Compact elevator traction machine with double-supporting structure

Abstract

The utility model discloses a compact elevator traction machine with a double-supporting structure, which relates to the technical field of traction machines and comprises a machine base, a motor, a traction wheel, a speed reducer, a block brake and a supporting frame fixedly mounted on the machine base. The motor and the supporting frame are located on the two sides of the machine base respectively. The speed reducer is fixedly installed on the inner side of the traction wheel and comprises a machine shell and a planet assembly arranged in the machine shell. According to the scheme, a traditional braking structure in which a brake disc is matched with a brake is abandoned, the traction wheel is designed to be provided with the braking part and the rope groove part, the braking part of the traction wheel is directly braked through a block brake, and therefore the braking structure of the traction wheel is improved. According to the utility model, the brake precision is improved, the damage of the brake to the motor can be avoided, and meanwhile, the brake part of the traction wheel is hidden in the opening structure of the base, so that the size of the equipment is reduced, and the structure of the whole equipment is more compact.

Description

Technical Field

[0001] The utility model relates to a compact elevator traction machine with a double-support structure, belonging to the technical field of traction machines. Background Art

[0002] The elevator traction machine is the power equipment of the elevator. The elevator traction machine makes the elevator move up and down by transmitting and transferring power.

[0003] Referring to the patent recently applied for by the applicant: CN216336053U "And an easily adjustable elevator traction machine based on bilateral braking", this solution installs the traction sheave on one side of the machine base, and installs the rotor assembly and stator assembly of the motor inside the machine base to achieve the effect of increasing the strength of the load-bearing machine base and reducing the deformation of the machine base. However, one side of the traction sheave is a cantilever structure, and the traction sheave is prone to tilt during long-term operation, posing a safety risk. Moreover, the brake directly brakes the rotor assembly of the motor. This braking method generates a lot of heat, which affects the service life of the motor. Therefore, it is necessary to improve on this basis to adapt to the use requirements of the modified elevator. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a compact elevator traction machine with a double-support structure.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a compact elevator traction machine with a double-support structure, comprising a machine base, a motor, a traction sheave, a reducer, a block brake, and a support frame fixedly mounted on the machine base; the motor and the support frame are respectively located on both sides of the machine base;

[0006] The reducer is mounted and fixed on the inner side of the traction wheel, and includes a housing and a planetary assembly disposed in the housing; the housing is connected and fixed to the inner peripheral wall of the traction wheel, and the input shaft of the planetary assembly passes through the housing and the base and cooperates with the output shaft of the motor; an extension shaft is fixedly provided on the housing away from the motor side, and the extension shaft extends into the support frame and rotates with the support frame;

[0007] The machine base is a structure with an opening on one side, and the traction sheave has a braking portion and a rope groove portion, wherein the braking portion of the traction sheave is hidden in the opening structure of the machine base, and the rope groove portion of the traction sheave is located outside the opening structure of the machine base;

[0008] There are two block brakes, which are respectively fixed on both sides of the machine base and symmetrically arranged. The two block brakes cooperate with the braking part of the traction wheel from both sides.

[0009] Preferably, the braking portion of the traction sheave is a smooth circumferential surface, and the rope groove portion of the traction sheave has a plurality of groove structures, and the groove structures are used to cooperate with the steel wire rope.

[0010] Preferably, rope blocking rods are provided on both sides of the machine base, and the rope blocking rods cooperate with the rope groove portion of the traction wheel.

[0011] Preferably, an inner end cover is rotatably provided on the extension shaft, an outer end cover is fixedly provided on the outer side of the support frame, and the outer end cover and the support frame are integrally connected and fixed to the inner end cover by a plurality of bolts.

[0012] Preferably, a first bearing is provided between the extension shaft and the inner end cover, and the extension shaft and the inner end cover are rotationally matched through the first bearing; a second bearing is provided between the extension shaft and the support frame, and the extension shaft and the support frame are rotationally matched through the second bearing.

[0013] Preferably, the outer end of the support frame does not exceed the outer end of the base.

[0014] Preferably, openings for the block brake to pass through are provided on both sides of the machine base.

[0015] Preferably, an encoder is provided at the rear end of the output shaft of the motor, a turning shaft is provided at the outer end of the motor, and a turning handwheel is provided at the outer end of the turning shaft.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0017] 1. One side of the traction sheave of the utility model is supported by a motor fixed on the machine base, and the other side of the traction sheave is supported by a support frame fixed on the machine base. Therefore, a bilateral support structure is formed on the left and right sides of the traction sheave to prevent the traction sheave from tilting during operation, thereby improving the safety and stability of the traction sheave operation.

[0018] 2. The utility model abandons the traditional braking structure that uses a brake disc and a brake, and designs the traction sheave into two parts: a braking part and a rope groove part. A block brake is used to directly brake the braking part of the traction sheave, which not only improves the braking accuracy, but also avoids damage to the motor caused by the brake. At the same time, the braking part of the traction sheave is hidden in the opening structure of the machine base, reducing the volume of the equipment and making the structure of the entire equipment more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the utility model is further described below with reference to the accompanying drawings:

[0020] Attachment Figure 1 This is a structural schematic diagram of a compact elevator traction machine with a double-support structure according to the present invention;

[0021] Attachment Figure 2 For attachment Figure 1 Schematic diagram from another perspective;

[0022] Attachment Figure 3 This is a cross-sectional view of a compact elevator traction machine with a double-support structure according to the present invention;

[0023] Attachment Figure 4 This is a schematic diagram of the structure of the utility model without the support frame and the block brake;

[0024] Attachment Figure 5 This is a schematic structural diagram of the traction wheel and reducer of the utility model.

[0025] In the figure: 1. Machine base; 11. Opening structure; 12. Rope stop rod; 13. Opening; 2. Motor; 21. Output shaft; 211. Encoder; 22. Turning gear shaft; 23. Turning gear handwheel; 3. Traction sheave; 31. Braking part; 32. Rope groove part; 4. Reducer; 41. Machine housing; 42. Planetary assembly; 43. Input shaft; 45. Extension shaft; 451. Inner end cover; 452. First bearing; 453. Second bearing; 5. Block brake; 6. Support frame; 61. Outer end cover. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] As attached Figure 1-3 As shown, the utility model describes a compact elevator traction machine with a double support structure, comprising a machine base 1, a motor 2, a traction wheel 3, a reducer 4, a block brake 5 and a support frame 6 fixedly mounted on the machine base 1. The motor 2 and the support frame 6 are respectively located on both sides of the machine base 1. In this embodiment, the support frame 6 is fixed to the machine base 1 by bolts, and the outer end of the support frame 6 does not exceed the outer end of the machine base 1 to prevent the support frame 6 from increasing the length of the base and increasing the volume of the equipment.

[0028] As attached Figure 4-5 As shown, the machine base 1 is a structure 11 with an opening 13 on one side, and the traction sheave 3 has a braking portion 31 and a rope groove portion 32. The braking portion 31 of the traction sheave 3 is hidden in the opening 13 structure 11 of the machine base 1, and the rope groove portion 32 of the traction sheave 3 is located outside the opening 13 structure 11 of the machine base 1. In this embodiment, the braking portion 31 of the traction sheave 3 is a smooth circumferential surface, and the rope groove portion 32 of the traction sheave 3 has a plurality of groove structures, which are used to cooperate with the wire rope. Rope blocking rods 12 are provided on both sides of the machine base 1, and the rope blocking rods 12 cooperate with the rope groove portion 32 of the traction sheave 3 to prevent the wire rope on the traction sheave 3 from falling out of the groove, thereby ensuring the stability of the operation of the traction sheave 3 to a certain extent.

[0029] Two block brakes 5 are provided, and the two block brakes 5 are respectively fixed on both sides of the machine base 1 and are symmetrically arranged. Openings 13 for the block brakes 5 to pass through are opened on both sides of the machine base 1. The two block brakes 5 respectively pass through the openings 13 on both sides of the frame and cooperate with the braking part 31 of the traction wheel 3.

[0030] Compared with the prior art, the present application abandons the traditional braking structure that uses a brake disc and a brake, and designs the traction sheave 3 into two parts, a braking part 31 and a rope groove part 32. The block brake 5 is used to directly brake the braking part 31 of the traction sheave 3, which not only improves the braking accuracy, but also can avoid damage to the motor 2 caused by the brake. The heat generated by the block brake 5 and the braking part 31 of the traction sheave 3 during braking is dissipated from the opening 13 of the machine base 1, thereby improving the heat dissipation efficiency. On the other hand, the braking part 31 of the traction sheave 3 is hidden in the opening 13 structure 11 of the machine base 1, which reduces the volume of the equipment and makes the structure of the entire equipment more compact.

[0031] As attached Figure 1-3 As shown, the reducer 4 is installed and fixed on the inner side of the traction wheel 3. The reducer 4 includes a casing 41 and a planetary assembly 42 arranged in the casing 41; the casing 41 is connected and fixed to the inner circumferential wall of the traction wheel 3, and the input shaft 43 of the planetary assembly 42 passes through the casing 41 and the base 1, and cooperates with the output shaft 21 of the motor 2.

[0032] During operation, the motor 2 transmits power to the planetary assembly 42 through the output shaft 21 to drive the planetary assembly 42 to operate. When the planetary assembly 42 operates, it drives the casing 41 to rotate. Since the casing 41 is fixedly connected to the traction wheel 3, the traction wheel 3 is driven to rotate when the casing 41 rotates.

[0033] An extension shaft 45 is fixedly provided on the casing 41 away from the side of the motor 2. The extension shaft 45 extends into the support frame 6 and rotates with the support frame 6. In this embodiment, the extension shaft 45 is fixed to the casing 41 of the reducer 4 through a flange structure, and an inner end cover 451 is rotatably provided on the extension shaft 45. Specifically, a first bearing 452 is provided between the extension shaft 45 and the inner end cover 451, and the extension shaft 45 and the inner end cover 451 rotate together through the first bearing 452. A second bearing 453 is provided between the extension shaft 45 and the support frame 6, and the extension shaft 45 and the support frame 6 rotate together through the second bearing 453. An outer end cover 61 is fixedly provided on the outside of the support frame 6, and the outer end cover 61 and the support frame 6 are integrally connected and fixed to the inner end cover 451 by multiple bolts to ensure that the extension shaft 45 and the support frame 6 rotate together while providing support for the extension shaft 45.

[0034] One side of the traction sheave 3 is supported by the motor 2 fixed on the machine base 1, and the other side of the traction sheave 3 is supported by the support frame 6 fixed on the machine base 1. Therefore, a bilateral support structure is formed on the left and right sides of the traction sheave 3 to prevent the traction sheave 3 from tilting during operation, thereby improving the operating safety and stability of the traction sheave 3.

[0035] An encoder 211 is provided at the rear end of the output shaft 21 of the motor 2 , a turning shaft 22 is provided at the outer end of the motor 2 , and a turning handwheel 23 is provided at the outer end of the turning shaft 22 .

[0036] The above are only specific application examples of the present utility model and do not constitute any limitation to the protection scope of the present utility model; any technical solutions formed by equivalent transformation or equivalent replacement fall within the scope of protection of the present utility model.

Claims

1. A compact elevator traction machine with a double support structure, characterized in that: It comprises a machine base (1), a motor (2), a traction wheel (3), a speed reducer (4), a block brake (5), and a support frame (6) fixedly mounted on the machine base (1); the motor (2) and the support frame (6) are respectively located on both sides of the machine base (1); The reducer (4) is mounted and fixed on the inner side of the traction wheel (3), and the reducer (4) includes a housing (41) and a planetary assembly (42) arranged in the housing (41); the housing (41) is connected and fixed to the inner peripheral wall of the traction wheel (3), and the input shaft (43) of the planetary assembly (42) passes through the housing (41) and the base (1) and cooperates with the output shaft (21) of the motor (2); an extension shaft (45) is fixedly provided on the housing (41) on the side away from the motor (2), and the extension shaft (45) extends into the support frame (6) and rotates with the support frame (6); The machine base (1) is a structure (11) with an opening (13) on one side, and the traction wheel (3) has a braking portion (31) and a rope groove portion (32), wherein the braking portion (31) of the traction wheel (3) is hidden in the opening (13) structure (11) of the machine base (1), and the rope groove portion (32) of the traction wheel (3) is located outside the opening (13) structure (11) of the machine base (1); Two block brakes (5) are provided. The two block brakes (5) are respectively fixed on both sides of the machine base (1) and are symmetrically arranged. The two block brakes (5) cooperate with the braking part (31) of the traction wheel (3) from both sides.

2. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: The braking portion (31) of the traction wheel (3) is a smooth circumferential surface, and the rope groove portion (32) of the traction wheel (3) has a plurality of groove structures, and the groove structures are used to match the steel wire rope.

3. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: Rope blocking rods (12) are provided on both sides of the machine base (1), and the rope blocking rods (12) cooperate with the rope groove portion (32) of the traction wheel (3).

4. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: An inner end cover (451) is rotatably provided on the extension shaft (45), an outer end cover (61) is fixedly provided on the outer side of the support frame (6), and the outer end cover (61) and the support frame (6) are integrally connected and fixed to the inner end cover (451) via a plurality of bolts.

5. The compact elevator traction machine with a double support structure according to claim 4, characterized in that: A first bearing (452) is provided between the extension shaft (45) and the inner end cover (451), and the extension shaft (45) and the inner end cover (451) are rotationally engaged through the first bearing (452); a second bearing (453) is provided between the extension shaft (45) and the support frame (6), and the extension shaft (45) and the support frame (6) are rotationally engaged through the second bearing (453).

6. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: The outer end of the support frame (6) does not exceed the outer end of the machine base (1).

7. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: Both sides of the machine base (1) are provided with openings (13) for the block brake (5) to pass through.

8. The compact elevator traction machine with a double support structure according to claim 1, characterized in that: An encoder (211) is provided at the rear end of the output shaft (21) of the motor (2), a turning shaft (22) is provided at the outer end of the motor (2), and a turning handwheel (23) is provided at the outer end of the turning shaft (22).

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