73results about How to "Convenient card connection" patented technology

The utility model relates to the technical field of waste gas emission equipment for laboratories, in particular to concealed waste gas emission equipment for laboratories. According to the concealed waste gas emission equipment for the laboratory, the technical problem that an adsorption unit of a waste gas emission device for the laboratory in the prior art is inconvenient to replace is solved. The utility model discloses hidden waste gas emission equipment for a laboratory. The hidden waste gas emission equipment comprises an exhaust pipeline, the adsorption block is mounted on the filtering assembly; the fan is provided with an insertion column, the filter assembly is provided with an insertion cylinder, and the insertion column is matched with the insertion cylinder. And the adsorption block is mounted on the mounting disc of the insertion cylinder. When the adsorption block needs to be replaced, the filtering assembly can be conveniently pulled out of the exhaust pipeline, the position of the filtering assembly is positioned through the insertion column, and the adsorption block leaves the exhaust pipeline after the filtering assembly is pulled out, so that the adsorption block can be conveniently replaced, the filtering assembly is inserted back into the exhaust pipeline after replacement is completed, and the operation is very convenient.

The utility model discloses a main shaft box structure of turning center, the utility model relates to machining equipment technical field, its structure box, the top of box is connected with the box cover of rotation, the inside one side of box is connected with the drive shaft of rotation, the inside one side of box is connected with the main shaft body of rotation, the surface fixed connection of drive shaft has drive gear, the surface fixed practice level of main shaft body has the driven gear, drive gear and driven gear meshed connection, one end of main shaft body passes through the inner wall of box and extends to the front of box, the surface fixed connection of box has the bearing, and the inner wall of bearing is connected in the rotation of main shaft body, and the surface of box is provided with anti -icing mechanism. The main shaft box structure of turning center can prevent the condensation of lubricating oil between bearing and main shaft due to low air temperature, improve the lubricating effect of lubricating oil, and reduce the addition of lubricating oil, save the use amount of lubricating oil.

This utility model discloses a storage box assembly for a refrigerator, including a first box body with a first bottom wall and a first side wall; N second box bodies, each with a second bottom wall and a second side wall, the second bottom wall having a first limiting portion; the sum of the outer lengths of the N second box bodies is less than or equal to the inner length of the first box body, the outer width of the second box body is less than or equal to the inner width of the first box body, the outer length of the second box body is greater than the inner width of the first box body, and the length of the first limiting portion is less than or equal to the inner width of the first box body; in a first combination mode, the second box bodies are embedded in the first box body; in a second combination mode, the second box bodies are engaged with the opening end of the first box body through the first limiting portion. In the first combination mode, the second box bodies are embedded in the first box body, reducing the space occupied during transportation and lowering transportation costs; in the second combination mode, the second box bodies are engaged with the opening end of the first box body, facilitating adaptation to the internal space of the refrigerator and avoiding waste of internal space.

According to the technical scheme, the collecting and transporting garbage truck is characterized in that positioning frames and an anti-disengaging pad are arranged, the multiple positioning frames are matched with a clamping frame so that preliminary positioning can be conducted according to garbage cans of different height specifications, and the anti-disengaging pad can conduct positioning and disengaging prevention according to the garbage cans of different diameters during positioning; the garbage collection and transportation vehicle is used for solving the problem that the garbage collection and transportation vehicle is not stable enough when the garbage can is positioned and the garbage can is obliquely poured. By arranging the driving piece, the positioning frame can be conveniently clamped outside the garbage can or separated from the garbage can, and the positioning convenience of the collecting and transporting garbage truck is further improved; a cleaning brush is arranged, so that the garbage truck has the garbage cleaning effect in the transportation process, and the functionality of the garbage truck is improved; a hinge seat is arranged, so that the telescopic rod can be started to drive the movable frame to adjust more stably.

The utility model discloses building wall structure of reducing engineering cost belongs to building wall field. Building wall structure of reducing engineering cost, include: wall body still include: a plurality of slot, open in wall body's lower extreme, bottom plate, set up wall body's downside, a plurality of limit tube, fixedly set up on bottom plate, with slot correspond, the utility model discloses need not when installing wall body to correct hole to each reinforcing bar, can reduce manpower input to a certain extent, and then effectively reduce installation cost.

A frame lamp assembly easy to install comprises a frame lamp body, a keel frame and a power source device, one side of the frame lamp body is a light-emitting face, the other side of the frame lamp body is an installation face, the installation face is detachably installed on the keel frame, the keel frame at least comprises a vertical plate, the vertical plate is provided with an installation protruding strip, and the installation protruding strip is provided with a light-emitting face. The power supply device is at least provided with an elastic buckle matched with the installation protruding strip. The power supply device is installed on the installation protruding strip of the keel frame through the elastic buckle, installation and disassembly efficiency is improved, more convenience is achieved, screws are prevented from being exposed, the overall attractiveness of the frame lamp assembly is improved, the requirement of the elastic buckle for the installation space is small, and installation is convenient.

The utility model discloses a methanol fuel liquid level sensor, and belongs to the technical field of liquid level sensors, the methanol fuel liquid level sensor comprises an accommodating part and a liquid level detection part, the accommodating part comprises an oil tank main body, one end of the oil tank main body is provided with a communicating vessel assembly, and the liquid level detection part is arranged on the inner side of the communicating vessel assembly; the liquid level detection component comprises a sensor component arranged on the inner side of the communicating vessel component, a physical liquid level component is arranged outside the communicating vessel component, and the physical liquid level component is matched with the sensor component. Through the arrangement of the physical liquid level assembly, a liquid level observation and measurement structure with the physical property can be achieved in cooperation with the sensor assembly, the remaining situation of fuel in the fuel tank can be obtained through the structure when a sensor fails or is damaged, and practicability is improved.

The utility model discloses a novel automobile door decoration strip which comprises a strip body, one end of the strip body is provided with a side edge fixedly connected with the strip body, the end, away from the side edge, of the strip body is fixedly connected with two connecting blocks, each connecting block is provided with a through hole in a penetrating mode, each through hole is provided with a locking screw, and the locking screws are fixedly connected with the strip body. The strip body and the side edge are fixedly connected with an L-shaped deformation piece together, the strip body and the side edge are fixedly connected with a fixing plate together, and the strip body and the side edge are made of the same material and are sequentially provided with an attractive layer, a protective layer, a buffer layer and a base layer from outside to inside. The L-shaped deformation piece, the fixing plate and the two connecting blocks are matched, so that the decoration strip and the automobile door can be fixed, and the connecting stability of the decoration strip and the automobile door is guaranteed; the decorative strip is provided with the attractive layer, the protective layer, the buffer layer and the base layer, so that the functions of wear resistance, attractiveness and protection can be considered, and the practicability is high.

The utility model discloses a double-layer co-extrusion MPP pipe, which belongs to the technical field of MPP pipes, and comprises a mounting assembly and a connecting assembly, the mounting assembly comprises a mounting plate, an MPP mounting pipe is mounted on the inner wall of the mounting plate, the connecting assembly comprises a connecting plate, an MPP connecting pipe is mounted on the inner wall of the connecting plate, and the MPP connecting pipe is mounted on the inner wall of the connecting plate. Annular triangular plates are mounted on the outer surface of the MPP mounting pipe and the outer surface of the MPP connecting pipe, through the arrangement of a positioning pipe, a sealing ring, a positioning groove, a connecting groove, a fixing pipe and a sealing gasket, people can conveniently and rapidly clamp the MPP mounting pipe and the MPP connecting pipe, the sealing effect of the joint of the MPP mounting pipe and the MPP connecting pipe can be better, and the MPP connecting pipe can be conveniently connected with the MPP mounting pipe. The MPP mounting pipe and the MPP connecting pipe can be more stable in the working process due to the arrangement of the positioning holes and the positioning rods, and people can disassemble and assemble the MPP mounting pipe and the MPP connecting pipe due to the arrangement of the connecting blocks, the connecting holes, the connecting screws, the lug plates and the threaded holes.

The utility model relates to the technical field of screen corbel connection, in particular to a connecting structure of a screen and a corbel, which comprises a screen body, a corbel body, two bolts and a table top, the screen body is provided with a mounting groove, the corbel body is internally provided with a mounting cavity, the interior of the mounting cavity is slidably connected with a bending rod, and the bending rod is connected with the table top. A clamping groove used for being connected with the bent rod is formed in the upper inner wall of the mounting groove. A mounting plate is fixedly connected to the interior of the mounting cavity, a sliding rod is connected to the mounting plate in a sliding mode, an arc-shaped block is fixedly connected to one end of the sliding rod, a transverse strip is fixedly connected to the bending rod, and a plurality of mounting holes used for being connected with the bolts are formed in the upper inner wall and the lower inner wall of the mounting cavity. According to the utility model, the phenomenon that the table board falls off due to the loss of support can be effectively avoided, the stability of the table board is higher, the firmness of the connection between the screen body and the support arm body is better, and the connection between the screen body and the support arm body is facilitated.

The utility model relates to cleaning device technical field discloses cleaning device, including fuselage, heating structure, sewage tank and dust extraction structure. The accommodating cavity is established on the fuselage. The heating structure sets up in the accommodating cavity. The sewage tank is connected on the fuselage, and the side of sewage tank towards the accommodating cavity is spaced apart from the fuselage and is surrounded with the fuselage and forms first air outlet passage, and the second air outlet passage is further equipped in the sewage tank. The dust extraction structure sets up on the fuselage, and the first air outlet passage and the second air outlet passage are communicated. The cleaning device provided by the utility model, when the airflow passes through the first air outlet passage, can take away the heat generated by the heating structure, carries out the heat dissipation to the heating structure, improves the heat dissipation effect of cleaning device, and does not need to set up the additional heat dissipation component element for the heating structure.

The utility model discloses a gluing device for a special printing machine, which comprises a conveying pipeline for conveying paint, the discharge end of the conveying pipeline is fixedly connected with a stabilizing plate, the front and back surfaces of the conveying pipeline are fixedly connected with sliding blocks, the sliding blocks are connected with a protective cover in a sliding manner, the protective cover is clamped with a small clamping plate and a large clamping plate, and the small clamping plate and the large clamping plate are fixedly connected with the stabilizing plate. The lower surface of the small clamping plate is fixedly connected with an inserting rod, and the lower surface of the protection cover is connected with a gluing head in a clamped mode. Through the conveying pipeline, the stabilizing plate and the gluing heads, normal conveying of paint is facilitated, through the arrangement of the small clamping plate and the large clamping plate, the upper portion of the protection cover is protected conveniently, meanwhile, the conveying pipeline is limited, and through the arrangement of the two gluing heads below the protection cover, the gluing efficiency is improved. According to the gluing head for the special printing machine, the gluing head at the end of the conveying pipeline can be conveniently and rapidly replaced, meanwhile, the limiting ring arranged at the top of the gluing head can be conveniently connected with the protection cover in a clamped mode, and therefore the gluing head for the special printing machine has the rapid replacement effect.

The utility model discloses an engineering measuring device capable of preventing vibration offset, which comprises a mounting adjusting part, a support fixing frame, a fixing insertion rod and a theodolite, the bottom end of the mounting adjusting part is uniformly and fixedly connected with three rotating connecting blocks, the mounting adjusting part is in threaded connection with a fixing bolt, and the fixing bolt is fixedly connected with the support fixing frame. A supporting column is fixedly connected to the middle of the inner side of the top end of the mounting adjusting part, an inserting groove is formed in the middle of the supporting column, a movable inserting groove is formed in the side, located in the inserting groove, of the supporting column, a fixed arc plate is arranged on the inner side of the movable inserting groove, and a limiting circular ring is fixedly connected to the outer side of the fixed arc plate. Through the design of the damping rotating shaft and the fixed inserting rod, the device can provide high stability during measurement, the damping rotating shaft ensures that the supporting fixing frame can stably stay at a designated position after stopping rotating, the fixed inserting rod can firmly fix the device on the ground, and measurement deviation caused by vibration is prevented.

The utility model discloses a rail transit vehicle multi-axis vibration test clamp tool, and relates to the technical field of vehicle multi-axis vibration tests. The device comprises a vibration table. The driving assembly is pulled to compress the clamping assembly, so that clamping arrangement of the driving assembly is relieved, the driving assembly is rotated to drive the clamping assembly with one fixed end to move, when the clamping assembly moves, the clamping assembly can be attached to the inner side of the hub, and the hub can be clamped by the clamping assembly along with continuous movement of the clamping assembly. The hub is firmly fixed to the top end of the supporting assembly, then the driving assembly is loosened so that the clamping assembly can push the driving assembly to reset, the driving assembly can be clamped and fixed again, the vibration table is prevented from loosening in the working process, a vehicle is prevented from being disengaged from the vibration table in the vibration process, and the service life of the vehicle is prolonged. And the stability of the vehicle in the vibration experiment process is ensured.

The utility model particularly relates to the technical field of plastic film production, and discloses a winding drum for plastic film production, which comprises a drum body, a communicating groove is arranged on the surface of the drum body, arc-shaped grooves are arranged on two side walls of the communicating groove, arc-shaped plates are connected inside the arc-shaped grooves in a sliding mode, and the arc-shaped plates are connected with the communicating groove in a sliding mode. Sliding blocks are slidably connected into the portions, close to the two ends of the arc-shaped plate, of the arc-shaped groove correspondingly, the two sliding blocks are symmetrically distributed, and torsional springs are fixedly connected to the side walls of the sliding blocks correspondingly. The clamping blocks, the sliding blocks, the torsional spring shifting pieces and the second spring are arranged, the two sliding blocks are both in a T shape and are matched with the inner size of the arc-shaped groove and used for supporting and limiting, the two clamping blocks can be driven to rotate around the torsional spring by shifting the two shifting pieces, the two corners of a film can be conveniently and sequentially clamped into the two clamping blocks, and the clamping effect is good. And when the two groups of clamping blocks clamp the corner of the film, the pulling force of the spring II acts on the side wall of the sliding block, so that the film can be stretched flatly, and the clamping efficiency of the film is improved.

The application provides a pressure reducing valve assembly, wherein a valve body comprises a limiting surface and a connecting part arranged in sequence along an axial direction, the connecting part is provided with a locking part movable along the axial direction; a variable diameter ring is located between the limiting surface and the connecting part, the variable diameter ring comprises a limiting part and a mounting part connected with each other, the limiting part is mounted on the connecting part, the mounting part comprises at least three variable diameter strips arranged in sequence along a circumferential direction of the connecting part, an outer diameter of any variable diameter strip gradually increases in a direction away from the locking part, a clamping strip for connecting with an external mounting part is connected, the clamping strip extends in a direction close to the limiting surface, and the mounting part has elasticity. When a mounting hole on a panel is smaller than a size of the mounting part of the pressure reducing valve, the pressure reducing valve assembly provided by the application extrudes the at least three variable diameter strips with elasticity to the inside to reduce the outer diameter of the mounting part, so that the mounting part of the pressure reducing valve is clamped in the mounting hole, and the effect that the pressure reducing valve is adapted to mounting holes with various sizes is achieved.

The utility model relates to the technical field of drill rod guide sleeve, concretely to a kind of drill rod guide sleeve device of anti-deviation positioning, including mounting ring, the top of mounting ring is provided with auxiliary structure, auxiliary structure includes mounting plate, the top of mounting plate is provided with guide rod, the outside of guide rod is provided with lifting ring, the inside of lifting ring is provided with guide hole, the inside of lifting ring is provided with mounting bracket, the inside of mounting bracket is provided with auxiliary cylinder, the inside of auxiliary cylinder is provided with limit block, the outside of auxiliary cylinder is provided with support bearing.The drill rod guide sleeve device of anti-deviation positioning, by adding mounting plate, play the role of fixed guide rod, by the cooperation of guide rod and guide hole, play the role of facilitating lifting ring up and down sliding, by the cooperation of mounting bracket and support bearing, play the role of facilitating auxiliary cylinder rotation by adding support bearing, play the role of reducing friction.

The utility model discloses a refractory brick, which belongs to the technical field of refractory bricks, and adopts the technical scheme that the refractory brick comprises a first brick body, a convex block is arranged on the front side of the first brick body, a second brick body is arranged on the front side of the first brick body, the surface of the convex block is clamped with the inner wall of the second brick body, and the first brick body comprises a base layer; a buffer layer is arranged on the surface of the base layer, a heat insulation layer is arranged on the surface of the buffer layer, a wear-resistant layer is arranged on the surface of the heat insulation layer, and an erosion-resistant layer is arranged on the surface of the wear-resistant layer, so that the problems that the mounting efficiency is low and the mounting precision is difficult to guarantee due to the lack of an effective positioning structure when existing refractory bricks are used are solved. Meanwhile, the problems that the brick body is easily damaged due to stress concentration in the actual use process, the structure of the brick body is easily and seriously damaged after the brick body is eroded by high-temperature chemical substances, the brick body is difficult to stably work for a long time under complex working conditions, and the service life is short are solved.

The utility model discloses a deep well casting device for a fixed furnace, and relates to the technical field of fixed furnace casting. The infrared liquid level detector comprises a well body, a position adjusting mechanism used in cooperation with the well body is arranged at the upper end of an inner cavity of the well body, an infrared liquid level detector body is detachably arranged at the bottom end of the position adjusting mechanism, and a fixing mechanism used in cooperation with the infrared liquid level detector body is arranged on the position adjusting mechanism. The fixing mechanism comprises a lantern ring and a side column, the lantern ring is fixedly connected with the position adjusting mechanism, a concave hole is formed in the outer wall of the lantern ring, a rotating shaft is rotationally inserted into the concave hole, and a rotating plate is fixedly connected to the tail end of the rotating shaft; through the arrangement and use of the fixing mechanism, convenience is provided for convenient rotation and reset of the rotating plate, so that convenience is provided for convenient rotation and reset of the clamping rod, convenience is provided for clamping connection and separation of the clamping rod and the arc-shaped groove, convenience is further provided for disassembly and assembly of the infrared liquid level detector body, and operation and use by a user are facilitated.

The utility model belongs to the technical field of meal boxes, and particularly relates to a multi-directional clamping cover closing type meal box which comprises a box body and a box cover, a first connecting block is arranged at the edge of the side wall of the box body, a buckling groove is formed in the top of the first connecting block, a partition plate is arranged on the side wall of an inner cavity of the box body, a buckling block is arranged at the bottom of the box cover, and the buckling groove is formed in the top of the first connecting block. According to the lunch box, the tightness of the buckling position of the box body and the box cover is improved through the buckling rings, so that the connection sealing performance of the box body and the box cover is improved, and the connection stability of the buckling blocks and the buckling grooves is further improved by clamping the lunch box in multiple directions, so that the overall sealing effect of the lunch box is improved, and the service life of the lunch box is prolonged. The lunch box is not easy to separate during transportation, and food is effectively prevented from spilling and leaking.

The utility model discloses a rail transit electricity testing clamp, rail transit electricity testing clamp includes: holding part, clamp subassembly and solution locking assembly, clamp subassembly includes base, drive shaft, and the first clamp and the second clamp of symmetrical setting in the both sides of base, first clamp, the second clamp is through drive shaft with base rotatory connection to be used for clamping steel rail. Solution locking assembly has the locking state of making clamp subassembly clamping steel rail and keeping locking and the unlocking state of making clamp subassembly with steel rail disengaging, solution locking assembly can switch back and forth between the unlocking state and the locking state. The utility model technical scheme is convenient with the steel rail joint, avoids falling when with the steel rail joint, promotes operation safety and efficiency.

This utility model discloses an improved termite monitoring device, relating to the field of termite monitoring technology. The device includes a main body, with a detachable electronic compartment at its top. The electronic compartment is detachably equipped with a cover mechanism and a sealing mechanism. The cover mechanism includes a compartment ring and an alignment rod. Anti-slip strips are fixedly connected to the outer wall of the compartment ring, and these strips are arranged in an array. A turntable is rotatably mounted on the inner side of the top of the compartment ring. The cover mechanism facilitates the rotation and reset of the turntable, thereby facilitating the rotation and reset of the L-shaped arc-shaped locking block. This, in turn, facilitates the engagement and misalignment of the L-shaped arc-shaped locking block and the arc-shaped baffle, and facilitates the insertion and separation of the alignment rod and the alignment hole. This also facilitates the disassembly and assembly of the compartment ring, and consequently, the opening and closing of the electronic compartment.

The utility model discloses a kind of super-thick prefabricated thermal insulation wallboard installation fixed components, including prefabricated GLC board and cast-in-place concrete beam, the lower portion of cast-in-place concrete beam is provided with embedded part, and the upper portion of prefabricated GLC board is connected with cast-in-place concrete beam by cast-in-place concrete beam bottom embedded part. The middle of the prefabricated GLC board is provided with thermal insulation layer, fixed screw rod is inserted into prefabricated GLC board from thermal insulation layer side, and the inner side of GLC board is provided with connecting piece, connecting piece is L-shaped, top and cast-in-place concrete beam bottom embedded part are connected, fixed screw rod is threaded through prefabricated GLC board and passes through connecting piece, and is fastened using nut. The super-thick prefabricated thermal insulation wallboard installation fixed component can realize the quick installation and fixation of super-thick prefabricated wallboard, is convenient and fast for construction, green and environmental protection, and is conducive to prefabricated wallboard installation quality control.

The utility model discloses a plug temperature measurement sensor, which relates to the field of temperature measurement sensors and comprises a main cylinder, a partition plate is movably connected in an inner cavity of the main cylinder, a main control panel is mounted at the top of the partition plate, a temperature measurement element is mounted at the position of the main control panel, a signal antenna is mounted on the side edge of the top of the partition plate, and the signal antenna is electrically connected with the temperature measurement element. The bottom of the main cylinder is movably connected with an outer cylinder, reset blocks are symmetrically installed on the tops of the two sides of the outer cylinder, a base is installed at the bottom of the outer cylinder, and distance adjusting assemblies are symmetrically installed at the two ends of the top of the base. According to the plug temperature measurement sensor of the utility model, through the arrangement of the main cylinder body, the plug temperature measurement sensor can be conveniently connected with a cable joint needing temperature measurement, temperature measurement work is performed based on the plug temperature measurement sensor, through the arrangement of the signal antenna, temperature measurement data of the temperature measurement element can be transmitted, and through the arrangement of the moisture-proof resin, a moisture-proof effect can be performed on the main cylinder body. Therefore, the overall service life can be prolonged.

The utility model discloses a combined type rubber tube, which is characterized in that the combined type rubber tube belongs to the field of rubber tubes and is provided with a clamping head and a magnetic suction head, a locking structure can be added on the basis of clamping connection of a clamping ring, and the problems that the combined type rubber tube is unstable in connection and easy to fall off, and the combined type rubber tube is poor in structural connection stability and easy to separate are effectively solved. By arranging the magnetic attraction head, the magnetic attraction head is attracted by the attraction block, so that the positioning rod and the clamping head can be conveniently positioned at one position, operation is convenient, and clamping connection of the clamping ring and the clamping groove is more convenient; the clamping rings are arranged, and the clamping rings which are symmetrically distributed can enable the first rubber pipe and the second rubber pipe to be combined and connected more stably; and the movable ring is arranged, the movable ring moves, the first rubber pipe and the second rubber pipe which are connected can be separated, when the first rubber pipe and the second rubber pipe need to be separated and maintained, the first rubber pipe and the second rubber pipe can be conveniently disassembled, and the convenience of operation and use of the locking structure of the device is improved.

The utility model provides a car lamp decoration cover and a car. The car lamp decoration cover comprises a decoration cover body and a driving mechanism. Wherein the trim cover body is arranged on an automobile body and shields a through hole through which automobile lamp light rays penetrate, the trim cover body is provided with a first part and a second part which are adjacently arranged, and the trim cover body is installed on the automobile body through the first part. And the driving mechanism is arranged between the second part and the first part or the vehicle body and can drive the second part to be folded towards one side in the vehicle relative to the first part so as to open part of the through hole. According to the car lamp decoration cover, when a car runs at a low speed or stops statically, the through hole can be closed, and the delicate feeling of the whole car is improved. The trim cover body is provided with the first part and the second part, and the driving mechanism capable of driving the second part to be folded towards one side in the vehicle relative to the first part is arranged, so that when the vehicle runs at a high speed, part of the through holes can be opened, wind resistance can be reduced or parts such as a brake disc can be cooled, and energy consumption of the whole vehicle is reduced.

The utility model provides a lifting column assembly of an electric lifting table, which belongs to the technical field of electric lifting tables and comprises a lifting assembly, a connecting block is arranged on the outer side of the lifting assembly, the connecting block is connected with a decorative cylinder, and the decorative cylinder comprises a first sealing edge connected to the upper end of the decorative cylinder and a second sealing edge connected to the lower end of the decorative cylinder. The lifting column is more attractive in appearance, meanwhile, the lifting assembly can be protected, the decoration barrel is not large in mass, the lifting column is light, transportation and installation are facilitated, the decoration barrel can be installed on site, damage caused by collision in the carrying process is avoided, through grooves are formed in the four corners of the decoration barrel, installation of the first sealing edge and the second sealing edge is facilitated, and connecting openings are formed between the through grooves. And clamping connection of the flange of the second sealing edge is facilitated.

This utility model relates to the field of punching machine technology and discloses a handheld punching machine with a protective structure. It includes a punching machine body, a handle fixedly mounted on the punching machine body, a punching head at the bottom of the punching machine body, and a mounting base fixedly mounted on the bottom wall of the punching machine body. The mounting base has a waste chamber at its bottom, a protective mechanism inside the mounting base, and a limit mechanism inside the mounting base. This handheld punching machine with a protective structure allows the fixed plate in the protective mechanism to be pressed at one end, causing the fixed plate to rotate around a rotating rod, opening the inner side of the mounting base for easy viewing. Simultaneously, the spring force of a torsion spring allows the rotating rod to rotate and reset the baffle on the outer wall of the fixed plate, thus shielding the interior of the mounting base and preventing debris from flying out.

The utility model provides an optical axis supporting seat cambered surface trimming device, which relates to the technical field of fixed supporting seats, comprises an optical axis and a supporting seat, and is characterized in that the outer wall of the optical axis is clamped with two clamping plates, the inner walls of the two clamping plates are provided with a plurality of circular grooves, the inner walls of the circular grooves are provided with springs, and the springs are connected with the supporting seat. A piston plate is installed at one end of the spring, a rubber part is arranged on one side of the piston plate, a connecting rod is installed on one side of the piston plate, the outer wall of the piston plate is arranged on the inner wall of the circular groove in a sleeving mode, the bottom end of the polished shaft is arranged at the top of a supporting seat, and the top of the supporting seat is arranged at the bottoms of the two clamping plates. Through the cooperation of the piston plate, the connecting rod, the circular groove, the spring and the rubber part, a worker can conveniently clamp optical shafts in different shapes, the problem that the upper ends and the lower ends of the optical shafts are inclined and are inconvenient to fix is solved, the optical shafts in different sizes and diameters can be installed, and the practicability of the supporting seat is further improved.