246 results about "Four-bar linkage" patented technology

The invention belongs to the technical field of aircraft structure design, and particularly relates to an aircraft arbitrary space four-bar mechanism parameter optimization method, which comprises the following steps: firstly, determining input conditions or preposed requirements of a four-bar mechanism, secondly, establishing a mathematical model of a four-bar mechanism optimization problem, and then, carrying out derivation and analysis to obtain a four-bar mechanism parameter optimization result. The method comprises the following steps: establishing an analytic expression of parameter variables of the four-bar mechanism and compiling a corresponding calculation program, then carrying out iterative optimization on the parameters of the four-bar mechanism by utilizing an optimization algorithm, and finally outputting an optimization result to obtain an optimal design parameter.

The invention provides a design method of a two-wheeled wheel-legged robot, which relates to the field of wheeled robots, and comprises the following steps: determining a machine body of the two-wheeled wheel-legged robot, adopting a leg four-bar mechanism as a leg configuration, and taking the leg four-bar mechanism and the machine body as a five-bar mechanism together, a universal leg rod length parameter calculation method is deduced based on a planar five-connecting-rod model, key geometric parameters are determined, and robot structure design is completed; establishing a wheel type motion dynamical model and a leg type jump phase motion dynamical model, deducing a universal motor model selection method, calculating driving wheel and joint motor parameters, and completing wheel train design and whole machine motion simulation; carrying out finite element analysis and lightweight design on the key parts; and finally, an LQR control strategy is adopted, and cooperative control verification is completed through analysis and simulation software. Wheeled efficient movement and leg type terrain adaptive capacity are fused, limitation of a single movement mode is broken through, and the environment adaptive boundary of the robot is expanded.

A folding marine cleat can include a base and a cleat head having a detent spring member. The cleat head can be positionable with respect to the base in stowed and deployed positions by a four-bar linkage with first and second legs to transition the cleat head between deployed and stowed positions. The legs can include stowed and deployed flat portions positionable to selectively be in contact with and abutting the detent spring member to retain the cleat head in the stowed or deployed position. The base can include fastener retention slots with opposing opening surfaces and opposing retention surfaces being spaced apart at a distance to receive a square portion of a fastener therebetween to fix the fastener in axial rotation with respect to the cleat base, with the opposing opening surfaces being spaced apart at a distance narrower than a distance across the square portion of the fastener.

A foldable photovoltaic panel module disclosed by the present invention comprises a photovoltaic support, photovoltaic assemblies are hinged to two sides of the bottom of the photovoltaic support, each photovoltaic assembly comprises a plurality of photovoltaic mounting racks, and the plurality of photovoltaic mounting racks are sequentially connected end to end through hinge mechanisms to form a foldable flat plate structure. The photovoltaic mounting frame close to the photovoltaic support is hinged to the bottom of the photovoltaic support and provided with a torsion gear, photovoltaic panels are mounted on the photovoltaic mounting frame, a stepping motor is arranged at the bottom of the photovoltaic support, the output end of the stepping motor is connected with a driving gear, and the driving gear is meshed with the torsion gear. A four-bar mechanism is adopted to achieve unfolding and folding of the photovoltaic panel, a folding mechanism is simple and effective, meanwhile, stepping motor driving and a steel cable winch driving mechanism are jointly used, the torque requirement for the stepping motor is lowered, the overall reliability of the device is improved, and the device is suitable for popularization and application. And the equipment is not easy to damage, long in service life, low in operation and maintenance cost and high in expansibility.

The utility model relates to the technical field of electronic equipment processing, in particular to a printed circuit board clamp which comprises a base, a plurality of fixing units are arranged on the base in a sliding mode, a platform for containing a circuit board is arranged on the fixing units, a clamping unit is further arranged on the base, and the clamping unit comprises a clamping nozzle. The clamping nozzle is used for clamping or supporting a circuit board; the elastic piece and the clamping plate are fixed, and when the clamping mouth is in contact with the circuit board, the deformation of the elastic piece disperses the clamping pressure in a self-adaptive manner, so that local overload is avoided; the clamping unit is linked with a clamping plate through hinge rods at two ends of an adaptive rod to form a four-connecting-rod mechanism, displacement caused by vibration or thermal expansion is counteracted in real time, meanwhile, a lead screw abuts against the lower end face of the circuit board, the supporting height is finely adjusted, bending deformation is corrected, and dual protection of elastic clamping and rigid supporting is formed; the problem of circuit board deformation caused by rigid clamping in the prior art is solved.

The utility model discloses an anti-damage clamp for grinding a thin-wall bearing ring, and relates to the technical field of bearing machining. The bearing clamping device comprises a mounting plate, the mounting plate is mounted on external mobile equipment, two clamping plates are slidably arranged on the inner side of the mounting plate, anti-skid rubber pads are mounted on the inner sides of the clamping plates, the inner sides of the clamping plates are concave, the two clamping plates move in the direction close to each other to clamp a bearing, and a linkage set is mounted on the inner side of the mounting plate. According to the clamping device, the air cylinder drives the rack to linearly advance and synchronously mesh with the missing gears on the two sides to achieve rotary transmission, the first telescopic rod pushes the clamping plates to move oppositely, the anti-skid rubber pads on the inner sides of the concave clamping plates elastically deform when making contact with the thin-wall bearing ring, and concentrated clamping force is evenly dispersed to the contact face of the outer wall of the ring; the four-bar mechanism of the double clamping plates and the second telescopic rod form a redundant stable system, the clamping posture is still kept stable under grinding high-frequency vibration, and it is guaranteed that the ferrule is free of plastic deformation in the whole machining process.

The invention discloses an electric control lifting mechanism of a model pantograph, and effectively solves the problem that an electric control lifting pantograph device of an existing electric locomotive model is poor in appearance simulation degree. Comprising a model pantograph module and an electric control driving module. The model pantograph module comprises a sliding plate model and two four-bar mechanisms which are connected in series, and the sliding plate model can ascend or descend under the control of the electric control driving module; the electric control driving module is arranged at the lower part of the model pantograph module; the electric control driving module drives the sliding plate model to lift by stretching and releasing a rope penetrating through a central hole of a circuit breaker insulator mimic pull rope sleeve; the device is simple in structure, novel in conception, convenient to use and high in practicability.

This invention provides a hood hinge structure and a vehicle. The hood hinge structure includes a connecting seat for connecting to the hood, a fixing seat for mounting on the vehicle body, and a first link and a second link. Both the first link and the second link are hinged between the connecting seat and the fixing seat, forming a four-bar linkage with the connecting seat and the fixing seat. When the hood is closed, viewed from the left-right direction of the vehicle, there is a preset distance, no greater than 10mm, between the intersection point K of the extension lines of the first link and the second link and the rear tip P of the hood. The hood hinge structure of this invention sets the preset distance range between the intersection point K of the extension lines of the first link and the second link and the rear tip P of the hood, ensuring that the movement trajectory of the rear tip P of the hood and the rear tip S of the lower edge of the hood tends to move away from the rear of the hood and fender seam. This prevents the rear tip S of the lower edge of the hood from rotating and overlapping with the fender, thereby helping to avoid paint peeling on the fender.

A lift arrangement (100) for loading and unloading a wheelchair into a compartment of a vehicle such as a bus, truck or train is provided. The lift arrangement comprises a bed configured to accommodate a wheelchair, and an actuating system (20) configured to set the bed (30) between a first position and a second position. The actuating system comprises a main unit (10) having a frame (11) configured to be fastened to the floor (2) or to a wall in the vehicle compartment. The actuating system further comprises a telescopic column (25) comprising a first part (21) and a second part (22) being axially slidingly connected to one another. The first part of the telescopic column is connected to the main unit via two or more link arms (23) in a four-bar linkage (24). The second part of the telescopic column is slidingly connected to the bed (30) such that the bed (30) may be slidingly displaced. The four-bar linkage and the telescopic column are connected to and configured to be actuated by at least one respective hydraulic or pneumatic actuator.

This invention relates to a biomimetic flapping-wing aircraft with variable fuselage attitude, comprising a frame, a motor fixed to the frame, and wings symmetrically arranged on the left and right sides of the frame. The wings include a crank-rocker mechanism hinged to the frame, a four-bar linkage movably passing through the frame, and a flapping rod. The motor drives the crank-rocker mechanism to rotate; the crank-rocker mechanism is connected to the four-bar linkage to drive it in a reciprocating oscillating motion; the flapping rod is fixed to the outside of the four-bar linkage. The wing employs a two-segment flapping mechanism, which helps reduce drag from upward flapping while ensuring lift from downward flapping, improving the overall energy utilization rate. The biomimetic flapping-wing aircraft uses a segmented structure with variable fuselage attitude, making it more agile and biomimetic. It can mimic various basic bird movements, enabling flapping flight, high-altitude emergency stops, and turning maneuvers.

Such a fuel filler flap system with a vehicle-mounted base in its ready-to-use state, and with a fuel filler flap that is movably mounted on the base by means of a four-bar linkage mechanism between a closed position closing a tank recess and an open position releasing the tank recess, and with a drive motor that is coupled to the four-bar linkage mechanism to move the fuel filler flap between the closed position and the open position, is known. According to the invention, a coupling lever is provided which connects a crank arm, which is rotationally fixed to a drive shaft of the drive motor, to the four-bar linkage in a movement-transmitting manner in order to move the four-bar linkage between the closed position and the open position of the fuel filler flap when the drive motor is activated, and the crank arm and the coupling lever can be moved into an over-center position in the closed position of the four-bar linkage, which blocks an opening movement of the four-bar linkage. Use for passenger cars

A kind of farmland soil hardness real-time detection device and detection method, it includes laser ranging sensor, inclination sensor, Beidou satellite template, baffle, four-bar linkage mechanism, soil disc assembly, beam, U type card, counterweight area and beam frame, soil disc assembly is connected with counterweight area, soil disc assembly top is equipped with baffle, soil disc assembly is connected with beam frame by four-bar linkage structure, beam frame one side installs beam, beam is equipped with U type card, beam frame top is equipped with laser ranging sensor, inclination sensor and Beidou satellite template.This farmland soil hardness real-time detection device and detection method combines agricultural machinery ridging, sowing, fertilizing, cultivation and other operations, utilizes the data received by vehicle-mounted computer software system to measure, so that sensor accurately measures the depth of cutting soil disc pressed into soil, to achieve the purpose of detecting soil hardness, reflects the related information such as farmland soil plough layer thickness, soil fertility, improves the detection efficiency of soil hardness.

The utility model belongs to but is not limited to the agricultural machinery technical field, especially relates to a kind of liftable device for flue-cured tobacco dry-wet alternate seedling, mainly by seedling facility unit module, lifting device module and track network system constitute.The seedling facility unit module adopts aluminium alloy perforated backing plate with quick detachable locking mechanism and integrated tooth group locking and double "X" type support of chrome plated light axle direction, and synchronous lifting (precision ±0.5mm) is realized by Φ40mm rigid synchronous shaft linkage.The lifting device module is driven worm wheel elevator by servo motor, and power is transmitted through cross torque distributor and four-bar linkage mechanism.The track network system integrates hydraulic support leg (synchronous precision ±0.2mm) and interference fit track, supports AGV automatic movement operation.The device monitors substrate water and fertilizer state by EC sensor, automatically controls seedling tray and nutrient solution contact-disengagement cycle, realizes accurate dry-wet alternate seedling, effectively improves seedling efficiency and automation level.

The application provides a deformable wing using a telescopic connecting rod mechanism, comprising: a plurality of frames; a plurality of connecting rod mechanisms, each of which is arranged on a frame, each of which comprises a telescopic first connecting rod, a non-telescopic second connecting rod and a connecting rod for connecting the first connecting rod and the second connecting rod; and a plurality of driving devices, each of which has a frame on the upper side and the lower side respectively, and each of which is connected with the first connecting rod in the two corresponding connecting rod mechanisms, so as to control the two first connecting rods to synchronously stretch and retract. The application can realize the length adjustment of the aircraft wing in the wing profile section direction, so as to change the wing profile area and the angle of attack, thereby enabling the aircraft to adjust the lift-drag ratio by controlling the movement of the four connecting rod mechanisms to adjust the wing area and the angle of attack when the lift needs to be adjusted. The application has the advantages of simple structure, stable control, high safety factor and the like.

A combined power intake duct with a translational linkage flow regulation geometry device and its operating method are disclosed. This invention features a wide-range intake flow regulation range. Based on the principles of changing the capture flow and increasing the throat flow capacity for stable intake operation, this invention proposes a linkage flow regulation geometry device involving the translational lip and throat. The geometry device consists of a translational lip, a translational throat, and a four-bar linkage. It can achieve multi-dimensional optimization of intake performance by coordinating and controlling the actual capture flow and throat compression through single-degree-of-freedom adjustment. The geometry device operates in two states during movement: 1) When the four-bar linkage moves backward, the actual capture flow decreases, the ram throat height increases, and the turbine throat height decreases; 2) When the four-bar linkage reaches a certain position and continues to move backward, the actual capture flow decreases, the ram throat height decreases, and the turbine throat height increases.

The utility model discloses a hidden type hinge which comprises a frame fixing plate, a sash fixing rod, a long connecting rod and a positioning rod, the two ends of the long connecting rod and the two ends of the positioning rod are rotationally connected through rivets, and the frame fixing plate, the sash fixing rod, the long connecting rod and the positioning rod are combined to form a four-bar mechanism for opening and closing a sash and a window frame. One end of the frame fixing plate is provided with a wind bracing connecting rod, one end of the wind bracing connecting rod is connected through a rivet, the other end of the wind bracing connecting rod is provided with a sliding block connected through a rivet, and a limiting block used for clamping the sliding block is further arranged between the sliding block and the sash fixing rod. Through the combination of the sliding block and the limiting block, the window can be kept at a fixed position after being opened and cannot swing along with wind, and the overall size is small.

The application belongs to the technical field of humanoid robots, and discloses a modular mechanical thumb finger with the motion characteristics of a human thumb, which comprises a base module, a metacarpal module, a proximal phalanx and a distal phalanx. The base module provides a connecting interface with a palm or an arm robot. The metacarpal module has three active degrees of freedom and is driven by a screw block mechanism to accurately realize opposition, abduction and dumping motions. The proximal phalanx realizes bending motion. The distal phalanx is coupled with the proximal phalanx through a four-bar linkage mechanism and is decoupled through a rocker block mechanism, and has passive adaptive capability. The application highly imitates the motion function of a human thumb, has compact structure, efficient driving, and can stably complete fine opposition and gripping operations. Meanwhile, the modular design facilitates integration, and improves the operability, adaptability and intelligent level of the humanoid dexterous hand.

This invention discloses a flexible cable-driven, fully actuated, anthropomorphic dexterous hand finger mechanism, comprising a base, a first phalanx, a first joint, a second phalanx, a second joint, a third phalanx, a third joint, a fourth phalanx, and a fourth joint. The first phalanx is connected to the base via the first joint; the second phalanx is connected to the first phalanx via the second joint; and the third phalanx is connected to the second phalanx via the third joint. Flexible cable pulley mechanisms are installed at the second and third joints, driving the third phalanx to rotate around the third joint, the second phalanx to rotate around the second joint, and the first phalanx to swing around the first joint. The fourth phalanx is connected to the third phalanx via the fourth joint, and the third phalanx drives the fourth phalanx to rotate around the fourth joint via a four-bar linkage. This invention achieves anthropomorphism and modularity in anthropomorphic dexterous fingers, meeting the requirements for end-effector motor capabilities in dexterous operations.

The embodiment of the utility model provides a towing hook cover assembly and a vehicle, the towing hook cover assembly comprises a cover plate, a connecting rod structure, a mounting bracket and a driving piece, and the connecting rod structure is connected with the cover plate, the mounting bracket and the driving piece; the connecting rod structure, the cover plate and the mounting bracket form at least one four-connecting-rod mechanism; the cover plate has a first position for covering the opening of the towing hook and a second position for exposing the opening of the towing hook, and the connecting rod structure is driven by the driving part to drive the cover plate to move, so that the cover plate is switched between the first position and the second position. In the embodiment of the invention, the cover plate can be driven to move through the driving piece and the connecting rod structure, so that the cover plate is opened without manually pressing or prizing the cover plate, and the operation is simple and convenient.

The invention discloses a low-power-consumption one-way transmission hexapod robot and a foot end track correction method thereof, and belongs to the field of robot design. The problems that an existing robot is high in energy consumption, heavy in structure, complex in control, high in cost, low in reliability and the like are solved. The hip joint, the thigh, the knee joint, the shank and the foot are connected in sequence, the one-way transmission mechanism is used for controlling the gait of the shank, the thigh is a deformable four-bar mechanism, and the one-way transmission mechanism is connected with the thigh and the hip joint; when the hip joint is driven to rotate in the forward direction, the thigh is driven to deform through transmission cooperation of the one-way transmission mechanism, so that the thigh drives the shank to complete the swing action of lifting and falling. When the hip joint is driven to rotate reversely, the one-way transmission mechanism does not transmit motion at the moment, the thighs do not deform any more, and therefore the feet are always kept in the supporting phase of making contact with the ground and stepping on the ground. The system is mainly used for executing tasks such as complex environment exploration, disaster rescue and planet exploration.

The invention discloses an intelligent closestool for helping the aged to get up and a using method thereof, and belongs to the technical field of intelligent homes. The intelligent toilet bowl comprises a toilet bowl body and a base assembly detachably installed on the toilet bowl body, and the base assembly is provided with a cushion assembly, lifting assisting mechanisms symmetrically arranged and armrest assemblies; the lifting assisting mechanism comprises a servo motor, a spiral lead screw and a four-bar mechanism and drives the main cushion to be stably switched between a horizontal bearing state and a forward-leaning lifting state along the arc-shaped guide rail so as to conform to the natural forward moving tendency of the gravity center when the human body gets up, and labor-saving and comfortable auxiliary getting-up is achieved. The additionally arranged electric locking mechanism can achieve rigid locking at any height, and accidental falling is prevented. The system solves the problems of inconvenient installation, lack of man-machine work efficiency optimization and existence of potential safety hazards of the existing elderly-helping equipment, has the characteristics of high integration level, good adaptability, safety and reliability, and is suitable for being popularized and used in families.

The application discloses a device for assisting in carrying luggage with four connecting rod mechanisms, which comprises a carrying platform, a pair of screw driving assemblies, a pair of first crank connecting rod mechanisms and a pair of second crank connecting rod mechanisms symmetrically arranged on both sides of the carrying platform, wherein the screw driving assemblies are fixedly arranged on side plates, two fixed ends of the first and second crank connecting rod mechanisms are rotatably arranged on a bottom plate, output ends of the first and second crank connecting rod mechanisms are rotatably arranged on the carrying platform, a control end of the first crank connecting rod mechanism is rotatably connected with the screw driving assembly, the screw driving assembly is driven to rotate by an external drive, thereby driving the two pairs of four crank connecting rod mechanisms to control the carrying platform to move from the bottom plate to the space outside the bottom plate and the side plate to assist in carrying. The application utilizes the motion and output force of the two sets of driving systems as motion and force input to drive the device to complete the carrying of the luggage in view of the narrow space limitation near a high-speed rail luggage rack.

The application provides a regulating device and a headrest. The regulating device comprises a base, a moving part, a moving mechanism and a locking mechanism. The moving mechanism is composed of a double four-bar linkage mechanism of a first linkage set, a second linkage set and a transmission part, so that the moving part moves relative to the base in at least two directions, and can flexibly switch positions in a plane, and has strong adjusting ability, good mobility and flexibility. The locking mechanism comprises a control assembly, a first locking part and a second locking part. The driving part of the control assembly is arranged on a locking linkage, the first locking part is matched with a first locking part of a passive linkage, and the first and second linkage mechanisms can be locked at the same time. After being locked, a third linkage mechanism similar to a four-bar linkage is formed, and the second locking part is matched with a second locking part, so that the third linkage mechanism can be locked, and the moving part is locked. The locking mechanism has simple structure, ingenious design, simple and fast operation, and good supporting effect after being locked. The headrest comprises the regulating device, so that the headrest has multi-dimensional movement and variable posture to adapt to different needs of different users.

The utility model discloses a mobile energy storage heat exchange vehicle with energy absorption and release functions, and relates to the technical field of heat exchange vehicles, the mobile energy storage heat exchange vehicle comprises a vehicle body and a mobile base, the top of the vehicle body is provided with a protective fence, the top surface of the protective fence is fixedly provided with four support columns, the center of the top surface of the vehicle body is fixedly provided with a hydraulic rod, and the hydraulic rod is fixedly provided with a hydraulic cylinder. The telescopic end of the hydraulic rod is fixedly connected with a transverse plate, two connecting arms are symmetrically and rotationally installed between the transverse plate and the movable base through two universal joints, and side supporting plates are perpendicularly fixed to the two sides of the top face of the vehicle body. According to the movable energy storage heat exchange vehicle with the energy absorption and release functions, the stability of equipment in the lifting process is remarkably improved through precise matching of the traction guide rails and the sliding blocks and combination of auxiliary supporting of the bottom idler wheels; quick response deployment is achieved, one-button type lifting of the heat exchanger is achieved by hydraulically driving the four-connecting-rod mechanism, and the field preparation time is greatly shortened.

The present application relates to a kind of lead storage battery pole plate high-precision weighing and sorting integrated device, belong to the technical field of lead storage battery pole plate production equipment, to solve the low degree of automation, low efficiency, the problem of poor precision existing in the present lead storage battery pole plate weighing and sorting technology.The present application includes pedestal part, human-computer interaction part, weighing and sorting part, belt drive conveying part and control device;Among them, weighing and sorting part is driven by rotating rod power transmission device to make parallel four-bar linkage mechanism consisting of rotating rod and rotating fixed rod carry out fast circumferential motion, can weigh each pole plate by high-precision weight sensor while the pole plate moves along the original conveying direction, while automatically sorting the pole plate according to weight interval, effectively increase the degree of automation, precision and efficiency of pole plate weighing and sorting process;By automatic high-precision pole plate weight measurement and sorting, the performance of lead storage battery can be significantly improved.

The invention relates to a non-stop scraping device for furnace scale of a vitrified micro bubble expansion furnace, which comprises at least two vitrified micro bubble expansion furnaces working synchronously, a scraping mechanism comprises a rack, and a crawling assembly and a scraping assembly are arranged on the rack; the crawling assembly comprises a roller set, the roller set comprises at least three rollers evenly distributed in the circumferential direction of the rack at intervals, each roller is provided with a driving motor, the roller set and the rack are movably assembled through a parallel four-bar mechanism, and a crawling driving mechanism is connected between the roller set and the rack. The scraping assembly comprises a rotating frame, a circumferential driving mechanism is connected between the rotating frame and the rack, and three layers of cleaning structures are sequentially arranged on the rotating frame in the axial direction; each layer of cleaning structure comprises an ejector rod, a beating vibration head, a rotary scraper and a brush are fixed to the outer end of the ejector rod of each layer, and a pushing mechanism which is in push-pull fit with the ejector rod of the same layer so as to eject the ejector rod out to be attached to the inner wall of the vitrified microbead expansion furnace is arranged in the rotating frame. The problems that traditional manual descaling is low in efficiency and large in potential safety hazard are effectively solved.

The utility model discloses a quick connector connecting tool which comprises a male end connector, a female end connector and a U-shaped plate and further comprises a connecting assembly arranged on the U-shaped plate and used for connecting the male end connector and the female end connector, and the connecting assembly comprises two inclined plates which are fixedly connected to one side of the U-shaped plate and are symmetrically arranged. The ends, away from the U-shaped plate, of the two inclined plates are fixedly connected with connecting plates, the two connecting plates are connected with pulling plates through rotating assemblies, the ends, away from the connecting plates, of the two pulling plates are provided with drag hooks, and the side wall of the female end connector is fixedly connected with four pull rods which are symmetrically arranged in pairs. According to the quick connector connecting tool, due to the arrangement of the connecting assembly, on the basis of lever reinforcement and driving of the four-bar mechanism, manual operation force is amplified to overcome high-pressure recoil, and therefore safe, labor-saving and high-compatibility quick connection of a male end connector and a female end connector under the high-pressure working condition is achieved.

Support assemblies, assemblies incorporating support assemblies, and methods for providing and operating support assemblies are disclosed. A support assembly as disclosed herein includes a base interconnected to a platform by first and second crossed four bar linkages. The first crossed four bar linkage occupies a plane that intersects a plane occupied by the second crossed four bar linkage. Each of the links in each of the crossed four bar linkages includes a clearance feature that establishes an open volume around a central axis or center line of the support assembly. Actuators can cause the platform to tilt relative to the base by pivoting one or both of the selected crossed four bar linkages relative to the base. Position sensors can be included determine an amount that the platform is tilted relative to the base.

The utility model discloses a water vapor collecting device of a paper pulp hot press, which comprises a rack and a hot pressing driving rod penetrating through the top of the rack, and the driving rod is axially and slidably connected with a collecting cover provided with a rhombic four-bar mechanism. The middle section of the rhombic four-bar linkage is provided with a pneumatic rod, the top of the rhombic four-bar linkage is hinged to the top wall of the hot press, and the bottom of the rhombic four-bar linkage is fixed to the collecting cover. The pneumatic rod is in linkage with the industrial control board through the reversing valve to control the collecting cover to ascend and descend along with the hot-pressing driving rod, the pneumatic rod shrinks to enable the collecting cover to move upwards to facilitate feeding during hot-pressing ascending, and the collecting cover is attached to a working area and sucks water vapor through the vacuum pump during downward pressing. A threaded rod and a sleeve in the four-connecting-rod mechanism are matched with a rotating connector to achieve length adjustment, a ball and spring pre-pressing structure is arranged between a sliding sleeve and a step rod to ensure sealing performance, and a water collecting groove and a drainage groove are formed in a collecting cover to strengthen the condensation effect.