Traction machine and elevator system

Abstract

The utility model relates to the technical field of elevator equipment, in particular to a traction machine and an elevator system, and the traction machine comprises a machine base, a driving device and a traction wheel. A containing cavity is defined by the machine base and forms a first opening in the first end, in the first direction, of the machine base. The driving device comprises a stator and a rotor, the stator is arranged in the accommodating cavity, the rotor is rotatably arranged on the base and covers the first opening, and a first sealing ring is clamped between the rotor and the peripheral wall of the first opening; the traction wheel is arranged on the rotor; wherein the first direction is parallel to the rotating axis of the traction wheel. According to the traction machine, the first opening of the containing cavity is sealed through the rotor, and the gap between the rotor and the peripheral wall of the first opening is sealed through the first sealing ring, so that the probability that water enters the containing cavity is reduced. The stator is arranged in the containing cavity so that the probability that water enters the stator can be reduced, and therefore the traction machine has the high waterproof performance.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to a traction machine and an elevator system. Background Art

[0002] The traction machine is the power equipment of the elevator system. When the elevator system is working, the traction machine drives the car to move so that the elevator system can operate.

[0003] In the prior art, the traction machine has a poor waterproof effect, and the stator of the traction machine is easily damaged by water. Utility Model Content

[0004] The purpose of the utility model is to at least solve the problem that the stator of the traction machine is easily damaged by water ingress. This purpose is achieved by the following methods:

[0005] The first aspect of the utility model proposes a traction machine, which includes: a machine base, a driving device and a traction wheel. The machine base defines a receiving cavity, and the receiving cavity forms a first opening at a first end of the machine base along a first direction. The driving device includes a stator and a rotor, the stator is arranged in the receiving cavity, the rotor is rotatably arranged on the machine base and sealed on the first opening, and a first sealing ring is sandwiched between the rotor and the peripheral wall of the first opening. The traction wheel is arranged on the rotor. Wherein, the first direction is parallel to the rotation axis of the traction wheel.

[0006] According to the traction machine of the utility model, the first opening of the accommodating chamber is sealed by the rotor, and the gap between the rotor and the peripheral wall of the first opening is sealed by the first sealing ring to reduce the probability of water entering the accommodating chamber. The stator is arranged in the accommodating chamber to reduce the probability of water entering the stator, so that the traction machine of the utility model embodiment has a higher waterproof performance.

[0007] In addition, the traction machine according to the utility model may also have the following additional technical features:

[0008] In some embodiments of the utility model, the base further defines a support cavity, the accommodating cavity is arranged outside the support cavity, the support cavity forms a second opening at the first end of the base, the rotor includes a rotating shaft portion and a first connecting portion, the rotating shaft portion is rotatably arranged in the support cavity, the first connecting portion is arranged around the rotating shaft portion, the first connecting portion covers the first opening and the second opening, and the first sealing ring is sandwiched between the first connecting portion and the peripheral wall of the first opening.

[0009] In some embodiments of the utility model, the machine base has a second end arranged opposite to the first end along the first direction, the support cavity forms a third opening at the second end, the traction machine also includes a coding component, the coding component is arranged on the machine base and covers the third opening, a second sealing ring is sandwiched between the coding component and the machine base, and the coding component is connected to the rotating shaft part through the third opening.

[0010] In some embodiments of the utility model, the encoding assembly includes: an encoder seat and an encoder. The encoder seat is arranged on the machine base and covers the third opening, the second sealing ring is sandwiched between the encoder seat and the machine base along the first direction, and the encoder seat defines a mounting cavity connected to the third opening; the encoder includes a main body and a rotating shaft, the main body is arranged in the mounting cavity, one end of the rotating shaft is located in the mounting cavity and connected to the main body, and the other end of the rotating shaft is located in the supporting cavity and connected to the rotating shaft.

[0011] In some embodiments of the utility model, a fourth opening is provided on the side of the installation cavity away from the third opening, and the encoding assembly also includes a cover plate and a third sealing ring, the cover plate is detachably provided on the encoder seat and closes the fourth opening, and the third sealing ring is clamped between the cover plate and the encoder seat along the first direction.

[0012] In some embodiments of the utility model, the machine base includes a first seat body and a second seat body, the first seat body is arranged outside the second seat body, the first seat body defines the accommodating cavity, the second seat body defines the supporting cavity, a heat dissipation cavity is defined between the first seat body and the second seat body, at least a portion of the heat dissipation cavity is opposite to the accommodating cavity in the radial direction of the traction wheel, and a heat dissipation opening is formed at the end of the heat dissipation cavity away from the first end.

[0013] In some embodiments of the present invention, the second seat body includes a second connecting portion and a spindle portion that defines the support cavity, the spindle portion is provided with a first connecting position, at least part of the first connecting position is opposite to the traction wheel along the radial direction of the traction wheel, the traction machine includes a first bearing, the first bearing is sleeved on the rotating shaft portion and clamped between the rotating shaft portion and the first connecting position, one end of the second connecting portion is connected to the first seat body, and the other end of the second connecting portion is connected to the first connecting position.

[0014] In some embodiments of the utility model, the traction machine also includes a second bearing, the main shaft portion is also provided with a second connecting position, the second bearing is sleeved on the rotating shaft portion and clamped between the rotating shaft portion and the second connecting position, the first connecting position is located on the side of the main shaft portion close to the rotor along the first direction, and the second connecting position is located on the side of the main shaft portion away from the rotor along the first direction.

[0015] In some embodiments of the utility model, the machine base further defines a wiring cavity connected to the accommodating cavity, the wiring cavity is located outside the accommodating cavity along the radial direction of the traction wheel, a fifth opening is provided at one end of the wiring cavity away from the accommodating cavity, the machine base is provided with a wiring board covering the fifth opening, and a fourth sealing ring is sandwiched between the wiring board and the machine base.

[0016] In some embodiments of the utility model, the rotor is formed with a process hole that penetrates the rotor along the thickness direction of the rotor, and the driving device includes a threaded member and a sealing belt, the threaded member is arranged in the process hole, the sealing belt is wound around the threaded member and is clamped between the threaded member and the inner wall of the process hole.

[0017] In some embodiments of the utility model, the traction machine also includes a brake and a waterproof cover, the brake is arranged on the machine base, the waterproof cover defines a waterproof cavity with one end open, the brake is located in the waterproof cavity, the machine base covers the open end of the waterproof cavity, and a fifth sealing ring is sandwiched between the waterproof cover and the machine base.

[0018] The second aspect of the present invention provides an elevator system, comprising: the traction machine as described in the first aspect above.

[0019] According to the elevator system of the present invention, including the traction machine as described in the above embodiment, the elevator system of the present invention has a higher waterproof performance, so as to reduce the probability of water damage to the elevator system of the present invention, thereby making the elevator system of the present invention have a higher operating stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0021] Figure 1 It is a three-dimensional schematic diagram of a traction machine according to an embodiment of the utility model;

[0022] Figure 2It is a front view of the traction machine of the embodiment of the utility model;

[0023] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0024] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0025] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0026] Figure 6 for Figure 2 Schematic diagram of the middle machine base;

[0027] Figure 7 for Figure 2 Schematic diagram of the middle rotor;

[0028] Figure 8 A three-dimensional schematic diagram of a base according to an embodiment of the utility model;

[0029] Fig. 9 It is a three-dimensional schematic diagram of the base from another perspective of the embodiment of the utility model.

[0030] The reference numerals in the accompanying drawings represent the following:

[0031] 100. Traction machine;

[0032] 1. base; 11. accommodating cavity; 111. first opening; 12. supporting cavity; 121. second opening; 122. third opening; 13. first seat body; 14. second seat body; 141. second connecting portion; 142. spindle portion; 1421. first connecting position; 1422. second connecting position; 15. heat dissipation cavity; 151. heat dissipation opening; 152. heat dissipation rib; 16. wiring cavity; 161. fifth opening; 17. wiring board; 171. fourth sealing ring; 18. connecting channel; 19. wiring seat; 191. waterproof cable fixing head;

[0033] 2. driving device; 21. stator; 22. rotor; 221. rotating shaft; 222. first connecting part; 223. process hole; 224. third connecting part; 23. first sealing ring; 24. threaded member;

[0034] 3. Traction sheave;

[0035] 4. Encoding assembly; 41. Second sealing ring; 42. Encoder seat; 421. Mounting cavity; 422. Fourth opening; 43. Encoder; 431. Main body; 432. Rotating shaft; 44. Cover plate; 45. Third sealing ring;

[0036] 5. The first bearing;

[0037] 6. Second bearing;

[0038] 7. Waterproof cover; 71. Waterproof cavity; 72. Fifth sealing ring;

[0039] a. First direction; b. Second direction. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0042] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiment. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0045] In special scenarios such as hydropower stations and nuclear power plants, the traction machine is easily exposed to water. However, the waterproof effect of the traction machine in the prior art is poor, and the stator of the traction machine is easily damaged by water. The traction machine is the power system of the elevator system. Damage to the traction machine will cause the elevator system to fail to operate.

[0046] In order to at least solve the problem that the stator of the traction machine is easily damaged by water ingress, the embodiment of the utility model proposes a traction machine 100, which can reduce the probability of water ingress into the stator 21, thereby having a higher waterproof performance.

[0047] The embodiment of the present utility model further provides an elevator system including the traction machine 100 of the above embodiment.

[0048] Combine the following Figures 1 to 9 The traction machine 100 and the elevator system according to the embodiment of the present invention are described.

[0049] Combination Figure 1 , Figure 3 and Figure 5As shown, the traction machine 100 of the embodiment of the utility model comprises a machine base 1, a driving device 2 and a traction wheel 3. The machine base 1 defines a receiving chamber 11, and the receiving chamber 11 forms a first opening 111 at a first end of the machine base 1 along a first direction a; the driving device 2 comprises a stator 21 and a rotor 22, the stator 21 is arranged in the receiving chamber 11, the rotor 22 is rotatably arranged on the machine base 1 and sealed on the first opening 111, and a first sealing ring 23 is sandwiched between the rotor 22 and the peripheral wall of the first opening 111; the traction wheel 3 is arranged on the rotor 22; wherein the first direction a is parallel to the rotation axis of the traction wheel 3.

[0050] The rotor 22 covers the first opening 111 of the accommodating chamber 11, and the first sealing ring 23 seals the gap between the rotor 22 and the peripheral wall of the first opening 111 to reduce the probability of water entering the accommodating chamber 11. In other words, it is not easy for water to enter the accommodating chamber 11. The stator 21 is arranged in the accommodating chamber 11 to reduce the probability of water entering the stator 21, so that the traction machine 100 of the embodiment of the utility model has a higher waterproof performance.

[0051] Since the traction machine 100 of the embodiment of the utility model has a high waterproof performance, the traction machine 100 of the embodiment of the utility model can be applied to scenes that are easily exposed to water, such as hydropower stations and nuclear power stations.

[0052] The elevator system of the embodiment of the utility model includes the traction machine 100 as described in the above embodiment, so that the elevator system of the embodiment of the utility model has a higher waterproof performance, so as to reduce the probability of water damage to the elevator system of the embodiment of the utility model, thereby making the elevator system of the embodiment of the utility model have higher operating stability.

[0053] Since the elevator system of the embodiment of the utility model has a high waterproof performance, the elevator system of the embodiment of the utility model can be applied to scenes that are easily exposed to water, such as hydropower stations and nuclear power stations.

[0054] In some specific embodiments, the elevator system further includes a wire rope, a counterweight and a car. The traction machine 100, the car, the counterweight and the wire rope are all arranged in the elevator shaft. The car and the counterweight are arranged on both sides of the traction wheel 3 along the radial direction of the traction wheel 3. The wire rope includes a first rope segment, a second rope segment and a third rope segment. The third rope segment is arranged on the traction wheel 3. The first rope segment and the second rope segment both extend along the second direction b. The second direction b is perpendicular to the first direction. As an example, the second direction b is the up and down direction. One end of the first rope segment is connected to the car, the other end of the first rope segment is connected to one end of the third rope segment, one end of the second rope segment is connected to the counterweight, and the other end of the second rope segment is connected to the other end of the third rope segment. The traction wheel 3 determines the output torque according to the weight of the car and the weight of the counterweight, so as to drive the car to run.

[0055] Since the probability of the traction machine 100 being damaged by water ingress is low, the elevator system of the embodiment of the utility model has a high waterproof performance, which can reduce the probability of the elevator system of the embodiment of the utility model being damaged by water ingress, thereby making the elevator system of the embodiment of the utility model have a high operating stability.

[0056] Combination Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments, the base 1 further defines a support cavity 12, the accommodating cavity 11 is disposed outside the support cavity 12, and the support cavity 12 forms a second opening 121 at the first end of the base 1. That is, the first opening 111 and the second opening 121 are located at the same end of the base 1. The rotor 22 includes a shaft portion 221 and a first connecting portion 222, the shaft portion 221 is rotatably disposed in the support cavity 12, the first connecting portion 222 is disposed around the shaft portion 221, the first connecting portion 222 covers the first opening 111 and the second opening 121, and a first sealing ring 23 is sandwiched between the first connecting portion 222 and the peripheral wall of the first opening 111.

[0057] By locating the first opening 111 and the second opening 121 at the same end of the machine base and simultaneously covering the first opening 111 and the second opening 121 through the first connecting portion 222 , the structure of the traction machine 100 of the embodiment of the utility model can be simplified and made more compact.

[0058] In addition, by installing the rotating shaft portion 221 through the supporting cavity 12, the installation stability between the rotating shaft portion 221 and the machine base 1 can be increased. That is, the rotating shaft portion 221 can be stably located in the supporting cavity 12, thereby reducing the probability of the rotating shaft portion 221 detaching from the supporting cavity 12, thereby making the structure of the traction machine 100 of the embodiment of the utility model reasonable.

[0059] like Figure 3 As shown, in some optional embodiments, the first connecting portion 222 is spaced apart from the base 1, and a connecting channel 18 is formed between the first connecting portion 222 and the base 1, one end of the connecting channel 18 is connected to the first opening 111, and the other end of the connecting channel 18 is connected to the second opening 121, and the first opening 111 and the second opening 121 are connected.

[0060] By arranging the first connection part 222 and the machine base 1 at a distance, it is possible to avoid the first connection part 222 from generating friction with the machine base 1 during rotation, thereby making the structure of the traction machine 100 of the embodiment of the utility model reasonable.

[0061] The first opening 111 and the second opening 121 are both covered by the first connecting portion 222, and a first sealing ring 23 is provided between the first connecting portion 222 and the peripheral wall of the first opening 111, so that the first opening 111 and the second opening 121 are both in a sealed state, that is, the probability of water entering the first opening 111 and the second opening 121 is relatively small, so the first opening 111 and the second opening 121 are in a connected state, which can avoid setting a structure to block the first opening 111 and / or the second opening 121 and / or the connecting channel 18, thereby making the structure of the traction machine 100 of the embodiment of the utility model simple, compact and reasonable.

[0062] In other optional embodiments, the first connecting portion 222 and the base 1 are spaced apart, a connecting channel 18 is formed between the first connecting portion 222 and the base 1, one end of the connecting channel 18 is connected to the first opening 111, and the other end of the connecting channel 18 is connected to the second opening 121, and a sixth sealing ring is provided in the connecting channel 18, and the sixth sealing ring is clamped between the first connecting portion 222 and the base 1 and closes the connecting channel 18.

[0063] By providing the sixth sealing ring to seal the connecting channel 18 , the probability of mutual influence between the first opening 111 and the second opening 121 can be reduced, so as to further enhance the waterproof performance of the traction machine 100 of the embodiment of the utility model.

[0064] Specifically, one end of the first connection portion 222 close to the peripheral wall of the first opening 111 is connected to the third connection portion 224 . The third connection portion 224 is arranged opposite to the stator 21 along the radial direction of the traction sheave 3 and is located in the accommodating cavity 11 .

[0065] The stator 21 drives the third connection part 224 to rotate, thereby driving the first connection part 222 and the rotating shaft part 221 to rotate. The third connection part 224 is located in the accommodating cavity 11, so that the probability of water damage can be reduced.

[0066] Combination Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments, the base 1 has a second end arranged opposite to the first end along the first direction a, the support cavity 12 forms a third opening 122 at the second end, the traction machine 100 also includes a coding component 4, the coding component 4 is arranged on the base 1 and covers the third opening 122, a second sealing ring 41 is sandwiched between the coding component 4 and the base 1, and the coding component 4 is connected to the rotating shaft portion 221 through the third opening 122.

[0067] The encoding component 4 is connected to the rotating shaft portion 221 through the third opening 122 so as to measure the angular displacement and angular velocity of the rotating shaft portion 221 , thereby indirectly reflecting the angular displacement and angular velocity of the traction wheel 3 .

[0068] The coding component 4 covers the third opening 122 , and a second sealing ring 41 is sandwiched between the coding component 4 and the base 1 , thereby reducing the probability of water entering the supporting cavity 12 .

[0069] Combination Figure 3 and Figure 4 As shown, in some embodiments, the encoding component 4 includes: an encoder seat 42 and an encoder 43. The encoder seat 42 is arranged on the machine base 1 and covers the third opening 122. The second sealing ring 41 is sandwiched between the encoder seat 42 and the machine base 1 along the first direction a. The encoder seat 42 defines a mounting cavity 421 connected to the third opening 122; the encoder 43 includes a main body 431 and a rotating shaft 432. The main body 431 is arranged in the mounting cavity 421. One end of the rotating shaft 432 is located in the mounting cavity 421 and connected to the main body 431. The other end of the rotating shaft 432 is located in the supporting cavity 12 and connected to the rotating shaft portion 221.

[0070] The second sealing ring 41 can seal the installation cavity 421 , thereby reducing the probability of water entering the installation cavity 421 and reducing the probability of the encoder 43 being damaged by contact with water.

[0071] The second sealing ring 41 can seal the installation cavity 421 and the support cavity 12, thereby reducing the number of parts of the traction machine 100 of the embodiment of the utility model, making the traction machine 100 of the embodiment of the utility model simple and compact in structure.

[0072] Combination Figure 3 and Figure 4 As shown, in some embodiments, a fourth opening 422 is provided on the side of the installation cavity 421 away from the third opening 122, and the encoding assembly 4 also includes a cover plate 44 and a third sealing ring 45, the cover plate 44 is detachably provided on the encoder seat 42 and closes the fourth opening 422, and the third sealing ring 45 is clamped between the cover plate 44 and the encoder seat 42 along the first direction a.

[0073] When the encoder 43 needs to be disassembled, the cover plate 44 is removed, and the encoder 43 is removed through the fourth opening 422. When the encoder 43 needs to be installed, the encoder 43 is installed through the fourth opening 422, and the cover plate 44 and the third sealing ring 45 are installed. The fourth opening 422 can facilitate the installation and removal of the encoder 43.

[0074] The fourth opening 422 can be covered by the cover plate 44, and the third sealing ring 45 is sandwiched between the cover plate 44 and the encoder seat 42 along the first direction a, thereby reducing the probability of water entering the installation cavity 421 and reducing the probability of the encoder 43 being damaged by contact with water.

[0075] Combination Figure 3 , Figure 6 Figure 8 and Fig. 9 As shown, in some embodiments, the machine base 1 includes a first base body 13 and a second base body 14, the first base body 13 is arranged outside the second base body 14, the first base body 13 defines a accommodating cavity 11, the second base body 14 defines a supporting cavity 12, and a heat dissipation cavity 15 is defined between the first base body 13 and the second base body 14, at least a portion of the heat dissipation cavity 15 is opposite to the accommodating cavity 11 in the radial direction of the traction wheel 3, and the heat dissipation cavity 15 is formed with a heat dissipation opening 151 at the end away from the first end.

[0076] Since the heat dissipation cavity 15 is defined by the first seat body 13 and the second seat body 14 , the heat dissipation cavity 15 can dissipate heat from the accommodating cavity 11 in the first seat body 13 and the supporting cavity 12 in the second seat body 14 , thereby dissipating heat from the stator 21 and the shaft portion 221 .

[0077] Since at least part of the heat dissipation cavity 15 is opposite to the accommodating cavity 11 in the radial direction of the traction sheave 3 , the heat dissipation effect of the heat dissipation cavity 15 on the supporting cavity 12 can be increased, so as to further increase the heat dissipation effect on the stator 21 .

[0078] The heat dissipation opening 151 is provided to enable heat to leave the heat dissipation cavity 15 more quickly, thereby increasing the heat dissipation effect of the heat dissipation cavity 15 .

[0079] like Figure 6 As shown, specifically, a heat dissipation rib 152 is provided in the heat dissipation cavity 15 , and the first seat body 13 and the second seat body 14 are both connected to the heat dissipation rib 152 .

[0080] The first seat body 13 and the second seat body 14 are both connected to the heat dissipation ribs 152 so as to transfer heat to the heat dissipation ribs 152. The heat dissipation ribs 152 have a large surface area and a high heat dissipation effect, thereby increasing the heat dissipation effect of the accommodating cavity 11 in the first seat body 13 and the heat dissipation effect of the supporting cavity 12 in the second seat body 14.

[0081] In addition, the heat dissipation ribs 152 can increase the structural strength of the first base body 13 and the second base body 14 , so that the first base body 13 and the second base body 14 can bear a greater weight.

[0082] Combination Figure 3 , Figure 5 , Figure 8 and Fig. 9As shown, in some embodiments, the second seat body 14 includes a second connection portion 141 and a spindle portion 142 defining a support cavity 12, the spindle portion 142 is provided with a first connection position 1421, at least part of the first connection position 1421 is opposite to the traction wheel 3 along the radial direction of the traction wheel 3, and the traction machine 100 includes a first bearing 5, the first bearing 5 is sleeved on the shaft portion 221 and sandwiched between the shaft portion 221 and the first connection position 1421. In other words, the first bearing 5 is located in the support cavity 12. One end of the second connection portion 141 is connected to the first seat body 13, and the other end of the second connection portion 141 is connected to the first connection position 1421.

[0083] The rotating shaft portion 221 is connected to the central shaft portion 142 via the first bearing 5. By making at least a portion of the first connecting position 1421 opposite to the traction wheel 3 along the radial direction of the traction wheel 3, the distance between the first connecting position 1421 and the traction wheel 3 in the first direction can be reduced, thereby reducing the deflection of the rotating shaft portion 221.

[0084] One end of the second connection portion 141 is connected to the first base 13 , and the other end of the second connection portion 141 is connected to the first connection position 1421 , thereby increasing the structural strength of the first connection position 1421 so that the first connection position 1421 can bear a larger load.

[0085] In addition, the first bearing 5 being located in the support cavity 12 can reduce the probability of the first bearing 5 contacting water.

[0086] like Figure 6 As shown, specifically, the second connection portion 141 and the mandrel portion 142 are both connected to the heat dissipation ribs 152. The second connection portion 141 and the mandrel portion 142 are strengthened by the heat dissipation ribs 152, so that the second connection portion 141 and the mandrel portion 142 have a higher structural strength.

[0087] Combination Figure 3 and Figure 6 As shown, in some embodiments, the traction machine 100 also includes a second bearing 6, and the spindle portion 142 is also provided with a second connecting position 1422. The second bearing 6 is sleeved on the rotating shaft portion 221 and clamped between the rotating shaft portion 221 and the second connecting position 1422. The first connecting position 1421 is located on a side of the spindle portion 142 along the first direction a close to the rotor 22, and the second connecting position 1422 is located on a side of the spindle portion 142 along the first direction a away from the rotor 22.

[0088] By locating the first connection position 1421 on the side of the spindle portion 142 close to the rotor 22 along the first direction a and the second connection position 1422 on the side of the spindle portion 142 away from the rotor 22 along the first direction a, the distance between the first bearing 5 and the second bearing 6 is increased, thereby increasing the installation stability of the spindle portion 142.

[0089] like Figure 3 As shown, in some embodiments, the machine base 1 further defines a wiring cavity 16 connected to the accommodating cavity 11, the wiring cavity 16 is located outside the accommodating cavity 11 along the radial direction of the traction wheel 3, and a fifth opening 161 is provided at one end of the wiring cavity 16 away from the accommodating cavity 11, the machine base 1 is provided with a wiring board 17 covering the fifth opening 161, and a fourth sealing ring 171 is sandwiched between the wiring board 17 and the machine base 1.

[0090] The fifth opening 161 is covered by the wiring board 17 , and a fourth sealing ring 171 is sandwiched between the wiring board 17 and the base 1 , thereby reducing the probability of water entering the wiring cavity 16 .

[0091] Combination Figure 1 and Figure 2 As shown, specifically, the base 1 further includes a wiring seat 19, which is connected to the first base body 13 and is located on the side of the first base body 13 away from the second base body 14 in the radial direction of the traction wheel 3. The first base body 13 defines a wiring cavity 16, and the wiring seat 19 is provided with a waterproof cable fixing head 191. The wire can be connected to the wiring cavity 16 through the waterproof cable fixing head 191, thereby reducing the difficulty of wiring.

[0092] Combination Figure 2 and Figure 7 As shown, in some embodiments, the rotor 22 is formed with a process hole 223 that penetrates the rotor 22 along the thickness direction of the rotor 22, and the driving device 2 includes a threaded member 24 and a sealing belt (not shown in the figure), the threaded member 24 is arranged in the process hole 223, the sealing belt is wrapped around the threaded member 24, and is clamped between the threaded member 24 and the inner wall of the process hole 223.

[0093] The process hole 223 is blocked by the threaded member 24 , and the gap between the process hole 223 and the threaded member 24 is filled by the sealing tape, thereby reducing the probability of water entering the process hole 223 .

[0094] The threaded member 24 can be a threaded member such as a screw or a bolt.

[0095] Combination Figure 1 and Figure 2 As shown, in some embodiments, the traction machine 100 also includes a brake (not shown in the figure) and a waterproof cover 7, the brake is arranged on the machine base 1, the waterproof cover 7 defines a waterproof cavity 71 open at one end, the brake is located in the waterproof cavity 71, the machine base 1 covers the open end of the waterproof cavity 71, and a fifth sealing ring 72 is clamped between the waterproof cover 7 and the machine base 1.

[0096] The open end of the waterproof cavity 71 is sealed by the machine base 1 , and a fifth sealing ring 72 is provided between the waterproof cover 7 and the machine base 1 , thereby reducing the probability of water entering the waterproof cavity 71 .

[0097] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A traction machine, characterized in that: include: A base defines a receiving cavity, wherein the receiving cavity forms a first opening at a first end of the base along a first direction; A driving device, comprising a stator and a rotor, wherein the stator is disposed in the accommodating cavity, the rotor is rotatably disposed on the base and sealed on the first opening, and a first sealing ring is sandwiched between the rotor and a peripheral wall of the first opening; A traction wheel, arranged on the rotor; Wherein, the first direction is parallel to the rotation axis of the traction wheel.

2. The traction machine according to claim 1, characterized in that: The base also defines a support cavity, the accommodating cavity is arranged outside the support cavity, the support cavity forms a second opening at the first end of the base, the rotor includes a rotating shaft portion and a first connecting portion, the rotating shaft portion is rotatably arranged in the support cavity, the first connecting portion is arranged around the rotating shaft portion, the first connecting portion covers the first opening and the second opening, and the first sealing ring is sandwiched between the first connecting portion and the peripheral wall of the first opening.

3. The traction machine according to claim 2, characterized in that: The machine base has a second end arranged opposite to the first end along the first direction, and the support cavity forms a third opening at the second end. The traction machine also includes a coding component, which is arranged on the machine base and covers the third opening. A second sealing ring is sandwiched between the coding component and the machine base, and the coding component is connected to the rotating shaft part through the third opening.

4. The traction machine according to claim 3, characterized in that: The encoding component comprises: An encoder seat, disposed on the machine base and covering the third opening, the second sealing ring being sandwiched between the encoder seat and the machine base along the first direction, and the encoder seat defining a mounting cavity communicating with the third opening; The encoder comprises a main body and a rotating shaft, wherein the main body is arranged in the installation cavity, one end of the rotating shaft is located in the installation cavity and connected to the main body, and the other end of the rotating shaft is located in the supporting cavity and connected to the rotating shaft.

5. The traction machine according to claim 4, characterized in that: A fourth opening is provided on the side of the installation cavity away from the third opening. The encoding assembly also includes a cover plate and a third sealing ring. The cover plate is detachably provided on the encoder seat and closes the fourth opening. The third sealing ring is clamped between the cover plate and the encoder seat along the first direction.

6. The traction machine according to claim 2, characterized in that: The machine base includes a first seat body and a second seat body, the first seat body is arranged outside the second seat body, the first seat body defines the accommodating cavity, the second seat body defines the supporting cavity, and a heat dissipation cavity is defined between the first seat body and the second seat body, at least a part of the heat dissipation cavity is opposite to the accommodating cavity in the radial direction of the traction wheel, and a heat dissipation opening is formed at the end of the heat dissipation cavity away from the first end.

7. The traction machine according to claim 6, characterized in that: The second seat body includes a second connecting portion and a spindle portion defining the support cavity, the spindle portion is provided with a first connecting position, at least part of the first connecting position is opposite to the traction wheel along the radial direction of the traction wheel, the traction machine includes a first bearing, the first bearing is sleeved on the rotating shaft portion and clamped between the rotating shaft portion and the first connecting position, one end of the second connecting portion is connected to the first seat body, and the other end of the second connecting portion is connected to the first connecting position.

8. The traction machine according to claim 7, characterized in that: The traction machine also includes a second bearing, and the central shaft portion is also provided with a second connecting position, the second bearing is sleeved on the rotating shaft portion and clamped between the rotating shaft portion and the second connecting position, the first connecting position is located on a side of the central shaft portion close to the rotor along the first direction, and the second connecting position is located on a side of the central shaft portion away from the rotor along the first direction.

9. The traction machine according to any one of claims 1 to 8, characterized in that: The machine base also defines a wiring cavity connected to the accommodating cavity, the wiring cavity is located outside the accommodating cavity along the radial direction of the traction wheel, a fifth opening is provided at one end of the wiring cavity away from the accommodating cavity, the machine base is provided with a wiring board covering the fifth opening, and a fourth sealing ring is sandwiched between the wiring board and the machine base.

10. The traction machine according to any one of claims 1 to 8, characterized in that: The rotor is formed with a process hole that penetrates the rotor along the thickness direction of the rotor. The driving device includes a threaded part and a sealing belt. The threaded part is arranged in the process hole. The sealing belt is wound around the threaded part and is clamped between the threaded part and the inner wall of the process hole.

11. The traction machine according to any one of claims 1 to 8, characterized in that: The traction machine also includes a brake and a waterproof cover. The brake is arranged on the machine base. The waterproof cover defines a waterproof cavity with one end open. The brake is located in the waterproof cavity. The machine base covers the open end of the waterproof cavity. A fifth sealing ring is sandwiched between the waterproof cover and the machine base.

12. An elevator system, characterized in that: include: A traction machine as claimed in any one of claims 1 to 11.

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