Traction machine

Abstract

The present invention discloses a traction machine, which belongs to the technical field of traction machines, wherein the traction wheel, the support shaft, the support seat, the motor assembly, and the heat sink are provided, wherein the traction wheel is sleeved on the outside of the first end of the support shaft, the support seat is sleeved on the second end of the support shaft, and the support shaft and the support seat are rotatably matched; the motor assembly includes a stator component and a rotor component, the stator component is installed on the outside of the support seat, the rotor component is installed on the inside of the traction wheel, and the rotor component is arranged close to the stator component; there is a first heat dissipation channel and a first heat dissipation hole between the support seat and the traction wheel, the heat sink is installed on the outer wall of the support seat, the air outlet direction of the heat sink is toward the first end of the first heat dissipation channel, and the second end of the first heat dissipation channel is connected to the first heat dissipation hole. When the heat sink rotates, the air with heat is accelerated to flow in the first heat dissipation channel, and the heat flows out from the first heat dissipation hole through the first heat dissipation channel, so as to realize the cold and heat exchange inside and outside the traction machine.

Description

Technical Field

[0001] The present invention relates to the technical field of traction machines, in particular to a traction machine. Background Art

[0002] The elevator traction machine is the power equipment of the elevator, also known as the elevator main machine. Its function is to convey and transmit power to make the elevator run. The existing traction machine leads the rotating shaft through the rotor, and then a protruding traction wheel structure is arranged on the protruding rotating shaft, which makes the axial length of the entire structure long and occupies a large amount of installation space. In addition, the rotor of the existing traction machine is placed in the inner cavity, which makes the heat dissipation performance of the motor poor.

[0003] When the heat dissipation performance of the traction machine is poor, it will inevitably affect the working power of the traction machine. Therefore, the working power of the traction machine with poor heat dissipation performance is lower. Summary of the invention

[0004] The object of the present invention is to improve the problem of low power caused by poor heat dissipation performance of existing traction machines and to provide a traction machine.

[0005] The technical solutions to achieve the above objectives include the following:

[0006] The traction machine comprises a traction wheel, a supporting shaft, a supporting seat, a motor assembly, and a heat sink, wherein the traction wheel is sleeved on the first end of the supporting shaft, the supporting seat is sleeved on the second end of the supporting shaft, and the supporting shaft and the supporting seat are rotatably matched;

[0007] The motor assembly comprises a stator component and a rotor component, wherein the stator component is mounted on the outer side of the support seat, and the rotor component is mounted on the inner side of the traction wheel, and the rotor component is arranged close to the stator component;

[0008] A first heat dissipation channel and a first heat dissipation hole are provided between the support seat and the traction wheel. The heat dissipation element is installed on the outer wall of the support seat. The air outlet direction of the heat dissipation element is toward the first end of the first heat dissipation channel. The second end of the first heat dissipation channel is connected to the first heat dissipation hole.

[0009] In one embodiment, a second heat dissipation channel and a second heat dissipation hole are further provided between the support seat and the traction wheel, the first heat dissipation channel is connected with the second heat dissipation channel, the air outlet direction of the heat dissipation element is toward the first end of the second heat dissipation channel, and the second end of the second heat dissipation channel is connected with the second heat dissipation hole;

[0010] Wherein, the first heat dissipation hole and the second heat dissipation hole are arranged far apart.

[0011] In one embodiment, an opening direction of the first heat dissipation hole intersects or is opposite to an opening direction of the second heat dissipation hole.

[0012] In one embodiment, the support seat has a first support member, the first support member is bent, and the first support member has a first side wall and a second side wall;

[0013] The traction wheel has a second support member, the second support member is arranged close to the first side wall and the second side wall, and a receiving groove is formed between the inner side of the second support member and the first side wall and the second side wall;

[0014] The stator component is mounted on the first side wall, and the rotor component is mounted on the inner side of the second support component; the stator component and the rotor component are both arranged in the receiving groove;

[0015] Wherein, the first heat dissipation channel and the second heat dissipation channel are respectively communicated with the accommodating groove.

[0016] In one embodiment, the traction wheel further comprises a rotating wheel, and the second support member is mounted on a side wall of the rotating wheel; the first support member comprises a first support portion and a second support portion, and the first support portion is fixed to the second support portion to form an L-shaped structure;

[0017] A first heat dissipation gap is provided between the second support portion and the second support member, and the first heat dissipation gap forms the first heat dissipation channel; a second heat dissipation gap is provided between the first support portion and the second support portion, and the second heat dissipation channel is formed between the first support portion and the rotating wheel, and the second heat dissipation channel, the containing groove, the second heat dissipation gap, and the second heat dissipation hole are connected in sequence;

[0018] And or / the second heat dissipation channel, the accommodating groove, the second heat dissipation gap, and the air outlet of the heat dissipation element are connected in sequence.

[0019] In one embodiment, the traction machine further has a brake assembly, which includes a brake disc, a brake pad, and a brake iron core, wherein the brake iron core is movably mounted on the second support portion, the brake disc is mounted on the side wall of the second support member, the brake pad is mounted on the brake iron core, and the brake pad is arranged close to the brake disc and is used to abut against the brake disc;

[0020] There is the first heat dissipation gap between the brake disc and the second supporting portion, and the first heat dissipation hole is arranged close to the brake disc.

[0021] In one embodiment, the traction machine further comprises a bearing assembly, the number of the motor assemblies is two, and the number of the support seats corresponds to the number of the motor assemblies;

[0022] Two support seats are respectively arranged at two ends of the traction wheel, one motor assembly is installed between the first end of the traction wheel and one of the support seats, and the other motor assembly is installed between the second end of the traction wheel and the other support seat;

[0023] The two support seats are respectively sleeved on the two ends of the support shaft, and the support shaft is rotatably connected with the support seats through a bearing assembly; the traction wheel is sleeved outside the support shaft and fixed to the support shaft.

[0024] In one embodiment, there are two heat sinks, which are respectively disposed near the two motor components; two first heat sinks and two second heat sinks are formed between the two support seats and the two ends of the traction wheel;

[0025] One of the heat sinks and one of the first heat dissipation channels and the second heat dissipation channel form a first heat dissipation system;

[0026] Another heat sink, another first heat dissipation channel, and a second heat dissipation channel form a second heat dissipation system;

[0027] The first heat dissipation system and the second heat dissipation system are respectively used for dissipating heat of two groups of motor components.

[0028] In one embodiment, a third heat dissipation channel is provided in the traction wheel, and the two second heat dissipation channels are connected through the third heat dissipation channel.

[0029] In one embodiment, the bearing assembly includes a bearing and two sealing covers, the bearing is sleeved outside the supporting shaft, the two sealing covers are sleeved outside the supporting shaft, and the two sealing covers are respectively arranged at two ends of the bearing, and the sealing covers are fixed to the first supporting portion;

[0030] The outer ring of the bearing is fixed to the first support portion, and the inner ring of the bearing is fixed to the support shaft.

[0031] The technical solution provided by the present invention has the following advantages and effects:

[0032] By setting a heat sink, when the heat sink rotates, the hot air is accelerated to flow in the first heat dissipation channel, and the heat flows out from the first heat dissipation hole through the first heat dissipation channel. The heat sink blows the air outside the traction machine into the first heat dissipation channel, thereby realizing the heat exchange inside and outside the traction machine, cooling the motor component, avoiding overheating of the motor component, and thus improving the service life and output power of the traction machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein show specific examples of the technical solutions described in the present invention, and together with the specific implementation methods, constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present invention.

[0034] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0035] Figure 1 is a schematic diagram of a traction machine in one embodiment of the present invention;

[0036] Figure 2 is a front view of a traction machine in one embodiment of the present invention;

[0037] Figure 3 is a cross-sectional view of a traction machine according to an embodiment of the present invention;

[0038] Figure 4 In one embodiment of the present invention Figure 3 A local enlarged view of point A;

[0039] Description of reference numerals:

[0040] 100. Traction machine; 1. Base; 2. Support seat; 21. First support member; 211. First support part; 212. Second support part; 213. First side wall; 214. Second side wall; 22. Accommodation groove; 23. First heat dissipation gap; 24. Second heat dissipation gap; 3. Support shaft; 4. Traction wheel; 41. Second support member; 42. Rotating wheel; 421. Rope groove; 43. Avoidance groove; 5. Braking assembly; 51. Brake pad; 52. Brake disc; 53. Braking iron core; 6. Heat dissipation system; 61. Heat dissipation member; 62. First heat dissipation channel; 63. First heat dissipation hole; 64. Second heat dissipation channel; 65. Second heat dissipation hole; 66. Third heat dissipation channel; 7. Motor assembly; 71. Stator assembly; 72. Rotor assembly; 8. Bearing assembly; 81. Sealing cover; 82. Bearing; 9. Encoder; 10. Junction box. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0045] Embodiment 1

[0046] The present invention provides a traction machine 100, such as Figures 1 to 4 As shown, it includes a traction wheel 4, a supporting shaft 3, a supporting seat 2, a motor assembly 7, and a heat sink 61. The traction wheel 4 is sleeved on the outside of the first end of the supporting shaft 3, the supporting seat 2 is sleeved on the second end of the supporting shaft 3, and the supporting shaft 3 and the supporting seat 2 are rotatably matched; the motor assembly 7 includes a stator component 71 and a rotor component 72, the stator component 71 is installed on the outer side of the supporting seat 2, the rotor component 72 is installed on the inner side of the traction wheel 4, and the rotor component 72 is arranged close to the stator component 71; a first heat dissipation channel 62 and a first heat dissipation hole 63 are provided between the supporting seat 2 and the traction wheel 4, the heat sink 61 is installed on the outer wall of the supporting seat 2, the air outlet direction of the heat sink 61 is toward the first end of the first heat dissipation channel 62, and the second end of the first heat dissipation channel 62 is connected to the first heat dissipation hole 63.

[0047] Specifically, when the stator 71 is energized, the stator 71 generates a magnetic field, which is equivalent to a permanent magnet and interacts with the rotor 72, thereby driving the rotor 72 to rotate, and the rotor 72 drives the traction wheel 4 to rotate. The traction wheel 4 is wound with a steel rope, and the car is driven up and down by the steel rope to achieve the up and down movement of the elevator. Since the traction wheel 4 is installed on the support shaft 3, the support shaft 3 and the support seat 2 are rotated together, so the support seat 2 supports the traction wheel 4 through the support shaft 3 to rotate stably.

[0048] It has been found through research that when the motor assembly 7 is working, the coils are wound on the stator part 71 and the rotor part 72. Depending on the material used for the coils, the increase in the excitation current, and the vibration or noise of the traction machine 100, the motor assembly 7 is likely to generate heat. The heat of the motor assembly 7 will cause demagnetization between the stator part 71 and the rotor part 72, thereby reducing the output power of the motor assembly 7. When the motor assembly 7 overheats, it will also cause the temperature inside the motor assembly 7 to rise, thereby damaging the parts and components inside the motor; if not handled in time, the damage to these parts and components will cause the motor to malfunction, and even cause serious safety accidents. Therefore, the heating of the motor assembly 7 is directly related to the performance and power output of the motor from a small harm, and will cause safety accidents from a large harm.

[0049] Since the support seat 2 and the traction wheel 4 do not need to contact each other, and an air gap with a certain spacing needs to be retained, by designing the direction of the air gap, the air gap can form a first heat dissipation channel 62 and a first heat dissipation hole 63, and the heat generated by the motor assembly 7 is dissipated into the first heat dissipation channel 62. By setting the heat sink 61, when the heat sink 61 rotates, the air with heat is accelerated to flow in the first heat dissipation channel 62, and the heat flows out from the first heat dissipation hole 63 through the first heat dissipation channel 62. The heat sink 61 blows the air outside the traction machine 100 into the first heat dissipation channel 62, realizing the cold and heat exchange inside and outside the traction machine 100, realizing the cooling of the motor assembly 7, avoiding the overheating of the motor assembly 7, thereby improving the service life and output power of the traction machine 100.

[0050] Preferably, a second heat dissipation channel 64 and a second heat dissipation hole 65 are further provided between the support seat 2 and the traction wheel 4, the first heat dissipation channel 62 is connected with the second heat dissipation channel 64, the air outlet direction of the heat sink 61 is toward the first end of the second heat dissipation channel 64, and the second end of the second heat dissipation channel 64 is connected with the second heat dissipation hole 65; wherein the first heat dissipation hole 63 and the second heat dissipation hole 65 are arranged far apart. Specifically, by utilizing the air gap between the support seat 2 and the traction wheel 4, a second heat dissipation channel 64 and a second heat dissipation hole 65 are further provided between the support seat 2 and the traction wheel 4, the first heat dissipation channel 62 is connected with the second heat dissipation channel 64, and the first end of the first heat dissipation channel 62 intersects with the first end of the second heat dissipation channel 64, so that when the heat sink 61 rotates, the external air of the traction machine 100 can be introduced into the first heat dissipation channel 62 and the second heat dissipation channel 64 respectively. Moreover, the first heat dissipation channel 62 and the second heat dissipation channel 64 have different directions inside the traction machine 100, so that the first heat dissipation channel 62 and the second heat dissipation channel 64 respectively take away the heat generated at different positions in the traction machine 100; the first heat dissipation hole 63 and the second heat dissipation hole 65 are arranged far apart, which can avoid heat accumulation in the first heat dissipation channel 62. The heat generated in the traction machine 100 can be dissipated to the outside of the traction machine 100 through the first heat dissipation channel 62 and the first heat dissipation hole 63, and can also be dissipated to the outside of the traction machine 100 through the second heat dissipation channel 64 and the second heat dissipation hole 65, thereby further improving the heat dissipation efficiency of the traction machine 100.

[0051] Preferably, the opening direction of the first heat dissipation hole 63 intersects or is opposite to the opening direction of the second heat dissipation hole 65. Specifically, the outside of the traction machine 100 has two heat dissipation holes with different opening directions. The heat in the traction machine 100 is dissipated through the first heat dissipation hole 63 and the second heat dissipation hole 65 to avoid the heat of the traction machine 100 from accumulating at a certain position. Since heat accumulation will also increase the temperature of the local position, such an arrangement can further improve the heat dissipation efficiency.

[0052] In some embodiments, the support seat 2 has a first support member 21, the first support member 21 is bent, and the first support member 21 has a first side wall 213 and a second side wall 214; the traction wheel 4 has a second support member 41, the second support member 41 is arranged close to the first side wall 213 and the second side wall 214, and a receiving groove 22 is formed between the inner side of the second support member 41 and the first side wall 213 and the second side wall 214; the stator member 71 is installed on the first side wall 213, and the rotor member 72 is installed on the inner side of the second support member 41; the stator member 71 and the rotor member 72 are both arranged in the receiving groove 22; the first heat dissipation channel 62 and the second heat dissipation channel 64 are respectively connected to the receiving groove 22. Specifically, by installing the stator component 71 on the first side wall 213, and forming the receiving groove 22 between the inner side of the second support component 41 and the first side wall 213 and the second side wall 214, the rotor component 72 can be installed on the inner side of the second support component 41, and the second support component 41 is sleeved outside the first support component 21, so that the stator component 71 and the rotor component 72 can be both arranged in the receiving groove 22, and the motor assembly 7 can be hidden in the traction machine 100. In addition, the heat generated by the motor assembly 7 when working will accumulate in the receiving groove 22, and the receiving groove 22 is connected with the first heat dissipation channel 62 and the second heat dissipation channel 64, and the hot air in the receiving groove 22 diffuses to the first heat dissipation channel 62 and the second heat dissipation channel 64. When the air in the first heat dissipation channel 62 and the second heat dissipation channel 64 flows, the heat of the receiving groove 22 will be taken away. Therefore, the first heat dissipation channel 62 and the second heat dissipation channel 64 can reduce the temperature of the motor assembly 7, avoid overheating of the motor assembly 7, and improve the working power of the motor assembly 7.

[0053] In some embodiments, the traction wheel 4 also has a rotating wheel 42, and the second support member 41 is installed on the side wall of the rotating wheel 42; the first support member 21 includes a first support portion 211 and a second support portion 212, and the first support portion 211 is fixed to the second support portion 212 to form an L-shaped structure; a first heat dissipation gap 23 is provided between the second support portion 212 and the second support member 41, and the first heat dissipation gap 23 forms a first heat dissipation channel 62; a second heat dissipation gap 24 is provided between the first support portion 211 and the second support portion 212, and a second heat dissipation channel 64 is formed between the first support portion 211 and the rotating wheel 42, and the second heat dissipation channel 64, the accommodating groove 22, the second heat dissipation gap 24, and the second heat dissipation hole 65 are connected in sequence; and / or, the second heat dissipation channel 64, the accommodating groove 22, the second heat dissipation gap 24, and the air outlet of the heat dissipation member 61 are connected in sequence. Specifically, the first support part 211 is fixed to the second support part 212 to form an L-shaped structure. Such a first support member 21 has an L-shaped groove, and the second support member 41 is arranged in the L-shaped groove, so that there is a space between the first support member 21 and the second support member 41 for installing the stator member 71 and the rotor member 72. When the second support member 41 is installed on the rotating wheel 42, the rotating wheel 42 is installed on the support seat 2 through the supporting shaft 3. There is a gap between the first support part 211 and the rotating wheel 42, and between the second support part 212 and the second support member 41. The heat of the motor assembly 7 during operation diffuses to the gap. This gap is used to form the first heat dissipation channel 62 and the second heat dissipation channel 64, so that the second heat dissipation hole 65 is connected to the accommodating groove 22 through the second heat dissipation channel 64, and the first heat dissipation hole 63 is connected to the accommodating groove 22 through the first heat dissipation channel 62. The motor assembly 7 in the accommodating groove 22 dissipates heat through the two heat dissipation channels, further reducing the temperature of the motor assembly 7.

[0054] In some embodiments, the traction machine 100 further has a brake assembly 5, which includes a brake disc 52, a brake pad 51, and a brake iron core 53. The brake iron core 53 is movably mounted on the second support portion 212, the brake disc 52 is mounted on the side wall of the second support member 41, and the brake pad 51 is mounted on the brake iron core 53. The brake pad 51 is arranged close to the brake disc 52 and is used to abut against the brake disc 52. There is a first heat dissipation gap 23 between the brake disc 52 and the second support portion 212, and the first heat dissipation hole 63 is arranged close to the brake disc 52. Specifically, the heat dissipation channel formed by the first heat dissipation gap 23 is guided to the brake disc 52, and the first heat dissipation hole 63 is arranged close to the brake disc 52. When the brake assembly 5 is braking, the brake iron core 53 will drive the brake pad 51 to move, so that the brake pad 51 and the brake disc 52 are against each other, thereby braking the brake disc 52. When the brake pad 51 and the brake disc 52 are braking, friction will be generated between the brake pad 51 and the brake disc 52. The friction will cause the brake pad 51 and the brake disc 52 to generate high temperature. The brake disc 52 will generate a large amount of heat when working. If this heat cannot be dissipated in time, the temperature of the brake disc 52 will increase, which may cause the braking force to decline or even fail. Therefore, maintaining the appropriate temperature of the brake disc 52 is crucial to the braking performance of the brake assembly 5. When the motor assembly 7 stops working, the motor assembly 7 generates less heat, and the heat sink 61 can continue to work. Since the heat of the first heat dissipation channel 62 is relatively small, the heat diffused by the first heat dissipation channel 62 has almost no effect on the brake disc 52. The air flow speed of the first heat dissipation hole 63 and the first heat dissipation gap 23 is relatively fast, which can quickly take away the heat near the brake disc 52, reduce the temperature of the brake disc 52 and the brake pad 51, and indirectly cool the brake assembly 5, thereby improving the braking stability of the brake assembly 5.

[0055] In some embodiments, the traction machine 100 also has a bearing assembly 8, the number of motor assemblies 7 is two groups, and the number of support seats 2 corresponds to the number of motor assemblies 7; the two support seats 2 are respectively arranged at the two ends of the traction wheel 4, one motor assembly 7 is installed between the first end of the traction wheel 4 and one of the support seats 2, and the other motor assembly 7 is installed between the second end of the traction wheel 4 and the other support seat 2; the two support seats 2 are respectively sleeved on the two ends of the support shaft 3, and the support shaft 3 is rotatably connected to the support seat 2 through the bearing assembly 8; the traction wheel 4 is sleeved on the outside of the support shaft 3 and fixed to the support shaft 3. Specifically, two groups of motor assemblies 7 are arranged, and two stator components 71 of the two groups of motor assemblies 7 are supported by two support seats 2, and the two support seats 2 are installed on the base 1; the two support seats 2 have two first support members 21, and the two ends of the traction wheel 4 also have two second support members 41, and the two rotor components 72 are respectively arranged at the two ends of the traction wheel 4 through the two second support members 41, and correspond to the two stator components 71. The two groups of motor assemblies 7 arranged in this way are symmetrically arranged relative to the traction wheel 4. After the two groups of motor assemblies 7 are conductive, they will generate driving forces of the same magnitude, so that the two ends of the traction wheel 4 have two driving forces of the same magnitude, which will further improve the output power of the traction machine 100.

[0056] In some embodiments, there are two heat sinks 61, and the two heat sinks 61 are respectively arranged near the two groups of motor components 7; two first heat dissipation channels 62 and two second heat dissipation channels 64 are formed between the two support seats 2 and the two ends of the traction wheel 4; one heat sink 61 and one of the first heat dissipation channels 62 and the second heat dissipation channels 64 form a first heat dissipation system 6; another heat sink 61 and another first heat dissipation channel 62 and the second heat dissipation channel 64 form a second heat dissipation system 6; the two heat dissipation systems 6 are respectively used for heat dissipation of the two groups of motor components 7. Specifically, by arranging the two support seats 2 at the two ends of the traction wheel 4, there is an air gap between the two support seats 2 and the two ends of the traction wheel 4, so that the traction machine 100 forms two first heat dissipation channels 62 and two second heat dissipation channels 64; the two groups of motor components 7 use two heat dissipation systems 6 for heat dissipation, and the two heat dissipation systems 6 can be relatively independent.

[0057] In some other embodiments, the traction machine 100 can be made to work without using two sets of heat dissipation systems 6, and it is only necessary to reduce the output power of the traction machine 100; but using two sets of heat dissipation systems 6 for heat dissipation can increase the output power of the traction machine 100, so the heat dissipation system 6 has greater practical value and significance for the output power of the traction machine 100.

[0058] In some embodiments, a third heat dissipation channel 66 is provided in the traction wheel 4, and the two second heat dissipation channels 64 are connected through the third heat dissipation channel 66. Specifically, the two heat dissipation systems 6 can be connected through the third heat dissipation channel 66. When the traction wheel 4 is rotating, the third heat dissipation channel 66 also rotates with the traction wheel 4. The two second heat dissipation channels 64 cannot be cooled through the third heat dissipation channel 66, and the third heat dissipation channel 66 has little practical significance. However, when the traction machine 100 is stationary or rotating at a low speed, the two second heat dissipation channels 64 are connected through the third heat dissipation channel 66, so that the heat inside the traction machine 100 can be diffused through the two second heat dissipation channels 64, further improving the heat dissipation efficiency inside the traction machine 100.

[0059] Preferably, the bearing assembly 8 includes a bearing 82 and two sealing covers 81. The bearing 82 is sleeved on the outside of the support shaft 3. The two sealing covers 81 are sleeved on the outside of the support shaft 3. The two sealing covers 81 are respectively arranged at both ends of the bearing 82. The sealing covers 81 are fixed to the first support portion 211. The outer ring of the bearing 82 is fixed to the first support portion 211, and the inner ring of the bearing 82 is fixed to the support shaft 3. Specifically, the outer ring of the bearing 82 and the ring of the bearing are rotationally matched through balls, the support shaft 3 is rotationally connected to the support seat 2 through the bearing 82, and the two sealing covers 81 are respectively arranged at both ends of the bearing 82, so that the bearing 82 can be shielded to prevent dust from falling into the bearing 82, and to prevent dust from affecting the precision of the bearing rotation, thereby further improving the stability of the bearing assembly 8 during rotation.

[0060] It should be noted that in the hoisting machine 100, by installing a heat sink 61 on the outer wall of the hoisting machine 100, the heat sink 61 sucks air into the first heat dissipation channel 62 when rotating, and discharges the air in the first heat dissipation channel 62 to the first heat dissipation hole 63, so as to achieve heat exchange between the air inside and outside the hoisting machine 100. In other hoisting machines 100, the method of installing a heat sink 61 outside the hoisting machine 100 and dissipating heat by setting the first heat dissipation channel 62 between the support seat 2 and the traction sheave 4 is within the protection scope of the present application.

[0061] Embodiment 2

[0062] like Figures 1 to 4As shown, it includes a traction wheel 4, a supporting shaft 3, two supporting seats 2, and two groups of motor components 7. The two supporting seats 2 are respectively arranged at the two ends of the traction wheel 4, one of which is installed between the first end of the traction wheel 4 and one of the supporting seats 2, and the other is installed between the second end of the traction wheel 4 and the other supporting seat 2; the two supporting seats 2 are respectively sleeved on the two ends of the supporting shaft 3, and the supporting shaft 3 and the supporting seats 2 are rotatably matched; the traction wheel 4 is sleeved outside the supporting shaft 3 and fixed to the supporting shaft 3; wherein the two supporting seats 2 are symmetrically arranged relative to the center of the supporting shaft 3, and the two supporting points between the shaft 3 and the traction wheel 4 are symmetrically arranged relative to the center of the supporting shaft 3. Specifically, by arranging two supporting seats 2 and two groups of motor components 7, the two supporting seats 2 are used to support the two ends of the supporting shaft 3, so that the two ends of the supporting shaft 3 are rotatably matched with the two supporting seats 2, and the traction wheel 4 is sleeved outside the supporting shaft 3. One group of motor components 7 is arranged between the first end of the traction wheel 4 and one of the support seats 2, and the other group of motor components 7 is arranged between the second end of the traction wheel 4 and the other support seat 2; moreover, by installing two groups of motor components 7 and two support seats 2, the traction machine 100 is in a completely symmetrical structure as a whole, and the support seat 2 can be used to set the junction box 10 and the brake assembly 5, and their installation positions and installation quantities can also be completely symmetrical or equal.

[0063] Therefore, after the two motor assemblies 7 of the traction machine 100 are powered on, the structures of the two motor assemblies 7 are completely the same, the power generated by the two motor assemblies 7 is also equal, and the two supporting points between the rotating shaft 3 and the traction wheel 4 are symmetrically arranged relative to the center of the supporting rotating shaft 3, and the power generated by the two motor assemblies 7 acts on the two supporting seats 2 respectively through the supporting rotating shaft 3; when the traction machine 100 is in operation, the forces on the two supporting points between the rotating shaft 3 and the traction wheel 4 are equal to the center of the supporting rotating shaft 3, and the forces on the two supporting seats 2 are consistent, so as to achieve the dynamic balance of the traction machine 100. Moreover, in the traction machine 100, the traction wheel 4 and the two supporting seats 2 are completely symmetrical relative to the center of the supporting rotating shaft 3, so that the bearing force on the traction machine 100 is more uniform and the force structure is better. Therefore, the external structure of the traction machine 100 is no longer associated with the elevator hanging center and the left and right output shafts, and can be arbitrarily arranged in a small machine room, making the machine room layout design and elevator installation very convenient, and the production, assembly process and assembly process of the traction machine 100 itself are also simplified.

[0064] In some embodiments, the support seat 2 has a first support member 21, which is bent and has a first side wall 213 and a second side wall 214; the traction wheel 4 has a second support member 41, which is arranged close to the first side wall 213 and the second side wall 214, and a receiving groove 22 is formed between the inner side of the second support member 41 and the first side wall 213 and the second side wall 214; the motor assembly 7 includes a stator member 71 and a rotor member 72, the stator member 71 is installed on the first side wall 213, and the rotor member 72 is installed on the inner side of the second support member 41; the stator member 71 and the rotor member 72 are both arranged in the receiving groove 22, and the rotor member 72 is arranged close to the stator member 71. Specifically, by arranging the second support member 41 close to the first side wall 213 and the second side wall 214, the second support member 41 is sleeved outside the first support member 21, but there is still a certain air gap between the second support member 41 and the first support member 21. The stator component 71 and the rotor component 72 are arranged in the receiving groove 22, the stator component 71 is arranged along the circumference of the first support component 21, and the rotor component 72 is arranged along the circumference of the second support component 41. The stator component 71 is located outside the first support component 21, and the rotor component 72 is located inside the second support component 41. When the traction wheel 4 is assembled with the two support seats 2 through the support shaft 3, the motor assembly 7 is hidden in the receiving groove 22. That is, the traction wheel 4 and the rotor yoke are two-in-one structural forms, and no additional rotor yoke and expansion sleeve or key for transmitting torque are required. The stator component 71 is hidden and fixed on the support seat 2, so that the motor structure is very simple and compact, and the outer dimensions of the traction machine 100, especially the axial dimensions, can be greatly reduced, which is more suitable for small machine room application scenarios.

[0065] In addition, the stator component 71 of the motor assembly 7 can adopt a single-tooth structure, which can reduce the manufacturing difficulty and greatly improve the utilization rate of the core punching sheet material. Moreover, the stator component 71 is installed on the outer wall of the first support member 21, and the copper wire can be wound in a centralized winding manner. The end size of the centralized winding is much shorter than that of the distributed winding end, which can greatly reduce the waste of copper wire, improve material utilization, reduce costs, and greatly reduce the axial size.

[0066] Preferably, the first support member 21 includes a first support portion 211 and a second support portion 212, the first support portion 211 and the second support portion 212 are fixed to form an L-shaped structure; the outer surface of the first support portion 211 forms a first side wall 213, the outer surface of the second support portion 212 forms a second side wall 214, and the first side wall 213 and the second side wall 214 are arranged adjacent to each other. Specifically, the first side wall 213 of the first support portion 211 can be used to install the stator component 71, and the inner side wall of the first support portion 211 can be used to install the bearing assembly 8, and the support shaft 3 is rotatably connected to the first support portion 211 through the bearing assembly 8, so as to make full use of the supporting function of the first support portion 211; and the second side wall 214 of the second support portion 212 corresponds to the outer side of the second support member 41, and can play a role in shielding the accommodating groove 22, so that the motor assembly 7 is completely hidden in the accommodating groove 22, and the second support portion 212 can also be used to support the brake assembly 5. Therefore, the first support member 21 supports the rotating shaft 3, the stator member 71, and the brake assembly 5 at the same time, so that each supporting surface of the first support member 21 is effectively utilized. While ensuring that the winch 100 is symmetrical, after the various components are installed, there is no interference in the functional use of the various components, and the functional role of each component can be maximized. The winch 100 configured in this way is more reasonable and compact in structure.

[0067] It can be understood that the traction machine 100 makes full use of the structural design of the two support seats 2, so that the two motor components 7, the two bearing components 8, and the two brake components 5 are symmetrically arranged on both sides of the traction wheel 4, and are completely symmetrical relative to the center of the traction wheel 4, further making the load of the traction machine 100 more uniform and the force structure better. In this embodiment, the traction machine 100 is always in a symmetrical state after the installation of various accessories because of the use of the support seat 2 structure and the traction wheel 4 structure. Moreover, the bearing component 8 and the brake component 5 are essential functional components in the traction machine 100. The bearing force generated by the rotation of the traction wheel 4 is applied to the two support seats 2 through the two sets of bearing components 8, and the forces received by the two support seats 2 are also basically the same. Moreover, the two brake components 5 brake the brake discs 52 at both ends of the traction wheel 4 respectively, which can also further improve the braking efficiency of the traction machine 100.

[0068] In some embodiments, the first support portion 211 is a hollow columnar structure, and the second support portion 212 is a hollow disc-shaped structure; the outer diameter of the second support portion 212 is greater than the outer diameter of the first support portion 211. Specifically, the first support portion 211 is a hollow columnar structure, and the support shaft 3 can be installed in the first support portion 211 and rotatably connected to the first support portion 211 through the bearing assembly 8; while the second support portion 212 is a hollow disc-shaped structure, and the first support portion 211 can be installed in the second support portion 212. There are many ways to install it, such as fixing with screws, welding, and producing the first support portion 211 and the second support portion 212 by integral die-casting, which is not particularly limited here.

[0069] Through the structural features of the first support part 211 and the second support part 212, the structural installation between the support shaft 3, the traction wheel 4 and the support seat 2 is more compact, and the internal space of the traction machine 100 is fully utilized, so that the size of the traction machine 100 is further miniaturized.

[0070] In some embodiments, the traction machine 100 further includes a brake assembly 5 and a bearing assembly 8, wherein the bearing assembly 8 is mounted on the first support portion 211, and the bearing assembly 8 is sleeved outside the support shaft 3, and the support shaft 3 is rotatably connected with the first support portion 211 through the bearing assembly 8; the brake assembly 5 is mounted on the second support portion 212. Specifically, the bearing assembly 8 can be disposed in the hollow of the first support portion 211, and the support shaft 3 is rotatably matched with the first support portion 211 through the bearing assembly 8, and the brake assembly 5 is mounted on the second support portion 212, so that the positions of the bearing assembly 8 and the brake assembly 5 on the support seat 2 are more reasonable.

[0071] Preferably, the brake assembly 5 includes a brake disc 52, a brake pad 51, and a brake core 53. The brake core 53 is movably mounted on the second support portion 212. The brake disc 52 is mounted on the side wall of the second support member 41. The brake pad 51 is mounted on the brake core 53. The brake pad 51 is arranged close to the brake disc 52 and is used to abut against the brake disc 52. Specifically, the brake disc 52 is mounted on the side wall of the second support member 41, and the brake core 53 is movably mounted on the second support portion 212. The brake core 53 moves after being electrically conductive, thereby driving the brake pad 51 to move and move away from the brake disc 52, so that the brake assembly 5 is in a released state. When the brake core 53 is powered off, the brake core 53 is reset by the reset spring and moves to the initial position, and the brake pad 51 contacts the brake disc 52, and a large friction resistance is generated between the brake disc 52 and the brake pad 51, thereby achieving the braking state of the brake assembly 5; and the brake disc 52 is fixed to the traction wheel 4 through the second support member 41, thereby achieving emergency braking of the traction wheel 4.

[0072] In this embodiment, the brake assembly 5 is a disc brake assembly, and existing technologies can be used, such as Chinese Patent No. 202410378304.5, which discloses a disc brake assembly and a braking method. The disc brake assembly will not be described in detail again.

[0073] Preferably, there are two groups of bearing assemblies 8, and the two groups of bearing assemblies 8 are respectively sleeved on the two ends of the supporting shaft 3; the two groups of bearing assemblies 8 are respectively installed on the two support seats 2, and the two groups of bearing assemblies 8 are symmetrically arranged relative to the center of the supporting shaft 3. Specifically, the two ends of the supporting shaft 3 are rotatably connected to the two support seats 2 through the two groups of bearing assemblies 8, and the two groups of bearing assemblies 8 play the role of supporting the supporting shaft 3, and reduce the friction resistance of the supporting shaft 3, thereby improving the rotation accuracy of the supporting shaft 3. In this way, the two supporting points of the traction wheel 4 are at an equal distance from the center of the supporting shaft 3, and the bearing force applied by them is also consistent. The force generated by the supporting shaft 3 in the direction of the axis centerline is consistent, thereby avoiding vibration due to uneven force, and further reducing the noise of the traction machine 100.

[0074] In some embodiments, the traction wheel 4 further has a rotating wheel 42, two second support members 41 are respectively installed at both ends of the rotating wheel 42, and the outer wall of the rotating wheel 42 has a rope groove 421; the second support member 41 is an annular structure, the outer diameter of the second support member 41 is larger than the outer diameter of the rotating wheel 42, and an avoidance groove 43 is formed between the inner side of the two second support members 41 and the outer wall of the rotating wheel 42. Specifically, when the traction machine 100 is assembled, the traction rope needs to be wound in the rope groove 421 of the rotating wheel 42. When the traction machine 100 is pulling the car, the avoidance groove 43 allows the traction rope to move to avoid interference with the traction rope, and also allows the traction rope to be assembled on the traction wheel 4 with a certain installation space.

[0075] Furthermore, with the symmetrically arranged traction machine 100, only the brake disc 52, the winding traction rope, and the rotor component 72 need to be installed on the traction wheel 4, and the rotor components 72 of the two sets of motor assemblies 7 are respectively arranged at the two ends of the traction wheel 4. Such a structure can make the axial distance of the traction wheel 4 shorter, further shortening the axial size of the traction machine 100.

[0076] In addition, an encoder 9 is provided at either end of the support shaft 3. The main function of the encoder 9 is to convert the mechanical motion of the traction machine 100 into an electrical signal for the functions of speed control, position positioning, safety monitoring, etc. of the elevator. Through the electrical signal generated by the encoder 9, the elevator control system can monitor the operating status of the elevator in real time to ensure the safe, accurate and efficient operation of the elevator.

[0077] The present invention also provides an assembly method of the traction machine 100, characterized in that it comprises the following steps:

[0078] Step 1: Install one set of motor components 7 on one of the support bases 2 and the first end of the traction wheel 4 respectively; install another set of motor components 7 on another support base 2 and the second end of the traction wheel 4 respectively;

[0079] Step 2: The traction wheel 4 is sleeved on the supporting shaft 3, and the two ends of the supporting shaft 3 are respectively inserted into the through holes of the two supporting seats 2, so that the supporting shaft 3 and the supporting seat 2 can rotate together;

[0080] The two groups of motors 7 are respectively arranged at the two ends of the supporting shaft 3, and are symmetrically arranged with respect to the center of the supporting shaft 3. In the production of the traction machine 100, through the symmetrical arrangement, the various components of the traction machine 100, such as the supporting shaft 3 and the traction wheel 4, are of symmetrical structure, and the structures of the two support seats 2 are the same. Through the above-mentioned assembly method, the traction machine 100 can be quickly assembled, so that the assembled traction machine 100 is in a relatively symmetrical structure as a whole.

[0081] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0082] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the present invention, and to fully describe the technical solution, purpose and effect of the present invention. Its purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the scope of protection of the present invention.

[0083] The above embodiments are not exhaustive enumerations of 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

1. A traction machine, characterized in that: It includes a traction wheel, a supporting shaft, a supporting seat, a motor assembly, and a heat sink. The traction wheel is sleeved on the supporting shaft, the supporting seat is sleeved on both ends of the supporting shaft, and the supporting shaft and the supporting seat are rotatably matched. The motor assembly comprises a stator component and a rotor component, wherein the stator component is mounted on the outer side of the support seat, and the rotor component is mounted on the inner side of the traction wheel, and the rotor component is arranged close to the stator component; A first heat dissipation channel and a first heat dissipation hole are provided between the support seat and the traction wheel, the heat dissipation element is installed on the outer wall of the support seat, the air outlet direction of the heat dissipation element is toward the first end of the first heat dissipation channel, and the second end of the first heat dissipation channel is connected to the first heat dissipation hole; A second heat dissipation channel and a second heat dissipation hole are also provided between the support seat and the traction wheel, the first heat dissipation channel is connected with the second heat dissipation channel, the air outlet direction of the heat dissipation element is toward the first end of the second heat dissipation channel, and the second end of the second heat dissipation channel is connected with the second heat dissipation hole; Wherein, the first heat dissipation hole and the second heat dissipation hole are arranged far apart.

2. The traction machine according to claim 1, characterized in that: The opening direction of the first heat dissipation hole intersects or is opposite to the opening direction of the second heat dissipation hole.

3. The traction machine according to claim 1, characterized in that: The support seat has a first support member, the first support member is bent, and the first support member has a first side wall and a second side wall; The traction wheel has a second support member, the second support member is arranged close to the first side wall and the second side wall, and a receiving groove is formed between the inner side of the second support member and the first side wall and the second side wall; The stator component is mounted on the first side wall, and the rotor component is mounted on the inner side of the second support component; the stator component and the rotor component are both arranged in the receiving groove; Wherein, the first heat dissipation channel and the second heat dissipation channel are respectively communicated with the accommodating groove.

4. The traction machine according to claim 3, characterized in that: The traction wheel also has a rotating wheel, and the second support member is installed on the side wall of the rotating wheel; the first support member includes a first support portion and a second support portion, and the first support portion is fixed to the second support portion to form an L-shaped structure; A first heat dissipation gap is provided between the second support portion and the second support member, and the first heat dissipation gap forms the first heat dissipation channel; A second heat dissipation gap is provided between the first support portion and the second support portion, a second heat dissipation channel is formed between the first support portion and the rotating wheel, and the second heat dissipation channel, the containing groove, the second heat dissipation gap, and the second heat dissipation hole are connected in sequence; And / or, the second heat dissipation channel, the accommodating groove, the second heat dissipation gap, and the air outlet of the heat dissipation element are connected in sequence.

5. The traction machine according to claim 4, characterized in that: The traction machine also has a brake assembly, which includes a brake disc, a brake pad, and a brake iron core. The brake iron core is movably mounted on the second support portion, the brake disc is mounted on the side wall of the second support member, the brake pad is mounted on the brake iron core, and the brake pad is arranged close to the brake disc and is used to abut against the brake disc. There is the first heat dissipation gap between the brake disc and the second supporting portion, and the first heat dissipation hole is arranged close to the brake disc.

6. The traction machine according to claim 1, characterized in that: The traction machine also has a bearing assembly, the number of the motor assemblies is two groups, and the number of the support seats corresponds to the number of the motor assemblies; Two support seats are respectively arranged at two ends of the traction wheel, one motor assembly is installed between the first end of the traction wheel and one of the support seats, and the other motor assembly is installed between the second end of the traction wheel and the other support seat; The two support seats are respectively sleeved on the two ends of the support shaft, and the support shaft is rotatably connected with the support seats through a bearing assembly; the traction wheel is sleeved outside the support shaft and fixed to the support shaft.

7. The traction machine according to claim 6, characterized in that: There are two heat sinks, which are respectively arranged near the two motor components; two first heat sinks and two second heat sinks are formed between the two support seats and the two ends of the traction wheel; One of the heat sinks and one of the first heat dissipation channels and the second heat dissipation channel form a first heat dissipation system; Another heat sink, another first heat dissipation channel, and a second heat dissipation channel form a second heat dissipation system; The first heat dissipation system and the second heat dissipation system are respectively used for dissipating heat of two groups of motor components.

8. The traction machine according to claim 7, characterized in that: A third heat dissipation channel is provided in the traction wheel, and the two second heat dissipation channels are connected through the third heat dissipation channel.

9. The traction machine according to claim 6, characterized in that: The bearing assembly includes a bearing and two sealing covers. The bearing is sleeved outside the supporting shaft. The two sealing covers are sleeved outside the supporting shaft. The two sealing covers are respectively arranged at two ends of the bearing. The sealing covers are fixed to the first supporting part. The outer ring of the bearing is fixed to the first support portion, and the inner ring of the bearing is fixed to the support shaft.

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