52results about How to "Prevent accidental loosening" patented technology

The invention discloses a stroke regulation built-in precise fast press machine, and an oil cylinder and a use method thereof, belongs to the field of a hydraulic press machine, and solves the problems of low production efficiency, high cost and complicated structure of a slide block regulating mechanism of the existing hydraulic press machine. The oil cylinder provided by the invention comprises a main cylinder piston rod and a main cylinder body, wherein one end of the main cylinder piston rod extends into the main cylinder body; one end extending into the main cylinder body is provided with a cavity; a regulating screw nut is arranged at the upper part of the inner wall of the cavity; the regulating screw nut and the inner wall of the cavity are connected through screw threads; a regulating screw rod is also arranged in the cavity; the lower end of the regulating screw rod extends into the cavity; the middle end passes through the regulating screw nut; the upper end extends out of the main cylinder body; the upper end, extending out of the main cylinder body, of the regulating screw rod is fixedly provided with a worm wheel; the middle end, penetrating through the regulating screw nut, of the regulating screw rod is provided with a key slot; a guide key is arranged on the corresponding regulating screw nut. The press machine, the oil cylinder and the use method have the advantages that the cost can be reduced; the production efficiency is improved; the applicability to various processing processes can be realized.

A connector assembly that enables a rope or other load to be attached to a tarp or other sheet material. The assembly includes male and female connector members having broad, flat base surfaces for engaging the material of the tarp from opposite sides. The male connector member has a sharply pointed screw portion for penetrating through the material of the tarp, and the female connector member has a threaded socket for receiving the screw portion of the male connector member. At least one of the connector members includes a projecting flange portion having an opening or hook for attachment of the rope or other load. The flange portions are flattened for being gripped between the thumb and forefinger when tightening / loosening the assembly. The grip faces of the connector members include raised protuberances that prevent accidental loosening during use.

The invention provides a connector, which can precisely position all joint components and can be assembled with fewer processes under the condition of arranging a plurality of joint components on the connector aside a socket. A socket main body (10) is provided with jointing openings (18, 19, 21a, 21b, 22a, 22b). An outside socket joint component (32) is fixed on an inside joint supporter (41) which is made from synthetic resin. Through assembling an outside joint supporter (31) and the inside joint supporter (41) in the jointing openings (18, 19, 21a, 21b, 22a, 22b), the positioning is more precise and a contact part (32d) of the outside socket joint component (32) and the contact part (42d) of an inside socket joint component (42) can be precisely assembled.

The invention relates to a guide vane assembly (1) comprising at least partially resilient brackets (25; 31; 34), each of which has some tolerance between a web (7) of a guide vane (4) and an inner ring (3) of the guide vane assembly (1), the web (7) being located between a boot (8) and an airfoil (6) of the guide vane (4).

The invention relates to the field of scaffolds for buildings, and particularly to a scaffold cross-bar used for supporting a girder formwork. The scaffold cross-bar comprises a transverse steel pipe which is provided with at least a pair of tightly supported fasteners; each tightly supported fastener comprises a top sleeve sleeved on the transverse steel pipe in a sliding manner; each top sleeve is provided with a tight support part used for tightly supporting a side vertical surface formwork of a girder; in addition, a wedge block which is fixed on the transverse steel pipe in the expansion manner is also inserted in each top sleeve. When the scaffold cross-bar is used, the transverse steel pipe can be arranged below the girder, so that the two corresponding tightly supported fasteners are respectively located at two sides of the girder, and the positions of the top sleeves are adjusted by enabling the top sleeves to slide on the transverse steel pipe; and when the tight support part of each top sleeve tightly presses the side vertical surface formwork of the girder, each top sleeve is fixed in the expansion manner by knocking each wedge block, so that the tight support of the side vertical surface formwork of the girder is realized. After the scaffold cross-bar is adopted, step-to-step fasteners adopted in the prior art can be abandoned completely, and efficiency of building construction can be improved greatly.

The invention relates to the field of building scaffolds, and in particular relates to a double-pole scaffold system. The system comprises vertical rods and horizontal rods, wherein cross-shaped buckling parts are arranged at positions of the corresponding cross-shaped joints on the vertical rods; the cross-shaped buckling parts comprise sliding sleeves sleeved on the vertical rods and pressing assemblies arranged on the sliding sleeves; each pressing assembly comprises two hinge seats; one of the two hinge seats is hinged with a pressing cover, the other one of the two hinge seats is hinged with a hasp; hinging axial lines of the two hinge seats are parallel to each other and are vertically crossed with a space of central lines of the sliding sleeves; and in addition, a containing opening for containing the corresponding horizontal rods is encircled between the upper parts of the two hinge seats; an expansion block mounting groove is encircled between the lower parts of the two hinge seats; openings, of which the inner parts and the outer parts penetrate through each other, are formed between the two hinge seats of each set of pressing assembly on the walls of the sliding sleeves; an expanding sliding block which is used for preventing falling and wedged between the vertical rods and the corresponding horizontal rods is arranged in the expanding block mounting groove; and the double-pole scaffold system has the characteristic of convenience in application, and the security performance of a scaffold is improved.

The invention belongs to the technical field of bolts, particularly relates to a self-locking type fastening bolt, and aims to solve the technical problems that an existing self-locking type fastening bolt is inconvenient to disassemble and needs to be disassembled through two-side matching, particularly, when the position far away from one side of a nut is difficult to manually control, disassembly is more difficult, and even a fixed object needs to be damaged to take down the bolt to cause incomplete disassembly of the object. According to the technical scheme, the self-locking type fastening bolt comprises a self-locking screw and a nut which are fixedly connected, wherein a self-locking groove is formed in the side end, away from the nut, of the self-locking screw; a self-locking component is arranged in the self-locking groove; the self-locking assembly comprises a self-locking spring and a self-locking block; the self-locking block is fixedly connected to the inner wall of the self-locking groove through the self-locking spring; and an unlocking component is further arranged at the inner side of the self-locking groove. The self-locking type fastening bolt is convenient and fast to install, sensitive in self-locking, good in stability and convenient to disassemble, two sides do not need to be matched for disassembly during disassembly, the bolt can be smoothly taken down, and complete disassembly of the object is guaranteed.

The invention relates to an electric or electronic device comprising a casing, an electronic part in the casing and at least one inserting type connector. The casing is provided with an inserting terminal for holding the inserting type connector and the inserting terminal is provided with at least one contact element connected with the electronic part. At least one aerial is connected with the electronic part through the inserting type connector. The electric or electronic device can be used more reliably in practice, with little influence of the operation. The casing is provided with a locking piece for locking the inserting type connector rotatablely arranged in the area of at least one inserting terminal. The locking piece is similar U-shape, with a U-shaped back covering the inserting type connector, a first U-shaped arm jointing the front edge of the inserting type connector as the positioning piece and a second U-shaped arm embedding the back edge of the inserting type connector at the back part. The locking piece is provided with a rotor which is arranged in the transition region from the U-shaped back to the second U-shaped arm.

The invention provides a self-protection type lawn trimmer with anti-stone-impact blades, and relates to the field of landscaping equipment. The problems that according to an existing lawn trimmer, the self-protection performance is not high, grass with overlong length is prone to winding the blades, and the operation after rainy days is not easy are solved. The self-protection type lawn trimmer with the anti-stone-impact blades comprises a working chassis, a cutting operation mechanism, a grass collecting bag, a pushing handle and a power device. According to the self-protection type lawn trimmer with the anti-stone-impact blades, after the lawn trimmer is improved, cutters can effectively prevent from being damaged when the cutters collide with stone through the flexible design of a plurality of grass cutting devices, at the same time, the minimality of to-be-cut areas of weeds can be realized through the design of the coordination of the multiple grass cutting devices and the multiple blades, the collecting of a collecting bag is facilitated, and meanwhile, the influence on the normal operation of the cutters due to the fact that the weeds are too long is avoided; and the inneraseismic design of bearing rods can effectively prevent the cutters from being loosened when the cutters are impacted by the stone.

The invention discloses a river channel water sampling apparatus, comprising a sample vessel and a threaded rod. A water pump and a fixing plate are fixed to the top of the sampling vessel; a water pipe is fixedly connected with a water inlet of the water pump; an electromagnetic valve is mounted outside the water pipe; the fixing plate is of L-shaped structure; the top of the fixing plate is provided with a mounting hole, a connection hole and a through hole; the through hole and the connection hole are positioned in the two sides of the mounting hole respectively; a threaded sleeve is arranged in the mounting hole; the two ends of the threaded sleeve are extended out of the mounting hole; the side, close to the connection hole, of the mounting hole is provided with a spring hole; a spring and a clamp block are arranged in the spring hole; an adjusting post is welded to one side of the clamp block; the connection hole is communicated with the spring hole. The river channel water sampling apparatus is reasonable in structure, ingenious in design and simple to operate, and the defect of the prior art is overcome that fixed point sampling of a water sampler has poor accuracy.

The invention relates to the technical field of hydraulic winches, and discloses a hydraulic winch for underwater lifting of a ship crane. The hydraulic winch comprises a base, wherein the left side of the top of the base is fixedly connected with the bottom of a bidirectional hydraulic cylinder, the output end of the left side of the bidirectional hydraulic cylinder is fixedly connected with theright end of a push rod, the left end of the push rod is fixedly connected with the middle of a piston plate, and the outer side wall of the piston plate is slidably connected with the inner wall of an oil cylinder. According to the hydraulic winch for underwater lifting of the ship crane, the output end of a hydraulic motor drives a driving gear to rotate while driving a rotating shaft and a winding shaft to rotate, and the driving gear is matched with two sets of driven gears, so that a rotating disc drives a shifting rod to shift a stepping seat to rotate by 90 degrees in the rotating process; and through the guiding effect of a sliding rod on a sliding groove and the threaded fit of a lead screw and a screw seat, the screw seat moves by one fourth of the screw pitch length every time,the arrangement direction of steel wires is conveniently controlled, and the situation that the steel wires are staggered and separated when wound on the winding shaft is avoided.

The invention relates to the field of scaffolds for buildings, and particularly relates to a scaffold diagonal bar. The scaffold diagonal bar comprises a diagonal steel pipe and a fastener assembled on the diagonal steel pipe, wherein the fastener comprises a sliding sleeve which is sleeved on the diagonal steel pipe in a sliding manner; two hinged supports are oppositely arranged on the outer side of the sliding sleeve; the hinged axles of the hinged supports are parallel to each other and in spatial crossing with the center line of the sliding sleeve; a set included angle of 30-60 degrees is formed between the center line of the sliding sleeve and the hinged axis of each hinged support; the upper parts of the two hinged supports define a containing opening for containing a basic steel pipe of a scaffold, and the lower parts of the hinged supports define an expanding block mounting groove; the wall of the sliding sleeve is provided with an opening through inside and outside between the two hinged supports; the expanding block mounting groove is internally provided with an expanding slider wedged between the diagonal steel pipe and the basic steel pipe in the containing opening; and the diagonal steel pipe is provided with corresponding limit structures at both ends of the sliding sleeve. The scaffold diagonal bar is convenient to use and high in safety.

The invention discloses a cylinder sieving machine convenient for taking black tea, which comprises a base, a connecting disc and a third connecting rod, wherein a motor is fixedly arranged at the bottom left inside the base; the first connecting rod is connected the upper part of the base in a penetrating way;the right rear part and the right front part of the first gear are meshed with the thirdgear through the second gear;the upper surfaces of the third gear and the fourth gear are fixedly connected with a second connecting rod;the connecting disc is positioned above the upper part of thesecond connecting rod;the inner clamping groove of the connecting disc is connected with a first sieving tray; the clamping groove above the fourth sieving tray is connected with a fifth sieving tray;the third connecting rod sequentially penetrates through the sealing cover and the connecting disc from top to bottom, and the lower part of the nut is connected with a fixing disc. The cylinder sieving machine convenient for taking black tea can be conveniently installed and disassembled, wherein the installation is relatively firm, the black tea can be conveniently taken, and the sieving is relatively sufficient.

The invention discloses an ocean engineering structure monitoring device capable of resisting large impact force. The ocean engineering structure monitoring device comprises a monitoring equipment body, a support is welded to the center of the front face of the top of the monitoring equipment body, a camera is embedded in the top of the front face of the support, and display screens are sequentially embedded in the top of the front face of the monitoring equipment body from left to right. According to the ocean engineering structure monitoring device capable of resisting the large impact force, through cooperation of a first sliding groove, a positioning groove, a threaded cylinder, a threaded rod, a rotating disc, a handle, a moving seat, a first sliding block and a positioning rod, a fixing frame and a reinforcing seat can be positioned and stabilized, so that the monitoring equipment body is reinforced through a mounting seat, and the monitoring equipment body and the mounting seat are prevented from being broken and falling off due to stress; and through cooperation of a sliding groove frame, a second sliding groove, a second sliding block and an elastic ring, the two sides of the center of an anti-collision plate can be elastically buffered, and through cooperation of a fixing cylinder, an elastic material, a sliding base and a sliding rod, the periphery of the anti-collision plate can be elastically buffered.

The invention discloses a combination cover-typed cut-off valve, relates to a cut-off valve part which is adopted by all the industries installed with pipelines, such as petroleum, chemical, metallurgical, power, and real estate industries, etc. and plays a role of fastening a valve stem and a valve body; the middle of the valve body (15) is provided with a joint nut (13) which fixes a valve cover (7) on the valve body (15); the center of the valve cover (7) is axially provided with the valve stem (4); a valve core (14) is connected with the valve body (15) at the lower end of the valve stem (4); the upper part of the valve cover (7) is provided with a lock nut (6); the middle part of the valve cover (7) is provided with a panel thin nut (8); a packing pad (12), a packing support (11), a filling (10), and an upper packing pad (9) are arranged between the valve cover (7) and the valve stem (4) from down to up. As the valve core is connected with the valve stem by a movable rivet in design, the leakage due to the friction scratch which is caused by the valve core sealing surface and the valve body when the valve core sealing surface rotates is avoided, thereby greatly improving the sealing performance and prolonging the service life of the valve.

The invention belongs to the technical field of welding, and discloses a welding table for a welding device. The welding table comprises a base, four base rods are installed at the top of the base, every two of the four base rods form a group and are symmetrical in pairs, side frames sleeve the four base rods, a base table is installed among the four side frames, and second inserting holes are formed in the top of the base table. First inserting holes are formed in the circumferential surface of the base table, and first clamping grooves are formed in one sides, opposite to the base table, of the four base rods. According to the welding table for the welding device, a rotating roller is driven by a motor to rotate, clamping teeth are driven by the rotating roller to rotate, through cooperation of the first clamping grooves, the side frames move on the base rods, the base table is driven by the side frames to move, the base table moves on the base rods, the welding table is convenient to adjust, can be used at different heights, and can be adjusted according to actual requirements of a user, so that the workpiece welding difficulty of the user is greatly reduced, and the workpiece welding efficiency of the user is improved.

The invention relates to the field of scaffolds for buildings, and particularly relates to a scaffold upright tube. The scaffold upright tube comprises a vertical steel pipe and a fastener, wherein the fastener comprises a sliding sleeve which is sleeved on the vertical steel pipe; at least one pressing assembly is arranged on the outer side of the sliding sleeve and comprises two hinged supports; one of each two hinged supports is hinged with a pressure cover and the other one of the two hinged supports is hinged with a hasp; the hinge axles of each two hinged supports are parallel to each other and in spatial square crossing with the center line of the sliding sleeve; the upper parts of the two hinged supports of each pressing assembly define a containing opening for containing a horizontal steel pipe, and the lower parts of the hinged supports define an expanding block mounting groove; an opening is arranged between the two hinged supports of each pressing assembly on the wall of the sliding sleeve; an expanding sliding block is arranged in the expanding block mounting groove in an up-down anti-off manner; and the vertical steel pipe is provided with corresponding limit structures at the two ends of each fastener. The scaffold upright tube solves the problem that the constructing and dismantling efficiency of a scaffold is low, and the safety performance of the scaffold is improved.

The invention discloses an air pipe quick joint. The air pipe quick joint comprises a joint body, wherein the joint body comprises a pipe head and a pipe tail, the joint body is integrally cast, raised safety barbs are arranged on the surface of the pipe head, clamping jaws are arranged on the pipe head in an axial symmetry mode, clamping grooves are formed in the clamping jaws, a convex sealing gasket is arranged in the pipe head, the convex sealing gasket is a natural rubber convex sealing gasket, the pipe tail is a fine corrugated pipe tail, and a smooth groove is formed in the tail end inlet of the pipe tail. According to the safety barb design, the locking effect is enhanced, and accidental loosening is avoided; the sealing gasket with the intelligent compensation function is arranged, so that the excellent sealing performance is achieved; the pipe tail is the fine corrugated pipe tail, so that the internal buckling force grabbing force is improved, and the whole stability and thesafety of the buckling-pressing are ensured; and the inlet is smooth, and the design of the groove is realized, so that the force path is saved when the joint enters a hose, and the flow of fluid islarger when the fluid passes through the hose.

The invention relates to the technical field of numerical control machine tool spindle installation, in particular to a numerical control machine tool spindle unit installation structure which comprises a spindle box, a spindle sleeve is fixedly connected to the interior of the spindle box through a first fixing mechanism, and multiple sets of connecting mechanisms are arranged on the outer side of the spindle sleeve at equal intervals. A plurality of second fixing mechanisms corresponding to the connecting mechanisms are arranged at the top of the main shaft sleeve, and a power mechanism is arranged in the main shaft sleeve; a plurality of second fixing mechanisms for reinforcing the spindle box are arranged on the spindle sleeve, so that the stress area is increased, the whole structure has stable retentivity, and more advantageously, when the power mechanism is mounted and operated, even if an application occasion driven by a belt pulley is encountered, the axial space between the belt pulley and the spindle sleeve can be utilized, so that the power mechanism can be stably fixed. And the main shaft sleeve can be quickly mounted and fixed without dismounting the belt pulley.

The invention discloses a multifunctional automobile headlamp testing fixture. The fixture comprises a chassis, wherein a clamp is fixedly arranged on the chassis, a mounting seat is fixed to the middle of the chassis, a mounting groove is formed in the center of the mounting seat, a positioning mold is placed at an upper end of the mounting seat, and a mounting block is fixed to a bottom end of the positioning mold; a lower end of the mounting block is embedded into the mounting groove, a first movable bin is formed in one end of the mounting groove, a limiting rod is arranged in the first movable bin in a sleeved mode, and a limiting groove is formed in one end of the mounting block. Through mutual cooperation of the mounting seat, the mounting groove, the mounting block, the first movable bin, the limiting rod, the limiting groove, a positioning block, a first spring and a pull handle, problems that when different automobile headlamps need to be detected, detection tools of corresponding models need to be prepared in advance, purchase cost is increased, and the work preparation time is also increased are solved.

The medium-light-intensity aviation obstruction beacon comprises a lamp body, a lamp body flange is integrally formed at the bottom of the lamp body, the bottom of the lamp body flange is in threaded connection with a lamp holder flange through a fastening bolt, a lamp holder is integrally formed at the bottom of the lamp holder flange, and sealing structures are arranged on the opposite outer sides of the lamp holder flange and the lamp body flange. A connecting column is vertically connected to the center of the bottom of the lamp holder in a bolting mode, and a reinforcing disc is connected to the bottom of the connecting column in a bolting mode. Through cooperation of the sealing washers, the connecting position of the lamp body flange and the lamp holder flange can be sealed, through cooperation of the limiting holes, the hoops, the limiting columns and the connecting bolts, the outer side of the connecting position of the lamp body flange and the lamp holder flange can be subjected to sealing and waterproof treatment again, and external rainwater is prevented from entering the lamp body to damage components of the lamp body; through the water swelling glue, after the interior of the hoop is soaked in water, sealing waterproof protection treatment can be conducted between the lamp body flange and the lamp holder flange through swelling changes.

The invention belongs to the technical field of auto parts processing, and discloses an auto casting cutting device, comprising a base, a mounting frame is fixedly connected above the base, a hydraulic cylinder is fixedly connected to the top of the mounting frame, and the hydraulic cylinder A moving rod is installed at the bottom, a cutting knife is installed at the bottom of the moving rod, two second transmission rollers are symmetrically rotated and connected to both sides of the top of the base close to the mounting frame, and the two second transmission rollers are arranged between the two second transmission rollers. A second conveyor belt is provided, and the present invention drives the second transmission roller to rotate through the second motor, thereby driving the second conveyor belt to rotate, driving the first transmission roller to rotate through the third motor, thereby driving the first conveyor belt to rotate, and passing the first conveyor belt to rotate. The conveyor belt and the second conveyor belt drive the automobile castings to move, so that the user does not need to move the castings manually, which can form a flow-type operation, which not only reduces the work intensity of the user, but also improves the moving efficiency of the castings, and also improves the efficiency of the device cutting the castings. efficiency.