RU2533283C2 - Split squeezing clamp - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to machine building. Split squeezing clamp comprises flexible tape with shaped ledges on outer side, lock with stem on tape one end to straighten the clamp inner shape and tightener. The latter is composed of detachable device to tighten the clamp at force higher than that of manual clamp tightening. Clamp is made of plastic. Lock is composed of the case with tape passage slit to make a closed ring and wedge-shape retainer. Said retainer is fixed inside said case and provided with mating teeth to engage with tape teeth and to retain the clamp as-tightened. Besides, it has latch to open aforesaid lock.

EFFECT: simplified production.

5 cl, 2 dwg

Description

Technical field

The invention relates to hose clamps (clamps) for sealing joints on various pipelines of industrial and civil facilities, in particular for fixing, attaching, sealing soft, flexible hoses, sleeves, corrugations, shells on a rigid base of pipes, pipes, necks, and t .d.

Known "Worm clamp" RU 2096675, IPC F16L 33/08, 1995 [1], containing a metal tape in the form of a ring with embossed protrusions on the outside, forming a helical line at one end, with a casing mounted on the other end, covering the tabs with by bending the tape from the inside through the through groove of the tape, and a worm screw located in the housing with the possibility of rotation and interacting with the protrusions of the tape.

The disadvantages of the worm clamp are the complexity of the design, low manufacturability and use, the possibility of spontaneous unclamping of the clamp under the influence of vibration, the need for great effort when rotating the worm screw to obtain a satisfactory compression force of the connection.

Known "Detachable sealing collar" RU 2067251, IPC F16L 33/00, 1992 [2], containing an elastic tape and a belt tension mechanism, including tension links connected to the ends of the tape, each of which contains a cylindrical hinge with a housing and an axis connected by a coupling screw . The tape at one end has a section with a rectangular hole, a shank and a sealing element inside the hole so that the tape passed through the rectangular hole of the tension link formed on the section with the rectangular hole in the direction from the inner loop to the outer double loop covers the sealable hose connection .

The disadvantages of the detachable sealing collar are the complex design, low manufacturability and the need for a large pulling force due to the coverage of the sealed connection with a double loop to obtain a satisfactory compression force of the connection.

Closest to the claimed technical solution is the "Worm clamp" RU 2144158, IPC F16L 33/08, 1997 [3], containing a metal tape rolled into a ring having a housing from one end with a worm screw located inside the housing, protrusions from the other end or slots that, when tightening the clamp, sequentially interact with the worm screw. To prevent spontaneous unclamping of the clamp under the influence of vibration, the clamp is equipped with a locking bar installed between the housing and the screw head with the possibility of rotation and interaction with the protrusions or slots of the tape, fixing the tape from displacement in a fixed position.

The disadvantages of the worm clamp are the complexity and unreliability of the design, low manufacturability and use, the need for great effort when rotating the worm screw to obtain a satisfactory compression force of the connection with the worm clamp.

The technical result of the invention is to simplify the design, increase the manufacturability of the clamp, reduce the cost of production and improve the technical characteristics.

The technical result is achieved by the fact that in a detachable crimp collar containing a flexible tape with embossed protrusions along the entire length, a locking device at one end of the tape with a shank aligning the internal profile of the clamp at the section where the tape enters the locking device, and a tightening device, in contrast to the known analogues, the tightening device is removable in the form of a separate device for tightening the clamp with great effort, more than the force with which you can tighten the clamp manually, detachable crimp clamp made of plastic and in combination with other materials, for example, a flexible tape and a locking device made of plastic in the form of a single cast, relief projections on a flexible tape are made, for example, in the form of transverse teeth having an inclination towards the locking device, the locking device is made, for example , in the form of a case equipped with a through slot for passing the tape and forming a closed ring with a clamp, and a locking device made, for example, in the form of a spring-loaded one-way fastening inside the case of the feet wedge-shaped, with embossed protrusions, on the side facing the tape in the form of transverse, inclined in the opposite direction, counter teeth engaged with the teeth of the tape, and with a dog to open the locking device so that the locking device rigidly fixes the tape in the tightened position of the clamp and releases it when unclenching and removing the clamp, and the tightening device is made, for example, metal and in combination with other materials in the form of a U-shaped body with a supporting heel for supporting on a catch device, with a tension screw located in the housing, rotatably fixed and provided with a convenience, for example, a lamb, and a slider interacting with the tension screw with the possibility of movement and provided, for example, with a slot, a locking wedge device with a wedge made with relief projections on the side facing the tape in the form of transverse, inclined in the opposite direction, response teeth that interact, mesh with the teeth of the flexible tape, and the tape wedges it is rigidly fixed in the slider when tightening the clamp, while rotating the tension screw in the direction of tightening the clamp and is released by turning the tension screw in the opposite direction to remove the tightening device.

In FIG. 1 and 2 are schematic drawings of the proposed detachable crimp clamp.

FIG. 1 - fragment detachable crimp clamp with a locking device, section;

FIG. 2 - a fragment of a detachable crimp clamp with a tightening device, when tightening the clamp, section.

Fixation and sealing of the connection using a detachable crimp clamp is as follows. A clamp is sealed with a clamp, for which flexible tape 1 is passed through the through slot of the locking device 2 to form a closed ring. In this case, the transverse teeth 3 on the outer side of the flexible tape 1 elastically slide along the oppositely directed response teeth 4 of the stopper 5, spring-loaded to interact with the tape 1 by one-sided fastening inside the housing 6. For the end of the tape 1 passed through the locking device 2, tighten the clamp manually and manually crimp the joint to be sealed. After crimping, due to the elastic reaction of the clamp, the flexible tape 1 tends to move in the opposite direction through the locking device 2, but the oppositely directed response teeth 4 of the stopper 5 and the teeth 3 of the tape 1 are engaged and the stopper 5 due to the spring-loaded fastening inside the housing 6 and the inclined the implementation of the teeth rigidly fixes the tape from displacement in the locking device 2, preventing spontaneous unclamping of the clamp. To obtain, if necessary, a large crimping force of the sealable joint, further tightening of the clamp is carried out using a tightening device 7. For this, the end of the flexible tape 1 is passed through a slider 8 provided with a slot and a locking wedge device 9. In this case, the teeth 3 on the outside of the tape 1 slide on the counter teeth of the wedge 10 having an opposite slope. Pulling the tape 1 through the slider 8, the tightening device 7 is pressed by the supporting heel 11 to the locking device 2. Next, by rotating the tension screw 12 provided with a lamb, the final tightening of the crimp clamp is made. When the tensioning screw 12 is rotated, the slider 8 interacting with it moves and moves in the direction of tightening the clamp flexible tape 1, fixed in the slider 8 by the wedging action of the wedge 10. When tightening the clamp, the counter teeth of the wedge 10 of the locking wedge device 9 engage with the teeth 3 on the outside of the flexible tape 1 and the wedge 10, shifting, wedges the tape 1, firmly fixing it in the slider 8. To release the tape 1 and remove the tightening device 7, the tension screw 12 is turned in the opposite direction. The implementation of the stopper 5 in the form of a wedge additionally increases the rigidity of fixation of the flexible tape 1 in the locking device 2 and the reliability of the detachable crimp clamp due to the jamming action of the stopper 5 when plastic deformations of the locking device 2 appear, at high clamping forces that are extreme for the clamp.

Simplification of the design, manufacture, cheaper production is achieved by making the tightening device removable as a separate device, as well as through the use of plastic in the manufacture of the clamp, which reduces the cost of manufacturing a detachable crimp clamp.

The increase in technical characteristics is achieved by using the advantages of plastic as a material, for example, corrosion resistance and alkali and acid resistance, high dielectric properties. Due to the smooth inner surface of the detachable crimp clamp, the flexibility of the plastic tape and the fact that the plastic has a lower coefficient of friction than the metal tape, the sealing of the joints is improved. The technological effectiveness of using the clamp increases, the clamp can be tightened manually, where it is enough, and using a tightening device. A single crimp collar of the same length (size) can be used in a wide range of smaller diameters of the sealed joints. Multiple clamps can be joined together to seal large diameter joints.

Industrial application.

The present invention can find wide application in industry and in everyday life as a hose clamp (clamp) for hoses, for sealing joints on pipelines for various purposes, operating at low and medium pressure, as well as a coupling clamp.

Claims (5)

1. A detachable crimp clamp containing a flexible tape with embossed protrusions on the outside and a tightening device, characterized in that the clamp is made of plastic and is equipped at one end of the tape with a locking device with a slot, with a locking device and a shank aligning the internal profile of the clamp, and the tightening device is made in the form of a removable leaning on the locking device when tightening the clamp and crimping the sealed connection with greater force than when tightening the clamp "by hand". 2. The detachable crimp clamp according to claim 1, characterized in that the relief protrusions on the outside of the tape are made along the entire length of the tape in the form of transverse teeth having an inclination. 3. The detachable crimp clamp according to claim 1, characterized in that the locking device is made in the form of a spring-loaded stopper in the form of a wedge with embossed protrusions in the form of reciprocal transverse inclined teeth with a dog for opening the locking device. 4. The detachable crimp clamp according to claim 1, characterized in that the tightening device comprises a housing with a supporting heel, in which are located a tension screw and a slider interacting with the ability to move the slider inside the housing. 5. The detachable crimp clamp according to claim 4, characterized in that the slider comprises a slit, locking the wedge device with a wedge provided with relief protrusions in the form of reciprocal transverse inclined teeth, which engages and rigidly fixes the flexible tape in the slider when tightening the clamp and releases tape when removing the tightening device.

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