A large-load external rotor shaft brake winch

Abstract

The utility model discloses a big load outer rotor axle brake tractor, related to tractor technical field, including the casing body, the inside cooperation and installation of casing body have stator, the outside cooperation and installation of stator have rotor, then rotor is fixed on transmission shaft, transmission shaft is away from the one end cooperation and installation of stator have axle brake assembly and tractor wheel, wherein axle brake assembly still with outside fixed, then outside fixed in the outside of casing body, be equipped with controller in the top of casing body, when the magnetic core power off, brake spring will armature pop out quickly, armature top brake disc through the tooth cylinder along the gear shaft sliding, and make brake disc and friction disc close, realize transmission shaft brake under the action of friction, axle brake assembly direct action on the axle, relatively simple structure, the number of parts is less, the trouble point also reduces accordingly, and the reliability is higher, and the brake mode of axle brake assembly makes the braking process more stable, and the noise is smaller, is favorable to create the quiet living environment.

Description

Technical Field

[0001] This utility model specifically relates to the field of traction machine technology, and more specifically to a heavy-duty external rotor shaft brake traction machine. Background Technology

[0002] The traction machine is the core drive component of an elevator, often referred to as its "heart," and its safety and reliability directly affect the overall safety and reliability of the elevator. As competition in the elevator market intensifies, miniaturization, thinning, and lightweighting of traction machines are becoming increasingly popular to reduce costs and enhance market competitiveness.

[0003] Chinese Patent Application No. 202222587989.3 provides a machine room-less traction machine and elevator equipment, including a base, a first brake, a second brake, a motor junction box, and a brake junction box.

[0004] The traction machine in the aforementioned patent uses a brake-holding structure, which is a braking method that acts directly on the outer rotor. This braking method has a large contact area between the brake and the outer rotor, resulting in high noise. In particular, heavy-duty elevators require strong braking torque to ensure safe braking. External rotor brake-holding traction machines usually need to arrange two brakes on both sides of the machine base to brake the outer ring surface of the outer rotor, which is relatively complex. The brake pads of the external rotor brake-holding traction machine have a large friction with the outer ring surface of the outer rotor, resulting in relatively severe wear. It is necessary to frequently adjust the gap between the brake pads and the outer ring surface of the rotor, resulting in a large amount of maintenance work and high costs. Utility Model Content

[0005] The purpose of this invention is to provide a heavy-duty external rotor shaft brake traction machine. The brake of the shaft brake traction machine acts directly on the shaft, resulting in a relatively simple structure, fewer parts, fewer potential failure points, and higher reliability. Furthermore, the braking method of the shaft brake traction machine makes the braking process smoother and quieter, contributing to a quieter living environment. This addresses the technical problems mentioned in the background section.

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

[0007] A heavy-duty external rotor shaft brake traction machine, including

[0008] The machine housing has a stator installed inside it; a rotor is installed on the outside of the stator and fixed to a drive shaft; a shaft brake assembly and a traction sheave are installed on the end of the drive shaft away from the stator; the shaft brake assembly is also fixed to an outer side plate, so the outer side plate is fixed to the outside of the machine housing; a controller is provided on the top of the machine housing.

[0009] The axle brake assembly includes a fixed outer shell fixed to the outer side plate; a magnetic core is fixed in the middle of the interior of the fixed outer shell, and multiple through holes are arranged in a ring array on the outer side of the fixed outer shell, and a brake spring is provided in each through hole; the outer end face of the brake spring is in contact with the inner side of the armature.

[0010] The armature has a gear on its inner side; the gear is installed on the drive shaft with an interference fit, and the gear meshes with the gear cylinder welded in the middle of the brake disc.

[0011] More specifically, the armature is slidably connected to the hollow bolt; the hollow bolt is threadedly connected to the fixed housing.

[0012] The hollow bolt has internal threads and is reinforced with a fixing bolt to the fixed housing. The diameter of the armature's shaft hole is smaller than the diameter of the gear cylinder, and the diameter of the armature's shaft hole is larger than the outer diameter of the gear. A friction disc is also provided on the outer side of the brake disc. The friction disc is threadedly connected to the fixing bolt.

[0013] As a further technical solution of this utility model, the outer side of the fixed shell is movably connected to a swing frame arranged in a "Y" shape via a rotating shaft; a groove is provided at the end of the swing frame connected to the fixed shell, and a pushing spring is provided in the groove.

[0014] As a further technical solution of this utility model, the stator is fitted and installed on the shaft cylinder, and a fixing plate is welded to the end of the shaft cylinder; the fixing plate is fixed to the machine housing by bolts.

[0015] As a further technical solution of this utility model, one end of the drive shaft is installed in the shaft cylinder through a bearing; the rotor is installed with an interference fit with the drive shaft; and an encoder is installed at the end of the drive shaft near the fixed disk.

[0016] As a further technical solution of this utility model, a protective cover is provided on the outer side of the traction sheave, and the bottom of the protective cover is open. The protective cover is fixed to the machine housing by bolts.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, when the magnetic core is de-energized, the brake spring quickly ejects the armature; the armature pushes the brake disc to slide along the gear axis through the gear cylinder, and causes the brake disc to close with the friction disc, thereby achieving transmission shaft braking under the action of friction.

[0019] 2. In this utility model, the axle brake assembly acts directly on the axle, which has a relatively simple structure, fewer parts, fewer failure points, and higher reliability; moreover, the braking method of the axle brake assembly makes the braking process smoother and the noise lower, which is conducive to creating a quiet living environment.

[0020] 3. In special circumstances, manual braking is required in this invention. In this case, the swing frame is swung toward the brake disc. The push spring is compressed and its elastic force increases. Then the push spring forcibly pushes out the armature, causing the brake disc and friction disc to close. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This utility model Figure 1 A schematic diagram of the rear structure.

[0023] Figure 3 This utility model Figure 1 A schematic diagram of the internal structure.

[0024] Figure 4 This utility model Figure 1 A schematic diagram of the split structure.

[0025] Figure 5 This utility model Figure 4 Another perspective illustration.

[0026] Figure 6 This utility model Figure 2 A schematic diagram of the planar split structure.

[0027] Figure 7 This is a structural schematic diagram of the axle brake assembly of this utility model.

[0028] Figure 8 This utility model Figure 7 Another perspective illustration.

[0029] Figure 9 This utility model Figure 7 A schematic diagram of the split structure.

[0030] Figure 10 This utility model Figure 9 Another perspective illustration.

[0031] In the diagram: 1-machine housing, 2-stator, 3-rotor, 4-outer side plate, 5-traction sheave, 6-shaft brake assembly, 7-protective cover, 8-drive shaft, 9-controller, 10-shaft cylinder, 11-fixed plate, 12-encoder;

[0032] 61-Fixed outer casing, 62-Magnetic core, 63-Armature, 64-Brake spring, 65-Hollow bolt, 66-Fixing bolt, 67-Gear, 68-Brake disc, 69-Gear cylinder, 610-Swing frame, 611-Push spring, 612-Friction disc. Detailed Implementation

[0033] 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.

[0034] Please see Figure 1-10 In this embodiment of the present invention, a heavy-duty external rotor shaft brake traction machine includes a housing 1, a stator 2 installed inside the housing 1, a rotor 3 installed on the outside of the stator 2, and the rotor 3 fixed on a drive shaft 8; a shaft brake assembly 6 and a traction wheel 5 are installed at the end of the drive shaft 8 away from the stator 2; the shaft brake assembly 6 is also fixed to an outer side plate 4, so the outer side plate 4 is fixed to the outside of the housing 1; a controller 9 is provided on the top of the housing 1.

[0035] The axle brake assembly 6 includes a fixed housing 61 fixed to the outer side plate 4; a magnetic core 62 is fixed in the middle of the interior of the fixed housing 61, and multiple through holes are arranged in a ring array on the outer side of the fixed housing 61, and a brake spring 64 is provided in each through hole; the outer end face of the brake spring 64 is in contact with the inner side of the armature 63.

[0036] The armature 63 has a gear 67 on its inner side; the gear 67 is interference-fitted onto the transmission shaft 8, and the gear 67 meshes with the gear cylinder 69 welded in the middle of the brake disc 68.

[0037] In this embodiment, the armature 63 is slidably connected to the hollow bolt 65; the hollow bolt 65 is threadedly connected to the fixed housing 61.

[0038] The hollow bolt 65 has an internal thread and is reinforced and fixed to the fixed housing 61 by the fixing bolt 66.

[0039] In this embodiment, the diameter of the shaft hole of the armature 63 is smaller than the diameter of the gear cylinder 69, and the shaft hole of the armature 63 is larger than the outer diameter of the gear; a friction disc 612 is also provided on the outer side of the brake disc 68; the friction disc 612 is threadedly connected to the fixing bolt 66.

[0040] By adopting the above technical solution, when in use, with the cooperation of stator 2 and rotor 3, rotor 3 drives transmission shaft 8 and traction wheel 5 to rotate and work; under normal conditions, magnetic core 62 generates magnetic force and attracts armature 63, armature 63 compresses brake spring 64, at which time brake disc 68 has a large range of motion and rotates with gear 67 through gear cylinder 69.

[0041] When the magnetic core 62 is de-energized, the brake spring 64 quickly ejects the armature 63; the armature 63 pushes the brake disc 68 to slide along the gear 67 axially through the gear cylinder 69, and causes the brake disc 68 to close with the friction disc 612, thereby achieving braking of the transmission shaft 8 under the action of friction.

[0042] The axle brake assembly of this invention acts directly on the axle, has a relatively simple structure, fewer parts, fewer potential failure points, and higher reliability. Furthermore, the braking method of the axle brake assembly makes the braking process smoother and quieter, which is conducive to creating a quiet living environment.

[0043] In this embodiment, the outer side of the fixed outer shell 61 is movably connected to a swing frame 610 arranged in a "Y" shape via a rotating shaft; a groove is provided at the end of the swing frame 610 connected to the fixed outer shell 61, and a push spring 611 is provided in the groove.

[0044] By adopting the above technical solution, under special circumstances, it is necessary to manually force the brake to engage; at this time, the swing frame 610 is swung toward the brake disc 68; at this time, the push spring 611 is compressed, the elastic force increases, and then the push spring 611 forcibly pushes out the armature 63, so that the brake disc 68 and the friction disc 612 close.

[0045] In this embodiment, the stator 2 is installed in conjunction with the shaft cylinder 10, and a fixing plate 11 is welded to the end of the shaft cylinder 10; the fixing plate 11 is fixed to the housing 1 by bolts.

[0046] More specifically, one end of the drive shaft 8 is installed inside the shaft cylinder 10 via a bearing; the rotor 3 is installed with an interference fit to the drive shaft 8; and an encoder 12 is installed at the end of the drive shaft 8 near the fixed disk 11.

[0047] By adopting the above technical solution, the setting of the shaft cylinder 10 and the fixed plate 11 provides a reasonable support structure for the stator 2, and one end of the transmission shaft 8 is installed in the shaft cylinder 10 through bearing cooperation, which can not only ensure the support effect of the transmission shaft 8, but also ensure the normal rotation of the transmission shaft 8.

[0048] In this embodiment, a protective cover 7 is provided on the outer side of the traction wheel 5, and the bottom of the protective cover 7 is open. The protective cover 7 is fixed to the machine housing 1 by bolts.

[0049] By adopting the above technical solution, the protective cover 7 can prevent excessive dust from adhering to the traction sheave 5 and the wire rope, and ensure the normal winding and unwinding of the wire rope.

[0050] The working principle of this utility model is as follows: When in use, with the cooperation of stator 2 and rotor 3, rotor 3 drives transmission shaft 8 and traction wheel 5 to rotate and work; under normal conditions, magnetic core 62 generates magnetic force and attracts armature 63, armature 63 compresses brake spring 64, at this time brake disc 68 has a large range of motion and rotates with gear 67 through gear cylinder 69.

[0051] When the magnetic core 62 is de-energized, the brake spring 64 quickly ejects the armature 63; the armature 63 pushes the brake disc 68 to slide along the gear 67 axially through the gear cylinder 69, and causes the brake disc 68 to close with the friction disc 612, thereby achieving braking of the transmission shaft 8 under the action of friction.

[0052] The axle brake assembly of this invention acts directly on the axle, has a relatively simple structure, fewer parts, fewer potential failure points, and higher reliability. Furthermore, the braking method of the axle brake assembly makes the braking process smoother and quieter, which is conducive to creating a quiet living environment.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification 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 large load carrying external rotor shaft brake winch characterised in that: include A housing (1) is provided, and a stator (2) is installed inside the housing (1). A rotor (3) is installed on the outside of the stator (2), and the rotor (3) is fixed on the drive shaft (8). A shaft brake assembly (6) and a traction sheave (5) are installed on the end of the drive shaft (8) away from the stator (2). The shaft brake assembly (6) is also fixed to an outer plate (4), and the outer plate (4) is fixed on the outside of the housing (1). A controller (9) is provided on the top of the housing (1). The axle brake assembly (6) includes a fixed housing (61) fixed to the outer side plate (4); a magnetic core (62) is fixed in the middle of the interior of the fixed housing (61), and multiple through holes are arranged in a ring array on the outer side of the fixed housing (61), and a brake spring (64) is provided in each through hole; the outer end face of the brake spring (64) is in contact with the inner side of the armature (63); The armature (63) is provided with a gear (67) on its inner side; the gear (67) is installed on the transmission shaft (8) with an interference fit, and the gear (67) meshes with the gear cylinder (69) welded in the middle of the brake disc (68).

2. The large capacity external rotor shaft brake winch of claim 1 wherein: The armature (63) is slidably connected to the hollow bolt (65); the hollow bolt (65) is threadedly connected to the fixed housing (61); The hollow bolt (65) has an internal thread and is reinforced by a fixing bolt (66) and a fixing shell (61).

3. The large capacity external rotor shaft brake winch of claim 2 wherein: The diameter of the shaft hole of the armature (63) is smaller than the diameter of the gear cylinder (69), and the shaft hole of the armature (63) is larger than the outer diameter of the gear; a friction disc (612) is also provided on the outer side of the brake disc (68); the friction disc (612) is threadedly connected to the fixing bolt (66).

4. The large capacity external rotor shaft brake winch of claim 3 wherein: The outer side of the fixed outer shell (61) is movably connected to a swing frame (610) arranged in a "Y" shape via a rotating shaft; a groove is provided at the end of the swing frame (610) connected to the fixed outer shell (61), and a push spring (611) is provided in the groove.

5. The large capacity external rotor shaft brake winch of claim 1 wherein: The stator (2) is installed in conjunction with the shaft cylinder (10), and a fixing plate (11) is welded to the end of the shaft cylinder (10); the fixing plate (11) is fixed to the machine housing (1) by bolts.

6. The large capacity external rotor shaft brake winch of claim 5 wherein: One end of the drive shaft (8) is installed in the shaft sleeve (10) through a bearing; the rotor (3) is installed with an interference fit with the drive shaft (8); and an encoder (12) is installed at the end of the drive shaft (8) near the fixed disk (11).

7. The large capacity external rotor shaft brake winch of claim 1 wherein: The traction sheave (5) is provided with a protective cover (7) on its outer side. The bottom of the protective cover (7) is open. The protective cover (7) is fixed to the machine housing (1) by bolts.

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