A device for removing the pressure shell of the internal cavity of the tubular product
(57) Abstract:The use of machinery in the manufacture of pressed articles having an internal cavity, such as pipes, shells, etc. to remove the pressure shell after extrusion products. The inventive device includes upper and lower caps mounted on the ends of the rod with forming elements in the form of ribs. Ribs are located along the axis of the rod. The bottom bracket is rigidly connected with the rod, and the top connected with him through the thread and made a channel for the exit of air from the cavity of the shell. Tubular product and pressing the shell with a core and mounted at their ends by plugs placed in a beaker with a lid having an aperture for feeding the working environment. Under the pressure of the working medium pressure shell loses its stability in the radial direction and is formed along the whole length in the shape of the edges of the rod. After pressure removal and dismantling of the device crumpled shell is easily removed from the cavity of the product. 2 Il. The invention relates to mechanical engineering and can be used in the manufacture of articles having an internal cavity, such as pipes, shells, etc. to remove presumbly from the internal cavity of the tubular product, containing a cylindrical housing and a rod attached to it forming elements mounted in the housing with a gap to accommodate tubular products and the pressure shell.The disadvantages of this device are the need to use powerful pulling equipment, as well as the impossibility of obtaining clean the inner surface of the pipe. In addition, the device does not allow you to remove the shell from the tube of variable cross-section, and of thin-walled pipes made of fiber composite material, as in the removal process may damage the walls of the pipe.An object of the invention is the provision of a complete removal of the diaphragm from products which have a constant or variable (stepped) cross-section along the length while maintaining the high quality of the items themselves and their inner surfaces, as well as simplifying the design of the device.The task is solved in that known device for removing the pressure shell of the internal cavity of the tubular articles containing cylindrical body and a rod attached to it forming elements mounted in the housing with a gap to accommodate truncatula elements made in the form of ribs, located along the axis of the rod, which is fixed on the bottom cover and connected by means of a thread with the top cover is made with a channel for the exit of air from the cavity of the pressure shell, the cylindrical casing is a Cup with a lid made with a hole for the input energy source that creates pressure inside the case, and drilled and tapped to attach the top of the stub.In Fig.1 shows a device, a General view of Fig.2 section a-a in Fig.1.The device comprises a cylindrical housing 1 made in the form of a Cup with a lid 2 having an aperture 3 for input energy, creating pressure inside the enclosure. The case contains a rod 4 with forming elements in the form of ribs located along the axis of the rod. The rod 4 is fixed on the bottom cover 5 and is connected by threads 6 with the top cover 7. The cap 7 has a channel 8 for the escape of air from the cavity pressure shell 9, which is connected with the tubular product 10. For sealing joints pressure shell 9 and the plugs 5 and 7 are rubber rings 11 and 12. In addition, the device includes sealing rings 13, 14 and 15.The device works as obrazov the top cover 7. The joints of the pressure shell 9 with lid closed with rubber rings 11 and 12, which, in view of the smallness of the gap can withstand high pressure. The resulting Assembly is connected with the cover 2 through the sealing ring 14 and install the cover 2 on the glass 1, and then through the hole 3 is poured into the cavity of the glass of water and create a pressure not exceeding 50 kgf/cm2.Pressing the shell under the action of water pressure loses its stability in the radial direction and is formed along the whole length in the shape of the edges of the rod, after which the pressure remove and disassemble the device. Crumpled shell is easily removed from the internal cavity of the tubular product.The proposed device in comparison with the known has the following advantages:
ensures complete removal of the pressure shell while maintaining the high quality of the inner surface of the product;
allows you to remove the shell from pipes with variable cross-section along the length;
simplifies the technology and reduces the complexity of the process;
does not require special sophisticated equipment.Testing device for removing the pressure shell of the internal cavity of the tubular product showed the possibility of obtaining pipes visua SHELL FROM the INTERNAL cavity of the TUBULAR PRODUCT, containing a cylindrical housing and a rod attached to it forming elements mounted in the housing with a gap to accommodate tubular products and pressuse shell, characterized in that it has two plugs of the internal cavity of the pressure shell, forming elements in the form of ribs located along the axis of the rod, which is fixed on the bottom cover and connected by means of a thread with the top cover is made with a channel for the exit of air from the cavity of the pressure shell and the cylindrical casing is a Cup with a lid made with a hole for the input energy source that creates pressure inside and drilled and tapped to attach the top of the stub.
FIELD: repairing equipment of shops, namely of locomotive depots of railway road transport vehicles.
SUBSTANCE: movable installation includes lifting table having lower wheeled platform and jointly mounted on it upper stand; mechanism for lifting and descending said stand; power hydraulic cylinder mounted on upper stand and communicated by means of hydraulic lines through control unit with high-pressure pump system; clamping device for mounting-dismounting bearing assemblies. High pressure pump system includes tank, pump aggregate, draining pipeline, suction pipeline connecting inlet of pump aggregate with tank. Lifting and descending mechanism is in the form of hydraulic cylinder and it is mounted on lower platform. Pump aggregate is arranged on upper lid of tank and it is in the form of displacement hydraulic pump with electric motor. Filter is mounted in suction pipeline. Control unit is in the form of body having two built-in safety valves, tap distributor and built-in non-return valve. Manometer and additional filter connected with draining pipeline and having pouring hole are connected with control unit. Hydraulic lines are in the form of flexible hoses. Installation is provided with additional power hydraulic cylinder that forms together with connected in parallel main hydraulic cylinder unit of power hydraulic cylinders. Said unit of power hydraulic cylinders is placed on supporting sheet-plate mounted on upper stand with possibility of rotation or removal from upper stand and with possibility of moving in range of length of flexible hoses. Similar cavities of hydraulic cylinders are mutually communicated. Clamping device includes movable and stationary plates mounted respectively on rods and back lids of hydraulic cylinders and designed for joining tie rods of attachment.
EFFECT: enhanced reliability, no-failure operation of installation.
FIELD: assembling of precise units of instruments by pressing-in with use of calibrated effort, by riveting and expanding with use of precession tool.
SUBSTANCE: press includes П-shaped housing; adjustable table mounted in struts of housing and fixed to said struts by means of pins; power hydraulic cylinder with axial motion of rod; rotation drive of precession head; pumping station of hydraulic drive unit. Rotation drive of precession head includes electric motor and belt transmission. Power hydraulic cylinder is rigidly mounted on cross piece of housing and it carries plate on end of spring-loaded rod. Said plate supports two plungers spaced in parallel relative to axis of rod and spring-loaded relative to housing. Pulleys of belt transmission of rotation drive are mounted in casing. The last is secured to plate in such a way that driven pulley is mounted on spindle coaxially relative to rod of hydraulic cylinder and driving pulley is mounted on the same axis as shaft of electric motor placed in cross piece of housing. Driving pulley and shaft of electric motor are kinematically joined by means of other shaft whose one end is mounted in shaft of electric motor and whose other end is joined by means of sliding dowel with opening of supporting axle of driving pulley. Spindle of driven pulley is joined with precession head.
EFFECT: improved design providing enhanced rigidity and working accuracy of press.
FIELD: mechanical assembling procedures, namely equipment for assembling aggregates of caterpillar transport vehicles, for example semiautomatic machines for assembling caterpillar tracks.
SUBSTANCE: in apparatus for assembling chain stop plate is mounted in such a way that its working surface is arranged in plane normal relative to pressing in plane. Upper non-working portion of stop plate at side of ending pressing-in cycle is inclined in horizontal plane to side from rotor type conveyer. Lower non-working portion of plate in vertical plane is inclined relative to vertical line to side from rotor type conveyer. Stop part of pusher exceeds diameter of head of pin. Rigid guides are arranged in plane parallel to pressing-in plane; said guides are in the form of roller tables with pitch between rollers of roller table less than pitch of chain links. Guides embrace upper branch of conveyer from downwards and branch of chain from upwards at least along the whole length of it. Drive unit is provided in addition with back-stroke mechanism. Splitter is in the form of plate that is jointly mounted in its mean portion along lateral sides on supporting surface in horizontal plane along motion direction of conveyer for moving pins and it forms two-arm lever. One end of said lever is spring-loaded from downwards with possibility of engaging with dents of conveyer for moving pins. Other end of said lever is Г-shaped one and it may engage by free end with pins on inclined trough. Horizontal axes of articulation joints in vertical plane are provided with holding levers rigidly joined with plate and mounted with possibility of engaging with pins on inclined trough.
EFFECT: enlarged manufacturing possibilities, enhanced operational reliability.
FIELD: mechanical engineering.
SUBSTANCE: mandrel has guide, working part made of deformable teeth, calibration parts, and diverging groove made in the guide and working parts. The expanded end of the groove is in coincident with the origin of the guiding part. The groove that ends at the last deformable tooth of the working part has radius-shaped cross-section.
EFFECT: enhanced quality of the press joint and expanded functional capability.
FIELD: machine engineering, namely equipment for dismounting press-fit joints, possibly restoration of electric machines.
SUBSTANCE: apparatus includes housing with platforms for horizontal and vertical motions. Part to be dismounted is placed on horizontal motion platform and it is fed to stripping mechanism. The last is joined with vertical motion platform by means of fastening members and it is provided with adjusted grips supporting heating members with possibility of their axial movement. Heating members are in the form of nozzles for alternating feed of hot and cooled air.
EFFECT: reduced axial errors between dismounted part and stripping mechanism, lowered efforts for stripping parts.
5 cl, 5 dwg
FIELD: mechanical engineering.
SUBSTANCE: device comprises the mechanism for locking pressed parts made of an extensible sleeve. The first power hydraulic cylinder is used for moving parts and can rotate between two vertical unmovable pillars. The pillars are pivotally connected in pair with movable vertical pillars through the top and bottom horizontal clamps. The extensible spring-loaded stop with the drive and the first hydraulic cylinder are axially aligned. The first power hydraulic cylinder receives the second power hydraulic cylinder whose rod is provided with first center and spring. One end of the spring co-operates with the piston, and other end of the spring co-operates with the face of the extensible sleeve. The extensible stop receives the second center with the stack of plate springs that is coaxial to the first center. The bottom clams are provided with a lifting-rotating device.
EFFECT: reduced labor consumption for making and simplified structure.
1 cl, 2 dwg
FIELD: devices designed for simplifying procedures of assembling/disassembling units.
SUBSTANCE: crank stripper includes cross piece 1 supporting power mechanism in the form of one-way telescopic hydraulic cylinder 2 having thrust rod 3 for shaft of crank 14; mechanism for forced closing of foots having cylindrical discs 8, 9, paired plates 10 and double-arm levers 4,5. One arm is used for engaging with crank; other arm of is cone one and it may rest upon lateral surface of cylindrical disc secured to lateral side of cross piece. Double-arm lever whose arms are mutually inclined by obtuse angle is jointly mounted through paired plates in center of disc. Articulation joint of lever is mounted in edge portion of second lever arm on line of inner surface of first lever arm.
EFFECT: intensified clamping of part by foots, enhanced efficiency, lowered cost price of working operations.
FIELD: mechanical engineering.
SUBSTANCE: method comprises gripping the part to be dismounted and applying axial load by means of at least two ties and, e.g., hydraulic cylinder. The rod of the hydraulic cylinder cooperates with the face of the shaft. The ties are interconnected via a plate opposite to the end of the part to be dismounted. Each of the ties is provided with the eccentric groove. The ties are set in the openings in the part to be dismounted for permitting engagement by their step defined by the eccentric groove. Between the wall of the opening of the part to be dismounted and each tie is sickle-shaped bushing member. The hydraulic cylinder abuts against the plate so that to provide relationships D1 ≤ D2, b ≥ H, e = h, where D1 is the outer diameter of the tie, D2 is the diameter of the opening in the part to be dismounted, b is the width of the eccentric groove, H is the thickness of the part, e is the eccentricity of the groove with respect to the axis of the tie, and h is the maximum thickness of the sickle-shaped bushing member.
EFFECT: expanded functional capabilities.
1 cl, 2 dwg
FIELD: machine engineering, namely mechanical strippers.
SUBSTANCE: stripper includes traverse bar with grips, screw having two outer threads with different pitches; main detachable sleeve mounted by thread whose pitch is less than that of said screw; additional threaded sleeve mounted by second thread of said screw; holder embracing both sleeves, fixed relative to them in angular direction and resting by its inner shoulder upon end of main sleeve. Inner shoulder is formed on one end of holder; other open end of holder is arranged in through opening of traverse bar and it is rigidly joined with said bar. Threads of powerful screw have similar sign; additional sleeve has outer flange spaced from open end of holder by interval determined according to relation K = B1(H2/H1 - 1), where K - interval between outer flange of additional sleeve and open end of holder; B1 - displacement (caused by main sleeve) of part stripped by means of stripper; H2 - thread pitch of additional sleeve; H1 - thread pitch of main sleeve. Sleeves are mutually spaced by interval T exceeding value of mutual convergence of sleeves.
EFFECT: simplified usage of stripper.
FIELD: railway road machine engineering, possibly repairing of railroad machines.
SUBSTANCE: press includes frame having base and two struts mutually joined by means of two columns; working cylinder mounted on one of said struts; force and supporting traverse bars with rollers. Said traverse bars are arranged between struts of press frame and they are mounted with possibility motion on rollers along columns of power frame. Force traverse bar is mounted with possibility of fixing it to columns.
EFFECT: enlarged manufacturing possibilities, improved quality of combining wheel pairs, simplified design of press.