898 results about "Compression device" patented technology

The invention discloses an outboard engine box bearing press-fitting device, and relates to the technical field of bearing mounting equipment, the outboard engine box bearing press-fitting device comprises an equipment underframe, a press-fitting working table is arranged at the upper end of the equipment underframe, a press-fitting bottom plate is mounted at the upper end of the press-fitting working table, and a box press-fitting tray is detachably mounted on the press-fitting bottom plate; a supporting frame is installed at the upper end of the press-fitting working table at the rear portion of the press-fitting bottom plate, an installation frame is installed at the front end of the supporting frame, a servo lifting electric cylinder is installed on the installation frame, a lifting plate is installed at the output end of the servo lifting electric cylinder, a box press-fitting quick-change head is detachably installed at the lower end of the lifting plate, and a press-fitting program operation panel is installed at one end of the installation frame. According to the device, the servo lifting electric cylinder is electrically controlled through the press-fitting program operation panel, the box body press-fitting quick-change head is driven to act, the device can quickly and accurately press a bearing into a crankshaft box body, the box body press-fitting quick-change head can be quickly replaced according to the crankshaft box body of the corresponding model, and the production efficiency is greatly improved.

An adjustable chest compression device that can adjust to accommodate a variety of patient sizes. The chest compression device can include adjustable support legs structured to support the chest compression mechanism at a distance from the base member and adjust to accommodate a patient size. Another adjustable chest compression device can include adjustable legs that can adjust to accommodate different patient sizes, as well as perform the chest compressions using the adjustable legs. An extension, such as a back plate and / or leg extension can be added to a chest compression device to make the chest compression device taller and / or wider to accommodate larger patients.

An electric compressor includes a housing and a compression device. The housing defines an intake volume and a discharge volume. The compression device is a rotary-type compression device configured to compress refrigerant. The compression device includes a piston device including a cylinder and a rolling piston. The cylinder is eccentrically coupled to a drive shaft. The rolling piston has an outer surface in contact with an inner surface of a compression chamber. The rolling piston rotates about the cylinder as the drive shaft and the piston device are rotated by a motor. A vane moveably coupled to the housing and having an end adjacent the compression chamber is biased such that the end of the vane is in contact with the rolling piston as the piston device is rotated by the drive shaft.

The utility model relates to the technical field of bundling machines, and discloses a bundling machine compression device which comprises a machining box, a compression assembly is arranged in an inner cavity of the machining box and comprises two first electric push rods, and the telescopic ends of the two first electric push rods are fixedly connected with side pressing plates. And the top of the processing box is fixedly connected with an L-shaped plate. By arranging the compression assembly, straw can be compressed, the first electric push rod and the side pressing plate are arranged to compress the side edges of the straw, the second electric push rod and the top pressing plate are arranged to compress the top of the straw, comprehensive compression of straw piles is achieved, and the discharging assembly is arranged to discharge the straw piles. According to the straw discharging device, the compressed straw can be discharged conveniently, the two bottom plates can be driven to be unfolded through the arrangement of a motor, a positive and negative threaded rod and a threaded sleeve, and therefore the compressed straw pile can be rapidly discharged, and the processing efficiency is improved.

Fixation guide devices and methods for positioning and inserting an intramedullary nail are disclosed. The fixation guide devices include a frame with a first end and a second end, a compression device removably coupled to the first end of the frame, and the intramedullary nail secured to a nail attachment apparatus of the frame. An intramedullary nail including a body with a fastening end, a closed end, and at least two openings is also disclosed. A compression device includes a compression member, a knob, and a bolt secured in the knob and rotatably engaging the compression member is also disclosed. An alignment guide is disclosed and includes a base member, an alignment member, and a fixation guide. A method of inserting an intramedullary nail into two bones for fixation of the two bones is also disclosed.

The utility model provides an abdominal pressure tourniquet, including an abdominal belt, on which a tightening device is provided, the tightening device adopts a tightening belt, and the tightening belt is provided with Velcro; a pressurizing device is provided on the inner wall of the abdominal belt, and the pressurizing device includes a plurality of air bags arranged at intervals, and a gas diversion structure is provided on the outer surface of the abdominal belt, and all the air bags are connected to the inflation device through the gas diversion structure, and the gas diversion structure can connect all the air bags, or connect one air bag alone. The utility model adopts Velcro provided on the tightening belt, which can quickly fix the abdominal belt on the patient's abdomen; when the inflation device is used to connect one air bag alone through the gas diversion structure, one air bag is inflated alone to locally pressurize the wound, and the pressurized air bag area can be selected according to the wound location; when the amount of abdominal bleeding is large, the inflation device is used to connect all the air bags through the gas diversion structure, and all the air bags can be inflated at the same time to achieve the effect of pressurizing the abdomen as a whole.

The utility model relates to the technical field of blanket processing, in particular to a cut-off mechanism for blanket processing, which can stably pull a blanket by arranging the cut-off mechanism, so that the cut-off effect of the blanket is ensured. Comprising a top plate, four supporting columns, a pulling device, a pressing device, a moving device and a cutting device, the four supporting columns are installed on the left front side, the left rear side, the right front side and the right rear side of the bottom end of the top plate correspondingly, the pulling device is installed on the left side of the top end of the top plate, and the pressing device is installed on the right side of the top end of the top plate; the cutting device is mounted on the moving device, the two first fixing plates are symmetrically mounted on the left side of the top end of the top plate, the first screw is rotatably mounted on the two first fixing plates, the first motor is mounted at the left end of the left first fixing plate, and the output end of the first motor penetrates through the left first fixing plate to be connected with the left end of the first screw. And a threaded hole communicates with the middle side of the bottom of the L-shaped plate.

A method for producing a crimp connection via a handheld pulling and compression device and to a handheld pulling and compression device for carrying out the method. For the handheld pulling and compression device, which enables reliable production of crimp connections, a control unit is provided for controlling the electric motor for adjusting the crimping punch between the crimp position and the open position, and a sensor unit connected to the control unit for monitoring the motor performance data when the crimping punch is adjusted in the direction of the crimp position. The control unit interrupts the adjustment of the crimping punch in the intermediate position when predefined first motor performance data are exceeded and / or undershot, adjusts the crimping punch further in the direction of the crimp position after reactivation and terminates the crimping process when predefined second motor performance data are reached.

The invention discloses an intelligent control method and system for limb pressurization equipment, and relates to the technical field of intelligent control. The current working state of the limb pressurization equipment is determined according to multiple pieces of working data of the limb pressurization equipment; the training report of the target limb is determined according to the current working state of the limb pressurization equipment, the multiple training pressure items and the overall form of the target limb, and the accuracy of the training report of the target limb is improved. Determining a plurality of training features according to the detection of the training report, and determining a pressure curve of the target limb according to the plurality of training features, the pressure condition of the target limb and the age of the user; determining an intelligent control event of the limb pressurization equipment based on the pressure curve of the target limb and the current working state of the limb pressurization equipment, and determining a dynamic early warning system of the limb pressurization equipment according to the intelligent control event, the abnormal signal of the limb pressurization equipment and the current body state of the user, and the accuracy of the dynamic early warning system of the limb pressurization equipment is improved.

The utility model discloses a compression shaping device before spring heat treatment, which relates to the technical field of spring heat treatment, and comprises a base frame, a hydraulic cylinder is fixedly arranged on the inner side of the base frame, a cross bar is fixedly arranged at the end of the output shaft of the hydraulic cylinder, an extrusion plate is fixedly arranged at the end of the cross bar, a mounting frame is fixedly arranged at the end of the top of the base frame away from the hydraulic cylinder, a support plate is fixedly arranged on the side wall of the mounting frame, a plurality of movable holes arranged in a symmetrical manner are opened inside the extrusion plate and the support plate, sleeve rods are arranged in the movable holes, an externally threaded tube is rotatably sleeved on the rod wall of the cross bar, a movable plate is threadedly sleeved on the tube wall of the externally threaded tube, and a connecting plate is fixedly arranged at the end of the sleeve rod. The extrusion plate, movable hole, sleeve rod, cross bar, externally threaded tube, movable plate, connecting plate and push plate provided by the utility model can adjust the spacing between the plurality of sleeve rods according to the width range of the spring to be compressed, thereby improving the versatility of the spring compression device.

The invention provides an intelligent compression device and method for maintaining the internal fistula function of a hemodialysis patient, and belongs to the technical field of intelligent compression. The device comprises a CMUT ultrasonic array, an errhysis sensor, a bioelectricity monitoring module, an infrared temperature sensing array, an AI intelligent decision module, a dynamic pressure adjusting system, an energy field intervention module and a microneedle drug delivery module. Through space-time alignment collection of multi-modal data, dynamic parameter optimization of an AI model and rapid cooperative response of an actuator, the internal fistula compression is spanned from experience dependence to accurate intelligence, and the hemostasis efficiency and the blood vessel protection effect are remarkably improved.

The utility model discloses same-side horizontal overturning garbage compression equipment which comprises a compactor, a fixing frame, a lifting assembly, a supporting platform assembly, an overturning oil cylinder and a placement seat, the compactor is arranged above a foundation pit, the fixing frame and the placement seat are both installed at the bottom in the foundation pit, the placement seat is located under the compactor, and the lifting assembly is arranged on the supporting platform assembly. The fixing frame is arranged on one side of the containing base, the lower end of the lifting assembly is installed at the upper end of the fixing frame, the lower end of the supporting platform assembly is rotatably installed at the upper end of the lifting assembly, the lifting assembly operably drives the supporting platform assembly to move in the vertical direction, and the upper end of the overturning oil cylinder is rotatably connected with the supporting platform assembly. The lower end of the overturning oil cylinder is rotationally connected with the lifting assembly, and the supporting platform assembly is used for bearing the garbage container. Through the application of the same-side horizontal overturning garbage compression equipment, garbage dumping and compaction are completed in a foundation pit, the construction cost is reduced, and the occupied area is reduced.

The utility model discloses a hemostasis compression device which comprises an arc-shaped pressing plate, and an inflation compression assembly used for conducting hemostasis compression on a bleeding position is installed on the surface of the inner periphery of the arc-shaped pressing plate. The hemostasis compression device has the advantages that the arc-shaped pressing plate is pressed on a bleeding position, preposed hemostasis compression can be conducted on the bleeding position by means of the hemostasis lining of the inflation compression assembly, and the arc-shaped pressing plate is fixedly bound to the periphery of the bleeding position through the binding assembly; the hemostasis lining can be further pressurized and pressed at the bleeding position for hemostasis operation in an inflating and pressurizing mode of the inflating and pressing assembly on the inner surface of the arc-shaped pressing plate, front hemostasis pressing and rear inflating and pressurizing hemostasis pressing on the bleeding position are achieved, and the manual operation mode that a nurse and an accompanying person press a hemostasis pad with the hands is replaced. And the working intensity of nurses and accompanying personnel is relieved, and it can be guaranteed that hemostasis operation on the bleeding position is smoothly completed.

The utility model discloses a clamping device for aviation parts processing, relates to the technical field of parts processing, and solves the problem that the horizontal position of the clamping block of the existing device is fixed and cannot be adjusted according to aviation parts of different sizes, thereby reducing practicality. The scheme includes a base, a first rectangular frame is fixedly connected to one side of the upper surface of the base, a first one-way screw rod is rotatably connected to the inside of the first rectangular frame, and a slider is threadedly connected to the inner wall of the first rectangular frame on the outer surface of the first one-way screw rod. When the first adjusting mechanism of the utility model is in operation, the distance between the first clamping mechanism and the second clamping mechanism on both sides can be changed, and can be adjusted according to the length of the aviation parts. When the second adjusting mechanism is in operation, it can drive the corresponding second clamping mechanism to move, and can adjust the distance between adjacent first clamping mechanisms and second clamping mechanisms according to aviation parts of different widths.

The invention relates to the technical field of medical instruments, in particular to a compression device for a hemostatic ball, which comprises a fixing block covering a puncture point on a wrist radial artery, a hemostatic component, a compression component, a compression component and a compression component, and is characterized in that the edges of two sides of the fixing block are provided with fixing bands for being fixed on the wrist; the upper top cover and the lower closing block are arranged in an inner cavity of a fixing block, movable gaps are reserved in the upper portion and the lower portion of the upper top cover, and a plurality of evenly-distributed hemostasis balls are arranged in the movable gaps between the upper top cover and the lower closing block and used for stopping bleeding of a puncture point. The operating mechanism is arranged on the fixing block and used for tightening the hemostasis assembly and the fixing band at the puncture point. A collaborative operation mode is adopted, tightening of the fixing band and compression of the hemostasis assembly are synchronously performed at the position of a wrist radial artery puncture point, the effects of positioning the puncture point and fixing the device are achieved, compression hemostasis is performed according to the specific condition of a patient, the fixing band does not need to be repeatedly operated, and the influence of external force extrusion is reduced.

The utility model discloses an M-shaped oil-free multi-stage supercharging piston type compressor, which comprises two first-stage compression devices, a second-stage compression device and a third-stage compression device, the air output ends of the two first-stage compression devices are connected with a trunk, the output end of the trunk is connected with a first-stage cooler, the output end of the trunk is connected with a second-stage cooler, and the output end of the second-stage cooler is connected with a third-stage cooler. The first-stage cooler is connected with a first-stage gas-liquid separator, the gas outlet end of the first-stage gas-liquid separator is connected with a first guide pipe, the first guide pipe is connected with the gas inlet end of the second-stage compression device, and the gas outlet end of the second-stage compression device is connected with the gas inlet end of the third-stage compression device. By arranging the two first-stage compression devices, the compressed air amount can be effectively increased, and the problems that in the prior art, the compressed air amount is increased by increasing the first-stage compression devices, so that the size of the whole machine is large, and inertia force balancing is not facilitated are solved. Meanwhile, the two first-stage compression devices are matched with the second-stage compression device and the third-stage compression device, so that the inertia force of each stage of compression device is convenient to balance.

Earplug insertion device comprising a magazine suitable for receiving compressible and expandable foam earplugs, a compression device in which a compressible and expandable earplug can be compressed lengthwise, and an earplug delivery device to insert the earplug from the magazine into the compression device and then into the ear canal.

The invention discloses a medical disinfection waste treatment device which can automatically disinfect, crush, compress and transfer medical waste through equipment, reduce the workload of cleaning personnel, reduce the secondary infection risk and facilitate medical waste treatment. The medical disinfection waste treatment device comprises a machine body, a transverse storage cavity is formed in the bottom of the machine body; a vertical disinfection cavity, a crushing cavity, a compression cavity and a discharging cavity are sequentially arranged in the machine body from right to left; a feeding device is arranged on one side of the disinfection cavity; a disinfection and material transfer device is arranged in the disinfection cavity; a crushing device is arranged in the crushing cavity; a compression device is arranged in the compression cavity; the bottom of the compression cavity transversely communicates with the upper end of the discharging cavity. The lower end of the discharging cavity communicates with the transverse storage cavity. By adopting the medical disinfection waste treatment device, the secondary infection risk is reduced, the workload of cleaning personnel is reduced, and unmanned medical waste treatment is realized.

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume. The electric compressor includes integral pressure(s) and / or temperatures sensor(s).

The invention provides compression hemostasis equipment for a cardiac interventional operation, and belongs to the technical field of medical equipment. Comprising a pressing plate, a first hollowed-out groove is slidably connected to the center of the pressing plate, a bolt is in threaded connection with the interior of the first hollowed-out groove, and a pressing pad is fixedly connected to the bottom of the bolt; the adjusting assembly is used for assisting the compression device to be fixed to the body, and the adjusting assembly is connected with the bolt. By arranging the adjusting assembly, the adjusting assembly is arranged at the bottom of the pressing plate, the adjusting assembly not only can extend the width of the compression equipment and conveniently support and fix the wrist so as to achieve the wrist braking effect, but also can change the position and the angle of the adjusting plate by utilizing the adjusting assembly so as to better adapt to the hand characteristics of different crowds; therefore, the compression hemostasis equipment can be fixed more conveniently, and the fixing efficiency of the puncture point compression hemostasis equipment is improved.

The utility model provides gas compression equipment, an air suspension and a vehicle. The gas compression apparatus includes a cylinder and a piston member. The air cylinder comprises a cylinder body and an end cover. The end cover is connected to one end, in the first direction, of the cylinder body and defines a first cavity with the cylinder body. An air outlet is formed in the other end of the cylinder body in the first direction. A first air inlet channel is formed in the end cover. The piston piece is movably connected to the first cavity in the first direction. A first compression chamber and a second compression chamber are defined by the piston piece and the air cylinder. The first compression chamber communicates with the outside of the air cylinder through the first air inlet channel. The second compression chamber is communicated with the air outlet. A ventilation channel is formed in the piston piece. The air duct communicates with the first compression chamber and the second compression chamber. The structure of the piston piece is simplified, and therefore the machining difficulty of the piston piece can be reduced.

The present application relates to the field of battery manufacturing, and provides a compression apparatus and a compression device. The compression apparatus (100) comprises a compression mechanism (10) and a compression tool (20), the compression mechanism (10) comprising a first pressing plate (11) provided with a through hole (111), and a positioning assembly (12) disposed on the first pressing plate (11). The compression tool (20) comprises a second pressing plate (21), and a quick-change connecting member (22) protruding from the second pressing plate (21). The quick-change connecting member (22) can traverse the through hole (111), and the positioning assembly (12) can connect to or release the quick-change connecting member (22). The described compression apparatus (100) can quickly replace the compression tool (20), and is convenient and rapid.

The invention discloses an arterial puncture point compression device after neurological interventional operation, and relates to the technical field of medical instruments, the arterial puncture point compression device comprises a mounting plate, the whole mounting plate is arc-shaped and can be better attached to the limbs of a patient, the bottom of the mounting plate is connected with a bridle, and a compression mechanism is further arranged in the middle of the mounting plate and comprises a downward pressing assembly and a pressing assembly; the mounting plate is rotationally connected; an abutting assembly is further arranged in the downward pressing assembly, and the abutting assembly makes contact with and abuts against the limbs of the patient through the downward pressing assembly to be bent upwards; according to the puncture point compression device, in view of the remarkable defects of an existing puncture point compression device in the aspect of pressure control, an original integrated transmission structure is reconstructed, a split type compression mechanism is innovatively adopted, and the compression mechanism is composed of a transmission assembly located at the upper portion and a pressing assembly located at the lower portion.

The utility model relates to a waste plastic recycling and compressing device, which belongs to the technical field of waste plastic recycling and comprises a recycling mechanism, a compressing mechanism is arranged below the recycling mechanism, and a hydraulic oil cylinder is mounted on one side of the compressing mechanism. The recycling mechanism comprises a feeding box, a feeding hopper is arranged at the top end of the feeding box, two needle rollers rotating oppositely are oppositely arranged below the feeding hopper, the two ends of each needle roller penetrate through the side wall of the feeding box and are rotationally connected with the feeding box, a mesh plate is obliquely arranged below the needle rollers, and the mesh plate is fixedly connected with the inner wall of the feeding box. A liquid collecting box is arranged below the mesh plate, the liquid collecting box is in sliding connection with the feeding box, an opening is formed in the upper portion of the side, close to the mesh plate, of the liquid collecting box, and a liquid outlet is formed in the other side of the liquid collecting box; through the arrangement of the recycling mechanism, waste plastic bottles can be effectively punctured, waste liquid or gas in the waste plastic bottles can be discharged, the punctured waste plastic bottles can be completely compressed, and the recycling and compressing effect of the waste plastic bottles is improved.

The utility model relates to the technical field of compression devices, and provides an anti-offset metal material compression test device which comprises a bottom plate and a support frame, a supporting frame is fixed to the top end of the bottom plate, a compression base is fixed to one side of the supporting frame at the top end of the bottom plate, and clamping structures are evenly arranged at the top end of the compression base. By arranging the clamping structure, in the process of clamping metal materials with different sizes and shapes, different clamping threaded rods are started to enable the clamping blocks to move in the sliding grooves through the convex blocks, and then the multiple sets of clamping blocks are used for clamping and positioning the metal materials; therefore, the purpose that metal materials with different sizes can be conveniently clamped and positioned, so that the metal materials are not prone to deviation in the compression process is achieved.

A medical set for the distraction of vertebral bodies, in particular in the treatment of vertebral body fractures, for use with at least a first and a second holding element (10, 11), wherein each of the holding elements (10, 11) comprises a distal section (12, 13) and a proximal section (14, 15) with a proximal end (16, 17) for receiving a bone anchor (18), in particular a bone screw, wherein the set has at least one compression device (19) which, in use, can be connected to the distal section (12, 13) of each of the first and second holding elements (10, 11) and is designed to change the distance between the distal sections (12, 13) of the first and second holding elements (10, 11), wherein the set has at least one spacer device (20) with a first receiving element (21) and a second receiving element (22),wherein the first receiving element (21) is designed for arrangement on the first holding element (10) corresponding to a shoulder portion (23) of the proximal portion (14) of the first holding element (10) and the second receiving element (22) is designed for arrangement on the second holding element (11) corresponding to a shoulder portion (24) of the proximal portion (15) of the second holding element (11) in order to form a rotational region and / or to induce a rotation of the holding elements (10, 11) about the shoulder portions (23, 24) when the distance between the distal portions (12, 13) of the first and second holding elements (10, 11) changes due to the compression device (19).

A compression device may include, but is not limited to, a threaded body, a sliding element, and a compression element connecting the threaded body and the sliding element. According to one embodiment, upon implantation, the threaded body contacts a first bony fragment and the sliding element contacts to a second bony fragment. In at least one embodiment, upon being engaged, the compression element applies sustained tension to the sliding element and opposing tension to the threaded body, thereby compressing the first bony fragment and the second bony fragment along a plane of contact promoting healing.

The utility model relates to the technical field of pipeline connection, and discloses a self-sealing pipeline connector, including a connecting mechanism and a sealing mechanism, wherein the sealing mechanism is arranged on the inner and outer surfaces of the connecting mechanism, and the sealing mechanism includes a closing unit and an extrusion unit, wherein the closing unit is fixedly connected between the connecting mechanism, and the extrusion unit is threadedly connected to the surfaces of the connecting mechanism and the closing unit. The self-sealing pipeline connector can achieve the fixing and sealing of the pipeline by rotating the extrusion sleeve to squeeze the extrusion sealing rubber, without the need to use external tools or equipment. The locking mechanism achieves a tight fit and sealing between the pipeline and the connector through the combined action of the threaded structure and the clamping device, and is provided with a simple design. The locking mechanism has a compact structure and a small size, and is easy to install and use in a limited space. At the same time, the sealing effect is stable and reliable, which can effectively prevent pipeline leakage and improve the safety of the pipeline system.

The invention belongs to the technical field of hydrogen energy, and particularly relates to an emergency treatment system and method for leakage of a hydrogenation mother station. The system comprises a hydrogen purification device, a compression device and a filling device which are connected in sequence, and matched pipelines, stop valves, regulating valves and pressure and flow detection meters. A plurality of leakage detection units are arranged in an easy-to-leak area, and a control unit is configured. According to the method, the false alarm rate is reduced through multi-sensor cooperative verification; when leakage is confirmed, intelligently judging that the leakage occurs in a purification, compression or filling device area by analyzing a pressure and flow change trend combination mode of an outlet of the purification and compression device; and according to different leakage areas, corresponding interlocking control logics are automatically triggered, and cutting-off, speed-controllable pressure relief and sectional nitrogen replacement procedures are executed. The problems of high false alarm rate, difficulty in leakage positioning, slow response and low replacement efficiency in the prior art are solved, and the safety and the automation level of the hydrogenation mother station are remarkably improved.

The utility model provides a multifunctional hydraulic compression device, which relates to the technical field of compression devices and comprises a moving frame, a support frame, a bottom plate and a first hydraulic cylinder, the support frame is arranged in the moving frame, a lifting control mechanism is arranged on the moving frame, the support frame is connected with the lifting control mechanism, the bottom plate is arranged at the bottom of the support frame, a moving groove is arranged on the bottom plate, and the first hydraulic cylinder is arranged in the moving groove. A feeding and discharging plate is slidably connected into the moving groove, a first hydraulic cylinder is arranged on the lower portion in the supporting frame, and a compression plate is arranged at the output end of the first hydraulic cylinder. By arranging the moving frame, the moving convenience of the device can be improved, the use flexibility is improved, the feeding and discharging plate is slidably connected into the moving groove in the bottom plate, the feeding and discharging plate can be moved out to one side of the moving groove by pulling the feeding and discharging plate to conduct feeding and discharging operation, and the feeding and discharging efficiency is improved. And the safety of the compression operation of the whole expansion object is greatly improved.