A large-load elevator permanent magnet synchronous traction machine

Abstract

The utility model discloses a kind of big load freight elevator permanent-magnet synchronous traction machine, it is related to the technical field of traction machine, including traction wheel, traction wheel is connected with driving structure cooperation, the end coaxially fixedly connected with gear ring of traction wheel away from driving structure;Multiple annular evenly distributed protrusions are integrally arranged on the inner hub of traction wheel;Supporting structure for supporting traction wheel is located inside traction wheel;Driving structure is installed in the inside of shell, the bottom of shell both ends are fixedly connected with underframe;Staff first by pressing push-plate to let telescopic link retract into inner cavity and block synchronous movement, telescopic link is compressed spring when moving;After moving block to the protrusion of traction wheel inner hub, staff releases push-plate, the elastic force of spring can drive telescopic link reset, so as to make multiple block respectively and protrusion clamping, so that main frame is fixedly connected with traction wheel, let supporting shaft cooperate main frame support traction wheel, improve the load capacity of traction wheel.

Description

Technical Field

[0001] This utility model relates to the field of traction machine technology, specifically a permanent magnet synchronous traction machine for heavy-duty freight elevators. Background Technology

[0002] Permanent magnet synchronous traction machines are the core power components of modern elevators. Their key feature is that they use permanent magnets to excite the electromagnetic windings of traditional traction machines, which has advantages such as high efficiency, energy saving, quiet operation, and small size. They have gradually replaced traditional asynchronous traction machines and become the mainstream elevator drive solution.

[0003] Chinese Patent Publication No. CN101804937B discloses a freight elevator traction machine, applicable to elevator traction machines. It includes a motor and a gearbox. The motor uses a permanent magnet synchronous motor as the drive device, and the gearbox uses a planetary gear reducer with a small tooth difference. The output shaft of the gearbox is coaxially mounted with the traction sheave, and the input shaft of the gearbox is coaxially mounted with the rotor of the permanent magnet synchronous motor. A stacked brake and an encoder are sequentially fixed to the outer end face of the permanent magnet synchronous motor. The outer shell of the gearbox, the outer shell of the permanent magnet synchronous motor, and the base of the permanent magnet synchronous motor are cast as a single unit. The output shaft and input shaft inside the gearbox are supported by bearings fixed to the base of the permanent magnet synchronous motor. A protective cover can be added to the outer end of the permanent magnet synchronous motor.

[0004] Freight elevator traction machines are mainly used in freight elevators, which are elevators used to transport goods. The goods are generally heavy, so the car and traction machine, especially the traction sheave of the traction machine, bear a lot of pressure when transferring goods. The traction sheave of the freight elevator traction machine is only fixedly connected to the output shaft of the gearbox, and the output shaft of the gearbox only plays a transmission role and cannot improve the load-bearing capacity of the traction sheave, resulting in poor load-bearing capacity of the traction sheave. Utility Model Content

[0005] The purpose of this utility model is to provide a permanent magnet synchronous traction machine for heavy-duty freight elevators, which uses a support structure to support the traction wheel, thereby improving the load-bearing capacity of the traction wheel and solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heavy-duty freight elevator permanent magnet synchronous traction machine, including

[0008] The traction sheave, used to drive the traction rope, is connected to the drive structure. The end of the traction sheave away from the drive structure is coaxially fixed with a toothed ring. The inner hub of the traction sheave is provided with multiple protrusions that are evenly distributed in a ring.

[0009] The support structure for supporting the traction sheave is located inside the traction sheave; the drive structure is installed inside the housing, and the bottom ends of the housing are fixedly connected to the base frame.

[0010] The support structure includes a support frame assembly, on one side of which a support shaft is fixedly connected to the middle. The end of the support shaft away from the support frame assembly is rotatably connected to multiple bearing seats. The bottoms of the multiple bearing seats are respectively fixedly connected to multiple support frame assemblies.

[0011] The support frame assembly includes a main frame, which is integrally provided with three connecting plates, and all three connecting plates are fixedly connected to the inner hub of the traction sheave by connecting bolts; the middle of the side of the main frame away from the inner hub is fixedly connected to the support shaft.

[0012] The main frame has internal cavities at multiple ends, and telescopic rods are installed in multiple internal cavities. Each telescopic rod has a locking block fixedly connected to the end away from the main frame. Each locking block has a slot in the middle of the side away from the telescopic rod that is the same shape as the protrusion of the traction wheel hub. Each of the multiple internal cavities of the main frame has two springs.

[0013] As a further technical solution of this utility model, the two springs in the multiple inner cavities are symmetrically arranged; one end of the spring is in contact with the inner wall of the main frame, and the other end of the spring is in contact with the end of the telescopic rod away from the locking block.

[0014] As a further technical solution of this utility model, the multiple telescopic rods are movably connected to multiple ends of the main frame, the multiple locking blocks are evenly distributed in a ring, and the positions of the multiple locking blocks correspond to the positions of multiple protrusions in the inner hub of the traction wheel.

[0015] As a further technical solution of this utility model, each of the slots of the multiple card blocks is fitted with a pad block, and the shape of the pad block is the same as the shape of the slot; the side of the pad block away from the card block is in contact with the protrusion of the inner hub of the traction wheel; and the two sides of the multiple pad blocks near the telescopic rod are integrally provided with a lever plate.

[0016] As a further technical solution of this utility model, the support frame assembly includes a frame body, the top middle of which is fixedly connected to the bottom of the bearing seat; both ends of the frame body are integrally provided with bases, and the two bases are respectively fixedly connected to the top of the two base frames.

[0017] As a further technical solution of this utility model, the upper inner side of the frame is integrally provided with reinforcing ribs; the lower inner side of the frame is provided with a horizontal plate, the two ends of which are fixedly connected to the two ends of the frame respectively.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, when installing the main frame, the operator first presses the lever to retract the telescopic rod into the inner cavity, and the locking blocks move synchronously. The telescopic rod compresses the spring as it moves. After the locking blocks are moved to the protrusion on the inner hub of the traction sheave, the operator releases the lever. The elastic force generated by the spring can drive the telescopic rod to return to its original position, thereby allowing multiple locking blocks to engage with the protrusion, thus fixing the main frame to the traction sheave. This allows the support shaft to cooperate with the main frame to support the traction sheave, improving the load-bearing capacity of the traction sheave. The telescopic rod, in conjunction with the spring, allows the main frame to be connected to traction sheaves of different diameters, expanding its applicability.

[0020] 2. In this utility model, the three connecting plates can improve the rigidity of the main frame and prevent the main frame from breaking; the multiple connecting bolts can further improve the connection stability between the main frame and the traction sheave and prevent the main frame from falling off the traction sheave; the multiple pads can reduce the friction between the locking block and the protrusion of the inner hub of the traction sheave and extend the service life of the locking block.

[0021] 3. In this utility model, multiple frames serve to support the bearing seats and the support shaft; the reinforcing ribs and cross plates enhance the load-bearing capacity of the frames, prevent deformation, and extend the service life of the frames. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This utility model Figure 1 Side view.

[0024] Figure 3 This utility model Figure 1 A partial structural diagram.

[0025] Figure 4 This utility model Figure 3 Top view.

[0026] Figure 5 This utility model Figure 4 AA sectional view.

[0027] Figure 6 This utility model Figure 3 A partial structural diagram.

[0028] Figure 7 This utility model Figure 6 The main view.

[0029] Figure 8 This utility model Figure 6 Side view.

[0030] Figure 9 This utility model Figure 8AA sectional view.

[0031] In the diagram: 1-Drive structure, 2-Traction wheel, 3-Gear ring, 4-Locking structure, 5-Outer shell, 6-Base frame, 7-Support structure;

[0032] 71-Bearing frame assembly, 72-Support shaft, 73-Bearing housing, 74-Support frame assembly;

[0033] 711-Main frame, 712-Connecting plate, 713-Connecting bolt, 714-Telescopic rod, 715-Clamping block, 716-Pulling plate, 717-Padded block, 718-Spring, 719-Inner cavity, 741-Frame body, 742-Reinforcing rib, 743-Horizontal plate, 744-Base. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-9 In this embodiment of the utility model, a heavy-duty freight elevator permanent magnet synchronous traction machine includes...

[0036] The traction sheave 2, which is used to drive the traction rope, is connected to the drive structure 1. The end of the traction sheave 2 away from the drive structure 1 is coaxially fixedly connected to the toothed ring 3. The inner hub of the traction sheave 2 is provided with multiple protrusions that are evenly distributed in a ring.

[0037] The support structure 7 is located inside the traction wheel 2 to support the traction wheel 2; the drive structure 1 is installed inside the housing 5, and the bottom ends of the housing 5 are fixedly connected to the base frame 6.

[0038] The support structure 7 includes a support frame assembly 71, on one side of which a support shaft 72 is fixedly connected. The end of the support shaft 72 away from the support frame assembly 71 is rotatably connected to a plurality of bearing seats 73. The bottoms of the plurality of bearing seats 73 are respectively fixedly connected to a plurality of support frame assemblies 74.

[0039] The support frame assembly 71 includes a main frame 711, which has three integral connecting plates 712, and all three connecting plates 712 are fixedly connected to the inner hub of the traction sheave 2 by connecting bolts 713; the middle of the side of the main frame 711 away from the inner hub is fixedly connected to the support shaft 72.

[0040] The main frame 711 has internal cavities 719 at multiple ends, and telescopic rods 714 are provided in each of the internal cavities 719; a locking block 715 is fixedly connected to the end of each telescopic rod 714 away from the main frame 711, and a locking groove with the same shape as the protrusion of the inner hub of the traction sheave 2 is provided in the middle of the side of each locking block 715 away from the telescopic rod 714; two springs 718 are provided in each of the internal cavities 719 of the main frame 711.

[0041] The two springs 718 in the multiple inner cavities 719 are symmetrically arranged; one end of the spring 718 is in contact with the inner wall of the main frame 711, and the other end of the spring 718 is in contact with the end of the telescopic rod 714 away from the locking block 715.

[0042] By adopting the above technical solution, when installing the main frame 711, the operator first presses the lever 716 to retract the telescopic rod 714 into the inner cavity 719, and the locking block 715 moves synchronously. When the telescopic rod 714 moves, it compresses the spring 718. After the locking block 715 is moved to the protrusion on the inner hub of the traction wheel 2, the operator releases the lever 716. The elastic force generated by the spring 718 can drive the telescopic rod 714 to return to its original position, so that multiple locking blocks 715 engage with the protrusion respectively, making the main frame 711 fixedly connected to the traction wheel 2. The support shaft 72 cooperates with the main frame 711 to support the traction wheel 2, improving the load-bearing capacity of the traction wheel 2. The telescopic rod 714, in conjunction with the spring 718, allows the main frame 711 to be connected to traction wheels 2 of different diameters, improving the applicability.

[0043] In this embodiment, multiple telescopic rods 714 are movably connected to multiple ends of the main frame 711, and multiple locking blocks 715 are evenly distributed in a ring, with the positions of the multiple locking blocks 715 corresponding to the positions of multiple protrusions on the inner hub of the traction wheel 2.

[0044] Each of the slots of the multiple card blocks 715 is fitted with a pad 717, and the shape of the pad 717 is the same as the shape of the slot; the side of the pad 717 away from the card block 715 is in contact with the protrusion of the inner hub of the traction wheel 2; both sides of the multiple pads 717 near the telescopic rod 714 are integrally provided with a lever plate 716.

[0045] By adopting the above technical solution, the three connecting plates 712 can improve the rigidity of the main frame 711 and prevent the main frame 711 from breaking. The multiple connecting bolts 713 can further improve the connection stability between the main frame 711 and the traction sheave 2 and prevent the main frame 711 from falling off the traction sheave 2. The multiple pads 717 can reduce the friction between the locking block 715 and the protrusion of the inner hub of the traction sheave 2 and extend the service life of the locking block 715.

[0046] In this embodiment, the support frame assembly 74 includes a frame 741, the top center of which is fixedly connected to the bottom of the bearing seat 73; both ends of the frame 741 are integrally provided with bases 744, and the two bases 744 are respectively fixedly connected to the top of the two base frames 6.

[0047] The upper inner side of the frame 741 is integrally provided with reinforcing ribs 742; the lower inner side of the frame 741 is provided with a horizontal plate 743, and the two ends of the horizontal plate 743 are fixedly connected to the two ends of the frame 741 respectively.

[0048] A locking structure 4 is fixedly connected to the outer shell 5, and the drive structure 1 and the traction wheel 2 are both located inside the locking structure 4.

[0049] By adopting the above technical solution, multiple frames 741 serve to support the bearing seat 73 and the support shaft 72; the reinforcing ribs 742 and the cross plates 743 serve to improve the load-bearing capacity of the frames 741, prevent the frames 741 from deforming, and extend the service life of the frames 741.

[0050] The working principle of this utility model is as follows: When installing the main frame 711, the operator first presses the lever 716 to retract the telescopic rod 714 into the inner cavity 719, and the locking block 715 moves synchronously. When the telescopic rod 714 moves, it will compress the spring 718. After the locking block 715 is moved to the protrusion of the inner hub of the traction wheel 2, the operator releases the lever 716. The elastic force generated by the spring 718 can drive the telescopic rod 714 to return to its original position, so that multiple locking blocks 715 respectively engage with the protrusion, making the main frame 711 fixedly connected to the traction wheel 2. The support shaft 72 cooperates with the main frame 711 to support the traction wheel 2, improving the load-bearing capacity of the traction wheel 2. The telescopic rod 714, together with the spring 718, allows the main frame 711 to be connected to traction wheels 2 of different diameters, improving the applicability.

[0051] The three connecting plates 712 can improve the rigidity of the main frame 711 and prevent the main frame 711 from breaking. The multiple connecting bolts 713 can further improve the connection stability between the main frame 711 and the traction sheave 2 and prevent the main frame 711 from falling off the traction sheave 2. The multiple pads 717 can reduce the friction between the locking block 715 and the protrusions of the inner hub of the traction sheave 2 and extend the service life of the locking block 715.

[0052] Multiple frames 741 serve to support the bearing seat 73 and the support shaft 72; the reinforcing ribs 742 and the cross plates 743 serve to improve the load-bearing capacity of the frames 741, prevent the frames 741 from deforming, and extend the service life of the frames 741.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A permanent magnet synchronous traction machine for a heavy-duty freight elevator, characterized in that: include The traction wheel (2) is used to drive the traction rope to move. It is connected to the drive structure (1). The end of the traction wheel (2) away from the drive structure (1) is coaxially fixedly connected to a toothed ring (3). Multiple protrusions are integrally provided on the inner hub of the traction wheel (2) in a ring-shaped even distribution. The support structure (7) is located inside the traction wheel (2); the drive structure (1) is installed inside the housing (5), and the bottom ends of the housing (5) are fixedly connected to the base frame (6). The support structure (7) includes a support frame assembly (71), a support shaft (72) is fixedly connected to the middle of one side of the support frame assembly (71), and the end of the support shaft (72) away from the support frame assembly (71) is rotatably connected to a plurality of bearing seats (73). The bottom of the plurality of bearing seats (73) is fixedly connected to a plurality of support frame assemblies (74). The support frame assembly (71) includes a main frame (711), which is integrally provided with three connecting plates (712), and the three connecting plates (712) are all fixedly connected to the inner hub of the traction sheave (2) by connecting bolts (713); the middle of the side of the main frame (711) away from the inner hub is fixedly connected to the support shaft (72); The main frame (711) has multiple cavities (719) at its ends, and each of the multiple cavities (719) has a telescopic rod (714); each of the multiple telescopic rods (714) has a fixed connection to a locking block (715) at the end away from the main frame (711), and each of the multiple locking blocks (715) has a locking groove in the middle of the side away from the telescopic rod (714) that is the same shape as the protrusion of the inner hub of the traction wheel (2); each of the multiple cavities (719) of the main frame (711) has two springs (718).

2. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 1, characterized in that: Two springs (718) in the multiple inner cavities (719) are symmetrically arranged; one end of the spring (718) is in contact with the inner wall of the main frame (711), and the other end of the spring (718) is in contact with the end of the telescopic rod (714) away from the locking block (715).

3. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 1, characterized in that: Multiple telescopic rods (714) are movably connected to multiple ends of the main frame (711), and multiple locking blocks (715) are evenly distributed in a ring, with the positions of the multiple locking blocks (715) corresponding to the positions of multiple protrusions on the inner hub of the traction wheel (2).

4. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 1, characterized in that: Each of the slots of the multiple card blocks (715) is fitted with a pad (717), and the shape of the pad (717) is the same as the shape of the slot; the side of the pad (717) away from the card block (715) is in contact with the protrusion of the inner hub of the traction wheel (2); both sides of the multiple pads (717) near the telescopic rod (714) are integrally provided with a lever plate (716).

5. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 1, characterized in that: The support frame assembly (74) includes a frame (741), the top middle of which is fixedly connected to the bottom of the bearing seat (73); both ends of the frame (741) are integrally provided with bases (744), and the two bases (744) are fixedly connected to the top of the two base frames (6) respectively.

6. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 5, characterized in that: The upper inner side of the frame (741) is integrally provided with reinforcing ribs (742); the lower inner side of the frame (741) is provided with a horizontal plate (743), and the two ends of the horizontal plate (743) are fixedly connected to the two ends of the frame (741).

7. The heavy-duty freight elevator permanent magnet synchronous traction machine according to claim 1, characterized in that: The outer shell (5) is fixedly connected to a locking structure (4), and the drive structure (1) and the traction wheel (2) are both located inside the locking structure (4).

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