CA1060934A - Attachment of side covers to linear induction motor - Google Patents
Attachment of side covers to linear induction motorInfo
- Publication number
- CA1060934A CA1060934A CA254,743A CA254743A CA1060934A CA 1060934 A CA1060934 A CA 1060934A CA 254743 A CA254743 A CA 254743A CA 1060934 A CA1060934 A CA 1060934A
- Authority
- CA
- Canada
- Prior art keywords
- main body
- coil
- core
- mounting brackets
- head portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Linear Motors (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Considerable difficulty has been encountered in attempting to mount side covers on linear induction motors in a manner such that they are maintained in a plane above the plane of the lower faces of the wedge members of the core. The present invention provides the improvement wherein a plurality of cover mounting brackets are located at longitudinally spaced intervals along the length of the core, each cover mounting bracket comprising a main body portion and a head portion, the head portion projecting laterally from the main body portion, the other end of the main body portion being supported by a wedge member with the head portion thereof disposed above the lower face of the wedge member and spaced below the lower face of its associated coil. The inner edges of the side covers being down-wardly curved and notched at longitudinally spaced intervals corresponding to the longitudinal spacing of the mounting brackets so as to extend inwardly and downwardly over the laterally ex-tending head portions of the mounting brackets on opposite sides of the main body portions to be supported by the head portions in the plane above the plane of the lower face of the wedge member.
Considerable difficulty has been encountered in attempting to mount side covers on linear induction motors in a manner such that they are maintained in a plane above the plane of the lower faces of the wedge members of the core. The present invention provides the improvement wherein a plurality of cover mounting brackets are located at longitudinally spaced intervals along the length of the core, each cover mounting bracket comprising a main body portion and a head portion, the head portion projecting laterally from the main body portion, the other end of the main body portion being supported by a wedge member with the head portion thereof disposed above the lower face of the wedge member and spaced below the lower face of its associated coil. The inner edges of the side covers being down-wardly curved and notched at longitudinally spaced intervals corresponding to the longitudinal spacing of the mounting brackets so as to extend inwardly and downwardly over the laterally ex-tending head portions of the mounting brackets on opposite sides of the main body portions to be supported by the head portions in the plane above the plane of the lower face of the wedge member.
Description
FIELD OF INVENTION
Thls inventlon relates to linear inductlon motors.
In particular, this lnvention relates to improvements in the mounting structure for mountlng the side covers Or the primary member of a single-sided linear induction motor.
PRIOR ART
In order to protect the nose portions Or the coils whlch pro~ect outwardly from o~posite sides Or the core of the primary B &ry member of a llnear induction motor, side covers are provided.
Cons~derable di~ficulty has been encountered in attemptlng to mount the side covers ln a manner such that they are malntained in a plane above the plane o~ the lower faces of the wedge members of the core. It is important to ensure that the covers do not pro~ect below the plane of the lower surfaces Or the wedge members in order to avoid a situatlon wherein the side covers may make contact with thes~xn~ary-member of the lnduction motor in association with which the primary member is used.
From time to time the lowermost surface Or the primary member may accidentally come in contact with the uppermost face Or the secondarymember and ir the side covers pro~ect below the lower-most face Or the primary member, the side covers may damage the secondary member over a substantial length of the secondary member. For this reason it is important to ensure that the lower surfaces Or the wedge members form the lowermost surrace of the A ~i~ Q r y sooondary member.
SUMMARY OF INVENTION
The present invention overcomes the difriculty Or mounting the side covers by provlding small mounting brackets at spaced intervals along the length Or the oppositely dlsposed side edges Or the core member to support the inner edges Or the slde ' ; ' :
- : .
. . , ~ :
1~60934 covers in a plane above the plane of the lower surface of the wedge members.
According to one aspect of the present invention, there is provided in a primary member of a single-sided linear induction motor having, a frame, a core member having a plurality of coil assemblies mounted in the coil slots thereof and secured therein by means of a plurality of wedge members, each of the wedge members having an upper face directed towards a coil assembly and a lower face disposed below the core member, the coil assemblies having nose portions projecting laterally from opposite sides of the core member, a pair of side covers adapted to extend over the nose portions of the coils, each side cover member having inner and outer longitudinally extending side edges, the outer side edge of each side cover member being secured to the frame outwardly from the coil noses on opposite sides of the core a substantial distance above the lower face of the wedge members, the improvement of; a plurality of cover mounting brackets located at longitudinally spaced intervals along the length of said core, each of said cover mounting brackets comprising a main body portion and a head portion at one end of the main body portion, the head portion projecting laterally from the main body portion, the other end of the main body portion being supported by a wedge member with the head portion thereof disposed above the lower face of the wedge member and spaced below the lower face of its associated coil, the inner edges of each of said side covers being downwardly curved and notched at longitudinally spaced intervals corres-ponding to the longitudinal spacing of the mounting - brackets so as to extend inwardly and downwardly over the laterally extendlng head portions Or the mounting brackets on opposlte sides o~ the main bcdy portions ~o be supported by the head portlon in a plane above the plane Or the lower face Or the wedge membGrs.
The lnvention will be more clearly understood arter reference to the following detailed speci~ication read in con-~unction with the drawings, wherein Fig. 1 is a pictorial vlew of the underside of a primary member Or a single-sided linear induction motor;
Fig. 2 is a sectional view along the line 2-2 Or Fig. l;
Fig. 3 ls a sectlonal view along the line 3-3 Or Fig. l;
Fig. 4 is an enlarged detailed vlew Or a mounting bracket according to an embodiment of the present invention, and Fig. 5 is an enlarged detalled view lllustrating the manner in whlch the lnner edge Or the slde covers is supported on the mountlng bracket.
Wlth reference to Flg. 1 of the drawings, the reference numeral 10 refers generally to a primary member Or a slngle-sided linear induction motor. The motor has a frame generally identified by the reference numeral 12. The rrame includes a pair Or oppositely disposed end wall members 14 between which a pair Or longltudinally extending L-shaped beams 16 (Fig. 2) e~- -tend. A second palr Or L-shaped brackets 18 extend longitudlnally Or the slde edges Or the rrame and are located at opposite sides Or the rrame a substantlal distance above the lower surface Or the core 20. The core 20 is mounted between the beams 16 by a plurality o~ bolts 22 which are located at longitudinally spaced lntervals along the length Or the core. The core 20 is formed with a plurality Or coil mountlng slots 24 e~tending trans-versely thereof. A plurality Or coils ~6 are mounted ln the 10609 ;34 core slots 24. As shown in Fig. 3 of the drawings, two coilmembers are arranged one on top of the other in the majority of the slots 24 and a spacer member 28 is located in the slots 24 which do not house two coil mem~ers. The coil assem~ly which is located within each slot 24 may, therefore, consist of two side lengths of coil arranged one above the other or one side length of coil and a spacer 28.
A pair of grooves 30 are formed in the oppositely dis-posed side walls of the slots 24 adjacent the lower end thereof.
A wedge member 32 (Fig. 4) i8 adapted to fit in a close fitting relationship within the lower end of each slot 24 and is provided with a pair of oppositely disposed shoulders 34 which fit within the grooves 30 formed in the side walls of the slot 24. The wedge members 32 are preferably made from an insulating material such as a plastics material. A shallow groove 36 is formed in the upper face of selected wedge members 32a and ex-tends inwardly from opposite ends thereof.
A mounting bracker generally identified by the reference numeral 40 is located in each of the grooves 36. As shown in Fig. 1 of the drawings, six mounting brackets are provided, three on either side of the core 20. As shown in Figs. 4 and 5 of the drawings, each of the mounting brackets 40 consists of a main body portion 42 and a head portion 44. The main body portion 42 is proportioned to fit in a close fitting relationship within the recess 36 formed in the upper surface ~f the wedge member 32a. The head portion 44 extends transversely of and projects laterally outwardly from opposite sides of the main portion to form a support for the inner edge 46 of the side cover members 48.
As shown in Figs. 1 and 2 of the drawings, each of the side covers 48 has an inner edge panel 46 and an outer edge panel 50 which are connected to one another by a screen member 52.
The inner edge member 46 is formed with a plurality of notches 56 and the portions of the inner edge member disposed on either side of the notches 56 has a shallow downward curvature so a~ to extend over the laterally projecting portions of the head 44 of the mounting brackets ~0.
The outer ide edges of the covers are secured by a plurality of bolts 58 to the L-shaped frame members 18 and opposite ends of the covers extend around the lips 45 which are formed on the inner face of each end wall member l4.
The main body portions 42 of the mounting brackets 40 are located within the coil slots 24 between the wedge members 32a and the underside of the coil assemblies. The head portion 44 projects outwardly from the end of the wedge member 32a a distance sufficient to enable the curved inner edge 46 of the side wall cover 48 to extend inwardly and downwardly over the head portion 44 to rest thereon. As shown in Fig. 2 of the drawings, the mounting bracket 40 serves to maintain the lower surface of the side covers above the plane 60 of the lower sur-face 33 of the wedge 32a. This arrangement ensures that ifthe primary member is accidentally lowered into engagement with the secondary memberj the lower surfaces 33 of the wedge members 32 will provide the first contact surface and will serve to space the side covers a sufficient distance above the secondary member to ensure that the secondary member is not damaged by contact with the side covers or vice versa.
These and other advantages of the prèeent invention will be apparent to those skilled in the art. ~ -.' ` 30
Thls inventlon relates to linear inductlon motors.
In particular, this lnvention relates to improvements in the mounting structure for mountlng the side covers Or the primary member of a single-sided linear induction motor.
PRIOR ART
In order to protect the nose portions Or the coils whlch pro~ect outwardly from o~posite sides Or the core of the primary B &ry member of a llnear induction motor, side covers are provided.
Cons~derable di~ficulty has been encountered in attemptlng to mount the side covers ln a manner such that they are malntained in a plane above the plane o~ the lower faces of the wedge members of the core. It is important to ensure that the covers do not pro~ect below the plane of the lower surfaces Or the wedge members in order to avoid a situatlon wherein the side covers may make contact with thes~xn~ary-member of the lnduction motor in association with which the primary member is used.
From time to time the lowermost surface Or the primary member may accidentally come in contact with the uppermost face Or the secondarymember and ir the side covers pro~ect below the lower-most face Or the primary member, the side covers may damage the secondary member over a substantial length of the secondary member. For this reason it is important to ensure that the lower surfaces Or the wedge members form the lowermost surrace of the A ~i~ Q r y sooondary member.
SUMMARY OF INVENTION
The present invention overcomes the difriculty Or mounting the side covers by provlding small mounting brackets at spaced intervals along the length Or the oppositely dlsposed side edges Or the core member to support the inner edges Or the slde ' ; ' :
- : .
. . , ~ :
1~60934 covers in a plane above the plane of the lower surface of the wedge members.
According to one aspect of the present invention, there is provided in a primary member of a single-sided linear induction motor having, a frame, a core member having a plurality of coil assemblies mounted in the coil slots thereof and secured therein by means of a plurality of wedge members, each of the wedge members having an upper face directed towards a coil assembly and a lower face disposed below the core member, the coil assemblies having nose portions projecting laterally from opposite sides of the core member, a pair of side covers adapted to extend over the nose portions of the coils, each side cover member having inner and outer longitudinally extending side edges, the outer side edge of each side cover member being secured to the frame outwardly from the coil noses on opposite sides of the core a substantial distance above the lower face of the wedge members, the improvement of; a plurality of cover mounting brackets located at longitudinally spaced intervals along the length of said core, each of said cover mounting brackets comprising a main body portion and a head portion at one end of the main body portion, the head portion projecting laterally from the main body portion, the other end of the main body portion being supported by a wedge member with the head portion thereof disposed above the lower face of the wedge member and spaced below the lower face of its associated coil, the inner edges of each of said side covers being downwardly curved and notched at longitudinally spaced intervals corres-ponding to the longitudinal spacing of the mounting - brackets so as to extend inwardly and downwardly over the laterally extendlng head portions Or the mounting brackets on opposlte sides o~ the main bcdy portions ~o be supported by the head portlon in a plane above the plane Or the lower face Or the wedge membGrs.
The lnvention will be more clearly understood arter reference to the following detailed speci~ication read in con-~unction with the drawings, wherein Fig. 1 is a pictorial vlew of the underside of a primary member Or a single-sided linear induction motor;
Fig. 2 is a sectional view along the line 2-2 Or Fig. l;
Fig. 3 ls a sectlonal view along the line 3-3 Or Fig. l;
Fig. 4 is an enlarged detailed vlew Or a mounting bracket according to an embodiment of the present invention, and Fig. 5 is an enlarged detalled view lllustrating the manner in whlch the lnner edge Or the slde covers is supported on the mountlng bracket.
Wlth reference to Flg. 1 of the drawings, the reference numeral 10 refers generally to a primary member Or a slngle-sided linear induction motor. The motor has a frame generally identified by the reference numeral 12. The rrame includes a pair Or oppositely disposed end wall members 14 between which a pair Or longltudinally extending L-shaped beams 16 (Fig. 2) e~- -tend. A second palr Or L-shaped brackets 18 extend longitudlnally Or the slde edges Or the rrame and are located at opposite sides Or the rrame a substantlal distance above the lower surface Or the core 20. The core 20 is mounted between the beams 16 by a plurality o~ bolts 22 which are located at longitudinally spaced lntervals along the length Or the core. The core 20 is formed with a plurality Or coil mountlng slots 24 e~tending trans-versely thereof. A plurality Or coils ~6 are mounted ln the 10609 ;34 core slots 24. As shown in Fig. 3 of the drawings, two coilmembers are arranged one on top of the other in the majority of the slots 24 and a spacer member 28 is located in the slots 24 which do not house two coil mem~ers. The coil assem~ly which is located within each slot 24 may, therefore, consist of two side lengths of coil arranged one above the other or one side length of coil and a spacer 28.
A pair of grooves 30 are formed in the oppositely dis-posed side walls of the slots 24 adjacent the lower end thereof.
A wedge member 32 (Fig. 4) i8 adapted to fit in a close fitting relationship within the lower end of each slot 24 and is provided with a pair of oppositely disposed shoulders 34 which fit within the grooves 30 formed in the side walls of the slot 24. The wedge members 32 are preferably made from an insulating material such as a plastics material. A shallow groove 36 is formed in the upper face of selected wedge members 32a and ex-tends inwardly from opposite ends thereof.
A mounting bracker generally identified by the reference numeral 40 is located in each of the grooves 36. As shown in Fig. 1 of the drawings, six mounting brackets are provided, three on either side of the core 20. As shown in Figs. 4 and 5 of the drawings, each of the mounting brackets 40 consists of a main body portion 42 and a head portion 44. The main body portion 42 is proportioned to fit in a close fitting relationship within the recess 36 formed in the upper surface ~f the wedge member 32a. The head portion 44 extends transversely of and projects laterally outwardly from opposite sides of the main portion to form a support for the inner edge 46 of the side cover members 48.
As shown in Figs. 1 and 2 of the drawings, each of the side covers 48 has an inner edge panel 46 and an outer edge panel 50 which are connected to one another by a screen member 52.
The inner edge member 46 is formed with a plurality of notches 56 and the portions of the inner edge member disposed on either side of the notches 56 has a shallow downward curvature so a~ to extend over the laterally projecting portions of the head 44 of the mounting brackets ~0.
The outer ide edges of the covers are secured by a plurality of bolts 58 to the L-shaped frame members 18 and opposite ends of the covers extend around the lips 45 which are formed on the inner face of each end wall member l4.
The main body portions 42 of the mounting brackets 40 are located within the coil slots 24 between the wedge members 32a and the underside of the coil assemblies. The head portion 44 projects outwardly from the end of the wedge member 32a a distance sufficient to enable the curved inner edge 46 of the side wall cover 48 to extend inwardly and downwardly over the head portion 44 to rest thereon. As shown in Fig. 2 of the drawings, the mounting bracket 40 serves to maintain the lower surface of the side covers above the plane 60 of the lower sur-face 33 of the wedge 32a. This arrangement ensures that ifthe primary member is accidentally lowered into engagement with the secondary memberj the lower surfaces 33 of the wedge members 32 will provide the first contact surface and will serve to space the side covers a sufficient distance above the secondary member to ensure that the secondary member is not damaged by contact with the side covers or vice versa.
These and other advantages of the prèeent invention will be apparent to those skilled in the art. ~ -.' ` 30
Claims (2)
1. In a primary member of a single-sided linear induction motor having, a frame, a core member having a plurality of coil assemblies mounted in the coil slots thereof and secured therein by means of a plurality of wedge members, each of the wedge members having an upper race directed towards a coil assembly and a lower face disposed below the core member, the coil assemblies having nose portions protecting laterally from opposite sides of the core member, a pair of side covers adapted to extend over the nose portions of the coils, each side cover member having inner and outer longitudinally extending side edges, the outer side edge of each side cover member being secured to the frame outwardly from the coil noses on opposite sides of the core a substantial distance above the lower face of the wedge members, the improvement of; a plurality of cover mounting brackets located at longitudinally spaced intervals along the length of said core, each of said cover mounting brackets comprising a main body portion and a head portion at one end of the main body portions the head portion projecting laterally from the main body portion, the other end of the main body portion being located within a coil slot of the core and secured therein between a wedge member and a coil assembly with the head portion thereof disposed above the lower race of the wedge member and spaced below the lower race of its associated coil, the inner edges of each of said side covers being down-wardly curved and notched at longitudinally spaced intervals corresponding to the longitudinal spacing of the mounting brackets so as to extend inwardly and downwardly over the later-ally extending head portions of the mounting brackets on opposite sides of the main body portions to be supported by the head portion in a plane above the plane of the lower race of the wedge members.
2. In a primary member of a single-sided linear induction motor having, a frame, a core member having a plurality of coil assemblies mounted in the coil slots thereof and secured therein by means of a plurality of wedge members, each of the wedge members having an upper face directed towards a coil assembly and a lower face disposed below the core member, the coil assemblies having nose portions projecting laterally from opposite sides of the core member, a pair of side covers adapted to extend over the nose portions of the coils, each side cover member having inner and outer longi-tudinally extending side edges, the outer side edge of each side cover member being secured to the frame outwardly from the coil noses on opposite sides of the core a substantial distance above the lower face of the wedge members, the improvement of; a plurality of cover mounting brackets located at longitudinally spaced intervals along the length of said core, each of said cover mounting brackets comprising a main body portion and head portion at one end of the main body portion, the head portion projecting laterally from the main body portion, the other end of the main body portion being supported by a wedge member with the head portion thereof disposed above the lower face of the wedge member and spaced below the lower face of its associated coil, the inner edges of each of said side covers being downwardly curved and notched at longitudinally spaced intervals corresponding to the longitudinal spacing of the mounting brackets so as to extend inwardly and downwardly over the laterally extending head portions of the mounting brackets on opposite sides of the main body portions to be supported by the head portion in a plane above the plane of the lower face of the wedge member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA254,743A CA1060934A (en) | 1976-06-14 | 1976-06-14 | Attachment of side covers to linear induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA254,743A CA1060934A (en) | 1976-06-14 | 1976-06-14 | Attachment of side covers to linear induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1060934A true CA1060934A (en) | 1979-08-21 |
Family
ID=4106200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA254,743A Expired CA1060934A (en) | 1976-06-14 | 1976-06-14 | Attachment of side covers to linear induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1060934A (en) |
-
1976
- 1976-06-14 CA CA254,743A patent/CA1060934A/en not_active Expired
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