49results about How to "Block off" patented technology

The present invention is directed toward a method and a system for emergency evacuation of building occupants and to a method for modernisation of an existing building with said system. It refers to a multi-story building (1) having a plurality of floors and with at least one elevator (10) being positionable at selected landings (26) of the floors. Preferably, first means (9) are provided for measuring the number of persons and second means (7) are provided for detecting an emergency condition in the building. At least one control unit (5) is provided for determining or for estimating a number of building occupants in the building, the control unit is defining at least one evacuation zone (13) in the building during the emergency condition. Based on this information, the control unit is defining at least one designated floor (14) in the building during the emergency condition. Then the system evacuates the building occupants with the elevator car and / or a stairway from the evacuation zone to the designated floor.

An apparatus for transferring adhesive material to portions of filter elements that are displaced relative to the apparatus includes a dispenser from which heated adhesive material is discharged, a transfer arrangement that receives discharged adhesive material and transfers the discharged adhesive material to the portions of the elements as they are displaced, and a cooling arrangement. The cooling arrangement cooperates with the transfer arrangement to cool the discharged adhesive material while the adhesive material is carried by the transfer arrangement to the adhesive material receiving portions of the elements. A process by which adhesive material is transferred to adhesive material receiving portions of the filter elements, as well as an air line panel filter produced by that process, are also discussed.

The invention relates to the technical field of printing ink and discloses graphene-based printing ink and a preparation method thereof. The graphene-based printing ink comprises the following components in parts by weight: 30-40 parts of waterborne polyurethane resin, 20-30 parts of modified graphite flakes, 5-10 parts of conductive carbon black, 2-5 parts of a dispersing agent, 1-3 parts of a flatting agent, 1-3 parts of a defoaming agent, 1-3 parts of a silane coupling agent, and 50-60 parts of water. The preparation method comprises the following steps of a) adding the waterborne polyurethane resin, the modified graphite flakes, the dispersing agent and the water into a stirrer for stirring to obtain a premix; and b) adding the conductive carbon black, the silane coupling agent, the flatting agent and the defoaming agent into the premix, and carrying out stirring to obtain the graphene-based printing ink. Graphene of the printing ink has excellent dispersing performance and does not easily generate secondary agglomeration; and silver ions deposited on the surface of the graphene are not prone to fall off from the surface of the graphene by a reduction method, so that the conductivity and conductive stability of the printing ink are improved.

The invention discloses an induction anti-extrusion safety door. The induction anti-extrusion safety door comprises a door frame and a door leaf hinged to the door frame. The door leaf is provided with a door lock handle. An electronic control telescopic structure connected with an electronic control unit is arranged on the upper border of the door frame. The telescopic end of the electronic control telescopic structure faces the door leaf. The induction anti-extrusion safety door further comprises human body induction sensors connected with the electronic control unit. The human body induction sensors are arranged at the positions, on the door lock handle side, of the door leaf, or the human body induction sensors are simultaneously arranged at the positions, on the door lock handle side,of the door leaf and the door frame, or the human body induction sensors are arranged at the positions, on the door leaf hinged side and the door lock handle side, of the door frame and the door leafcorrespondingly. By adopting the induction anti-extrusion safety door, through perception of the human body induction sensors to the human body and cooperation with the electronic control telescopicstructure, the problem that hands are extruded by the door can be effectively avoided, and normal use of the door is not affected.

The invention discloses a novel radian-controllable carrier roller used on a belt conveyor for conveying bulk materials. The novel radian-controllable carrier roller is composed of a carrier roller with an embossed surface, flexible wear-resistant sleeving elements capable of sleeving the carrier roller and easy to assemble and detach, and detachable movable baffles and fastening staple bolts which are arranged at the two ends of the carrier roller. According to the invention, the phenomenon that the bulk materials are liable to fall off from a belt, and the potential safety hazards generated due to that a metal steel wire in the belt is exposed and forms friction with the carrier roller after the belt is broken, are solved; the roller diameter of the carrier roller is effectively reduced; the production and maintenance costs are saved; the service lives of the carrier roller and the belt are prolonged; the shortage of a small contact surface of the original carrier roller is overcome, the transmission efficiency is improved; and meanwhile, the possible phenomenon of slip due to contact between metal and the belt of the conveyor is also improved.

Disclosed are a flashlight and a handle structure thereof. The handle structure is used for limiting a lamp holder unit and a battery cover unit on a barrel. The lamp holder unit comprises a transparent cover provided with a limit groove. The battery cover unit comprises a tail cover. The handle structure comprises a handle, a lamp holder limiting unit and a lamp cover limiting unit. The lamp holder limiting unit arranged at one end of the handle comprises a first limit cover, a first limit pin, and a first return elastic member; the first limit pin penetrates the first limit cover and the barrel; the first return elastic member sleeves a first shank and abuts between a first retaining part of the first shank and the first limit cover. The battery cover limiting unit arranged at the other end of the handle comprises a second limit cover, a limit plate, a second limit pin and a second return elastic member; the limit plate is rotatably connected with the handle and abutted to the bottom of the tail cover; the limit plate is provided with a limit part; the second limit pin penetrates the second limit cover and the handle; the second return elastic member sleeves a second shank. The handle structure has the functions of lifting and preventing the battery cover unit and the lamp holder unit from dropping off.

The invention provides a pulping method for treating waste paper pulp by utilizing neutral cellulase and neutral xylanase. The pulping method comprises the following steps: firstly an air gap of a fiber cell wall is prevented from being closed by adopting the long-chain effect of hexadecyl trimethyl ammonium chloride, and then the waste paper pulp is synergistically treated by using the neutral cellulase and neutral xylanase at the same time, so that multiple measures at the same time, fibers in the waste paper pulp are modified, cutinized fibers in the waste paper pulp basically restore the original swelling capability, the cutinization phenomenon of the fibers is alleviated, the drainage of paper pulp is promoted, paper machine speed is improved, and ring crush strength and folding endurance of finished paper are obviously improved.

The invention belongs to the technical field of electrical cabinets, and particularly relates to a power electrical cabinet. The cabinet comprises a cabinet body and a cabinet door; the cabinet door is mounted on the cabinet body, and a handle is arranged on the cabinet door; a mounting cavity is formed in the cabinet body; a plurality of placing plates are fixedly mounted in the mounting cavity;an electrical element is fixedly mounted on the placing plate; a heat dissipation pipe is fixedly installed on the upper surface of the cabinet body; a storage cavity is formed in the cabinet body; the storage cavity is located above the mounting cavity; a heptafluoropropane fire extinguishing agent is compressed and stored in the storage cavity; the storage cavity is communicated with the mounting cavity through a switch module; after the temperature borne by the switch module exceeds a certain limit, the switch module is automatically started to communicate the mounting cavity with the storage cavity. The cabinet is simple in structure, dust can be effectively prevented from entering the cabinet body, meanwhile, when a fire occurs in the cabinet body, a channel for outside air to enter the cabinet body can be blocked, and oxygen supply of an ignition point in the cabinet body is blocked.

The invention relates to a subway door safety monitoring system based on a video light curtain. The subway door safety monitoring system based on a video light curtain includes a subway door, a control center, a display screen, and gratings installed on both sides of the subway door. The panoramic camera on the top of the subway door and the photosensitive sensor installed on the upper corner of the subway door; the control center includes a positioning system, a comparison system, an opening and closing system and a storage device; the display screen is a high-definition LED display screen, and the The quantity of panoramic camera is 1-2, and described storage device is storage card or storage hard disk, and the situation of each subway door is shown on the described display screen, and contrasting image, the present invention can monitor subway door well, It can prevent the closing of the car door in time when it is abnormal, and can locate it in time, so that the processing is faster, and at the same time, it also improves the transportation efficiency of the subway and further strengthens the safety of the subway ride.

The invention discloses an induction crowding prevention safety door which comprises a door frame and a door sash. A door lock handle is arranged on the door sash, the door frame is provided with an electronic control telescopic structure which is connected with an electronic control unit and vertically arranged, and the telescopic end of the electronic control telescopic structure faces an upperframe body of the door frame. A locking guide rail which extends towards the hinged side of the door sash in an arc-shaped mode is arranged at the position, on the same side as the electronic controltelescopic structure, of he door frame, and the lower surface of the locking guide rail is higher than the top end of the door sash and is provided with a locking structure. The induction crowding prevention safety door further comprises human body induction sensors connected with the electronic control unit. The human body induction sensors are arranged at the position, on the door lock handle side, of the door sash, or the human body induction sensors are simultaneously arranged at the positions, on the door lock side, of the door sash and the door frame, or the positions, on the door sash hinged side and the door lock handle side, of the door frame and the door sash are both provided with the human body induction sensors. The problem the hands are squeezed by the door is solved throughthe induction to human bodies of the human body induction sensors and the cooperation of the electronic telescopic structure and the locking guide rail, and normal using of the door is not influenced.

The invention discloses an adjustable forklift goods protection arm. The adjustable forklift goods protection arm comprises a fixed lifting framework and a sliding lifting framework; a pair of upper assembly blocks and a pair of lower assembly blocks are arranged on vertical beams on the left and right sides of the fixed lifting framework; air pair of upper hydraulic oil cylinders and a pair of lower hydraulic oil cylinders are separately arranged on the upper and lower assembly blocks; upper goods protection arms and lower goods protection arms are arranged on telescopic rods of the upper andlower hydraulic oil cylinders; and the adjustable forklift goods protection arm further comprises upper bidirectional motors and lower bidirectional motors which can drive the upper and lower protection arms to rotate. By adopting the above structure, goods can be clasped at different heights and different widths, so that the goods do not deflect and fall during a conveying process; operation efficiency is very high; the whole structure is simplified and the response speed is high; working performance is stable; controllability is high; effective adjusting according to the widths and heightsof the goods is realized; besides, protection performance is greatly improved, so that the practical application range is wide; manufacturing is convenient; cost is low; and the effect is good.

The invention relates to the technical field of rail transit, and discloses a crossing plate for rail transit, which comprises a shielding window; a shielding door is arranged on the back of the shielding window; a vehicle door is arranged on the back of the shielding door; a rotating column is rotationally connected to the side wall of the shielding window; the crossing plate is connected to the outer side of the rotating column in a sleeving mode; a first limiting groove is formed in the surface of the crossing plate; a pedal is connected into the first limiting groove in a sliding mode, and buffering pads are arranged in gaps of the shielding door and the vehicle door. A conductive sliding block makes contact with a conductive piece by opening the vehicle shielding door, then a crossing plate automatic placement driving device is controlled to start to work, the effect of placing the crossing plate is achieved, and the effect that passengers can get on board quickly and conveniently in need is achieved, and meanwhile, through a touch switch arranged at the bottom of a pedal arranged in the crossing plate, when the passengers exist at the upper end of the pedal, reverse rotation of the driving device is blocked, so that the crossing plate cannot be lifted up to prevent the shielding door from being closed, and the problem of clamping injury caused by the fact that passengers are not boarding is solved.

The invention discloses a display system based on voice real-time transliteration, and relates to the technical field of voice transliteration. According to the technical scheme, the display system ischaracterized by including a main conference unit, a plurality of sub-conference units and a central control unit for connecting the main conference unit and the multiple sub-conference units; the central control unit includes a conference creation module for creating a conference room, a voice acquisition module, a voice real-time transliteration and a projection module; the projection module acquires voice information and text information and transmits the voice information and the text information to the sub-conference units; the central control unit also includes a detection module wherecomparison information is preset and a conference closing module for comparing the detection information with the comparison information to determine whether the conference room is closed or not; andif the detection information is consistent with the comparison information, the sub-conference units are exited from the conference room, and the conference room is closed. By means of the display system, a person is prevented from forgetting to leave the conference room, the CPU memory is reduced, and the burden of computer operation is reduced.

The invention discloses a two-dimensional code based metro shield door safety system. The system includes image collection devices (1) arranged on one ends of platforms and located between a train andmetro shield doors, an image contrast device (2), a platform control device (3) and a memory (4) which are arranged in a platform control room, display devices (5) arranged in the platform control room and / or on the platforms, luminescent plates (6) arranged on the other ends of the platforms, and two-dimensional codes (7) arranged on the luminescent plates (6). The safety system can completely cover the gaps between the train and the metro shield doors, and can timely find foreign matters in the gaps and send alarm signals; and the system realizes the positioning and grading of faults by introducing a rail transit fault monitoring and intelligent early warning system, so that the safety circuit of the shield doors can be timely cut off to prevent the closing of the shield doors and the running of the train, and therefore, the safety of personnel and the normal running of the train can be maximumly guaranteed.

The invention discloses a tower-type-crane cab having a protective device of an outside air-conditioning unit. The crane cab comprises a cab housing and the outside air-conditioning unit. The cab also comprises a protective framework. The protective framework is disposed below the outside air-conditioning unit. The protective framework is connected to the cab housing through bolts. The tower-type-crane cab is advantageous in that: the tower-type-crane cab is provided with the protective framework, thus holding up components and parts dropped from the outside air-conditioning unit, and holding up water discharged from the outside air-conditioning unit in summer.

The invention discloses a high-heeled shoe with a replaceable heel. The high-heeled shoe comprises a heel and a clamping stand, wherein the clamping stand is arranged on the heel part of a shoe body, and is connected with the heel through a mortise and tenon mechanism and a hook mechanism; the mortise and tenon mechanism comprises a clamping slot arranged in the heel and the clamping stand arranged on the heel part of the shoe body; the clamping slot and the clamping stand are matched in shape and are mutually fixed; the top part of the clamping stand is connected with the heel part of the shoe body; a bottom layer of the clamping stand is a clamping stand structure layer and comprises an internal reinforcement plate, a hook moving cavity, a button structure, a hook structure and a fixed screw; the button structure comprises a button, a movable slot, a cylindrical boss, a button spring and a spring fixing slot; the hook structure comprises a hook, a fixed shaft, a spring locating shaft I, a spring locating shaft II and a hook spring; the hook mechanism comprises a hook and a fixed iron core located on the clamping slot in the heel; an opening of the clamping slot in the heel faces a shoe head; the fixed iron core is located in a groove in the bottom part of the clamping slot. According to the high-heeled shoe with the replaceable heel provided by the invention, the heels with different heights can be replaced for the same high heel, and the demands of people on wearing the high-heeled shoe with the heel in different heights for different occasions are met.

The invention discloses high-heeled shoes with changeable heels. Each of the high-heeled shoes is provided with a lock boss, a metal lock slot and a heel. The lock boss is arranged at the bottom of the rear sole of the shoe, and is fixed with the shoe through a tongue-and-groove structure and a fixing rod structure. The tongue-and-groove structure comprises the metal lock slot formed in the heel and the lock boss arranged at the bottom of the rear sole of the shoe; fixing holes are formed in inner sides of two walls of the metal lock slot, the lock boss is arranged at the bottom of the rear sole of the shoe, the top of the lock boss is connected to the bottom of the rear sole of the shoe, the inside of the bottom layer of the lock boss is provided with a moving cavity, a control rod, a reset spring, the fixing rods and springs are arranged inside the moving cavity, and a button is arranged on the front side of the lock boss. Besides, the fixing rods penetrate the springs to be fixed in the moving cavity; two sides of the control rod make contact with the fixing rods, and the reset spring is arranged at the top end of the control rod. The fixing rod structure comprises the fixing holes in the metal lock slot and the fixing rods on two sides of the lock boss. Heels at different height can be matched with the shoes so that people' requirements for wearing shoes with suitable-height heels on different occasions are met.

An ignition circuit for igniting a gas discharge lamp generates a high voltage gas breakdown pulse by building up a current through a primary winding of a transformer. After a predetermined period and thus when a predetermined current flows through the primary winding, a capacitance is switched in series with said primary winding, thereby generating said high voltage gas breakdown pulse in a secondary winding of said transformer. After generating the high voltage pulse, the capacitance is short-circuited in order to preserve energy in the primary winding. The preserved energy is employed to build up energy again for a next high voltage pulse in a short time. At a high repetition rate and high voltage of the generated pulses, the ignition circuit according to the present invention is also suitable for driving the gas discharge lamp during a take-over period following the gas breakdown of the lamp for heating the lamp electrodes.

An apparatus for transferring adhesive material to portions of filter elements that are displaced relative to the apparatus includes a dispenser from which heated adhesive material is discharged, a transfer arrangement that receives discharged adhesive material and transfers the discharged adhesive material to the portions of the elements as they are displaced, and a cooling arrangement. The cooling arrangement cooperates with the transfer arrangement to cool the discharged adhesive material while the adhesive material is carried by the transfer arrangement to the adhesive material receiving portions of the elements. A process by which adhesive material is transferred to adhesive material receiving portions of the filter elements, as well as an air line panel filter produced by that process, are also discussed.

The invention discloses a multi-station liquid injection system for capacitor manufacturing. The liquid injection station comprises a liquid injection station main body and a programmable logic controller (PLC), the liquid injection station main body comprises a turntable; equidistant accommodating openings with openings are formed in the outer edge of the turntable; and elastic plastic arc piecesare fixed to the two sides of the openings of the accommodating openings with the openings. Grooves are formed in the upper surface of the rotary disc at equal intervals. The grooves are located between the two accommodating openings with the openings. A discharging device is arranged on one side of the liquid injection station main body; the discharging device comprises a mounting ring; telescopic hydraulic cylinders are mounted on the mounting ring at equal intervals; each telescopic hydraulic cylinder comprises a cylinder body and a piston rod; a capacitor placing station is provided withthe accommodating openings with the openings, the elastic plastic arc pieces can be extruded, the capacitor can be pulled out from the openings after extrusion, the conveying belt and the dischargingdevice with the telescopic hydraulic cylinders and the clamping device are arranged, and when the clamping device can stably discharge the capacitor to the conveying belt.

The invention provides a pulping method for treating waste paper pulp by utilizing neutral cellulase and neutral xylanase. The pulping method comprises the following steps: firstly an air gap of a fiber cell wall is prevented from being closed by adopting the long-chain effect of hexadecyl trimethyl ammonium chloride, and then the waste paper pulp is synergistically treated by using the neutral cellulase and neutral xylanase at the same time, so that multiple measures at the same time, fibers in the waste paper pulp are modified, cutinized fibers in the waste paper pulp basically restore the original swelling capability, the cutinization phenomenon of the fibers is alleviated, the drainage of paper pulp is promoted, paper machine speed is improved, and ring crush strength and folding endurance of finished paper are obviously improved.

The present invention includes methods and compositions for enhancing the efficacy of SMCs in treatment of cancer. In particular, the present invention includes methods and compositions for combination therapies that include an SMC and at least a second agent that stimulates one or more apoptotic or immune pathways. The second agent may be, e.g., an immunostimulatory or immunomodulatory compound or oncolytic virus.

The invention discloses a cabinet door safety device for a hydrogen peroxide low-temperature plasma sterilizer, which comprises a cabinet door (1), and a limit switch (2) is installed in a groove (E) above the cabinet door (1). ), a safety cover (3) is installed on the contact of the limit switch (2), and the inner wall of the safety cover (3) is provided with a boss (4), through the through hole (B) of the connecting piece (5) the connecting piece (5) Put it on the small end step shaft of the convex plug (6), tighten the screws to fix the convex plug (6) and the connecting piece (5) on the cabinet door (1), and then fix the connecting piece (5) with screws On the cabinet door (1), when the cabinet door (1) is rising, if there are still unplaced items on the side of the cabinet door (1) or the hand is not pulled out in time, the safety cover (3) will be pressed downward. The force of the limit switch is turned on, and the cabinet door (1) will send a signal to the PLC, so that the cabinet door (1) stops moving, thereby avoiding damage to objects or people.

The invention discloses an anti-disengaging device for hoisting a lifting belt on a lifting ring, and relates to the technical field of mechanical equipment. The anti-disengaging device comprises an anti-disengaging rod, the ends of the anti-disengaging rods are connected with springs, and the ends, away from the anti-disengaging rod, of the springs are connected with magnets; and the anti-disengaging rod comprises a connecting section and a telescopic section, the telescopic section is horizontally connected with the connecting section in a sliding manner, the telescopic section is provided with a horizontal through groove, the connecting section is connected with a screw rod located in the through groove, the screw rod is in threaded connection with a limiting nut, and the size of an opening of the limiting nut is larger than that of an opening of the through groove. According to the scheme, the anti-disengaging rod penetrates into the lifting ring, the two ends of the anti-disengaging rod are fixed through the magnets, the anti-disengaging rod can prevent the lifting belt from disengaging from the lifting ring, and safety accidents are avoided.

The invention relates to an elevator. The elevator comprises a shaftway, an elevator car, a handrail, a ladder stand, a support, a positioning block and electromagnets, wherein the handrail is located in the elevator car; the ladder stand is arranged below a landing door sill of an end station on the bottom layer; the support is connected with the handrail and the car wall; the positioning block is arranged at the end, not connected with the handrail, of the support and made of a material capable of being attracted by the electromagnets; one electromagnet is arranged on the outer side of the car wall and can attract the positioning block to fix the support and the handrail to the car wall when powered on; and the other electromagnet is adjacent to a sill groove of the landing door sill of the end station at the bottom layer. A connecting body of the handrail, the support and the positioning block can be detached from the car wall by powering off the electromagnet located on the outer side of the car wall. The positioning block of the connecting body is inserted into the sill groove of the end station on the bottom layer, the electromagnet adjacent to the sill groove is powered on, the positioning block is attracted by the electromagnet adjacent to the sill groove to fix the connecting body to the landing door sill, and then the handrail can be used as an auxiliary handle for people to climb downwards or upwards a pit through the ladder stand.

The invention relates to a suction cleaning device (1). The suction cleaning device is provided with a filter cavity (2) and a filter bag (4) with a holding plate (3). The filter cavity (2) is provided with a cavity cover (5), the cavity cover (5) is provided with a locking device (6) with a spring element (7) on the inner side pointing to the filter cavity (2), the locking device (6) is arrangedand designed to be adapted to the holding plate (3) of the filter bag (4) in such a way that the cavity cover (5) can be moved into the closed state of the filter cavity (2) only when the holding plate (3) of the filter bag (4) displaces the locking device (6) against the restoring force of the spring element (7) into the release position. The aim of the invention is to advantageously improve thesuction cleaning device (1). Proposed herein is a suggestion, the locking device (6) is arranged on a cover edge region (8) of the cavity cover (5), the cover edge region (8) can engage a cavity edgeregion (9) of the filter cavity (2) in order to close the filter cavity (2), the locking device (6) is designed and arranged to be adapted to the cavity edge region (9) in such a way that, in a preferred position corresponding to the relaxed state of the spring element (7), the locking device (6) impacts the cavity edge region (9) and prevents the cover edge region (8) from engaging with the cavity edge region (9).

The invention relates to a suction cleaning device (1) with a filter chamber (2) and a filter bag (4) with a holding plate (3), wherein the filter chamber (2) has a chamber cover (5), The chamber cover ( 5 ) has a locking device ( 6 ) with a spring element ( 7 ) on the inner side facing the filter chamber ( 2 ), wherein the locking device ( 6 ) is in contact with the filter bag ( 4 ). The retaining plate (3) is suitably arranged and designed such that the locking device (6) is only moved into the release position by the retaining plate (3) of the filter bag (4) against the restoring force of the spring element (7). Only the cavity cover (5) can move to the closed state of the filter cavity (2). In order to advantageously improve the suction cleaning device ( 1 ), it is proposed here that the locking device ( 6 ) is arranged on a lid edge region ( 8 ) of the chamber lid ( 5 ), which for closing The filter chamber (2) can engage the chamber edge region (9) of the filter chamber (2), wherein the locking device (6) is designed and arranged to be adapted to the chamber edge region (9) such that the locking device ( 6) In a preferred position corresponding to the relaxed state of the spring element (7), the cavity edge region (9) is hit and the lid edge region (8) is prevented from engaging with the cavity edge region (9).

The invention discloses a passenger car safety roof window with a quick escape device, which comprises a roof window, a rotating shaft, a safety ladder, a ratchet mechanism and a ratchet shaft; The roof window is opened to the ventilation state. Since the ratchet mechanism is a one-way intermittent movement mechanism, when the roof window is opened, it can prevent the roof window from closing; at the same time, when it is necessary to escape, the roof window can be opened by operating the safety ladder according to the principle of the lever To the maximum, that is, the escape state, which improves the escape probability of the passengers in the car. The safety roof window has the advantages of simple structure, convenient installation and use, and high reliability.

A lower positioning device is fixed on a base, an inner cavity of the lower positioning device is a fork pocket section mounting hole, and the fork pocket section can rotate after being mounted; sliding seat guide rails are fixed at the upper ends of the positioning brackets; the connecting plate is connected to the sliding seat guide rail in a horizontal sliding manner, a proximity switch is fixed on the connecting plate, a transition plate is fixed on the connecting plate in an up-down moving manner, and three or six positioning ball heads are uniformly fixed on the lower end surface of a mounting plate fixed on the transition plate; four stand columns of the riveting point pressing disc device are fixed to the workbench, a supporting plate is fixed to the upper ends of the four stand columns, a TOX gas-liquid boosting cylinder is fixed to the supporting plate, and four guide rods are fixed to the lower end of the supporting plate. The sliding plate slides along the guide rod, and the upper end of the sliding plate is fixed on a lever of the TOX gas-liquid boosting cylinder; the riveting point pressure plate is fixed at the lower end of the sliding plate, and six riveting point punches are arranged on the lower end face. Under the condition that any weight is not increased, the steel ball can be reliably prevented from falling off, the requirement for light weight of the half shaft is met, and the manufacturing cost is reduced.