; the top of the supporting frame is fixedly connected with supporting plates, and the tops of the supporting plates are fixedly connected with annular groove plates; the bottom of the rotating disc box is fixedly connected with annular plates, and the outer surfaces of the annular plates are slidably connected with the inner surfaces of the annular groove plates; and the bottom of an inner cavity of the rotating disc box is fixedly connected with a fixing plate, the top of the fixing plate is sequentially and fixedly connected with swinging blocks from topto bottom, and a sliding groove is formed in the bottom of the rotating disc box. According to the computer hardware processing fixing device, the positions of clamping telescopic rods can be changed,thus forming of hydraulic telescopic rods is reduced, stable clamping of the computer hardware processing fixing device is also guaranteed, using is convenient, and the problems that the stroke of the hydraulic telescopic rods is limited, consequently certain slightly larger parts cannot be clamped during processing, and using is affected are solved.

The invention provides automatic sealing equipment. The equipment is reasonable in structural design, easy in operation, and capable of conducting automatic sealing. The equipment comprises a rack, wherein a sealing device used for sealing packaging bags is arranged on the rack, a material receiving device used for receiving and conveying the packaging bags is arranged on the rack, the material receiving device comprises a material receiving groove which is provided with a cavity used for containing the packaging bags, a first driving mechanism used for driving the material receiving groove toconvey the packaging bags is arranged on the rack, and a material conveying mechanism used for clamping the packaging bags in the material receiving groove to the sealing device is arranged between the material receiving groove and the sealing device.

The invention discloses a clamping device and method, the clamping device comprises a three-jaw chuck module and more than two auxiliary modules, and each auxiliary module comprises three groups of auxiliary units; the three-jaw chuck module comprises a cylindrical bracket and three groups of clamping jaw units which are uniformly arranged along the circumference of the cylindrical bracket; a group of auxiliary units are arranged on the cylindrical bracket at the position opposite to each group of clamping jaw units; in each auxiliary module, at least two auxiliary units in the three auxiliary units are supporting units, each supporting unit comprises a linear driving part, a force feedback element and a clamp head, and the linear driving part drives the clamp head to penetrate through the cylindrical support and move towards or away from the corresponding clamping jaw unit; the force feedback element is used for obtaining surface acting force of the clamp head. According to the clamping equipment, the target workpiece can be pre-clamped through linkage adjustment of the multiple auxiliary units, then the target workpiece is actually clamped through the clamping jaw unit, the centering performance of the clamped target workpiece can be guaranteed, and the clamping precision of the target workpiece is improved.

The invention discloses a pipe supporting device for an all-round laser cutting machine, and relates to the technical field of laser cutting, the pipe supporting device for the all-round laser cutting machine comprises a supporting base, the surface of the supporting base is slidably connected with a base, and the surface of the base is fixedly connected with a connecting rod; a first fixing disc is arranged at the upper end of the connecting rod, a clamping mechanism is arranged in the first fixing disc, and through the arrangement of the clamping mechanism, a worker only needs to rotate a worm, the circle center of a round pipe can coincide with the circle center of the first fixing disc, machining of the round pipe is facilitated, meanwhile, use of a spring is avoided as much as possible, and the machining efficiency is improved. The situation that when the round pipe is heavy, the spring is extruded, and consequently the round pipe is located inaccurately is avoided as much as possible, the machining quality of the round pipe is improved, meanwhile, meshing of the worm gear and the worm has self-locking performance, shaking generated in the round pipe machining process is avoided as much as possible, the influence on fixing of the round pipe is avoided as much as possible, and the fixing stability of the round pipe is improved.

The invention discloses a passenger car frame clamp. A positioning device is arranged on the front surface of a base in a sliding mode, a top plate is fixedly arranged at the upper ends of supportingplates on the upper surface of the base, two clamping plates are arranged between first sliding grooves and second sliding grooves in a sliding mode, a first lead screw penetrates through the left supporting plate and the left clamping plate, and a second lead screw penetrates through the upper end of the right supporting plate and the right clamping plate. The positioning device can quickly clampa car frame, and controls the position of the right clamping plate through the positioning device, so that the stable clamping of the car frame is guaranteed, the clamping mode is suitable for various situations, real-time adjustment can be carried out according to the field specific conditions, the welding requirement of complex conditions is met, and the welding efficiency is guaranteed.

The invention discloses processing equipment capable of replacing lug wings and having an anti-falling test function, and relates to the technical field of special-shaped component processing detection, in particular to a base, an internal expansion clamping mechanism, a puncture detection mechanism, an expansion locking mechanism and an alicyclic ring, and the alicyclic ring is connected to the bottom end of an expansion sleeve. In the processing equipment capable of replacing lug wings and having an anti-falling test function, the internal expansion clamping mechanism is arranged, the mechanism is specially designed according to material characteristics and annular structural characteristics of replaceable lug wing material elastic rubber, by rotating the adjusting handle, the screw meshed with the adjusting handle is subjected to downward driving force relative to the adjusting handle component, the spherical pin is driven to extrude the three sliding columns arranged at the bottom end of the guide groove, the shape of the supporting pieces arranged at the output ends of the tops of the sliding columns is matched with the shape of the end face of an inner hole of the to-be-detected replaceable lug wing material, it is guaranteed that the to-be-detected replaceable lug wing material is clamped stably, and it is avoided that the experiment precision is affected by loosening and slipping in the detection process.