Motor assembling device

Abstract

The utility model discloses a motor assembling device which comprises a base. The top ends of the two stand columns are fixedly connected to the lower end of the top beam. A supporting seat is fixedly arranged on the upper surface of the base; the rotor rear cover assembly is located on the supporting seat; the left end and the right end of a movable beam are slidably arranged on the stand columns in a sleeving mode respectively, and the rear end of the movable beam is in threaded connection with a screw rod. The lower end of the screw rod is rotatably connected to the base; the stator shell assembly is connected to the front end of the movable beam; a liquid nitrogen nozzle is arranged on the upper surface of the movable beam; the middle of the top beam is fixedly connected with an oil cylinder, the lower end of a telescopic rod of the oil cylinder is fixedly connected with a sleeve, and a magnetic attraction component is arranged on the lower end face of the sleeve and used for being connected with a front end cover of the motor in a magnetic attraction mode. According to the utility model, the assembling of the rotor rear cover assembly and the stator casing assembly is automatically completed according to the requirement of motor final assembly, the press fitting of the bearing is automatically completed, the manpower is saved, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor production, and in particular relates to a motor assembling device. Background Art

[0002] The motor rotor is connected to a bearing at each end, and the outer rings of the two bearings are respectively embedded in the middle of the front and rear end covers. The problem is that during assembly, the bearing at one end of the rotor has been connected to the end cover to form a rotor back cover assembly, and the stator has been embedded in the motor housing to form a stator housing assembly. Both the rotor back cover assembly and the stator housing assembly are quite heavy, and it is very laborious to manually carry and align them coaxially. In addition, the last bearing, that is, the bearing connecting the front end cover and the rotor, needs to be press-fitted during assembly. Press-fitting by manpower is time-consuming and labor-intensive, and the assembly quality is difficult to guarantee. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology, the utility model provides a motor assembly device, the purpose of which is to design a device according to the needs of motor assembly, automatically complete the combination of the rotor rear cover assembly and the stator housing assembly, save manpower, facilitate the press-fitting of the last bearing, and improve assembly efficiency.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A motor assembly device comprises a base; a pair of columns are fixedly arranged on the upper surface of the base, and the top ends of the two columns are fixedly connected to the lower end of the top beam; a support seat is fixedly arranged on the upper surface of the base; a rotor back cover assembly formed by assembling the rotor and the rear end cover of the motor is seated on the support seat; the left and right ends of the movable beam are respectively slidably sleeved on the columns, and the rear end of the movable beam is threadedly connected to a screw; the lower end of the screw is rotatably connected to the base, and the lower part of the screw is connected to a driving mechanism, which is used to drive the movable beam to move up and down by driving the screw to rotate; a stator housing assembly formed by assembling the stator and the housing of the motor is connected to the front end of the movable beam, which is used to sleeve the stator housing assembly onto the rotor back cover assembly when the movable beam moves downward; a liquid nitrogen nozzle is arranged on the upper surface of the movable beam, which is used to spray liquid nitrogen to the bearing at the upper end of the rotor back cover assembly to cool it; the middle part of the top beam is fixedly connected to an oil cylinder, and the lower end of the telescopic rod of the oil cylinder is fixedly connected to a sleeve, and the lower end surface of the sleeve is provided with a magnetic attraction component, which is used to magnetically connect the front end cover of the motor.

[0006] As a further optimization, the driving mechanism includes a worm wheel fixedly connected to the lower part of the screw; the worm wheel is meshingly connected to the worm, and one end of the worm is connected to a servo motor fixed on the base, so as to drive the screw to rotate through the servo motor.

[0007] As a further optimization, the middle part of the movable beam is set as a U-shaped channel steel; the front end of the channel steel has multiple latch shafts; the mounting holes on the casing are mounted on the latch shafts, and are used for the stator casing assembly to be hung on the front end of the movable beam; the middle fixed screw hole seat of the channel steel is used for threaded connection of the screw rod.

[0008] As a further optimization, there are two liquid nitrogen nozzles, which are symmetrically distributed left and right based on the central plane of the stator housing assembly.

[0009] As a further optimization, the support seat is cylindrical, and its upper end is supported on the lower end surface of the connecting flange of the rear end cover.

[0010] As a further optimization, the side wall of the support seat is provided with a plurality of notches, and each of the notches corresponds to the position of the connecting hole on the connecting flange.

[0011] As a further optimization, the sleeve is provided with a notch at the position of the connecting hole on the front end cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) Liquid nitrogen can be accurately sprayed onto the bearing through a liquid nitrogen nozzle that can move with the housing, and the bearing can be pressed after cooling, which is labor-saving and convenient, provides a guarantee for automatically completing the pressing of the bearing, and the quality of the bearing pressing is good.

[0014] (2) Except for the initial placement work, the rest of the pressing work is completed by machinery, which reduces the work of handling, coaxial alignment, etc., saving labor and convenience.

[0015] (3) The movement of the movable beam itself only needs to overcome gravity, the load is small, the screw drives the movable beam, the movement is flexible, and the position is accurate; while the front end cover needs to overcome the matching resistance with the bearing, and is driven by the cylinder, with sufficient power and reliable press installation.

[0016] (4) The rotor rear cover assembly, stator housing assembly and front cover are not connected to the frame structure with bolts, which facilitates initial placement, automatically aligns the axis and is easy to operate.

[0017] In summary, this embodiment automatically completes the assembly of the rotor rear cover assembly and the stator housing assembly and automatically completes the press-fitting of the bearings in response to the needs of motor assembly, thereby saving manpower and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the initial state of an embodiment of the utility model;

[0019] Figure 2 It is a side structural schematic diagram of the initial state of an embodiment of the utility model;

[0020] Figure 3 It is a front view structural schematic diagram of the movable beam of an embodiment of the utility model after it falls down;

[0021] Figure 4 It is a front view structural schematic diagram of the sleeve of an embodiment of the utility model after it falls down.

[0022] The correspondence between the technical features and the reference numerals in the figure is: base 1; column 11; top beam 12; support seat 13; notch 14; rotor rear cover assembly 2; bearing 21; connecting hole 22; stator housing assembly 3; front end cover 4; movable beam 5; liquid nitrogen nozzle 51; channel steel 52; pin shaft 53; screw hole seat 54; screw 6; worm gear 61; worm 62; servo motor 63; cylinder 7; sleeve 71. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the preferred embodiments of the present invention, rather than all the embodiments. It should be understood by those skilled in the art that these implementation methods are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1-4 ;

[0025] The utility model provides the following technical solutions: a motor assembly device; a pair of columns 11 are fixedly arranged on the upper surface of the base 1, and the top ends of the two columns 11 are fixedly connected to the lower end of the top beam 12; a support seat 13 is fixedly arranged on the upper surface of the base 1; a rotor rear cover assembly 2 formed by assembling the rotor and the rear end cover of the motor is seated on the support seat 13; the left and right ends of the movable beam 5 are respectively slidably mounted on the columns 11, and the rear end of the movable beam 5 is threadedly connected to the screw 6; the lower end of the screw 6 is rotatably connected to the base 1, and the lower part thereof is connected to a driving mechanism for driving the screw 6 The movable beam 5 is driven to move up and down by rotation; the stator housing assembly 3 formed by assembling the stator and housing of the motor is connected to the front end of the movable beam 5, and is used to fit the stator housing assembly 3 onto the rotor rear cover assembly 2 when the movable beam 5 moves downward; a liquid nitrogen nozzle 51 is provided on the upper surface of the movable beam 5, which is used to spray liquid nitrogen to the bearing 21 at the upper end of the rotor rear cover assembly 2 to cool it; the middle part of the top beam 12 is fixedly connected to the oil cylinder 7, and the lower end of the telescopic rod of the oil cylinder 7 is fixedly connected to the sleeve 71, and the lower end surface of the sleeve 71 is provided with a magnetic attraction component, which is used to magnetically connect the front end cover 4 of the motor.

[0026] The working principle includes that the base 1, the column 11, and the top beam 12 form a frame structure, which provides a support foundation for the remaining components and becomes the basis for the coaxial arrangement of the front cover 4, the stator housing assembly 3 and the rotor rear cover assembly 2, so as to facilitate vertical assembly. It can be seen that the column 11 is not only a supporting structure, but also has a guiding function, which is a dual purpose, making the frame structure light and simple and easy to make. It can be seen that the rotor rear cover assembly 2 is supported by the support seat 13 and can be picked up from the support seat 13. In other words, the rotor rear cover assembly 2 can be easily accessed from the support seat 13. It can be seen that the stator housing assembly 3 is coaxially arranged with the rotor rear cover assembly 2, and the movable beam 5 drives the stator housing assembly 3 to move, avoiding manual handling and saving manpower. In order to facilitate the press-fitting of the bearing 21, an interface is provided at the tail end of the liquid nitrogen nozzle 51 to facilitate the connection of the hose, and the bearing 21 is cooled by spraying liquid nitrogen to facilitate the press-fitting of the front cover 4. It can be seen that the front end cover 4 is coaxially arranged with the stator housing assembly 3, and the oil cylinder 7 becomes a driving mechanism to drive the front end cover 4 to move downward. The front end cover 4 is pressed downward by the oil cylinder 7 to complete the assembly of the entire motor.

[0027] An exemplary implementation of the driving mechanism is to install a gear on the screw 6, and the rack meshes with the gear to drive the screw 6 to rotate. In this embodiment, the driving mechanism preferably includes a worm wheel 61 fixedly connected to the lower end of the screw 6; the worm wheel 61 meshes with the worm 62, and one end of the worm 62 is connected to a servo motor 63 fixed on the base 1, which is used to drive the screw 6 to rotate through the servo motor 63. It can be seen that the servo motor 63 drive and the worm wheel 61 and worm 62 transmission can have a self-locking function, which is convenient for controlling the position of the movable beam 5.

[0028] In order to facilitate the connection of the stator housing assembly 3 to the movable beam 5, an exemplary connection method is that the middle part of the movable beam 5 is set as a U-shaped channel steel 52; the front end of the channel steel 52 has multiple latch shafts 53; the mounting holes on the housing are sleeved on the latch shafts 53, which are used for the stator housing assembly 3 to be hung on the front end of the movable beam 5; the middle of the channel steel 52 is fixed with a screw hole seat 54, which is used to thread the screw rod 6. It can be seen that the mounting hole housing has a hole on the base, which is connected by hanging, which is convenient for the storage and access of the stator housing assembly 3.

[0029] In order to better cool the bearing 21, there are two liquid nitrogen nozzles 51, which are symmetrically distributed on the left and right sides with the center plane of the stator housing assembly 3 as a reference, so that the liquid nitrogen is sprayed evenly and the cooling is faster.

[0030] In order to adapt to the thickness of the rear end cover, illustratively, the support seat 13 is cylindrical, and its upper end is supported on the lower end surface of the connecting flange of the rear end cover.

[0031] In order to facilitate the bolts connected to the rear cover after assembly, the side wall of the support seat 13 is provided with a plurality of notches 14, each of which corresponds to the position of the connection hole 22 on the connection flange. The bolts can be conveniently screwed through the notches 14. Similarly, the sleeve 71 is provided with notches 14 corresponding to the position of the connection hole 22 on the front cover 4.

[0032] When in use, in the initial state, the movable beam 5 moves to the middle position between the sleeve 71 and the support seat 13. First, the stator housing assembly 3 is installed on the movable beam 5, the rotor rear cover assembly 2 is placed on the support seat 13, and the front cover 4 is adsorbed on the sleeve 71; the initial placement work is completed. Then, by driving the movable beam 5 downward, the stator housing assembly 3 is fitted onto the rotor rear cover assembly 2 until the lower end of the housing supports the upper end surface of the rear cover connecting flange to complete the assembly of the stator and rotor. After that, since the liquid nitrogen nozzle 51 is installed on the movable beam 5, it can move with the stator housing assembly 3, and the height distance between the upper end of the assembled housing and the bearing 21 is fixed, so the height of the liquid nitrogen nozzle 51 can be preset. When the stator housing assembly 3 is in place, the liquid nitrogen nozzle 51 is also in place. At this time, liquid nitrogen is sprayed to the bearing 21 at the upper end of the rotor rear cover assembly 2 through the liquid nitrogen nozzle 51, and the radial size of the bearing 21 is reduced due to thermal expansion and contraction, which is convenient for the press-fitting of the front cover 4. After the spraying is completed, it stops. Then, the oil cylinder 7 is started to drive the front cover 4 to move downward until the lower end surface of the front cover 4 abuts against the upper end of the casing, and the press-fitting of the bearing 21 is completed at this time. Afterwards, the bolt assembly is inserted through the notch 14 into the connection hole 22 between the casing and the front and rear covers to complete the assembly. Finally, the movable beam 5 moves upward, driving the assembled motor to move upward, and then the motor is removed from the movable beam 5 and transferred.

[0033] The advantages of this embodiment are as follows:

[0034] (1) Liquid nitrogen can be accurately sprayed onto the bearing 21 through the liquid nitrogen nozzle 51 that can move with the housing, and the bearing 21 can be pressed after cooling, which is labor-saving and convenient, and provides a guarantee for automatically completing the press-fitting of the bearing 21, and the press-fitting quality of the bearing 21 is good.

[0035] (2) Except for the initial placement work, the rest of the pressing work is completed by machinery, which reduces the work of handling, coaxial alignment, etc., saving labor and convenience.

[0036] (3) The movement of the movable beam 5 itself only needs to overcome gravity, and the load is small. The screw 6 drives the movable beam 5, which is flexible and accurate in position. The front end cover 4 needs to overcome the matching resistance with the bearing 21 and is driven by the cylinder 7. The power is sufficient and the press-fitting is reliable.

[0037] (4) The rotor rear cover assembly 2, the stator housing assembly 3 and the front cover 4 are all connected to the frame structure without bolts, which facilitates the initial placement work, automatically aligns the axis, and is simple to operate.

[0038] In summary, this embodiment automatically completes the combination of the rotor rear cover assembly 2 and the stator housing assembly 3 and automatically completes the press-fitting of the bearing 21 in response to the needs of motor assembly, thereby saving manpower and improving assembly efficiency.

[0039] The parts not described in detail in this utility model are prior art; for ordinary technicians in this field, the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The scope of this utility model is defined by the attached claims and their equivalents.

Claims

1. A motor assembly device, comprising a base (1); a pair of columns (11) are fixedly arranged on the upper surface of the base (1), and the top ends of the two columns (11) are fixedly connected to the lower end of the top beam (12); characterized in that: A support seat (13) is fixedly arranged on the upper surface of the base (1); a rotor rear cover assembly (2) formed by assembling the rotor and rear cover of the motor is seated on the support seat (13); The left and right ends of the movable beam (5) are respectively slidably mounted on the upright column (11); the rear end of the movable beam (5) is threadedly connected to a screw rod (6); the lower end of the screw rod (6) is rotatably connected to the base (1); the lower part of the screw rod (6) is connected to a driving mechanism for driving the movable beam (5) to move up and down by driving the screw rod (6) to rotate; A stator housing assembly (3) formed by assembling the stator and housing of the motor is connected to the front end of the movable beam (5) and is used to fit the stator housing assembly (3) onto the rotor rear cover assembly (2) when the movable beam (5) moves downward; The upper surface of the movable beam (5) is provided with a liquid nitrogen nozzle (51) for spraying liquid nitrogen onto the bearing (21) at the upper end of the rotor rear cover assembly (2) to cool it; The middle part of the top beam (12) is fixedly connected to the oil cylinder (7), the lower end of the telescopic rod of the oil cylinder (7) is fixedly connected to the sleeve (71), and the lower end surface of the sleeve (71) is provided with a magnetic attraction component for magnetically connecting to the front end cover (4) of the motor.

2. The motor assembly device according to claim 1, characterized in that: The driving mechanism comprises a worm wheel (61) fixedly connected to the lower part of the screw rod (6); the worm wheel (61) is meshingly connected to a worm rod (62); one end of the worm rod (62) is connected to a servo motor (63) fixedly arranged on the base (1), and is used to drive the screw rod (6) to rotate through the servo motor (63).

3. The motor assembly device according to claim 1, characterized in that: The middle part of the movable beam (5) is provided with a U-shaped channel steel (52); a plurality of latch shafts (53) are fixedly provided at the front end of the channel steel (52); the mounting holes on the casing are sleeved on the latch shafts (53) so as to be used for the stator casing assembly (3) to be hung on the front end of the movable beam (5); The middle fixed screw hole seat (54) of the channel steel (52) is used for threaded connection with the screw rod (6).

4. The motor assembly device according to claim 1, characterized in that: There are two liquid nitrogen nozzles (51), which are symmetrically distributed left and right with the center plane of the stator housing assembly (3) as a reference.

5. The motor assembly device according to claim 1, characterized in that: The support seat (13) is cylindrical, and its upper end is supported on the lower end surface of the connecting flange of the rear end cover.

6. The motor assembly device according to claim 5, characterized in that: The side wall of the support seat (13) is provided with a plurality of notches (14), and each of the notches (14) corresponds to the position of a connection hole (22) on the connection flange.

7. The motor assembly device according to claim 6, characterized in that: The sleeve (71) is provided with a notch at a position corresponding to the connection hole on the front end cover (4).

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