A dual support structure brake rear mounted tractor

Abstract

This utility model provides a brake-driven traction machine with a dual-support structure, including a base, a traction sheave, a main shaft, a stator winding core, a rotor, and a brake. A front support frame is provided at the front end of the traction sheave. The front end of the main shaft is mounted on the front support frame via a self-aligning roller bearing, and the rear end of the main shaft is mounted on the base via a deep groove ball bearing. A rear end cover is provided at the rear end of the base, and the brake is located on one side of the rear end cover. The brake-driven traction machine with a dual-support structure provided by this utility model uses a cantilever structure, unlike other brake-driven traction machines on the market. This utility model places the load center between the self-aligning roller bearing and the deep groove ball bearing, maximizing the strength of the main unit. After the traction machine is loaded, it will not experience severe head-nodding deformation, and the deformation of the base will be smaller, preventing interference between the brake sheave and the base. The front support frame is not connected to the base, reducing the complexity of changing the traction sheave and lowering costs.

Description

Technical Field

[0001] This utility model relates to the field of traction machines, and in particular to a rear-mounted brake traction machine with a double-support structure. Background Technology

[0002] As the core power component of an elevator system, the structural stability of the traction machine directly affects the operational safety and service life of the equipment. Currently, most commercially available rear-mounted brake traction machines employ a cantilever design. When bearing the load of the elevator car and counterweight, this structure concentrates the load at the cantilever end, causing significant "nodding" of the drive shaft. In severe cases, this can lead to mechanical interference between the brake wheel and the machine base, reducing braking reliability and accelerating component wear. Furthermore, in traditional designs, the brake is typically mounted on the front of the machine base. During braking, the combined effect of spring pressure and bolt preload further exacerbates structural deformation of the machine base. Therefore, a rear-mounted brake traction machine with a dual-support structure is needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a rear-mounted brake traction machine with a dual-support structure that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A brake-driven traction machine with a dual-support structure includes a base, a traction sheave, a main shaft, a stator winding core, a rotor, and a brake. The base has a motor annular cavity, the stator winding core is disposed within the motor annular cavity, and the rotor is sleeved outside the stator winding core and connected to the main shaft. The traction sheave is disposed at the front end of the rotor and connected to the rotor. A front support frame is provided at the front end of the traction sheave. The main shaft passes through the front support frame, the rotor, and the base. The front end of the main shaft is mounted on the front support frame via a self-aligning roller bearing, and the rear end of the main shaft is mounted on the base via a deep groove ball bearing. A rear end cover is provided at the rear end of the base, and the brake is disposed on one side of the rear end cover.

[0006] Preferably, the main shaft is provided with a first stepped portion and a second stepped portion, the self-aligning roller bearing is disposed at the first stepped portion, and the deep groove ball bearing is disposed at the second stepped portion.

[0007] Preferably, the front support frame includes a support frame body, the support frame body is provided with a support hole concentric with the main shaft, and a support seat integrally connected to the support frame body is provided below the support frame body. The support seat extends outward from both sides of the support frame body, and the bottom of the support seat is provided with mounting holes.

[0008] Preferably, the support base is provided with reinforcing ribs.

[0009] Preferably, the front support frame is provided with a front end cover corresponding to the support hole.

[0010] Preferably, bearing chambers are provided between the front support frame and the main shaft, and between the machine base and the main shaft, and the self-aligning roller bearing and the deep groove ball bearing are respectively disposed in the bearing chambers.

[0011] Preferably, the rotor is connected to the main shaft by a key.

[0012] Preferably, an encoder is provided at the end of the main shaft near the brake.

[0013] The beneficial effects of this utility model are as follows: The dual-support structure of the brake-driven rear-mounted traction machine provided by this utility model uses a dual-support structure. Compared with the cantilever structure of brake-driven rear-mounted traction machines on the market, this utility model places the load center between the self-aligning roller bearing and the deep groove ball bearing, which can maximize the strength of the main unit. After the traction machine is loaded, there will be no severe head-nodding deformation, and the deformation of the machine base will be smaller, preventing interference between the brake wheel and the machine base. The front support frame is not connected to the machine base, which reduces the complexity of changing the traction sheave and also reduces costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0017] The components include: base 1, traction sheave 2, main shaft 3, first step 31, second step 32, stator winding core 4, rotor 5, brake 6, motor annular cavity 7, front support frame 8, support frame body 81, support base 82, mounting hole 83, reinforcing rib 84, front end cover 85, self-aligning roller bearing 9, deep groove ball bearing 10, rear end cover 11, and encoder 12. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] In the description of this utility model, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figures 1 to 3 As shown, this utility model provides a brake-driven traction machine with a double-support structure, comprising a base 1, a traction sheave 2, a main shaft 3, a stator winding core 4, a rotor 5, and a brake 6. The base 1 has a motor annular cavity 7, the stator winding core 4 is disposed within the motor annular cavity 7, and the rotor 5 is sleeved outside the stator winding core 4 and connected to the main shaft 3 via a key. The traction sheave 2 is located at the front end of the rotor 5, is concentrically arranged with the rotor 5, and is connected to the rotor 5.

[0021] Furthermore, a front support frame 8 is provided at the front end of the traction sheave 2, and the main shaft 3 passes through the front support frame 8, the rotor 5, and the base 1. Bearing chambers are provided between the front support frame 8 and the main shaft 3, and between the base 1 and the main shaft 3. Self-aligning roller bearings 9 and deep groove ball bearings are respectively installed in the bearing chambers. The front end of the main shaft 3 is mounted on the front support frame 8 via the self-aligning roller bearing 9, and the rear end of the main shaft 3 is mounted on the base 1 via the deep groove ball bearing 10. A rear end cover 11 is provided at the rear end of the base 1, and a brake 6 is provided on one side of the rear end cover 11. An encoder 12 is provided at the end of the main shaft 3 near the brake 6.

[0022] This invention employs a double-support structure design, positioning the load center between the self-aligning roller bearing 9 and the deep groove ball bearing 10. This maximizes the strength of the main unit and results in less deformation compared to conventional rear-mounted brake traction machines. The main shaft 3 has a first step 31 and a second step 32. The self-aligning roller bearing 9 is positioned at the first step 31, and the deep groove ball bearing 10 is positioned at the second step 32. This design prevents axial displacement of the self-aligning roller bearing 9 and the deep groove ball bearing 10.

[0023] Furthermore, the front support frame 8 includes a support frame body 81, which has a support hole concentric with the main shaft 3. The main shaft 3 passes through the support hole and is mounted on the front support frame 8. A support base 82, integrally connected to the support frame body 81, is provided below the support frame body 81. The support base 82 extends outward from both sides of the support frame body, and has mounting holes 83 at its bottom. Reinforcing ribs 84 are provided on the support base 82, located at the bottom of the support frame body 81 and extending outward from both sides. A front end cover 85 is provided on the front support frame 8 corresponding to the support hole. The bottom of the front support base 8 and the base 1 are on the same horizontal line. The front support frame 8 of this invention does not have a structure connected to the base 1, which reduces the complexity of changing the traction sheave 2 and lowers costs. This structure allows the brake 6 to be mounted on the back of the base 1, minimizing deformation of the base 1 when the brake 6 is in operation and applies spring force and screw counter-tension. Compared to a structure where the brake 6 is placed in front of the base 1, this structure offers higher strength.

[0024] The dual-support structure of the brake-driven rear-mounted traction machine provided by this utility model uses a dual-support structure. Compared with the cantilever structure of brake-driven rear-mounted traction machines on the market, this utility model places the load center between the self-aligning roller bearing 9 and the deep groove ball bearing 10, which can maximize the strength of the main unit. After the traction machine is loaded, there will be no severe head-nodding deformation, and the deformation of the base 1 will be smaller, preventing interference between the brake wheel and the base 1. The front support frame 8 is not connected to the base 1, which reduces the complexity of changing the traction sheave 2 and also reduces costs.

[0025] 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.

[0026] 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 double support structure brake rear-mounted tractor comprising a frame, a traction wheel, a main shaft, a stator winding core, a rotor and a brake, characterized in that: The machine base has a motor annular cavity, the stator winding core is disposed within the motor annular cavity, the rotor is sleeved outside the stator winding core and is connected to the main shaft; the traction sheave is disposed at the front end of the rotor and is connected to the rotor; a front support frame is disposed at the front end of the traction sheave, the main shaft passes through the front support frame, the rotor and the machine base, the front end of the main shaft is disposed on the front support frame via a self-aligning roller bearing, the rear end of the main shaft is disposed on the machine base via a deep groove ball bearing, a rear end cover is disposed at the rear end of the machine base, and a brake is disposed on one side of the rear end cover.

2. The dual support structure brake rear-mount tractor of claim 1, wherein: The main shaft is provided with a first stepped portion and a second stepped portion, the self-aligning roller bearing is provided at the first stepped portion, and the deep groove ball bearing is provided at the second stepped portion.

3. The brake-mounted traction machine with a dual-support structure according to claim 1, characterized in that: The front support frame includes a support frame body, the support frame body is provided with a support hole concentric with the main shaft, and a support seat integrally connected to the support frame body is provided below the support frame body. The support seat extends outward from both sides of the support frame body, and the bottom of the support seat is provided with mounting holes.

4. The rear-mounted brake traction machine with a dual-support structure according to claim 3, characterized in that: The support base is provided with reinforcing ribs.

5. The rear-mounted brake traction machine with a dual-support structure according to claim 4, characterized in that: The front support frame is provided with a front end cover corresponding to the support hole.

6. The rear-mounted brake traction machine with a dual-support structure according to claim 2, characterized in that: Bearing chambers are provided between the front support frame and the main shaft, and between the machine base and the main shaft. The self-aligning roller bearing and the deep groove ball bearing are respectively disposed in the bearing chambers.

7. The rear-mounted brake traction machine with a dual-support structure according to claim 1, characterized in that: The rotor is connected to the main shaft by a key.

8. The rear-mounted brake traction machine with a dual-support structure according to claim 1, characterized in that: An encoder is provided at the end of the main shaft near the brake.

Images