CN219362321U - Internal driving type electric roller - Google Patents

Abstract

The utility model aims to provide an inner driving type electric roller capable of automatically supplementing lubricating oil to each position in a power transmission mechanism, which comprises a driving motor and an outer roller body, wherein the driving motor further comprises a stator part and a rotor part, two ends of the stator part are respectively connected with bearing parts extending outwards, the bearing parts at two ends are respectively fixedly arranged on supporting seats at two ends, the rotor part is arranged at the inner side of the stator part, the outer roller body is in a hollow cylinder shape as a whole, and the outer roller body is sleeved and arranged at the outer side of the driving motor, and two ends of the outer roller body are respectively provided with a sealing cover plate for separating an inner cavity from the outside; the stator part comprises a main output end extending to one side and protruding, and a power transmission mechanism is further connected and installed between the main output end and the outer roller body; and a cavity between the driving motor and the outer roller body is filled with lubricating oil.

Description

Internal driving type electric roller

Technical Field

The utility model relates to the field of motorized rollers, in particular to an internal driving motorized roller.

Background

Motorized drum apparatuses are currently widely used in various forms of logistics sorting apparatus. Most electric rollers adopt a power mechanism with a motor and a speed reducer, and the motor is used as motive power to drive the roller body to rotate after being decelerated by the speed reducer. In some severe use situations, such as filling with dust, high temperature and high humidity, etc., in order to avoid corrosion damage of the generator component and the transmission component caused by environmental factors, most electric rollers will adopt a structural layout in which a driving motor and a driving mechanism are disposed inside the cavity of the outer roller body.

The efficient permanent magnet electric roller disclosed in the Chinese patent document of application number CN202220337176.6 comprises a roller shaft, a stator assembly, a rotor assembly, a driving end cover, a driven end cover and a roller body which are connected and matched, wherein the stator assembly comprises a stator shaft, the driving end cover is rotationally arranged at the outer end of the stator shaft, and the rotor assembly comprises a rotor shell.

The motor built-in electric roller disclosed in the Chinese patent document with the application number of CN202220362340.9 comprises a left supporting shaft, a right supporting part, a left cover, a right cover, a left bearing, a right bearing, a roller, a speed reducing device and a driving motor, wherein the two ends of the right supporting part are provided with the right supporting shaft and flange connecting parts, and the flange connecting parts of the right supporting part are fixedly connected with the flange connecting parts of the rear end cover of the driving motor; the left cover and the right cover are respectively and rotatably connected with the middle parts of the left support shaft and the right support part through a left bearing and a right bearing; the left end and the right end of the roller are fixedly connected with the outer circle of the left cover and the outer circle of the right cover respectively, the speed reducing device and the driving motor are positioned in the roller, and an output shaft of the speed reducing device is fixedly connected with the roller.

In these motorized drums with built-in motors, it is generally necessary to directly or indirectly connect the output end of the motor to the external drum in a gear-engaged manner to achieve power transmission. In view of the operating characteristics of the motor, a multi-stage gear drive is often employed between the drive motor and the external drum to increase the drum torque. In these cases, since the transmission mechanisms of each stage are located inside the closed outer drum cavity, it is extremely difficult to fill each position in the gear transmission mechanism with lubricating oil, which easily results in serious wear of local positions in the transmission mechanism after a certain period of use, vibration is caused, other parts are damaged, and even the whole drum cannot work.

In order to solve the problem, the utility model provides an internal driving type electric roller which can automatically supplement lubricating oil to each position in a power transmission mechanism.

Disclosure of Invention

The utility model provides an internal driving type electric roller which can automatically supplement lubricating oil to various positions in a power transmission mechanism.

The technical aim of the utility model is realized by the following technical scheme:

the inner driving type electric roller comprises a driving motor and an outer roller body, wherein the driving motor further comprises a stator part and a rotor part, two ends of the stator part are respectively connected with bearing parts extending outwards, the bearing parts at the two ends are respectively fixedly arranged on supporting seats at the two ends, the rotor part is arranged on the inner side of the stator part, and the rotor part can rotate in the electrified state of the driving motor; the whole outer roller body is in a hollow cylindrical shape, the outer roller body is sleeved and arranged on the outer side of the driving motor, and sealing plates for separating the inner cavity from the outside are respectively arranged at two ends of the outer roller body; the stator part comprises a main output end extending to one side and protruding, and a power transmission mechanism is further connected and installed between the main output end and the outer roller body; and a cavity between the driving motor and the outer roller body is filled with lubricating oil.

In the present utility model, the cover plate is fitted over the bearing portion in a sleeved manner, and a slewing bearing and a seal ring are installed between an inner wall surface of the cover plate and an outer wall surface of the bearing portion, the seal ring being located outside the slewing bearing.

Preferably, an attaching portion for driving the lubricating oil to rise upward along with the rotation of the outer cylinder body is formed on the inner wall of the outer cylinder body to the inner side.

Preferably, according to the present utility model, the liquid level of the lubricating oil is located below the driving motor.

Preferably, an inner driving gear ring is formed in the outer drum part, the power transmission mechanism comprises a plurality of gear meshing groups which are sequentially connected, the gear meshing group at the front end of the power transmission mechanism is meshed with the main output end, and the gear meshing group at the rear end of the power transmission mechanism is meshed with the inner driving gear ring.

Preferably, the stator part further comprises a secondary output end extending to the other side and protruding towards the other side, and one side of the secondary output end is provided with a control feedback unit for adjusting the operation of the driving motor.

As a preferred aspect of the present utility model, the control feedback unit includes a junction box and an encoder, the encoder is connected to the secondary output end and is capable of acquiring a rotation parameter of the rotor portion, and the junction box is electrically connected to the encoder and the driving motor at the same time, so as to adjust a real-time rotation state of the driving motor according to the rotation parameter acquired by the encoder.

Preferably, the encoder is connected with the auxiliary output end through a plurality of transition connection sections, a connection cavity is formed in the bearing part, and each transition connection section is located in the connection cavity.

Preferably, a pressure compensation device is mounted at one end of the bearing part.

In summary, the embodiment of the utility model can realize the following beneficial effects:

1. the inner cavity of the outer roller body is filled with the lubricating oil, the lubricating oil does not fill the inner cavity completely, excessive burden is not brought to the rotation of the roller, meanwhile, the lubricating oil can be lifted to the upper part of the roller in a state of being attached to the inner wall along with the rotation of the roller, and then drops to the position of a part of the transmission mechanism which is easy to wear from top to bottom, so that the friction effect among rotating parts is reduced, and the service life of equipment is prolonged. Meanwhile, the filling mode of the lubricating oil liquid does not need intervention of staff, and the working independence and the external interference resistance of an internal system are further improved.

2. The internal driving type electric roller provided by the utility model can absorb heat generated by local friction while reducing local abrasion among parts through the lubrication contact of the lubricating oil liquid, and can reduce the temperature rise of a transmission mechanism along with the downward dripping of the lubricating oil liquid into a lubricating oil liquid pool, and simultaneously, the heat is quickly and outwards transferred by utilizing the larger contact area between the lubricating oil liquid and the external roller body, so that local overheating of equipment is avoided.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of an internally driven motorized pulley;

FIG. 2 is a schematic diagram of a partial enlarged structure of a control feedback unit;

fig. 3 is a partially enlarged schematic view of the power transmission mechanism.

In the figure:

1-a driving motor, 1 a-a stator part, 101-a main output end, 102-an auxiliary output end, 1 b-a rotor part;

2-an outer roller body, 2 a-a cover plate, 2 b-an attachment part;

3-bearing part, 3 a-connecting cavity;

4, a supporting seat;

5-power transmission mechanism, 5 a-internal drive gear ring, 5 b-gear engagement set;

6-control feedback unit, 6 a-junction box, 6 b-encoder;

7-a transitional coupling section;

8-pressure compensation device.

Detailed Description

The following specific examples are intended to be illustrative of the utility model and are not intended to be limiting, as modifications of the utility model will be apparent to those skilled in the art upon reading the specification without inventive contribution thereto, and are intended to be protected by the patent law within the scope of the appended claims.

The scheme is realized by the following technical means:

in the internally driven motorized pulley presented in this solution, it mainly comprises a cylindrical outer pulley body 2, the inside of which outer pulley body 2 is formed with a hollow cavity for the installation of the drive motor 1 inside and a series of transmission mechanisms.

The driving motor 1, which is a source of rotational power of the outer drum body 2, may be roughly divided into two parts, a stator part 1a and a rotor part 1 b. The stator part 1a comprises a stator assembly formed by mutually combining a stator core and a stator coil, and also comprises a bracket shell for fixedly mounting the stator assembly; the two ends of the bracket shell are respectively fixedly connected with bearing parts 3 which extend outwards and are raised, and the bearing parts 3 at the two ends are respectively erected on supporting seats 4 at the two ends, so that the stator part 1a is fixed as a whole. The rotor part 1b is mounted in a hollow area inside the stator part 1a, and both ends of the center are rotatably mounted on the bracket housing through bearings, respectively. The driving motor 1 is electrically connected with an external power supply device, so that the rotor part 1b of the driving motor 1 can continuously perform rotary motion in a power-on state.

The outer roller body 2 positioned outside the driving motor 1 comprises cover plates 2a fixedly installed at two ends of the outer roller body, the cover plates are sleeved on the bearing part 3, a slewing bearing and a sealing ring are installed between the inner wall surface of the cover plates 2a and the outer wall surface of the bearing part 3, and the sealing ring is positioned outside the slewing bearing, so that the outer roller body 2 can perform rotary motion relative to the fixed bearing part 3 and the stator part 1 a.

The stator part 1a includes a main output end 101 extending to one side, a driving gear is mounted on the main output end 101, an inner driving gear ring 5a is formed in the outer roller body 2, and the driving gear and the inner driving gear ring 5a are connected through a power transmission mechanism including a multi-stage gear engagement set 5 b. Specifically, one gear engagement group 5b is defined as a primary gear engagement group 5b, which includes at least one primary ring gear fixedly connected to the driving motor 1 on one side or directly formed on the driving motor 1, a primary driving wheel engaged with the gear installed on the main output end 101 and the primary ring gear, and a frame device rotatably installed on the primary driving wheel. When the main output end 101 rotates, the gear installed on the main output end 101 becomes a sun gear to perform autorotation, the primary driving wheel becomes a planet wheel to perform revolution motion around the gear serving as the sun gear while performing autorotation motion, and the rack device also rotates around a fixed central axis. When the part of the frame device is bent and extended to make the part section and the main output end 101 be collinear, the power after the speed reduction and torque increase can be continuously output outwards with a fixed transmission ratio. When the secondary gear engagement set 5b is formed by continuing to refer to the structural installation of the aforementioned primary gear engagement set 5b on the rear end section of the frame device, the power output of the drive motor to the output end of the secondary gear engagement set is achieved by reducing the speed and increasing the torque. By analogy, this effect can be further amplified by the multi-stage arrangement.

At this time, when the rotor part 1b in the driving motor 1 is electrified to rotate, the main output end 101 of the driving motor can drive the outer roller body 2 to rotate through the multi-stage gear meshing group 5b and the inner driving gear ring 5a, and meanwhile, the working requirements of speed reduction and torque increase of the electric roller are met, and larger torque is output outwards.

Further, a cavity formed between the driving motor 1 and the outer roller body 2 is filled with a lubricating oil, wherein the height of the lubricating oil is about one fifth to one third of the height of the cavity, and the liquid level of the lubricating oil is located below the driving motor 1. Inside the outer drum body 2, an attaching portion 2b for driving the lubricant to rise to a high position and drop down along with the rotation of the outer drum body 2 is also formed. Specifically, the attachment portions 2b may be hollow areas formed by a plurality of baffles extending in an inward protruding manner at intervals, or may be grooves formed by directly opening concave grooves inward from the inner wall surface of the outer drum body 2, but one condition that needs to be satisfied is that the formed attachment portions 2b are uniformly distributed at intervals around the circumference of the outer drum body 2, and the openings of the formed cavities or grooves face one side in the direction in which the drum rotates. Taking the bottom area structure as an example, when the hollow area or the concave groove rotates from bottom to top along with the rotation of the outer roller body and sweeps the lubricating oil liquid at the bottom all the time, the hollow part of the outer roller body 2 has a certain containing effect on the oil liquid. Meanwhile, the lubricating oil liquid has certain viscosity, so that the outer roller body 2 can uniformly drive the lubricating oil liquid to lift and move to a high position through each cavity when rotating, and at the moment, part of the lubricating oil liquid still remained in each cavity can continuously drop downwards to the meshing gear teeth or bearings in the power transmission mechanism 5 in sequence.

The oil filling mode not only meets the local automatic lubrication effect on the power transmission mechanism when the electric roller works, is safe and reliable, but also avoids excessive load applied to the working process of the driving motor 1, reduces energy consumption, and simultaneously can continuously take out local heat in the power transmission mechanism 5 through the lubrication movement of oil and radiate heat outwards through a larger area of the outer roller body 2, thereby avoiding deformation damage caused by overhigh local temperature rise of parts.

It can be seen that the rotary bearing and the sealing ring are installed between the inner wall surface of the cover plate 2a and the outer wall surface of the bearing part 3, so that the structure is to prevent the external impurities from invading the inside of the outer roller body 2 to pollute the oil or aggravate the damage of the power transmission mechanism 5 during the operation of the inner driving type electric roller. However, in the actual working process, the internal temperature of the outer roller body 2 will rise, which inevitably leads to the rise of the pressure of the internal cavity, so that a small amount of leakage of oil outwards occurs at the connection gap, and dust impurities easily enter the internal cavity from the connection gap after the heat dissipation temperature is reduced. In view of this, on the basis of the above-mentioned swivel bearing and seal ring, a hollow groove capable of penetrating inside and outside is provided in the bearing part 3 at one end of the motorized pulley at one end, and a pressure compensation device 8 is installed at the opening communicating with the outside. Specifically, the pressure compensation device 8 mainly includes a pneumatic one-way valve device and a filtering port, and the one-way valve device can be opened when the internal pressure is smaller than the external pressure, so as to realize the internal and external pressure compensation effect. It is also noted that the pressure at which the non-return valve opens is less than the failure pressure of the sealing ring to ensure that the pressure compensating device 8 can start to operate before the reverse suction takes place at the location of the sealing ring.

In the working process of the motorized pulley, the real-time rotation speed of the outer pulley body 2 may be fluctuated due to the change of the externally applied load, and at this time, a corresponding mechanism should be designed to regulate the output working state of the driving motor 1, and meanwhile, the relative sealing of the inner and outer regions must be considered. In addition to the above, the support part 3 on the side not provided with the pressure compensation device 8 is preferably designed as a hollow structure, so that an internal connection chamber 3a is formed. At the same time, the other side of the rotor part 1b in the driving motor 1 extends outwards to form a convex auxiliary output end 102, and the auxiliary output end 102 can be connected with the multi-section transition connecting section 7 in a spline connection mode and is led outwards after penetrating through the bearing part 3 at the side. A control feedback unit 6 for adjusting the operation of the driving motor 1 is installed at the end of the connection section at the outermost side, specifically, the control feedback unit 6 includes a junction box 6a and an encoder 6b, the encoder 6b is connected with the secondary output end 102 through the aforementioned transition connection section 7 and can acquire the rotation parameter of the rotor portion 1b, and the junction box 6a is electrically connected with the encoder 6b and the driving motor 1 at the same time, so as to realize adjusting the real-time rotation state of the driving motor 1 according to the rotation parameter acquired by the encoder 6b, and more precisely control the rotation operation state of the outer drum body 2.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (9)

1. An internally driven motorized pulley, characterized in that: the motor comprises a driving motor (1) and an outer roller body (2), wherein the driving motor (1) comprises a stator part (1 a) and a rotor part (1 b), two ends of the stator part (1 a) are respectively connected with bearing parts (3) extending outwards, the bearing parts (3) at two ends are respectively fixedly arranged on supporting seats (4) at two ends, the rotor part (1 b) is arranged on the inner side of the stator part (1 a), and the rotor part (1 b) can rotate under the energizing state of the driving motor (1); the whole outer roller body (2) is in a hollow cylindrical shape, the outer roller body (2) is sleeved and arranged on the outer side of the driving motor (1), and sealing cover plates (2 a) used for separating an inner cavity from the outside are respectively arranged at two ends of the outer roller body; the stator part (1 a) comprises a main output end (101) extending to one side and protruding, and a power transmission mechanism (5) is further connected and installed between the main output end (101) and the outer roller body (2); and a cavity between the driving motor (1) and the outer roller body (2) is filled with lubricating oil.

2. The internally driven motorized pulley as set forth in claim 1, wherein: the sealing cover plate (2 a) is sleeved on the bearing part (3), a slewing bearing and a sealing ring are arranged between the inner wall surface of the sealing cover plate (2 a) and the outer wall surface of the bearing part (3), and the sealing ring is positioned on the outer side of the slewing bearing.

3. The internally driven motorized pulley according to claim 2, wherein: an attaching part (2 b) for driving the lubricating oil liquid to rise upwards along with the rotation of the outer roller body (2) is formed on the inner wall of the outer roller body (2) to the inner side.

4. An internally driven motorized pulley as set forth in claim 3, wherein: the liquid level of the lubricating oil liquid is positioned below the driving motor (1).

5. The internally driven motorized pulley as recited in claim 4, wherein: an inner driving gear ring (5 a) is formed in the outer roller body (2), the power transmission mechanism (5) comprises a gear engagement group (5 b) which is connected in sequence in multiple stages, the gear engagement group (5 b) at the front end of the power transmission mechanism (5) is engaged with the main output end (101), and the gear engagement group (5 b) at the rear end of the power transmission mechanism (5) is engaged with the inner driving gear ring (5 a).

6. The internally driven motorized pulley as set forth in claim 5, wherein: the stator part (1 a) also comprises a secondary output end (102) extending to the other side, and one side of the secondary output end (102) is provided with a control feedback unit (6) for adjusting the operation of the driving motor (1).

7. The internally driven motorized pulley as recited in claim 6, wherein: the control feedback unit (6) comprises a junction box (6 a) and an encoder (6 b), the encoder (6 b) is connected with the auxiliary output end (102) and can acquire the rotation parameters of the rotor part (1 b), and the junction box (6 a) is electrically connected with the encoder (6 b) and the driving motor (1) at the same time so as to realize the adjustment of the real-time rotation state of the driving motor (1) according to the rotation parameters acquired by the encoder (6 b).

8. The internally driven motorized pulley as recited in claim 7, wherein: the encoder (6 b) is connected with the auxiliary output end (102) through a plurality of transition connecting sections (7), a connecting cavity (3 a) is formed in the bearing part (3), and each transition connecting section (7) is located in the connecting cavity (3 a).

9. The internally driven motorized pulley as recited in claim 8, wherein: a pressure compensation device (8) is arranged at one end of the bearing part (3).