(57) Abstract:The invention relates to mechanics, more specifically, to machine parts and can be used in the design of the worm drive clamps for clamping flexible hoses. You can use the invention in the design of the worm drive clamps to increase the reliability of the sealing connection of the hose with a nozzle at its outer diameter exceeding 50 mm, installed In the housing of the worm screw. Tape one end fixed in the housing, the other end of which communicates with the screw. On the inner surface of the tape in the area of the body has lining. The lining is designed with sloping punch, exposed their inner edges from it on both sides of the hull on the thickness of the lower part of the body. Punch provided with seats for attachment to the lower end of the tape. In the Central part of the under the hood lining along the axis of symmetry is made with a longitudinal cut, and either end it is provided with legs, the thickness of which the ends are kept to the minimum possible thickness, the width of the lining is made equal to the width of the tape. Proposed such a design of the clamp, which would allow to reduce the force of contraction of the ends of the tape, to create due to this margin of the zone of compression hose pipe to improve the reliability of sealing compounds. 7 Il. The technical field.The invention relates to mechanics, and more particularly to machine tools, and can be used in the design of the worm drive clamps for clamping flexible hoses. You can use the invention in the design of the worm drive clamps to increase the reliability of the sealing connection of the hose with a nozzle at its outer diameter exceeding 50 mmThe level of technology.Famous clip for attaching a flexible hose to a rigid tube, consisting of a wire clamp with double loop, spanning a protracted finger with radial holes, into which are passed the ends of the clamp (patent RF 2079034, CL MKI F 16 L 33/04, 1997). The advantage of the clip is executing him with a double loop in the two girth that allows you to securely compress the joined parts to ensure the integrity of the connection.The disadvantage of the clip is a small force of contraction, which can be implemented, resulting in insufficient sealing hose (large diameter because the necessary compression force increases in proportion to the diameter of the hose) or by increasing the pressure in the hose.Known clamp, comprising a housing with worm screw and the ring of the rim end, interacts jumpers with the worm screw engaged in the contraction of both ends of the clamp for clamping a hose that is placed inside the ring (U.S. patent 5787555, CL F 16 L 33/08, publ. 04.08.1998,).This clamp allows you to develop a greater force of contraction than mentioned above. However, when increasing the diameter of the pinched piping or pressure in the growing effort may not be enough to ensure reliable sealing of the connection. As you know, the sealing connection of the hose with a pipe depends on the pressure P with which the hose is pressed against the nozzle. When the required value of R. the force of contraction of the ends of the tape clamp - F can be determined by the formula:
where F is the force of contraction of the ends of the tape clamp;
P - pressure compression hose;
d - diameter of the hose;
b - the width of the tape;
f - coefficient of friction (similar to static friction) tape clamp on the surface of the hose.In the known fastener tape options are selected from structural considerations, resulting in the clamp has a large area of contact with the hose that leads to increased efforts are needed tightening to ensure the reliability of sealing compounds. The presence of the slots affects the cross hose, especially for large diameters and high pressures
Known worm clamp, comprising a housing with worm screw and the metal strip in the form of a ring, one end of which is fixed in the housing, and the other upper end is provided with elements helical gear is made in the form of convex jumper with wavy-shaped surfaces (RF patent 2075002, CL F 16 L 33/06, 1997).In this decision, the tape is cut with the ridges on the upper end, and on the remaining part of the strip has a constant cross-section with a width determined by the need to ensure engagement with the screw. In addition, jumpers due to wolnoobraznosti transverse profile are essentially convex-concave and its bottom surface also perceive pressure from objimage hose. Thus, the aforementioned worm gear clamp has a large area of contact with the hose that leads to an increase in the required effort of pulling the ends of the tape to ensure a reliable sealing of the connection. This leads to reduced reliability clamps, especially for hoses with large diameters and high pressures.The essence of the invention.The objective of the invention is to develop the and this reserve force, providing increased reliability. In addition, the clip must ensure the creation of more than one zone compression hose pipe to improve the reliability of sealing of the connection.According to the invention this object is achieved in that the worm clamp, comprising a housing with worm screw and the metal strip in the form of a ring fixed to one (lower) end of the housing, and the other (upper) end is made transversely-inclined slots with convex ridges interacting with screw screw nut, the lower end of the tape with longitudinal cut extending to the upper end of the tape with the jumpers and made equal in width to the transverse length of the cut, the clamp cushioned, fixed on the bottom surface of the lower end of the tape and is made with inclined punch, located on both sides of the body, a longitudinal cut along the symmetry axis between a punch and come down on the "condition" tabs at its ends.The invention is illustrated by drawings, in which:
Fig. 1 shows a General view of the upper part of the yoke housing and the worm screw;
Fig 2 is a view in plan on the lining (item 6);
Fig.3 - section a-a of Fig.2;
Fig 4 - section C-C Phi Information confirming the possibility of carrying out the invention.Worm clamp includes (Fig.1) case 1 with the worm screw 2, the metal strip 3 made in the form of a ring. Tape 3 by its end (bottom) 4 fixed in the housing 1, for example, by welding. The other (upper) end of the 5 tapes made interacting with the screw 2. Worm clamp equipped with a lining 6, installed on the inner surface of the tape in the region of the housing 1. Lining 6 (Fig.2-4) are made with inclined punch 7, projecting their inner edges from it on both sides of the housing 1 on the thickness of the lower part of the body. The punch 7 is equipped with seats for attachment 8 to the lower end of the tape 4. In the Central part under the body 1 pad 6 on the axis of symmetry is made with a longitudinal cutout 10, and at both ends it is provided with legs 9, the thickness of which the ends are reduced to "condition" to the minimum possible thickness for technological reasons - to 0.2-0.3 mm, the width of the lining is made equal to the width of the tape 3, and the width of the cutout 10, and the width of the inclined punch, and the distance between the legs 9 is made equal to the transverse (perpendicular to the ribbon 3) the length of the slots 13 (Fig.6).The lower end of the tape 4 (Fig.5) equipped with Prodotti 5, made with elements of engagement with the worm (Fig.6). While the cutout 11 divides the tape into two branches 12. The upper end of the tape 5 is made with a transversely-inclined slots 13 and the ridges 14 that interacts with the turns of the worm screw 2. Jumper 14 is convex outward (Fig. 7) by an amount not less than the ribbon thickness and consist of a radial transition 16 flat 17 sites. The edges of the slots and jumpers tape has a flange 15, which pass into the branch 12 and together with them and with elements of the lining 6 components of the two annular surfaces that come in contact with the outer surface of the hose (not shown).Works worm clamp as follows. The clamp is put on the hose, after which the rotation of the screw, the upper end of the tape 5 is moved relative to the housing, thereby reducing the circumference of the ring and compressing the pipeline.Due to the presence of jumpers made convex outward longitudinal cutout 11 in the tape and the strip 6 compression hose comes in two circular lines around the edges of the ring, forming two rings of sealing around the perimeter of the pipeline, which ensure a reliable sealing connection with a smaller force of contraction. In addition, since the contact area Le is taiwania. Thus, the clamp made in accordance with the invention, has a high reliability at the expense of the reserve force of contraction, provides improved reliability of the sealing of the connection pipe with pipe that is especially significant when increasing the pipeline diameter (greater than 50 mm) and the increase in pressure in the pipeline.The production of the worm clamp in accordance with the invention does not cause any difficulties and can be implemented on any known metal-working equipment. Worm clamp, comprising a housing with worm screw and the metal strip in the form of a ring fixed to one (lower) end of the housing, and the other (upper) end is made transversely-inclined slots with convex ridges interacting with the screw worm, characterized in that the lower end of the tape with longitudinal cut extending to the upper end of the tape with the jumpers and made equal in width to the transverse length of the slots, the clamp cushioned, fixed on the bottom surface of the lower end of the tape and is made with inclined punch located on both sides of the body, longitudinal cut along the symmetry axis between the punch is
SUBSTANCE: said invention relates to quick-release elements of flange connections, in particular, to band clamps. The clamp consists of a tie band with loop knots, in which band-fixed tie elements are installed, and a tie bolt and nut. On one side of the tie band there is a recess, links being provided with outer clamps, while tension sleeves with side shoulders act as tie elements. On shoulders of the first sleeve, there are flats, while inner surfaces of the other sleeve are parallel-plane, a clearance of 2-3% of the tie band outer diameter is being provided between the sleeve flat surface and the nut end.
EFFECT: enhanced reliability of the machine fastening security and enhanced ease of the clamp manufacture and installation.
SUBSTANCE: invention relates to devices for split joints of axisymmetric cylindrical or conical details. The device consists of a tension tape covering details to be jointed together in planes of tension, a tension belt and tightening elements. Tie bars are arranged on the tension tape inside to interact with the details flanges. The tension belt passes around of bolts of the tension tape, the bolts being located perpendicular to a direction of the tension tape stretching. Two opposite removable bolts are interconnected by means of the tightening element. Every tightening element consists of two tightening levers fixed to turn on the support plate at a distance from each other. The support plate accommodates the bolts to locked in tightened position. On releasing, the tightening levers are loaded by slowing down elements.
EFFECT: adjustable and optimised release of axisymmetric details.
10 cl, 6 dwg
FIELD: instrument making.
SUBSTANCE: sprinkler clip comprises bending loop-like support clamp with its ends furnished with one hole and superimposed in closed position. Note here that, in the said position, the first hole in the inside end of support clamp mates the second hole on the clamp outside end so that the clamping element is received into both holes, the said clamping element being furnished with a radial ledge resting upon inside hole edge from inside. In compliance with the invention, the second hole cross section differs from that of the first hole, and that the clamping element is furnished with a radial bulge at a distance from the previously mentioned radial ledge, which allows the clamping element to be held on the fist hole edge without slippage and to enter the second hole.
EFFECT: simple and reliable fastening of sprinkler pipelines on mounting components.
12 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: strip of clamp is wrapped around wrapped part: at first fixing end of strip is secured in locking device, then this end is bent to 180 degrees and finally fixed by filaments of locking device. Locking device is made by doing three cuts on end locking part of strip parallel to the main direction of the strip (at that length of cut is more than width of strip), by further bending of four straps perpendicular to the main direction of the strip into directions corresponding to directions of straps location relative to the strip, by use of two formed filaments for initial attachment of fixing end of strip in locking device and two other filaments for final attachment of fixing end of strip. For initial attachment of strip in locking device filaments formed by outer straps may be used. For attachment of end of bent strip filaments formed by inner straps may be used. Length of central cut is 1/4 of strip width more than lengths of side cuts.
EFFECT: improving production effectiveness and autonomy production, reducing dimensions of mounted clamp with locking device.
3 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: invention relates to devices securing the tubular parts and elastic enclosures by tape collars. The universal self-clamping collar to secure tubular pipes and elastic enclosures, and to prevent leaks from air mains is made as double hollow in form of rectangular bag, for example, out of rubberized fabric, having on internal surface at hole in the middle, on it a "patch" is secured out of material that has higher air permeability in comparison with the bag material, and prevents its quick inflation, and along edges of two sides of the collar there are clamps - clips, at that for securing and self-clamping of the collar additionally the hollow "tongue" (of pocket type) is used, it is located on one side of the collar between the clamps-clips; on the external side of the "tongue" there is Velcro fastener, that goes through the rectangular clevis located at opposite side relatively to the hollow "tongue", and is fixed on the counterpart using the Velcro fastener on the external side of the double bag.
EFFECT: higher reliability of connection.
FIELD: machine building.
SUBSTANCE: invention relates to a clamping ring. A clamping ring is a metal tape having a projecting lug near the first end and a hook near the second end, the hook comprises a front wall able of holding near the rear lug wall when the hook is hooked on the lug, to hold the ring in a tightened position, the top view shows that the rear lug wall includes a V-shape configuration with an end turned from the hook, and the front hook wall includes hooking sides set at the angle to the transverse direction of the tape in order to match the inclination angle of the V-shaped configuration sections.
EFFECT: invention provides for centring of the hook and the lug in respect to each other.
12 cl, 7 dwg
FIELD: instrument making.
SUBSTANCE: invention relates to holder (6), which is intended for attachment of control device (4), for example, to reservoir (1) under pressure or similar container and which is installed/secured by strap element (12). Holder (6) is equipped with cavity (8) forming first part (10a) and second part (10b), at least one of which is flexible relative to each other so that outer end sections of parts (10a, 10b) are pressed to each other when strap element (12) is tightened, thereby reducing width of cavity (8) and preventing slippage of control device/cable (4) inserted into cavity (8) from holder (6).
EFFECT: simple and reliable installation of control device.
6 cl, 15 dwg
SUBSTANCE: invention relates to a screw joint, in particular for a collar, and is aimed at achieving the simplest way of geometrically reproducible installation of the final state of the screw connection. It is a screw connection, in particular indicated for a tensioning clamp, with a screw having a screw head and an external thread having a thread profile and a threaded shaft, and a counter-threaded member, that the male thread adapted internal thread with at least one of the thread flanks limited thread notch and into which the screw can be screwed. External threads at a predetermined distance from the screw head have a geometrically defined deformed portion which when screwing the screw into the mating threaded element is facing at least one side face of the thread profile and which is formed by plastic deformation by molding at least one profile of the thread in the radial direction.
EFFECT: deformed portion extends substantially parallel to the perpendicular to the thread axis.
11 cl, 3 dwg
FIELD: machine engineering.
SUBSTANCE: shrinking clamping ring from the initially open clamping belt for closing is equipped with ends interlocking like a puzzle. From one end of the belt there is a tongue protruding in the longitudinal direction of the belt, and on this tongue there are fingerlike elements disposed transversely to the longitudinal direction of the tape; from the other end of the belt a notch is made, which in its configuration complements the shape of the tongue. At each outer end of the transverse edges of the finger-like elements located across the longitudinal direction of the tbelt and facing the free end of the tongue, there is one protuberance, and at the inner end there is one recess.
EFFECT: increase the strength of the mutual connection of the end edges.
9 cl, 3 dwg