An ultra-thin disc traction machine

Abstract

The present invention discloses an ultra-thin disc-type traction machine, which is an axial magnetic flux permanent magnet traction machine, including a housing, a stator assembly, a rotor assembly, a sensor device, a brake, a shutter, etc. The traction rope groove on the axial magnetic flux traction machine is located in the housing, and two traction holes are arranged on the housing, and the traction rope surrounding the traction rope groove extends from the two traction holes. The ultra-thin disc-type traction machine of the present invention has fewer parts, simple installation, compact overall structure, good heat dissipation effect, especially the axial length is extremely short, the safe operation of the traction machine is guaranteed, and personalized needs can be met.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet synchronous traction machines, and in particular to an ultra-thin disc type traction machine. Background Art

[0002] In order to reduce construction costs and save installation space, flat permanent magnet synchronous traction machines are increasingly being used. Traditional thin permanent magnet synchronous traction machines are usually radial flux structures, with traction rope grooves and brake wheels arranged on both sides of the rotor. The traction machine has a long axial length, poor heat dissipation, and many parts, making it difficult to meet personalized needs.

[0003] In order to shorten the axial length of the traction machine and increase the heat dissipation effect, a flat traction motor with Chinese patent number 201920699563.2 has appeared. However, the traction rope groove of this type of structure is arranged on the outside of the shell, and a traction rope anti-jump device still needs to be installed. In addition, there is no protection on the heat dissipation holes of this type of structure, and debris can easily fall into the stator and rotor through the heat dissipation holes, the gap between the brake disc and the rotor, which will affect the safe operation of the traction machine. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an ultra-thin disc-type traction machine to address the deficiencies of existing flat permanent magnet synchronous traction machines. The ultra-thin disc-type traction machine has fewer parts, simple installation steps, compact overall structure, good heat dissipation effect and good protection, and is fully functional. In particular, its axial length is extremely short, which can meet personalized needs. It can solve the deficiencies of the above-mentioned traditional flat permanent magnet synchronous traction machines.

[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0006] An ultra-thin disc-type traction machine is an axial flux permanent magnet traction machine, comprising a shell, a stator assembly, and a rotor assembly. The invention is characterized in that a traction rope groove on the rotor assembly is located in the shell, two traction holes are arranged on the shell, and the traction rope surrounding the traction rope groove extends from the two traction holes.

[0007] In a preferred embodiment of the present invention, the housing is composed of at least an annular wall and a bottom wall, the annular wall is located at the periphery of the traction rope groove and serves as a traction rope anti-jump device; two traction holes are opened on the annular wall.

[0008] In a preferred embodiment of the present invention, at least one heat dissipation and observation hole is provided on the bottom wall, and a louver is provided on the outer side of the heat dissipation and observation hole to prevent debris from falling into the axial flux permanent magnet traction machine.

[0009] In a preferred embodiment of the present invention, the shutter is mounted on the bottom wall by fasteners to facilitate disassembly.

[0010] In a preferred embodiment of the present invention, the central axis of the stator assembly of the axial flux permanent magnet traction machine coincides with the central axis of the rotor assembly; a bearing mounting portion is provided at the center of the bottom wall and a stator mounting portion is provided on the bottom wall, the stator mounting portion is located between the bearing mounting portion and the annular wall; the stator assembly is located in the stator mounting portion and fixed to the bottom wall; the rotor assembly comprises a rotor, a bearing and a permanent magnet group, the rotor having a bearing seat portion, a permanent magnet group mounting portion and a traction rope groove setting portion, the central axis of the bearing seat portion coincides with the central axis of the traction rope groove setting portion, the permanent magnet group mounting portion is located between the bearing seat portion and the traction rope groove setting portion; the bearing seat portion is mounted on the bearing mounting portion through the bearing, the permanent magnet group is mounted on the permanent magnet group mounting portion and corresponds to the stator assembly; the traction rope groove is arranged on the outer periphery of the traction rope groove setting portion.

[0011] In a preferred embodiment of the present invention, a brake disc connected to the rotor is arranged outside the outer periphery of the traction rope groove setting portion, and at least one brake is installed on the outer periphery of the annular wall of the shell. During braking, the brake is actuated to brake the brake disc.

[0012] In a preferred embodiment of the present invention, a throw-off groove is provided on the outer periphery of the traction rope groove setting portion, and the throw-off groove is located between the traction rope groove and the brake disc. When the throw-off groove rotates with the rotor, the debris falling from the gap between the brake disc and the housing can be thrown out to prevent the debris from falling into the traction rope groove area and the inside of the stator assembly and the rotor assembly, thereby ensuring the safe operation of the axial flux permanent magnet traction machine.

[0013] In a preferred embodiment of the present invention, a plurality of first blades are evenly distributed on the inner circumference of the traction rope groove setting portion, and when the first blades rotate along with the rotor, cooling wind is formed to cool the stator assembly.

[0014] In a preferred embodiment of the present invention, a plurality of second blades are provided on the periphery of the bearing seat portion, and when the second blades rotate along with the rotor, cooling wind is formed to cool the stator assembly.

[0015] In a preferred embodiment of the present invention, the first blades, the second blades, the traction rope grooves and the rotor are all directly cast in an integrated structure.

[0016] In a preferred embodiment of the present invention, a turning wheel and a sensed tooth are provided on the outer periphery of the brake disc, and a marking groove is provided on the turning wheel and the sensed tooth; a sensor device is installed on the housing, and the sensor device captures the position information of the turning wheel, the sensed tooth and the marking groove, and the sensor device, the turning wheel, the sensed tooth and the marking groove constitute an encoder structure.

[0017] In a preferred embodiment of the present invention, a winch device is installed on the housing, and the winch device, the winch device and the inducted tooth realize the winch function together.

[0018] Compared with the prior art, the effect of the present invention is positive and obvious. Compared with the flat permanent magnet synchronous traction machine manufactured by the prior art, the ultra-thin disc traction machine provided by the present invention has fewer parts, simple installation, compact overall structure, good heat dissipation effect, and especially extremely short axial length, so the safe operation of the traction machine is guaranteed and can meet personalized needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a cross-sectional view of the ultra-thin disc type traction machine of the present invention.

[0021] Figure 2 It is a structural diagram of the ultra-thin disc traction machine of the present invention.

[0022] Figure 3 It is a bottom view of the ultra-thin disc type traction machine of the present invention.

[0023] Figure 4 4 is a structural diagram of a shell according to an embodiment of the present invention.

[0024] Figure 5 4 is a structural diagram of a stator assembly according to an embodiment of the present invention.

[0025] Figure 6 4 is a structural diagram of a rotor according to an embodiment of the present invention.

[0026] Figure 7 It is an enlarged structural diagram of the rotor according to an embodiment of the present invention.

[0027] Figure 8 2 is a structural diagram of a shutter according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0029] See also Figures 1 to 8The ultra-thin disc traction machine shown in the figure is an axial flux permanent magnet traction machine. The axial flux permanent magnet traction machine includes a housing 100, a stator assembly 200, a rotor assembly 300, a retaining spring 400, a cover plate 500, a brake 600, a junction box assembly 700, a sensor device 810, a shutter 820, a lifting ring 830, etc.

[0030] The housing 100 is integrally composed of an annular wall 101, a bottom wall 102 and a base 103. A bearing mounting portion 120 is disposed at the center of the bottom wall 102, and a stator mounting portion 110 and two heat dissipation and observation holes 160 are disposed on the bottom wall 102. The stator mounting portion 110 is located between the bearing mounting portion 120 and the annular wall 101.

[0031] The bearing mounting portion 120 has an inner hole 121 for ventilation. A retaining ring groove 130 is also provided at the outer end of the outer periphery of the bearing mounting portion 120 .

[0032] Two traction holes 140 are provided on the annular wall 101, and a junction box assembly mounting portion 190 and two brake mounting brackets 170 are provided on the outer periphery of the annular wall 101. The two brake mounting brackets 170 are symmetrically arranged on the left and right sides of the junction box assembly mounting portion 190. A wire outlet hole 191 is provided on the outer periphery of the annular wall 101 at a position corresponding to the junction box assembly mounting portion 190. A lifting eye hole 192 and a turning device mounting hole 180 are provided on the junction box assembly mounting portion 190.

[0033] A sensor installation hole 150 is provided on the base 103 .

[0034] The stator assembly 200 includes a stator core assembly 210 and a winding 220 , wherein the winding 220 is wound around the stator core assembly 210 .

[0035] The rotor assembly 300 includes a rotor 310, a bearing 320, and a permanent magnet group 330. The rotor 310 has a bearing seat 312, a permanent magnet group mounting portion 311, and a traction rope groove setting portion 303. The central axis of the bearing seat 312 coincides with the central axis of the traction rope groove setting portion 303. The permanent magnet group mounting portion 311 is located between the bearing seat 312 and the traction rope groove setting portion 303. The outer periphery of the bearing seat 312, the inner wall of the permanent magnet group mounting portion 311, and the inner periphery of the traction rope groove setting portion 303 jointly define a space 301 containing the stator assembly 200 and the permanent magnet group 330. The traction rope groove 313 is arranged on the outer periphery of the traction rope groove setting portion 303.

[0036] A brake disc 315 connected to the rotor 310 is arranged outside the outer periphery of the traction rope groove setting part 303 , and a throw-off groove 314 is arranged on the outer periphery of the traction rope groove setting part 303 . The throw-off groove 314 is located between the traction rope groove 313 and the brake disc 315 .

[0037] A turning wheel and an induced tooth 316 are disposed on the outer periphery of the brake disc 315 , and at least one marking groove 317 is disposed on the turning wheel and the induced tooth 316 .

[0038] A plurality of first blades 319 are evenly distributed on the inner periphery of the traction rope groove setting portion 303 , and a plurality of second blades 318 are arranged on the outer periphery of the bearing seat portion 301 .

[0039] The installation process of the above axial flux permanent magnet traction machine is as follows:

[0040] First, the bearing 320 is pressed into the bearing mounting hole 312a of the bearing seat portion 312 of the rotor 310, and the permanent magnet group 330 is bonded to the permanent magnet group mounting portion 311 of the rotor 310. At this point, the rotor assembly 300 is completed.

[0041] Then, the stator core assembly 210 in the stator assembly 200 is placed in the stator mounting portion 110 and fixed to the bottom wall 102 by screws 201. Then, the bearing 320 in the rotor assembly 300 is installed on the bearing mounting portion 120, so that the central axis of the stator assembly 200 coincides with the central axis of the rotor assembly 300.

[0042] Then, the retaining ring 400 is inserted into the retaining ring groove 130 on the bearing mounting portion 120 to limit the axial position of the bearing 320 .

[0043] Then, the cover plate 500 is installed on the bearing seat 312 of the rotor 310 by means of screws 501 . The cover plate 500 rotates together with the rotor assembly 300 . Meanwhile, the cover plate 500 and the bottom wall 102 of the housing 100 prevent dust from entering the bearing 320 .

[0044] After the axial flux permanent magnet traction machine and the housing 100 are installed, the traction rope groove 313 is located in the annular wall 101 of the housing 100 .

[0045] Finally, the sensor device 810 is installed in the sensor device installation hole 150 by screws; the shutter 820 is installed at the heat dissipation and observation hole 160 and fixed on the bottom wall 102 by screws; the two brakes 600 are installed on the two brake mounting brackets 170 by screws; the junction box assembly 710 is installed on the junction box assembly installation part 190 by screws, and the cables of the stator assembly 200 are connected to the corresponding terminals in the junction box assembly 700 through the outlet hole 191, and then the junction box cover 720 is installed on the junction box assembly installation part 190 by screws to protect the junction box assembly 700; the lifting ring 830 is installed in the lifting ring hole 192, and the winch device is inserted into the winch device installation hole 180 to realize the winch function. At this point, the ultra-thin disc traction machine of this embodiment is completed.

[0046] The installation steps of this embodiment are not fixed, and the corresponding steps can be adjusted according to actual needs.

[0047] It is worth noting that in this specific embodiment: the two traction holes 140 on the shell 100 are arranged in a symmetrical manner. In fact, the two traction holes 140 can be asymmetrically arranged according to the requirements of the traction rope wrap angle; the inner circumferential size of the annular wall 101 of the shell 100 is determined according to the size of the traction rope groove 313, so that the shell has the function of a traction rope anti-jump device, and the traction machine does not need to install a traction rope anti-jump device separately.

[0048] The core assembly 610 and the brake mounting bracket 170 in the brake 600 are located on the same side of the brake disc 315 ; when braking, the core assembly 610 moves, driving the armature assembly 620 to move, thereby braking the brake disc 315 .

[0049] The second blades 318 and the first blades 319 are arranged on the inner side and the outer side of the stator assembly 200 to increase the ventilation and heat dissipation effects.

[0050] Two groups of heat dissipation and observation holes 160 are provided, and several groups can be provided according to actual needs, which is beneficial to heat dissipation and has the functions of assisting the installation and observation of the traction rope.

[0051] The shutter 820 protects the heat dissipation and observation hole 160 to prevent debris from falling into the stator assembly 200 and the rotor assembly 300 .

[0052] The throw-off groove 314 is disposed between the traction rope groove 313 and the brake disc 315 , and can prevent debris falling from the gap between the brake disc 315 and the housing 100 from falling into the traction rope groove 313 and the interior of the stator assembly 200 and the rotor assembly 300 .

[0053] The second blade 318, the first blade 319, the traction rope groove 313, and the rotor 310 are directly cast as an integral structure, and may actually be three separate structures or two separate structures mounted by screws or welding.

[0054] The turning wheel and the sensed tooth 316 can be used as turning wheel teeth and sensed teeth at the same time. A marking groove 317 is provided on the turning wheel and the sensed tooth 316. The sensor device 810 captures the position information of the turning wheel and the sensed tooth 316 and the marking groove 317. The three constitute an encoder structure.

[0055] A turning device installation hole 180 is provided on the junction box assembly installation portion 190 of the housing 100 , and the turning device can be directly inserted into the turning device installation hole 180 to realize the turning function.

[0056] In summary, the ultra-thin disc traction machine of this specific embodiment: the stator assembly 200 and the permanent magnet group 330 generate torque through the interaction of axial magnetic flux, with fewer parts, simple installation steps, compact overall structure, good heat dissipation effect and good protection, the safe operation of the traction machine is guaranteed, and it is fully functional, especially the axial length is extremely short, which can meet personalized needs.

[0057] In this embodiment, the two bearings 320 have the same size and structure only for the convenience of drawing and brief description.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ultra-thin disc traction machine, which is an axial flux permanent magnet traction machine, comprising a housing, a stator assembly, and a rotor assembly, characterized in that: The traction rope groove on the rotor assembly is located in the housing, and two traction holes are provided on the housing. The traction rope surrounding the traction rope groove extends out from the two traction holes. The housing is composed of at least one annular wall and one bottom wall, wherein the annular wall is located at the periphery of the traction rope groove and serves as a traction rope anti-jump device; two traction holes are provided on the annular wall; The central axis of the stator assembly of the axial flux permanent magnet traction machine coincides with the central axis of the rotor assembly; a bearing mounting portion is provided at the center of the bottom wall and a stator mounting portion is provided on the bottom wall, the stator mounting portion is located between the bearing mounting portion and the annular wall; the stator assembly is located in the stator mounting portion and fixed to the bottom wall; the rotor assembly comprises a rotor, a bearing and a permanent magnet group, the rotor having a bearing seat portion, a permanent magnet group mounting portion and a traction rope groove setting portion, the central axis of the bearing seat portion coincides with the central axis of the traction rope groove setting portion, the permanent magnet group mounting portion is located between the bearing seat portion and the traction rope groove setting portion; the bearing seat portion is mounted on the bearing mounting portion through the bearing, the permanent magnet group is mounted on the permanent magnet group mounting portion and corresponds to the stator assembly; the traction rope groove is arranged on the outer periphery of the traction rope groove setting portion; A brake disc connected to the rotor is arranged outside the outer periphery of the traction rope groove setting part, and at least one brake is installed on the outer periphery of the annular wall of the housing. When braking, the brake is actuated to brake the brake disc; A throw-away groove is arranged on the outer periphery of the traction rope groove setting portion, and the throw-away groove is located between the traction rope groove and the brake disc. When the throw-away groove rotates with the rotor, the debris falling from the gap between the brake disc and the housing can be thrown out to prevent the debris from falling into the traction rope groove and the inside of the stator assembly and the rotor assembly, thereby ensuring the safe operation of the axial flux permanent magnet traction machine.

2. The ultra-thin disc traction machine according to claim 1, characterized in that: At least one heat dissipation and observation hole is provided on the bottom wall, and a louver is also provided on the outer side of the heat dissipation and observation hole to prevent debris from falling into the axial flux permanent magnet traction machine.

3. The ultra-thin disc traction machine according to claim 2, characterized in that: The shutter is mounted on the bottom wall by fasteners to facilitate disassembly.

4. The ultra-thin disc traction machine according to claim 3, characterized in that: A plurality of first blades are evenly distributed on the inner circumference of the traction rope groove setting portion. When the first blades rotate along with the rotor, cooling wind is formed to cool the stator assembly.

5. The ultra-thin disc traction machine according to claim 4, characterized in that: A plurality of second blades are arranged on the outer periphery of the bearing seat portion. When the second blades rotate along with the rotor, cooling wind is formed to cool the stator assembly.

6. The ultra-thin disc traction machine according to claim 5, characterized in that: The first blade, the second blade, the traction rope groove and the rotor are all directly cast in an integrated structure.

7. The ultra-thin disc traction machine according to claim 1, characterized in that: A turning wheel and a sensed tooth are arranged on the outer periphery of the brake disc, and a marking groove is arranged on the turning wheel and the sensed tooth; a sensor device is installed on the shell, and the sensor device captures the position information of the turning wheel, the sensed tooth and the marking groove. The sensor device, the turning wheel, the sensed tooth and the marking groove constitute an encoder structure.

8. The ultra-thin disc traction machine according to claim 7, characterized in that: A winch device is installed on the housing, and the winch device, the winch device and the inducted tooth realize the winch function together.

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