482results about How to "Easy to open" patented technology

The utility model discloses a side sliding door structure of a European style box-type substation, which belongs to the field of European style box-type substations, and comprises a European style box body and a box door, the top end of the European style box body is fixedly connected with a box top, the bottom end of the box top is fixedly connected with a sliding chute, the sliding chute is arranged in a U shape, and the sliding chute is positioned on the outer side of the top end of the European style box body. The number of the box doors is two, the top ends of the sides, close to each other, of the box doors are movably connected with sliding wheels, the sliding wheels are slidably connected into the sliding grooves, the center of the rear end of the European-style box body is movably connected with a deformable folding mechanism, rectangular grooves are formed in the two sides of the European-style box body, and the interiors of the rectangular grooves are fixedly connected with bouncing reset mechanisms. According to the scheme, sliding opening of the box door towards the two sides is facilitated, the situation that power transformation equipment is prevented from moving into the European box body after the transmission hinge double door is opened towards the two sides is avoided, the forward extension space of the box door is reduced, and the convenience of later maintenance and detection of the European box-type substation is improved.

The utility model provides an auxiliary device for sleeving a casing into a filling pipe, which comprises a curled film main body, the film main body is curled in a natural state to form a C-shaped tubular structure with a longitudinal opening, and horn mouth parts are arranged at two ends of the film main body. By arranging the curled film main body and utilizing the C-shaped tubular structure formed in the natural state, when the auxiliary device is sleeved into the filling pipe, the tubular film main body can form a temporary isolation layer between the casing and the filling pipe. And the chance that the casing is in direct contact with the port or the pipe wall of the filling pipe is reduced, so that the risk that the casing is damaged due to direct scratching is reduced, and the casing is protected. And the horn mouth parts arranged at the two ends of the film main body provide effective guidance for sleeving the auxiliary device into the filling pipe and subsequently sleeving the casing into the auxiliary device. Therefore, an operator can more easily align and place the auxiliary device at the port of the filling pipe, the alignment operation is simplified, and the smoothness of the sleeving process is improved.

The glass annealing furnace self-closing fan observation window structure provided by the utility model is convenient to open or close, can facilitate staff to observe the environment in the furnace in real time, can avoid local heat leakage, can avoid the influence of opening the observation window on the temperature stability in the furnace, can avoid scalding the staff, is favorable for improving the safety, and makes the glass annealing furnace self-closing fan observation window structure convenient to open or close, can facilitate staff to observe the environment in the furnace in real time, can avoid local heat leakage, can avoid the influence of opening the observation window on the temperature stability in the furnace, can avoid scalding the staff, is favorable for improving the safety.

The utility model relates to the field of dried fruit sorting discloses a dried fruit production sorting device, including the organism, the inner wall lower part rear end of organism is provided with the sheltering subassembly, the inner wall lower part of organism is provided with cleaning subassembly, the cleaning subassembly includes the fixed plate, the fixed plate sets up for multiple groups, multiple groups the outer wall fixed connection of fixed plate is in the inner wall lower part of organism, the opposite side fixed connection of adjacent two groups fixed plate has the discharge plate, the inner wall sliding connection of fixed plate has the support block. In the utility model, through cleaning subassembly, when the operator uses the machine to sort dried fruit, dried fruit will fall on the ash screen plate, and when the dried fruit hits the ash screen plate, the ash screen plate and the return spring cooperate with each other, and then the ash screen plate repeatedly shakes up and down, and the dust is shaken to the discharge plate below, so that the device can clean the dust during the screening process, and prevent the dust from being reabsorbed on the dried fruit in the finished product box.

An electric appliance cavity and a light source cavity which are independent of each other are arranged on a lamp body, an electric appliance cavity rear cover is hinged to one end of the lamp body, a light source cavity rear cover is hinged to the other end of the lamp body, the electric appliance cavity rear cover and the light source cavity rear cover are opened oppositely, and the electric appliance cavity rear cover is pressed on the light source cavity rear cover in a covering mode. A hasp is arranged on the electric appliance cavity rear cover and can be fixed in a hasp groove of the lamp body, and one end of the electric appliance cavity rear cover is pressed and covered on the light source cavity rear cover. The interior of the lamp body is divided into the electric appliance cavity and the light source cavity which are independent from each other, the electric appliance cavity rear cover and the light source cavity rear cover are hinged to the electric appliance cavity and the light source cavity respectively, operation is easy during installation and maintenance, and meanwhile the use requirements that the electric appliance cavity needs to be sealed and the light source cavity needs to be ventilated can be met. In addition, the two rear covers are opened in a linkage mode, the electric appliance cavity rear cover is pressed on the light source cavity rear cover in a covering mode, on one hand, opening is more convenient, and on the other hand, operation safety is greatly improved.

This utility model discloses a stainless steel storage tank with good sealing performance for chemical production, including a tank body. A sealing cover is provided on the top of the tank body for sealing. A driving pressing assembly is provided on the surface of the tank body. The driving pressing assembly is used to drive and press down the sealing cover, improving the sealing performance between the sealing cover and the tank body. A connecting rotating assembly is provided on the sealing cover. This utility model achieves automated pressing and releasing of the sealing cover through the driving pressing assembly, replacing the traditional one-by-one bolt tightening operation. The sealing ring at the bottom of the sealing cover, together with the annular positioning block and annular positioning groove at the top of the tank body, form a triple sealing structure. The annular positioning block is embedded in the annular positioning groove for precise positioning, preventing the sealing cover from shifting. The pressing plate applies uniform pressure through the driving pressing assembly, ensuring a tight fit between the sealing ring and the upper edge of the tank body, eliminating local gaps.

This utility model discloses a hole-opening device for a double-sided aluminum substrate, applied in the field of hole-opening device technology. It includes a base plate, a support plate fixedly connected to the bottom of a hydraulic cylinder, a hole-opening assembly at the bottom of the support plate, a placement plate slidably connected to the top of the base plate, a clamping assembly at the top of the placement plate, a connecting plate welded to the rear side of the support, a drive gear fixedly connected to the output end of a second motor, and two rotating rods rotatably connected to the front side of the vertical surface of the connecting plate via bearings. Each of the two rotating rods has a driven gear meshing with the drive gear on its surface, and a fan fixedly connected to the other end of each of the two rotating rods. This utility model, by incorporating a second motor, drive gear, rotating rods, driven gear, and fan, can reduce the temperature of the hole-opening head during the hole-opening process, thereby reducing deformation of the double-sided aluminum substrate or aging of the insulation layer, and extending the service life of the double-sided aluminum substrate.

The utility model relates to a kind of safety protection door matched with maintenance vehicle guide discharge chute, and the front part of traction chassis is equipped with mixing box, the left lower part of mixing box is equipped with discharge chute, the left part of discharge chute is hinged guide groove, left side plate is equipped in the left side of mixing box, and rectangular through-hole is opened in the lower part of left side plate;Door panel is placed in the rectangular through-hole opened in the left side plate, racket-shaped through-hole is opened in the lower part of door panel, tool lock is equipped in the racket-shaped through-hole opened in the door panel, and handle is hinged in the left part of door panel.The utility model has beneficial effects: it is convenient to open and close door panel.

The utility model discloses a kind of HDPE cable protection sleeve for cable protection, it is related to cable protection technical field, including pipe body, pipe body two ends are fixedly connected with left connecting block, right connecting block, the pipe body includes the upper pipeline of each other clamping, lower pipeline;The left connecting block includes the left upper connecting body of each other clamping, left lower connecting body;The right connecting block includes the right upper connecting block of each other clamping, right lower connecting block;Lower pipeline two ends are fixedly connected with left lower connecting body, right lower connecting block respectively;The two ends of lower pipeline are fixedly connected with left upper connecting body, right upper connecting block respectively, recess is set up on the left upper connecting body, left lower connecting body, the protruding block matched with the recess is fixedly arranged on the right upper connecting block, right lower connecting block, solve the connecting place without overhaul window in prior art, when needing to repair certain section of pipeline, need to dismantle pipeline in whole section, the practicability of device is affected.

The utility model discloses an electric servo control universal testing machine which comprises a base, a pressure detection table is arranged in the base, a supporting plate is arranged in the side direction of the base, and supporting frames are arranged at the two ends of the supporting plate. A downward pressing push plate is arranged on the inner side wall of the supporting plate, a first sliding rail and a second sliding rail are arranged on the side wall of the supporting frame from inside to outside, a first protection frame is arranged on the first sliding rail in a sliding mode, and a second protection frame is arranged on the second sliding rail in a sliding mode; the first protection frame and the second protection frame are arranged, and the sliding stroke of the second protection frame is higher than that of the first protection frame, so that scrap splashing caused by material crushing in the test process is effectively prevented. By means of the double-layer protection design, the risk of injury to surrounding equipment and workers can be greatly reduced, and the safety of the test process is improved. Splashed chippings have large kinetic energy and are prone to damaging a testing machine and other peripheral equipment.

The utility model provides a toy doll, which belongs to the technical field of toys and comprises a toy body and a locking component. The toy body is composed of a trunk, and the top of the trunk is connected with a head. The toy body is composed of the trunk, the top of the trunk is connected with the head, the two sides of the trunk are connected with the arms, the bottom of the trunk is connected with the legs to form a basic structure of the toy, the installation box is installed in the middle of the surface of the trunk, and the doll is placed in the installation box, so that the toy body and the doll are combined and matched. The doll is covered by the transparent cover plate on the surface of the mounting box after being placed in the mounting box, so that the doll in the mounting box can be seen through the transparent cover plate, and compared with a single toy in the current market, the toy has the advantages that other dolls can be placed in the mounting box for matching, the design novelty is enhanced, and the practicability is high. Therefore, playability and interestingness of the toy are improved.

The utility model discloses a dissolving device for soil detection, which belongs to the technical field of soil detection, and comprises a mounting shell and a heat dissipation net, the side wall of the mounting shell is fixedly connected with the heat dissipation net, a rotating assembly is arranged in the mounting shell, a lubricating assembly is arranged in the mounting shell, the rotating assembly comprises a motor, and the motor is connected with the lubricating assembly. An output shaft of the motor is fixedly connected with a cooling fan, the top end of the cooling fan is fixedly connected with a rotating table, and a fixing hole is formed in the top of the rotating table; according to the soil dissolving device disclosed by the utility model, through the arrangement of the rotating assembly, the design, the use of the rotating table, the dissolving bottle and the motor, various types of soil can be dissolved, and the dissolving efficiency when the various types of soil need to be detected is improved, so that the detection efficiency is improved; and the motor is cooled by cold air exhausted by the cooling fan and the refrigeration pipe, so that the temperature of the motor is prevented from rising and the service life is not influenced.

A tool integrated cabinet for rail transit vehicles includes a shell, a pullable support frame, a damping universal roller and a folding seat storage cabin. The support frame is linearly guided through the sliding cooperation of a T-shaped guide rail and a clamping block. The stability of the support frame in a vehicle vibration environment is improved by the antiskid rubber material and damping design of the roller. The inside of the support frame adopts a modular partition structure. A fire extinguisher is fixed through the placement grooves of first and second support plates. The bottom plate cooperates with a guide groove to realize the quick taking and placing of an escape ladder. A groove is internally provided with a slide rail type folding seat storage cabin. The folding seat storage cabin is linked with a storage guide plate through a handle passage to realize the vertical partition management of emergency equipment and auxiliary tools. In addition, the conical self-locking structure and spring elastic pre-tightening mechanism of the plug rod and plug plate can effectively prevent the accidental sliding of the support frame. The combination innovation of the T-shaped guide rail, damping roller and folding cabin integration significantly enhances the safety and convenience of rail transit emergency equipment management.

The utility model provides a layered sampling device of food detection belongs to food detection technical field, including base, telescopic link and screw rod, the top fixed mounting of base has the mounting rod, the outside slide mounting of mounting rod has the slide cover, the side swing mounting of slide cover has the slide cover, the inside slide mounting of slide cover has the sampling cover, the outside limit mounting of sampling cover has the arc ring. The utility model discloses through placing the food to be sampled on the top of base, can make screw rod synchronous rotation through rotating the rotary disc, can make the screw thread direction of screw thread cover and screw rod adjust, can make mounting plate move at the bottom of base, can make connecting rod slide along the inside of movable slot in the process of mounting plate movement, can make clamping plate conveniently limit and fix the food to be sampled, and slide along the outside of mounting rod through slide cover simultaneously.

The utility model discloses a soil sampling device for agricultural technology popularization, and belongs to the technical field of soil sampling. Comprising a sampling barrel; the driving shaft is used for driving the sampling barrel to drill into soil, and one end of the driving shaft is detachably connected with the sampling barrel; the bearing plate is rotationally arranged at the other end of the driving shaft and used for supporting a power source of the driving shaft; the cleaning assembly is arranged in the sampling barrel and is driven by external force to move in the sampling barrel; the driving shaft is adopted to drive the sampling barrel to drill into the soil for sampling, the cleaning assembly is located in the sampling barrel and does not interfere with the sampling process in the sampling process, and after sampling is completed, the cleaning assembly can clean the interior of the sampling barrel, so that the problem that the sampling barrel is complex in internal structure and cannot be used for sampling is effectively solved. The sampling device solves the problems that the internal cleaning operation is troublesome and the working efficiency of a sampling site is reduced in the prior art, and further realizes the effect of quickly cleaning the residual soil on the inner wall of the sampling barrel in the sampling process.

The utility model discloses a kind of photo albums with video function, including cover, top plate, magnetic attraction piece, T type support pole, T type support foot, cover side is connected with bottom cover by cover spine, top plate is connected by folding portion between bottom cover, top plate top is equipped with mounting groove and is equipped with display screen in mounting groove, lithium battery and video storage chip are equipped in top plate, magnetic attraction piece is located in cover and top plate, photo album is innovatively integrated with display screen, not only can play the photo in video storage chip, can also play video, when user peruses photo album, not only can see familiar paper photo on inner page, can also review dynamic image moment through display screen, and photo album still retains the cover, bottom cover and inner page structure of traditional photo album, user can continue to place paper photo therein, give consideration to the emotional dependence of people to traditional photo album;While incorporating modern electronic technology, the display of dynamic image is realized, greatly enrich the use experience of viewer.

The utility model provides a corridor wall surface can turn over handrail mounting structure, corridor wall surface can turn over handrail mounting structure includes main handrail, turns over handrail and sleeve pipe. The utility model discloses be provided with main handrail, and main handrail is fixedly installed on the wall surface, and main handrail is disconnected state at the wall surface door board, thereby can open the door board conveniently. So that main handrail is divided into first section and second section, and the end of second section near first section is hingedly provided with turning over handrail, and the other end of turning over handrail is slidably provided with sleeve pipe, when turning over handrail rotates to with first section coaxial, through pushing sleeve pipe to move to the outside, make sleeve pipe to be installed to the outside of first section, complete turning over handrail and the connection of first section, can make the continuous complete handrail of wall surface outside, make the old people in the walking process can always support on the handrail, avoid the old people when walking handrail to break or position unstable and cause the danger of falling down.

The utility model provides a motor home vehicle-mounted water tank water level real-time monitoring device. The motor home vehicle-mounted water tank water level real-time monitoring device comprises a water tank body. A water inlet pipe and a water outlet pipe are arranged on one side of the water tank body, a mounting frame is arranged on the water tank body close to the water outlet pipe, a first filter and a water pump are arranged on the mounting frame, an electromagnetic valve is arranged at the bottom end of the water pump, and the first filter and the electromagnetic valve are connected with the water inlet pipe and the water outlet pipe respectively. A mounting groove is further formed in the top end of the water tank body in a penetrating mode, an end cover is arranged in the mounting groove, a sleeve and a sensor are further arranged at the bottom end of the end cover, a guide rod is further arranged in the sleeve, the top end of the guide rod is fixedly connected with the bottom end of the end cover, and the guide rod is further movably sleeved with a floating block. The top end of the water tank body is provided with a mounting groove for embedding the end cover, and the sleeve and the guide rod are fixed at the bottom of the end cover. When the water level changes, the floating block moves along the rod, the end cover bottom sensor senses the position, converts the position into water level data and transmits the water level data to the control module for display, and water level monitoring is achieved.

The utility model discloses a 10-35kV energy storage and boost all-in-one machine, which comprises an energy storage module, a boost module and a control unit, a connecting mechanism is arranged between the energy storage module and the boost module, the connecting mechanism comprises a protection structure and a cooling assembly, a lead for connecting the energy storage module and the boost module passes through the protection structure, and the cooling assembly is connected with the control unit. The high temperature generated when the wire is electrified is reduced through the cooling assembly; the protection structure comprises an upper semicircular shell and a lower semicircular shell, and the upper semicircular shell is rotationally connected with the rear portion of the top of the lower semicircular shell. According to the 10-35kV energy storage and boosting all-in-one machine, the connecting mechanism is arranged between the energy storage module and the boosting module, so that a connected wire penetrates through the interior of the protection structure, the protection structure is convenient to open, wire arrangement is carried out, the temperature of the heated wire can be rapidly reduced through the cooling assembly, and the working efficiency is improved. And the condition of large loss caused by the wire temperature process is avoided.

The utility model discloses a road marking brushing device for road engineering, and relates to the technical field of on-site mark formation. A road marking brushing device for road engineering comprises a brushing cart, a material storage tank is fixedly installed at the top of the brushing cart, a discharging groove is fixedly connected to one side of the material storage tank and communicates with the interior of the material storage tank, a brushing adjusting structure is located on the brushing cart, and the discharging groove communicates with the interior of the material storage tank. The brushing adjusting structure comprises a brushing hopper, two limiting blocks, a sealing plate and a bolt, the brushing hopper is fixedly connected to one side of the brushing trolley, two discharging openings are formed in the bottom end of the brushing hopper, a limiting sliding groove is formed in the bottom of the brushing hopper, and through cooperation of the limiting blocks, the sealing plate, the bolt and the brushing hopper, the sealing plate can be fixed through the bolt, so that the brushing trolley is convenient to use. And therefore, one discharging opening can be conveniently sealed or opened by the sealing plate, adjustment can be conveniently carried out according to the painting number, and the convenience of adjustment of the painting head is further improved.

This utility model relates to a two-stage manhole cover for gas valve wells, comprising a cover body including a primary manhole cover and a secondary manhole cover. The primary manhole cover is horizontally positioned with a through hole in its center; the secondary manhole cover is horizontally positioned on top of the primary manhole cover and covers the through hole. The advantages of this utility model are its simple structure, reasonable design, and the modular design of the manhole cover, which facilitates operation. It solves the problem of high labor intensity when opening and closing gas valve wells, reduces the frequency of handling and moving heavy manhole covers, thereby protecting the worker's health and improving the efficiency of gas well inspection and daily operation.

The utility model discloses a steel-cored aluminum conductor energy-saving overhead insulated cable winding machine with a guiding function, which relates to the technical field of cable winding and comprises a rack, a winding component is mounted on the rack, a guiding component for guiding a cable is arranged on the front side of the winding component, a first motor is fixed on the left side surface of the rack, and a second motor is fixed on the right side surface of the rack. A side plate is fixed to the output end of the first motor, a winding roller is fixed to the right side face of the side plate, the first motor, the side plate and the winding roller form a winding assembly, the right side of the winding roller is connected with a baffle through a recycling assembly, the outer end of the lead screw is in threaded connection with a moving block, and the limiting rod is located above the moving block. And an ash removal assembly is mounted on the guide assembly. According to the steel-cored aluminum conductor energy-saving overhead insulated cable winding machine with the guiding function, a wound cable can be taken down conveniently, and dust is prevented from being attached to the cable again when dust is cleaned.

The utility model discloses a special tool for lifting a valve rod, and belongs to the technical field of valves. A special tool for lifting a valve rod comprises a flange plate installed on a valve body and further comprises an adjusting screw rod used for driving the valve rod to ascend and descend, an adjusting seat is arranged on the flange plate, the top of the flange plate is fixedly provided with an adjusting seat through a plurality of supporting plates, the adjusting screw rod is in threaded connection with the adjusting seat, and the other end of the adjusting screw rod is matched with the top of the valve rod through a connecting piece. When the adjusting screw rod is driven to rotate, the adjusting screw rod drives the valve rod to ascend and descend through the connecting piece. The flange plate is installed on the valve body, the adjusting screw rod is in threaded connection with the adjusting seat, the adjusting screw rod is driven to rotate towards the flange plate, the bottom of the adjusting screw rod abuts against the top of the valve rod, the valve rod can be pushed to move into the valve body, and when the adjusting screw rod is rotated reversely, the valve rod can be driven to ascend through the connecting piece; the valve rod is conveniently driven to move to open or close the valve, and the using effect is improved.

The multifunctional composite sputum scraping structure of the sputum suction pipe connecting seat comprises the sputum suction connecting seat, and the sputum suction connecting seat comprises a cleaning chamber, a sputum suction connecting end and a catheter connecting end; a blocking circular ring is arranged at the joint of the cleaning chamber and the catheter connecting end, a blocking valve is arranged at the joint of the cleaning chamber and the sputum suction connecting end, a sputum scraping part is arranged on the surface of the inner side wall of the blocking valve in a protruding mode and comprises a plurality of protruding blocks, and the protruding blocks are enlarged in the direction close to the center of the blocking valve. By arranging the blocking valve, the air tightness and the sealing performance of the cleaning chamber are improved, sputum adhered to the outer wall of the catheter is scraped off and retained in the cleaning chamber through the blocking circular ring and the sputum scraping part, and therefore the sputum is convenient to clean, and the protruding block is gradually enlarged in the direction close to the center of the blocking valve; therefore, most of the convex blocks can tightly abut against the outer wall of the catheter when the catheter passes through, the effect of scraping sputum on the surface of the catheter is enhanced, potential safety hazards of a patient are reduced, the sealing performance of the blocking valve can be enhanced, and the blocking valve is adaptive to catheters of different sizes.

The utility model discloses a bottom suspension type explosion venting window capable of exhausting smoke, relates to the technical field of building safety protection equipment, and aims to solve the technical problems that when an existing bottom suspension type explosion venting window is in an open state, a top hinged structure of the existing bottom suspension type explosion venting window is greatly influenced by wind pressure, and the existing bottom suspension type explosion venting window is easy to shake and even damage. A plurality of hinges are fixedly arranged on one side of the top of the frame, a turnover window plate is fixedly connected between the hinges, and fixing seats are fixedly arranged on the two side edges, close to the window plate, of the frame. And telescopic frames movably connected with the window plate are rotationally mounted on the side edges of the two fixed seats. The window plate stabilizing effect is improved through the unique design of the telescopic frames. The telescopic frame is composed of a fixed part and a movable telescopic part, the telescopic part can move conveniently through a movable groove formed in the side wall of the fixed part and sliding grooves formed in the upper side face and the lower side face, and the window has the advantages that the supporting strength is improved, and the position of the window plate is kept stable in the strong wind environment.

The utility model discloses a washing test machine for simulating washable ultraviolet-proof fabric, and particularly relates to the technical field of fabric detection, the washing test machine comprises a case, a partition plate is arranged in the case, a washing bin is arranged on one side of the partition plate, a machine bin is arranged on the other side of the partition plate, a containing assembly is mounted on the partition plate, and the containing assembly is arranged on the machine bin. A heating plate is arranged at the bottom end of the interior of the washing bin and connected with a heater arranged in the machine bin, a temperature sensor is installed in the middle of one side of the partition plate, a water level sensor is arranged above the temperature sensor, a water inlet is formed in the partition plate and connected with a water pump arranged in the machine bin, and a water outlet is formed in the water pump. A water drainage pipe is arranged at the bottom of the washing bin, supporting legs are installed at the bottom end of the machine box, an upper cover is hinged to the top end of the machine box, a lock catch is arranged between the upper cover and the machine box in a matched mode, and a sealing gasket is arranged at the connecting position of the upper cover and the top face of the washing bin. The water washing device has the advantages of being capable of improving the water washing effect, convenient to operate and observe, stable in water flow and capable of improving the detection efficiency.

The utility model discloses a tableted candy configuration device, which relates to the technical field of tableted candy production ingredients and comprises a bottom plate, a support frame is fixedly connected to the outer wall of the top of the bottom plate, a bearing seat is fixedly connected to the outer wall of the top of the support frame, and a fixing column is fixedly connected to the inner wall of the circumference of the bearing seat. A tank body is fixedly connected to the end, away from the bearing seat, of the fixing column, a driving assembly for driving the tank body to rotate is arranged at the top of the bottom plate, and a stirring assembly for improving the material mixing efficiency is arranged in the tank body. According to the utility model, various raw materials with different properties can be fully and uniformly mixed, so that the mixing effect of candy materials is effectively improved, the quality of subsequent tabletting and forming products is improved, and the problems of non-uniform taste, non-uniform color and the like are reduced.

The trocar comprises an upper connecting part and a needle part, the lower portion of the upper connecting part is connected with the needle part, the periphery of the lower end of the needle part is provided with a lower opening part used for opening a cannula, the left side face and the right side face of the tail end of the lower opening part are chamfered, and the left side face, the right side face and the bottom face form an inverted trapezoid. The trocar is characterized in that a lower distraction part is arranged on the periphery of the lower end of the trocar body, the width of the bottom face of the lower distraction part is smaller than the width of the middle of the lower distraction part, an upper distraction part is arranged on the periphery of the upper connecting part, the upper distraction part and the lower distraction part are separated, and the left side face and the right side face of the tail end of the upper distraction part are chamfered. The left side face, the right side face and the bottom face form an inverted trapezoid, passing sleeves can be expanded conveniently, the sleeve feeding mechanism is reasonable in structural design, the sleeves can be fed from bottom to top, the motor control accuracy is high, the feeding speed is high, and the production requirement is met.

The utility model provides a pathological section baking box, which belongs to the technical field of section baking boxes and comprises a box body, a plurality of supporting pieces and a plurality of inner hanging frames. A cavity is formed in the box body, the supporting pieces are arranged on the periphery of the inner wall of the cavity at intervals, and the inner hanging frames are supported on the supporting pieces in an up-down parallel mode and used for hanging a dyeing frame. The inner hanging frames comprise any one or more of at least one first inner hanging frame, at least one second inner hanging frame and at least one third inner hanging frame, and the inner hanging frames can be arranged in the cavity in an independent use mode or in a multi-combination mode so as to adapt to dyeing racks of different sizes and types. The utility model solves the technical problems that the dyeing effect, the pathological diagnosis accuracy and the like are influenced as the dyeing frame of the existing baking box is easy to topple, the temperature distribution is non-uniform and the baking efficiency is low.