An elevator traction engine and an elevator installement

Abstract

The invention is an elevator traction engine comprises, an electric engine having a stator (51) and a rotor (52);a body (10) carrying the said electrical engine (50); a rotatable driveshaft (20) is driven by the electrical engine (50) and having at least two traction zones (21) and at least a brake (30), characterized by the said body (10) having a two integrated body parts (11) wherein body parts (11) comprises a carrier portion (13) is formed to fix the stator (51) in the body (10) by contacting at least one portion of the outer surface of stator (512) when they connect to each other and a mounting extension (12) is provided with a bending portion (111) at the section of which the carrier portion (13) ends to provide connection of the body (10) to a fixed point.

Description

TECHNICAL FIELD

[0001] An invention relates to an elevator traction engine for elevator system.BACKGROUND OF THE INVENTION

[0002] Elevator cabins are moved in a substantially linearly extending, generally four-walled, and rectangular cros-sectioned elevator shafts by the help of a traction motor. A power provided by traction engine moves the elevator cabin by pulling or relasing a rope which one end is connected to a fixed point and other end is connected to a counter-weight or the elevator cabin by passing through a roller that is connected to counter-weight.

[0003] Elevator traction engines have cast iron bodies that are formed by CNC machines or similar forming tools. Reducing wall thickness below 12 mm for cast iron bodies is technically difficult and also non-cost effective. Therefore, a weight of an elevator traction engine having a cast iron body for an average elevator cabin in market is very high. For an elevator with 800 kg bearing capacity, a traction structure (body of engine and engine itself) is about 160-250 kg and a chasis for fix the structure to a fixed point is about 100 kg are used. In the mentioned elevator systems, a traction engines are mounted on elevator cabin rails, engine rooms, beams provided on the rails or ceilings by the means of mounting.

[0004] All of these mounting locations have limited space of movement, and as the weight increases, the assembly process becomes more difficult, and in addation to that the use of extra mounting elements extends the assembly time. Besides, heavy components can damage the mounting point and so they reduce the service life. The same problems also continue during the maintenance of the system. An excessive weight of the said components causes the engine to have balance problems at the point where it is assembled.

[0005] Morever, casting molds, CNC machines and similar processing devices are required for producing such a cast iron body so the initial investment costs for mentioned production process can be very high.

[0006] An elevator traction engine having a similar body to bodies mentioned-above is disclosed in the document with publication number of EP2871147A1. For a disclosed engine, the body is defined as a cast iron or steel. It is disclosed that the thickness of the body should be at least wider than 10 mm, prefably, wider than 20 mm.

[0007] Yet another major problem in achieving stability in said electric elevator traction motor structures is the way of positioning the transfer elements, i.e. the rope or belts.

[0008] The document with publication number of EP1741661B1 discloses an elevator installation is driven by a traction engine and defines two traction zones. Both of the said traction zones are provided on the right or on the left of the engine. Such an arrangment causes the center of gravity of the traction motor to move away from the body center to the electric motor. Thus, weight of the elevator cabin and counter-weight together cause stress on the body and on the mounting sections. In the mentioned document discloses supporting elements are used to compensate the traction engine and central supporting elements are used to compensate for the radial force generated in the engine shaft.

[0009] The utility model document with the publication number CN2051985U relates to a traction engine for elevators, which is suitable for a light loading passenger elevator, a residential lift, and a human and goods elevator within 0.5 metre per second. The utility model is provided with electric motors which can output shafts leftwards and rightwards and are connected in flanged type.

[0010] As a result, all above-mentioned problems necessitate an innovation in the respective field.OBJECT OF THE INVENTION

[0011] The present invention aims at overcoming the above-mentioned problems and achieving an innovation in the respective technical field.

[0012] The object of the invention is to present a lighter and more stable elevator traction motor structure, particularly by means of modifications provided on the body.

[0013] Another object of the invention is to provide an elevator traction engine structure with reduced total volume by the innovations provided in the structure of the electric engine inside the body.

[0014] Another object of the invention is to eliminate the balance elements' requirement on the traction engine for balancing purposes.

[0015] Another object of the invention is to present more cost effective elevator traction engine and production process.BRIEF DESCRIPTION OF THE PRESENT INVENTION

[0016] In order to fulfill all of the objects to be appreciated from above-mentioned and the following description in detail, the present invention is an elevator traction engine for elevator system having an electric engine having a stator and a rotor; a body carrying the said electrical engine; a rotatable driveshaft is driven by the electrical engine and having at least two traction zones and at least a brake. Thus, the said body having a two integrated body parts wherein body parts comprises a carrier portion is formed to fix the stator in the body by contacting at least one portion of the outer surface of stator when they connect to each other and a mounting extension is provided with a bending portion at the section of which the carrier portion ends to provide connection of the body to a fixed point.

[0017] In a preferred embodiment the present invention comprises another bending portion on the end of the mounting portion to form a base.

[0018] In a preferred embodiment of the present invention, the stator is provided in polygonal form and the said body part comprises the bending portions such that corresponds to the polygonal form of the stator when the body parts are connected to each other.

[0019] In a preferred embodiment of the present invention, the polygonal form is a hexagon.

[0020] In a preferred embodiment of the present invention, the polygonal form is an octagon.

[0021] An alternative embodiment of the present invention comprises the body is provided in a prismatic form and a lid having a bearing on the center of it that covers top and / or base section of the body.

[0022] A preferred embodiment of the present invention comprises transfer apertures on the carrier portion such that enables to entrance and exit of the transfer means to inside of the body.

[0023] In a preferred embodiment of the present invention, one of the traction zones is provided on the right side of the stator, the other one is on the left side.

[0024] In a preffered embodiment of the present invention, the stator is positioned approximately in the middle of the body.

[0025] In a preferred embodiment of the present invention, the traction zones are inside of the body.

[0026] In a preferred embodiment of the present invention, the traction zones are provided on surface of the driveshaft.

[0027] In an alternative embodiment of the present invention, traction zones are pulleys which are positioned on the driveshaft.DESCRIPTION OF THE FIGURES

[0028] Figure 1, 1.A and 1.B are representative drawings of the alternative embodiments of the elevator traction engine body. Any connection means or fittings are shown in mentioned figures. Figure. 1. C, 1.D and 1.E are schematic drawings of alternative embodiments of the body in FIG 1.B with assemble positions on various surfaces. Figure 1.F is a right perspective view of the preffered embodiment of elevator traction engine body. Figure 1.G is a disassembled form of the structure is shown in Figure 1.F. Figure 1.H is an isometric view of Figure 1.G. Figure 2 is a schematic drawing of the elevator traction engine. Positioning of electric engine is also shown in this figure. Figure 2.A is a schematic drawing of embodiment with an alternative positioning of the electric engine to the positioning of Figure 2 Figure 2.B is a schematic drawing of alternative embodioment of the elevator traction engine. Positioning of the rotor, stator and transfer means arealso shown in this figure. Figure 2.C is an alternative positioning of the rotor-stator to the positioning of Figure 2.B. Figure 3 is an isometric view of the preffered embodiment of elevator traction engine. Figure 3.A is a front view of the Figure 3 without one of the body part. Figure 3.B is an isometric view of Figure 3.A. Figure 3.C is a front view of the Figure 3 without the lid. Figure 4 is a front isometric view of the embodiment of elevator traction engine mounted on a guide rail of the elevator system. Figure 4.A is isometric back view of Figure 4. Figure 5 is a front isometric view of the embodiment of elevator traction engine mounted on a vertical surface of the elevator system. In this embodiment, vertical surface mounting is provided by a connection element. Figure 5.A is an isometric view of the connection element of Figure 5. Figure 5.Bis an exploded view of the connection element of Figure 5.A. Figure 6-6.C are schematic views of the elevator installations assembled with an embodiment of the elevator traction engine. REFERENCE NUMBERS OF THE DRAWNINGS

[0029] 1. Traction engine 10. Body 11. Body part 111. Bending portion 12. Mounting extension 121. Mounting slot 122. Connection mean 123. Connection element 1231. Primary connection element 12311. Mounting extension part 12312. Primary adjustment slot 12313. Screw slot 1232. Secondary connection element 12321. Surface extension slot 12322. Secondary adjustment slot 12323. Channel 13. Carrier portion 131. Contact surface 14. Centering extension 141. Hanger slot 15. Transfer aperture 20. Driveshaft 21. Traction zone 30. Lid 40. Transfer means 50. Electric engine 51. Stator 511. Coil winding 512. Stator surface 52. Rotor 521. Magnet 60. Counter weight guide 61. Counter weight rail 70. Roller F. Brake K. Hoistway A. Elevator cage KA. Counter weight KR. Guide rail L. Length of contact surface Y. Surface S. Fixed surface T. Ceiling room DETAILED DESCRIPTION OF THE INVENTION

[0030] In this detailed description, an elevator traction engine and an elevator installement are disclosed by way of examples, but not by way of limitation only in order that the subject matter may be more fully understood.

[0031] An elevator traction engine (1) for elevator system essentially comprises, an electric engine having a stator (51) and a rotor (52); a body (10) carrying the said electrical engine (50); a rotatable driveshaft (20) is driven by the electrical engine (50) and having at least two traction zones (21); at least a brake (30); the said body (10) having a two integrated body parts (11) wherein body parts (11) comprises a carrier portion (13) is formed to fix the stator (51) in the body (10) by contacting at least one portion of the outer surface of the stator (512) when they connect to each other and a mounting extension (12) is provided with a bending portion (111) at the section of which the carrier portion (13) ends to provide connection of the body (10) to a fixed point.

[0032] Referring to Figure 1-1. B; the body (10) of the traction motor (1) comprises at least two body parts (11). Said body parts (11) are configured to support the electric motor (50) when assembled. The electric motor (50) is arranged to rotate a shaft (20). The body parts (11) are selected from a material with proper bending resistance for bending processes and strong enough to carry the electric motor (50). The material is selected between, preferably metals or metal alloys, specifically, iron and aluminium. Alternatively, a composite material may be used as a body (11). Specifically, the selected material is suitable for bending, especially, for press brake bending. Furthermore, the wall thickness of material is prefably below 10 mm. An embodiement is shown in Figure 3, a material is selected as a sheet metal and the wall thickness is 6 mm and as a result the elevator traction engine which weighs 90 kg is obtained.

[0033] The electric motor (50) is provided in the body (10) comprises a stator (51) and a rotor (52). The body parts (1) essentially comprise two sections. The term of "two sections" only defines region of the body part (11) and the body part (11) is definitely a monolithic. Said two portions are separated from each other by a bending portion (110).

[0034] In a preferred embodiment, the body parts (11) are completely identical. This structural preferences make easier to assembly of the parts to each other and also simplifies and speeds up the production process of the body parts (11).

[0035] The body parts (11) may be connected to each other by nut, screw or similar connection means or by welding or similar methods. Connection alternatives are obvious for skilled person in the art.

[0036] The carrier section (13), which is the first part of he sections are separated from each other by the bending portion, is formed so that at least a portion is in contact with the outer surface (512) of the stator (51).

[0037] The carrier section (13) may be formed so that fully contact with the outer surface (512) of the stator (51) but also there are similar embodiements to Figure 3 which some regions of the carrier portion (13) does not provide contact.

[0038] Preferably, both the stator (51) and the body (10) are in prismatic form, in particular polygonal prismatic form.

[0039] In the embodiement of the body (10) shown in Figure 1, the stator (51) is selected in circular form and correspond to that the carrier sections are in partially circular that form a circular form same as form of the stator (51) when they connect each other.

[0040] The bending portion (111) is provided in portion where the circular forms of related carrier part (13) ends. The bending portion (111) changes the continuous direction of extension of the body part (11) to form a mounting extension (12).

[0041] The embodiments of the body (10) shown in Figure 1.A and 1.B are in polygonal form, preferably in prism form. Preferably, the prismatic polygonal carrier section (13) may be in a hexagon form in Figure 1.A or in an octagon form in Figure 1.B. Also, it is possible to provide different polygonal forms.

[0042] Preferably, the base and the top are open for said forms of body (10). In preferred embodiments of the invention, the said open portions are closed by a lid (30). A bearing (31) is positioned at the center of the cover (30). A driveshaft (20) is centered with the help of the bearing (31). Preferably, said lids (30) are configured to not interfere with the function of a brake (F) to be connected to it.

[0043] In Figure 1.B, the carrier part (13) is shown by dashed lines only on the one of body parts (11). A similar representation should be assumed to be provided in Figure 1.C. The contact surfaces (131) that forms the edge of the polygonal, is formed by the extra bending portions (111), which creates polygonal form.

[0044] It is advantageous that is said polygonal form and form of stator are identical. Namely; Bending portions (111) are on the body parts (11) provide a wedge effect and prevents sliding of the stator (51). As in the previous embodiment, the bending section (111) is provided with the mounting extension (12) in the region where the carrier section (13) ends.

[0045] The mounting extension (12) is preferably of a vertically extending structure. In particular, when the body parts (11) are joined together, the mounting extensions (12) provided in both body parts (11) are oriented to each other in such a way that they make contact surface to surface, which leads to an advantageous embodiment that increases the strength of the mounting part (12).

[0046] Referring to 1.C-1.D; the mounting extensions (12) so as to provide parallel and surface to surface contact with each other as previously mentioned and beside that it may comprises bending portions (111) to allow the traction motor (1) to be installed in correspond with different inclines and surfaces. For example, in Figure 1.C, a base is formed by bending both mounting extensions (12) in the same direction. In Figure 1.D, alternatively to Figure 1.C, the mounting extensions (12) are bent in the opposite direction to each other. Thus, a wider base was formed. The bases provided with bending portions (111) on the mounting extension (12) are connected to the surface Y by suitable mounting elements (not shown in the figures).

[0047] In Figure 1.E, any bendings are provided on the said mounting extension (12) and is mounted on a parallel surface with itself.

[0048] In Figure 1.C and 1.D, Even if the the mounting extensions (12) are formed by 90° bending portions (111), more than one bending,it is obvious that forming more than one bending portions (111) and different bending angles are possible for the different surfaces.

[0049] Referring to Figure 1.F and 1.G; in said structure, the body parts (11) are in octagonal form. The bending portion (111) for forming the mounting extension (12) of one of the body parts (11) is provided in the middle of one of the edges and the other bending portion (111) is likewise provided in the other body part (11) in a corresponding manner. It is advantageous that the bendings are provided approximately in the middle of the edge for the stability of the traction engine (1), even if the bending is not exactly in the middle.

[0050] Similarly, on the other end of the body part (11), respect to the mounting extension (12), a centering extension (14) is provided by the bending portion (111) similar manner to the mounting extension (12) is provided. The centering extensions (14) are provided in the manner of contact to each other surface to surface.

[0051] A hanger slot (141) may be formed on the centering extension (14). The hanger slot (141) enables hanging the traction engine (1) is hanged, according to the regulations. Preferably, the hanger slot (141) is positioned on the centering extension (14).

[0052] Figure 2 is a schematic drawing of the elevator traction engine (1). As explained before, the traction engine (1) comprises the electric motor (50) and the electric motor (50) provides rotational movement for the driveshaft (20).

[0053] At least two traction zones (21) that related to the said driveshaft (20) are provided. The traction zones (21) are regions that provides transfer of power from the driveshaft (20) to the transfer means (40). The transfer means (40) is rope, belt or similar are made by suitable material for the counter-weight (KA) or the elevator cage (A).

[0054] Said transfer element (40) may be comprises of single or multiple cables, or may be provided in coatings on such cables. Transfer means (40) may comprise ribs or teeth which are suitably formed or it may be completely smooth. For more effective power transfer from driveshaft (20), the traction zones (21) may comprises corresponding ribs or teeth.

[0055] The traction zones (21) may be provided on the surface of the driveshat (20). In addition to that, the pulley that are rotatable together with the driveshaft (20) may be the traction zones (21).

[0056] The traction zones (21) may be provided inside of the body (10) or may also be provided outside if the driveshaft (20) extends outside the body (10). Although, it provided in the body in the preffered embodiement.

[0057] In Figure 2, the stator (51) and the rotor (52) are positioned to abut or very close to the left portion of the body (10) and the brake (F) is positioned on the right side. Alternatively, the brake (F) may be positioned on the left, the stator (51) and rotor (52) is positioned on the right.

[0058] In Figure 2.A, the stator (51) is arranged such that it remains in or near the center of the body (10). This embodiment provides several advantageous results compared to the embodiment of FIG 2. In this embodiment, the traction zones (21) are provided to the right and left of the stator (51) and the center of gravity moves to the center of the body (10). Herein, the force generated during the movement of the transfer means (40) is evenly distributed on the traction engine (1). This arraignment makes the traction engine (1) stays more stable on the surface (Y) which is mounted and also makes mounting means and the traction engine (10) is more durable. Such an embodiment makes the traction engine (1) much more stable than other cast body engines, especially when provided with a monolithic and balanced body (10).

[0059] Positioning of the stator (51) and the rotor (52) with transfer means which disclosed above is shown in Figure 2.B and 2.C.

[0060] A further advantage of the embodiment shown in Figure 2.A is that it allows for very convenient independent brake (F) mechanisms to be placed at both ends of the body. Accordingly, a double-sided brake (F) structure is much safer and allows the use of smaller diameter and shorter driveshafts compared to one sided brakes.

[0061] Referring to Figure 1.H-3; the transfer apertures (15) are formed on the body (10), which allow the transfer means (40) to enter and exit to the body (10) to be driven by the driveshaft (20).

[0062] As can be seen in Figures 1.H and 3, every body part (11) comprises four transfer apertures (15). The number of transfer apertures (15) can be increased if there are more than two traction zones (21) and corresponding number of transfer means (40) increases. Essentialy, a transfer apertures (15) extending from the both body parts (11) towards the length will be enough for each transfer means (40). If the transfer apertures (15) are provided on one of the body part (11), two of it should be formed on the other body part (11) for every transfer means (40). So, four transfer means (40) is enough for the two traction zones (21) and transfer means (40).

[0063] The reason for having four transfer apertures (15) in each body part (11) in Fig. 1.H-3 is providing the ability to adapt to the elevator installations where the transfer elements are directed differently for the traction motor (1).

[0064] For example, in an elevator installation in Figure 6, the transfer means can enter and exit via opposing transfer apertures (15) also transfer means (40) can enter and exit via the transfer apertures (15) are transverse each other in an elevator installation in Figure 6.C.

[0065] Referring to Figure 3-3.C; as can be seen in this embodiment, the body (10) is provided in the form of an octagonal prism, the base and the top of the prism being closed by the lids (30). A brake (F) is positioned on one of the lids (30).

[0066] Figures 3.A and 3.B shows the internal structure of said embodiment more clearly. The stator (51) is provided in a prismatic octagonal shape and a necessary opening for the rotor (52) is provided at the center of it. Coil windings (511) are arranged in the slots on the stator (51). The outer surface of the prismatic octagon is the stator outer surface (512). A contact surfaces (131), which fit correspondingly such a surfaces, are provided on the body parts (11) by the bending sections (111). As can be seen in Figure 3.C, not all the contact surfaces (131) have to contact the stator outer surfaces (512) so a contact is provided on the four opposing surfaces to achieve the appropriate result in this structure.

[0067] In disclosed embodiments, the electric motor (50) is selected as a synchronous. Referring to Figure 3.C, the magnets (521) are positioned at certain intervals on the outer surface of the rotor (52). The distance between the magnets (521) and the stator (51) is in order of millimeter and such a distance is provided by the centering of the driveshaft (20) by means of the bearings (31) on the lid (30).

[0068] Referring to Figure 1.H; a plurality of mounting slots (121) are formed in order to ensure that the mounting extensions (12) are connected to the suitable surfaces (Y).

[0069] The connection mean (122) connected to the mounting slots (121) fixes the traction engine (1) to a suitable point similarly some intermediate connection element (123) that connected to the mounting slots (121) makes easier to connection to the different surfaces (Y).

[0070] As can be seen in Figure 5, the traction engine (1) may be connected to a vertical surface (Y), e.g wall. Such a connection is provided by a connection element which is connected on the mounting extension and details of the said connection element (12) is given in Figure 5.A and 5.B. The connection element (123) comprises primary and secondary connection elements which are "L" shape cross sectioned, and this parts form "π" shaped structure by overlapping of horizontal extension.

[0071] A mounting extension part (12311) is formed on the vertical extension of primary connection element (1231) to enable connection between the mounting extension (13) and the connection element (123) and also a surface extension slot (12321) is formed on the vertical extension of secondary connection element (1232) for providing connection to the vertical surfaces (Y). The primary and secondary connecting part (1231, 1232) are connected to each other by the primary and secondary adjustment slots (12312, 12322) provided on their horizontal projections being superposed and connected by a connecting means disposed therein. The longitudinal forms of the primary and secondary adjustment slots (12312, 12322) allow adjustment of the length of the connection element (123). Furthermore, a screw slot (12313) and a channel (12323) are provided on the horizontal extensions of the the primary and secondary adjustment slots (1231, 1232).

[0072] Furthermore, the single primary adjustment slots (12312) can be used to connect the body (10) to a base. A connection to the base may be provided by connecting vibration absorbing element to the screw slot (12313) primary adjustment slot (1231). For example, such an arrangement can be used in an installation shown Figure 6.A.

[0073] The primary and secondary connecting elements (1231, 1232) help to provide connection to the vertical surfaces and also form a fixed surface (S) which the counter-weight (K) of the elevator installation is connected.

[0074] A subject-matter of invention is the production method of the traction engine (1) is disclosed below.

[0075] A method essentially comprises steps of; forming a plate having apertures or similar to the transfer apertures (15) in the manner of provide the carrier part (13) of the body part (11), after that, forming the mounting extension by providing bend at the section of which the carrier portion (13) ends, placing the rotor (52) and the stator (51) such that a portion of the outer surface of it contacts at least a portion of the inner surface of the carrier part (13), placing another body part (11) on the first body part (11) so as to surround the stator (51) and after that, connecting the body parts (11) to each other.

[0076] Herein, the carrier portion (13) and the mounting extension (12) may be provided by press machines or bending machines, especially press brake bending machines (also known as akbant bending).

[0077] In a preferred production method, the transfer apertures (15) are formed, preferably by laser cutting, on a plate which is made of suitable material for bending. Then, the plate is bent in such a manner to form half prismatic polygonal, preferably hexagon or octagon, in the bending machine so that the carrier portion (13) is formed. When the prismatic half-polygonal form is formed, the mounting extension (12) is formed by providing a bend in an opposite direction relative to the previous bends, preferably at 90° to the surface on which the bend ends. Similar to the mounting extension (13), a centering extension (14) can be provided on the opposite edge of the plate. So that, the first body part (11) is formed.

[0078] The second body part (11) is formed by bending such that contact the mounting extensions (12) and the centering extensions (14), if there was, fit each other surface to surface.

[0079] The electric motor (50) having a stator (51) which is in the form of prism geometry co-formed with the polygonal form of the body (10) is disposed such that at least a portion of the stator outer surface (521) contacts the first body part (11) and the second body part (11), the mounting extensions (12) and the centering extension (14), if there is, are positioned so that contacts surface to surface with the mounting extension (12) and the centering extension, if there is, of the first body part (11), respectively, and then the first and second body parts (11, 11) are connected to each other. Preferably, the electric motor (50) is disposed in the first body part (11) in such a way as to provide the positioning of Figures 2.A and 2.C.

[0080] Base and top of the polygonal body (10) is covered by a lid (30) having a bearing (31) in the center.

[0081] The driveshaft (20) of the electric motor (50) is centered to the said bearings (31). A break (F) or brakes (F) are connected to one or both of the lids (30).

[0082] Lastly, if necessary, the required removals (e.g mounting slots (121)) are provided on the mounting extension (12) and the centering extension (14). The said removals can also be provided at the beginning of the process, together with forming the transfer apertures (15).

[0083] An elevator installation having the traction engine is above disclosed and arranged in a hoistway (K) essentially comprises; the elevator traction engine (1), according to any claim between 1-17, is mounted on a suitable surface (Y) via the mounting extension (12); the transfer means (40) with both ends connected to fixed surfaces (S) and which is driven by driveshaft (20) of the elevator traction engine (1); at least one guide rail (KR) and an elevator cage (A) is associated with the transfer means (40) and a counter-weight (KA).

[0084] An elevator installation is arranged in a hoistway which is substantially linearly extending, generally four-walled, and rectangular cros-sectioned. Different arrengments is shown in Figure 6-6.C.

[0085] The elevator cage (A) is generally provided between a pair of guide rails (KR) and moves in the orientation of the guide rail (S). Installation also comprises a counter-weight rail (61) for enabling movement of the counter-weight (KA) and a counter-weight guide (60) moves on the said rail. The transfer mean (40) extends in the installation by being arranged between the elevator cage (A) and the counter-weight (KA). This arrangment is provided by various rollers (70) and the rollers (70) change the direction of the transfer mean (40). Herein, the traction engine (10) moves the elevator cage (A) and the counterweight (KA) with in opposite directions respect to each other by driving the transfer means (40).

[0086] In Figure 6, the transfer means (40) extends from a fixed surface (S) to the counter-weight (KA) and reaches to the traction engine (1) by changing direction. The transfer mean (40) passed through the traction engine (1) is connected to another fixed surface (S) on the other side of the hoistway (K) by changing direction by passing through the rollers provided at the base of the elevator cage (A).

[0087] In Figure 6.A, an elevator traction engine (1) is positioned in the ceiling room (T) also known as engine room. A way which followed by transfer mean (40) and connection method of the counter-weight (KA) and the elevator cage (A) is same as the installation is shown in Figure 6. Similarly, an elevator traction engine (1) can be positioned in base of the hoistway (K).

[0088] In Figure 6.B, the transfer means (40) extends from a fixed surface (S) to the roller (70) which the counter-weight (KA) is connected, wherein it reaches to the traction motor (1) by changing direction.

[0089] The transfer mean (40) changed 90° direction by the roller (70) before reaching the traction engine, changes its direction by another roller (70) after reaching the traction engine (1) and connects to the another fixed surface on the other side of the hoistway (K) by passing through another roller (70) which provided on the base of the elevator cage (A)

[0090] In Figure 6.C, the transfer mean (40) is directly connected to the counter-weight (KA). The transfer mean (40) extends from the counter-weight (KA) to a roller (70) and changes direction 90° and wherein changes its direction 90° again by entering the traction engine (1) and directly connects to the elevator cage (A).

[0091] In Figure 4 and 4.A, the traction engine (1) is directly connected to the guide rail (KR). Before disclosed mounting extension (12) is provided such that extending parallelly with guide rail (KR). Thus, surfaces of the mounting extension (12) and the guide rail (KR) directly fits to each other. A connection preferably is provided such that centers of the body (10) and the guide rail (KR) are in the same axis. This provides a much better balance for the traction engine (1).

[0092] The traction engine (1) is fixed to the guide rail (KR) by means of the connection means (122) set in the mounting slots (121) on the mounting extension (12).

[0093] In this structure, i.e positioning in Figure 2.C, balance of the traction engine (1) on the guide rail (KR) is considerably increased by arranging the stator (51) at center of the body or very close the center.

[0094] Herein, arranging the traction zones (21) is equally distant from stator (51) and positioning right and left side on the stator (51) are improve the balance of the traction engine (1).

[0095] The protection scope of the invention is indicated in the appended claims and cannot be restricted to those described for the purpose of illustration in this detailed description. It is apparent that person skilled in the art can reveal similar embodiment in light of what is described above without departing the main subject of the invention.

Claims

1. An elevator traction engine (1) for elevator system comprises, an electric engine having a stator (51) and a rotor (52); a body (10) carrying the said electrical engine (50); a rotatable driveshaft (20) is driven by the electrical engine (50) and having at least two traction zones (21) and at least a brake (30) , characterized by the said body (10) having two integrated body parts (11) wherein body parts (11) comprise: a carrier portion (13) formed to fix the stator (51) in the body (10) by contacting at least one portion of the outer surface of stator (512) when they connect to each other, and a mounting extension (12) provided with a bending portion (111) at the section of which the carrier portion (13) ends to provide connection of the body (10) to a fixed point.

2. The elevator traction engine (1) according to the claim 1, is characterized by comprising another bending portion (111) on the end of the mounting portion (12) to form a base.

3. The elevator traction engine (1) according to the claim 1, 1 is characterized by providing the stator (51) in polygonal form, and the said body part (11) comprises bending portions (111) that correspond to the polygonal form of the stator (51) when the body parts (11) are connected to each other.

4. The elevator traction engine (1) according to the claim 3, characterized by the polygonal form is a hexagon or octagon.

5. The elevator traction engine (1) according to the claim 1, characterized by providing the body (10) in a prismatic form and comprising a lid (30) having a bearing (31) on the center of it that covers top and / or base section.

6. The elevator traction engine (1) according to the claim 1, characterized by transfer apertures (15) on the carrier portion (13), which enables an entrance and an exit of transfer means (40) to inside of the body (10).

7. The elevator traction engine (1) according to the claim 1, characterized by one of the traction zones (21) is provided on the right side of the stator (51), the other one is provided on the left side.

8. The elevator traction engine (1) according to the claim 7, characterized by the stator (51) being positioned approximately in the middle of the body (10).

9. The elevator traction engine (1) according to claim 1, characterized by the traction zones (21 being inside of the body (10).

10. The elevator traction engine (1) according to claim 1, characterized by the traction zones (21) being provided on surface of the driveshaft (20) or by the traction zone being pulleys which are positioned on the driveshaft (20).

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