45results about How to "Reduce assembly complexity" patented technology

The utility model discloses an integrated carrying device and an unmanned aerial vehicle. The integrated carrying device comprises a radar support, a carrying bin and a rack which are sequentially connected from top to bottom. The radar support is used for installing a radar, and the carrying bin is used for installing a holder and an airborne computer. The radar support, the carrying bin and the rack are formed by integrally cutting carbon fiber plates, and hollow weight reduction areas are arranged on the radar support, the carrying bin and the rack. The utility model has the characteristics of compact structure, high space utilization rate, high reliability and the like, realizes extreme light weight on the premise of ensuring the structural strength, and modularizes the installation of the radar, the airborne computer and the pan-tilt in the vertical space, so that the installation, debugging and replacement of various task equipment are more convenient, and the installation cost is reduced. And a universal carrying platform with high integration level and high reliability is provided for the multifunctional unmanned aerial vehicle.

This application relates to the field of electrical components, specifically to a filter; it includes a housing, a resonant cavity, several stub transmission plates, and a connector; the lateral extensions of adjacent stub transmission plates are connected at intervals by insulating connectors to form a main connector, the two ends of the main connector are electrically connected to the connector, and the lateral extensions of each stub transmission plate are staggered on both sides of the main connector and electrically connected to the sidewall of the resonant cavity; through this structure, the stub transmission plates form a continuous whole, effectively improving mechanical strength and resonant stability, simplifying assembly processes and reducing the number of solder joints; at the same time, the staggered arrangement of the main connector and the stub transmission plates improves the utilization rate of cavity space, which is conducive to realizing miniaturization and high integration design.

A gas spring mounting structure and connection structure, and a device having an opening and closing mechanism are disclosed. The gas spring mounting structure is used to connect the gas spring to the opening and closing mechanism. The first end of the gas spring is used to connect to the housing of the opening and closing mechanism. The gas spring mounting structure includes: a first support member with a first end face and a first hole in the first end face; a second support member with a second end face and a second hole corresponding to the first hole in the second end face; and a first threaded fastener, which is embedded in the second support member and the first support member through the second hole and the first hole to realize the disassembly and locking of the first support member and the second support member. The first threaded fastener is used to reduce the gap between the second support member and the first support member during the locking process, thereby gradually pre-tightening the gas spring. Furthermore, due to the existence of the gas spring mounting structure, no additional gas spring mounting fixture is required, avoiding the influence of the superposition of the tolerances of the fixture and the gas spring on the installation accuracy.

The utility model discloses a miniature light-weight seat backrest lock which comprises a metal lock box, a protective cover is installed on the surface of the metal lock box, positioning bolts are rotatably installed on the two sides of the protective cover, a first lock plate is rotatably installed on one side of the interior of the metal lock box, a second lock plate is rotatably installed on the other side of the interior of the metal lock box, and a locking groove is formed in one side of the metal lock box. A first limiting groove is formed in one side of the locking groove, a first extrusion part is arranged on one side of the first limiting groove, a second limiting groove is formed in one side of the second locking piece, and a second extrusion part is arranged on one side of the second limiting groove. The backrest lock has the advantages that through mutual transmission between the first locking plate and the second locking plate, after rotation, the side surface of the first extrusion part can be matched with the second limiting groove, the side surface of the second extrusion part can be matched with the first limiting groove, free opening and closing of the backrest lock are achieved, and the backrest lock is simple, compact, easy to operate and high in practicability. And not only is the assembly complexity in the manufacturing process reduced, but also the material cost and the production cost are effectively reduced.

The invention belongs to the technical field of optical devices, and discloses a high-polarization dustproof plate for a vehicle-mounted HUD (Head Up Display) and a preparation method of the high-polarization dustproof plate. The polarization dustproof plate comprises a polarization element sub-layer, a first optical compensation layer and a second optical compensation layer, wherein the polarization element sub-layer is clamped between the first optical compensation layer and the second optical compensation layer; wherein the first optical compensation layer and the second optical compensation layer are both polycarbonate films, and the compensation value Re of the polycarbonate films meets the following relational expression: Re < = 50nm or Re > = 3000nm; the polarizer layer is a polyvinyl alcohol polarizing film, and the degree of polarization of the polyvinyl alcohol polarizing film is larger than or equal to 99%. The optical compensation layers with low compensation value or high compensation value functions are arranged on the two sides of the polarization element sub-layer, and the polarization element sub-layer with high polarization degree is adopted, so that the problems of rainbow lines and ghosting are solved, glare and reflection are reduced, the display definition is improved, and the application requirement of large-size HUD projection display can be met.

The utility model discloses a highly integrated electric pump, relates to the technical field of water pumps, and solves the technical problems that a traditional water pump is high in energy consumption, large and heavy in body, easy to leak and inconvenient to maintain, the highly integrated electric pump comprises an outer shell body, a shell cover, motors and an impeller, the two motors are symmetrically installed in the outer shell, and hollow shafts of the two motors accurately correspond to opening ring positions at the two ends of the impeller. A stable driving structure is formed through tight connection, and sealing treatment is conducted through the shell cover, so that the safety and stability of operation of the electric pump are effectively guaranteed; the simplified design of the utility model not only reduces the cost, but also improves the maintainability and reliability of the system; the highly integrated electric pump design is particularly suitable for occasions requiring high reliability and low maintenance, the structure is simplified, the size is reduced, and the operation stability is remarkably improved.

The utility model provides a kind of container handle, including snap ring and handle ring, wherein, handle ring is U-shaped, handle ring includes handle handle and two handle arms formed by the extension of handle handle two ends;Two handle arms are connected at the two sides of snap ring respectively, the handle handle includes outer hand holding part and inner hand holding part, the outer hand holding part is flat plate, the inner hand holding part is the convex portion that wave shape is formed upwards along the inner edge of outer hand holding part, the longitudinal section of the inner hand holding part is arc side, the longitudinal section of outer hand holding part is flat plate face.The handle provided by the utility model solves the technical problems such as hand strangling, easy to slip of existing handle, and the mold for preparing handle does not need to make sliding block, reduces manufacturing cost.

This invention provides a piezoelectrically driven pipe wall crawling robot and its control method, including an arc-shaped annular piezoelectric vibrator. The arc-shaped annular piezoelectric vibrator is a symmetrical, slightly curved annular structure. Two sliding drive teeth are arranged on the outer side of the annular segment, and crawling drive teeth are arranged at both ends on the inner side. Four arc-shaped annular piezoelectric ceramic plates are arranged on each of the upper and lower sides of the annular segment. The polarization direction of the eight arc-shaped annular piezoelectric ceramic plates is along the thickness direction and points to the same side. It also includes an arc-shaped annular slide rail, which is a semi-circular annular structure with a central angle of 180°. The sliding drive teeth of the arc-shaped annular piezoelectric vibrator are in close contact with the inner side of the arc-shaped annular slide rail. This invention simultaneously solves the problems that existing piezoelectrically driven robots are mostly focused on planar precision motion and micro-nano manipulation, and cannot adapt to the needs of curved pipe wall crawling, high-altitude hovering, energy-saving self-locking, and miniaturized high-efficiency operation.

The application discloses a totally-enclosed screw compressor, which comprises a tank body, a flange, a motor and a compression assembly, an oil inlet interface is arranged on the side wall of the tank body, the flange is fixedly connected to the inner circumferential wall of the tank body, the flange is provided with a mounting hole, the mounting hole is arranged in correspondence with the oil inlet interface, the motor and the compression assembly are both mounted in the tank body, the compression assembly comprises a casing and a screw assembly, the screw assembly is mounted in the casing, the motor is connected with the screw assembly and drives the screw assembly to rotate, a connecting part is arranged on the casing, the connecting part is connected with the flange through bolts to realize the fixation of the casing, a sealing element is arranged between the connecting part and the flange, and the motor is eccentrically arranged on one side close to the mounting hole. The application can avoid misplacement or deviation during installation, so that the installation personnel can more quickly and accurately align the mounting hole with the oil inlet interface, the alignment during installation is facilitated, the precision during the assembly of parts can be improved, the convenience and reliability during the installation process are improved, misassembly is prevented, and time is saved.

The utility model discloses a kind of assembly type floor foot of screw lifting adjustment, including support base, screw lifting assembly and panel support seat, the support base is the hollow columnar structure of top opening, its inner wall is equipped with first internal thread;The screw lifting assembly includes lifting screw and locking sleeve, the bottom end outer wall of the lifting screw is equipped with the first external thread compatible with the first internal thread, the lifting screw is engaged in the hollow cavity of the support base by the first internal thread and first external thread, the locking sleeve is sleeved on lifting screw outer, the panel support seat is connected in lifting screw top portion. The utility model belongs to engineering construction technical field, specifically refers to a kind of assembly type floor foot of screw lifting adjustment.

The embodiment of the invention discloses a relay state detection and interlocking protection circuit and a relay detection method, belongs to the technical field of relay state detection, and solves the problems that in the prior art, independent reference points are generally arranged in front of and behind a main negative relay respectively, and detection is realized by matching with a sampling resistor; and the internal space of the controller is compact, and wire harnesses and connecting nodes are added at double reference points, so that the fault risk is relatively high. Comprising a main negative relay, two ends of which are connected in parallel with a first sampling resistor set, and one end of the main negative relay is connected to a reference ground of a circuit; a second sampling resistor set and a third sampling resistor set are respectively arranged between the two ends of the main positive relay and the main negative relay; and the detection module is connected to the reference ground and is used for responding to different detection instructions and acquiring parameter values of different sampling resistor sets so as to perform detection and interlocking protection on the main negative relay and the main positive relay according to the parameter values.

This utility model relates to the field of vehicle technology, providing a vehicle battery rack and a vehicle. The vehicle battery rack includes a first frame for mounting a fuel cell and a second frame for mounting a power battery, as well as multiple connecting beams connecting the first frame and the second frame. At least one first mounting sub-beam connected to the vehicle frame is provided on the inner side frame of the first frame, and multiple first locking brackets for connecting to the vehicle frame are provided on the top surface of both ends and / or the middle of the first frame. At least one second mounting sub-beam connected to the vehicle frame is provided on the inner side frame of the second frame, and multiple second locking brackets for connecting to the vehicle frame are provided on the top surface of both ends and / or the middle of the second frame. The integrated design reduces the overall weight and the number of locking points, thereby reducing assembly complexity. Furthermore, the integrated structure, except for the mounting points and some technically required points, is formed by welding, allowing for better control of the dimensions of the mounting points through tooling, thus improving assembly accuracy.

The utility model provides a foam generating device and cleaning equipment. The foam generating device comprises a foaming assembly and a connecting piece fixedly arranged on the foaming assembly. The foaming assembly is provided with a foaming cavity, an inlet part communicated with the foaming cavity and an outlet part communicated with the foaming cavity. The connecting piece is provided with at least three joints, and the at least three joints comprise a first joint communicated with the inlet part in a sealing manner, and a second joint and a third joint which are respectively communicated with the first joint. According to the foam generating device provided by the invention, a connecting pipeline mounted on the cleaning equipment can be simplified, the mounting efficiency is improved, and the assembly space is saved.

The utility model relates to a kind of connecting structure of brake master cylinder body and liquid storage tank, belong to the brake master cylinder of automobile brake system technical field area with liquid storage tank assembly.Liquid storage tank is directly installed on the oil inlet of main cylinder by oil outlet, and the two clamping claws of the bottom of liquid storage tank are respectively connected with the both ends of pin on main cylinder body.Optimal feature is novel structure, cancels fixed screw, pin is directly cast on main cylinder blank, directly connected with liquid storage tank, pin is integrally formed with main cylinder body, can reduce the number of parts, reduce assembly complexity, high connection strength, good connection sealing, enhance anti-vibration capacity, avoid the risk of brake failure caused by screw loosening, can guarantee vehicle safety performance, reduce cost, improve production efficiency.

The utility model discloses an oiling machine shell installation structure which mainly solves the problems that when an existing oiling machine shell is installed, operation is complex, and efficiency is low. The L-shaped mounting plate is correspondingly fixed on the surface of an oiling machine framework plate in the axial direction of a machine shell, one end of the machine shell is correspondingly limited, embedded and inserted into the plate wall of the mounting plate on the outer side of the mounting plate in the direction parallel to the oiling machine framework plate, and the other end of the machine shell is limited and fixed by a tensioning piece in the direction perpendicular to the oiling machine framework plate; one side of the oiling machine shell is fixed through embedding and inserting matching of the hook plate and the mounting plate, and the other side of the oiling machine shell is pulled, limited and fixed through the tensioning piece, so that the oiling machine shell can be stably mounted under external force and vibration, the problems of loosening and the like are avoided, and meanwhile, hidden mounting without bolts on the surface of the oiling machine shell can be realized.

The heavy hinge with the angle measuring function comprises a first hinge body, a second hinge body and a rotating shaft connected with the first hinge body and the second hinge body, the rotating shaft is rotationally assembled with the first hinge body and fixedly assembled with the second hinge body, and at least one end of the rotating shaft is provided with a split encoder; a main body of the split type encoder is fixedly connected with the first hinge, and an inductive head of the split type encoder is coaxial with the rotating shaft and fixedly connected with the rotating shaft. According to the structural design, additional independent sensor installation space and structure are omitted, the structure is compact and integrated, meanwhile, a direct mechanical transmission path is adopted, back clearance, abrasion or errors possibly caused by middle transmission links (such as gears and connecting rods) are avoided, and the reliability of the sensor is improved. Therefore, the reliability, accuracy and long-term stability of angle measurement are remarkably improved while the overall structure is simplified and the assembly complexity is reduced.

The utility model discloses a kind of key structure, intelligent mainframe and intelligent wearing equipment, the key structure, including: crossbeam;Key, set in the side of the crossbeam;Fixed column, set in the side of the crossbeam away from the key, the fixed column is used to connect reset piece;Two fixed ears, set in the top of the crossbeam both ends;Buckle piece, set in the bottom of the crossbeam;Two connecting frames, two the connecting frame is respectively connected with the intelligent mainframe by connecting piece, each the connecting frame is provided with pin hole, for through pin shaft and corresponding the fixed ear rotation connection;The crossbeam, the key, the fixed column, two the fixed ear, the buckle piece integrally setting is provided in the utility model, reduce the number of parts, reduce production and assembly cost, integral forming promotes mechanical strength, avoid the component loosening or fracture caused by frequent operation, can also be applicable to different intelligent mainframe.

The utility model discloses a power device of a stirrer, which comprises a motor, a belt transmission component and a gear transmission component, the motor is arranged in an inner cavity of a box body, the motor is provided with an output shaft, and the output shaft extends out from the inside of the box body to the outside; the belt transmission assembly comprises a first belt wheel, a second belt wheel and a transmission belt, the first belt wheel is coaxially connected with the output shaft, the second belt wheel is coaxially connected with the first transmission shaft, and the transmission belt is in transmission connection with the first belt wheel and the second belt wheel; the gear transmission assembly comprises an inner gear ring, a driving gear and a driven gear, the inner gear ring is fixed to the box body, the inner gear ring and the driving gear are coaxially and rotatably arranged, the driving gear is coaxially connected with the first transmission shaft, the driven gear is meshed with the driving gear and the inner side of the inner gear ring, and the driven gear is in transmission connection with the stirrer. The structure of the power device can be simplified, the size is reduced, and the assembly efficiency is improved.

This utility model discloses a steering gear and a toothed plate type steering limit structure, including a reduction housing and an output shaft. The reduction housing has an extension with a groove. A toothed plate is slidably disposed within the groove. One end of the output shaft is connected to an input shaft, and the other end of the output shaft rotatably passes through the reduction housing and corresponds to the groove. The portion of the output shaft extending out of the reduction housing has teeth that mesh with the toothed plate. The groove has a first end and a second end. The toothed plate abuts against either the first or second end under the drive of the output shaft. The input shaft is connected to a steering wheel, which drives the output shaft to rotate via the steering column. When the steering wheel rotates, the rotational motion of the output shaft is converted into linear motion of the toothed plate through the meshing of the teeth and the toothed plate. The toothed plate abuts against both ends of the groove to achieve hard limiting. Compared with the prior art, this design simplifies the steering limit structure and reduces assembly complexity.

The utility model relates to a wire arrangement structure used in a joint motor module, comprising a motor assembly, a controller assembly and a harmonic reducer, the motor assembly comprises a housing, a stator assembly and a rotor assembly, the controller assembly comprises a controller buckle cover and a circuit board A, the controller buckle cover is fixed with one end of the housing, and the circuit board A is fixed with the other end of the housing. A mounting cavity is formed between the controller buckling cover and the shell, the circuit board A is fixed in the mounting cavity, a wiring terminal is arranged on the circuit board A, a wire passing hole is further formed in the position, corresponding to the wiring terminal, of the controller buckling cover, a power supply and signal wire harness is connected with the wiring terminal through the wire passing hole, and a wiring cover is further fixed to the wire passing hole. The wiring cover seals the wire passing hole, dust and liquid are prevented from invading the mounting cavity, the wiring cover simplifies the connection process of the power supply and the signal wire harness, and the assembly complexity is reduced.

The utility model discloses a modular installation structure of a leakage protection device, which comprises a shield module, a transmission mechanism, an electromagnetic mechanism and a circuit board, the transmission mechanism is installed in a first installation cavity of the shield module, and the electromagnetic mechanism is installed in a second installation cavity of the shield module. The armature push rod extends and penetrates into the first mounting cavity to be connected with the transmission part, the circuit board is fixed to the shield module through a buckle structure, the transmission mechanism, the electromagnetic mechanism, the mutual inductor module, the circuit board and the driving structure are integrated into a mounting whole through the shield module, redundant structures are reduced through integrated mounting, and the mounting efficiency is improved. Complexity of traditional split type installation is avoided, assembly difficulty is remarkably reduced, assembly efficiency is improved, the electric leakage protection device is suitable for internal layout of the electric leakage protection device with a compact space, through modular integrated design and structural optimization, installation efficiency, operation reliability and maintenance convenience are taken into account, and automatic assembly production of the electric leakage protection device is facilitated.

This utility model relates to a deep-sea LED driver control board with adjustable serial communication, belonging to the field of electronic control technology for deep-sea lighting equipment. It aims to solve the problems of existing deep-sea LED driver control boards being unable to adapt to small dry chambers, having low heat dissipation efficiency, and low integration. The device includes a control board module, a 40mm diameter circular driver board module, and a dry chamber encapsulation and heat dissipation structure. The control board module integrates a main control unit, multi-stage power supply, digital isolation, and RS485 serial communication unit. The circular driver board module integrates a boost driver and a current sampling feedback unit. The two are electrically connected via plug-in terminals. The overall volume is ≤20cm³, making it suitable for small deep-sea dry chambers with an inner diameter of 45mm. The dry chamber encapsulation and heat dissipation structure constructs a complete heat dissipation path from "driver board - heat sink - dry chamber shell - seawater." It features small size, high integration, high heat dissipation efficiency, and high control precision, and can be widely used in lighting systems for various miniature deep-sea exploration equipment.

The utility model discloses a kind of key structure, intelligent mainframe and intelligent wearing equipment, the key structure includes: crossbeam;Key, set in the side of the crossbeam;Fixed column, set in the side of the crossbeam away from the key, the fixed column is used to connect reset member;Two fixed ears, set in the top of the crossbeam both ends, the fixed ear is provided with pin hole, for through pin and intelligent mainframe rotation connection;Buckle, set in the bottom of the crossbeam;The crossbeam, the key, the fixed column, two the fixed ear, the buckle integrally is set. In the utility model, reduce the number of parts, reduce production and assembly cost, integrally formed to improve mechanical strength, avoid the loosening or fracture of component caused by frequent operation.

This utility model belongs to the field of adjustable feet, and in particular, it relates to an integrated lifting foot and its storage rack with a light fixture. Existing adjustable feet typically consist of a fixed base, an external threaded screw, an adjusting block, and an internal threaded cap. The large number of components in an adjustable foot increases assembly complexity. The proposed solution includes a mounting base with a hollow structure and an internal threaded hole at its top. By integrating the mounting base and the adjustable foot, a compact unit is formed: an integrated lifting foot and its storage rack with a light fixture. This design not only reduces the number of components but also lowers assembly complexity. The installation process of the integrated adjustable foot is simple, requiring no complex assembly steps or tools. Furthermore, due to its compact structure and fewer components, maintenance is relatively convenient, reducing installation and maintenance costs and improving work efficiency.

The utility model discloses a pot mouth sealing structure and a pot cover, the pot mouth sealing structure is detachably connected to the pot cover, and the pot mouth sealing structure comprises a cover plate which is detachably connected to the pot cover; the sealing ring is arranged on the outer edge of the cover plate in a sleeving manner; the fixed knob can penetrate through the cover plate to be connected to the pot cover, and the fixed knob can rotate relative to the cover plate. The pot cover is provided with a pressure bearing plate, and a fixing column matched with the fixing rotary knob is arranged on the pressure bearing plate. Through the detachable structure (the cover plate, the sealing ring and the fixed knob), parts are convenient to clean or replace, and the user experience is improved; the rotation function of the fixed knob allows adjustment of sealing pressure to adapt to different pot opening states (such as thermal expansion and cold contraction), and excessive compression or failure of the sealing ring is avoided.

This invention relates to the field of commercial vehicle steering column technology, specifically disclosing an adjustment structure for a commercial vehicle steering column. The structure utilizes an angle adjustment component to drive the steering column body to rotate, and a sliding fit structure between a sliding seat and a sliding groove allows the steering column body to achieve a large rotational stroke under the drive of the angle adjustment component. Specifically, the angle adjustment component employs a lead screw drive structure. A first driving member drives a first lead screw to extend and retract, thereby pushing the steering column body to rotate around its hinge point. Because the first lead screw has a long extension and retraction stroke, and the lever arm between the hinge point of the steering column body and the connection point of the angle adjustment component can be optimized to a shorter distance, a small extension and retraction of the lead screw can be converted into a large angle change. Simultaneously, the longer first lead screw stroke further amplifies the angle adjustment range to adapt to different driving needs and driver maneuverability.

The application relates to a motor double-layer cooling water channel shell based on additive manufacturing and an immersed cooling system, and belongs to the technical field of motor structures and thermal management. The shell comprises, from outside to inside, an inlet and outlet water jacket, a shunt outer water jacket and a shunt inner water jacket which are coaxially arranged in sequence; the inlet and outlet water jacket comprises two annular cavities as liquid inlet channels and liquid outlet channels; a shunt plate is coaxially arranged at the middle part of the shunt outer water jacket, and the shunt plate divides the inner cavity of the shunt outer water jacket into a shunt liquid inlet channel and a shunt liquid outlet channel; the shunt liquid inlet channel is uniformly provided with a layer of drainage holes which are in communication with the liquid inlet channels in the circumferential direction; the shunt liquid outlet channel is provided with another layer of drainage holes which are in communication with the liquid outlet channels in the circumferential direction; the shunt inner water jacket is provided with a plurality of distribution holes in the circumferential direction, and the circumferentially adjacent distribution holes are respectively in communication with the shunt liquid inlet channel and the shunt liquid outlet channel. The application realizes a spatial cross-flow channel network of "axial double-layer + radial layered", realizes precise cooling, and greatly improves the utilization rate of the cooling medium.

The dustproof cover structure comprises a hinge seat and a dustproof cover hinged to the hinge seat, an elastic reset structure enabling the dustproof cover to be in an open state is arranged between the hinge seat and the dustproof cover, an installation cavity is formed in the hinge seat in the axial direction, and an auxiliary positioning mechanism is arranged in the installation cavity in a sliding mode. The auxiliary positioning mechanism comprises a limiting assembly used for positioning the position of the dustproof cover and a driving assembly used for converting the overturning movement of the dustproof cover into the axial movement of the limiting assembly, and an elastic assembly used for supporting the auxiliary positioning mechanism is arranged between the limiting assembly and the bottom wall of the mounting cavity. The limiting assembly is arranged on the outer wall, opposite to the dustproof cover, of the limiting assembly, clamping structures which are matched with each other are correspondingly arranged on the outer wall, opposite to the dustproof cover, of the limiting assembly, and when the dustproof cover is in an open state, the limiting assembly and the dustproof cover are matched in a clamping mode through the clamping structures so that the open state of the dustproof cover can be positioned. Accurate positioning can be achieved when the dustproof cover is opened, accidental closing caused by external force or vibration is avoided, and the use stability is improved.

The utility model relates to the field of testing, in particular to a mold closing device and testing equipment, the mold closing device is used for achieving mold closing of an openable and closable testing seat controlled to move, and the openable and closable testing seat comprises a base and a flip cover which are rotationally connected; the mold closing device comprises a cam plate, the cam plate is provided with a mold closing cam surface, the mold closing cam surface faces the openable test seat, the mold closing cam surface extends in the direction of a mold closing track of the openable test seat, and the mold closing cam surface is provided with a mold closing initial position and a mold closing stop position; at the initial mold closing position, the base and the flip cover of the openable test seat are in an open state; at the mold closing stop position, the base of the openable test seat and the flip cover are in a preset buckling state; and in the process that the openable test seat moves along the mold closing track, the flip cover of the openable test seat is always propped against the mold closing cam surface, so that the flip cover can rotate relative to the base under the action of the mold closing cam surface until the flip cover is propped against the mold closing stop position.