Driving main engine, escalator and moving sidewalk

Abstract

The invention discloses a driving main machine, an escalator and a moving sidewalk. The driving main machine comprises a main machine shell, a motor rotating shaft installed on the main machine shell, a synchronous motor assembly, a gear transmission assembly, a power output shaft, a frequency converter assembly and a shaft brake. The motor rotating shaft is installed on the main machine shell and penetrates through the motor cavity and the transmission cavity in the main machine shell. The gear transmission assembly is arranged on one side of the motor rotating shaft in the radial direction of the motor rotating shaft, one end of the power output shaft is located in the transmission cavity and can be in transmission connection with the motor rotating shaft through the gear transmission assembly, and the other end forms an output end. The frequency converter assembly is arranged in the frequency converter cavity of the main machine shell and electrically connected with the synchronous motor assembly. Therefore, on one hand, the overall size of the driving main machine can be reduced, the driving main machine is more compact in structure, and the effects of improving transmission efficiency and reducing cost are achieved; and on the other hand, harmonic interference generated in the running process of the driving host can be reduced, and the effect of improving the running reliability of the driving host is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to motor drive, and in particular relates to a driving host, an escalator and a moving walkway. Background Art

[0002] The drive host is an important component of an escalator or moving walkway, and is used to provide power for the operation of the corresponding escalator or moving walkway.

[0003] The drive host in existing escalators or moving walkways is usually assembled from three-phase asynchronous motors, brakes, frequency converters, worm gear transmissions and other components. The three-phase asynchronous motor not only needs to be electrically connected to the frequency converter and relies on the frequency converter to control its operating state, but also needs to be mechanically connected to the brake and worm gear transmission respectively. During the operation of the drive host, the worm gear transmission is responsible for speed adjustment of the output power of the three-phase asynchronous motor, while the brake is used to achieve rapid braking in an emergency to ensure the safety of the equipment. However, since the above-mentioned three-phase asynchronous motor, brake, frequency converter and worm gear transmission are independent individuals, the drive host is assembled to form the drive host, which makes the drive host have the problems of dispersed structure and low integration; and limited by the structural characteristics of the three-phase asynchronous motor, the variable speed transmission of the worm gear makes the drive host have the problems of large overall size, low transmission efficiency and high cost. Summary of the invention

[0004] In view of this, it is necessary to provide a driving host, an escalator and a moving walkway with a compact structure and a small size.

[0005] A driving host, the driving host comprising:

[0006] A main housing is formed with a motor cavity, a transmission cavity and a frequency converter cavity, wherein the motor cavity is communicated with the transmission cavity and the frequency converter cavity respectively;

[0007] The motor shaft is mounted on the main housing and passes through the motor cavity and the transmission cavity.

[0008] A synchronous motor assembly is accommodated in the motor cavity and cooperates with the motor shaft;

[0009] A gear transmission assembly is accommodated in the transmission cavity of the main housing, and the gear transmission assembly is transmission-connected to the motor shaft and is located on one side of the motor shaft;

[0010] A power output shaft, one end of which is located in the transmission cavity and is transmission-connected to the motor shaft through the gear transmission assembly, and the other end of which constitutes an output end;

[0011] A frequency converter assembly is accommodated in the frequency converter cavity of the main housing and is electrically connected to the motor shaft and the synchronous motor assembly, and is used to control the operation of the motor shaft and the synchronous motor assembly;

[0012] The shaft brake is drivingly connected to the motor shaft and is used to control the locking / unlocking of the motor shaft.

[0013] It can be understood that the synchronous motor assembly, the gear transmission assembly, and the frequency converter assembly are integrated into one, and when the drive host is running, the output end of the synchronous motor assembly and the transmission input end of the gear transmission assembly are the same motor shaft, and the gear transmission assembly is used to realize the speed adjustment between the motor shaft and the power output shaft; on the one hand, this can reduce the overall volume of the drive host and make the structure of the drive host more compact, which has the effect of improving transmission efficiency and reducing costs; on the other hand, it can also reduce the harmonic interference generated when the drive host is running, thereby improving the operating reliability of the drive host.

[0014] In one embodiment, the gear transmission assembly includes:

[0015] An input helical gear is disposed on the motor shaft and is drivingly connected to the motor shaft;

[0016] A transmission gear set, comprising a first transmission gear, a gear shaft and a second transmission gear, wherein the first transmission gear meshes with the input helical gear, the first transmission gear and the second transmission gear are coaxially arranged and synchronously connected through the gear shaft, and the gear shaft is rotatably installed in the transmission cavity;

[0017] Transmission connection, the gear shaft is rotatably mounted on the main housing;

[0018] an output gear, which is arranged on the power output shaft and is synchronously connected with the power output shaft, and the output gear meshes with the second transmission gear;

[0019] Among them, the motor shaft, the gear shaft and the power output shaft are arranged in parallel; a primary gear transmission structure is formed between the input bevel gear and the first transmission gear, and a secondary gear transmission structure is formed between the second transmission gear and the output gear, and along the axial direction of the gear shaft, the primary gear transmission structure and the secondary gear transmission structure are staggered.

[0020] It can be understood that, through the structural setting of the above-mentioned gear transmission assembly, a two-stage gear transmission between the motor shaft and the power output shaft can be realized, which not only meets the speed adjustment between the motor shaft and the power output shaft, but also plays a role in reducing the assembly space required for the installation of the gear transmission assembly; in addition, the transmission noise is further reduced through the transmission connection between the input bevel gear and the gear transmission assembly.

[0021] In one embodiment, the motor shaft has a first transmission part and a second transmission part, and the motor shaft can be connected to the motor rotor in the synchronous motor assembly through the first transmission part, and the motor shaft can be connected to the gear transmission assembly through the second transmission part;

[0022] Along the axial direction of the motor shaft, the motor shaft is rotatably connected to the main housing through bearing groups on both sides of the first transmission part and on both sides of the second transmission part.

[0023] It can be understood that, by setting the bearing group rotatably connected between the motor shaft and the main housing, effective support of the motor shaft on the main housing can be achieved, which can not only reduce the disturbance deformation of the motor shaft during operation and the gear meshing in the gear transmission assembly, but also reduce the noise generated by the gear transmission assembly during power transmission.

[0024] In one embodiment, the portion of the motor shaft located in the motor cavity and the portion located in the transmission cavity are both installed with end bearing groups, and the middle portion of the motor shaft is installed with a middle bearing group;

[0025] The main housing is provided with a bracket, the bracket is located between the motor cavity and the transmission cavity and connects the motor cavity and the transmission cavity, and the middle bearing group is installed on the bracket.

[0026] In one embodiment, the main housing includes a first housing and a second housing, the first housing and the second housing are butted and connected and fixed along the axial direction of the power output shaft; and the motor cavity is formed on one side of the first housing, and a transmission cavity is formed between the other side of the first housing and the second housing;

[0027] Wherein, the main housing further includes a frequency converter housing, and the frequency converter housing is respectively connected to the first housing and the second housing to enclose and form the frequency converter cavity.

[0028] It can be understood that the first shell forms the motor cavity on the one hand, and can also be combined with the second shell to form a transmission cavity on the other hand, which can simplify the structure of the main housing and has the effect of reducing costs and volume.

[0029] In one embodiment, the motor cavity is disposed on one side of the main housing in the axial direction of the motor shaft, and the transmission cavity and the frequency converter cavity are disposed on the other side of the main housing in the axial direction of the motor shaft; and the frequency converter cavity is disposed directly above the transmission cavity.

[0030] It can be understood that through the above-mentioned position settings of the motor cavity, the transmission cavity and the frequency converter cavity, the overall structure of the main housing can be made compact.

[0031] In one embodiment, along the radial direction of the motor shaft, the splicing seam when the first housing and the second housing are butted is oriented towards the projection of the gear transmission assembly and is disposed on the output gear or the first transmission gear of the gear transmission assembly;

[0032] Wherein, the output gear is disposed on the power output shaft and is in transmission connection with the power output shaft; the first transmission gear is disposed on the gear shaft of the gear transmission assembly and is in transmission connection with the motor shaft.

[0033] It can be understood that through the above-mentioned structural settings of the first housing and the second housing, the gear transmission assembly can be first assembled on the first housing and then the second housing can be covered. This not only facilitates the assembly of the gear transmission assembly and improves the assembly accuracy, thus being beneficial to reducing the noise generated during the power transmission of the gear transmission assembly, but also enables the first housing and the second housing to be independently manufactured, which has the effect of ensuring the product accuracy during the processing of the first housing and the second housing.

[0034] In one embodiment, the main housing includes a first housing and a second housing, and the first housing and the second housing are butted and fixedly connected along the axial direction of the power output shaft;

[0035] And a transmission cavity is formed by enclosing between the first housing and the second housing, and the transmission cavity is used for accommodating the gear transmission assembly.

[0036] In one embodiment, the main housing is configured as a metal housing, and heat dissipation rib plates are provided on the main housing, and the main housing can dissipate heat through the heat dissipation rib plates.

[0037] It can be understood that the main housing can be used for heat dissipation during the operation of the drive host, which can improve the heat dissipation effect during the operation of the drive host, and thus improve the operation reliability of the drive host.

[0038] In one embodiment, the shaft brake includes:

[0039] A brake disc, sleeved on the motor shaft and in transmission connection with the motor shaft;

[0040] A brake movable plate, a brake static plate and an induction coil, wherein the brake movable plate and the brake static plate are sequentially arranged on one side of the brake disc, and the induction coil is installed on the brake static plate. When the power is on or off, the brake movable plate is attracted or released to drive the brake movable plate to reciprocate relative to the brake disc and control the locking / unlocking of the brake disc;

[0041] A spin-on cover is arranged on a side of the brake static plate away from the brake dynamic plate and is screwed to the brake static plate, the spin-on cover includes a pressure regulating portion, and the spin-on cover is provided with a plurality of limiting grooves at the position of the pressure regulating portion, and the plurality of limiting grooves are sequentially spaced along the circumferential direction of the brake static plate;

[0042] A torque adjustment assembly is arranged through the brake static plate, the torque adjustment assembly includes a pressure regulating column and a first elastic element, the first elastic element is arranged between the brake movable plate and the pressure regulating column in a pre-compressed manner, and one end of the pressure regulating column away from the first elastic element abuts against the pressure regulating portion;

[0043] When the spin-on cover rotates relative to the brake static plate, the spin-on cover can drive the first elastic element to deform through the pressure regulating column, and make the pressure regulating column enter and exit the limiting groove.

[0044] It can be understood that the control of the deformation of the first elastic element when the rotary cover rotates on the brake static plate can realize the adjustment of the pressing force of the first elastic element on the brake dynamic plate, so that the braking torque of the shaft brake can be adjusted to meet different torque requirements; in this process, the feedback generated when the pressure regulating column enters and exits the limiting groove can be used to achieve the purpose of prompting the user, which can not only improve the user's operating experience when adjusting the braking torque of the shaft brake, but also provide real-time feedback during the adjustment process of the braking torque of the shaft brake to prevent excessive adjustment, thereby avoiding the unrecognizable risk of excessive adjustment of the shaft brake.

[0045] In one embodiment, the shaft brake further comprises a guide positioning pin, which is mounted on the brake static plate and slidably connected to the brake movable plate, and is used to guide the reciprocating motion of the brake movable plate relative to the brake static plate;

[0046] Furthermore, one end of the guide positioning pin that is away from the brake movable plate abuts against the main housing in a radial direction of the motor shaft to limit position.

[0047] It can be understood that through the structural setting of the above-mentioned guiding positioning pin, on the one hand, it can ensure the consistency of the movement direction of the moving plate of the brake, avoid jamming during the movement of the moving plate of the brake, and prevent the brake disc from being subjected to frictional resistance during the rotation following the motor rotating shaft when the shaft brake is not braked, thereby playing a role in ensuring the operation stability of the shaft brake; on the other hand, the guiding positioning pin can bear the shear torque force during the braking of the shaft brake, thereby playing a role in improving the operation stability of the shaft brake.

[0048] The present application also provides an escalator, including the drive host described above.

[0049] The present application also provides a moving walkway, including the drive host described above.

[0050] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0051] The drive host, escalator and moving walkway claimed in the present application integrate the synchronous motor assembly, gear transmission assembly and frequency converter assembly into one. When the drive host operates, a common motor rotating shaft is shared between the synchronous motor assembly and the gear transmission assembly, and the gear transmission assembly is used to realize the speed change adjustment between the motor rotating shaft and the power output shaft; on the one hand, this can reduce the overall volume of the drive host and make the structure of the drive host more compact, playing a role in improving the transmission efficiency and reducing the cost; on the other hand, it can also reduce the harmonic interference generated during the operation of the drive host, playing a role in improving the operation reliability of the drive host. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0053] Figure 1 It is a schematic structural diagram of the drive host provided by the present application.

[0054] Figure 2 It is a sectional view of the drive host provided by the present application.

[0055] Figure 3 It is a partial sectional view of the drive host provided by the present application.

[0056] Figure 4 It is a schematic structural diagram of the shaft brake in the present application.

[0057] Figure 5This is a cross-sectional view of the shaft brake of the present application.

[0058] Figure 6 It is Figure 5 An enlarged view of part P in

[0059] Figure 7 This is a schematic structural view of the swivel cover and the pressure regulating column in the present application when they are matched.

[0060] Reference numerals: 100, driving main machine; 10, main machine housing; 101, motor cavity; 102, transmission cavity; 103, frequency converter cavity; 110, heat dissipation rib plate; 121, first housing; 122, second housing; 13, frequency converter housing; 20, synchronous motor assembly; 21, motor rotating shaft; 211, first transmission part; 212, second transmission part; 22, motor stator; 23, motor rotor; 24, bearing group; 241, end bearing group; 242, middle bearing group; 25, end cover; 26, bracket; 31, gear transmission assembly; 311, input helical gear; 312, transmission gear group; 3121, first transmission gear; 3122, gear shaft; 3123, second transmission gear; 313, output gear; 32, power output shaft; 40, frequency converter assembly; 50, shaft brake; 51, brake disc; 521, brake moving plate; 522, brake static plate; 5221, opening groove; 5222, U-shaped channel; 523, induction coil; 53, swivel cover; 530, pressure regulating part; 531, limit groove; 532, screwing part; 533, scale line; 534, extension convex part; 54, torque adjusting assembly; 541, pressure regulating column; 5411, ball head; 5412, extension convex column; 542, first elastic element; 55, torque assembly; 551, adjusting screw; 552, flat washer; 553, second elastic element; 56, guiding and positioning pin; 57, transition plate; 58, hollow bolt. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0062] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0064] As Figure 1 , Figure 2 shown, the drive host 100 provided by this application includes a host shell 10, a motor rotating shaft 21, a synchronous motor assembly 20, a gear transmission assembly 31, a power output shaft 32, a frequency converter assembly 40, and a shaft brake 50. A motor cavity 101, a transmission cavity 102, and a frequency converter cavity 103 are formed on the host shell 10. The motor cavity 101 is respectively communicated with the transmission cavity 102 and the frequency converter cavity 103; the motor rotating shaft 21 is installed on the host shell 10 and penetrates through the motor cavity 101 and the transmission cavity 102; the synchronous motor assembly 20 is matched with the motor rotating shaft 21 and is accommodated in the motor cavity 101; the gear transmission assembly 31 is accommodated in the transmission cavity 102 of the host shell 10, and the gear transmission assembly 31 is in transmission connection with the motor rotating shaft 21 and is specifically arranged on one side in the axial direction of the motor rotating shaft 21; specifically, if the transmission cavity 102 is defined along the axial direction of the motor rotating shaft 21, then the upper part of the transmission cavity 102 located above the motor rotating shaft 21 is the upper cavity of the transmission cavity 102, and the lower part of the transmission cavity 102 located below the motor rotating shaft 21 is the lower cavity of the transmission cavity 102. The gear transmission assembly 31 can be arranged in the upper cavity or the lower cavity. In one embodiment, the gear transmission assembly is arranged below the motor rotating shaft 21, that is, in the lower cavity of the transmission cavity 102. In this way, it helps to reasonably configure the overall weight and optimize the compactness of the overall structure; one end of the power output shaft 32 is located in the transmission cavity 102 and is in transmission connection with the motor rotating shaft 21 through the gear transmission assembly 31, and the other end constitutes the output end; the frequency converter assembly 40 is accommodated in the frequency converter cavity 103 of the host shell 10 and is electrically connected to the motor rotating shaft 21 and the synchronous motor assembly 20 for controlling the operation of the synchronous motor assembly 20; the shaft brake 50 is in transmission connection with the motor rotating shaft 21 for controlling the locking / unlocking of the motor rotating shaft 21. That is to say, the host shell 10 of the drive host 100 in this embodiment integrates the shell structures of the original independent synchronous motor assembly 20, gear transmission assembly 31, and frequency converter assembly 40 together, which can save some shell materials and reduce costs.

[0065] As can be seen from the above, the drive host 100 of the present application integrates the synchronous motor assembly 20, the gear transmission assembly 31, and the frequency converter assembly 40 into one body. When the drive host 100 operates, the output end of the motor rotating shaft 21 and the transmission input end of the gear transmission assembly 31 are the same motor rotating shaft 21, that is, a coaxial structure design. The gear transmission assembly 31 is used to realize the speed change adjustment between the motor rotating shaft 21 and the power output shaft 32. On the one hand, this can reduce the overall volume of the drive host 100 and make the structure of the drive host 100 more compact in the radial direction of the motor rotating shaft 21, which has the effect of improving the transmission efficiency and reducing costs. On the other hand, it can also reduce the harmonic interference generated during the operation of the drive host 100, which plays a role in improving the operation reliability of the drive host 100 and reducing the operation noise. In addition, reducing the connection of components such as couplings required for multi-axis docking not only helps to reduce the source of noise, but also plays a role in reducing costs and reducing the volume.

[0066] As Figure 1 , Figure 2 shown, in an embodiment, the main housing 10 includes a first housing 121, a second housing 122, and a frequency converter housing 13. The first housing 121 and the second housing 122 are docked and fixedly connected along the axial direction of the power output shaft 32. And, a motor cavity 101 is formed by enclosing one side of the first housing 121, and a transmission cavity 102 is formed by enclosing between the other side of the first housing 121 and the second housing 122. The frequency converter housing 13 is respectively connected to the first housing 121 and the second housing 122 and encloses to form a frequency converter cavity 103. In this way, the first housing 121 is used to enclose the motor cavity 101 and part of the transmission cavity 102 at the same time. Here, the first housing 121 can be integrally cast. On the one hand, this can make the axial part between the synchronous motor assembly 20 and the gear transmission assembly 31 more compact, which is beneficial to reducing the overall operation noise of the drive host 100. On the other hand, it can also improve the structural strength of the main housing 10 and make the rigidity of the main housing 10 better. It can be understood that in other embodiments, the first housing 121 can also be configured with a split structure, and the assembly of the first housing 121 can be specifically realized by connection methods such as welding or fasteners, which will not be elaborated here.

[0067] As Figure 1 , Figure 2 shown, in this embodiment, the motor cavity 101 is arranged on one side of the main housing 10, and the transmission cavity 102 and the frequency converter cavity 103 are arranged on the other side of the main housing 10. And, the frequency converter cavity 103 is arranged directly above the transmission cavity 102. In this way, the overall structure of the main housing 10 can be made compact.

[0068] It should be noted that between the above-mentioned first housing 121 and the second housing 122, and between the frequency converter housing 13 and the first housing 121 and the second housing 122, bolted connections (not shown in the figure) can be respectively adopted for assembly. Moreover, during the assembly process with bolts, a positioning pin (not shown in the figure) can be used for assembly positioning first. It should be noted that the specific method of using bolts to assemble and connect between the first housing 121 and the second housing 122, and between the frequency converter housing 13 and the first housing 121 and the second housing 122 can be specifically set according to the usage requirements, and will not be elaborated here.

[0069] In this embodiment, the main housing 10 is configured as a metal housing. Moreover, heat dissipation rib plates 110 are provided on the main housing 10, and the main housing 10 can dissipate heat through the heat dissipation rib plates 110. This can improve the heat dissipation effect during the operation of the drive main unit 100, thereby improving the operation reliability of the drive main unit 100. Here, a part of the heat dissipation rib plates 110 can be arranged along the axial direction of the motor rotating shaft 21 at the position of the first housing 121 in the motor cavity 101, and the remaining part can be arranged along the radial direction of the motor rotating shaft 21 at the positions of the first housing 121 and the second housing 122 in the transmission cavity 102.

[0070] As Figure 2 shown, in this embodiment, the first housing 121 and the second housing 122 form a square cavity area on the same side. When the frequency converter housing 13 is arranged in this square cavity area and is respectively connected to the first housing 121 and the second housing 122, the frequency converter housing 13 can form the above-mentioned frequency converter cavity 103 together with the first housing 121 and the second housing 122 for accommodating part of the frequency converter components 40; that is to say, the first housing 121 and the second housing 122 in this embodiment jointly constitute part of the housing structure of the frequency converter components 40, and integrate part of the assembly space required during the assembly of the frequency converter components 40 onto the first housing 121, playing a role in further reducing the overall volume of the drive main unit 100. Here, in this embodiment, the frequency converter cavity 103 for accommodating the frequency converter components 40 can also be filled with glue for sealing as required to ensure the sealing performance of the assembly of the frequency converter components 40 in the drive main unit 100.

[0071] As Figure 2 、 Figure 3As shown, in one embodiment, the synchronous motor assembly 20 includes a motor stator 22 and a motor rotor 23. The motor stator 22 is fixedly installed in the motor cavity 101 of the first housing 121. A permanent magnet (not shown) is installed on the motor rotor 23 and is installed on the first transmission part 211 of the motor rotating shaft 21 through structures such as a central shaft hole and a key. Among them, two bearing groups 24 are assembled on the first transmission part 211 of the motor rotating shaft 21. The two bearing groups 24 are arranged on both sides of the first transmission part 211 of the motor rotating shaft 21 in the axial direction of the motor rotating shaft 21 and are respectively installed and fixed on the motor end cover 25 and the first housing 121. Among them, the motor end cover 25 is fixed to the first housing 121 by a screw assembly for covering the motor cavity 101 and supporting the bearing group 24. Here, the motor rotor 23 and the motor stator 22 are arranged in the middle and aligned in the axial direction of the motor rotating shaft 21, so that the motor rotor 23 can rotate around the central axis of the synchronous motor assembly 20 driven by the motor rotating shaft 21.

[0072] As Figure 3 shown, in one embodiment, the gear transmission assembly 31 includes an input helical gear 311, a transmission gear set 312, and an output gear 313. The input helical gear 311 is arranged on the second transmission part 212 of the motor rotating shaft 21 and is in transmission connection with the motor rotating shaft 21. Specifically, the input helical gear 311 can be directly machined on the second transmission part 212 of the motor rotating shaft 21, or the input helical gear 311 can be sleeved on the second transmission part 212 of the motor rotating shaft 21. The transmission gear set 312 includes a first transmission gear 3121, a gear shaft 3122, and a second transmission gear 3123. The first transmission gear 3121 is in meshing cooperation with the input helical gear 311. The first transmission gear 3121 and the second transmission gear 3123 are coaxially arranged and are synchronously connected by the gear shaft 3122. Among them, the gear shaft 3122 is rotatably installed in the transmission cavity 102. The output gear 313 is sleeved on the power output shaft 32 and is in transmission connection with the power output shaft 32. And the output gear 313 is in meshing cooperation with the second transmission gear 3123. That is to say, the input helical gear 311 is in meshing cooperation with the first transmission gear 3121 to form a first-stage gear transmission structure of the gear transmission assembly 31, and the second transmission gear 3123 is in meshing cooperation with the output gear 313 to form a second-stage gear transmission structure of the gear transmission assembly 31. And along the axial direction of the gear shaft 3122, the first-stage gear transmission structure and the second-stage gear transmission structure are arranged in a staggered manner. This can meet the use requirements of speed change adjustment between the motor rotating shaft 21 and the power output shaft 32. And the transmission gear set 312 can also utilize the coaxial arrangement between the first transmission gear 3121 and the second transmission gear 3123, so that part of the assembly space of the input helical gear 311 and the output gear 313 can be integrated into the position where the transmission gear set 312 is located, thereby playing a role in reducing the assembly space required for the installation of the transmission gear set 312.

[0073] As Figure 2 , Figure 3 shown, in this embodiment, the motor rotating shaft 21, the gear shaft 3122 and the power output shaft 32 are arranged in parallel; and, along the axial direction of the gear shaft 3122, the primary gear transmission structure formed between the input helical gear 311 and the first transmission gear 3121 is arranged in a staggered manner with the secondary gear transmission structure formed between the second transmission gear 3123 and the output gear 313.

[0074] As Figure 2 , Figure 3 shown, in this embodiment, bearing groups 24 are respectively sleeved on both sides of the first transmission part 211 and both sides of the second transmission part 212 of the motor rotating shaft 21, so that both sides of the first transmission part 211 and the second transmission part 212 on the motor rotating shaft 21 that are used for bearing are supported by the bearing groups 24. In this way, effective support for the motor rotating shaft 21 can be realized, ensuring that the motor rotating shaft 21 will not be deformed due to insufficient support. Thus, not only can the deflection deformation of the motor rotating shaft 21 during operation and gear meshing in the gear transmission assembly 31 be reduced, but also the noise generated during the power transmission process of the gear transmission assembly 31 can be reduced.

[0075] As Figure 2 , Figure 3 shown, in this embodiment, end bearing groups 241 are installed on the part of the motor rotating shaft 21 located in the motor cavity 101 and the part located in the transmission cavity 102, and a middle bearing group 242 is installed in the middle of the motor rotating shaft 21; among them, a bracket 26 is provided on the main housing 10, and the bracket 26 is located between the motor cavity 101 and the transmission cavity 102 and communicates with the motor cavity 101 and the transmission cavity 102, and the middle bearing group 242 is installed on the bracket 26. That is to say, in this embodiment, three bearing groups 24 can be used to support both sides of the first transmission part 211 and both sides of the second transmission part 212 on the motor rotating shaft 21, so as to reduce the number of the bearing groups 24. Here, the middle part of the above-mentioned motor rotating shaft 21 specifically refers to the part of the motor rotating shaft 21 located between the two end bearing groups 241, rather than the absolute center position of the motor rotating shaft 21. It can be understood that the number of the above-mentioned bearing groups 24 can also be four, and specifically, two independent bearing groups 24 can be respectively used to support both sides of the first transmission part 211 and both sides of the second transmission part 212 on the motor rotating shaft 21. It should be noted that the bracket 26 for supporting the bearing group 24 in the middle position can be connected to the first housing 121 as a whole, or can be an independent component fixed on the first housing 121, and will not be elaborated here.

[0076] As Figure 2 , Figure 3As shown, in this embodiment, along the radial direction of the motor rotating shaft 21, the splicing seam when the first housing 121 and the second housing 122 are butted is arranged on the output gear 313 or the first transmission gear 3121 of the gear transmission assembly 31 in the projection direction of the gear transmission assembly 31. That is to say, in this embodiment, the first housing 121 and the second housing 122 for enclosing the transmission cavity 102 are arranged in a left and right half-sectional distribution along the radial direction of the gears in the gear transmission assembly 31. Specifically, connection structures such as screws and pins can be used to connect and fix the butted first housing 121 and the second housing 122. This can not only ensure the product accuracy during the processing of the first housing 121 and the second housing 122, but also enable the gear transmission assembly 31 to be assembled under a relatively open condition, facilitating the assembly of the gear transmission assembly 31 and improving the assembly accuracy, thereby being beneficial to reducing the noise generated during the power transmission process of the gear transmission assembly 31.

[0077] It should be noted that according to the operation and control principle of the synchronous motor, the variable frequency speed regulation of the synchronous motor (including the motor rotating shaft 21 and the synchronous motor assembly 20) is driven and controlled by the frequency converter assembly 40, and the frequency converter assembly and the synchronous motor usually need to be connected by a cable. When the driving host 100 is running, the frequency converter assembly 40 and the synchronous motor assembly 20 are the main sources of harmonics, and the harmonics generated by the frequency converter assembly 40 and the synchronous motor assembly 20 can propagate along the power cable group connecting the frequency converter assembly 40 and the synchronous motor assembly 20. The longer the power cable group is, the greater the harmonic interference, the higher the generated harmonic voltage, showing a significant superposition and amplification effect; and the excessive harmonic voltage, etc. will in turn affect the normal operation of the synchronous motor assembly 20 and the frequency converter assembly 40, and even cause insulation breakdown, damaging the system safety service life of the synchronous motor assembly 20 and the frequency converter assembly 40, etc.

[0078] The driving host 100 of the present application integrates the frequency converter assembly 40, the synchronous motor assembly 20 and the gear transmission assembly 31 into one body. On the one hand, this can shorten the length of the power cable group (not shown in the figure) required for the electrical connection between the frequency converter assembly 40 and the synchronous motor assembly 20, which can significantly suppress the propagation and amplification effect of harmonics between the frequency converter assembly 40 and the synchronous motor assembly 20, being beneficial to the reliable operation of the frequency converter assembly 40 and the synchronous motor assembly 20; it is also beneficial to the operation of the synchronous motor assembly 20 and the adaptation between the synchronous motor assembly 20 and the frequency converter assembly 40, making the overall operation performance of the driving host 100 better and more stable. On the other hand, it can also make full use of the low oil temperature lubricating oil in the transmission cavity 102 and structures such as the main housing 10 and the heat dissipation rib plate 110 on the main housing 10 to achieve sufficient heat dissipation, so that the frequency converter assembly 40 operates more stably.

[0079] Such as Figure 4 、 Figure 5As shown, in one embodiment, the shaft brake 50 includes a brake disc 51, a brake movable plate 521, a brake static plate 522, an induction coil 523, a rotary cover 53 and a torque adjustment component 54. The brake disc 51 is mounted on the motor shaft 21 and is transmission-connected to the motor shaft 21; the brake movable plate 521 and the brake static plate 522 are sequentially arranged on one side of the brake disc 51, and the induction coil 523 is installed on the brake static plate 522. When the power is on or off, the brake movable plate 521 is attracted or released to drive the brake movable plate 521 to reciprocate relative to the brake disc 51 and control the locking / unlocking of the brake disc 51; the rotary cover 53 is arranged on the side of the brake static plate 522 away from the brake movable plate 521 and is screwed to the brake static plate 522. The rotary cover 53 The invention comprises a pressure regulating part 530; and the rotary pressing cover 53 is provided with a plurality of limiting grooves 531 at the position of the pressure regulating part 530, and the plurality of limiting grooves 531 are sequentially arranged at intervals along the circumferential direction of the brake static plate 522; the torque regulating assembly 54 is arranged through the brake static plate 522, and the torque regulating assembly 54 comprises a pressure regulating column 541 and a first elastic element 542, and the first elastic element 542 is arranged between the brake movable plate 521 and the pressure regulating column 541 in a pre-compressed manner, and one end of the pressure regulating column 541 away from the first elastic element 542 abuts against the pressure regulating part 530; when the rotary pressing cover 53 rotates relative to the brake static plate 522, the rotary pressing cover 53 can drive the first elastic element 542 to deform through the pressure regulating column 541, and make the pressure regulating column 541 enter and exit the limiting groove 531. That is to say, the shaft brake 50 realizes the braking operation of the motor shaft 21 on the synchronous motor assembly 20 by disconnecting the induction coil 523. Here, the pressure regulating column 541 enters and exits the limiting groove 531, specifically, the pressure regulating column 541 enters the limiting groove 531 from other parts of the pressure regulating part 530 except the limiting groove 531, and the pressure regulating column 541 leaves the limiting groove 531 to other parts of the pressure regulating part 530 except the limiting groove 531.

[0080] As can be seen from the above, the shaft brake 50 of this embodiment utilizes the rotary pressing cover 53 to control the deformation of the first elastic element 542 when it rotates on the brake static plate 522, so as to adjust the pressing force of the first elastic element 542 on the brake movable plate 521, so that the braking torque of the shaft brake 50 can be adjusted to meet different torque requirements; in this process, the feedback generated when the pressure regulating column 541 enters and exits the limiting groove 531 can be utilized to achieve the purpose of prompting the user, which not only improves the user's operating experience when adjusting the braking torque of the shaft brake 50, but also provides real-time feedback during the adjustment process of the braking torque of the shaft brake 50 to prevent excessive adjustment, thereby avoiding the risk of unrecognizable caused by excessive adjustment of the shaft brake 50.

[0081] In this application, the number of upper limit grooves 531 on the pressure regulating part 530 of the spinning cover 53 is a large number, which can be adaptively set according to actual usage requirements to ensure that each adjustment of the braking torque of the shaft brake 50 can make the pressure regulating column 541 enter and exit at least two limit grooves 531; the shaft brake 50 of this application achieves the purpose of adjusting the braking torque by rotating the spinning cover 53. Since the pressure regulating column 541 has a tendency to move towards the pressure regulating part 530 under the elastic pushing of the first elastic element 542, combined with the concave structure of the limit groove 531, using the action and reaction forces, when the pressure regulating column 541 enters and exits the limit groove 531, the pressure regulating column 541 will collide with the pressure regulating part 530 of the spinning cover 53, causing the spinning cover 53 to generate a tactile feeling and a sound for the user in turn, so as to serve the purpose of prompting the user.

[0082] It should be noted that when the spinning cover 53 rotates on the brake static plate 522, it can realize the switching of the pressure regulating column 541 between different limit grooves 531 on the spinning cover 53 and control the deformation of the first elastic element 542 to compress or reset. In this way, the adjustment angle of the spinning cover 53, the entry and exit of different limit grooves 531 on the spinning cover 53 for the pressure regulating column 541, and the deformation of the first elastic element 542 have a one-to-one correspondence. That is, there is a one-to-one correspondence between the adjustment angle of the spinning cover 53 and the pre-compression amount of the first elastic element 542. Specifically, as Figure 1 shown, when the spinning cover 53 rotates clockwise and realizes the switching between two adjacent limit grooves 531, the corresponding adjustment angle of the spinning cover 53 is 20°, and the torque of the first elastic element 542 correspondingly increases by 21 N, and vice versa, the torque of the first elastic element 542 correspondingly decreases by 21 N.

[0083] As Figure 5 shown, in an embodiment, the induction coil 523 is assembled into the brake static plate 522 in an embedded manner to realize the assembly connection of the induction coil 523 on the brake static plate 522. That is to say, the induction coil 523 of this embodiment is housed in the brake static plate 522, so that the assembly of the induction coil 523 on the brake static plate 522 does not occupy space and is convenient for assembling the induction coil 523 onto the brake static plate 522.

[0084] As Figure 5 shown, in this embodiment, an opening groove 5221 is provided at one end of the brake static plate 522 facing away from the spinning cover 53. The opening groove 5221 is used to house the induction coil 523 and realize the assembly of the induction coil 523 inside the brake static plate 522. Here, the opening groove 5221 is provided on the periphery of the torque adjusting assembly 54.

[0085] As Figure 6 、Figure 7 As shown, in one embodiment, the pressure regulating column 541 has a ball head 5411, and the pressure regulating column 541 can abut against the pressure regulating part 530 through the ball head 5411; wherein, the ball head 5411 is arranged to match the limiting groove 531. That is to say, the shaft brake 50 of this embodiment can use the ball head 5411 to enter and exit the limiting groove 531. In this way, by using the structural characteristics of the ball head 5411, the frictional resistance when the ball head 5411 enters and exits the limiting groove 531 can be reduced, so that the ball head 5411 on the pressure regulating column 541 can smoothly enter and exit the limiting groove 531. Here, the limiting groove 531 is configured as an arc groove matching the ball head 5411. It can be understood that in other embodiments, the limiting groove 531 can also be in other irregular shapes such as an arc shape or a square shape. Of course, the part of the pressure regulating column 541 for abutting against the pressure regulating part 530 can also adopt a convex structure with a square shape, a triangular shape or other regular shapes, which will not be elaborated here.

[0086] As Figure 5 、 Figure 7 As shown, in one embodiment, the central axis of the spinning cover 53 and the central axis of the brake static plate 522 are arranged on the same straight line; wherein, a screwing part 532 is arranged on the spinning cover 53, and the screwing part 532 is used for plugging and matching with an external screwing tool to drive the spinning cover 53 to rotate relative to the brake static plate 522. That is to say, the user can act on the screwing part 532 on the spinning cover 53 through an external screwing tool to realize the driving of the spinning cover 53 to rotate on the brake static plate 522, so as to facilitate the user to drive the spinning cover 53 to rotate on the brake static plate 522. Here, the screwing part 532 is configured with a square groove opened at the rotation center position of the spinning cover 53. It can be understood that in other embodiments, the screwing part 532 can also be configured with a triangular groove opened at the rotation center position of the spinning cover 53, or the screwing part 532 can be configured as a square head protruding from the spinning cover 53 away from the brake static plate 522, which will not be elaborated here.

[0087] As Figure 2 、 Figure 4 As shown, in this embodiment, a part of the spinning cover 53 protrudes towards the brake static plate 522 and forms an extending convex part 534. Correspondingly, a U-shaped channel 5222 is opened on the brake static plate 522, and the extending convex part 534 extends into the U-shaped channel 5222, and the extending convex part 534 can enter and exit the U-shaped channel 5222 along the central axis of the brake static plate 522 under the drive of the spinning cover 53, and control the first elastic element 542 to undergo compression or reset deformation. Here, the screwing part 532 is arranged at the position of the extending convex part 534 of the spinning cover 53.

[0088] As Figure 4As shown, in one embodiment, one of the swaging cover 53 and the brake stator plate 522 is marked with a scale line 533, and the other is provided with a mark (not shown in the figure). The mark can be aligned with the scale line 533 to guide the adjustment of the rotation of the swaging cover 53 on the brake stator plate 522. That is to say, the shaft brake 50 of this embodiment can use the scale of the scale line 533 to quantify the rotation angle when the swaging cover 53 rotates on the brake stator plate 522, and realize the visualization of the braking torque adjustment of the shaft brake 50, which can improve the accuracy of the braking torque adjustment of the shaft brake 50 to meet the use requirements of the on-site working conditions. Here, the scale line 533 is marked on the swaging cover 53, and the scale line 533 is circular as a whole, and the mark is arranged on the brake stator plate 522. It can be understood that in other embodiments, the scale line can also be marked on the brake stator plate 522, and correspondingly, the mark is arranged on the swaging cover 53.

[0089] It should be noted that since the pressing force of the first elastic element 542 on the brake moving plate 521 changes linearly, and there is a positive correlation between the rotation angle when the swaging cover 53 rotates on the brake stator plate 522 and the deformation of the first elastic element 542, this enables the user to control the rotation angle when the swaging cover 53 rotates on the brake stator plate 522, so as to achieve the purpose of controlling different pressing forces of the first elastic element 542 on the brake moving plate 521.

[0090] As Figure 5 shown, in one embodiment, the number of the torque adjustment assemblies 54 is configured in multiple groups, and the multiple groups of torque adjustment assemblies 54 are symmetrically arranged about the central axis of the brake moving plate 521. So that the multiple groups of torque adjustment assemblies 54 in the shaft brake 50 cooperate with each other and jointly realize the flat pushing drive of the brake moving plate 521 towards the brake disc 51, so that the brake moving plate 521 is uniformly pressed. Here, the number of the torque adjustment assemblies 54 is configured in two groups, three groups, four groups, or even more groups, which will not be elaborated here.

[0091] As Figure 6 shown, in one embodiment, an extension convex column 5412 is provided on the pressure regulating column 541. The extension convex column 5412 is inserted into the first elastic element 542 and is in plug-in fit with the first elastic element 542, so as to realize the abutting limit between the first elastic element 542 and the pressure regulating column 541, which can ensure the stability of the power transmission between the pressure regulating column 541 and the first elastic element 542. Here, the first elastic element 542 of this embodiment is configured as a compression spring. It can be understood that in other embodiments, the first elastic element 542 can also be configured as a rubber sleeve, or other highly elastic elastic fittings, which will not be elaborated here.

[0092] As Figure 5As shown, in one embodiment, the shaft brake 50 further includes a torque assembly 55. The torque assembly 55 is disposed around the swaging cover 53 and penetrates through the brake stator plate 522. Here, the number of the torque assemblies 55 is configured to be four groups. The four groups of torque assemblies 55 are arranged on the brake stator plate 522 in a left-right symmetric manner, so that the four groups of torque assemblies 55 cooperate with each other and jointly achieve the purpose of pushing the brake rotor plate 521 flatly towards the brake disc 51, so that the brake rotor plate 521 is evenly pressed. It can be understood that in other embodiments, the number of the torque assemblies 55 can also be three groups, five groups, six groups, or even more groups, which will not be elaborated here.

[0093] As Figure 5 shown, in this embodiment, the torque assembly 55 includes an adjusting screw 551, a flat washer 552, and a second elastic element 553. The adjusting screw 551 is screwed onto the brake stator plate 522. The second elastic element 553 is disposed between the brake rotor plate 521 and the flat washer 552 in a pre-compressed manner. One end of the flat washer 552 facing away from the second elastic element 553 abuts against one end of the adjusting screw 551 located inside the brake stator plate 522. That is to say, in this embodiment, the abutting pressure of the second elastic element 553 pushing the brake rotor plate 521 can be adjusted by screwing the adjusting screw 551. Here, the second elastic element 553 is also configured as a compression spring, a rubber sleeve, or other accessories with high elasticity.

[0094] It should be noted that the torque assembly 55 and the torque adjusting assembly 54 of this embodiment are jointly used for the abutting pressure when pushing the brake rotor plate 521. Among them, the abutting pressure of the torque assembly 55 when pushing the brake rotor plate 521 is set according to the requirement of the braking torque when the shaft brake 50 leaves the factory; when the shaft brake 50 is applied in the field working condition, specifically, the abutting pressure of the torque adjusting assembly 54 when pushing the brake rotor plate 521 can be adjusted by screwing the swaging cover 53, and the purpose of adjusting the braking torque of the shaft brake 50 is achieved.

[0095] As Figure 5As shown, in one embodiment, the shaft brake 50 further includes a guiding and positioning pin 56. The guiding and positioning pin 56 is installed on the brake static plate 522 and is slidably connected to the brake moving plate 521, and is used to guide the reciprocating movement of the brake moving plate 521 relative to the brake disc 51. Moreover, one end of the guiding and positioning pin 56 facing away from the brake moving plate 521 abuts against and is limited by the main housing 10 in the radial direction of the motor rotating shaft 21. This enables the guiding and positioning pin 56 to, on the one hand, ensure the consistency of the direction of movement of the brake moving plate 521, avoid jamming during the movement of the brake moving plate 521, and prevent the brake disc 51 from being subjected to frictional resistance during the rotation following the motor rotating shaft 21 when the shaft brake 50 is not braking, thereby playing a role in ensuring the operating stability of the shaft brake 50. On the other hand, it can also withstand the shear torque force when the shaft brake 50 brakes, thereby playing a role in improving the operating stability of the shaft brake 50. Here, the guiding and positioning pin 56 is arranged on the periphery of the brake disc 51 to avoid interference between the guiding and positioning pin 56 and the brake disc 51. Moreover, a part of the guiding and positioning pin 56 is inserted into the brake static plate 522 and is connected to the brake static plate 522 in an interference fit manner. Moreover, the brake moving plate 521 can specifically adopt a linear bushing (not shown in the figure) to slidably cooperate with the guiding and positioning pin 56.

[0096] It should be noted that if the brake disc 51 is subjected to frictional resistance during rotation following the motor rotating shaft 21, the temperature of the shaft brake 50 will be increased by the way of heat generation by friction. With the increase in the temperature of the shaft brake, the electromagnetic performance of the shaft brake 50 will be weakened, thereby reducing the service life of the shaft brake 50.

[0097] In this embodiment, the number of the guiding and positioning pins 56 is configured to be two. The two guiding and positioning pins 56 can simultaneously guide the movement of the brake moving plate 521 to ensure the stability of the movement of the brake moving plate 521. It can be understood that in other embodiments, the number of the guiding and positioning pins 56 can also be configured to be three, four, or even more, which will not be elaborated here.

[0098] Such as Figure 5As shown, in one embodiment, the shaft brake 50 further includes a transition plate 57. The transition plate 57 is disposed on the side of the brake disc 51 facing away from the brake actuator plate 521 and is fixedly connected to the main housing 10. Further, the transition plate 57 is assembled on the side of the transmission cavity 102 of the main housing 10 facing away from the motor cavity 101. And, the brake actuator plate 521 can lock the brake disc 51 to the transition plate 57; wherein, one end of the guide positioning pin 56 facing away from the brake actuator plate 521 is inserted into the transition plate 57 and is in clearance fit with the transition plate 57. So that the guide positioning pin 56 can bear the shear torque force when the shaft brake 50 brakes, thereby improving the operating stability of the shaft brake 50. Here, the transition plate 57 is specifically used to be connected to the main housing 10.

[0099] As Figure 5 shown, the shaft brake 50 of the present application further includes a connection assembly, the connection assembly includes a hollow bolt 58 and a connection bolt (not shown in the figure). The hollow bolt 58 is disposed through the brake actuator plate 521. One end of the hollow bolt 58 passing through the brake actuator plate 521 is connected to the brake stator plate 522 in a threaded manner. The other end of the hollow bolt 58 abuts against the transition plate 57; and, a connection bolt is installed inside the hollow bolt 58, and the part of the connection bolt extending out of the hollow bolt 58 is screwed to the transition plate 57, thereby realizing the assembly and fixation between the transition plate 57 and the brake stator plate 522. For those skilled in the art, it can be undoubtedly determined that the clearance between the threaded section of the hollow bolt 58 located inside the brake actuator plate 521 and the brake actuator plate 521 is large and cannot guide the movement of the brake actuator plate 521. Similarly, the clearance between the threaded section of the connection bolt located inside the transition plate 57 and the transition plate 57 is also large; and, when the brake actuator plate 521 locks the brake disc 51 to the transition plate 57 and the rotating brake disc 51 is braked and stopped, during this process, the connection bolt in the connection assembly needs to bear a large shear torque force. Since the overall size of the connection bolt is small, it is easy to break due to the large shear torsional force, resulting in a braking failure of the shaft brake 50. Obviously, the shaft brake 50 of the present application can well solve the above-mentioned technical problems by setting the guide positioning pin 56, and play a role in improving the service life of the shaft brake 50.

[0100] As can be seen from the above, when the induction coil 523 is in the energized state, the brake actuator plate 521 will move towards the brake stator plate 522 under the action of the magnetic field generated when the induction coil 523 is energized and be adsorbed to the brake stator plate 522. At this time, the pressure on the brake disc 51 is removed and it can rotate with the motor rotating shaft 21; when the induction coil 523 is de-energized, the brake actuator plate 521 can move towards the brake disc 51 under the pushing of the first elastic element 542 and the second elastic element 553, and lock the brake disc 51 on the transition plate 57, thereby controlling the motor rotating shaft 21 to stop rotating.

[0101] The present application also provides an escalator, including the drive main machine 100 described above.

[0102] In addition, the present application also provides a moving walkway, including the drive main machine 100 described above.

[0103] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0104] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as within the scope of the essential spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. A driving host, characterized in that, The driving host (100) includes: A main housing (10) formed with a motor chamber (101), a transmission chamber (102), and an inverter chamber (103), wherein the motor chamber (101) is respectively communicated with the transmission chamber (102) and the inverter chamber (103); A motor rotating shaft (21) installed on the main housing (10) and passing through the motor chamber (101) and the transmission chamber (102); A synchronous motor assembly (20) accommodated in the motor chamber (101) and cooperating with the motor rotating shaft (21); A gear transmission assembly (31) accommodated in the transmission chamber (102) of the main housing (10), and the gear transmission assembly (31) is drivingly connected to the motor rotating shaft (21) and is located on one side of the motor rotating shaft (21); A power output shaft (32) with one end located in the transmission chamber (102) and drivingly connected to the motor rotating shaft (21) through the gear transmission assembly (31), and the other end constituting an output end; An inverter assembly (40) accommodated in the inverter chamber (103) of the main housing (10) and electrically connected to the motor rotating shaft (21) and the synchronous motor assembly (20) for controlling the operation of the motor rotating shaft (21) and the synchronous motor assembly (20); A shaft brake (50) drivingly connected to the motor rotating shaft (21) for controlling the locking / unlocking of the motor rotating shaft (21).

2. The drive host according to claim 1, characterized in that, The gear transmission assembly (31) includes: An input helical gear (311) provided on the motor rotating shaft (21) and drivingly connected to the motor rotating shaft (21); A transmission gear set (312) including a first transmission gear (3121), a gear shaft (3122), and a second transmission gear (3123), wherein the first transmission gear (3121) is meshed with the input helical gear (311), the first transmission gear (3121) and the second transmission gear (3123) are coaxially arranged and synchronously drivingly connected through the gear shaft (3122), and the gear shaft (3122) is rotatably installed in the transmission chamber (102); An output gear (313) provided on the power output shaft (32) and synchronously drivingly connected to the power output shaft (32), and the output gear (313) is meshed with the second transmission gear (3123); Wherein, the motor rotating shaft (21), the gear shaft (3122), and the power output shaft (32) are arranged in parallel; a first-stage gear transmission structure is formed between the input helical gear (311) and the first transmission gear (3121), a second-stage gear transmission structure is formed between the second transmission gear (3123) and the output gear (313), and along the axial direction of the gear shaft (3122), the first-stage gear transmission structure and the second-stage gear transmission structure are arranged in a staggered manner.

3. The drive host according to claim 1, characterized in that, The motor shaft (21) has a first transmission part (211) and a second transmission part (212). The motor shaft (21) can be in transmission connection with the motor rotor (23) in the synchronous motor assembly (20) through the first transmission part (211), and the motor shaft (21) can be in transmission connection with the gear transmission assembly (31) through the second transmission part (212). Along the axial direction of the motor shaft (21), the motor shaft (21) is rotatably connected to the main housing (10) through bearing groups (24) on both sides of the first transmission part (211) and on both sides of the second transmission part (212) respectively.

4. The drive host according to claim 3, characterized in that, End bearing groups (241) are installed on the part of the motor shaft (21) located in the motor cavity (101) and the part located in the transmission cavity (102), and a middle bearing group (242) is installed in the middle of the motor shaft (21). A bracket (26) is provided on the main housing (10). The bracket (26) is located between the motor cavity (101) and the transmission cavity (102) and communicates the motor cavity (101) and the transmission cavity (102). The middle bearing group (242) is installed on the bracket (26).

5. The drive host according to claim 1, wherein The main housing (10) includes a first housing (121) and a second housing (122). The first housing (121) and the second housing (122) are butted and fixedly connected along the axial direction of the power output shaft (32). Moreover, a motor cavity (101) is formed on one side of the first housing (121), and a transmission cavity (102) is formed by enclosing between the other side of the first housing (121) and the second housing (122). Wherein, the main housing (10) further includes an inverter housing (13). The inverter housing (13) is connected to the first housing (121) and the second housing (122) respectively and encloses to form an inverter cavity (103).

6. The drive host according to claim 1 or 5, characterized in that, The motor cavity (101) is arranged on one side of the main housing (10) in the axial direction of the motor shaft (21), and the transmission cavity (102) and the inverter cavity (103) are arranged on the other side of the main housing (10) in the axial direction of the motor shaft (21). Moreover, the inverter cavity (103) is arranged directly above the transmission cavity (102).

7. The drive host according to claim 5, characterized in that Along the radial direction of the motor shaft (21), the splicing seam when the first housing (121) and the second housing (122) are butted faces the projection of the gear transmission assembly (31) and is arranged on the output gear (313) or the first transmission gear (3121) of the gear transmission assembly (31). Wherein, the output gear (313) is arranged on the power output shaft (32) and is in transmission connection with the power output shaft (32); the first transmission gear (3121) is arranged on the gear shaft (3122) of the gear transmission assembly (31) and is in transmission connection with the motor shaft (21).

8. The drive host according to claim 1, characterized in that The main housing (10) is configured as a metal shell, and a heat dissipation rib plate (110) is provided on the main housing (10), and the main housing (10) can dissipate heat through the heat dissipation rib plate (110).

9. The drive host according to claim 1, characterized in that, The shaft brake (50) comprises: A brake disc (51) is mounted on the motor shaft (21) and is drivingly connected to the motor shaft (21); A brake movable plate (521), a brake static plate (522) and an induction coil (523), wherein the brake movable plate (521) and the brake static plate (522) are sequentially arranged on one side of the brake disc (51), and the induction coil (523) is installed on the brake static plate (522). When the power is on or off, the brake movable plate (521) is attracted or released to drive the brake movable plate (521) to reciprocate relative to the brake disc (51), and control the locking / unlocking of the brake disc (51); A spin-on cover (53) is arranged on a side of the brake static plate (522) away from the brake dynamic plate (521) and is screwed to the brake static plate (522), the spin-on cover (53) comprises a pressure regulating portion (530), and the spin-on cover (53) is provided with a plurality of limiting grooves (531) at the position of the pressure regulating portion (530), and the plurality of limiting grooves (531) are sequentially spaced along the circumferential direction of the brake static plate (522); A torque adjustment component (54) is arranged through the brake static plate (522), the torque adjustment component (54) comprises a pressure adjustment column (541) and a first elastic element (542), the first elastic element (542) is arranged between the brake dynamic plate (521) and the pressure adjustment column (541) in a pre-compressed manner, and an end of the pressure adjustment column (541) facing away from the first elastic element (542) abuts against the pressure adjustment portion (530); When the spin-on cover (53) rotates relative to the brake static plate (522), the spin-on cover (53) can drive the first elastic element (542) to deform through the pressure regulating column (541) and make the pressure regulating column (541) enter and exit the limiting groove (531).

10. The drive host according to claim 9, characterized in that, The shaft brake (50) further comprises a guide positioning pin (56), wherein the guide positioning pin (56) is mounted on the brake static plate (522) and is slidably connected to the brake movable plate (521), and is used to guide the reciprocating motion of the brake movable plate (521) relative to the brake static plate (522); Furthermore, one end of the guide positioning pin (56) that is away from the brake movable plate (521) abuts against the main housing (10) in a radial direction of the motor shaft (21) to limit position.

11. An escalator, characterized in that, The drive host (100) comprises any one of claims 1 to 10.

12. An escalator, characterized in that, The drive host (100) comprises any one of claims 1 to 10.

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