Puller for removal
(57) Abstract:The invention relates to a mechanical Assembly production and can be used when removing items mainly forging connections. On the housing pivotally mounted gripping legs in the form of two shoulders arms and is mounted in contact with the levers rotatable disk having the form of a flat fist. The levers are biased to the fist. On the working surface of the fist are the areas of the spiral form, which is a contact zone of a fist with a shrug of the levers. In the housing bore is the power cylinder with the rod. The levers may be inclined to the axis of the housing grooves covering the hinges for extra grip gripper supports with removable item. Two shoulders, the arms may be spring-loaded with respect to these joints. The result is improved reliability and manufacturability of its manufacture, as well as decrease its size and weight. 1 C.p. f-crystals, 3 ill. The invention relates to equipment mechanical Assembly production, namely, devices for dismantling parts, mainly press-fit connection.Known pullers according to the author's certificate of the USSR N 490626, B 23 P 19/02, 1975 ka mounted with the possibility of axial movement of the disk, paws made in the form of l-shaped levers, one arm of which communicates with the specified disk, and the other with the item.A known design of a stripper has the following disadvantages. A disk is mounted with the possibility of axial movement of the threaded pair on the basis complicates the design and reduces the operating speed of the device, and the presence of l-shaped levers installed one of the shoulders in a peripheral annular groove of the disk increases the size and weight of a stripper. Gripping levers mounted on the crossbar of the base with the possibility of disengagement with the item under load due to the elastic deformation of the elements of the device.Known puller for removal.with. USSR N 1593880, B 38 P 19/02, B. I. N 35, 1990), comprising a housing with an opening and pivotally attached to the gripping legs made in the form of two shoulders of the levers. The puller includes a power cylinder with a piston rod mounted for movement in said opening, and a disk made with the contact zone with the corresponding arms of the levers and mounted on the housing can be rotated about its axis. The surface of the disk that hosts the zone of contact with the shoulders of the levers made vognutuyu grooves. In another embodiment, the puller is made with a spiral protrusion on the end of the disk.This design puller selected for the prototype.The disadvantages of this puller is the low reliability of the clutch with the item, low manufacturability, increased size and weight. Indeed, when concatenating the corresponding arms of the levers with removable item possible elastic deformations, which do not are compensated, which can lead to tripping of seizures. Run disk with a spiral groove on the top of a spiral protrusion on reduces manufacturability. This circumstance is exacerbated by the fact that the contact zone is formed on the concave surface. The presence of the same drive with the front contact area increases the size and weight of a stripper. In one spiral groove depending on the number of seizures is two or three levers, which reduces the time information or breeding levers because of the small elevation angle of the spiral.The objective of the invention is to improve the reliability of coupling with detail, improving manufacturability, reduced size and weight. The aim was to improve the performance of the device.Tasks resh form two shoulders of the levers, the power cylinder with a rod arranged to move in the housing bore, and a disk mounted on the housing can be rotated about its axis and having a zone of contact with the respective shoulders two shoulders levers carried out the following improvements. The disk is made in the form of a flat fist with the area of contact with the shoulders of the levers in the form located on the working surface of the fist plots spiral shape, each of which has the ability to interact with the corresponding lever, a spring-loaded to the drive. Two shoulders levers are made with inclined to the axis of the housing grooves covering the hinges to provide additional grip gripper supports with removable item, with two shoulders levers is spring-loaded relative to the above-mentioned hinges.These improvements enhance the performance, reliability clutch with detail and manufacturability, significantly reduce the dimensions of the extractor and its weight.The essence of the invention is illustrated in the drawings. In Fig. 1 shows a longitudinal axial section of the puller of Fig. 2 is a view of the disk by the arrow a in Fig. 1, and Fig. 3 is a view of the two shoulders of the lever and a flat spring, view B in Fig. is m is the piston 4 with the sleeve 5 and the shaft 6. Side of the piston 4 in the housing has a threaded hole 7 for connection with a hydraulic drive (not shown). On the other side of the housing 1 is fixed to the flange 8. In the flange 8 is spring 9 of the shaft 6. The shaft 6 carries at its end center 10 for engagement with the shaft removed parts. In the radial grooves 11 of the spider 2 (Fig. 1 and 2) are two shoulders levers 12. Their inclined relative to the axis of the housing 1 by the grooves 13 cover hinges 14, mounted in the crossbar 2. The lever 12 is biased to the hinges flat U-shaped spring 15 (Fig.3).The levers 12 are on one shoulder from the center 10 of the shaft 6 hooks 16. Between the housing 1 and two shoulders arms 12 mounted spring 17 with the ability to preload each of the second arm levers 12, carrying at their ends the screws 18 with a spherical head 19, the disk 20, is made in the form of a flat fist. The disk 20 has a contact zone with a shrug of the levers in the form located on the working surface of the knuckle sections 21 of the spiral form (Fig. 2). The disk 20 to rotate the arm 22 is mounted on the casing 1. Against lateral displacements of the two shoulders, the arms 12 are held in addition to the slots 11 slots 23 of the strap 24 to be fixed to the flange 8 by a nut 25. Setting two shoulders levers 12 in Pasi grip removable parts for its internal projections.The extractor works as follows.Capture the removed parts produced during the rotation of the disk 20 by the handle 22. Initially two shoulders levers 12 are reduced or diluted to the required distance between hooks 16 to contact the hooks 16 with protrusions details. Then push the rod 6, feeding oil into the hole 7, associated with the hydraulic drive. The rod 6 extends to another center 10 at the end of the shaft removable parts. The levers 12, moving along the slots 13, due to the inclination of the slots relative to the axis of the puller tightly interlock with removable item, compensating for possible elastic deformation of seizures.Increase the pressure under the piston rod 4 and carry out the removal.After removal of the pressure in the hydraulic system is reduced to atmospheric and the rotation of the disk 20 in the reverse direction to remove the item from the hooks 16 of the puller.Run disk 20 in the form of a flat fist with the area of contact with the shoulders of the levers in the form located on the working surface of the knuckle sections 21 of the spiral form reduces the size and weight of the puller, improved manufacturability. The presence of the inclined groove 13 in the two shoulders of the levers 12, the pressing levers to the hinges 14 increases the reliability of operation of the puller by providing the Mixing and dilution of the levers 12 by capturing and retrieving items using disk 20, made in the form of a flat fist placed on the working surface sections 21 under the corresponding arms of the levers 12, improves performance due to the large elevation angle of the spiral under each arm. 1. Puller for removal, comprising a housing with an opening, pivotally mounted on the casing gripping legs in the form of two shoulders of the levers, the power cylinder with the rod positioned for movement in the housing bore, and a disk mounted on the housing can be rotated about its axis and having a zone of contact with the respective shoulders two shoulders of the levers, wherein the disk is made in the form of a flat fist with the area of contact with the shoulders of the levers in the form located on the working surface of the fist plots spiral shape, each of which has the ability to interact with the corresponding lever, a spring-loaded to the disk.2. The puller under item 1, characterized in that the two shoulders levers are made with inclined to the axis of the housing grooves covering the hinges to provide additional grip gripper supports with removable item, with two shoulders levers is spring-loaded relative to that of the hinges.
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: 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: 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: 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.
FIELD: railway transport; repair of rolled wheels.
SUBSTANCE: according to invention, front and rear plates braced by load-bearing studs with nuts are installed on base to form power unit. Rear plate carries piston hydraulic cylinder with hollow rod and piston with bore. Additional piston and rod are installed, according, in bore of piston and space of hollow rod. Rod thrust against central end face of wheel-set axle. Hollow rod thrust against end face of stepped bore of wheel-set axle found between seat steps for wheel hub and for bearings. Slot is made in front plate for fitting wheel-set axle and thrusting of wheel hub against front plate. Support for wheel-set axle is installed for vertical displacement on base from outer side of power unit. Front plate is braced to base by bolts and bushings and it can displace longitudinal through value of linear deformations. Centers of holes for studs in plates are arranged over circumference with center coinciding with longitudinal axis of hydraulic cylinder.
EFFECT: simplified design of plant, improved reliability and quality of pressing off.
FIELD: processes and apparatuses for pressing-in indenters in housing of drilling bits.
SUBSTANCE: apparatus includes two hydraulic cylinders mounted stationary and mutually communicating; duct for supplying energy carrier communicated with piston cavity of one hydraulic cylinder; pair of pistons and rods. Geometry axes of pistons of hydraulic cylinders are arranged eccentrically relative to common geometry axis of rods.
EFFECT: prevention of cranking rods, coaxial alignment at pressing-in indenters into housing of drilling bits.
FIELD: apparatuses for assembling and disassembling metallic units, possibly dismounting wheels for axles of wheel pairs.
SUBSTANCE: hydraulic device includes sleeve and pusher. Sleeve has turning. Pusher is mounted in turning with possibility of axial motion for forming piston cavity by its one end. Hydraulic device is provided with additional sleeve and piston. Additional sleeve has stepped turning. Sleeve is placed in small-diameter step of turning of additional sleeve with possibility of axial motion for creating in piston cavity pressure acting upon ends of sleeve, additional sleeve and pusher.
EFFECT: improved quality of pressing off process, simplified maintenance.
3 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: present invention pertains to machine building, particularly to devices for controlling the pressing process when making press joints in cylindrical objects for automating control of assembling processes. The device for controlling the pressing process when making press joints in cylindrical objects has a hydraulic press, joined together four updrafts with an elevating beam, four measuring transducers, each of which is in form of a strain sensor, an analogue-to-digital converter and an evaluator. The strain sensors are made on a measuring bridge circuit with provision for registering forces arising in the four updrafts. The outputs of the strain sensors are connected to the inputs of the analogue-to-digital converter, and the outputs of the latter are connected to inputs of the evaluator.
EFFECT: simplification of the design and widening of technological capabilities of the invented device.
FIELD: machine building.
SUBSTANCE: here is disclosed facility consisting of case, mechanism of pusher and mechanism of alignment. The mechanism of the pusher consists of a base with a pneumatic cylinder assembled thereon and a slider designed for transfer the insertion till a collet. The alignment mechanism consists of a base and of secured to it rod; the rod is transferred downward along the case to the collet by applying pressure onto the base. The case is connected to a cover equipped with a cone for alignment of the case of the pin. The rod knocks the insertion out of the collet and the insertion is pressed into the case of the pin.
EFFECT: expanded process functionality.
2 cl, 1 dwg
FIELD: technological processes.
SUBSTANCE: invention relates to the field of railway machine building, in particular to devices for assembly and disassembly of railway wheelsets. Press comprises power frame installed on base in the form of two fixed cross beams connected to each other by two columns, two power hydraulic cylinders installed on fixed cross beams, thrust cross beam for installation of wheelsets elements and two movable cross beams. Each movable cross beam is rigidly connected to plunger of according power hydraulic cylinder and is arranged with the possibility of displacement relative to axes of power frame columns. Movable cross beams are equipped with bearing location plates arranged with the possibility to install wheelset axle on them and its basing and centering in box journals. Thrust cross beam is hingedly installed in columns of power frame between bearing location plates with the possibility of its rotation around its axis, which is perpendicular to axes of power frame columns.
EFFECT: technological resources are expanded, and efficiency of press operations use in assembly or disassembly of wheelsets is increased.
5 cl, 7 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.