50results about How to "Control the pressing force" patented technology

The invention relates to a pipe inner wall grinding and polishing device. The pipe inner wall grinding and polishing device comprises a drawing rod (8), wherein a centering bracket (7) is arranged at the front end of the drawing rod (8); three second adjustable wheels (10) are arranged at the periphery of the centering bracket (7) uniformly; a bracket seat (5) is arranged on the centering bracket (7); the front end of the bracket seat (5) is hinged to a swinging bracket (2); a power part (3) is arranged at the front end of the swinging bracket (2); a grinding wheel (1) is arranged at the output end of the power part (3); a jacking part (4) is arranged in the middle of the swinging bracket (2); a first adjustable wheel (9) is arranged at the output end of the jacking part (4); a swinging bracket swinging angle limiter (6) is fixedly arranged at the rear end of the swinging bracket (2). The pipe inner wall grinding and polishing device provided by the invention improves the grinding or polishing efficiency and can effectively control the pressing force to the pipe inner wall so as to guarantee the final grinding or polishing quality.

The invention discloses a clamp with controllable clamping force and for machining. Positioning and clamping for a workpiece are achieved very well, the tight-pressing force on the workpiece can be controlled very well, the damages to the workpiece is avoided, and the effect of improving the machining efficiency is achieved on the large-batch production. According to the technical scheme, the clamp comprises a foundation plate; guiding plates are disposed above the foundation plate; a sliding block is disposed between the two guiding plates; a threaded rod is inserted into the left side wall of the sliding block in a penetrating mode; a circular disc is mounted on the threaded rod; an ejector rod is inserted into the sliding block in a penetrating mode; and a spring is connected between the left end of the circular disc and the bottom wall of a blind hole. In an initial state, the circular disc is located on the leftmost side of the blind hole under the action of the spring, wedge grooves which are formed in the right side of the threaded rod and uniformly distributed circumferentially are formed in the outer edge of the ejector rod; clamping blocks which are uniformly distributedcircumferentially and can extend and retract in a radial direction are disposed on the inner wall of the position, matched with the ejector rod, of the threaded rod; and when the threaded rod moves rightwards relative to the ejector rod, the clamping blocks can be clamped into the wedge grooves so that the threaded rod can rotate only in one direction, and the threaded rod can move only leftwardsif the threaded rod rotates in one direction. The clamp is novel in conception.

The invention discloses a semitrailer air suspension axle installation positioning device, and relates to the technical field of car manufacturing. The semitrailer air suspension axle installation positioning device comprises two supports which are installed on a working platform and are symmetrically arranged; a plurality of positioning bases are installed on each support, and a plurality of jackscrew extending out to the inner side are installed at the lower portion of each support; a compression device is installed above the working platform, and a positioning plate is arranged between the two supports; the positioning bases on one support and the positioning bases on the other support are oppositely arranged; and the compression device comprises a pressing plate and a plurality of power cylinders connected with the pressing plate, and the multiple power cylinders are installed above the working platform through a supporting frame. Compared with the prior art, the semitrailer air suspension axle installation positioning device is adopted for semitrailer air suspension axle positioning installation, the procedure time for repeated measuring and positioning size adjusting is saved, the requirement for skills of operation persons is reduced, the accuracy of all installation sizes is guaranteed, and the product consistence is effectively guaranteed.

The invention discloses a bolt anti-loosening structure, which is characterized in that the bolt anti-loosening structure comprises: anti-loosening bolts, anti-loosening nuts, and anti-loosening clip springs, the anti-loosening nuts are screwed into the anti-loosening bolts, and the anti-loosening The circlip is arranged above the anti-loosening nut, the locking tongue of the anti-loosening circlip is embedded in the groove of the anti-loosening bolt, the notch of the anti-loosening circlip is embedded in the key of the anti-loosening nut, and the key of the anti-loosening circlip is embedded in the groove of the anti-loosening nut. The anti-loosening bolt method of the present invention can control the bolt pretightening force within a constant and effective range, so that the connecting parts operating in the vibration state can be effectively connected and work safely and normally, and the maintenance operations such as installation and disassembly are relatively convenient.

The invention relates to the technical field of universal ball joint production, in particular to a press fitting and oil injection detecting device and method for universal ball joint production. A guide-in assembly, a press fitting assembly, an oil injection assembly and a press fitting detecting assembly are sequentially arranged on an assembling support from the press fitting feeding directionto the press fitting discharging direction. The guide-in assembly is used for carrying out primary positioning guide-in on a ball shell and a connecting seat. The press fitting assembly is used for pressing the ball shell into the connecting seat, and the oil injection assembly is used for injecting oil into the ball shell. The press fitting detecting assembly is used for detecting an assembled ball shell and connecting seat assembly. The press fitting and oil injection detecting device and method have the advantages that the assembling precision of the ball shell and the connecting seat is improved, oil injection operation can be carried out conveniently, the oil injection comprehensiveness is improved, and the ball shell and connecting seat press fitting quality is improved.

The invention discloses an optical fiber rotary connector based on multichannel optical fiber early warning equipment, which comprises a stator shell and a rotor sleeve rotatably connected to the interior of the stator shell, a through hole matched with the rotor sleeve is formed in the stator shell, and the invention relates to the technical field of optical fiber early warning. According to theoptical fiber rotary connector, the rotor sleeve can be used in the stator shell for a long time, and the pressure generated by the pressing plate on the buffer spring is adjusted, so that the pressing force between rollers in the extrusion plate and the surface of the rotor sleeve is controlled; the problem that the optical fiber off-axis deviation becomes larger and larger due to increase of abrasion between the rotor sleeve and the stator shell during long-time rotation is avoided; and through the arrangement of the two movable bearings, the problem that the rotor sleeve deviates and shakesduring rotation can be effectively prevented, so that optical signals are stably transmitted, the coupling efficiency is improved, and good conditions are created for subsequent optical fiber early warning work.

The invention discloses a bolt self-locking anti-loosening structure. The bolt self-locking anti-loosening structure is characterized by comprising a lock bolt, a lock nut, an anti-loosening locking ring and a spring washer. A spiral anti-loosening groove is formed in the threaded section of the lock bolt, anti-loosening protruding teeth and a plurality of wedge-shaped anti-loosening teeth are arranged on the anti-loosening locking ring, and the lock nut is provided with the multiple wedge-shaped anti-loosening teeth. The spring washer and the anti-loosening locking ring are sequentially installed on the threaded section of the lock bolt, the lock nut is screwed into the lock bolt, the lock nut and the wedge-shaped anti-loosening teeth on the anti-loosening locking ring are the same in structure specification and are meshed with each other, and the anti-loosening protruding teeth on the anti-loosening locking ring are embedded into the spiral anti-loosening groove. According to the bolt self-locking anti-loosening method, the pre-tightening force of the bolt can be effectively controlled within a constant and effective range, loosening of the bolt and the nut is prevented, and the state of the bolt and the state of the nut are locked.

The invention provides netting twine pliers for facilitating removing of a netting twine sheath. The netting twine pliers settle the problems of difficult sheath removing and easy damage of inner twisted wires in sheath removing in prior art. The netting twine pliers comprise a plier head and plier handles. Furthermore the netting twine pliers comprise a first blade and a second blade which are respectively provided with an arc-shaped cutting edge. The two blades are respectively provided with a clamping projection at the lower end. The first blade is hinged with a right plier handle through a torsion spring. The second blade is fixed to a left plier handle. The two plier handles are inwards pressed. The arc-shaped cutting edges of the two blades are spliced relative to each other. A netting twine is clamped in the cutting edges of the two blades. The arc-shaped cutting edges of the two blades are spliced relative to each other for forming an annular cutting edge. The first blade is pressed and rotates along a hinging portion for performing sheath removing on the netting twine. Furthermore the arc-shaped cutting edge can well control the position of the netting twine in sheath removing, thereby preventing repeated displacement of the netting twine in sheath removing. The netting twine pliers have advantages of simple structure, convenient operation, effective control for a pressing strength, and effective damage reduction of the inner twisted wires.

The invention discloses a shower with a top sprinkler capable of rotating up and down. The shower comprises a fixing shower body, a top sprinkler, a balance mechanism and a sprinkler supporting part capable of achieving water passing or provided with a water through pipe to supply water to the top sprinkler. The sprinkler supporting part is rotatably connected to the fixing shower body in the up-down direction, the top sprinkler is arranged on the sprinkler supporting part, and the balance mechanism is connected with the sprinkler supporting part; the top sprinkler, the balance mechanism and the sprinkler supporting part form a lever-type mechanism, and by balancing the weight of the top sprinkler, the top sprinkler keeps in the state after adjustment. The top sprinkler is connected with the sprinkler supporting part and the balance mechanism, the angle of up-down rotation of the top sprinkler is greatly increased, the shower can be adaptive to people different in height, the top sprinkler can also be effectively positioned and keep at any position after adjustment, and users use the shower conveniently.

The invention discloses an ultrasonic-assisted laser welding system and an ultrasonic-assisted laser welding method for welding ultrahigh-strength steel along with welding, an ultrasonic generating device is connected with a laser welding head through a connecting clamp, and the ultrasonic-assisted laser welding process along with welding is realized under the driving of a robot. A front contact ultrasonic applying mode is adopted, a high-frequency vibration energy field of ultrasonic waves acts on a welding pool through a to-be-welded test plate, and a series of beneficial effects are utilized to improve the solidification and crystallization process of a welding seam. And a tail air cylinder of the ultrasonic generating device continuously provides pressing force for the ultrasonic amplitude-change pole in the welding process. The six-axis robot is adopted for driving, welding of complex tracks and spatial positions can be achieved, an original laser welding system is not changed, and equipment composition is simple. According to the method, the ultrasonic energy field is introduced into the laser welding pool, so that the problems of cold cracks and softening and embrittlement of a heat affected zone easily occurring during welding of the ultrahigh-strength steel for spaceflight can be effectively inhibited, and the comprehensive performance of a joint is improved.

The invention discloses a low pressure chromatography column. The column comprises a body, and further comprises a cylinder, a piston part, and a liquid dispensing assembly for collecting the dispensed liquid flowing from the liquid phaseof the filler in a filler cavity. The cylinder is provided with the filler cavity for accommodating the filler. The piston part comprises a piston assembly and apiston drive assembly connected to the piston assembly to drive the piston assembly to move so that the piston assembly is pressed into the filler cavity to act on the filler. The piston assembly is provided with an infusion distribution component guiding the liquid phaseto the upper surface of the filler in the filler cavity when the piston assembly is pressed in the right place.According to theinvention, the height of a column bed can be adjusted based on requirements, the pressing force on the surface of the filler is precisely controlled, so that the pressure acting on the surface of thefiller is more balanced, and a filtering effect is better.

The invention discloses a preparation method and a preparation system of a low-formaldehyde solid wood composite floor. The preparation method and the preparation system have the beneficial technicaleffect that a bottom plate and a back plate can be simultaneously pressed on a core plate coated with glue. The method comprises the following steps that 1, the core plate is placed between two U-shaped plates, two first electric push rods are started to drive the two U-shaped plates to get close to each other, and the core plate is clamped and fixed; 2, two side plates are correspondingly installed and fixed on two side plate fixing mechanisms; 3, a glue coating assembly moves downwards to coat the front end surface and the rear end surface of the core plate with glue, and the glue coating assembly is moved reversely to ascend and reset; 4, two side plate rotating mechanisms are started to drive the side plates on the two side plate fixing mechanisms to rotate upwards to a vertical state;and 5, a pressing control mechanism is started to drive the two side plates to get close to the core plate and to be bonded and pressed at the two ends of the core plate.

The invention provides an M1 line door seal automatic pressing machine. The M1 line door seal automatic pressing machine comprises an installation support, a pressing assembly, a visual induction assembly, an electric control cabinet, a PLC, a centering assembly and a supporting plate. According to the M1 line door seal automatic pressing machine, through the arrangement of the centering assemblyand the visual induction assembly, a visual sensor automatically recognizes a door body model, the PLC controls a centering electric push rod to push centering plates to move, so that the distance between the centering plates is matched with the size of the door body model, the pressing size is adjusted according to needs, the pressing operation of door seals of different sizes is met, and the application range of the pressing machine is widened; and a first compression roller assembly and a second compression roller assembly are arranged, an air cylinder pushes a compression roller plate to move downwards, the door seal is subjected to pressing operation through a compression roller, the PLC controls the downward moving distance of the air cylinder, the pressing force of the compression roller on the door seal is kept consistent, the purpose of controlling the pressing force of the door seal is achieved, and the pressing quality of the door seal is improved.