CN220886632U - Traction components and traction machines - Google Patents

Abstract

The utility model discloses a traction assembly and a traction machine, belonging to the technical field of elevator power equipment, wherein the traction assembly includes a brake component, a traction wheel and a main shaft, wherein the traction wheel has two convex ridges, the convex ridges are extended along the circumference of the traction wheel, and a line groove is formed between the two adjacent convex ridges; the first end and the second end of the traction wheel respectively have a first clamping groove and a second clamping groove, at least part of the brake component is located in the first clamping groove, and the main shaft is at least partly located in the second clamping groove, and the first end and the second end of the traction wheel are respectively clamped with the brake component and the main shaft. The traction wheel is respectively clamped with the brake component and the main shaft through the first clamping groove and the second clamping groove, so that the brake component, the traction wheel and the main shaft are processed in sections; after the section processing, the traction assembly is simple to assemble, and only the traction wheel needs to be specially processed. When the traction wheel is processed by nitrogen-carbon-oxygen composite treatment, only the traction wheel needs to be processed, and the main shaft and the brake component do not need to be specially processed, thereby improving the processing efficiency and reducing the processing cost.

Description

Traction components and traction machines

Technical Field

The utility model belongs to the technical field of elevator power equipment, and in particular relates to a traction component and a traction machine.

Background technique

The traction machine is the core driving component of the elevator and is called the "heart" of the elevator. As the power source of the elevator, its vibration and noise performance directly affect the user's elevator riding experience. As market competition becomes increasingly fierce, the performance indicators of elevators in terms of comfort, energy saving, environmental protection, high speed and high efficiency are required to be more perfect. In recent years, the steel belt type has been used as the latest generation of traction machines. Compared with traditional wire rope traction machines, the steel belt type has many advantages. The traction sheave shaft that matches the steel belt is the core component, and its manufacturing process and cost directly affect the quality and cost of the steel belt machine.

The existing steel belt traction sheave shaft generally adopts an integrated structure, but the integrated traction sheave shaft has the following disadvantages: the overall cutting amount is large, the surface of the traction sheave needs to be processed, the production efficiency is low, and the processing accuracy is low; moreover, the brake disc of the brake section is connected to the main shaft by interference fit + key, which is difficult to assemble.

Summary of the invention

The utility model aims to provide a traction assembly and a traction machine, which can reduce the waste of raw materials, improve production efficiency, increase processing accuracy and simplify assembly.

Research has found that when one-piece integral cutting is processed using nitrogen-carbon-oxygen composite treatment, the traction wheel shaft needs to be heated for a long time, which requires a large amount of heat energy, and the entire wheel shaft occupies a large space in the heat treatment equipment, resulting in reduced production efficiency and increased costs. Due to the slender structure, the dimensions before and after heat treatment change, and the parts with higher precision need secondary processing, which will also lead to increased costs. When using hard chrome plating technology, hard chrome will also be plated on the surface that is not required for functional replacement, wasting chrome plating electrolyte and causing cost increases. Due to the slender structure and large overall area, point differences are formed on the surface of the workpiece during the electrolysis process, which can easily cause uneven thickness of the coating, affecting the size and life of the workpiece.

The technical solution is as follows:

A traction assembly comprises a brake component, a traction wheel and a main shaft, wherein the outer wall of the traction wheel has at least two ridges, the ridges are extended along the circumference of the traction wheel, and a wire groove is formed between two adjacent ridges;

The first end and the second end of the traction wheel respectively have a first slot and a second slot, at least part of the braking component is located in the first slot, and at least part of the main shaft is located in the second slot, and the first end and the second end of the traction wheel are respectively engaged with the braking component and the main shaft.

In one embodiment, the braking component has a first boss, the traction wheel has a wheel body, a second boss and a third boss, and the main shaft has a fourth boss;

The second boss, the wheel body and the third boss are connected in sequence, the first slot is formed in the second boss, the second slot is formed in the third boss, at least part of the first boss is located in the first slot and is used to abut against the second boss; at least part of the fourth boss is located in the second slot and is used to abut against the third boss.

In one embodiment, the first card slot or the second card slot includes a first groove and a second groove, the first groove is connected to the second groove, the first boss or the fourth boss is located in the first groove, the braking component also has a first connecting shaft, and the main shaft also has a second connecting shaft, and at least a portion of the first connecting shaft or the second connecting shaft is located in the second groove.

In one embodiment, the first boss or the fourth boss is conical, and the brake component also has a brake body, the largest end of the first boss is connected to the brake body, and the smallest end of the first boss faces the first slot; the main shaft also has an axis body, the largest end of the fourth boss is connected to the axis body, and the smallest end of the fourth boss faces the second slot.

In one embodiment, the third boss or the second boss has a limiting groove on its circumference, and the fourth boss or the first boss has a limiting block, and the limiting block is engaged with the limiting groove.

In one embodiment, the second boss, the wheel body, the third boss and the ridge are an integrated structure, and the ridge is located on the outer wall of the wheel body.

In one embodiment, the braking component has a first pin hole, the main shaft has a second pin hole, the first end and the second end of the traction wheel both have a fixing pin, the fixing pin is at least partially located in the first pin hole or the second pin hole, and the first end and the second end of the traction wheel are respectively clamped to the braking component and the main shaft through the fixing pin.

In one embodiment, the brake component or the main shaft is at least partially made of cast iron, and the traction wheel is at least partially made of alloy steel.

The utility model also proposes a traction machine, comprising a first seat body, a second seat body, a connecting beam and the traction assembly as described above, wherein the first seat body and the second seat body are arranged opposite to each other, and the first seat body is connected to the second seat body through the connecting beam; the braking component of the traction assembly is installed on the first seat body, the main shaft of the traction assembly is installed on the second seat body, and the traction wheel is located below the connecting beam.

In one embodiment, the first seat body has a first bearing seat and a first bearing, and the first bearing is installed in the first bearing seat; the second seat body has a second bearing seat and a second bearing, and the second bearing is installed in the second bearing seat; the first bearing is sleeved on the first end of the traction wheel, and the second bearing is sleeved on the second end of the traction wheel.

The technical solution provided by the utility model has the following advantages and effects:

1. At least part of the brake component is located in the first clamping groove of the traction wheel, at least part of the main shaft is located in the second clamping groove, the traction wheel is clamped with the brake component and the main shaft through the first clamping groove and the second clamping groove respectively, so that the brake component, the traction wheel and the main shaft are processed in sections; after the section processing, the traction component is easy to assemble, and only the traction wheel needs to be specially processed, which reduces the waste of raw materials; when the traction wheel is processed by the nitrogen-carbon-oxygen composite treatment, only the traction wheel needs to be processed, and the processing parts are less, and the main shaft and the brake component do not need special processing, which improves the processing efficiency and reduces the processing cost; at the same time, only the traction wheel needs to be hard chrome plated, and the characteristics of chromium are used to improve the hardness, wear resistance, temperature resistance and corrosion resistance of the traction wheel, reduce the waste of chrome plating electrolyte, reduce the overall volume of the processing structure, and it is not easy to cause uneven thickness of the plating layer, so as to avoid affecting the size and life of the workpiece; the waste of raw materials is reduced, the production efficiency is improved, the processing accuracy is improved, and the assembly is simplified.

2. The first boss and the second boss are engaged in a snap-fit manner, and the third boss and the fourth boss are engaged in a snap-fit manner, so as to improve the connection stability between the brake component and the traction wheel, and improve the connection stability between the traction wheel and the main shaft.

3. At least part of the first connecting shaft or the second connecting shaft is located in the second groove, thereby increasing the overlap length between the traction wheel and the braking component and the main shaft, respectively, and further improving the connection stability between the braking component, the traction wheel and the main shaft.

4. The first boss and the fourth boss are cone-shaped, and the largest end of the first boss is connected to the brake body. After the first boss cooperates with the second boss, the largest end of the first boss is located at the connection between the two, thereby increasing the contact area between the first boss and the second boss, increasing its force-bearing surface, and improving the connection stability between the first boss and the second boss; similarly, after the fourth boss cooperates with the third boss, the largest end of the fourth boss is located at the connection between the two, thereby increasing the contact area between the fourth boss and the third boss, increasing its force-bearing surface, and improving the connection stability between the fourth boss and the third boss.

5. The limit block and the limit groove are clamped to limit the first boss and the second boss, so that the first boss and the second boss rotate synchronously in the circumferential direction, thereby improving the structural integrity of the brake component and the traction wheel; at the same time, it is also used to limit the third boss and the fourth boss, so that the third boss and the fourth boss rotate synchronously in the circumferential direction, thereby improving the structural integrity of the traction wheel and the main shaft.

6. The second boss, the wheel body, the third boss and the ridge are an integrated structure, which improves the structural integrity of the traction shaft.

7. By using a fixing pin in conjunction with the first pin hole or the second pin hole, the traction wheel can be respectively engaged with the brake component and the main shaft, thereby improving the connection stability of the traction wheel with the brake component and the main shaft through the fixing pin; ensuring that the traction wheel, the main shaft and the brake component are prevented from axial movement during rotation, thereby improving the safety factor of the traction assembly.

8. The main shaft and brake parts are made of cast iron, which reduces the amount of machining and material waste compared to the original solution. Compared with the overall processing of the traction wheel shaft, the brake parts and main shaft are replaced by low-priced cast iron materials instead of high-priced alloy materials, and the surface is not subjected to wear-resistant hardening and anti-corrosion treatment, which reduces material costs. Moreover, after the brake parts are processed separately, the assembly difficulty of interference fit + key fit is reduced, the pressure plate parts are reduced, and the overall cost is reduced.

9. The traction assembly is applied to the traction machine. Its segmented connection design reduces the manufacturing cost of the traction machine and facilitates the subsequent assembly of the traction machine.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural cross-sectional view of a traction assembly in one embodiment of the utility model.

FIG. 2 is an exploded view of the structure of a traction assembly in one embodiment of the utility model.

FIG3 is an exploded view of the structure of a traction machine in another embodiment of the present invention.

FIG. 4 is a structural schematic diagram 1 of a traction machine in another embodiment of the present utility model.

FIG. 5 is a structural schematic diagram 1 of a traction machine in another embodiment of the present utility model.

Description of reference numerals:

100, traction assembly; 1, brake component; 11, brake body; 12, first boss; 13, first connecting shaft; 14, first pin hole; 2, traction wheel; 21, first slot; 211, first groove; 212, second groove; 22, second boss; 23, third boss; 231, second slot; 24, ridge; 25, fixing pin; 26, wire groove; 27, limiting groove; 28, wheel body; 3, main shaft; 31, fourth boss; 32, shaft body; 33, second connecting shaft; 34, limiting block; 35, second pin hole; 200, traction machine; 41, first seat body; 42, second seat body; 43, first bearing seat; 431, first bearing; 44, second bearing seat; 441, second bearing; 45, gasket; 46, connecting beam.

Detailed ways

In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

Unless specifically stated or defined otherwise, the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

Research has found that when one-piece integral cutting is processed using nitrogen-carbon-oxygen composite treatment, the traction wheel shaft needs to be heated for a long time, which requires a large amount of heat energy, and the entire wheel shaft occupies a large space in the heat treatment equipment, resulting in reduced production efficiency and increased costs. Due to the slender structure, the dimensions before and after heat treatment change, and the parts with higher precision need secondary processing, which will also lead to increased costs. When using hard chrome plating technology, hard chrome will also be plated on the surface that is not required for functional replacement, wasting chrome plating electrolyte and causing cost increases. Due to the slender structure and large overall area, point differences are formed on the surface of the workpiece during the electrolysis process, which can easily cause uneven thickness of the coating, affecting the size and life of the workpiece.

In order to solve the above technical problems; as shown in Figures 1 to 3, a traction assembly 100 includes a braking component 1, a traction wheel 2 and a main shaft 3, the outer wall of the traction wheel 2 has at least two ridges 24, the ridges 24 are extended along the circumference of the traction wheel 2, and a wire groove 26 is formed between the two adjacent ridges 24; wherein the first end and the second end of the traction wheel 2 respectively have a first clamping groove 21 and a second clamping groove 231, at least a part of the braking component 1 is located in the first clamping groove 21, the main shaft 3 is at least partially located in the second clamping groove 231, and the first end and the second end of the traction wheel 2 are respectively clamped with the braking component 1 and the main shaft 3. At least part of the brake component 1 is located in the first slot 21 of the traction wheel 2, and at least part of the main shaft 3 is located in the second slot 231. The traction wheel 2 is respectively connected with the brake component 1 and the main shaft 3 through the first slot 21 and the second slot 231, so that the brake component 1, the traction wheel 2 and the main shaft 3 are processed in sections. After the section processing, the traction component 100 is easy to assemble, and only the traction wheel 2 needs to be specially processed, and the main shaft 3 and the brake component 1 do not need to be additionally processed, and the entire section of the traction component 100 does not need to be cut, thereby reducing the waste of raw materials. After the nitrogen-carbon-oxygen composite processing When processing the traction wheel 2, only the traction wheel 2 needs to be processed, and the processing parts are relatively few. The main shaft 3 and the brake component 1 do not need special processing, which improves the processing efficiency and reduces the processing cost. At the same time, only the traction wheel 2 needs to be hard chrome plated, and the properties of chromium are used to improve the hardness, wear resistance, temperature resistance and corrosion resistance of the traction wheel 2, thereby reducing the waste of chrome plating electrolyte caused by processing the main shaft 3 and the brake component 1, reducing the overall volume of the processing structure, and not easily causing the phenomenon of uneven thickness of the coating, thereby avoiding affecting the size and life of the workpiece. It is achieved to reduce the waste of raw materials, improve production efficiency, improve processing accuracy, and simplify assembly.

As shown in Fig. 1 and Fig. 2, the brake component 1 has a first boss 12, the traction sheave 2 has a wheel body 28, a second boss 22 and a third boss 23, and the main shaft 3 has a fourth boss 31; the second boss 22, the wheel body 28 and the third boss 23 are connected in sequence, a first clamping groove 21 is formed in the second boss 22, a second clamping groove 231 is formed in the third boss 23, at least part of the first boss 12 is located in the first clamping groove 21, and is used to abut against the second boss 22; at least part of the fourth boss 31 is located in the second clamping groove 231, and is used to abut against the third boss 23. The first boss 12 is snap-fitted with the second boss 22, and the third boss 23 is snap-fitted with the fourth boss 31, so as to improve the connection stability between the brake component 1 and the traction sheave 2, and improve the connection stability between the traction sheave 2 and the main shaft 3. In this embodiment, the overall outer diameter of the traction wheel 2 is close. Compared with the integrated traction wheel shaft, the turning of this traction wheel 2 reduces a lot of processing volume and reduces the waste of materials. Its processing length is shortened, which reduces the processing cost and material cost. During the surface hardening treatment, energy consumption and consumables are reduced, the space occupied by the surface treatment equipment is reduced, the production efficiency is improved, and the cost is reduced.

As shown in Fig. 1 and Fig. 2, the first clamping groove 21 or the second clamping groove 231 includes a first groove 211 and a second groove 212, the first groove 211 is connected to the second groove 212, the first boss 12 or the fourth boss 31 is located in the first groove 211, the brake component 1 also has a first connecting shaft 13, the main shaft 3 also has a second connecting shaft 33, and at least part of the first connecting shaft 13 or the second connecting shaft 33 is located in the second groove 212. By at least part of the first connecting shaft 13 or the second connecting shaft 33 being located in the second groove 212, the overlap length of the traction wheel 2 with the brake component 1 and the main shaft 3 is increased, and the connection stability between the brake component 1, the traction wheel 2 and the main shaft 3 is further improved.

As shown in Fig. 1 and Fig. 2, the first boss 12 or the fourth boss 31 is in a cone shape, the brake component 1 also has a brake body 11, the largest end of the first boss 12 is connected to the brake body 11, and the smallest end of the first boss 12 faces the first slot 21; the shape of the first boss 12 matches the shape of the first slot 21, the main shaft 3 also has a shaft body 32, the largest end of the fourth boss 31 is connected to the shaft body 32, the smallest end of the fourth boss 31 faces the second slot 231, and the shape of the fourth boss 31 matches the shape of the second slot 231. The first boss 12 and the fourth boss 31 are in a cone shape, and the largest end of the first boss 12 is connected to the brake body 11. Since the largest end of the first boss 12 is located at the connection between the two after the first boss 12 is matched with the second boss 22, the contact area between the first boss 12 and the second boss 22 is increased, the force-bearing surface thereof is increased, and the connection stability between the first boss 12 and the second boss 22 is improved. Similarly, after the fourth boss 31 is matched with the third boss 23, the largest end of the fourth boss 31 is located exactly at the connection between the two, thereby increasing the contact area between the fourth boss 31 and the third boss 23, increasing its force-bearing surface, and improving the connection stability between the fourth boss 31 and the third boss 23.

As shown in Fig. 2 and Fig. 3, the third boss 23 or the second boss 22 has a limiting groove 27 in the circumferential direction, and the fourth boss 31 or the first boss 12 has a limiting block 34, and the limiting block 34 is engaged with the limiting groove 27. The limiting block 34 is engaged with the limiting groove 27 to limit the first boss 12 and the second boss 22, so that the first boss 12 and the second boss 22 rotate synchronously in the circumferential direction, thereby improving the structural integrity of the brake component 1 and the traction wheel 2; and it is also used to limit the third boss 23 and the fourth boss 31, so that the third boss 23 and the fourth boss 31 rotate synchronously in the circumferential direction, thereby improving the structural integrity of the traction wheel 2 and the main shaft 3.

As shown in FIG2 , the second boss 22, the wheel body 28, the third boss 23 and the ridge 24 are an integrated structure, and the ridge 24 is located on the outer wall of the wheel body 28. The second boss 22, the wheel body 28, the third boss 23 and the ridge 24 are an integrated structure, which improves the structural integrity of the traction shaft 2; and when processing the wire groove 26, the outer surface of the wheel body 28 is cut, so that the outer wall of the traction sheave 2 forms the ridge 24.

As shown in Fig. 2 and Fig. 3, the brake component 1 has a first pin hole 14, the main shaft 3 has a second pin hole 35, the first end and the second end of the traction wheel 2 both have a fixing pin 25, the fixing pin 25 is at least partially located in the first pin hole 14 or the second pin hole 35, and the first end and the second end of the traction wheel 2 are respectively engaged with the brake component 1 and the main shaft 3 through the fixing pin 25. By using the fixing pin 25 to cooperate with the first pin hole 14 or the second pin hole 35, the traction wheel 2 can be respectively engaged with the brake component 1 and the main shaft 3, thereby improving the connection stability of the traction wheel 2 with the brake component 1 and the main shaft 3 respectively through the fixing pin 25; ensuring that the traction wheel 2, the main shaft 3 and the brake component 1 are prevented from axial movement during rotation, thereby improving the safety factor of the traction assembly 100.

In addition, the brake component 1 or the main shaft 3 is at least partially made of cast iron, and the traction wheel 2 is at least partially made of alloy steel. The main shaft 3 and the brake component 1 are made of cast iron material, which reduces the amount of machining and material waste compared to the integrated traction wheel shaft. Compared with the integrated traction wheel shaft processed as a whole, the brake component 1 and the main shaft 3 are replaced by low-priced cast iron materials instead of high-priced alloy materials, and the surface is not subjected to wear-resistant hardening and anti-corrosion treatment, which reduces material costs. Moreover, after the brake component 1 is processed separately, the assembly difficulty of interference fit + key fit is reduced, the pressure plate parts are reduced, and the overall cost is reduced.

As shown in Figures 3 to 5, the utility model also proposes a traction machine 200, including a first seat body 41, a second seat body 42, a connecting beam 46 and the traction assembly 100 as described above, wherein the first seat body 41 and the second seat body 42 are arranged opposite to each other, and the first seat body 41 is connected to the second seat body 42 through the connecting beam 46; the brake component 1 of the traction assembly 100 is installed on the first seat body 41, the main shaft 3 of the traction assembly 100 is installed on the second seat body 42, and the traction wheel 2 is located below the connecting beam 46. The traction assembly 100 is applied to the traction machine 200, and its segmented connection design reduces the manufacturing cost of the traction machine 200, and facilitates the subsequent assembly of the traction machine 200. The first seat body 41 and the second seat body 42 are used to support the traction assembly 100, thereby improving the stability of the operation of the traction assembly 100.

As shown in FIGS. 3 to 5 , the first seat body 41 has a first bearing seat 43 and a first bearing 431, and the first bearing 431 is installed in the first bearing seat 43; the second seat body 42 has a second bearing seat 44 and a second bearing 441, and the second bearing 441 is installed in the second bearing seat 44; the first bearing 431 is sleeved on the first end of the traction wheel 2, and the second bearing 441 is sleeved on the second end of the traction wheel 2. The first bearing 431 and the second bearing 441 are used to reduce the friction resistance of the traction assembly 100 and the first seat body 41 and the second seat body 42 in rotation, so that the rotation is smoother and the energy consumption is reduced. The bearing can support the traction assembly 100, reduce the friction coefficient, and ensure the rotation accuracy. The bearing plays a role in fixing and reducing the load friction coefficient in the mechanical transmission process. The rotating "axis" and the rotating support part will have friction, and the bearing can prevent such force from being damaged and keep the rotation smooth.

In the traction machine 200, due to the error in the machining accuracy of the bearing seat or the bearing, the first bearing 431 or the second bearing 441 may cause axial deviation in the first bearing seat 43 or the second bearing seat 44, thereby affecting the normal operation of the traction machine 200. A gasket 45 is set on one side of the first bearing 431 or the second bearing 441 to limit the movement of the first bearing 431 and the second bearing 441 in the bearing seat. The function of the gasket 45 is to fill the gap between the bearing and the bearing seat, maintain the correct position of the bearing, and ensure that the traction machine 200 can operate normally. The gasket 45 can increase the stability and safety of the traction machine 200. They can maintain the correct position and prevent the traction machine 200 from abnormal vibration or imbalance due to axial deviation.

The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The traction assembly is characterized by comprising a braking component, a traction sheave and a main shaft, wherein at least two ridges are arranged on the outer wall of the traction sheave, the ridges extend along the circumferential direction of the traction sheave, and a wire slot is formed between two adjacent ridges;

The first end and the second end of the traction sheave are respectively provided with a first clamping groove and a second clamping groove, at least part of the braking component is located in the first clamping groove, at least part of the main shaft is located in the second clamping groove, and the first end and the second end of the traction sheave are respectively connected with the braking component and the main shaft in a clamping mode.

2. The traction assembly of claim 1, wherein the brake member has a first boss, the traction sheave has a wheel body, a second boss, and a third boss, and the main shaft has a fourth boss;

The second boss, the wheel body and the third boss are sequentially connected, the first clamping groove is formed in the second boss, the second clamping groove is formed in the third boss, and at least part of the first boss is positioned in the first clamping groove and is used for being abutted with the second boss; at least part of the fourth boss is positioned in the second clamping groove and is used for being abutted with the third boss.

3. The traction assembly of claim 2, wherein the first or second clamping groove includes a first groove and a second groove, the first groove in communication with the second groove, the first or fourth boss being located within the first groove, the brake member further having a first connecting shaft, the main shaft further having a second connecting shaft, at least a portion of the first or second connecting shaft being located within the second groove.

4. The traction assembly of claim 2, wherein the first boss or the fourth boss is tapered, the brake member further having a brake body, a maximum end of the first boss being connected to the brake body, a minimum end of the first boss being oriented toward the first clamping groove; the spindle is further provided with a spindle body, the maximum end of the fourth boss is connected with the spindle body, and the minimum end of the fourth boss faces the second clamping groove.

5. The traction assembly according to claim 2, wherein the third boss or the second boss has a limit groove in a circumferential direction, and the fourth boss or the first boss has a limit block thereon, and the limit block is engaged with the limit groove.

6. The traction assembly of claim 2, wherein the second boss, the wheel body, the third boss, and the ridge are an integral structure, and the ridge is located on an outer wall of the wheel body.

7. The traction assembly of any one of claims 2-6, wherein the brake member has a first pin bore, the main shaft has a second pin bore, the first and second ends of the traction sheave each have a securing pin, the securing pins are located at least partially within the first pin bore or the second pin bore, and the first and second ends of the traction sheave are engaged with the brake member and the main shaft, respectively, by the securing pins.

8. The hoisting assembly of any one of claims 2-6, wherein the brake member or the main shaft is at least partially made of cast iron and the traction sheave is at least partially made of alloy steel.

9. A traction machine, characterized by comprising a first base, a second base, a connecting beam and the traction assembly according to any one of claims 1 to 8, wherein the first base is arranged opposite to the second base, and the first base is connected with the second base through the connecting beam; the braking part of the traction assembly is arranged on the first seat body, the main shaft of the traction assembly is arranged on the second seat body, and the traction wheel is positioned below the connecting beam.

10. The hoisting machine of claim 9 wherein the first housing has a first bearing housing and a first bearing, the first bearing being mounted in the first bearing housing; the second seat body is provided with a second bearing and a second bearing, and the second bearing is arranged in the second bearing seat; the first bearing is sleeved at the first end of the traction sheave, and the second bearing is sleeved at the second end of the traction sheave.