62results about How to "Increase the base area" patented technology

The invention belongs to the field of biomass carbon material preparation and particularly discloses a process using date pits to prepare nitrogen-doped porous carbon material and a preparation method of a super-capacitor electrode. The process includes the steps of firstly, preprocessing the date pits; secondly, preparing nitrogen-doped carbon material; thirdly, preparing the nitrogen-doped porous carbon material. The process is characterized in that the date pits are used as the carbon source and mixed with ammonia gas and steam in inert protecting gas, the nitrogen doping reaction is performed during the carbonization process, activated perforation is performed under the effect of activating agent, and the nitrogen-doped porous carbon material with high specific surface area and pore volume is prepared. The preparation method is simple, low in cost, high in preparation efficiency and energy saving. Experiments show that the super-capacitor electrode prepared by the nitrogen-doped porous carbon material has high specific capacitance, ideal pseudo-capacitance and high circulation stability, the performance of the super-capacitor electrode is better than the performance of commercial activated-carbon super-capacitors, and the performance of the nitrogen-doped porous carbon material is better than that of most nitrogen-doped porous carbon materials.

The invention discloses a method for preparing a germanium cathode material on a nickel nanoneedle conical array. The preparation method comprises the following steps: firstly preparing the nickel nanoneedle conical array with a certain height by utilizing a water solution electrodeposition method on a nickel basal body, then preparing a germanium cathode material by utilizing an ionic liquid electrodeposition method in an anaerobic and hydrophobic environment, assembling a battery after carbon spraying treatment, and testing the electrochemical performance of the battery. The ionic liquid electrodeposition method is utilized on the nickel nanoneedle conical array for preparing the germanium cathode material with high specific capacity, long cycle life and high coulombic efficiency; during the ionic liquid electrodeposition process, the current density is low, and prepared germanium films are uniform; moreover, the prepared material comprises nano-sized particles, so that pulverization during the material cyclic process is reduced, the foundation area of the prepared cathode material and the prepared basal body (nickel nanoneedle conical array) is large, the binding force is good, and the preparation method is simple in process and convenient to operate.

A habitation and sleeping module, in an aircraft, for accommodating at least one member of a flight crew, with the module having a first sleeping area. Furthermore, an ascent region is provided for ascending from a lower level into the module, wherein the ascent region includes an ascent device that is laterally arranged on the module.

The present invention discloses a multifunctional computer keyboard device. A rear side at a top cover of the keyboard is provided with a U-shaped groove to emplace a tablet personal computer. A rear side at a bottom cover of the keyboard is provided with two U-shaped brackets. One bracket is turned open to support the tablet personal computer and increase stability thereof, preventing it from falling down due to imbalance. When the keyboard is not in use, the other bracket is turned open to rotate and put the keyboard upside down on a desktop, enabling solution to a trouble that the keyboard occupies a desktop space. The U-shaped brackets can be replaced by a prismatic-shaped audio device, which can increase a length of the keyboard to prevent the personal tablet computer from falling down due to imbalance and can also improve a sound effect of the tablet personal computer.

The invention relates to an insertion combination type recyclable expanding body anchor rod of a high-bearing inner cabin and a construction method and belongs to the technical field of civil engineering. An unbonded steel strand is rewound through a smooth arc-shaped top bearing anchor end to form a double number of steel strands, and after forming through a specially-made steel strand locking device, the steel strands, a locking body and a binding lacing strip are commonly locked to form an insertion locking assembly, and the assembly is connected with a cabin type assembly composed of a bottom fixed pedestal and the like and is fastened through a locking screw and a nut. After the insertion combination type recyclable expanding body anchor rod of the high-bearing inner cabin is sent into a stratum, the high-pressure grouting cabin is unfolded in an expanded mode, a large-diameter high-strength anchor body is formed, and after a supporting function with high anchoring safety is finished, the unbonded steel strand can be recycled efficiently and rapidly and is simple to construct and simple in structure.

The invention discloses a loading machine tire retreading structure. The loading machine tire retreading structure comprises an L-shaped support base, wherein a sleeve, a stand column and a direct current motor are arranged on the L-shaped support base, the sleeve penetrates through the stand column, a gear wheel is arranged at the end part of one end of the sleeve, a pinion matched with the gear wheel is arranged at the output end of the direct current motor, an expanded clamping part is arranged at the end part of the other end of the sleeve, a first cylinder is arranged in the sleeve, a connecting rod is connected at the output end of the first cylinder, a sliding block matched with the expanded clamping part is arranged at the end part of the connecting rod, a trapezoid-shaped slot is formed on a support rod, a bulge is formed on the output end of a second cylinder, the bulge is matched with the trapezoid-shaped slot, the second cylinder is arranged on the stand column, a tool support is arranged at one end of the support rod, a tool is rotationally arranged on the tool support, the motor is arranged in the tool support, the end part of the tool and the output end of the motor are both connected with bevel gears which are matched with each other, and a balancing weight is also arranged at the other end of the support rod.

The invention discloses a porous electric heating recyclable anchorage device combined type component and a construction method using the same, relates to the combined component providing temporary support for rock and soil anchorage engineering and the construction method using the same and aims at providing the porous electric heating recyclable anchorage device combined type component which enables steel strands to be conveniently, efficiently and rapidly recycled and the construction method for recycling the steel strands using the component. The porous electric heating recyclable anchorage device combined type component comprises a first external locking plate and a second locking plate; a first inner core supporting plate and a second inner core supporting plate are arranged between the first external locking plate and the second locking plate; a first electric heating melting high-strength plastic plate and a second electric heating melting high-strength plastic plate are arranged between the first inner core supporting plate and the second inner core supporting plate; a current heating plate is arranged between the first inner core supporting plate and the second inner core supporting plate; the above components are fixedly connected through connecting parts; a clamping device is arranged between the external locking plate and the inner core supporting plate; springs sleeve two ends of the connecting parts; a lead is connected to the current heating plate.

Disclosed is a method for processing horizontal pipe jacking foundation, which adopts the measures of digging well, determining the jacking points of the pipe jacking and the axes of the pipe jacking, installing guide rails, selecting oil cylinders, grouting, detecting, etc. The method has the advantages that: when the construction of the upper structure is finished and the surrounding buildings are too dense to have the conditions of construction sites, the horizontal pipe jacking method can be adopted to avoid the disadvantages. The method implants steel pipes with high deformation modulus on the basis of the existing buildings to form a horizontal enhanced body and ensures that the soil and the reinforcement materials are integrated by making use of the friction force generated between the foundation soil and the tie bars (steel pipes) so as to reduce global deformation and enhance overall stability; meanwhile, cantilever parts at the two ends can extend the foundation area of buildings and reduce basement additional pressure. A composite foundation is formed by pressure grouting towards the surrounding foundation soil by the steel pipes implanted, thereby improving the bearing capacity of the foundation soil, reducing the compression deformation of the foundation soil and fulfilling the purpose of improving the performance of the foundation soil under the basement.

The invention discloses a high-strength base for a lifting machine. The high-strength base is used for supporting a lifting machine body and comprises a transverse beam and support tubes, wherein the transverse beam is fixedly arranged on the ground through expansion bolts; the top ends of the support tubes are horizontally arranged and are vertically installed on the transverse beam; external side reinforcing tubes are respectively arranged at the external sides of the support tubes; internal side reinforcing tubes are arranged at the corresponding positions of the internal sides of the support tubes. The high-strength base for the lifting machine is simple in structure; the reinforcing tubes are respectively and additionally arranged at the internal and external sides of the support tubes, thus safety of the base is effectively improved and practical stability of the lifting machine is improved.

A foundation module is described. The foundation module is utilized in an apparatus, e.g. a projector or the like, that requires a stable working condition. The foundation module includes a base, a wing support, and a linkage. The wing support horizontally extends out of the base to support the apparatus with the operation of the linkage. The wing support can automatically extend from the base to increase the supporting area for the apparatus to work more stable when the apparatus is operating. The wing support can be stored in the base to save the space of the apparatus.

The invention discloses a desktop computer case, which comprises a case, a fan group, a detection device and a refrigeration device, wherein the case is a rectangular case body which comprises a front plate, a rear plate, a top plate, a bottom plate and one pair of side plates; the front plate is provided with a plurality of first air holes; the fan group, a dust screen, a splitter plate, a mainboard fixing plate and one pair of flow baffles are successively arranged in the case; the fan group comprises a first fan and a second fan; airflow blown from the fan group passes through the splitter plate via the dust screen to cool a mainboard fixed on the mainboard fixing plate, passes through a gap between the mainboard fixing plate and the bottom plate, passes through the gap between one pair of baffles and is discharged from the front plate; the detection device comprises a temperature sensor, a moisture sensor, a first single chip microcomputer and a second single chip microcomputer; and the refrigeration device comprises a low-temperature cold air device and one pair of gas pipelines, wherein the low-temperature cold air device is electrically connected with the first single chip microcomputer. The desktop computer case can quickly and intelligently cool the mainboard of the computer and is especially suitable for cooling the mainboard of a mainframe computer.

The invention discloses a photo-catalytic reactor and a preparation method thereof, based on a three-dimensional cylindrical hierarchical structure array. Fiber cores are arranged on a glass base at 250 or 375 micros distance, one end of each of the fiber core is fixed by PDMS glue to form a first-layer fiber core array; a second-layer fiber core array is prepared in the same way in a direction perpendicular to the first-layer fiber core array; a third-layer fiber core array is prepared in the same way in a direction perpendicular to the second-layer fiber core array; ZNO nanowires are synthetized on the basis of an immersion method on the second-layer fiber core array and the third-layer fiber core array and a three-dimensional fiber core array, and the three-dimensional cylindrical hierarchical structure array with definite number of layers and pitch and controllable surface appearance and photocatalytic performance is obtained finally. The preparation method is low in manufacturing cost, simple and convenient to operate, remarkably increases the base area, and ensures the precision of the fiber core array. The ZNO nanowire film is synthetized on the surface of the three-dimensional fiber core array to obtain the three-dimensional cylindrical hierarchical structure array, and the surface area of the catalyst is further increased.

The invention discloses a flat roll packaging machine, and relates to the field of tissue packaging machines. The flat roll packaging machine comprises conveying devices, a film conveying device, a bag opening and supporting device, a package pushing device and a negative pressure forming device and further comprises flattening devices and a laminating device. The conveying devices comprise the first conveying device, the second conveying device and the third conveying device. The laminating device comprises a first pushing platform and a second pushing platform, the first pushing platform and the second pushing platform are provided with pushing air cylinders respectively, and the first pushing platform and the second pushing platform are arranged on the two sides of the first conveying device respectively. According to the flat roll packaging machine, flattening is conducted on a paper roll twice, the paper roll is flattened and formedcompletely, the situations of jumping and warping can be avoided, automatic laminating processing can be achieved, laminating packaging is completed automatically, and packaging operation is completed efficiently.

The invention discloses an oblique skirt type suction foundation suitable for a soft soil foundation. The oblique skirt type suction foundation comprises a main bucket, a foundation top plate fixedly connected to the main bucket, and a skirt structure annularly fixed to the outer edge of the foundation top plate. The skirt structure is an oblique skirt structure, and the oblique skirt structure is in a horn shape. The horn-shaped oblique skirt structure is adopted, and when a structure object on the foundation is subjected to horizontal and vertical loads, the foundation area is increased in the vertical direction through a horn-shaped body of the oblique skirt structure, and therefore the vertical bearing force of the foundation is increased. Meanwhile, due to existence of the horn-shaped body of the oblique skirt structure, the uplift bearing force of the foundation is increased. The horn-shaped body of the oblique skirt structure generates the vertical pressure component under the action of the horizontal loads, accordingly, the horizontal bearing force of the foundation is increased, and therefore the vertical bearing force, the uplift bearing force and the horizontal bearing force of the suction foundation can be improved, and the safety coefficient of the suction foundation is improved; and meanwhile, construction is convenient, and the project cost can be reduced.

The invention relates to a novel self-installing four-cylindrical-foundation two-upright wellhead platform which consists of four cylindrical foundations (1), a rectangular cylinder top frame (2), a diagonal bracing system (3), two uprights (4), a deck structure (5) and a waterproof sleeve (7), wherein the rectangular cylinder top frame (2) is formed by a box-shaped beam; the diagonal bracing system (3) is formed by a triangular truss; the two uprights (4) are vertically arranged at two opposite midpoints of the cylinder top frame, which cross the box-shaped beam; the deck structure (5) is supported by the uprights and supports (6); the waterproof sleeve (7) is fixed by the uprights; the platform is divided into upper and lower sections by diagonal bracing system fulcrums of the uprights (4); a lower structure is formed by the lower section, self-floating towing and self-immersion can be implemented; and a deck module is formed by the upper section, so that offshore installation can be implemented by a light lifting appliance. The novel self-installing four-cylindrical-foundation two-upright wellhead platform is characterized by comprising four cylindrical foundations. Compared with a three-cylindrical-foundation platform, the novel self-installing four-cylindrical-foundation two-upright wellhead platform has the advantages that foundation bases of the novel self-installing four-cylindrical-foundation two-upright wellhead platform are bidirectionally symmetrical and the area is increased, and thus, the novel self-installing four-cylindrical-foundation two-upright wellhead platform has strong anti-falling capacity and stability for self-floating towing on the sea.

The invention relates to the air conditioning technique field, in particular to an anti-shake structure used for an indoor unit of a cabinet air conditioner and aims at solving the problem that the cabinet air conditioner often shakes during regulating and conveying process. The technical proposal comprises a cabinet-shaped casing formed by a front casing and a rear casing, air conditioner parts arranged inside the cabinet-shaped casing and a base arranged at the bottom thereof. The invention is characterized in that a V-shaped dovetail groove is arranged on the vertical face at the back part of the base and a stabilizing base provided with a V-shaped dovetail projection on the vertical face is closely inserted into the dovetail groove. The invention has simple structure and greatly enhances the stability of regulating and conveying the indoor unit of the cabinet air conditioner.

The invention discloses an axle protection structure, which comprises an axle, a fixed ring, a protective tube, a filling layer and a connecting flange; One side of the shaft extends axially outward to form a plurality of fixed rods; the fixed rods on the two fixed rings are located on the sides of the two fixed rings away from each other; the connecting flange is sleeved on the axle, and a through hole is opened on the connecting flange , the fixed rod goes through the through hole; the connecting flange is fixed on the fixed ring through the nut threaded with the fixed rod; the protective tube is set on the axle, and the two ends of the protective tube are respectively fixedly connected with the two connecting flanges; Between the outer surface of the axle and the inner surface of the protection cylinder, the filling layer is wear-resistant rubber. The invention can slow down the loss of driving force of the vehicle after the axle breaks, and prevent the fragments produced by the breakage of the axle from penetrating the fuel tank.

The invention discloses a photo-catalytic reactor and a preparation method thereof, based on a three-dimensional cylindrical hierarchical structure array. Fiber cores are arranged on a glass base at 250 or 375 micros distance, one end of each of the fiber core is fixed by PDMS glue to form a first-layer fiber core array; a second-layer fiber core array is prepared in the same way in a direction perpendicular to the first-layer fiber core array; a third-layer fiber core array is prepared in the same way in a direction perpendicular to the second-layer fiber core array; ZNO nanowires are synthetized on the basis of an immersion method on the second-layer fiber core array and the third-layer fiber core array and a three-dimensional fiber core array, and the three-dimensional cylindrical hierarchical structure array with definite number of layers and pitch and controllable surface appearance and photocatalytic performance is obtained finally. The preparation method is low in manufacturing cost, simple and convenient to operate, remarkably increases the base area, and ensures the precision of the fiber core array. The ZNO nanowire film is synthetized on the surface of the three-dimensional fiber core array to obtain the three-dimensional cylindrical hierarchical structure array, and the surface area of the catalyst is further increased.

The invention relates to a guyed tower foundation. The guyed tower foundation comprises a foundation structure and connecting parts, wherein the connecting parts are used for enabling the foundation structure to be connected to guyed towers; the foundation structure comprises a laminated plate and a foundation supporting part which is connected to the laminated plate; the foundation supporting part is a criss-cross supporting part; and holes are formed in the laminated plate and the foundation supporting part. According to the guyed tower foundation, the foundation structure, the multiple factors that construction and transportation are convenient, the bearing capacity can be expanded, multiple stay wires can be used together, the tension and compression functions are universal, and the like can be fully considered, the design is reasonable, the structure is simple, the functions are diversified, and the guyed tower foundation has the advantages of being capable of realizing universalization and module assembly, capable of being prefabricated, convenient to construct, capable of saving the construction time and capable of being repeatedly used.

The invention relates to the field of oral clinical instruments and provides a pair of multifunctional orthodontic auxiliary forceps and a device for orthodontics. The pair of multifunctional orthodontic auxiliary forceps comprise a forcep head, a forcep handle and a forcep tail, wherein the forcep head comprises a first forcep head and a second forcep head; the forcep handle comprises a first forcep handle and a second forcep handle; the forcep tail comprises a first forcep tail and a second forcep tail; two ends of the first forcep handle are respectively connected with the first forcep headand the first forcep tail; two ends of the second forcep handle are respectively connected with the second forcep head and the second forcep tail; the first forcep head is hinged with the second forcep head; one end, which is far away from the first forcep handle, of the first forcep head is bent towards one side, which is close to the second forcep head so as to form a first tip; and one end, which is far away from the second forcep handle, of the second forcep head is bent towards one side, which is close to the first forcep head so as to form a second tip. According to the multifunctionalorthodontic auxiliary forceps, functions of various orthodontic instruments can be fused into a whole, the instrument replacement time is saved, the clinical working efficiency is increased, and the cost and clinical disinfection cleaning workload can be reduced.

The invention discloses a convenient-to-clean sedimentation treatment device for municipal sewage, and relates to the technical field of municipal sewage treatment.The convenient-to-clean sedimentation treatment device comprises a water inlet hopper, a flow guide assembly and a centrifugal sedimentation assembly, a water filtering tank is fixed to the lower portion of the water inlet hopper, a filtering assembly is installed in the water filtering tank, and drainage pipes are fixed to the two sides of the lower portion of the water filtering tank; a water drainage pipe is arranged below the water inlet pipe, a flocculation mixing chamber is installed below the water drainage pipe, a first flocculant layer is arranged on the inner wall of the flocculation mixing chamber, a stirring assembly is installed in the flocculation mixing chamber, the flow guide assembly is fixed below the flocculation mixing chamber, and the flow guide assembly comprises a discharging hopper, a flow guide plate, an outer frame, a second flocculant layer and a water drainage flow channel. According to the sedimentation treatment device convenient to clean and used for municipal sewage, sewage can make full contact with a flocculating agent layer, so that the gravity sedimentation efficiency is improved, centrifugal sedimentation, flocculating sedimentation and gravity sedimentation can be combined, municipal sewage is fully settled, and therefore the good sedimentation treatment effect is achieved.

The invention provides a rubber coated anchor chain, and a preparation method thereof. The rubber coated anchor chain is composed of a anchor chain skeleton prepared from metal and a rubber coating layer; the anchor chain skeleton is of an iron solid structure; the periphery of the anchor chain skeleton is provided with a plurality of strip-shaped grooves; the width of each strip-shaped groove ranges from 3 to 15mm, and the depth ranges from 3 to 9mm; and the anchor chain skeleton is coated by the rubber coating layer. The surface of the anchor chain skeleton is coated with the rubber coatinglayer, so that the anchor chain skeleton can be protected effectively, surface corrosion and damage are avoided, the service life is prolonged, and damages on clamping plates and anchor gears in usingprocess of the rubber coated anchor chain are reduced; the surface of the anchor chain skeleton is provided with the grooves, so that the basic area of the anchor chain skeleton with relative to therubber coating layer is enlarged greatly; the coating firmness of the rubber coating layer on the anchor chain skeleton is increased; and in addition, a resin adhesive layer is adopted, so that the rubber coating layer is glued onto the anchor chain skeleton effectively, and local shedding and swelling are avoided.

The invention belongs to the field of biomass carbon material preparation and particularly discloses a process using date pits to prepare nitrogen-doped porous carbon material and a preparation method of a super-capacitor electrode. The process includes the steps of firstly, preprocessing the date pits; secondly, preparing nitrogen-doped carbon material; thirdly, preparing the nitrogen-doped porous carbon material. The process is characterized in that the date pits are used as the carbon source and mixed with ammonia gas and steam in inert protecting gas, the nitrogen doping reaction is performed during the carbonization process, activated perforation is performed under the effect of activating agent, and the nitrogen-doped porous carbon material with high specific surface area and pore volume is prepared. The preparation method is simple, low in cost, high in preparation efficiency and energy saving. Experiments show that the super-capacitor electrode prepared by the nitrogen-doped porous carbon material has high specific capacitance, ideal pseudo-capacitance and high circulation stability, the performance of the super-capacitor electrode is better than the performance of commercial activated-carbon super-capacitors, and the performance of the nitrogen-doped porous carbon material is better than that of most nitrogen-doped porous carbon materials.

The invention relates to the technical field of display, in particular to an array substrate. The array substrate comprises a glass substrate and frame glues applied onto the glass substrate, whereina first frame-shaped groove body and a second frame-shaped groove body are arranged on the glass substrate, the first frame-shaped groove body is arranged in the inner side of the second frame-shapedgroove body. The cross section of the first frame-shaped groove body and the second frame-shaped groove body are trapezoidal. The trapezoidal lower bottom of the first frame-shaped groove body and thesecond frame-shaped groove body are located on the lower part. A communication part is arranged above the upper bottom region. The upper part of the first frame-shaped groove body and the second frame-shaped groove body are communicated with each other through the communication part. The frame glues are applied onto the glass substrate and filled in the first frame-shaped groove body and the second frame-shaped groove body and the interior of the communication part. The setting of the trapezoidal first frame-shaped groove body and the second frame-shaped groove body increases the contact areaof the frame glues and the glass substrate, and enhances the bonding strength between the frame glues and the glass substrate.

The invention discloses a method for retreading of a loader tyre. Through changing the volume of an expansion clamping part, the method realizes tyre clamping fixation. The end face of the expansion clamping part closely contacts with the inside of tyre bead so that the fixing effect of the tyre in machining processes such as cutting are guaranteed and retreated tyre surface parts having improper shapes and sizes are reduced. When lifting and dropping a cutting tool, a raised part mounted on an output end of a second air cylinder is meshed with a trapezoidal groove of a support bar so that the cutting tool can move in the horizontal direction and the contact area between the cutting tool and the tyre surface can be timely adjusted and thus tyre surface local excessive-polishing is avoided.

The invention discloses a bypass air release quench chamber device. The bypass air release quench chamber device is characterized by comprising a hot air settling chamber and a quench chamber connected with the hot air settling chamber; the hot air settling chamber is provided with a settling channel penetrating through the two ends; and the quench chamber comprises an outer cylinder, an inner cylinder and a volute, the inner cylinder is arranged on the inner side of the outer cylinder, an annular duct is formed between the inner cylinder and the outer cylinder, one end of the outer cylinder is a hot air inlet communicated with an outlet of the settling channel of the hot air settling chamber, the other end of the outer cylinder is connected with the outer wall of the inner cylinder, the end, away from the hot air inlet, of the inner cylinder is a quench chamber outlet, a cold air inlet capable of guiding air into the inner side of the outer cylinder in the tangential direction of theinner wall of the outer cylinder is formed in the outer side of the end, close to the quench chamber outlet, of the outer cylinder, and the volute is communicated with the cold air inlet. The quench chamber device is high in hot flue gas cooling speed, high in cold and hot air mixing efficiency, small in overall structure, convenient to arrange and easy to operate and maintain, coarse sedimentation discharge is reduced, and rapid enrichment of harmful ingredients is facilitated.

The invention discloses a stable camera support for news transmission, which structurally comprises a fixed seat, an operation board, a camera, a support main body, a push rod and a chassis, the fixed seat is connected to the chassis and is connected with the push rod, the push rod and the operation board are arranged on the support main body, the camera is arranged in the support main body, and the camera is arranged in the support main body. A position adjusting device and a supporting handle are arranged on the power assisting body, the position adjusting device and the supporting handle are matched on the binding buckle, when the rubber surrounding pad is pushed and dragged by a push rod and a support hole, due to upward pushing of the push rod, a penetrating claw can be opened along the surface of a force application block through the supporting handle, and the supporting handle is supported on an inner limiting channel; and the retaining ring positioning driving position adjusting device is pressed on the surface of the colloid surrounding pad in an up-and-down reciprocating manner, so that the stereoscopic impression and flatness of the colloid surrounding pad on the surface of the camera are ensured.

A habitation and sleeping module, in an aircraft, for accommodating at least one member of a flight crew, with the module having a first sleeping area. Furthermore, an ascent region is provided for ascending from a lower level into the module, wherein the ascent region includes an ascent device that is laterally arranged on the module.

The invention provides a radial pressing mechanism. The radial pressing mechanism comprises a rotating disc and a pressing part; the pressing part is of a chain structure and comprises chain plates and idler wheels; the chain plates are sequentially articulated; the idler wheels are articulated between the chain plates positioned at the two sides; the two ends of the pressing part are fixed and are arranged at the periphery of the rotating disc; a rope penetrates through the position between the rotating disc and the pressing part; the rope is pressed by the idler wheels so as to make contactwith the rotating disc; when the rotating disc runs on the rope, the rope is used for driving the idler wheels to rotate; the invention also provides a lifting device; the lifting device comprises a frame, the rope, a power mechanism and the radial pressing mechanism; the radial pressing mechanism has the advantages of simple structure, small abrasion, little generated heat, long service life andreliable pressing; and the lifting device comprising the radial pressing mechanism has the advantages of being simple in structure, safe, reliable and long in service life.

The invention discloses a flat roll packaging machine, and relates to the field of tissue packaging machines. The flat roll packaging machine comprises conveying devices, a film conveying device, a bag opening and supporting device, a package pushing device and a negative pressure forming device and further comprises flattening devices and a laminating device. The conveying devices comprise the first conveying device, the second conveying device and the third conveying device. The laminating device comprises a first pushing platform and a second pushing platform, the first pushing platform and the second pushing platform are provided with pushing air cylinders respectively, and the first pushing platform and the second pushing platform are arranged on the two sides of the first conveying device respectively. According to the flat roll packaging machine, flattening is conducted on a paper roll twice, the paper roll is flattened and formedcompletely, the situations of jumping and warping can be avoided, automatic laminating processing can be achieved, laminating packaging is completed automatically, and packaging operation is completed efficiently.