Casting structure shared by universal motor and explosion-proof motor

Abstract

The utility model provides a common casting structure for a universal motor and an explosion-proof motor, which comprises a mounting support block at the bottom of a motor base, a rotating cavity in the center of the top of the motor base, a wiring pipe on one side of the top end of the motor base, and a universal junction box mounting module connected with the top of the wiring pipe through a bolt, the first cooling fins are arranged on the periphery of the side, away from the mounting supporting block, of the motor base. The two universal end covers are arranged on the left side and the right side of the top of the motor base respectively, the universal bearing inner covers and the universal bearing outer covers are clamped in the centers of the universal end covers, the universal bearing inner covers are located on the sides, close to the rotating cavity, of the universal end covers, and the universal motor and the explosion-proof motor adopt the same casting structure, so that the cost of a whole set of molds can be saved; when explosive-proof motor castings are processed in batches, castings which are made of HT250 materials and have out-of-tolerance dimensional precision but are within the tolerance range of the general motor can be used for manufacturing the general motor, and the processing cost of the general motor is reduced.

Description

Technical Field

[0001] The utility model relates to the field of motor manufacturing, in particular to the technical field of reducing motor manufacturing costs, and specifically provides a common casting structure for general-purpose and flameproof motors. Background Art

[0002] When manufacturing existing motors, it is necessary to manufacture general-purpose and flameproof motors at different energy efficiency levels. Two different sets of molds need to be designed and manufactured according to the different needs of their casing castings. The flameproof motor uses the gap and length of the flameproof joint surface to ensure that even if combustion or explosion occurs in the flameproof cavity of the motor, combustion or explosion will not occur outside the flameproof cavity. The smaller the gap of the flameproof joint surface, the smaller the length can be. Generally, the gap of the flameproof joint surface is 0.1-0.2mm, and the length is 15-40mm. Therefore, the biggest difference between the flameproof motor and the general-purpose motor is the different gap and length at the junction of the inner and outer cavities of the motor. It is now necessary to design a common casting that can be used for both general-purpose and flameproof motors based on the flameproof motor. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a casting structure common to general-purpose and flameproof motors, so as to solve the difficulties of the prior art.

[0004] To achieve the above and other related purposes, the present invention provides a casting structure for general-purpose and flameproof motors, comprising:

[0005] The motor base 1 has a mounting support block 11 at the bottom, a rotating cavity 18 in the middle of the top of the motor base 1, a wiring tube 12 at one side of the top of the motor base 1, a universal terminal box mounting module 2 connected by bolts to the top of the wiring tube 12, a lifting ring mounting boss 13 at the top of the motor base 1 on one side of the wiring tube 12, a No. 1 threaded hole in the middle of the lifting ring mounting boss 13, a lifting ring 14 in the No. 1 threaded hole is provided with a threaded engagement clip, and connecting bosses 15 are provided around the left and right ends of the motor base 1, and a No. 2 threaded hole 16 is provided in the middle of the connecting boss 15;

[0006] The first heat dissipation fin 17 is arranged around the motor base 1 on a side away from the mounting support block 11;

[0007] Universal end caps 3, two of which are provided. The two universal end caps 3 are respectively provided on the left and right sides of the top of the motor base 1. One side of the universal end cap 3 is stuck in the rotating cavity 18. The center of the outer side of the universal end cap 3 is connected to the connecting boss 15 by a bolt;

[0008] The universal bearing inner cover 4 and the universal bearing outer cover 5 are clamped in the center of the universal end cover 3 , and the universal bearing inner cover 4 is located on the side of the universal end cover 3 close to the rotating chamber 18 .

[0009] According to the preferred embodiment, the universal junction box mounting module 2 includes: an adapter plate 21 and a sealing gasket 23. The adapter plate 21 is arranged directly above the wiring tube 12 by bolt connection. A square wire threading groove 22 is opened in the center of the adapter plate 21. The top and bottom of the adapter plate 21 are respectively fitted with sealing gaskets 23. The sealing gasket 23 at the bottom of the adapter plate 21 is in contact with the wiring tube 12. Several wire holes 24 are opened on the sealing gasket 23.

[0010] According to the preferred embodiment, an annular connecting block 31 is provided in the middle area of the outer wall of the universal end cover 3, one end of the annular connecting block 31 is fitted with the left and right ends of the motor base 1, and a No. 3 threaded hole 32 is provided around the annular connecting block 31, and a No. 1 bolt 33 is passed through the middle of the No. 3 threaded hole 32, and the bottom of the No. 1 bolt 33 passes through the annular connecting block 31 and is clamped in the No. 2 threaded hole 16; the center of the universal end cover 3 is a bearing hole 34, and the universal end cover 3 is provided with an annular groove 35 on the side away from the rotating chamber 18, and a No. 2 heat dissipating fin 36 is provided in the annular groove 35, and several No. 4 threaded holes 37 are provided on the boss between the bearing hole 34 and the annular groove 35, which are clamped in the rotating chamber 18; a mounting groove 38 is provided in the center of one end of the universal end cover 3, and the mounting groove 38 is communicated with the bearing hole 34, and the bottom end of the mounting groove 38 is located outside the bearing hole 34 and is provided with an annular mounting block 39.

[0011] According to the preferred embodiment, one side of the universal bearing inner cover 4 is clamped in the annular mounting block 39, and the other side of the universal bearing inner cover 4 is provided with a No. 1 annular clamping platform 41, and the No. 1 annular clamping platform 41 extends into the bearing hole 34, and the outer contour of the No. 1 annular clamping platform 41 is in contact with the wall of the bearing hole 34. A No. 1 shaft positioning hole 42 is provided in the center of the universal bearing inner cover 4, and a heat dissipation ring groove 43 is provided on the side of the universal bearing inner cover 4 away from the No. 1 heat dissipation fin 17, and reinforcing ribs 44 are provided at equal intervals inside the heat dissipation ring groove 43.

[0012] According to the preferred embodiment, the universal bearing outer cover 5 is arranged on a boss between the bearing hole 34 and the annular groove 35 on the side of the universal end cover 3 away from the motor base 1, and a No. 2 rotating shaft positioning hole 51 is opened in the center of the universal bearing outer cover 5. The universal bearing outer cover 5 is provided with a No. 2 annular clamping platform 52 on the side close to the motor base 1, and the top of the No. 2 annular clamping platform 52 extends into the bearing hole 34, and the outer contour of the No. 2 annular clamping platform 52 is in contact with the wall of the bearing hole 34.

[0013] According to the preferred embodiment, the universal bearing outer cover 5 is provided with No. 3 bolts 53 around it, and the bottom of the No. 3 bolts 53 passes through the universal bearing outer cover 5 and the No. 4 threaded hole 37 in sequence to be connected to the universal bearing inner cover 4.

[0014] According to a preferred embodiment, the first rotation shaft positioning hole 42 and the second rotation shaft positioning hole 51 have the same diameter.

[0015] The utility model adopts a motor base, a universal end cover, a universal bearing inner cover and a universal bearing outer cover. When batch processing explosion-proof motor castings, some HT250 material castings with excessive dimensional accuracy but within the tolerance range of universal motors can be used in the manufacturing of subsequent batches of universal motors. Although it cannot improve the pass rate during the production of explosion-proof motors, it can reduce the processing cost in the processing of universal motors. In addition, using the same casting structure for universal motors and explosion-proof motors can save a whole set of mold costs, further reducing costs, and at the same time, the universal motors have certain safety performance and improved quality.

[0016] The following will describe in more detail the best embodiments of the present invention in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 Shown is an enlarged schematic diagram of the three-dimensional structure of the motor base in the present utility model;

[0019] Figure 3 Shown is an exploded schematic diagram of a universal junction box installation module in the present invention;

[0020] Figure 4 Shown is a schematic diagram of the assembly of a universal end cover and a universal bearing outer cover in the present utility model;

[0021] Figure 5 Shown is a schematic diagram of the assembly of a universal end cover and a universal bearing inner cover in the present invention;

[0022] Figure 6 Shown is an enlarged schematic diagram of the three-dimensional structure of the universal end cover in the present utility model;

[0023] Figure 7 Shown is an enlarged schematic diagram of the three-dimensional structure of the other side of the universal end cover in the present invention;

[0024] Figure 8 Shown is a schematic diagram of a universal bearing inner cover and an assembly diagram of a universal bearing inner cover in the present invention;

[0025] Figure 9 Shown is an enlarged schematic diagram of the three-dimensional structure of the universal bearing inner cover in the present invention;

[0026] Figure 10 Shown is an enlarged schematic diagram of the three-dimensional structure of the other side of the universal bearing inner cover in the present invention;

[0027] Figure 11 Shown is an enlarged schematic diagram of the three-dimensional structure of the universal bearing outer cover in the present utility model;

[0028] Description of labels

[0029] 1. Motor base; 11. Mounting support block; 12. Wiring tube; 13. Lifting ring mounting boss; 14. Lifting ring; 15. Connecting boss; 16. No. 2 threaded hole; 17. No. 1 cooling fin; 18. Rotating chamber;

[0030] 2. Universal junction box installation module; 21. Adapter plate; 22. Square wire duct; 23. Sealing gasket; 24. Wire hole;

[0031] 3. Universal end cap; 31. Annular connecting block; 32. Threaded hole No. 3; 33. Bolt No. 1; 34. Bearing hole; 35. Annular groove; 36. Heat sink No. 2; 37. Threaded hole No. 4; 38. Mounting slot; 39. Annular mounting block;

[0032] 4. Universal bearing inner cover; 41. No. 1 annular clamping table; 42. No. 1 shaft positioning hole; 43. Heat dissipation ring groove; 44. Reinforcement rib;

[0033] 5. Universal bearing cover; 51. No. 2 shaft positioning hole; 52. No. 2 annular clamping table; 53. No. 3 bolt; DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The present invention proposes a common casting structure for general-purpose and flameproof motors, which is used in the manufacturing process of general-purpose and flameproof energy-efficient motors. The present invention does not restrict the energy efficiency level of general-purpose and flameproof motors. However, the structure of the motor base 1, universal end cover 3, universal bearing inner cover 4 and universal bearing outer cover 5 is particularly suitable for use as a common casting for general-purpose and flameproof motors to reduce production costs.

[0038] In general, the universal and flameproof motor common casting structure proposed in this utility model mainly includes: motor base 1, universal end cover 3, universal bearing inner cover 4 and universal bearing outer cover 5. Figure 1 , which shows the arrangement relationship of the motor base 1, the universal end cover 3, the universal bearing inner cover 4 and the universal bearing outer cover 5.

[0039] The utility model proposes a common casting structure for general-purpose and flameproof motors. Only one set of molds is needed for the production of general-purpose and flameproof motors. However, HT200 gray cast iron is used in the production of general-purpose motors, while HT250 gray cast iron is used in the production of flameproof motors. When installing the terminal box of the general-purpose motor, an ordinary steel plate terminal box is used, while a flameproof terminal box is used in the production of the flameproof motor. Because the dimensional accuracy and assembly accuracy of the flameproof motor are very high during processing to ensure its safety, a large number of castings with unqualified dimensional tolerances will be produced during mass production inspection. Parts are produced, among which a large number of unqualified castings have tolerances that meet the dimensional tolerances of general-purpose motors. HT250 castings with dimensional accuracy exceeding the tolerance range of flameproof motors during processing can be used in subsequent batches of general-purpose motor manufacturing. Although this cannot improve the pass rate of flameproof motor production, it can reduce processing costs in the processing of general-purpose motors. In addition, using the same casting structure for general-purpose motors and flameproof motors can save a whole set of mold costs, further reducing costs, and at the same time, the general-purpose motors have certain safety performance and improved quality.

[0040] The bottom of the above-mentioned motor base 1 is a mounting support block 11, the center of the top of the motor base 1 is a rotating cavity 18, one side of the top of the motor base 1 is a wiring tube 12, the top of the motor base 1 is located on the side of the wiring tube 12 is a lifting ring mounting boss 13, a No. 1 threaded hole is provided in the center of the lifting ring mounting boss 13, a lifting ring 14 is provided in the No. 1 threaded hole through a threaded fit, connecting bosses 15 are provided around the left and right ends of the motor base 1, a No. 2 threaded hole 16 is provided in the center of the connecting boss 15, and a No. 1 heat dissipation fin 17 is provided around the side of the motor base 1 away from the mounting support block 11.

[0041] The above-mentioned universal junction box mounting module 2 is arranged on the top of the wiring tube 12 by bolt connection. The universal junction box mounting module 2 includes: an adapter plate 21 and a sealing gasket 23. The adapter plate 21 is arranged directly above the wiring tube 12 by bolt connection. A square wire threading groove 22 is opened in the center of the adapter plate 21. The top and bottom of the adapter plate 21 are respectively fitted with sealing gaskets 23. The sealing gasket 23 at the bottom of the adapter plate 21 is in contact with the wiring tube 12. Several wire holes 24 are opened on the sealing gasket 23. The universal junction box mounting module 2 is a flameproof structure. The sealing gasket 23 can effectively isolate the fire source in the rotating chamber 18 and seal the rotating chamber 18.

[0042] The above-mentioned universal end covers 3 are provided with two, and the two universal end covers 3 are respectively arranged on the left and right sides of the top of the motor base 1. One side of the universal end cover 3 is stuck in the rotating cavity 18, and the center of the outer side of the universal end cover 3 is connected to the connecting boss 15 by a bolt. An annular connecting block 31 is provided in the middle area of the outer wall of the universal end cover 3, and one end of the annular connecting block 31 is fitted with the left and right ends of the motor base 1. A No. 3 threaded hole 32 is opened around the annular connecting block 31, and a No. 1 bolt 33 is passed through the center of the No. 3 threaded hole 32. The bottom of the No. 1 bolt 33 passes through the annular connecting block 31 and is stuck in the No. 1 threaded hole In the pores; the center of the universal end cover 3 is a bearing hole 34, and the universal end cover 3 is provided with an annular groove 35 on the side away from the rotating chamber 18, and a No. 2 heat dissipation fin 36 is provided in the annular groove 35. Several No. 4 threaded holes 37 are provided on the boss between the bearing hole 34 and the annular groove 35. A mounting groove 38 is provided in the center of one end of the universal end cover 3 clamped in the rotating chamber 18, and the mounting groove 38 is communicated with the bearing hole 34. The bottom end of the mounting groove 38 is located outside the bearing hole 34 and is provided with an annular mounting block 39. The universal end cover 3 is clamped on one side of the rotating chamber 18 and is a cylindrical explosion-proof joint surface structure.

[0043] The above-mentioned universal bearing inner cover 4 and universal bearing outer cover 5 are clamped in the middle of the universal end cover 3, and the universal bearing inner cover 4 is located on the side of the universal end cover 3 close to the rotating chamber 18, wherein one side of the universal bearing inner cover 4 is clamped in the annular mounting block 39, and the other side of the universal bearing inner cover 4 is provided with a No. 1 annular clamping platform 41, the No. 1 annular clamping platform 41 extends into the bearing hole 34, and the outer contour of the No. 1 annular clamping platform 41 fits the hole wall of the bearing hole 34. A No. 1 shaft positioning hole 42 is provided in the middle of the universal bearing inner cover 4, and a heat dissipation ring groove 4 is provided on the side of the universal bearing inner cover 4 away from the No. 1 heat dissipation fin 17. 3. Increase the heat dissipation area. Reinforcing ribs 44 are arranged at equal intervals inside the heat dissipation ring groove 43. The universal bearing outer cover 5 is arranged on a boss between the bearing hole 34 and the annular groove 35 on the side of the universal end cover 3 away from the motor base 1. A No. 2 shaft positioning hole 51 is opened in the center of the universal bearing outer cover 5. A No. 2 annular clamping platform 52 is provided on the side of the universal bearing outer cover 5 close to the motor base 1. The top of the No. 2 annular clamping platform 52 extends into the bearing hole 34. The outer contour of the No. 2 annular clamping platform 52 fits with the wall of the bearing hole 34. The No. 1 annular clamping platform 41 and the No. 2 annular clamping platform 52 are cylindrical explosion-proof joint surface structures.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A casting structure common to general-purpose and flameproof motors, characterized in that: include: A motor base (1), wherein the bottom of the motor base (1) is a mounting support block (11), the center of the top of the motor base (1) is a rotating cavity (18), one side of the top of the motor base (1) is a wiring tube (12), the top of the wiring tube (12) is provided with a universal wiring box mounting module (2) through bolt connection, the top of the motor base (1) is located on one side of the wiring tube (12) is a lifting ring mounting boss (13), a No. 1 threaded hole is provided in the center of the lifting ring mounting boss (13), a lifting ring (14) is provided in the No. 1 threaded hole through threaded engagement, connecting bosses (15) are provided around the left and right ends of the motor base (1), and a No. 2 threaded hole (16) is provided in the center of the connecting boss (15); A first heat dissipation fin (17), the first heat dissipation fin (17) being arranged around a side of the motor base (1) away from the mounting support block (11); Universal end covers (3), two of which are provided, and the two universal end covers (3) are respectively provided on the left and right sides of the top of the motor base (1), one side of the universal end cover (3) is clamped in the rotating cavity (18), and the center of the outer side of the universal end cover (3) is connected to the connecting boss (15) by a bolt; A universal bearing inner cover (4) and a universal bearing outer cover (5) are provided, wherein the universal bearing inner cover (4) and the universal bearing outer cover (5) are clamped in the center of the universal end cover (3), and the universal bearing inner cover (4) is located on a side of the universal end cover (3) close to the rotating chamber (18).

2. The common casting structure for general-purpose and flameproof motors according to claim 1 is characterized in that: The universal junction box installation module (2) comprises: an adapter plate (21) and a sealing gasket (23); the adapter plate (21) is arranged directly above the wiring tube (12) by bolt connection; a square wire threading groove (22) is provided in the center of the adapter plate (21); sealing gaskets (23) are respectively provided on the top and bottom of the adapter plate (21); the sealing gasket (23) at the bottom of the adapter plate (21) contacts the wiring tube (12); and a plurality of wire holes (24) are provided on the sealing gasket (23).

3. The common casting structure for general-purpose and flameproof motors according to claim 2 is characterized in that: An annular connecting block (31) is provided in the middle area of the outer wall of the universal end cover (3), one end of the annular connecting block (31) is fitted with the left and right ends of the motor base (1), a number three threaded hole (32) is provided around the annular connecting block (31), a number one bolt (33) is passed through the middle of the number three threaded hole (32), and the bottom of the number one bolt (33) passes through the annular connecting block (31) and is clamped in the number two threaded hole (16); a bearing hole (34) is provided in the middle of the universal end cover (3), and the universal end cover (3 ) is provided with an annular groove (35) on the side away from the rotating chamber (18), and a No. 2 heat dissipation fin (36) is provided in the annular groove (35). A plurality of No. 4 threaded holes (37) are provided on the boss between the bearing hole (34) and the annular groove (35). A mounting groove (38) is provided in the middle of one end of the universal end cover (3) clamped in the rotating chamber (18), and the mounting groove (38) is communicated with the bearing hole (34). The bottom end of the mounting groove (38) is located outside the bearing hole (34) and is provided with an annular mounting block (39).

4. The common casting structure for general-purpose and flameproof motors according to claim 3 is characterized in that: One side of the universal bearing inner cover (4) is clamped in the annular mounting block (39), and the other side of the universal bearing inner cover (4) is provided with a first annular clamping platform (41), the first annular clamping platform (41) extends into the bearing hole (34), and the outer contour of the first annular clamping platform (41) is in contact with the hole wall of the bearing hole (34). A first rotating shaft positioning hole (42) is provided in the center of the universal bearing inner cover (4), and a heat dissipation ring groove (43) is provided on the side of the universal bearing inner cover (4) away from the first heat dissipation fin (17), and reinforcing ribs (44) are provided at equal intervals inside the heat dissipation ring groove (43).

5. The common casting structure for general-purpose and flameproof motors according to claim 4, characterized in that: The universal bearing outer cover (5) is arranged on a boss between the bearing hole (34) and the annular groove (35) on the side of the universal end cover (3) away from the motor base (1); a second shaft positioning hole (51) is provided in the center of the universal bearing outer cover (5); a second annular clamping platform (52) is provided on the side of the universal bearing outer cover (5) close to the motor base (1); the top of the second annular clamping platform (52) extends into the bearing hole (34); and the outer contour of the second annular clamping platform (52) is in contact with the wall of the bearing hole (34).

6. The common casting structure for general-purpose and flameproof motors according to claim 5, characterized in that: The universal bearing outer cover (5) is provided with number three bolts (53) around its periphery, and the bottom of the number three bolts (53) sequentially passes through the universal bearing outer cover (5) and the number four threaded hole (37) to be connected to the universal bearing inner cover (4).

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