129results about How to "Improve assembly reliability" patented technology

The invention provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a first shell wall, a pole and an insulation sealing structure, the pole comprises a penetrating part and a first extension part, the first extension part extends to the outer side of the outer surface or the inner side of the inner surface of the first shell wall, and a first corner facing the first shell wall is arranged at the joint of the first extension part and the penetrating part; the first shell wall comprises a second corner arranged corresponding to the first corner, the insulation sealing structure is matched between the first shell wall and the pole and comprises a first part and a second part, the material hardness of the first part is smaller than that of the second part, and the first part is arranged close to at least one of the first corner and the second corner relative to the second part. According to the battery monomer, the risk of cracking of the insulation sealing structure is reduced, the reliability of insulation sealing matching between the first shell wall and the pole is improved, and the reliability of the battery monomer is improved.

The invention provides a rapid forming device for a stamping die, which is applied to the field of stamping dies and comprises a movable die set and a fixed die set, the movable die set and the fixed die set are used for simultaneously stamping and forming an N-type workpiece and a shell workpiece, a pin column is assembled between the N-type workpiece and the shell workpiece, the movable die set comprises a movable die seat, and a female die core and a female die column are arranged on the movable die seat; the fixed die set comprises a fixed die base, and a male die core and a slide mechanism are arranged on the fixed die base. Punching assembling mechanisms are further symmetrically arranged on the two sides of the fixed die base. According to the automatic pin column forming and assembling machine, the automation degree is high, forming of an N-type workpiece and a shell workpiece and assembling of pin columns can be completed at the same time in the one-time punching process, multiple traditional punching and assembling procedures are integrated into a continuous operation process, the production efficiency is improved, the production cost is reduced, and the production efficiency is improved. And the production efficiency of the automobile hinge is improved.

The utility model discloses a multi-path wiring terminal convenient to assemble, which comprises an insulated shell assembly and a wiring module arranged in the shell assembly, and the shell assembly comprises a base and a front cover body which are buckled through a buckle structure; the base comprises a bottom plate and side plates located on the two sides of the bottom plate, a partition plate is arranged between the side plates, and a mounting cavity is formed between the two side plates; the upper end of the installation cavity is provided with an open area, so that a monkey wrench of the wiring module is exposed and moves. The front cover body comprises a cover plate and a plurality of plugging columns extending outwards from the front side of the cover plate, and the plugging columns are hollow and are communicated with the mounting cavity to form a wiring channel for a wire to be inserted into the wiring module; after the front cover plate covers the base, the peripheral side wall of the cover plate is connected with the outer surface of the base; therefore, the whole wiring terminal is more flexible and easy to operate in the assembling process, and the assembling efficiency and reliability are improved.

The invention provides an aero-engine rotor blade tip assembly clearance prediction method considering multi-source uncertainty, and the method comprises the steps: analyzing the uncertainty affecting the rotor blade tip assembly clearance, and determining that the level of the rotor blade tip assembly clearance is divided into a phase layer, a blade layer and a blade disc layer; the uncertainty is quantized into an uncertainty variable; and in combination with the deterministic prediction model, calculating to obtain a prediction response of a phase layer by taking the uncertainty variable as input, then calculating to obtain a prediction response of a leaf layer by taking the prediction response of the phase layer as input, and finally calculating to obtain a prediction response of a leaf disc layer by taking the prediction response of the leaf layer as input. According to the method, the multi-source uncertainty in rotor blade tip assembly is considered and quantified, the quantified result serves as input, the blade tip assembly clearance is predicted gradually and progressively from the blade phase to the blade to the blade disc in three levels, the rotor blade tip assembly clearance under the uncertainty condition can be predicted accurately, and the accuracy of the rotor blade tip assembly clearance prediction is improved. And the high-reliability assembly requirement of the blade tip is met.

The utility model relates to the field of automobile seat retainer ring installation equipment, in particular to novel retainer ring assembly equipment which comprises an installation frame, an upper frame is arranged on the installation frame through an upper frame positioning tool, an installation driving mechanism used for installing a retainer ring on the upper frame is further arranged on the installation frame, and the installation driving mechanism comprises a supporting seat. The supporting base can slide on the mounting frame in the direction facing the upper frame, and a positioning detection mechanism used for being connected with the clamping ring in a clamping mode is arranged on the side, facing the upper frame, of the supporting base. According to the utility model, a conventional manual installation mode or a complex equipment installation mode is replaced, the automatic detection and installation process of the retainer ring is realized in a low-cost mode, the influence of product design on the assembly difficulty is reduced, and the stability of product assembly is ensured; the lever structure is used for increasing the acting force when the clamping ring is installed, and stable and reliable installation is guaranteed; and the mounting state of the clamping ring is accurately detected through the positioning detection mechanism, and the neglected mounting condition is avoided.

The invention belongs to the technical field of aero-engines and gas turbines, and particularly relates to a long overhanging thin-wall blade double-journal boring machining method which serves as a machining process method for precisely controlling errors of journals when the long overhanging thin-wall blade has the requirement for precise machining of mounting journals / process journals. Boring is used for precision machining of the double journals of the blade, the traditional journal turning / grinding machining mode is broken through, and the problems of machining chattering and machining deformation of the long-cantilever thin-wall blade are solved. The first-pass yield of shaft neck machining precision reaches 100%, the blade shaft neck machining efficiency of the structure is greatly improved, and the position precision between the shaft neck and a blade body molded surface is further improved.

The invention provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a first shell wall, a pole and an insulation sealing structure, the pole comprises a penetrating part and a first extension part, the first extension part extends to the outer side of the outer surface or the inner side of the inner surface of the first shell wall, and a first corner facing the first shell wall is arranged at the joint of the first extension part and the penetrating part; the first shell wall comprises a second corner arranged corresponding to the first corner, the insulation sealing structure is matched between the first shell wall and the pole column and comprises a third corner arranged corresponding to the first corner and a fourth corner arranged corresponding to the second corner, and at least one of the first corner, the second corner, the third corner and the fourth corner forms a chamfer. According to the battery monomer, the risk of cracking of the insulation sealing structure is reduced, the reliability of insulation sealing matching between the first shell wall and the pole is improved, and the reliability of the battery monomer is improved.

The utility model provides a cover plate assembly, a battery and electric equipment, and relates to the technical field of batteries. The cover plate assembly comprises a cover plate and an electrode terminal. A mounting hole is formed in the middle of the cover plate, and the cover plate comprises a first insulating part; the electrode terminal comprises a terminal piece and a second insulating piece, the second insulating piece is arranged on one side of the terminal piece, at least part of the terminal piece penetrates through the mounting hole and is connected with the cover plate, and the second insulating piece is in surface contact with the first insulating piece. According to the cover plate assembly provided by the embodiment of the invention, the possibility that different parts of the battery cover plate interfere with each other during assembly can be reduced, and the assembly efficiency and the assembly reliability of the battery cover plate are improved.

The invention relates to the technical field of curtain walls, and discloses a high-quality curtain wall system and an assembling method thereof.The high-quality curtain wall system comprises a curtain wall unit, and a supporting adjusting piece is arranged between a target wall body and the curtain wall unit; the curtain wall unit comprises a stand column and an alloy plate, and the alloy plate is connected to the end, away from the target wall body, of the stand column; the supporting adjusting piece comprises a fixing seat and an adjusting bolt, one end of the fixing seat is connected with the outer wall of the target wall body, and the adjusting bolt is connected with the other end of the fixing seat and the stand column; and the reinforcing ribs are respectively connected with the stand columns and the alloy plates, and are welded and fixed with the alloy plates. The structural reliability and cost performance of the curtain wall system are improved, and the assembling reliability of the curtain wall system is improved.

This application claims protection for a pressure vessel, a lighter, and an ignition gun. The pressure vessel includes a gas box and a base plate. The gas box includes a gas box body and a threaded sleeve, which is housed within the gas box body and integrally injection molded with the gas box body. The threaded sleeve is used to connect to an exhaust valve. The base plate is connected and sealed to the gas box body, and a cavity is formed between the gas box body and the base plate to contain fuel. The cavity communicates with the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of fuel. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the accuracy of the threaded sleeve's assembly position on the gas box body, avoiding tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body. This improves the sealing performance and assembly reliability of the pressure vessel, effectively solving common problems such as poor flameout and ignition failure, and providing a reliable guarantee for the performance improvement of lighters, ignition guns, and other products.

The invention relates to the technical field of oil production wellhead devices, and discloses an integral horizontal oil production wellhead device which comprises a wellhead device body, and the wellhead device body comprises a Christmas tree and a Christmas tree valve located at the top end of the Christmas tree; the positioning assembly frame is sequentially provided with an angle regulation and control unit, an upper clamping unit and a lower clamping unit from top to bottom; the upper clamping unit is used for clamping a Christmas tree valve, the lower clamping unit is used for clamping a Christmas tree, and the angle adjusting and controlling unit is used for adjusting the angle of the Christmas tree valve. And the position sensors are arranged on flange plates connected with the Christmas tree and the Christmas tree valve respectively and used for detecting whether the Christmas tree and the Christmas tree valve are located at preset installation positions or not. Rapid installation between the Christmas tree and the Christmas tree valve and between the Christmas tree and the Christmas pipeline is achieved, and the operation difficulty is greatly reduced; and on the basis of the position detection result, actions of the clamping unit and the angle regulation and control unit are controlled, and arrangement of subsequent oil extraction pipelines is facilitated.

The utility model discloses a brake cam rotating shaft, which relates to the technical field of cam shafts and comprises a cam rotating shaft component which comprises a cam part, a cylindrical shaft positioning part fixedly arranged at the lower end of the cam part and a rocker arm embedding part fixedly arranged at the bottom end of the cylindrical shaft positioning part. The center of the cylindrical shaft positioning part is provided with an inward-concave oil lubricating groove unit, the oil lubricating groove unit is of a ladder-shaped inward-concave structure, the rocker arm embedding part comprises an upper embedding part and a lower embedding part which are arranged in a mirror image mode, a stress bearing part is fixedly arranged between the upper embedding part and the lower embedding part, the upper embedding part and the lower embedding part each comprise a limiting boss, and the limiting bosses are arranged on the upper embedding part and the lower embedding part. Embedded tooth blocks are evenly distributed on the outer edge of the limiting boss and are of a ladder-shaped outwards-protruding structure. By improving the lubricating oil groove units, the lubricating effect is enhanced, and friction is reduced; the stress bearing part is optimized, and the stress is uniformly dispersed to improve the stress resistance of the structure; the design of the rocker arm embedding part is improved, and the assembling fixity and the safety of the brake are improved.

The utility model discloses a quick installation bearing assembly structure, which comprises an installation seat, a fixed table and a lifting mechanism arranged on the fixed table, the output end of the lifting mechanism is connected with a sliding cylinder, the lower end of the sliding cylinder is connected with a heating plate, the bottom of the heating plate is connected with a heat conduction pressing plate, and the outer side wall of the heat conduction pressing plate is connected with an electric heating ring. The heating ring is used for heating the heating plate; the electric heating ring, the heat conduction pressing plate and the heating plate are matched, the bearing and the shaft body are assembled according to the thermal expansion and cold contraction principle, compared with a traditional pressurization method, the problem that an inner ring of the bearing and a retainer are damaged or dislocated due to excessive pressure is solved, the heating temperature is accurately controlled through the temperature sensor, and the service life of the bearing is prolonged. And the risk that the local performance of the bearing is changed is reduced, the assembly precision and reliability can be improved, the service life of equipment is effectively prolonged, and particularly, higher applicability and stability are embodied in a complex scene in which a plurality of parts need to be assembled at the same time.

The utility model provides a temperature sensor, which is characterized in that the temperature sensor comprises a thermistor plastic coating sleeve, a lining, a lead, a resistor and a copper bar, the thermistor plastic coating sleeve wraps the resistor through a plastic coating process, the copper bar is connected with the resistor plastic coating sleeve, one end of the lead is connected with the resistor, the other end of the lead is connected with a controller, and the lining is sleeved on the lead. The motor rotor is assembled on a motor in an integrated state, the required space is reduced, and the platformization rate and compactness of the motor are improved to a great extent.

The utility model belongs to the field of quick assembly, provide a portable installation structure and comb grass machine, including machine body, lithium battery, apron and turnover framework. Compared with prior art, the utility model's advantage lies in setting positioning portion and anti -drop portion at every lithium battery bottom, cooperation positioning slot and mounting groove in machine body, so that multiple lithium batteries can be automatically guided and abutted to positioning when assembling, realize quick, accurate positioning installation, significantly improve the assembly efficiency, apron and turnover framework are stacked along the vertical direction in turn, make full use of space, the overall structure is compact, form multistage mechanical pressure locking to lithium battery, effectively prevent lithium battery from loosening or falling off because of vibration or external force during use or movement, improve the safety and stability of equipment operation, the structure avoids the use of a large number of screws, improves the assembly and disassembly efficiency, provides the convenience for subsequent maintenance and replacement.

The utility model relates to an electric reactor winding mould, which comprises two mould cores, a plurality of winding cores and a plurality of winding cores, wherein the two ends of the two mould cores are respectively assembled through baffle plates; the left clamping plate and the right clamping plate are clamped at the two ends of the mold core, and the starting terminal strip and the ending terminal strip are clamped between the left clamping plate and the right clamping plate. Two or more positioning pins are arranged on the left clamping plate, a wire outlet groove is formed in the right clamping plate, one end of the starting terminal strip and one end of the ending terminal strip are installed in the positioning pins respectively, the other end of the starting terminal strip is arranged in the wire outlet groove of the right baffle, and the ending terminal strip fixing plate is installed on the right clamping plate and supports the ending terminal strip; the positioning pin comprises two clamping jaws for clamping the starting terminal strip and the ending terminal strip; the die shaft sequentially penetrates through the left clamping plate, the left baffle, the centers of the two die cores, the right baffle and the center hole of the right clamping plate and extends out of the two ends of the die cores. According to the utility model, the problem of stable winding of the foil winding and the terminal row of the existing inductor device is solved.

The application discloses a kind of full-process supervision systems based on visual offline identification, and the application relates to component production technical field, it is solved that existing technology mostly stays in single size comparison level, lack of the problem of full-process integrated supervision mechanism from model generation, standard matching, automatic splicing to assembly verification, the unified check feature of the present application is constructed by built-in midpoint, plane midpoint and feature vector, corresponding three-dimensional standard model can be matched from model database quickly and accurately, the identification logic is stable, and the anti-interference is strong, effectively avoid the model mismatching problem caused by similar appearance;Through the vector comparison of reference feature and component feature, length difference and included angle calculation, the assembly accuracy can be quantitatively judged, and the assembly standard, correctable and substandard state can be distinguished, the visualization and digitization of assembly quality are realized, the on-site quick error correction and traceability are facilitated, and the assembly reliability and overall production quality of flow line are effectively improved.

The present disclosure relates to a composite separator, a battery assembly and a method for preventing the slippage of an electrode tab, comprising a main separator layer, at least one side edge of the main separator layer being provided with an edge functional area; the edge functional area comprises a guide inclined surface part and an adsorption unit, the adsorption unit has an adsorption surface with an adsorption force not lower than a preset adsorption force, the adsorption unit is integrated on at least part of the surface of the guide inclined surface part and extends towards the surface of the main separator layer; along the direction from inside to outside of the main separator layer, the thickness of the guide inclined surface part gradually increases; wherein the guide inclined surface part guides and laterally limits the position of the electrode tab, and the adsorption unit actively adsorbs the electrode tab, so as to jointly limit the slippage of the electrode tab relative to the main separator layer; after the electrode tab enters a predetermined position, the electrode tab is actively adsorbed and anchored, so that the relative position between the electrode tab and the composite separator is no longer maintained only by the winding tension, the lamination pressure or the electrolyte wetting force, and the edge positioning stability between the electrode tab and the separator is improved.

The utility model discloses a three-way pipe clamping electromagnetic valve which comprises a top cover, a valve body connected to the top cover and a bottom cover connected to the valve body, and the lower half portion of the outer side of the valve body is sleeved with a coil assembly. An adjusting rod is arranged at one end of the valve body, and a pull rod assembly is arranged at the other end of the valve body. The pull rod assembly comprises a spring, a rod body connected to the spring and a clamping block arranged on the rod body, one end of the spring is located in the valve body and abuts against the adjusting rod, and the rod body is slidably connected into the valve body; the three-way assembly is arranged in the valve body and comprises a Y-shaped three-way hose, a first opening of the Y-shaped three-way hose is defined as an inlet pipeline, a second opening of the Y-shaped three-way hose is defined as an outlet A pipeline, a third opening of the Y-shaped three-way hose is defined as an outlet B pipeline, and the clamping block is located between the outlet A pipeline and the outlet B pipeline; according to the electromagnetic valve, the three-way pipe can be switched by adopting a spring system, and meanwhile, the problem of large residual fluid in the three-way pipe is solved by adopting the Y-shaped hose.

The utility model belongs to the technical field of photographic equipment, and particularly relates to a quick release device and a lamp, the quick release device comprises a first connecting piece, a second connecting piece and a third connecting piece, and the first connecting piece is provided with a hook beam; the second connecting piece is provided with a hooking body, the second connecting piece has a first state and a second state relative to the first connecting piece in the first direction, in the first state, the hooking body and the hooking beam are hooked and mutually limited to move in the second direction, and in the second state, the hooking body and the hooking beam are hooked and mutually limited to move in the second direction. The hooking body is separated from the hooking beam and is allowed to move relatively in the second direction; the first direction is perpendicular to the second direction; acting force exists between the third connecting piece and the second connecting piece, and the acting force can enable the second connecting piece to be switched from the second state to the first state. The quick dismounting device provided by the utility model is high in dismounting convenience and reliability.

The utility model relates to the technical field of electronic component manufacturing, and discloses an anti-floating core film capacitor, which comprises a shell, a core is arranged in the shell, two guide needles are welded on two sides of the core, the tops of the two guide needles are connected with magnetic balancing weights in a sliding manner, the magnetic balancing weights are made of aluminum-nickel-cobalt materials, and the magnetic balancing weights are made of aluminum-nickel-cobalt materials. A blind hole is formed in the bottom of the magnetic balancing weight, the guide needle is connected to the interior of the blind hole in a sliding mode, a supporting assembly is installed at the bottom of the magnetic balancing weight, the magnetic balancing weight can be in a spherical shape, a conical shape, a square shape and a cylindrical shape, and the supporting assembly comprises two connecting sleeves. According to the utility model, the magnetic balancing weights in various shapes are used to ensure that the balancing weights are compatible with capacitor pins in different sizes, recovery and cyclic utilization are realized by means of magnets, the problem of floating cores is effectively solved, the assembly precision and reliability are improved, the magnetic balancing weights have the advantage of environmental protection, and the production cost is reduced.

The utility model provides a kind of rotary butt joint surface repair tool, it is related to grinding repair processing technical field.The repair tool of the present application is connected with the datum rotary shaft of self-rotating mechanism by transmission assembly, ensure that grinding head synchronous annular motion with datum rotary shaft, directly with the rotary shaft of component itself as datum to carry out grinding repair to its rotary butt joint surface of butt piece, avoid the indirect error of traditional repair in dependence on external positioning datum, fundamentally ensure the coaxiality of rotary butt joint surface and datum rotary shaft.Connection assembly connects grinding head with transmission assembly and maintains the positional relationship required for grinding, so that grinding head realizes effective grinding to the surface of rotary butt joint in the process of annular motion.The overall structure constructs repair datum using the rotation characteristics of self-rotating mechanism itself, simplifies positioning process, reduces the dependence on operator skills and external equipment, effectively solves the problems of complex positioning, unstable precision of traditional repair tool.

The utility model provides a water softener. The water softener comprises a resin tank; the salt box is provided with a first containing cavity, a mounting opening and a first limiting part, the first containing cavity is used for containing saline water and the resin tank, the mounting opening is located in the top of the salt box and communicates with the first containing cavity, and the first limiting part is located on the bottom wall of the first containing cavity and matched with the lower portion of the resin tank; the supporting middle shell is arranged on the salt box, covers the mounting opening and is provided with a second limiting part, and the second limiting part is arranged around the upper part of the resin tank; and the flexible part is arranged between the outer wall of the upper part of the resin tank and the second limiting part. The first limiting part arranged on the bottom wall of the salt box is matched with the lower part of the resin tank to limit the horizontal displacement; and meanwhile, the second limiting part of the supporting middle shell is combined with the flexible component to conduct surrounding constraint on the upper portion of the resin tank, horizontal movement is limited, vertical vibration is buffered, stable installation of the resin tank is achieved, and the loosening problem caused by machining errors or deformation is avoided.

This utility model discloses a board-to-board connector with varying current ratings, relating to the field of connector technology. It includes an insulating body and a cover fitted onto the insulating body. The insulating body contains multiple rows of terminal holes, which are divided into standard terminal holes and large-size terminal holes. Standard terminal holes house standard current terminals, while large-size terminal holes house high-current terminals. This utility model integrates two types of terminal holes and corresponding terminals within the same insulating body, eliminating the need for separate connectors and simultaneously meeting the requirements for low-current signal transmission and high-current power supply, significantly improving functional integration. It effectively reduces the space occupied by the device, adapting to the miniaturization trend of electronic equipment; reduces assembly steps and the number of wiring harnesses, lowering assembly costs and failure risks, and improving equipment operational stability.

The present invention discloses a fixing and unlocking mechanism for a circuit breaker, which relates to the field of circuit breakers, and comprises a circuit breaker housing, a button and a limiter, wherein the limiter is elastically hingedly installed in the circuit breaker housing and is located above and in front of the button, a window is provided on the upper surface of the circuit breaker housing, a locking boss which can pass through the window is provided on the upper surface of the limiter, and the locking boss has a first state of extending out of the window to prevent the circuit breaker from entering a cabinet and a second state of retracting into the window to prevent the button from closing. The present invention has the advantages of good assembly reliability and good working stability.

The embodiment of the utility model belongs to the technical field of nylon tube processing. The utility model further relates to nylon pipe end chamfering equipment which comprises a supporting seat, a chamfering device and a chamfering device. The connector is installed on the top of the supporting seat. The output shaft of the connector is connected with a tool apron, the tool apron is provided with a tool groove, the tool groove is internally provided with a chamfering tool through a bolt, the chamfering tool is obliquely arranged, the tool apron is fixedly connected with a light touch switch, and the position of the light touch switch corresponds to the position of the rotation center of the tool apron. Through the arrangement of the touch switch, the touch switch can control the insertion in place and ensure the insertion depth, so that the consistency of the chamfering size is ensured, and the assembly quality and reliability are improved.

The utility model discloses an integrated engine accessory support assembly and an engine. The integrated engine accessory support assembly comprises a mounting plate, a top frame, a side convex mounting block and an arc-shaped positioning plate, a top frame is arranged on the top surface of the mounting plate; arc-shaped positioning plates are arranged on opposite side walls of the mounting plate; a side convex mounting block is arranged outside the arc-shaped positioning plate on one side; an air conditioner, a belt idle pulley and a generator; the air conditioner is mounted on the top frame; the belt idle pulley is mounted on the side convex mounting block; and the generator is accommodated below the top frame and is connected with the arc-shaped positioning plate. By the adoption of the assembly, the overall width of the engine can be effectively reduced, the engine assembly can be suitable for vehicle models of narrower models, and the sales range of the engine provided with the assembly is widened. The utility model discloses an integrated engine accessory support assembly.

This invention provides a vehicle air supply system and a vehicle pressure reducing valve. The vehicle air supply system adopts a high-pressure dryer and a back-blowing pipeline structure, which can regenerate the dryer by back-blowing and recover high-pressure gas to a low-pressure storage tank, reducing energy consumption. The vehicle pressure reducing valve in the system includes a body, a primary pressure reducing mechanism, and a secondary pressure reducing mechanism. The body is equipped with a vent, a supply channel, and a transmission channel. The secondary pressure reducing mechanism contains a secondary pressure regulating spring, a secondary return spring, a pressure relief groove, and a secondary valve core, which can realize step-by-step pressure reduction and stabilization of gas, and automatically release pressure when overpressure occurs to protect the gas-using components. It has high pressure regulation accuracy and stable and reliable operation. In conjunction with the vehicle air supply system, it can simultaneously meet the gas demand of the high-pressure air spring and the low-pressure gas-using unit. The system has high integration, good drying effect, safety and stability, and significantly improved applicability and service life.

This utility model relates to the field of mold base technology, specifically a mold base structure for quick mold replacement. It includes a base with four guide grooves at its four corners. These guide grooves are used to engage with guide posts of external equipment for guidance. Multiple fixing holes are provided on the side of the base adjacent to the guide grooves for fixing the base to an external support device. An assembly groove is provided on the side of the base adjacent to the fixing holes. Four assembly screw holes are provided at the four corners of the assembly groove. An assembly mechanism is installed in the assembly groove via bolts. The outer circumferential surface of the assembly mechanism is clearance-fitted with the inner wall of the assembly groove, enabling rapid mold positioning and replacement. This utility model achieves rapid self-correction and positioning of the mold through the guiding engagement of the sliding block and the sliding groove, and the self-centering structure of the positioning groove, significantly improving mold replacement efficiency. Furthermore, based on modular assembly and locking mechanisms, it ensures stable collaborative positioning, avoids uneven stress, and improves assembly reliability.

The utility model provides an elevator entrance protection device for building construction. The elevator entrance protection device for building construction comprises supporting frames which are symmetrically arranged, and sliding groove blocks are fixedly installed on one sides of the supporting frames; the transverse plate is installed on the sliding groove block in a sliding mode, a detachable protective net plate is arranged on the transverse plate, and the protective net plate is used for shielding an elevator opening; the sliding rod is installed on the supporting frame in a sliding mode, and an assembling block is fixedly installed at the top end of the sliding rod; and the mounting sleeve is arranged on the assembly block. According to the elevator opening protection device for building construction, through the stable base design of the supporting frame, efficient adjustment of the sliding rod and the first bolt, tight connection of the transverse plate and the protection net plate and accurate limiting of the support and the limiting plate, effective protection of an elevator opening is achieved, and the potential safety hazard problem of the elevator opening in a building construction site is solved.