CN210327336U

CN210327336U - Casing assembly guiding mechanism of direct-drive motor

Info

Publication number: CN210327336U
Application number: CN201921558925.2U
Authority: CN
Inventors: 林果; 吴喜桥; 王立
Original assignee: Henan Normal University
Current assignee: Henan Normal University
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-04-14
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a casing assembly guiding mechanism of direct drive motor, the on-line screen storage device comprises a base, guide arm and guide ring, the guide arm is connected to the upper end of base, the upper end center of base is fixed with the stator, the guide ring includes the mount table, the lower extreme face of mount table forms the boss under the mount table, circumference establishes the boss perforation down on the boss under the mount table, the fenestrate inner butt ball of lower boss, the fenestrate outer end spiro union screw thread post of lower boss, ball and screw thread post pass through the spring butt, the ball exposes the outer wall of lower boss perforation and butt stator, the upper end installation casing of mount table, the casing includes the second casing, the casing is impressed so that the annular outer wall of the inner wall interference fit stator of second casing impresses downwards. The utility model discloses make concentric positioning accuracy reliable between casing and the stator, convenient operation effectively improves work efficiency, and the pressure equipment process is smooth and easy.

Description

Casing assembly guiding mechanism of direct-drive motor

Technical Field

The utility model relates to a motor spare part assembly fixture field, more specifically the casing assembly guiding mechanism who directly drives motor that says so relates to.

Background

The direct-drive motor is characterized by low rotating speed and high output torque, also called as torque servo, and different from the traditional motor, the direct-drive motor can be directly connected with a load, so that a speed reduction transmission mechanism such as a speed reducer, a gear box and the like is omitted, the structure is simple, the assembly is convenient, and the maintenance is free, so that the direct-drive motor is widely applied in some industries.

Directly drive the motor and mainly by the casing, the stator, the rotor, each part such as end cover is constituteed, the stator passes through interference fit and installs to the casing in, because the output torque who directly drives the motor is high, often the interference volume is got the great value in order to guarantee the firm of stator, just need accomplish through the heat jacket during casing and stator assembly like this, in the prior art, place the stator on the press fixed usually, then put into the casing oven heating to the uniform temperature (this temperature calculates according to the design value of interference volume), the workman takes thermal-insulated gloves to take out the casing rapidly and place it on the stator and aim at rightly, the press is pressed down the casing at last and is accomplished, there is following problem at this in-process: the casing and the stator are aligned and righted manually, workers feel the casing and no tool is guaranteed, the casing and the stator cannot be aligned and righted at each time, if the casing and the stator are not aligned and righted, the casing and the stator are deformed due to hard pressing of a press machine, even the casing and the stator cannot be pressed to half, great inconvenience and loss are caused, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a casing assembly guiding mechanism who directly drives motor for concentric positioning accuracy is reliable between casing and the stator, and convenient operation effectively improves work efficiency, and the pressure equipment process is smooth and easy.

The utility model provides a scheme of above-mentioned technical problem is:

a guide mechanism for assembling a machine shell of a direct drive motor comprises a base, a guide rod and a guide ring, wherein the guide rod is symmetrically connected to the upper end of the base, a stator is fixedly arranged at the center of the upper end of the base, the guide ring comprises an annular mounting table, support lugs are symmetrically arranged on the outer edge of the mounting table and provided with support lug through holes which penetrate through the upper portion and the lower portion, sliding bearings are arranged in the support lug through holes in an interference fit mode, the guide rod penetrates through the support lug through holes, the guide rod is in clearance fit with the sliding bearings, the lower end face of the mounting table extends downwards to form a mounting table lower convex body, lower convex body through holes which penetrate through the inner wall and the outer wall of the mounting table lower convex body are circumferentially arranged on the mounting table lower convex body, balls are abutted to the inner ends of the lower convex body through holes, threaded columns are screwed to the outer ends of the lower convex body through, the casing is installed to the up end of mount table, the casing includes the second casing that matches with the annular outer wall of stator, and the casing is impressed downwards and is driven the guide ring and move down along the guide arm together so that the annular outer wall of stator is impressed in the inner wall interference fit of second casing.

The stator comprises a cylindrical stator core and a stator winding embedded in a stator groove formed in the inner edge of the stator core, the upper end and the lower end of the stator winding exceed the stator core, the annular outer wall of the stator core and the inner wall of the guide ring are arranged concentrically, and the diameter of the inner wall of the guide ring is larger than that of the annular outer wall of the stator core.

The lower convex body through hole comprises an inner hole and an outer hole which are communicated, a contraction ring with a reduced diameter is formed at the inner end of the inner hole, the diameter of the ball is equal to that of the inner hole, the ball abuts against the contraction ring and is limited by the contraction ring and cannot be separated from the inner end, and the threaded column is screwed into the outer end of the outer hole.

The outer end laminating of ball is equipped with interior head that supports, the laminating of the inner of screw thread post is equipped with outer head that supports, interior head and outer support through the spring butt between the head.

The upper end face of the mounting table is provided with a heat insulation ring in a fitting manner, and the heat insulation ring is provided with a machine shell in a fitting and abutting manner.

The casing is still including being located the first casing of second casing lower extreme and being located the third casing of second casing upper end, the internal diameter that first casing, second casing and third casing are integrated into one piece and first casing, second casing and third casing reduces in proper order, the inner edge of heat insulating ring is equipped with the heat insulating ring flange that upwards extends, the annular outer wall of the heat insulating ring flange of the annular inner wall laminating of first casing.

The utility model discloses an outstanding effect is: through the setting of guide ring, heat insulating ring for concentric positioning accuracy is reliable between casing and the stator, and convenient operation effectively improves work efficiency, and the temperature of casing can not reduce fast moreover, makes the pressure equipment work laborsaving convenient, through the tangent contact of ball between guide ring and the stator simultaneously, and frictional force is little, and the resistance can not be very big during the pressure equipment, and the pressure equipment process is smooth and easy.

Drawings

Fig. 1 is a schematic structural view of the housing of the present invention before assembly;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic structural view of the assembled case of the present invention;

fig. 4 is a perspective view of the guide ring of the present invention;

fig. 5 is a perspective view of the stator of the present invention.

In the figure: the stator comprises a base 1, a base screw hole 11, a base mounting counter bore 12, a base convex column 13, a guide rod 2, a positioning flange 21, a stator 3, a stator winding 31, a stator iron core 32, a support ring 4, a shield 41, a shield mounting seat 42, a machine shell 5, a first shell 51, a second shell 52, a third shell 53, a guide ring 6, a mounting table 61, a mounting table convex ring 62, a support lug 63, a support lug through hole 64, a sliding bearing 65, a mounting table convex body 66, a lower lug penetrating hole 67, an inner hole 68, an outer hole 69, a contraction ring 610, a threaded column 7, a threaded column inner hexagonal head 71, a ball 72, an inner abutting head 73, an outer abutting head 74, a spring 75, a heat insulation ring 8 and a heat insulation ring flange 81.

Detailed Description

Example (b):

as shown in fig. 1-5, a casing assembly guide mechanism for a direct drive motor comprises a base 1, a guide rod 2 and a guide ring 6, wherein the upper end of the base 1 is symmetrically connected with the guide rod 2, the base 1 is provided with a base screw hole 11, the bottom end of the guide rod 2 is a threaded section, the bottom end of the guide rod 2 is screwed into the base screw hole 11, the lower part of the guide rod 2 is provided with a positioning flange 21 with an increased outer diameter, and the guide rod 2 is screwed downwards until the positioning flange 21 abuts against the upper end face of the base 1. Base installation counter bores 12 are evenly distributed on the base 1 in the peripheral circumferential direction of the base screw hole 11, and screws are screwed into the base installation counter bores 12 to achieve installation and fixation of the base 1.

The stator 3 is fixedly arranged at the center of the upper end of the base 1, the base convex column 13 extending upwards is arranged at the center of the upper end face of the base 1, the support ring 4 is installed on the upper end face of the base 1, the upper end face of the base 1 is provided with an annular groove, the support ring 4 is inserted into the annular groove in a clearance fit manner, the support ring 4 is positioned between the base convex column 13 and the guide rod 2, the height of the support ring 4 is lower than that of the base convex column 13, the stator 3 is attached to the outer wall of the base convex column 13, the stator 3 comprises a cylindrical stator core 32 and a stator winding 31 embedded in a stator groove arranged on the inner edge of the stator core 32, the stator winding 31 is separated from the stator core 32 through insulation, the upper end and the lower end of the stator winding 31 exceed the stator core 32, the stator core 32 and the stator winding 31 are conventional technologies of the stator 3, detailed description is omitted, the inner wall of the stator core 32 is, the lower end surface of the stator core 32 abuts against the upper end surface of the support ring 4 (the lower end surface of the stator core 32 here refers to the lower end surface thereof located at the periphery of the stator winding 31).

The guide ring 6 includes annular mount table 61, the outer fringe symmetry of mount table 61 is equipped with journal stirrup 63, journal stirrup 63 is equipped with journal stirrup through-hole 64 that runs through from top to bottom, interference fit is equipped with slide bearing 65 in the journal stirrup through-hole 64, guide rod 2 passes journal stirrup through-hole 64 and guide rod 2 and slide bearing 65 clearance fit.

The lower end surface of the mounting table 61 extends downwards to form a mounting table lower convex body 66, and a lower convex body through hole 67 penetrating through the inner wall and the outer wall of the mounting table lower convex body 66 is formed in the circumferential direction of the mounting table lower convex body, namely, the lower convex body through hole 67 is distributed horizontally and radially. The lower protrusion penetration hole 67 includes an inner hole 68 and an outer hole 69 communicating with each other, and the diameter of the outer hole 69 is larger than that of the inner hole 68.

The inner butt of protruding body perforation 67 down has ball 72, and the outer end spiro union of protruding body perforation 67 down has screw thread post 7, through spring 75 butt between ball 72 and the screw thread post 7, ball 72 inner exposes protruding body perforation 67 down and the annular outer wall of butt stator 3 (actually the annular outer wall of butt stator core 32), the annular outer wall of stator core 32 sets up with the inner wall of guide ring 6 is concentric and the inner wall diameter of guide ring 6 is greater than the annular outer wall diameter of stator core 32.

The inner end of the inner bore 68 forms a reduced diameter constricting ring 610, the diameter of the balls 72 is the same as the diameter of the inner bore 68, the balls 72 abut the constricting ring 610 and the balls 72 are constrained by the constricting ring 610 so as not to escape from the inner end, but the balls 72 may partially expose the constricting ring 610, and the threaded post 7 is threaded into the outer end of the outer bore 69. The threaded column 7 is provided with a threaded column hexagon socket 71 at the center of the outer end face of the threaded column 7, so that the threaded column 7 can be screwed by a tool, threads with the same length are tapped in each outer hole 69, and therefore the screwing lengths of all the threaded columns 7 are ensured to be the same, namely, finally, the abutting force of each ball 72 by a spring 75 is the same, and friction force with the same size can be generated at each point of the outer wall of the stator core 32.

The guide ring 6 can slide up and down along the guide rod 2, and in a normal state, the balls 72 abut against the outer wall of the stator core 32 under the action force of the spring 75, and friction force exists between the balls 72 and the outer wall of the stator core 32, so that the guide ring 6 cannot slide down, and the number of the balls 72 can be increased according to the friction force required.

Casing 5 is installed to the up end of mount table 61, the up end laminating of mount table 61 is equipped with heat insulating ring 8, laminating is supported to press on the heat insulating ring 8 has casing 5, and the up end outer fringe of mount table 61 is equipped with the mount table bulge loop 62 of upwards extending, the inner edge of the outer fringe laminating mount table bulge loop 62 of heat insulating ring 8. The heat insulation ring 8 can prevent heat of the casing 5 from being transferred downwards, the temperature of the casing 5 is prevented from being rapidly reduced, and the heat insulation ring 8 can be made of polyether ether ketone (PEEK) materials, is high in temperature resistance, easy to process, high in mechanical strength and poor in heat conductivity.

The casing 5 includes the second casing 52 that matches with the annular outer wall of stator core 32, the casing 5 still includes the first casing 51 that is located second casing 52 lower extreme and the third casing 53 that is located second casing 52 upper end, first casing 51, second casing 52 and third casing 53 reduce for an organic whole and first casing 51, second casing 52 and third casing 53's internal diameter in proper order, the inner edge of heat insulating ring 8 is equipped with the heat insulating ring flange 81 that upwards extends, the annular outer wall of heat insulating ring flange 81 is laminated to the annular inner wall of first casing 51, can ensure the accurate location of casing 5 and put into like this.

The housing 5 is pressed downward to move the guide ring 6 downward along the guide bar 2 so that the inner wall of the second housing 52 is press-fitted into the annular outer wall of the stator 3. By pressing the upper end of the housing 5 by the press and applying a downward force, the housing 5 together with the guide ring 6 and the balls 72 is moved downward, wherein the balls 72 are pressed all the way against the outer wall of the stator core 32 and moved downward, the frictional force generated by the balls 72 is not important when the second housing 52 is partially press-fitted into the stator core 32, and finally the upper end of the stator core 32 is pressed against the step surface at the boundary between the second housing 52 and the third housing 53, and when the balls 72 are not pressed against the outer wall of the stator core 32, the entire guide ring 6 is lowered until the lugs 63 abut against the upper end surface of the positioning flanges 21 due to the loss of the frictional force generated by the balls 72, and the assembled housing 5 and the stator 3 are separated from the guide ring 6.

The outer end laminating of ball 72 is equipped with interior head 73 that supports, the inner laminating of screw thread post 7 is equipped with outer head 74 that supports, interior head 73 that supports with support through spring 75 butt between the head 74 outward. The inner abutment 73 and the outer abutment 74 each have a stepped portion on a surface adjacent to each other, and both ends of the spring 75 abut against the stepped portions. The inner end face of the inner abutting head 73 is a spherical surface matched with the ball 72, the outer end face of the outer abutting head 74 is a plane attached to the threaded column 7, the inner abutting head 73 and the outer abutting head 74 are made of polytetrafluoroethylene materials, the friction coefficient is extremely low, and when the ball 72 rolls and the threaded column 7 is screwed, the inner abutting head 73 and the outer abutting head 74 cannot rotate to cause torsion of the spring 75.

The upper end of the base convex column 13 is fixedly connected with a protective cover 41, the protective cover 41 is annular, the protective cover 41 covers the stator winding 31 at the upper end, the lower end face of the outer edge of the protective cover 41 is attached to the upper end face of the stator core 32 (the upper end face of the stator core 32 at the position is the upper end face of the stator winding 31 at the periphery), and therefore the stator winding 31 can be prevented from being interfered by external factors (such as impurity particles and the like falling on the stator winding 31).

The inner edge of the shield 41 is integrally formed with horizontally distributed shield mounting seats 42, and the shield mounting seats 42 are attached to the upper end surface of the base convex column 13. Wherein the lower outer edge of the shield mounting seat 42 abuts the upper inner edge of the stator core 32.

The above embodiments are only used for illustrating the present invention, and are not intended to limit the present invention, and those skilled in the relevant art can make various changes without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention.

Claims

1. The utility model provides a casing assembly guiding mechanism of direct drive motor which characterized in that: including base (1), guide arm (2) and guide ring (6), the upper end symmetric connection of base (1) has guide arm (2), the fixed stator (3) that is equipped with in upper end center of base (1), guide ring (6) include annular mount table (61), the outer fringe symmetry of mount table (61) is equipped with journal stirrup (63), journal stirrup through-hole (64) that run through from top to bottom are equipped with in journal stirrup through-hole (64), interference fit is equipped with slide bearing (65) in the journal stirrup through-hole (64), guide arm (2) pass journal stirrup through-hole (64) and guide arm (2) and slide bearing (65) clearance fit, the lower extreme face downwardly extending of mount table (61) forms boss (66) under the mount table, circumference is equipped with the boss perforation (67) that runs through its inner wall down on boss (66), the inner butt joint of boss perforation (67) has ball (72) down, the outer end spiro union of protruding body perforation (67) has screw thread post (7) down, through spring (75) butt between ball (72) and screw thread post (7), ball (72) inner exposes protruding body perforation (67) and the annular outer wall of butt stator (3) down, casing (5) are installed to the up end of mount table (61), casing (5) include second casing (52) that match with the annular outer wall of stator (3), and casing (5) are impressed downwards and are driven guide ring (6) and move downwards along guide arm (2) together so that the annular outer wall of the inner wall interference fit impressed stator (3) of second casing (52).

2. The casing assembling guide mechanism of the direct drive motor as claimed in claim 1, wherein: the stator (3) comprises a cylindrical stator core (32) and a stator winding (31) embedded in a stator groove formed in the inner edge of the stator core (32), the upper end and the lower end of the stator winding (31) both exceed the stator core (32), the annular outer wall of the stator core (32) and the inner wall of the guide ring (6) are concentrically arranged, and the diameter of the inner wall of the guide ring (6) is larger than that of the annular outer wall of the stator core (32).

3. The casing assembling guide mechanism of the direct drive motor as claimed in claim 1, wherein: the lower convex body through hole (67) comprises an inner hole (68) and an outer hole (69) which are communicated, the inner end of the inner hole (68) forms a contraction ring (610) with the diameter being reduced, the diameter of the ball (72) is equal to that of the inner hole (68), the ball (72) abuts against the contraction ring (610) and is limited by the contraction ring (610) and cannot be disengaged from the inner end, and the threaded column (7) is screwed into the outer end of the outer hole (69).

4. The casing assembling guide mechanism of the direct drive motor as claimed in claim 3, wherein: the outer end laminating of ball (72) is equipped with interior head (73) that supports, the inner laminating of screw thread post (7) is equipped with outer head (74) that supports, interior head (73) and outer support through spring (75) butt between the head (74).

5. The casing assembling guide mechanism of the direct drive motor as claimed in claim 1, wherein: the upper end face of mount table (61) laminating is equipped with heat insulating ring (8), laminating is supported and is pressed casing (5) on heat insulating ring (8).

6. The casing assembling guide mechanism of the direct drive motor as claimed in claim 5, wherein: casing (5) still include first casing (51) that is located second casing (52) lower extreme and third casing (53) that is located second casing (52) upper end, first casing (51), second casing (52) and third casing (53) are integrated into one piece and the internal diameter of first casing (51), second casing (52) and third casing (53) reduces in proper order, the inner edge of heat insulating ring (8) is equipped with the heat insulating ring flange (81) of upwards extending, the annular outer wall of heat insulating ring flange (81) is laminated to the annular inner wall of first casing (51).