103results about How to "Avoid reverse rotation" patented technology

The invention belongs to the technical field of steel structure welding, particularly relates to welding equipment for steel structure production, and aims to solve the problem that in the prior art, a positioning mechanism can cause deviation of an originally designed welding seam position of a steel structure in the steel turning process, and then deviation of a later welding seam is caused. Two parallel ground rails are fixed to the positions, close to the ground, of the side face of the main supporting frame, and the same sliding supporting frame is slidably connected to the upper portions of the two ground rails. According to the clamping device, when the clamped steel structure body rotates to any position and stops, structural self-locking can be formed at the same time, the clamping device is matched with a main body positioning clamping device, the clamping degree is controlled by the extrusion force of the end of the extension rod of the hydraulic ejector rod, the clamping force can be controlled to be increased as much as possible, a certain buffer space is reserved all the time, and the service life of the clamping device is prolonged. And rigid contact is prevented from being formed, so that an extrusion notch is formed in the contact position of the steel structure body.

The invention discloses a continuous fiber reinforced co-extrusion die, a forming line body and a fiber reinforced foaming floor, and relates to the technical field of foaming floors, the continuous fiber reinforced co-extrusion die comprises a die body, the front end face and the rear end face of the die body are a mixed extrusion face and a core material feeding face respectively, and one side face of the die body is provided with a shell material feeding port; a core material supply channel penetrating through the mixed extrusion face and the core material supply face is formed in the mold body, a shell material supply cavity surrounding the core material supply channel is formed in the mold body, two fiber channels are formed in the mold body, the two fiber channels are symmetrically arranged up and down, and the fiber channels are arc-shaped bent channels. The forming line body comprises a continuous fiber reinforced co-extrusion die, a core material extruder and a shell material extruder; a shaping module, a vacuum water cooling group, an open type water cooling group and a traction machine are sequentially arranged on the mixed extrusion surface of the mold body. According to the invention, the overall strength and performance of the composite material are optimized, and uniform distribution and orientation of reinforced fibers are ensured.

The invention relates to the technical field of steel bar truss assembling, in particular to a floor support plate steel bar truss automatic assembling device which comprises an assembling supporting assembly, a clamping assembly and a centering assembly. A plurality of sliding grooves distributed front and back are formed in the left end and the right end of the top of the assembly table, and a torsion assembly is arranged on the side portion of the assembly table. The transverse reinforcing steel bar is clamped and fixed through the two grooves which are folded front and back to prevent the transverse reinforcing steel bar from moving, due to the fact that the transverse reinforcing steel bar is pressed on the top of the longitudinal reinforcing steel bar, limiting of the longitudinal reinforcing steel bar is achieved, and before the transverse reinforcing steel bar is clamped through the two grooves, position centering of the transverse reinforcing steel bar is completed through the two centering push heads of the centering assembly. Therefore, the regularity of the assembled floor support plate steel bar truss can be ensured.

The invention provides a deep ultraviolet LED sterilization and disinfection water tank, and relates to the technical field of sterilization and disinfection water tanks. The bottom of the upper box body is fixedly connected with a middle box body, and the bottom of the middle box body is fixedly connected with a lower box body; the outer part of the lower box body is connected with a positioning hoop, and the positioning hoop is connected with the upper box body; a box top cover is buckled on the top of the upper box body, a rubber sealing ring is mounted in the box top cover, and an LED deep ultraviolet lamp is mounted in the bottom of the box top cover. The box top cover is rotated, the inclined face B and the inclined face A are in contact stress, the box top cover moves downwards, the top of the upper box body makes close contact with the rubber sealing ring, the box top cover is locked and fixed in a one-way mode through the movable locking sleeve, reverse rotation of the box top cover is prevented, the sealing effect in the water tank is guaranteed, and maintenance and replacement operation on the LED deep ultraviolet lamp in the water tank is facilitated. The problems that in order to guarantee the sealing performance of an existing sterilization and disinfection water tank, a tank body and a tank cover are mostly fixed through bolts, and an LED ultraviolet lamp is inconvenient to overhaul and replace in the later period are solved.

The invention discloses oyster shell powder processing and crushing equipment and a crushing method thereof. The crushing equipment comprises a machine shell, a crushing device and a crushing device, wherein the machine shell is provided with a crushing cavity; the crushing mechanism comprises a group of crushing rollers rotationally mounted in the crushing cavity, the outer side walls of the group of crushing rollers are fixedly connected with crushing convex blocks respectively, and the crushing convex blocks on different crushing rollers are arranged in a staggered manner respectively; the crushed material reinforcing mechanism comprises a fixed supporting piece, the fixed supporting piece is inwards and fixedly connected with an arc-shaped limiting plate, and the arc-shaped limiting plate is fixedly connected with a corresponding ultrasonic transducer; the material crushing protruding blocks are arranged in a hollow mode and fixedly provided with corresponding abutting pieces, and the inner ends of the abutting pieces make contact with the arc-shaped limiting plates when rotating to pass through the arc-shaped limiting plates. According to the oyster shell crushing device, vibration energy can be effectively applied to the crushing convex blocks which rotationally pass through the opposite sides of the group of crushing rollers, so that the crushing effect and the crushing efficiency of oyster shell materials are effectively improved.

The present application relates to the technical field of motor bases, and discloses a mounting base for traction motors of rail vehicles, which is used to solve the problem that the threaded hole of the traction motor is difficult to accurately align with the mounting hole of the mounting base. A limit block and a moving block are provided in a sliding groove on one side of the mounting hole, the lower end of the moving block is threadedly connected with a threaded column I, and the side wall of the upper end of the moving block is provided with a telescopic strip, a threaded column II and a plug column; when the threaded hole of the traction motor is close to the mounting hole of the mounting base, the moving block is moved up by twisting the threaded column I, and the threaded column II is twisted to adjust the extension length of the telescopic strip, so that the plug column is inserted into the threaded hole. At this time, the position of the traction motor is adjusted by rotating the threaded column II in the opposite direction, and then the descending traction motor and the moving block are guided by the limit block and rotated back to the original position, so that the threaded hole of the traction motor and the mounting hole of the mounting base are in the same straight line, so as to prevent the threaded hole and the mounting hole from deviating, and the position of the traction motor is adjusted for a long time, which affects the installation efficiency of the traction motor.

The utility model belongs to the technical field of thermal power plants, and particularly relates to a thermal power plant EH oil system high-pressure explosion-proof connector which comprises a transmission pipe and a connecting bolt installed on one side of the transmission pipe, a positioning clamp is installed on one side of the connecting bolt, an anti-disengaging block is arranged at one end of the positioning clamp and connected with a clamping ring, and the clamping ring is connected with the transmission pipe. According to the device, the transmission pipe and the connecting base can be rapidly connected through rotation between the connecting bolt and the mounting nozzle, and meanwhile, under pushing of the connecting bolt, connection between the positioning clamp and the clamping ring and connection between the anti-disengaging block and the clamping ring can be further driven; and after the connecting bolt and the mounting nozzle are connected, reverse rotation between the connecting bolt and the mounting nozzle can be avoided, so that loosening and even loosening between the connecting bolt and the mounting nozzle can be prevented, and stable and effective guarantee can be provided for production safety.

This utility model discloses a folding cabinet, which includes a front panel, a rear panel, a top panel, a bottom panel, a top stopper, a bottom stopper, and a foldable side panel in the middle. One side panel is rotatably mounted on one side of the front panel and one side of the rear panel, respectively, and the other side panel is rotatably mounted on the other side of the front panel and the other side of the rear panel, respectively. The top stopper is disposed on one of the top of the front panel and the top of the rear panel. The pivot side of the top panel is rotatably mounted on the other of the top of the front panel and the top of the rear panel, and the free side of the top panel can be blocked by the top stopper. The bottom stopper is disposed on one of the bottom of the front panel and the bottom of the rear panel. The pivot side of the bottom panel is rotatably mounted on the other of the bottom of the front panel and the bottom of the rear panel, and the free side of the bottom panel can be blocked by the bottom stopper.

The utility model discloses an elastic reset type motor positive and negative rotation brake device, which relates to the technical field of motor control, and comprises a fixed shell and two brake pads, two limiting plates and two limiting rings are connected in the fixed shell in a sliding manner, two ends of each limiting plate are fixedly connected with the adjacent limiting rings, and the two ends of each limiting plate are fixedly connected with the corresponding brake pad. Two limiting rods are fixedly connected between the inner walls of the limiting ring, penetrate through the brake pad and are in sliding connection with the brake pad; a motor shaft body; according to the brake device, the first electric push rod is started to drive one of the clamping rings to be clamped with the positioning ring, and the clamped spring is replaced by starting the first electric push rod before the motor shaft body brakes, so that the spring is driven to contract to drive the brake pad to clamp and decelerate the motor shaft body, and brake resistance can be provided when the motor slides down in a power failure; when the motor slides down due to insufficient torsion, the motor shaft generates frictional resistance to prevent the motor shaft from rotating reversely.

The utility model discloses a livestock breeding sheep opening device, which relates to the technical field of animal husbandry, and is characterized in that the livestock breeding sheep opening device comprises a casing, a second grip, a first different gear and a connecting column, the second grip is fixedly connected with the first different gear, the first different gear is fixedly connected with the connecting column, and the first different gear is rotatably connected with the casing; the end, away from the second grip, of the first different gear is connected with a first T-shaped connecting piece, the end, away from the first different gear, of the first T-shaped connecting piece is provided with a first connecting rod, the end, away from the first T-shaped connecting piece, of the first connecting rod is provided with a first inserting piece, the first different gear is in meshed connection with a second different gear, and the second different gear is rotationally connected with the machine shell. A second T-shaped connecting piece is connected to the end, away from the second grip, of the second special-shaped gear, a second connecting rod is arranged at the end, away from the second special-shaped gear, of the second T-shaped connecting piece, and a second inserting piece is arranged at the end, away from the second T-shaped connecting piece, of the second connecting rod. The sheep mouth opener has the advantages that sheep mouths can be opened, and herdsmen can feed medicine conveniently.

The utility model relates to the field of railway platform protection equipment, in particular to a rope winding tensioning mechanism which comprises a rope winding base and a passenger intercepting rope, a passenger intercepting rope leading-in device and a rope pressing device are respectively arranged on the rope winding base, and the rope pressing device is rotatably arranged on the rope winding base. The passenger intercepting rope penetrates through the passenger intercepting rope leading-in device to enter the rope winding base and then is fixed on the rope pressing device; the rope winding base is provided with a rope winding anti-skid device used for preventing the rope pressing device from reversely rotating in a non-control state, according to the rope winding tensioning mechanism, the passenger intercepting rope is conveniently guided into the rope winding base through the arrangement of the passenger intercepting rope guiding-in device, the rope pressing device can press and fix the passenger intercepting rope, and the rope winding anti-skid device is used for preventing the rope pressing device from reversely rotating in the non-control state. When the rope pressing device rotates, the passenger intercepting rope can be wound, and the rope winding anti-skid device is arranged, so that the situation that the rope pressing device rotates reversely can be avoided.

The check valve comprises a shell, a connecting cylinder is arranged at the left end of the shell, a mounting seat is arranged at the right end of the shell, the shell is of a structure with a rightward opening, a through groove is formed in the left wall of the shell, the connecting cylinder is of a left-right communicated structure, the inner diameter of the connecting cylinder is consistent with the size of the through groove, a plurality of fan-shaped rotating plates are arranged in the through groove, and each rotating plate is of a one-way rotating structure. A buckle is arranged on the periphery of the connecting cylinder, a protrusion is arranged at the top end of the buckle and faces the connecting cylinder, a protruding ring is arranged on the outer wall of the connecting cylinder, a rotating shaft of the rotating plate is transversely installed on the bottom wall of the shell, and limiting parts are arranged at the two ends of the rotating shaft. The traditional operation that screws need to be screwed on the four corners of the mounting base is replaced with the screwing pieces, and mounting is more convenient and faster. The aluminum cigarette tube penetrates through the connecting cylinder, the buckle is clamped on the outer surface of the aluminum cigarette paper, the traditional operation that the aluminum cigarette paper is installed through a hoop and a bolt is replaced, installation is convenient, and the aluminum cigarette paper can be rapidly disassembled when needing to be repaired and maintained.

The utility model discloses a slope protection device for protection of a pipe-protection-free integrated silt dam, belongs to the technical field of water conservancy projects, aims at solving the problem that a fixing cone is loosened as time goes by after being inserted into the ground, and comprises a frame body, and two partition plates are fixedly connected to the inner wall of the frame body. By arranging the positioning mechanism, the rocker is rotated to drive the first rotating shaft to rotate, the first rotating shaft drives the gear to rotate, and the gear drives the tooth groove to move while rotating, so that the insertion rod descends to be inserted into the ground, and the insertion rod is inserted into the ground, so that the water permeable holes are uniformly distributed, and the tenon is fixedly connected to one side of the frame body. The device is stably and fixedly connected to the ground, the counterweight separation blade is matched with the ratchet wheel to prevent the ratchet wheel from rotating reversely, so that the insertion rod is prevented from moving upwards, and when the insertion rod is loosened, a worker can rotate the rocker to adjust the depth of the insertion rod into the ground according to actual conditions, so that the device is always kept stable.

The utility model relates to the technical field of winch lifting devices, and discloses a safety type double-output winch lifting device which comprises a bottom plate, a plurality of fixing plates are fixedly connected to the side face of the bottom plate, first shells are fixedly connected to the side faces of the two fixing plates, and driving assemblies are arranged on the inner sides of the two first shells. Second shells are fixedly connected to the side faces of the other two fixing plates, clamping assemblies are arranged on the inner sides of the second shells, a plurality of supporting plates are fixedly connected to the side face of the bottom plate, and reciprocating limiting assemblies are arranged on the side faces of the two supporting plates. According to the rope limiting device, the sliding groove lead screw is matched with the limiting rod, the limiting block can move in the direction of the limiting rod, the clamping block moves on the surface of the sliding groove lead screw along with the limiting block, meanwhile, height adjustment of the limiting ring is achieved through the hole shell and the hole plate through the fixing bolt, and therefore the rope is accurately limited. The position of the clamping block on the sliding groove lead screw can be accurately controlled through a groove in the surface of the sliding groove lead screw.

The utility model relates to the technical field of clamps, in particular to a quick-opening clamp structure of a miniature reaction kettle. The kettle comprises a quick clamping assembly, a kettle body and a kettle cover are connected through the quick clamping assembly, and an anti-loosening assembly and a fixing assembly are arranged on the quick clamping assembly. Through the design of the quick clamping assembly, the kettle body and the kettle cover are extremely simple, convenient and quick to connect and disassemble, the left half lantern ring shell and the right half lantern ring shell are connected through the first rotating shaft, an operator only needs to manually rotate the right half lantern ring shell to realize opening and closing of the lantern ring, and compared with a traditional complex connecting mode, the connecting structure has the advantages that the structure is simple and convenient; the operation time and the labor cost are greatly saved, and the working efficiency can be remarkably improved especially in an experiment or production scene where the reaction kettle needs to be frequently opened and closed.

The invention provides a high-efficiency light emitter, and relates to the technical field of light emitters. The top of the laser main body is connected with a tube core connecting sleeve, and the top of the tube core connecting sleeve is connected with an optical fiber adapter; the top of the tube core connecting sleeve is connected with two butt-joint insertion blocks, and the butt-joint insertion blocks are connected with the optical fiber adapter; a movable sliding sleeve is sleeved outside the pipe core connecting sleeve, a stress ring is connected inside the pipe core connecting sleeve, and the stress ring is connected with the movable sliding sleeve. According to the invention, the laser main body and the tube core connecting sleeve are connected together in a rotary clamping manner, and the optical fiber adapters with corresponding specifications are selected according to different diameters of the optical fibers and are inserted into the tube core connecting sleeve, so that the use requirements of the optical fibers with different diameters are better met, and the later disassembly, maintenance and replacement are simpler and more convenient. The problems that all parts of a traditional light emitter are connected in an ultrasonic welding mode, the traditional light emitter can only meet the use requirement of specific optical fibers, and use limitation exists are solved.

The utility model provides a battery pack air tightness detection tool, which comprises a base and a pressing assembly arranged above the base, an accommodating space for accommodating a battery pack is formed between the base and the pressing assembly, the pressing assembly comprises a support frame arranged on the base in an up-and-down sliding manner, and the support frame is arranged on the base in an up-and-down sliding manner. The supporting frame is arranged on the base, the mounting plates are arranged on the supporting frame and arranged in the length direction of the base at intervals, each mounting plate is in threaded connection with a plurality of screw rods, the screw rods on each mounting plate are arranged in the width direction of the base at intervals, and one end of each screw rod extends into the containing space and can press the top of the battery pack. The battery pack air tightness detection tool is simple in design structure and can adapt to battery packs of different sizes, and a detection tool does not need to be independently designed for each type of battery pack.

The invention relates to a chain type kinetic energy striking device with high hit probability and low incidental damage, belongs to the technical field of ammunition, and solves the problems that a striking device in the prior art cannot effectively control the damage range and degree and has no differential striking outside a target range. The device comprises a housing and a striking body, the housing is connected with the striking body, and the striking body strikes a target by utilizing kinetic energy; the striking body comprises a rotating unit, a guiding unit and a kinetic energy unit, the guiding unit is connected with the rotating unit, the kinetic energy unit can be connected with the rotating unit, and the guiding unit is used for keeping the shape of the striking body. The multiple kinetic energy units form the striking face, the striking range of the striking device is a columnar area where the striking face skims over, the area outside the columnar area is completely free of killing, and compared with the spherical striking range of a fragment striking device in the prior art, the striking device can not depend on the probability striking mode of fragments, and the striking range of the striking device is larger than the spherical striking range of the fragment striking device. And the striking range is controllable.

The utility model belongs to the technical field of petroleum drilling and production mechanical equipment, and discloses a vertical transmission chain box with a novel structure. The input shaft and the output shaft are arranged in parallel, and the chain is in vertical transmission. A push disc clutch is installed at the end of a chain box input shaft assembly, an inner gear ring is designed to be connected with a clutch friction disc, meanwhile, a connecting disc is designed to be connected with the inner gear ring and a chain wheel, and rolling bearings are arranged inside and outside the chain wheel. A friction hub is designed at the end of the output shaft, and a pneumatic tire clutch and a connecting disc are installed outside the friction hub to serve as a reaction torque releasing device. According to the chain box, independent hanging or separation can be achieved through power, and abrasion and equipment loss caused by idle running of the chain are avoided. Meanwhile, the anti-torque release device arranged on the output shaft can release the deformation energy of the drill rod, the drill rod cannot rapidly and reversely rotate, and the safety performance of petroleum drilling equipment is greatly improved.

The utility model relates to the technical field of automobile fasteners, and discloses an automobile fastener with an anti-loosening structure, which comprises a shell and a bolt, and the anti-loosening mechanism is fixedly mounted on the inner wall of the shell; the anti-loosening mechanism comprises a mounting sleeve, the side face of the mounting sleeve is fixedly connected with the inner wall of the shell, and a sliding groove is fixedly formed in the inner wall of the mounting sleeve. The limiting block is aligned with the limiting groove, the bolt is inserted into the limiting groove, the bolt is connected with an automobile installation position through the wrench, the limiting block abuts against the limiting groove when the bolt rotates, the rotor and the sliding ring are driven to rotate, then the ratchet wheel is driven to rotate, and after the bolt and the nut are fastened and connected, the connecting rod is further driven to rotate through rotation of the wrench. And then the shifting block installed on the side face of the connecting rod is driven to deflect, then the clamping block is driven to deflect, the abutting direction of the clamping block and the ratchet wheel is changed, limiting is conducted through the reset spring, the situation that the bolt is loosened due to rotation of the bolt caused by vibration is prevented, and the anti-loosening performance of the bolt is improved.

The rotation stopping mechanism comprises a large gear and a tray, the tray is rotationally connected with a shell, a groove is formed in the center of the large gear, the tray is embedded into the groove, a resistance rotation stopping part is arranged on the side wall of the groove, a first pawl is arranged on the side wall of the tray, and a second pawl is arranged on the side wall of the first pawl. And the first pawl is in contact with the resistance rotation stopping part. Compared with the prior art, the first pawl and the resistance rotation stopping part are matched with each other, the tray can drive the large gear to rotate together when supplying a film belt in a rotating mode, the small gear is driven to rotate through the transmission gear, the small gear rotates to wind the film belt, the structure is simpler, the tray and the large gear are matched more firmly, and the film belt can be wound more stably. And disassembly and assembly are more convenient and faster.

The invention discloses an anti-congestion face recognition gate for a security check channel, and relates to the technical field of gates. The device comprises two box bodies and swing gate mechanisms installed on the two box bodies. By adopting the linkage design of the shunting mechanism and the trigger plate, when a worker steps on the trigger plate through the shunting mechanism, the movement of the shunting mechanism can be limited through the trigger plate, and workers behind are prevented from advancing, so that a detection section which is not influenced by other workers can be formed between the swing gate mechanism and the shunting mechanism; therefore, the influence of external factors on the face recognition device is reduced, it can be guaranteed that the face recognition device can operate at a high speed, worker information is effectively recognized, and workers are not prone to congestion at the position; a worker can carry out online registration by pressing a shooting button and open a gate mechanism to enter the construction site through the security booth, so that the congestion phenomenon is reduced.

An isolation safety box suitable for a permanent magnet submersible motor comprises a box body, a vacuum contactor, a feed induction disconnecting link, a voltage transformer and a power-down time-delay relay are arranged in the box body, the vacuum contactor, the feed induction disconnecting link, the voltage transformer and the power-down time-delay relay are connected with a main loop matching circuit, and an opening and closing door plate is arranged on the box body. A high-voltage voltmeter, a three-gear change-over switch, a first self-reset button and a second self-reset button are arranged on the door plate, the high-voltage voltmeter and the three-gear change-over switch are connected with the main loop in a matched mode, and the first self-reset button and the second self-reset button are connected with the vacuum contactor and correspondingly control the suction and disconnection work of the vacuum contactor. The beneficial effects of the utility model are that when a frequency converter or a unit is shut down due to faults, the feed induction disconnecting link is operated, and the main loop is delayed and disconnected through the power-adjusting delay relay, thereby preventing the permanent magnet submersible motor from rotating reversely under the influence of falling of a liquid column and preventing the permanent magnet rotor from rotating reversely to generate electric energy to influence other equipment and cause safety risks.

The utility model discloses an electrician casing pipe connector, which belongs to the technical field of electrician wiring equipment and comprises a first connector and a second connector, a connecting sleeve and a connecting piece are fixedly connected with connecting pipes, the inner side of each connecting pipe is in threaded connection with a casing pipe, and the outer side of the connecting piece is fixedly connected with a first rack. A second rack matched with the first rack is fixedly connected to the inner side of the connecting sleeve, and a spring is installed between the connecting sleeve and the connecting piece. By rotating the first connector and the second connector, the first rack and the second rack slide relatively, the spring is compressed at the same time, and when a proper angle is reached, the first connector and the second connector are loosened, the spring can apply a reverse force to the first connector and the second connector, so that the spring can rotate; however, the first rack and the second rack are sawtooth-shaped racks and can prevent the first connector and the second connector from rotating reversely, so that the connector is suitable for butt joint of sleeves of various angles during wiring, and the connector is simple in arrangement and convenient to use.

The utility model provides a blast heating device for rock wool insulation board production, which comprises a shell, one side of the shell is fixedly connected with a driving motor, one end of the driving motor is welded with a turbine fan blade, the other side of the shell is in threaded connection with an air inlet baffle, the outer side of the shell is fixedly connected with an air outlet pipe, and the air outlet pipe is in threaded connection with the turbine fan blade. And an anti-backflow mechanism is arranged on the inner side surface of the air outlet pipe. According to the blast heating device for rock wool insulation board production, through the arrangement of the backflow prevention mechanism, when the driving motor works, high-speed air impacts the movable baffle and blows up the movable baffle, the movable baffle rotates around the rotating shaft, the air enters the cupola furnace, blast heating is conducted on the interior of the cupola furnace, and after blast heating is completed, the backflow prevention mechanism is started; when flue gas in the cupola furnace flows back, the movable baffle falls down under the action of gravity, when the backflow flue gas impacts the movable baffle, the first fixed baffle and the second fixed baffle can prevent the movable baffle from rotating reversely, and therefore the backflow prevention effect of the blast equipment is achieved.

The utility model provides a turning-over device, and belongs to the technical field of medical instruments. The turning-over device solves the problem that the labor intensity of medical staff is greatly increased due to an existing turning-over device. The utility model relates to a turning-over device which comprises a body, a U-shaped groove and a stabilizing assembly. When physical therapy is carried out on a patient, the face, located on the stabilizing assembly, of the body needs to make contact with the contact face, the portion, making contact with the contact face, of the body is located between the supporting block and the induction block, then the two legs of the patient are put into the U-shaped grooves respectively, the body is rotated, and at the moment, the induction block in the low position makes contact with the contact face firstly and is squeezed; when the body rotates, air in the induction block enters the supporting block from the connecting pipe, the supporting block is extruded out of the storage groove, namely, the size of the supporting block becomes larger at the moment, the supporting block extends out of the body till the supporting block abuts against the contact face, and therefore the supporting block supports the body and prevents the body from rotating reversely, and the labor intensity of medical workers is reduced.

The utility model provides a kind of anti-loose nut for building belongs to nut technical field.It solves the problem that existing nut bolt connection is easy to loosen.The anti-loose nut for building, including the nut body with threaded hole in middle part and the gasket with through hole in middle part, gasket is the open gasket with opening, nut body and gasket between being equipped with when the width of opening is used to make the retraction structure smaller when both coaxial relative movement, nut body and gasket between still being equipped with ratchet and pawl structure.Gasket is open gasket, when nut body and gasket coaxial relative movement, guide cone hole can make gasket hug tightly screw rod, realize axial positioning, simultaneously through the ratchet and pawl structure of being set can prevent nut body reverse rotation, anti-loose effect is good, stable and reliable, and it has advantages such as reasonable structure design, easy to process, low manufacturing cost.

The utility model discloses a sectional type bolt fastening device with a self-locking function, which is applied to the field of bolt fastening devices and comprises a bolt head, a connecting rod is integrally formed on the surface of the bolt head, and a screw is arranged at one end of the connecting rod. The clamping block is clamped with the ratchet wheel under the action of the spring, so that the ratchet wheel rotates unidirectionally, the nut rotates unidirectionally due to the unidirectional rotation of the ratchet wheel, after the nut is fastened in place, the clamping block is clamped with the ratchet wheel, and the nut is prevented from rotating reversely, so that the purpose of having a self-locking function can be achieved, the stability of the fastener is ensured, and the safety is improved; according to the utility model, the second bolt is loosened by using a tool, the insertion rod is pulled out from the insertion hole, then the connecting rod with the required length is inserted into the insertion rod, the second bolt is mounted and tightened, and the second bolt is fixed, so that the purpose of adjusting the length can be achieved, the use cost is reduced, and the practicability and the applicability are improved.

The invention relates to the technical field of motor bases, discloses a mounting base for a traction motor of a railway vehicle, and aims to solve the problem that a threaded hole of the traction motor and a mounting hole of the mounting base are difficult to align accurately. A limiting block and a moving block are arranged in a sliding groove in one side of a mounting hole, the lower end of the moving block is in threaded connection with a threaded column I, and a telescopic strip, a threaded column II and an inserting column are arranged on the side wall of the upper end of the moving block; when the threaded hole of the traction motor is close to the mounting hole of the mounting seat, the movable block moves upwards by twisting the threaded column I, the extension length of the telescopic strip is adjusted by twisting the threaded column II, so that the insertion column is inserted into the threaded hole, the position of the traction motor is adjusted by reversely rotating the threaded column II, and then the descending traction motor and the movable block are guided by the limiting block; and the threaded hole of the traction motor and the mounting hole of the mounting seat are positioned on the same straight line, so that the influence on the mounting efficiency of the traction motor caused by long-time adjustment of the position of the traction motor due to deviation of the threaded hole and the mounting hole is prevented.

The application provides a multi-point sampling device for lake water quality inspection, and relates to the field of environmental monitoring, which comprises a winding mechanism, a cable rope, a plurality of sampling units arranged at intervals along the cable rope, and a control component, the winding mechanism is used for winding and unwinding the cable rope; each sampling unit comprises a sampling bottle and a solenoid valve arranged on the sampling bottle; a positioning assembly is detachably connected to the outer wall of the cable rope, and the sampling bottle is detachably installed in the positioning assembly; the control component is arranged on the winding mechanism and is used for controlling the opening and closing of the solenoid valves of the plurality of sampling units. The application solves the problem of few sampling points in the prior art by arranging the plurality of sampling units at intervals, and can simultaneously collect water samples at different depths; the depth sensor detects the depth in real time, the controller controls the opening and closing of the solenoid valve according to the preset depth, ensures the accuracy of the sampling depth, avoids the error of manual operation, and improves the reliability of the monitoring data; the limiting assembly prevents the reverse rotation of the winding wheel, and ensures the stability of the winding and unwinding of the cable rope.