35results about How to "To achieve the compression effect" patented technology

The invention provides section bar automatic packaging equipment. The section bar automatic packaging equipment comprises a packaging paper feeding mechanism, a section feeding mechanism, a vertical folding mechanism, horizontal folding mechanisms, a packaging mechanism, a clamping and feeding mechanism, a pushing mechanism and a control mechanism, wherein the packaging paper feeding mechanism is used for lifting, pulling out and shearing and paving packaging paper on a platform; the section feeding mechanism is used for transferring and locating a section bar in the middle part of the platform where the packaging paper is paved; the vertical folding mechanism is used for adjusting the side edge separation distance of the packaging paper and bending the side edge of the packaging paper paved on the platform; the horizontal folding mechanisms are used for adjusting the side edge separation distance of the packaging paper and bending the side edge of the packaging paper paved on the platform and then horizontally folding the upper part of the side edge of the packaging paper, so that the packaging paper wrap the end surface of the section bar; the packaging mechanism is used for winding and sealing the packaging paper which wraps the section bar; the clamping and feeding mechanism is used for a reciprocating motion to transfer the section bar wrapped by the packaging paper to the packaging mechanism; and the pushing mechanism is used for compacting the opening of the packaging paper which wraps the end surface of the section bar. The section bar automatic packaging equipment provided by the invention can solve the problems that the efficiency is low and the labor intensity is great due to a manual operation, so that the packaging efficiency and quality of the section bar are improved.

The invention discloses a file conversion method and device and a file transmission system and belongs to the field of file compression. The file conversion method comprises the steps that text contents in target text files are converted into numerical value sequences in a predetermined character encoding mode, wherein numerical values in the numerical value sequences belong to a predetermined color value range interval; the numerical value sequences are divided into a plurality of color n tuples, and each color n tuple contains m adjacent numerical values in the numerical value sequences and is used for indicating the color of one pixel point, wherein n is greater than or equal to 3; target pictures generated according to the color n tuples are stored, and the pixel points in the target pictures are generated according to the color n tuples. A file compression scheme for converting text files into pictures is provided under the situation that a browser does not support an uncompressing algorithm, the compression effect similar to an existing compression algorithm is achieved, accordingly modes of decreasing text file data volume is enriched, and it is ensured that the browser can perform normal display of webpage contents.

The invention discloses an online compression method and device for mass ship AIS track data. The online compression method is a threshold combination algorithm for limiting double factors (synchronous Euclidean distance and steering angle). The method comprises the following steps: taking a water area as a research object, firstly finding historical characteristics of a ship track in a certain water area according to historical AIS data, then carrying out online compression based on a mode of combining change of a motion state with historical characteristic data, and finally constructing shipAIS track data based on kernel density estimation. According to the method, the AIS data can be efficiently compressed, the track feature points of the AIS data can be completely and accurately reserved, efficient management of the AIS data is facilitated, and the information communication efficiency and supervision efficiency between ships are improved.

The invention discloses a channel compression and channel prediction algorithm based on the time domain sparsity of the channel and the Kalman channel prediction model under the FDD large-scale MIMO-OFDM system in the field of 5G communication, solving the problem that the large MIMO-OFDM channel state information (CSI) feedback is too large and the fed back CSI is outdated. According to the invention, when the user equipment (UE) receiving end receives the fed back CSI, the CSI is not fed back directly; instead, the CSI is performed CSI sparse transformation by means of the inverse fast Fourier transform (IFFT); and then the compressed CSI is formed according to the time domain sparsity taps of the channel, therefore, the CSI is compressed to a lower dimension matrix, and the feedback is reduced. Meanwhile, the predicted CSI is obtained through the Kalman filter theory by means of the compressed CSI, therefore, the prediction complexity is reduced, and the problem that the fed back CSI is outdated is overcome.

The invention discloses a medical ampoule bottle ring-cutting and opening device, and relates to the technical field of medical devices. The medical ampoule bottle ring-cutting and opening device comprises a support frame, and the support frame is in transmission connection with a ring-cutting mechanism used for cutting an ampoule bottle through an adjusting mechanism; a sleeve block arranged at the upper part of the ampoule bottle in a sleeving mode is arranged on the support frame; an impact mechanism used for driving the sleeve block to move transversely is installed on the support frame slidably, and a locating mechanism used for transversely locking the sleeve block is arranged on the support frame; and a collecting tank used for containing the upper portion of the ampoule bottle is fixed to the support frame. According to the medical ampoule bottle ring-cutting and opening device, a bearing mechanism can be driven by an arranged servo motor to drive the ampoule bottle to rotate,and the pressing effect of an arc-shaped blade on the ampoule bottle is achieved through adjustment of the arranged ring-cutting mechanism; the ring-cutting effect is achieved in the rotating processof the ampoule bottle; and the sleeve block arranged on the ampoule bottle in the sleeving mode is driven by the arranged impact mechanism to transversely impact so that the opening treatment to the ampoule bottle is achieved, and the upper portion of the ampoule bottle falls into the collecting tank to achieve the collecting effect.

The invention discloses a medical waste disposal device. The medical waste disposal device comprises a compressing block, wherein a working chamber is arranged in the compressing block, a compressingmechanism is arranged in the working chamber and comprises a compressing frame fixed on the rear end wall of the working chamber, a cutoff mechanism is arranged on the upper side of the compressing mechanism and comprises a cross rod, a locating slot is arranged on the rear end wall of the working chamber, a transmission mechanism is arranged on the right side of the cutoff mechanism, and the transmission mechanism comprises a motor fixed on the rear end wall of the working chamber. The medical waste disposal device is easy to operate, medical wastes are put in the medical waste disposal device, small medical wastes directly fall into a compressing cavity, long medical wastes such as disposable infusion tubes are blocked, then the medical waste disposal device cuts off the disposable infusion tubes, the cut-off disposable infusion tubes fall into the compressing cavity, and at the moment, the cut-off disposable infusion tubes are compressed, and a good compressing effect can be reached.

The invention discloses a picture compression method and system, a terminal and a storage medium. The picture compression method comprises the steps: receiving a picture compression triggering request, wherein the picture compression request comprises a compression type, the size of a to-be-compressed picture and / or an application type; selecting a corresponding compression mode for compression according to the compression type, wherein the compression type comprises one or more of sampling rate compression and quality compression, and if the sampling rate compression and the quality compression are both set, the sampling rate compression is firstly carried out and then the quality compression is carried out. According to the picture compression method and system, the terminal and the readable storage medium, sampling rate compression and quality compression or combination of sampling rate compression and quality compression can be carried out according to instructions or requirements, the limitation of a single compression mode is avoided, the advantages of the two modes are brought into full play, different compression is carried out according to different requirements, and thecompression flexibility is improved.

The invention relates to sealing mechanism with a gas exchange preventing function. The sealing mechanism comprises a fixing part (1), a rotating part (2), a bearing block (3), a pressing block (4), a supporting part (5) and a connecting rod (6), wherein the supporting part (5) is fixedly arranged on the rotating part (1); one end of the connecting rod (6) is fixedly connected with the supporting part (5); the other end of the connecting rod (6) is fixedly connected with the stress surface (40) of the pressing block (4); the pressing block (4) comprises lug bosses (41); grooves (30) are formed in the positions, corresponding to the lug bosses (41), of the bearing block (3); connecting parts (7) are formed by connecting the lug bosses (41) and the grooves (30) in a close fit manner; and sealing strips (70) are arranged in the connecting parts (7). By adoption of the sealing mechanism, the joint between a main body and the rotating part can be effectively sealed, so as to prevent the situation that gas passes through the gap between the main body and the rotating part for exchange; the pressure of the pressing block is uniform; and the sealing mechanism is simple to adjust, simple in integral structure and high in heat-insulating performance.

The invention relates to slicing equipment, and particularly relates to efficient herbal medicine slicing equipment for Chinese and western medicine combination department. The invention provides the efficient herbal medicine slicing equipment for the Chinese and western medicine combination department, and the efficient herbal medicine slicing equipment is capable of automatically clamping, discharging and pushing herbal medicines. The efficient herbal medicine slicing equipment for the Chinese and western medicine combination department comprises a bottom plate, supports, a slicing mechanism and a material pushing mechanism, and the four supports are symmetrically arranged on the two sides of the bottom plate; the slicing mechanism is arranged between the tops of the two supports; and the material pushing mechanism is connected among the upper parts of the six supports. According to the efficient herbal medicine slicing equipment, after the herbal medicines are placed on the material pushing mechanism, an air cylinder is started, an air cylinder telescopic rod drives a lower pressing plate to reciprocate up and down, the lower pressing plate moves downwards to drive a slicing knife to move downwards, and a spring is compressed, so that the herbal medicines are sliced by the slicing knife.

The invention relates to punching equipment, in particular to adjustable ceramic tile punching equipment for building materials. According to the adjustable ceramic tile punching equipment for the building materials, automatic punching can be achieved, the work progress is accelerated, and operation is simple and easy to understand. The adjustable ceramic tile punching equipment for the building materials comprises a supporting frame and a downward pressing mechanism, wherein the downward pressing mechanism is arranged between the two sides of the supporting frame; and a conveying mechanism arranged on the supporting frame. According to the ceramic tile punching device, the downward pressing mechanism is arranged, the downward pressing mechanism can operate to conduct downward pressing and punching on ceramic tiles, people can manually adjust components of the downward pressing mechanism, the downward pressing mechanism can conduct punching according to the positions where people want to conduct punching, and the effects of downward pressing, adjusting and punching are achieved; and by arranging a hold-down mechanism, the hold-down mechanism is matched with the downward pressing mechanism, and the downward pressing mechanism operates to drive the hold-down mechanism, so that the hold-down mechanism can press the ceramic tiles, the ceramic tiles can be prevented from moving when the ceramic tiles are punched, and the pressing effect is achieved.

The invention discloses a yarn compressing device for a hosiery knitter. The yarn compressing device comprises bottom plates, wherein a first hydraulic cylinder and a second hydraulic cylinder are respectively fixed on outer walls of tops of the two bottom plates through bolts; a same base is fixed on the outer walls of opposite sides of the two bottom plates through bolts; mounting plates are fixed on extended rods of both the first hydraulic cylinder and the second hydraulic cylinder through bolts; two fixing bearings are fixed on the outer walls of front surfaces of the sides, close to thefirst hydraulic cylinder and the second hydraulic cylinder, of the two mounting plates through bolts; a first rotating shaft and a third rotating shaft are respectively inserted into circumferential inner walls of the two fixing bearings; a first yarn wheel and a third yarn wheel are respectively connected with circumferential outer walls of the first rotating shaft and the third rotating shaft ina sleeving manner. By adopting the yarn compressing device, the compressing efficiency of the overall device is improved, the compressing angle can be adjusted, compressing effects in different directions can be achieved, the practicability of the overall device can be improved, yarns can be kept smooth when being conveyed by the yarn wheels, and blocking situations can be avoided.

The invention relates to the technical field of packaging bag sealing, and discloses an alternated sealing machine. A supporting table and a workbench fixed to the supporting table are included. A plurality of fixing pieces are arranged on the two sides of the workbench, and a pressing strip is fixed between every two adjacent fixing pieces. The fixing pieces are provided with a plurality of groove units. Each groove unit comprises a limiting strip and a plurality of grooves, and the limiting strips and the grooves are detachably connected. A sealing plate is hinged to the workbench and provided with a plurality of hot air units. A heat source communicating with the hot air units is further included. Each hot air unit comprises a plurality of hot air ways, and the hot air ways are internally provided with closing plates which are horizontally in sliding connection with the hot air ways. The alternated sealing machine is simple in structure, packaging bags can be sealed, and the packaging bag deformation probability can be reduced as well.

The invention relates to material digging equipment, in particular to automatic material digging equipment for workshop processing. According to the automatic material digging equipment for workshop machining, materials can be automatically dug out, hands are not hurt, and the labor intensity of workers is reduced. Automatic material digging equipment for workshop machining comprises: a first supporting plate and first supporting frames, wherein the first supporting frames are symmetrically arranged on the first supporting plate; telescopic sleeves which are arranged on the first supporting plate, wherein the inner sides of the telescopic sleeves are connected to the outer sides of the first supporting frames; fixed connecting frames which are symmetrically arranged between the telescopic sleeves on the two sides; a second supporting plate which is arranged between the fixed connecting frames on the two sides; and second supporting frames which are arranged in the middles of the bottoms of the second supporting plates. A pusher is manually pushed to move backwards, and a first spring is compressed, so that a first cylindrical rod is driven to move backwards, and an iron block is pushed to a third supporting plate to achieve the pushing effect.

The invention relates to a rotating pyrolysis furnace. The rotating pyrolysis furnace comprises a pyrolysis furnace body (1), a feeding bin (2), a discharging bin (3) and a bracket (4), wherein both the feeding bin (2) and the discharging bin (3) are arranged on the bracket (4), the pyrolysis furnace body (1) comprises an inlet (101), an inlet rotating piece (102), a working section (103), an outlet rotating piece (104) and an outlet (105), and the discharging bin (3) comprises a discharging bin body (300), a discharging port (301) and a discharging rotating interface (302); the inlet rotating piece (102) extends into the feeding bin (2) via a feeding rotating interface (203) and can rotate around the axis of the feeding rotating interface (203) of the feeding bin (2). A pressing block and a pressed block of the pyrolysis carbonization furnace are connected in the bulge and groove manner and play a sealing role, and compared with plane sealing, cooperation of the bulge and the groove has the better sealing effect.

An embodiment of the present invention provides a local descriptor compression method, the method comprising: selecting one or more local descriptors of a target image; performing multi-level vector quantization on the selected local descriptors according to a preset codebook , quantize the local descriptor into a codeword in the codebook with the closest distance to the selected local descriptor. The embodiment of the present invention also provides a device for compressing local descriptors.

The invention discloses a convolution kernel pruning model compression method and device, which are used in the field of convolutional neural networks, and the processing flow of the convolution kernel pruning model compression method comprises the following steps: firstly, for a use scene, training a convolutional neural network by using a common model training method until convergence; calculating two-dimensional image entropies corresponding to all feature maps in the convolution layer to form a convolution kernel importance array; then pre-cutting the convolution kernel, further observing the performance change of the model, and finally determining whether the convolution kernel is determined to be cut; after all convolutional layers in the model are traversed, ending the process; according to the improved convolution kernel pruning method, the convolution layer of a convolutional neural network is pruned, and a two-dimensional image entropy is put forward to be used as a criterion for importance evaluation of a convolution kernel; according to the method, on the basis of ensuring the performance of the convolutional neural network model, compared with traditional convolution kernel pruning, the convolutional layer is cut to a greater extent, and a greater degree of model compression effect is achieved.

The invention belongs to the technical field of motorcycles or electric vehicles, and particularly relates to a two-wheel hybrid power motorcycle and a one-way transmission mechanism. The motorcycle comprises a rear hub and a coupling shaft. The coupling shaft comprises a movable half shaft and a fixed half shaft, and the movable half shaft and the fixed half shaft are spliced along the same axis and can rotate relatively; the outer end of the movable half shaft is connected with a gasoline power system, and an electric energy power system is installed on the fixed half shaft. The motorcycle further comprises an input gear, a shaft hole is formed in the middle of the input gear, and the outer end of the movable half shaft is installed in the shaft hole; a plurality of wedge-shaped grooves are formed in the peripheral side of the shaft hole, and rollers can roll in the wedge-shaped grooves; a plurality of swing rods are hinged to the side portion of the input gear, the swing rods drive the rollers to move inwards under the action of centrifugal force and are tightly attached to the surface of the movable half shaft, and power transmission between the input gear and the movable half shaft is achieved. Due to the design of the coupling, the rear hub is more convenient to install, and the electric energy power system is arranged on the side portion of the rear hub, so that installation and maintenance are convenient; and the rear hub also has stronger load capacity.

The invention discloses a clamp used for water cutting of a side frame casting of a railway wagon and relates to a clamp. A channel for cutting liquid metal is needed for a feeder head of an existing side frame casting after the casting is finished. Harm is great and the environment is polluted when the feeder head of the side frame casting is cut through a traditional method. Although the defect of the traditional method is overcome by cutting through a high-pressure water jet technique, the side frame casting can not be located stably in a water tank. According to the clamp, the top face of a support base is a three-nail locating face C' matched with the bottom face locating face C of the side frame casting, one side face of a first locating block is two-locating-nail locating face A' matched with the middle side face locating face A of the side frame casting, and the end face, close to a second locating block, of the first locating block is a single-nail locating face B' matched with the middle bottom face locating face B of the side frame casting. A top face D' supporting a flange in an auxiliary mode is matched with the top bottom face D of the side frame casting. The gap between the second locating block and a connection rod is matched with the bottom clamping face E of the side frame casting. The clamp is suitable for the process of cutting of the side frame casting.

The invention provides section bar automatic packaging equipment. The section bar automatic packaging equipment comprises a packaging paper feeding mechanism, a section feeding mechanism, a vertical folding mechanism, horizontal folding mechanisms, a packaging mechanism, a clamping and feeding mechanism, a pushing mechanism and a control mechanism, wherein the packaging paper feeding mechanism is used for lifting, pulling out and shearing and paving packaging paper on a platform; the section feeding mechanism is used for transferring and locating a section bar in the middle part of the platform where the packaging paper is paved; the vertical folding mechanism is used for adjusting the side edge separation distance of the packaging paper and bending the side edge of the packaging paper paved on the platform; the horizontal folding mechanisms are used for adjusting the side edge separation distance of the packaging paper and bending the side edge of the packaging paper paved on the platform and then horizontally folding the upper part of the side edge of the packaging paper, so that the packaging paper wrap the end surface of the section bar; the packaging mechanism is used for winding and sealing the packaging paper which wraps the section bar; the clamping and feeding mechanism is used for a reciprocating motion to transfer the section bar wrapped by the packaging paper to the packaging mechanism; and the pushing mechanism is used for compacting the opening of the packaging paper which wraps the end surface of the section bar. The section bar automatic packaging equipment provided by the invention can solve the problems that the efficiency is low and the labor intensity is great due to a manual operation, so that the packaging efficiency and quality of the section bar are improved.

The invention relates to a pavement water seepage performance detection device. In the prior art, a detection device is poor in sealing effect, manual water supplementing is needed for each time of detection, work efficiency is low, and operation is complex. The invention just aims to solve the above problems in the prior art. According to the technical schemes, the pavement water seepage performance detection device comprises a machine body and a detection device; the detection device comprises a base; a measuring cylinder is arranged in the base; a partition plate is arranged in the measuring cylinder; a water outlet hole is formed in the center of the partition plate; a movable rod with the lower end penetrating through the water outlet hole is arranged in the measuring cylinder; a sealing plate is arranged at the lower end of the movable rod; the diameter of the movable rod is smaller than that of the water outlet hole; a pressing plate is arranged above the measuring cylinder; theupper end of the movable rod penetrates through the top wall of the measuring cylinder and is fixedly connected with the pressing plate; a first spring is connected between the pressing plate and theupper end face of the measuring cylinder; a telescopic oil cylinder is arranged on the machine body; a piston rod of the telescopic oil cylinder is connected with the pressing plate. The device of the invention is compact in structure, convenient to use and accurate and effective in detection.

The invention discloses an online compression method and device for massive ship AIS trajectory data. The online compression method is a threshold combination algorithm that limits two factors (synchronous Euclidean distance and steering angle), and takes waters as the research object. First, for a certain waters, according to The historical AIS data finds the historical characteristics of the ship's trajectory in the area, and then performs online compression based on the combination of the change of the motion state and the historical characteristic data, and finally builds a visual analysis method for the ship's AIS trajectory data based on kernel density estimation. The invention can efficiently compress the AIS data, and relatively complete and accurately retain the feature points of its trajectory, which helps to realize the efficient management of the AIS data, and improves the efficiency of information exchange and supervision among ships.

The invention relates to a rotary pyrolysis furnace which comprises a pyrolysis furnace (1), a feeding cabin (2), a discharging cabin (3), a bracket (4) and a sealing mechanism (5). The rotary sealing mechanism (5) comprises a pressed block (50), a pressing block (51), a supporting piece (52) and a connection rod (6); the pressing block (51) is provided with a first protruding block (511) and a second protruding block (512), and the pressing block (51) is provided with a pressing block lower end face (513); the pressed block (50) is provided with a first groove (501) and a second groove (502), the first protruding block (511) and the second protruding block (512) are connected with the first groove (501) and the second groove (502) in a closely matched mode to form a connection portion (7), and the pressed block (50) is provided with a pressed block lower end face (503); the pressing bock lower end face (513) is located above the pressed block lower end face (503). According to the pyrolysis carbonization furnace, the pressing block (51) and the pressed block (50) are connected through the protruding blocks and the grooves, a sealing function is achieved, and the sealing effect is better.

The invention discloses a file conversion method and device and a file transmission system and belongs to the field of file compression. The file conversion method comprises the steps that text contents in target text files are converted into numerical value sequences in a predetermined character encoding mode, wherein numerical values in the numerical value sequences belong to a predetermined color value range interval; the numerical value sequences are divided into a plurality of color n tuples, and each color n tuple contains m adjacent numerical values in the numerical value sequences and is used for indicating the color of one pixel point, wherein n is greater than or equal to 3; target pictures generated according to the color n tuples are stored, and the pixel points in the target pictures are generated according to the color n tuples. A file compression scheme for converting text files into pictures is provided under the situation that a browser does not support an uncompressing algorithm, the compression effect similar to an existing compression algorithm is achieved, accordingly modes of decreasing text file data volume is enriched, and it is ensured that the browser can perform normal display of webpage contents.

The invention belongs to the technical field of motorcycles or electric vehicles, and particularly relates to a forced linkage type hybrid power motorcycle. A left side bottom fork is formed at a box body of a reduction gearbox. The box body and the right side bottom fork are matched and provided with a rear hub; an input gear is arranged in the reduction gearbox and is connected with a gasoline power system; a plurality of wedge-shaped grooves are formed in the peripheral side of a shaft hole of the input gear, and a roller is arranged in each wedge-shaped groove; the rollers can roll in the wedge-shaped grooves and are tightly attached to the surface of the output shaft, and the power transmission between the input gear and the output shaft is achieved. A high-temperature locking mechanism is mounted on the side part of the input gear; and when the temperature of the high-temperature locking mechanism in the reduction gearbox exceeds a set value, the rollers are driven to lock the output shaft. When the temperature in the reduction gearbox exceeds a set value, the high-temperature locking mechanism is triggered to forcibly lock the input gear and the output shaft, so that power transmission is ensured; therefore, the accidental separation phenomenon of the input gear and the output shaft when the motorcycle runs at a low speed or collides with an obstacle is avoided.

The invention discloses a device capable of preventing medicine from shaking, which comprises a device main body, an external thread, a push plate, a return spring, a hinge, a baffle plate, a gland, a pressure spring and a pressure plate. The invention is simple in structure, convenient and practical, and low in cost. By unscrewing the gland, the medicine to be stored is placed inside the main body of the device, put on the gland, and the effect of compressing the medicine is realized under the action of the pressure spring and the pressure plate. By pushing the push plate, the push plate will take out the medicine that needs to be taken out through the baffle plate. After the medicine is taken out, the push plate is reset under the action of the return spring, and the baffle plate is also reset under the action of the hinge at the same time, so that the expected purpose is achieved. .

The invention provides compression pants suitable for long-term bedridden patients. The compression pants comprise a pants body made of an elastic material, wherein the pants body comprises a waist-hip section and two pant leg sections connected with the waist-hip section, the perineum area of the waist-hip section is provided with a blank open area, a first opening and closing device is arrangedat the praeabdomen area of the waist-hip section, and the tail end of the first opening and closing device is connected with the blank open area; after the first opening and closing device is opened,the waist-hip section is in the open state, after the first opening and closing device is closed, the waist-hip section is in the closed state capable of accommodating the waist and the hip; each pantleg section is provided with a second opening and closing device along the extending direction, after the second opening and closing device is opened, the pant leg section is in the open sheet shape;after the second opening and closing device is closed, the pant leg section is in the shape of a barrel capable of accommodating the leg; the top ends of the second opening and closing devices are connected with the blank open area. With the compression pants suitable for the long-term bedridden patients, the wearing of the bedridden patients is facilitated, and the risk of thrombus and varicosity occurring on the patients is reduced.

The invention relates to welding equipment, and particularly relates to efficient welding equipment for connecting wires for an automobile system. The efficient welding equipment for the connecting wires for the automobile system is easy and convenient to operate, high in welding quality and capable of achieving repeated welding. The efficient welding equipment for the connecting wires for the automobile system comprises a rack, a first auxiliary mechanism, a pressing mechanism and a welding mechanism, and a pushing mechanism is arranged on the rack; the first auxiliary mechanism is arranged at the upper middle part of the rack; the pressing mechanism is arranged at the upper middle part of the rack; and the welding mechanism is arranged on the upper left side of the rack. According to the efficient welding equipment, after a first push plate is pushed to the limit, a first elastic assembly is compressed, so that a second push plate is driven to move reversely, the second push plate pushes the connecting wires to the middle position of the rack, and the pushing effect is achieved.

The invention relates to sealing mechanism with a gas exchange preventing function. The sealing mechanism comprises a fixing part (1), a rotating part (2), a bearing block (3), a pressing block (4), a supporting part (5) and a connecting rod (6), wherein the supporting part (5) is fixedly arranged on the rotating part (1); one end of the connecting rod (6) is fixedly connected with the supporting part (5); the other end of the connecting rod (6) is fixedly connected with the stress surface (40) of the pressing block (4); the pressing block (4) comprises lug bosses (41); grooves (30) are formed in the positions, corresponding to the lug bosses (41), of the bearing block (3); connecting parts (7) are formed by connecting the lug bosses (41) and the grooves (30) in a close fit manner; and sealing strips (70) are arranged in the connecting parts (7). By adoption of the sealing mechanism, the joint between a main body and the rotating part can be effectively sealed, so as to prevent the situation that gas passes through the gap between the main body and the rotating part for exchange; the pressure of the pressing block is uniform; and the sealing mechanism is simple to adjust, simple in integral structure and high in heat-insulating performance.