SU1262639A1 - Electric machine - Google Patents

Abstract

The invention relates to electrical engineering, in particular to the manufacture of electrical installation work on the connection of external electric power supply to an electrical machine. The purpose of the invention is to reduce the weight, size, simplify the manufacturing technology and installation of an electric machine. The electric machine comprises a housing 1, in which a main opening 6 is provided, above which a spacer 7 of the insertion device is fixed directly on the housing using fasteners 8 or by means of a clamping flat element. Directly to the housing 1 is also fixed a one-piece cable sleeve or a sleeve consisting of two detachable parts 13 and 14. The cable sleeve or its part can be fixed by fastener 8 directly on the spacer element 7. In the case 1 of the electric machine, additional openings can be made, closed lids with folded backs (L parts, by which the cable box and the spacer element are pressed against the housing. In the spacer element 7, cable lugs 24 of the cores 25 of the outer supply 16 are attached, to which the cable lugs are attached nicknames 28 lead wires 29 of the electrical machine.3 Cp f-ly, beat. X / «ff ff

Description

The invention relates to electrical engineering and can be used in electrical engineering and in the manufacture of electrical installation, connecting external power supplies to an electrical machine. The purpose of the invention is to reduce the weight, size, simplify the manufacturing technology and installation of an electric machine, I. FIG. 1 - a section, schematically shows a part of the body of an electric machine with a spacer element and a cable box separately attached to the body, a section; on .fig. 2 the same, the cable box is attached to the spacer element, and the housing does not have a neck-tide; in fig. 3 the same, on the side of the insertion device with two additional openings, closed with clamps; in fig. 4 is a section A-A in FIG. 3; in fig. 5 an attachment unit to an electric cable terminator with insulators fixed in it, pressed against the body by a spring-clamp; in fig. 6 - fastening the cable couplings to the machine body with an eccentrically fixed flat element. The device comprises a housing 1 (Figs. 1-6) of an electric machine, which may have a tide 2 (Fig. In the form of a throat, an internal volume 3 of the Fig. 1). There is a ventilation duct between the stator core 4. and 1. 5. B tide-neck 2 (Fig. 1) or directly in the housing 1 (Fig. 2 6) there is a main hole 6, above which a spacing element 7 is fixed directly to the tusk (tide) by means of fastener 8 (Fig. 1, 2 and 4) or with the help of a clamping flat element, for example, a spring clip 9 (FIG. 5), having its fastener 10. Nepos one to the body 1 or the tide 2 (fig. 1) of the case is also fixed to the integral cable sleeve 11 (fig. 6 with fastener 12 or the coupling consisting of two detachable parts 13 and 14 (fig. 1-3). cable sleeve 11 or its part 14, for example, (Fig. 2) can be fastened with fastener 8 directly to the spacer 7 adjacent to the housing 1. Cable sleeve 15 can be in the form of a cable termination (Fig. 5), for example, epoxy type KVETs or from heat shrinkable materials, for example, of type KW and another, in this case such cable coupling 15, performs the function of coupling 11 (13, 1A), may be considered an accessory of the external lead from the cable 16, and not an accessory of the electrical us. In case 1 (Fig. 3) of an electric machine, there may be, for example, additional openings 17 (Fig. 3) and 18 (Figs. 3 and 4), closed with claws 19 and 20, having bent portions 21 and 22, with which the cable box or the spacer or the coupling and the spacer are simultaneously pressed against the housing 1 (Fig. 4). Clamping clips 23 can be mounted on the housing 1. In the spacer element 7, cable lugs 24 of the conductors 25 of the external supply 16 (Figs. 1 and 2) or insulators 26 (Fig. 5) with clamps 27 are fixed. To the clamping part of the cable holders 24 (FIG. 1 and 2) or to the terminal 27 (FIG. 5), the cable lugs 28 of the ground wires 29 (FIGS. 1, 2 and 5) of the electric machine are connected. Inside the cable coupling (Fig. 1) is located the root 30 of the cable terminations, for example, PKV, KVTR and other types. Flat element 31 (Fig. 6) to the housing 1 is fixed eccentrically through the axis 32 and provided with a clamping bolt 33. The device works as follows. In those cases when the ventilation of the duct 5 or the internal volume 3 or special pockets (not shown) allows to place a supply of lead wires 29, then the connection of the external supply 16 with it. elements 30, 25, and 24 are as follows. A cable box 11 with a spacer element 7, in which the cable lugs 24 or the cores 25 or the insulators 26 are pre-secured, is pivoted to an angle sufficient to provide connection to the clamping part of the lugs 24 (Fig. 1 and 2) or to the clamp, 27 (Fig. 5) of the corresponding cable lugs 28 of the lead wires 29. After the contact connections between the lugs 24 and 28 are made, the spacer 7 and the cable gland 11 are turned to their original position and, respectively, separately (FIG. 1 and 4) or jointly (FIG. 2 and 5) fix them to body 1 or tide-neck 2. At the same time, when the specified supply of lead wires must be fixed in volume 3 or in the ventilation duct 5, or in a pocket (not shown), provide additional openings, 17 and 18, through which the performer slides his hands with the tool and secures the wires 29. When the cable box has a connector and consists of two parts 13 and 14 (Fig. 1 and 3), first, this sleeve is disconnected from the housing 1 and removed completely, and the expansion element 7 fixed elements 24 - 26 external supply 16 installed anrt into place without the cable box as well. then install in place the parts 13 and 14 of the cable box. In this case, due to the fact that the cable box has a connector, it is easier to make contact connections, fasten the lugs 24 in the spacer element 7, turn and install the spacer element in place. In those cases when there is no supply of ground wires 29, for example, when this reserve cannot be placed, for example, in order to avoid a violation of the ventilation mode in channel 5, then the connection of cable lugs 28 to the lugs 24 previously secured in the spacer element 7, through additional openings 17 and 18 (Fig. 3). Through these holes, contact connections are operated (i.e., they are periodically checked, tightened). With a detachable spacer element, for example, in the form of clits, the assembly of contact joints is possible through the main hole when the spacer is removed and then the ends 24 are fixed. . When the cable box (Figs. 1 and 3) is detachable, the cable 16 is separated outside the electric machine in the usual order: the spindle 30 is sealed, the wires 25 are clamped (by pressing, soldering, etc.) the lugs 24 or insulators 26 with clamps 27. 2.5 cores (FIG. 5) include B composition

Seal 15, the protruding seal serves as a spacer element 7j

the height of the thread of the bolt 10, and partly of the springiness of the bracket, which at the same time prevents them from turning, plays the role of both the spine 30 of the fitting and the cable box 11. When the cable box is non-detachable, as is the sleeve 11 (Fig. 6), 1, is mounted on the supply cable 16, shifted along the cable so that the cable can be separated, then after the cable has been cut, the cable sleeve is shifted to the spacer element and fixed to the housing 1 or spacer element 7. Fastening the cable lugs 24 (or the cores 25, or isolators 26) in p controversial element 7 is accomplished by many known methods, for example, in the spacer element in the form of crosses with holes and slits to the edge of the openings - holes in lugs institution and squeezing the slits (special fasteners); in the spacer element in the form of detachable clits - the location of the lugs between the clits and the compression of these clits with the corresponding fastener; in a continuous spacer with holes and protruding rigid tubes from the cable coupling side - by seating soft tubes made of heat-shrinkable materials previously put on rigid tubes, and after shrinking, the soft tubes firmly grip both the hard tube and the tail part of the cable tip 24 or vein 25. And in other ways. The fastening of the spacer 7 to the housing 1 and the fastening of the cable box to the housing 1 or to the spacer 7 can be performed in different ways: bolts 8 and 10 (Fig. 1 and 2), bent portions 21 and 22 of covers 19 and 20 or brackets 23 (Fig. 3 and 4), flat elements, such as spring brackets 9 (Fig. 5) or eccentric clamps 31 (Fig. 6). The spring clip 9 may have a slot for moving it relative to the bolt 10 (FIG. 5) fixed to the housing 1, or the bracket 9 with the bolt 10 moves in the corresponding housing for the bolt 10 housing 1. At the same time, different thicknesses (heights) of spacer elements are flat. the couplings, as well as those and others at the same time, taking into account the gaskets between them, the adjustment of the nut on the bolt 10 from the effects of machine vibration is compensated. The scatter of dimensions in diameters (lengths) of cable sleeves and spacers is compensated for by the indicated movement of the bracket 9 in the radial direction. The flat element 31 (Fig. 6) is fixed eccentrically to the housing 1 through axis 32, therefore, the spread in dimensions in diameters (lengths) of cable sleeves and spacers is compensated and adjusted by the eccentricity of the element. After the element 31 is rotated around the axis 32 to the desired angle, this element presses the cable sleeve 11 (or its parts 13 and 14) to the housing through the bolt 33. The variation in the dimensions lio thickness (height) of the pressed parts is compensated for by the axis length 32 and the threads of the bolt 33. Volume 3 under the tide-neck 2 serves to accommodate contact connections of tips 24 and 28, three tips 28 assembled for one bolt and insulated (when connected windings in a star) margin of lead wires. High tide 2 is not required if the dimensions of the ventilation duct 5 are such that the ventilation mode of the cooling of the stator core 4 is not disturbed — after the contact joints, the tips of the wire stock are placed in this channel. If necessary, gaskets can be installed between the housing 1 and the cable box 11 or its parts 13 and 14. or the spacer element 7, or the covers T9 and 20.

2ff 96 between parts 1. p t / 4 k) 1.l-ig1 muff Formula of the invention 1. An electric machine comprising a housing with an opening for connecting current-carrying elements to the ground wires of an electric machine, on which an input device having a cable gland and an expansion element for fixing the current-carrying elements, characterized in that, in order to reduce weight, dimensions, simplify the technology of manufacturing and installation, the spacer element is attached directly to the housing of the electric machine and the cable box is also fixed eposredstvenno on the housing or on the spacer element. 2. The machine according to claim 1, that is, with the fact that you are in the case. At least one additional hole is closed, covered by a bolt. 3. Machine on PP. 1 and 2, that is, with the fact that the aperture of the additional hole is made with bent parts pressing the spacer or cable gland. 4. The machine according to claim 1, wherein the expansion element or cable sleeve is fixed to the housing by means of flat elements, each of which is mounted for movement relative to its attachment point on the housing.

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Claims (4)

Claim 1. An electric machine comprising a housing with a hole for connecting current-carrying elements to the lead wires of an electric machine, on which an input device is installed, having a cable sleeve and an expansion element for fixing current-carrying elements, characterized in that, in order to reduce weight, dimensions, simplify manufacturing and installation technologies, the spacer element is mounted directly on the body of the electric machine, and the cable box is also mounted directly on the body or on the spacer th element. 2. The machine according to Claim. 1, with the fact that you are in the casing. at least one additional hole covered with a lid is filled. 3. The machine according to paragraphs. 1 and 2, which includes the fact that the cover of the additional hole is made with bent parts pressing the spacer element or cable sleeve. 4. The machine according to claim 1, with the fact that the spacer element or cable sleeve is fixed to the housing by means of flat elements, each of which is mounted with the possibility of movement relative to its mounting point on the housing .