29results about How to "The extraction process is smooth" patented technology

The invention provides a corn thinning auxiliary device which comprises a walking supporting mechanism, a lying plate, an isolation cover and a seedling pulling and smashing mechanism, the walking supporting mechanism is used for achieving walking and supporting of the lying plate, the lying plate can move up and down to be adjusted and positioned, an observation hole is formed in one end of the lying plate, and the seedling pulling and smashing mechanism is arranged in the observation hole. The isolation cover and the seedling pulling and smashing mechanism are hung at the bottom of the lying plate through a first tension spring and a second tension spring respectively, the isolation cover and the seedling pulling and smashing mechanism are adjacent to the observation hole, the isolation cover is used for achieving isolation protection of corn seedlings needing to be reserved, and the seedling pulling and smashing mechanism is used for achieving pulling and smashing of the corn seedlings needing to be pulled out. A worker lies on the lying plate for thinning operation, so that the labor intensity of the worker is greatly reduced; when two seedlings with close roots are thinned, corn seedlings in the isolation cover can be effectively prevented from being synchronously pulled out by utilizing the pressing effect of the edge of the isolation cover on the peripheries of the roots of the seedlings, so that the thinning quality can be improved.

The utility model discloses a magnetic type connector, and belongs to the technical field of connectors. The device mainly comprises a rubber-coated shell, the female end assembly is provided with a female end rubber core suitable for connection, and two sets of female end magnets are arranged in the female end rubber core; a male end assembly, a reset assembly and a separation assembly are included, the separation assembly comprises a shell and a button, the button is arranged in the shell in a sliding mode, and a first inclined sliding block is installed at the bottom of the button; the square frame is arranged in the shell in a sliding mode, and a rolling wheel is rotationally installed in the square frame and attached to the inclined face of the first inclined sliding block; the connecting rod is installed at one end of the square frame, and the end, away from the square frame, of the connecting rod is connected with the two sets of female end magnets. According to the magnetic type connector, through the separation assembly, when the female end assembly is pulled out, the male end magnet and the female end magnet are separated firstly, so that the attraction force in the male end magnet and the female end magnet is reduced, the female end assembly can be pulled out smoothly, and the effect of separating the male plug from the female plug smoothly is achieved.

The invention discloses a blocking and separating device for an oil way hole in a speed regulator, and relates to the technical field of speed regulator pressure maintaining tests. A strip-shaped hole is formed in one outer wall face of a speed regulator body, and a plurality of oil passing channels in the speed regulator body penetrate through and communicate with the strip-shaped hole; the communication positions of the multiple oil passing channels and the strip-shaped hole are arranged at intervals in the length direction of the strip-shaped hole, and the device comprises an expansion cylinder, and a plurality of sealing convex rings capable of expanding and shrinking in the radial direction are coaxially arranged on the peripheral wall of the expansion cylinder; the multiple sealing convex rings are arranged at intervals in the axial direction of the expansion cylinder. One end of the expansion plug rod can be inserted from a barrel opening in the top end of the expansion barrel, so that the barrel wall, inserted into the strip-shaped hole, of the expansion barrel expands, and then the multiple sealing convex rings are all plugged in the strip-shaped hole; a plurality of communicating channels communicating with the oil passing channels in a one-to-one correspondence mode are formed between the outer wall of the expansion cylinder and the inner wall of the strip-shaped hole and between any two adjacent sealing convex rings. The device is simple in structure, convenient to mount and dismount, resistant to high pressure, reliable and stable.

The utility model relates to the technical field of stainless steel filter screen storage, and discloses a stainless steel filter screen storage device which comprises a storage cabinet and a top cover placed in the storage cabinet, two sets of rail grooves are symmetrically formed in the inner side of an opening of the storage cabinet, and a plurality of sets of rolling assemblies are symmetrically arranged in the two sets of rail grooves. The top covers are placed between the upper rolling assembly and the lower rolling assembly, the rolling assemblies can be drawn out from the top of the storage cabinet, a magnetic stainless steel filter screen body is arranged on the top of the storage cabinet, and elastic protective blocking pieces are arranged on the inner bottom face of the storage cabinet from bottom to top at equal intervals. Due to the design of the sliding assembly, stable moving and positioning are provided, automatic adjustment can be carried out according to the thicknesses of different filter screen bodies, and the stable storage and the convenient taking-out process are ensured.

The present invention relates to the technical field of soft clay equipment, and specifically refers to a soft clay sampling device for dynamic triaxial experiments, which includes a first carrier plate, a second carrier plate fixedly mounted on the first carrier plate, wheel frame assemblies are provided on both sides of the first carrier plate and the second carrier plate, running wheels are provided at both ends of the wheel frame assembly, and running motors for rotating the running wheels are also provided at both ends of the wheel frame assembly, a sampling tube folding assembly is provided on the second carrier plate, multi-angle platforms are provided on both sides of the sampling tube folding assembly, and an electric telescopic sampler is provided under the multi-angle platform. The soft clay sampling device for dynamic triaxial experiments of the present invention has a small size, low manufacturing cost, avoids the risk of manual sampling, and is suitable for laboratory use.

The invention discloses an adapter and a quick-plugging optical fiber connection assembly, and relates to the field of optical distribution networks. The connector comprises a plug body, the plug body comprises a plug main body provided with a first cavity, an insertion core fixing part and a threaded connection part, and the insertion core fixing part and the threaded connection part are located at the two ends of the plug main body respectively; the plug middle pipe is arranged in the first cavity, and the plug middle pipe is provided with a second cavity; and the optical cable comprises an optical fiber, the optical fiber is accommodated in the second cavity, and the optical fiber and the inner wall of the second cavity are arranged at an interval. By using the optical fiber connecting assembly, the plugging operation of the adapter and the connector can be simply, conveniently and quickly completed, the locking force is reliable, and the problems that the plugging operation of the existing optical fiber connecting assembly is inconvenient, and the locking force is insufficient are effectively solved.

The invention discloses a physical exercise barbell disc machining device, and particularly relates to the technical field of barbell disc machining, the physical exercise barbell disc machining device comprises a machine tool frame and a barbell disc body, the machine tool frame is provided with a cleaning device and a machining device, and the side, close to the cleaning device, of the machine tool frame is provided with a transferring device; the machining assembly comprises a mounting frame fixed to one side of the machine tool frame and used for storing the barbell disc bodies, a mounting plate fixed to the side, close to the transfer device, of the machine tool frame and a sliding plate slidably connected to one side of the mounting plate. Through the arrangement of the machining assembly, it is ensured that a barbell disc body can be stably and accurately placed in the transfer device by the machining assembly, workers are prevented from feeling tired easily in the carrying process, it is ensured that the feeding position and angle of the barbell disc body each time can be kept accurate, and the overall machining efficiency of the barbell disc body is improved.

The application discloses a connector, an adapter and a quick-plug optical fiber connecting assembly, and relates to the field of optical distribution networks.The connector comprises a plug body, the plug body comprising a plug main body provided with a first cavity, a plug core fixing part and a threaded connecting part, the plug core fixing part and the threaded connecting part being respectively arranged at two ends of the plug main body and being integrally arranged with the plug main body, and the plug core fixing part being provided with an optical fiber ceramic plug core; a plug middle tube arranged in the first cavity; and a plug tail tube screwed to the threaded connecting part and abutting the plug middle tube between the plug tail tube and the optical fiber ceramic plug core.The optical fiber connecting assembly can conveniently and quickly complete the plug operation of the adapter and the connector, the locking force is reliable, and the problems of inconvenient plug operation and insufficient locking force of the existing optical fiber connecting assembly are effectively solved.

The utility model relates to a pulling device which comprises a machine table and a pulling mechanism arranged on the machine table, the pulling mechanism comprises a first driving part and a pulling assembly, the pulling assembly comprises a connecting base, a second driving part and a lining plate, and the second driving part and the lining plate are arranged on the connecting base and are arranged at intervals in the vertical direction; a clamping piece is arranged at one end of the second driving piece, and the second driving piece is used for driving the clamping piece to be close to the lining plate so that the clamping piece can fix the sheet-shaped workpiece to the lining plate, or driving the clamping piece to be away from the lining plate so that the sheet-shaped workpiece can be released; the first driving piece is used for driving the pulling assembly to move when the clamping piece fixes the sheet-shaped workpiece on the lining plate, so that the sheet-shaped workpiece can be stably pulled out; and when the clamping piece releases the sheet-shaped workpiece, the sheet-shaped workpiece can fall to a designated position under the action of gravity, so that the problem that the sheet-shaped workpiece is scattered around and is difficult to collect due to the fact that the sheet-shaped workpiece is hard ejected by an air cylinder in the prior art is solved, and the production efficiency is improved.

The utility model discloses a crucible mould which is used for knotting a crucible of an intermediate frequency furnace, the crucible mould comprises a cylinder body, a plurality of reinforcing assemblies and a plurality of stress assemblies, the cylinder body is coaxially arranged in the intermediate frequency furnace and used for knotting the crucible, the reinforcing assemblies are arranged on the inner wall of the cylinder body at intervals in the axial direction of the cylinder body, and the stress assemblies are arranged on the inner wall of the cylinder body. The multiple stress pieces are installed on the top of the barrel and arranged in the circumferential direction of the barrel at intervals. According to the crucible, the barrel is matched with the reinforcing assemblies and the stress pieces, the reinforcing assemblies are arranged on the inner wall of the barrel at intervals, so that the structural strength is enhanced, the overall rigidity and corrosion resistance of the crucible are effectively improved, and the crucible is more stable and durable in the high-temperature environment; the crucible mold can be pulled out stably, local stress concentration is reduced, local damage to a crucible is avoided, safety is improved, the service life is prolonged, the knotting efficiency and quality of the crucible are improved, and trouble and labor are saved.

The invention relates to the technical field of connectors, and discloses a terminal hardness and plugging force adjusting method. The terminal hardness and insertion and extraction force adjusting method comprises the following steps: step 1, calculating an adjusted theoretical insertion and extraction force according to a theoretical hardness value under the condition that a terminal material is not changed; 2, changing the hardness of the terminal, and carrying out a terminal insertion and extraction force test to enable the actual insertion and extraction force to be close to the adjusted theoretical insertion and extraction force; if the difference between the actual insertion and extraction force and the adjusted theoretical insertion and extraction force is greater than or equal to a preset threshold value, repeating the step 2; if the difference between the actual insertion and extraction force and the adjusted theoretical insertion and extraction force is smaller than a preset threshold value, insertion and extraction force adjustment is stopped, and the mapping relation between the current actual hardness and the actual insertion and extraction force is stored. The invention provides a terminal hardness and plugging force adjusting method, which comprises the following steps of: calculating adjusted theoretical plugging force according to a theoretical hardness value, and then changing the hardness of a terminal and measuring actual plugging force, so that the actual plugging force is infinitely close to the integrated theoretical plugging force to obtain the optimal plugging force suitable for the terminal. And the terminal is smoothly inserted and pulled out and is not easy to fall off at the same time. After the mapping relation between the current actual hardness and the actual insertion and extraction force is stored, the mapping between the current actual hardness and the actual insertion and extraction force can be utilized to indicate the batch production of the terminal.

The utility model discloses a splicing type data line with stable connection, which comprises a splicing head and at least one splicing line, and is characterized in that the splicing head is provided with a body, and the body is provided with an interface; the splicing line is provided with a joint and is inserted into the interface through the joint to form a splicing type data line; a movable clamping cover is arranged on the body, and the clamping cover is of a groove-shaped structure matched with a joint of a splicing line; and after the splicing line is inserted into the interface of the body, the clamping cover is clamped from the side surface of the joint of the splicing line, so that the joint is clamped, and a splicing fixing structure of the splicing line and the splicing joint is formed. According to the splicing head, the movable clamping cover is arranged on the splicing head body, the spliced line body can be clamped or loosened by rotating the clamping cover, so that the splicing line can be kept in a stable butt joint state or can be pulled out, and compared with an existing splicing line fixing mechanism, the splicing head is simpler in structure, more convenient to operate and use, smaller in size and more convenient to use. And the loss is avoided.

The utility model discloses a water pressure test device not easy to wear, which comprises a drilling machine, and a drill rod of the drilling machine is forwards connected with a double-end plug water plugging device; the double-end plug water plugging device comprises an inner pipe, a rear water stopping plug and a front water stopping plug are installed on the inner pipe in a front-back spaced mode, the front water stopping plug comprises a front capsule, and the rear water stopping plug comprises a rear capsule. The inner pipe forwards extends out of the front water stop plug, backwards extends out of the rear water stop plug and is connected with a drill rod; the inner tube between the front capsule and the rear capsule is of a floral tube structure, and the floral tube structure is used for injecting water into the water pressure test section of the drill hole; a rear supporting structure used for supporting the rear end of the double-end plug water plugging device is arranged at the front end of the drill rod, and a front supporting structure used for supporting the front end of the double-end plug water plugging device is arranged at the front end of the inner pipe. The rear supporting structure and the front supporting structure are symmetrically arranged; the rear supporting structure and the front supporting structure are both connected with the hole wall of the drill hole in a pressing mode through rollers. The double-end embolism water plugging device is supported on the front side and the rear side through the front supporting structure and the rear supporting structure, the double-end embolism water plugging device, the front capsule and the rear capsule are suspended in a drill hole, when the double-end embolism water plugging device is pushed in or pulled out of the drill hole, the front capsule and the rear capsule do not make contact with the wall of the drill hole generally, and even if the front capsule and the rear capsule make contact with each other, contact stress is small; therefore, the abrasion of the capsule when the long drill hole is pushed forwards or pulled out is greatly reduced, the service life of the capsule is prolonged, and the test cost is reduced.

The application discloses a matching structure of a quick plug-in connector and relates to the technical field of aviation connectors, which comprises a connector plug and a connector socket, characterized in that the matching structure further comprises a coupling jack assembly installed in the connector plug, the coupling jack assembly comprises a front-end jack and a rear-end jack, the front-end jack is in a conical barrel type structure, the diameter of the front-end jack gradually decreases from an inlet end to an outlet end, a plurality of first notches are formed in the side wall of the outlet end of the front-end jack, the inlet end of the rear-end jack is in a conical barrel type structure, the diameter of the rear-end jack gradually increases from the inlet end to the other end, and a plurality of second notches are formed in the side wall of the inlet end of the rear-end jack. The application solves the problem that the existing aviation jack design is unreasonable, the aviation jack and the plug pin are easy to collide with each other when being coupled, damage is caused, and the automatic equipment is affected.

The utility model discloses an anti-floating anchor rod for constructional engineering, which relates to the technical field of constructional engineering and comprises an anchor rod reinforcing steel bar, a placing head is fixedly mounted on the outer wall of the bottom end of the anchor rod reinforcing steel bar, a positioning disc is arranged on the outer wall above the anchor rod reinforcing steel bar in a penetrating manner, and a reinforcing steel bar penetrating hole is formed in the outer wall of the middle end of the positioning disc in a penetrating manner; a wear-resisting layer is fixedly mounted on the inner wall of the steel bar penetrating hole, the outer wall of the wear-resisting layer is in lap joint with the outer wall of the anchor rod steel bar, and a positioning ring is fixedly mounted on the outer wall of the bottom of the positioning disc. The anchor rod reinforcing steel bar penetrates through the positioning disc through the reinforcing steel bar penetrating hole, then the placing head at the bottom end of the lower portion is put into a hole drilled in advance, then the positioning ring at the bottom of the positioning disc is clamped into the hole, the positioning disc is firmly fixed to the ground through the conical nails, and then the anchor rod reinforcing steel bar continuously moves downwards till the anchor rod reinforcing steel bar reaches the bottom. And the effects that the anchor rod reinforcing steel bars are always kept in the center position before grouting, and deviation is prevented are achieved.

The invention discloses a silty-sand stratum hole grouting device and process, and mainly relates to the field of silty-sand geological grouting. Comprising a steel sheet pile, a grouting unit connected with the steel sheet pile, a stress head arranged at the bottom of the steel sheet pile and a control system. A transverse partition plate is arranged in the steel sheet pile, a grouting cavity is formed between the transverse partition plate and the stress head, an elastic connecting assembly is arranged on the transverse partition plate, the elastic connecting assembly comprises a displacement sensor and a pressure sensor which are arranged in the grouting cavity, and the elastic connecting assembly is used for connecting the stress head and the bottom of the steel sheet pile. And the two are connected in a limited elastic state. The grouting device has the beneficial effects that the grouting device is used for grouting in the pulling-out process of the steel sheet pile under the silt geological condition, the process of grouting while pile pulling is achieved, in the pile pulling process, the geological condition occurring in a pile body hole after the steel sheet pile is pulled out is judged according to the displacement value of the stress head and the pressure value in the grouting cavity, and the grouting efficiency is improved. And the grouting scheme and the pulling-out speed of the steel sheet pile are adjusted in time.

The invention relates to the technical field of network testing, and particularly discloses a network security testing device and method.The network security testing device comprises a protection box and a network detector body, the network detector body is movably installed in the protection box, and two first open grooves are formed in the top of the protection box in a penetrating mode; and a first movable door is movably mounted in the first open groove. According to the network detector, a second movable plate, a fan and a spring telescopic rod are arranged, the fan is started to blow air downwards, air blown out of the fan is blown to the top of the network detector body, cooling of the network detector body can be achieved, heat generated by the network detector body can be transmitted to the second movable plate through a movable base, and the heat generated by the network detector body can be dissipated. Due to the fact that cooling liquid is injected into the cooling groove, heat transmitted to the second movable plate can be absorbed by the cooling liquid, further cooling of the network detector body is completed, and air blown out by the fan is discharged from a second open groove after being blocked by the second movable plate.

The cutter is applied to the field of cutters and comprises a mounting frame and a cutting unit, a fixing seat is arranged on the mounting frame, a sliding hole is formed in the fixing seat, a mounting sleeve is slidably connected into the sliding hole, a connecting piece is arranged on the inner edge of the mounting sleeve, the cutting unit is arranged on the connecting piece, and a quick-release groove is formed in the hole wall of the sliding hole. A placement groove is formed in the mounting sleeve, and a ball is arranged in the placement groove; and when the mounting sleeve slides along the sliding hole, the ball moves between the quick release groove and the sliding hole. The material cutting unit has the technical effects that when the material cutting unit needs to be disassembled, the mounting sleeve moves downwards along the sliding hole to drive the ball located at the sliding hole to move to the quick disassembling groove, the ball loosens limiting on the connecting piece, the connecting piece can be smoothly pulled out from the inner edge of the mounting sleeve, and quick disassembling and replacing of the material cutting unit are achieved; operators do not need to disassemble and assemble external tools, operation is easy and convenient, the tool replacement efficiency is improved, and therefore the production efficiency of machining equipment is improved.

The application discloses a linkage type injection molding insert ejection mechanism, which comprises a rack, a supporting seat for supporting injection molded parts is arranged at the top of the rack, and at least two pressing assemblies for pressing the injection molded parts are arranged on both sides of the supporting seat; at least one limiting seat is detachably arranged on the supporting seat, each limiting seat corresponds to two inserts, and a rectangular hole for the inserts to pass through is formed in the limiting seat; two first and second follow-up ejection assemblies for respectively ejecting corresponding inserts are arranged below the supporting seat, a first ejection assembly matched with the first follow-up ejection assembly is arranged at one end of the supporting seat, and a second ejection assembly matched with the second follow-up ejection assembly is arranged below the supporting seat. The application also discloses an injection molded product marking device. The ejection assembly and the follow-up ejection assembly are synchronously matched, a pushing and pulling resultant force is formed, the inserts are uniformly stressed, and the inserts are smoothly pulled out.

The invention relates to an automatic core mold removing device and method, a positioning adjusting mechanism is provided with an angle adjusting plate for adjusting the angle through the telescopic action of a plurality of telescopic adjusting devices, the angle adjusting plate is provided with a product fixing support and a core ejecting mechanism, the core ejecting mechanism is provided with a lifting jacking plate, and the lifting jacking plate is provided with a lifting device. The jacking plate and the product fixing support are arranged in a cross shape, the jacking plate is provided with two jacking columns, the two jacking columns are arranged on the two sides of the product fixing support respectively, the lower end of a product is fixed to the product fixing support, and the positioning adjusting mechanism is driven by the transfer mechanism to move to the position below the core pulling mechanism. The core pulling mechanism is provided with a Z-direction lifting column capable of ascending and descending, and the lower end of the Z-direction lifting column is connected with a self-locking grabbing hook at the upper end of a grabbing product through a six-dimensional force sensor. According to the invention, the automatic vertical demolding operation of the product core mold can be realized, and the conditions of blockage or product damage and the like are avoided while the core mold is ensured to be smoothly pulled out.

The utility model belongs to the technical field of oral cavity expansion, and particularly provides an oral cavity expander for the department of stomatology, which comprises a lower support frame and an upper support frame, the upper support frame is rotatably arranged on the lower support frame, a lock cylinder part is arranged on the upper wall of the lower support frame, and a key part is arranged on the inner side wall of the upper support frame. Switching of the locking state is achieved through the rotation effect generated by guiding of the inclined groove, the oral cavity expanding device is restored through the magnetic force effect, and therefore the occlusion locking effect and the occlusion unlocking effect are achieved, expanding of the oral cavity of a patient and retracting of the oral cavity expanding device do not need to be operated by medical staff at all, and the operation is simple and convenient. All the functions can be achieved only by the pure occlusion action of a patient on the oral cavity expander, the oral cavity expanding efficiency is remarkably improved, the operation difficulty of medical staff is reduced, the expanding process is elastic expanding, and the comfort of the patient can be better improved.

The utility model relates to the field of connectors, in particular to a battery connector convenient to plug and unplug, which comprises a male end joint and a female end joint, the male end joint can be plugged with the female end joint in a matching way, the female end joint comprises a shell and a conductive elastic sheet, a wiring cavity is arranged in the shell, and two ends of the shell are respectively provided with a wiring opening and a plug port. The conductive elastic piece is installed in the wiring cavity through the insulating retainer and comprises a positioning base body, the two ends of the positioning base body are bent to form side plates, clamping conductive plates are arranged at the ends, close to the plugging port, of the side plates, the two clamping conductive plates are symmetrical to each other, and the second clamping part and the first clamping part are arranged front and back in the plugging direction. When an inserting piece of the male end connector is inserted, the inserting piece firstly makes contact with the first clamping part to generate first-stage clamping force, after the inserting piece continues to be inserted, the inserting piece makes contact with the second clamping part to generate second-stage clamping force, and the clamping force of the second clamping part and the first clamping part on the inserting piece needs to be overcome at the same time when the inserting piece is pulled out. And the mechanical characteristics of convenient insertion and stable extraction are formed.

This invention discloses an improved pluggable connector, including a plug and a socket. One end of the plug can be inserted into the socket's opening to achieve electrical connection. A first latch is provided on the side wall of the socket's opening, and a second latch is provided on the outer side wall of one end of the plug. The first and second latches can be engaged. The plug or socket also has a separation device that can separate and disengage the first and second latches. This invention prevents the plug and socket from loosening when subjected to vibration or external impact, avoiding poor contact or even open circuits. When the plug is pulled out of the socket, simply operating the separation device can disengage the first and second latches, allowing the plug to be easily pulled out of the socket and preventing situations where it cannot be pulled out. This invention has a novel design and ensures the stability of the pluggable connector in use.

The application relates to the technical field of support cylinders, and relates to a reinforcing device for a cast-in-place pile, which comprises a plurality of spliced support cylinder assemblies, a top protection assembly is detachably arranged at the top of the topmost support cylinder assembly, and a fastening assembly is arranged on the top protection assembly. The support cylinder is designed in two layers, i.e. an inner layer and an outer layer. The inner layer is designed to be perpendicular to the horizontal plane by 90 degrees, and the outer layer is designed to be a taper with a small upper end and a large lower end. Vertical reinforcing ribs and annular reinforcing ribs are arranged between the two layers, so that the overall structural strength of the support cylinder is improved. The taper design is characterized by a small end section area, and the earth penetration resistance is obviously smaller than that of a straight cylinder. The support cylinder is more smooth to pull out, and is not prone to soil carrying and hole collapse. The quick detachable mounting mechanism is arranged, so that the support cylinders can be quickly mounted and detached. Compared with the traditional mounting and detaching mode, the efficiency is higher.

According to the plug bush structure applied to the socket copper sheet, one side, far away from the terminal connecting end, of the cambered surface part is obliquely arranged towards one side, far away from the terminal connecting end, of the plane part, so that a plug can form good elastic contact with the cambered surface part after being inserted into a slot, and the stability and the conductivity of plugging are improved. In addition, the inclined design is beneficial to smooth sliding of the plug in the plugging and unplugging process, the plugging and unplugging resistance is reduced, and the service life of the socket is prolonged. Meanwhile, the surface contact between the plane part and the plug ensures the stability of current transmission, and the point contact or line contact between the cambered surface part and the plug provides additional elastic support, so that the whole plugging structure is more reliable. Moreover, through the design of the plug bush structure, the contact area can be reduced in the process of inserting the plug, the plug is prevented from deviating or being blocked in the inserting process, the plug can be smoothly pulled out of the slot in the process of pulling out the plug, and the convenience of the plugging operation and the plugging hand feeling of the plug are improved.

The utility model is suitable for the field of ground anchor dismantling, provides a ground anchor dismantling device for smart grid, including support piece, adjusting part, clamping piece and jacks, the support piece includes support cylinder, the adjusting part includes operating lever, operating lever rotation is connected in support cylinder, operating lever outer thread has first threaded cylinder, the bottom of first threaded cylinder is connected with movable plate, the lower surface of movable plate is connected with fixed support, in the utility model, convenient and efficient, through the rotation operating block, can easily drive the clamp sleeve of bolt type expansion ground anchor to carry out quick clamping and fixing, compared with traditional manual fixing mode, greatly shorten the preparation time, rotation operating lever can realize the steady pull -out of ground anchor sleeve, need not many people cooperation and complex operation, significantly improve the dismantling efficiency, reduce the manpower.

The utility model provides an intra-operative C-arm machine assisted insertion into a nasal duodenum tube in a fully minimally invasive esophageal cancer radical operation. The intra-operative C-arm machine assisted insertion into the nasal duodenum tube comprises a nutrient solution input tube, according to the in-operation C-arm machine assisted placement of the nasal duodenal tube in the full minimally invasive esophageal cancer radical operation, the rotating ring, the first air bag and the second air bag are used in cooperation, the C-arm machine assisted placement of the nasal duodenal tube can be fixed while being guided into a nutrient solution input tube, meanwhile, the nutrient solution input tube is placed below the descending part of the duodenum, and then a guide wire is pulled out of the nutrient tube; the nutrient solution input pipe is positioned and fixed through the rotating ring, the first air bag and the second air bag, the situation that the nutrient solution input pipe is pulled in the guide wire pulling-out process is avoided, medical staff can pull out the guide wire more stably, and meanwhile the situation that the nutrient solution input pipe is damaged in the use process is also avoided. As the patient shakes after being awakened, the intubation tube is vibrated, and the patient is injured, the success rate of implanting the nasal duodenal tube can be effectively improved, and the nasal duodenal tube has the advantages of high success rate, simplicity in operation and the like.

The one-handed needle core extraction and negative pressure suction device for puncture biopsy comprises a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component. The partition divides the space in the tube body into a piston rod insertion hole and a piston driving rod insertion hole. The puncture needle is installed on the needle connecting tube. The piston rod comprises piston rod teeth, the piston driving rod comprises piston driving rod teeth, the piston rod is provided with a piston rod needle core insertion hole, the rubber piston sleeve is provided with a rubber piston sleeve needle core insertion hole, the tube body is provided with a tube body needle core insertion hole and a tube body needle core threaded hole, the tube body needle core threaded hole is provided with a tube body needle core fixing screw, and the piston rod is provided with a needle core guide wheel device, so that the puncture needle can be lifted and inserted and the puncture needle core can be extracted while performing negative pressure suction.