38results about How to "Limit rotation" patented technology

The utility model discloses a disc-shaped suspension insulator triple tension string which comprises three adjusting discs, a hanging plate is installed above the adjusting discs, a disc-shaped suspension insulator is installed above the hanging plate, a three-to-two yoke plate is installed at the top of the disc-shaped suspension insulator, a yoke plate is installed at the top of the three-to-two yoke plate, and a tension spring is installed at the top of the yoke plate. The adjusting disc comprises a shell, a fixing block is fixed in the shell, a grading ring is arranged on the outer side of the disc-shaped suspension insulator, and the top of the grading ring is fixedly connected with the three-to-two yoke plate. According to the disc-shaped suspension insulator triple strain insulator string, the adjusting disc is arranged, a hexagonal wrench rotates a hexagonal block, the hexagonal block drives a worm to rotate, the worm rotates to drive a worm wheel to rotate, the worm wheel drives a bolt inserted into a through hole to move, and therefore the distance between a hanging point fitting and a hanging plate can be adjusted, operation is simple and convenient, and the bolt and a nut do not need to be loosened; bolts are inserted into different holes, and then the screwing nuts are screwed to adjust the distance.

The utility model belongs to the technical field of guitars, and discloses a guitar shell, which comprises a guitar body and a guitar neck, the guitar body is connected with the guitar neck through a fixing bolt, a positioning assembly is arranged on the guitar neck at a position corresponding to the fixing bolt, and the positioning assembly comprises a fixing shell fixed on the guitar neck. Two springs which are symmetrically arranged up and down are arranged in the fixed shell, movable plates are connected to the ends, away from each other, of the springs, movable rods are connected to the sides, away from the springs, of the movable plates, the ends of the movable rods penetrate through the fixed shell and are connected with sawtooth plates, and the positioning assemblies can effectively limit displacement and rotation of the fixed bolts; according to the guitar, the connecting stability of the guitar body and the guitar neck is greatly enhanced, the loosening frequency of the fixing bolt is reduced, the times of checking and fastening the bolt by a player are reduced, the maintenance time and energy are saved, meanwhile, guitar performance reduction caused by loosening of the bolt is avoided, the service life of the guitar is prolonged, and the maintenance cost is reduced.

The utility model provides a sputum suction tube flushing device, and belongs to the technical field of sputum suction tubes. The sputum suction tube flushing device comprises a flushing assembly and an adjusting assembly, the flushing assembly comprises a bottom plate, a driving part, a sliding rod, a piston, an injection tube, a liquid suction tube, a flushing tube and a one-way valve, the driving part is arranged at the bottom of the bottom plate, and the adjusting assembly comprises an elastic part, a sliding ring and a positioning rod. By arranging the bottom plate, the driving piece, the sliding rod, the piston, the injection pipe, the liquid suction pipe, the flushing pipe and the one-way valve, the one-way valve is adopted to control the liquid suction pipe and the flushing pipe to flow liquid in one way, the situation that a sputum suction pipe needs to be disassembled to repeatedly suck and supplement normal saline for continuous flushing can be avoided, steps are reduced, and efficiency is improved; by arranging the elastic piece, the sliding ring and the positioning rod, the sliding ring can be rotated to drive the injection tube to rotate to adjust the positions of the liquid suction tube and the flushing tube, the device adapts to adjustment of the positions of different patients or sputum suction tubes, and practicability is improved.

The utility model discloses a kind of limit pin shafts, include: pin shaft body, limit ring, stud bolt and positioning pin, pin shaft body is cylindrical, one side is provided with the flange extending along circumferential direction, flange is provided with pin groove, the other side is provided with external thread;Limit ring is threadedly connected on pin shaft body, limit ring is annular structure, its inner hole is provided with internal thread, limit ring is provided with opening, opening is communicated with inner hole and outer peripheral surface;The inner hole of limit ring is provided with axial slot along axial direction, axial slot is through inner hole, limit ring is provided with axial through-hole, the side portion of axial slot, axial through-hole is communicated;The outer wall of limit ring on the both sides of opening is respectively provided with connecting hole, one connecting hole is threaded hole, stud bolt is installed in connecting hole, positioning pin is installed in pin groove.The utility model also a kind of pin shaft limiting assembly.The utility model can improve the safety and reliability of pin shaft.

The invention belongs to the technical field of organic light-emitting materials and semiconductors, and particularly relates to a difluoro-boron imidazole heterocyclic compound and an electroluminescent device thereof. The structural general formula of the difluoro-boron imidazole heterocyclic compound is as shown in the general formula 1. According to the difluoro-boron imidazole heterocyclic compound provided by the invention, a TADF object structure material taking a benzimidazole difluoro-boron heterocyclic ring as a skeleton is subjected to precise functional modification on a 12-site of a host structure, so that the TADF object structure material can be used as an electron acceptor when being connected with an electron-donating group; and when connected with an electron withdrawing group, the compound can be used as an electron donor to form a bidirectionally adjustable D-A type TADF molecular design, so that the difluoro-boron imidazole heterocyclic compound and an electroluminescent device prepared by taking the difluoro-boron imidazole heterocyclic compound as a guest luminescent material are obtained, and the technical problems that the existing TADF is low in luminous efficiency, short in service life and poor in luminous color purity are solved.

This application relates to the field of photovoltaic (PV) bracket design, and provides an adjustable solar PV bracket, including a main beam, at least one support column, and at least one semi-circular panel frame. The support column is fixed to a foundation carrier, and the main beam is rotatably mounted on the top of the support column. The semi-circular panel frame is fixed to the main beam, and an adjustment mechanism is provided between the semi-circular panel frame and the support column. The support column is equipped with a locking mechanism for positioning the rotation angle of the semi-circular panel frame. The locking mechanism includes a rotating rod and a sliding rod. The rotating rod is rotatably connected to the support column, and the rotation of the rotating rod can drive the sliding rod to move axially. In addition, a housing component is fixed to the side of the support column for covering the rotating rod and the first panel frame. Based on this, the accidental change of the installation angle of the PV bracket can be reduced, ensuring that the PV panel maintains good power generation efficiency.

The utility model relates to the technical field of waveguide tubes, and particularly discloses an antenna waveguide tube machining clamp. Comprising a base, a clamping mechanism and a bearing seat, wherein the clamping mechanism and the bearing seat are arranged on the base; the clamping mechanism comprises a mounting seat arranged on the base; the mounting seat is provided with a support arm and a clamping cylinder arranged on the support arm, and the tail end of a piston rod of the clamping cylinder is provided with a clamping block which can abut against the waveguide tube; and the clamping block is also provided with a limiting pad for limiting the waveguide tube to rotate. By means of friction force generated between the limiting pads on the clamping blocks and the waveguide tube, rotation of the waveguide tube can be effectively limited, and displacement errors caused by unstable clamping in the machining process are prevented.

The invention relates to the field of high polymer materials, and mainly relates to an ATzP monomer, PATzP wear-resistant resin with a rigid-tough synergistic characteristic and a preparation method of the ATzP monomer and the PATzP wear-resistant resin. The invention relates to a preparation method of an ATzP monomer. The preparation method comprises the following steps: carrying out a reaction on melamine and 4-chloropyrrolopyrimidine to prepare a compound-A; reacting the compound-A with sodium amide to obtain a compound-B; and mixing the compound-B, an acid-binding agent and a polar aprotic solvent B, and then condensing with methacryloyl chloride at the temperature of-35 + / -5 DEG C to obtain the ATzP monomer. The invention relates to a PATzP wear-resistant resin with a rigid-tough synergistic characteristic. The PATzP wear-resistant resin is prepared from the following raw materials: an initiator and an ATzP monomer. On the premise of maintaining high rigidity, the toughness, impact resistance and wear resistance of the material are remarkably improved.

The utility model provides a self-tapping screw and relates to the technical field of fasteners, the self-tapping screw comprises a top plate and a threaded rod, a plurality of through holes are formed in the top plate in a circumferential array mode, the self-tapping screw further comprises a hexagonal screw head, a base plate is arranged on one side of the hexagonal screw head, a plurality of stabbing rods are arranged on one side of the base plate in a circumferential array mode, and the number of the stabbing rods is the same as that of the through holes. The self-tapping screw further comprises an annular flexible cushion layer arranged on one side of the top plate, the flexible cushion layer is fixedly connected with the top plate and the pricking rod at the same time, when the self-tapping screw is used, the pricking rod can be pricked into a wood object connected with the pricking rod, and therefore rotation of the threaded rod can be limited; and only when the pricking rod is moved away from the wood object, the threaded rod starts to be loosened, so that compared with a traditional self-tapping screw, the effective connection time of the self-tapping screw can be prolonged, and the connection stability is improved.

The application discloses a kind of quality flow test methods of automobile safety air bag gas generator based on acceleration sensor, utilize rigid container, piston, acceleration sensor, refrigeration type infrared thermal imager, pressure sensor and data recording device;The linear motion process of piston is measured by acceleration sensor, and the volume of gas generated by gas generator is converted;Combining the measured gas pressure, temperature, the gas density is solved by ideal gas state equation;Gas volume and density are solved by gas mass flow and its dynamic change.By the application, the mass flow of mixed gas generated after ignition of air bag gas generator and the mass flow of single gas component can be measured, and a gas mass flow test method is provided for the research and production of actual air bag gas generator.

The application relates to the technical field of base station antenna connection, and discloses a base station antenna connection device which comprises a positioning piece, the positioning piece is composed of two symmetrically arranged positioning hoops, the two ends of the positioning hoops are connected with elastic connecting pipes, the outer parts of the elastic connecting pipes are connected with matched connecting sleeves, a plurality of limiting clamping grooves are equidistantly arranged on the two sides of the outer wall of the connecting sleeve, and a connecting part is detachably arranged outside the limiting clamping grooves; the connecting part comprises a connecting component I and a connecting component II. The semi-arc structure design of the positioning hoop and the elastic connecting pipe enhances the adhesion with the antenna holding pole, disperses the pressure on the holding pole, and reduces local abrasion. The threaded cooperation of the connecting sleeve and the elastic connecting pipe makes the installation distance adjustable and controllable, the self-locking property of the threaded connection can prevent loosening after adjustment, the limiting edge and the limiting clamping groove are matched, the detachable connection of the connecting part and the connecting sleeve is realized, the rotation of the connecting part can be limited, and the overall structural stability is enhanced.

The utility model provides a kind of bolt mounting structure and vehicle bogie, it is related to railway vehicle technical field, bolt mounting structure is applied to vehicle bogie, and vehicle bogie includes framework and drive system;Bolt mounting structure includes connecting flange, multiple mounting seat, mounting nut and bolt rod;Connecting flange is located between framework and drive system;Multiple mounting seat is located in the cavity of framework, and mounting nut is located on multiple mounting seat;Bolt rod is through the outer wall of framework, connecting flange and drive system, and one end is matched with mounting nut, and the other end extends to the mounting hole outside drive system shell. Through external bolt rod and built-in linkage type mounting seat cooperation, fastening operation is completed completely in external space. Realize the convenient installation and visual maintenance of bogie framework and drive system. Operating personnel can complete bolt fastening operation without entering cavity, significantly reduce installation difficulty and time cost.

The utility model provides a kind of valve body of shower gondola faucet, including valve core body, cold water inlet end and hot water inlet end are provided on the valve core body, cold and hot water valve seat is provided on the valve core body, cold water inlet hole and hot water inlet hole are respectively set on the cold and hot water valve seat, cold water inlet channel, hot water inlet channel for being connected with hot water inlet end and hot water inlet hole are respectively set on the valve core body, water outlet hole is set on the valve core body, water channel is set on the cold and hot water valve seat, after the both are finished, valve core body is pushed into assembly bore from the opening end of the other end of assembly shell, and the position of valve core body is adjusted so that cold water connection port and hot water connection port are respectively corresponding with the position of cold water inlet end and hot water inlet end, the valve body of shower gondola faucet is formed, different materials are selected to produce by valve core pipe and assembly shell, and production cost can be further reduced when shower gondola faucet is produced.

The application relates to the technical field of water surface base station equipment, and provides a water surface base station. The water surface base station comprises a base station mounting seat provided with a first connecting piece and a second connecting piece, and a communication assembly provided with a first connecting matching piece and a second connecting matching piece; the first connecting matching piece is detachably connected with the first connecting piece, and the second connecting matching piece is detachably connected with the second connecting piece, so that the communication assembly is detachably connected with the base station mounting seat; when the first connecting matching piece is connected with the first connecting piece, the communication assembly can be limited in the axial direction and the radial direction, and the second connecting matching piece can be connected with the second connecting piece to limit the rotation of the communication assembly.

The utility model discloses a metal 3D printing dental split type pure titanium pile core which comprises a root pile core, a threaded block is integrally formed at the top of the root pile core, a crown pile core is arranged above the root pile core, a threaded groove is formed in the bottom of the crown pile core, the threaded groove is in threaded connection with the threaded block, and the threaded block is in threaded connection with the root pile core. A threaded groove is formed in the top of the threaded block, a circular groove is formed in the top of the threaded groove, two sliding grooves are formed in the outer side wall of the circular groove, inserting plates are slidably connected into the sliding grooves, a circular block is fixed to the top of the threaded block, and an inserting opening is formed in the top of the circular block. When the crown pile core and the root pile core are in threaded connection, the hexagon wrench is inserted into the hexagonal hole and extrudes the pushing plate, the pushing plate drives the inserting plate to move, after the root pile core and the crown pile core are in threaded connection, the inserting plate corresponds to the inserting opening, the hexagon wrench is taken down, the compression spring pushes the pushing plate and the inserting plate to move, the inserting plate is inserted into the inserting opening, and rotation of the crown pile core can be limited. And torsion during occlusion is prevented.

The application relates to the field of stainless steel pipe connection, and discloses a stainless steel pipe connection sealing mechanism, which comprises two stainless steel pipes and a connecting head arranged between the two stainless steel pipes. Inner thread assembly grooves are arranged on the left and right sides of the connecting head. A same communication hole is arranged on the inner wall of the side, where the two inner thread assembly grooves are close to each other. The ends, where the two stainless steel pipes are close to each other, respectively penetrate through the corresponding inner thread assembly grooves and extend into the communication hole. Bearings are fixedly sleeved on the two stainless steel pipes. The outer rings of the two bearings are fixedly sleeved with outer thread sleeves. The application has the following advantages and effects: multiple sealing between the two stainless steel pipes and the connecting head can be realized, the sealing performance of the connection part of the two stainless steel pipes can be ensured through the synergistic effect of multiple sealing, the omnibearing sealing effect is realized, and the application is suitable for fluid conveying scenes with strict sealing requirements.

The utility model relates to a bridge crane steel wire rope replacing device and belongs to the technical field of bridge cranes. The bridge crane steel wire rope replacing device comprises a supporting base and a rotating mechanism arranged on the supporting base. The rotating mechanism comprises a rotating disc rotationally installed on the top of the supporting base, a thrust bearing arranged at the bottom of the rotating disc and a brake assembly used for limiting rotation of the rotating disc. The device has the effect of reducing potential safety hazards caused by stall of the winding drum when the steel wire rope is replaced.

The utility model discloses a phased array radar skeleton, which relates to the technical field of radar skeletons and comprises a skeleton body, and the skeleton body comprises a plurality of connecting rods, a plurality of hub nodes and a plurality of fixing assemblies. A plurality of inserting grooves are formed in the hub nodes, inserting blocks are arranged at the two ends of the connecting rods, the fixing assemblies are arranged on the hub nodes respectively, the inserting grooves are used for allowing the inserting blocks to be inserted, and the fixing assemblies are used for limiting the inserting blocks on the hub nodes to be disengaged from the inserting grooves respectively. Compared with a traditional phased array radar skeleton formed by welding, the phased array radar skeleton provided by the embodiment of the utility model does not need to use professional welding equipment during maintenance, and the replacement mode of the connecting rods and the hub nodes in the phased array radar skeleton is simpler and more convenient. And the convenience of maintenance personnel to maintain the phased array radar skeleton can be improved.

The utility model belongs to thrust bearing dismounting technical field discloses a kind of oil delivery pump thrust bearing dismounting device, including extension sleeve and multiple traction mechanism, and the outer thread of extension sleeve one end is equipped with with the coaxial cooperation connection of inner thread of thrust bearing mounting shaft;Every traction mechanism includes traction assembly and guide component, guide component includes guide and guide rod, and extension sleeve side wall is equipped with multiple guide channels extending along its axial direction;One end of every traction assembly is detachably connected with thrust bearing, and the other end of traction assembly is detachably connected with corresponding guide, guide first end is inserted in guide channel, and with guide rod abutment, can directional sliding along guide channel, for limiting the radial rotation and axial movement distance of traction assembly.The utility model can be suitable for the dismounting of narrow space thrust bearing, improve dismounting efficiency, can effectively limit the rotation and axial movement of thrust bearing in dismounting process, realize the accurate positioning of dismounting.

The utility model relates to the field of seed germination equipment, in particular to a seed germination device which comprises a box body, a plurality of containing grooves are formed in the upper surface of the box body, every two adjacent containing grooves are communicated through a through hole, culture boxes are placed in the containing grooves, and each culture box comprises a box body with an opening in the top face. A baffle is movably mounted on the top surface of the side wall of the box body; beveling grooves are formed in the edges of the top surfaces of the accommodating grooves; the distance from the lower edge of the beveling groove to the bottom face in the containing groove is larger than the height of the box body. Compared with the prior art, the seed germination device has the advantages that the containing grooves and the through holes are formed in the box body, so that water can circulate between the adjacent containing grooves, and uniform humidity is ensured; the baffle movably installed on the top face of the side wall of the culture box body facilitates separation of seedlings and bottom laying materials after seed germination, and the risk of root damage during transplanting is reduced.

A turnout limiter force transmission mechanism with the adjustable position comprises an A-type limiter, an A clamping plate, a B-type limiter and a B clamping plate, the A-type limiter and the B-type limiter are oppositely arranged between a stock rail and a switch rail, the force transmission mechanism further comprises an eccentric sleeve, the eccentric distance between the inner diameter and the outer diameter of the eccentric sleeve is Pmm, the eccentric sleeve is installed in a bolt installation hole, and the bolt installation hole is formed in the eccentric sleeve. The bolt is driven to move in the line direction by rotating the position of the eccentric sleeve in the bolt mounting hole, so that the A-type limiter and the B-type limiter which are connected to the bolt move synchronously, and stepless adjustment of the gap value of 0-Pmm between the A-type limiter protruding block and the B-type limiter groove is achieved. According to the force transmission mechanism, the gaps between the convex blocks of the two limiters and the side faces of the grooves can be rapidly adjusted, the problem that the maintenance workload is increased due to the fact that parts such as base plates and fasteners in long sections of a switch rail and a stock rail are disassembled conventionally is solved, and therefore the turnout maintenance time and the occupied operation time are shortened to a large extent.

The invention relates to the technical field of aircrafts, in particular to a freight unmanned aerial vehicle cargo hold tail door actuation system and a control method, and the actuation system comprises a door frame, a first cabin door, at least two second cabin doors, a lifting mechanism and a split mechanism. Specifically, the door frame is arranged on the periphery of an opening of a stern room; the first cabin door is hinged to one end of the door frame and used for closing the tail cabin opening close to the nose. The two second cabin doors are hinged to the two sides of the door frame in an oppositely-opened state correspondingly and used for closing the remaining part of the tail cabin opening; the lifting mechanism is used for controlling the first cabin door to be opened or closed and can be opened by a maximum angle when the first cabin door abuts against the ground or is limited by an external object, and the situation that the lifting mechanism is overloaded and damaged or continuously drives the first cabin door to be opened to cause damage to the cabin door or the fuselage is prevented. The opposite opening mechanism is used for driving the two second cabin doors to be opened or closed. The tail cabin door has the effects that the operation stability of the tail cabin door is improved, and damage to the tail cabin door or a fuselage when the tail cabin door is opened is reduced.

This application provides a fixing structure for armored temperature measuring cables, belonging to the field of temperature measuring cable technology. The fixing structure includes a protective component and a connecting component. The protective component includes a connecting seat, a protective cylinder, an elastic element, a locking rod, and a protective cover. The connecting seat is located on the top of the coal bunker. The connecting component includes a limiting ring, a cable connection part, a temperature measuring cable body, and an external cable. The limiting ring is fixedly connected to the inner wall of the protective cylinder. By using the connecting seat, protective cylinder, elastic element, locking rod, and protective cover, the protective cover is threaded onto the protective cylinder. The elastic element then pushes the locking rod to hold the protective cover in place, restricting its rotation and preventing loosening of the protective cover's threads. By incorporating the limiting ring, cable connection part, temperature measuring cable body, and external cable, the installation method using multiple bolts is avoided, greatly improving the efficiency of disassembly, assembly, repair, and maintenance.

The utility model relates to photovoltaic support design technical field discloses a photovoltaic support and photovoltaic system, and photovoltaic support includes wall hanging subassembly, connecting piece and telescopic subassembly, wall hanging subassembly and connecting piece one -to -one setting, and connecting piece includes platform part, first connecting part and convex structure, and first connecting part is connected with platform part, and convex structure is connected with platform part, and the convex structure is suitable for and photovoltaic frame abuts, telescopic subassembly sets up at least one, and telescopic subassembly sets up between wall hanging subassembly and connecting piece, and is connected with wall hanging subassembly and connecting piece. The utility model discloses the convex structure of additional setting on connecting piece, utilizes the convex structure and platform part to abut on both sides with photovoltaic frame, makes the area of connecting piece and photovoltaic frame's sticking larger, and effectively limits the rotation of connecting piece when tightening bolt simultaneously, thereby guarantees the connecting stability of connecting piece and photovoltaic frame, avoids the emergence of photovoltaic module's escape, the situation of falling.

This utility model relates to a profile structure for a planar skylight, comprising a steel beam, a transition plate, a profile assembly, and a glass panel. The transition plate is fixedly mounted on the steel beam at intervals. The profile assembly includes a subframe and a base. The subframe includes a central portion and an upper edge plate. The lower part of the central portion is fixedly connected to the transition plate, and the upper edge plate is symmetrically fixed to both sides of the top of the central portion. The base includes a support and a fastening component. The support is fixed to the upper edge plate and has a fastening end. The lower surface of the fastening component has a fastening groove that is adapted to and fastens with the fastening end. The upper surface of the fastening component is fixedly connected to the glass panel. The fastening component can be pre-fixed to the glass panel to ensure the assembly quality of the glass and the base. During on-site construction, the position of the glass panel is determined by adjusting the installation of the profile base and the support. Then, the glass panel can be quickly positioned and installed by the fastening groove and the fastening end engaging.

The utility model provides an improved photovoltaic clamp, including first clamping piece, second clamping piece, bolt assembly, first clamping piece includes the first upper roof of C-shaped structure integrated moulding, first support plate, first clamping plate, second clamping piece includes the second upper roof of C-shaped structure integrated moulding, second support plate, second clamping plate, first clamping piece and second clamping piece form the clamping cavity and have second upper roof and top in first upper roof bottom surface after assembling, bolt assembly includes polygonal bolt, second upper roof bottom surface is opposite and is provided with the first hook portion and second hook portion of the restriction polygonal bolt and turn, first hook portion includes first vertical limiting section and first hook, and first vertical limiting section and first hook form first and top step between, second hook portion includes second vertical limiting section and second hook, and second vertical limiting section and second hook form second and top step between. Improved photovoltaic clamp has the advantages of simple structure, convenient installation, low cost, strong applicability.

The utility model relates to a single longitudinal arm formula independent suspension and vehicle. Wherein single longitudinal arm formula independent suspension includes: shock absorber, shock absorber's first end is connected with the frame, the longitudinal arm is the triangular structure, the first side of longitudinal arm is fixedly connected with the frame, and the first angle opposite with first side is provided with the connecting end, and the connecting end is used for with the brake caliper support of vehicle and the second end of shock absorber is connected. The single longitudinal arm formula independent suspension and vehicle structure compact that the utility model provides have strong carrying capacity, can reduce production and maintenance cost.

The utility model relates to vehicle nut anti -loosening technical field, concretely is a nut anti -loosening device, including the tooth cover and flange prong, the top of tooth cover is established with the locating groove, the locating groove penetrates tooth cover, the top fixed mounting of tooth cover has two fixed blocks, the top of fixed block is fixedly connected with the bottom of baffle, the screw hole of baffle outside one end top is connected with the fastening bolt with the internal thread, the fastening nut is connected with fastening bolt on screw thread, the bottom fixed mounting of baffle outside one end has the support block, the bottom of support block is flush with the bottom of tooth cover, the side of flange prong is detachably connected with the divider flange disc through the bolt, the middle part of divider flange disc end surface is provided with the nut, the fastening bolt and support block are tightly in the observation hole, this nut anti -loosening device can effectively limit the rotation of nut, prevents its loosening under the high -frequency vibration and high -speed rotating environment.

The application relates to the technical field of concrete crack detection, in particular to a sewage plant structure concrete crack monitoring device, which comprises a main plate and a secondary plate, the main plate and the secondary plate are arranged on a concrete structure and have a spacing, a hollow display cylinder is detachably arranged on the main plate, a one-way valve is arranged on the display cylinder, a transparent observation window is arranged on the display cylinder, a hollow glass column is arranged in the display cylinder, peroxide is filled in the glass column, a mixed solution of fluorescent and lipid compounds is filled in the display cylinder, a positioning piece for fixing the glass column is arranged on the display cylinder, a pull rod is slidably arranged between the inner and outer sidewalls of the display cylinder, the glass column is arranged at one end of the pull rod, the other end of the pull rod away from the glass column extends to the secondary plate, and a fixing piece for fixing the pull rod is arranged on the secondary plate. The application has the effect of reducing the difficulty of concrete monitoring.

The silicon-based microneedle mold comprises a base, a silicon-based microneedle upper mold body, a silicon-based microneedle lower mold body, a ball nut and a demolding plate, a motor is installed in the base, a screw rod is installed at the power shaft end of the motor, the ball nut is installed on the screw rod in a threaded mode, a supporting rod is installed on the ball nut, and the silicon-based microneedle upper mold body and the silicon-based microneedle lower mold body are installed on the supporting rod. A supporting rod is installed on the base, a mounting table is installed at the top end of the supporting rod, a silicon-based microneedle lower mold is installed on the table top of the mounting table, a support is installed on the base, a linear motor set is installed on the support, an electric telescopic rod C is installed on the linear motor set, a demolding plate is installed at one end of the electric telescopic rod C, and a suction pump is installed on the demolding plate. A suction cup is installed on the bottom face of the demolding plate, and the suction pump is connected with the suction cup. According to the silicon-based microneedle demoulding device, the complexity and low efficiency of manual demoulding are avoided, the problem of adhesive residue caused by demoulding by using adhesive is also avoided, and the production efficiency and the product quality of the silicon-based microneedle are improved.