Permanent magnet direct current motor casing for engineering vehicle

Abstract

The utility model relates to the technical field of motor manufacturing, and discloses a permanent magnet direct current motor casing for an engineering vehicle, which comprises an outer casing, an inner casing is arranged on the inner wall of the outer casing, and four groups of magnetic pole blocks are arranged on the inner wall of the inner casing. According to the permanent magnet direct current motor shell for the engineering vehicle, the outer shell, the inner shell, the first stepped groove, the second stepped groove and the mounting bolts are matched for use, so that the outer shell is formed by welding after a thin-wall steel plate is rolled into a cylinder, the inner shell is formed by punching a steel plate roll, and the first stepped groove and the second stepped groove are formed in the outer shell and the inner shell respectively; the mounting bolts fix the outer shell, the inner shell and the magnetic pole blocks together through the first stepped grooves and the second stepped grooves, so that compared with a traditional seamless steel tube shell, the permanent magnet direct current motor shell is lower in machining and manufacturing cost and lower in raw material cost, and the manufacturing cost of the permanent magnet direct current motor shell is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor manufacturing technical field, concretely is a permanent magnet DC motor casing for engineering vehicle. BACKGROUND

[0002] Some permanent magnet DC motors are often used in engineering vehicles to provide power for some mechanical structures, and the casing of the permanent magnet DC motor is mainly used for protecting the internal motor parts and providing mechanical support. However, the casing of the existing permanent magnet DC motor is usually made of seamless steel pipes, the surface of the seamless steel pipe needs to be cut and punched, and the raw material cost and processing cost of the seamless steel pipe are relatively high, so the manufacturing cost of the motor casing is relatively high. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the defects of the prior art, the utility model provides a permanent magnet DC motor casing for engineering vehicle, which solves the problems in the above background art.

[0005] (II) Technical solutions

[0006] To achieve the above object, the utility model provides the following technical scheme: a permanent magnet DC motor casing for engineering vehicle, comprising an outer shell, an inner shell is arranged on the inner wall of the outer shell, four groups of magnetic pole blocks are arranged on the inner wall of the inner shell, eight groups of mounting bolts are inserted into the outer surface of the outer shell, and the inner end of the mounting bolt penetrates through the outer surface of the inner shell and is threadedly connected with the outer surface of the magnetic pole block.

[0007] Preferably, the material of the outer shell is Q235 steel, the thickness of the outer shell is one and a half millimeters, the top of the outer surface of the outer shell is provided with a welding seam, and the outer surface of the outer shell is sprayed with rust-proof paint.

[0008] Preferably, the material of the inner shell is 316L stainless steel, the thickness of the inner shell is two millimeters, and the top of the outer surface of the inner shell is provided with a welding seam.

[0009] Preferably, the mounting bolt is a conical inner hexagonal bolt, and the outer surfaces of the outer shell and the inner shell are respectively provided with a first stepped groove and a second stepped groove matched with the mounting bolt.

[0010] Preferably, the outer surface of the inner shell is uniformly provided with four groups of reinforcing rib grooves, the cross section of the reinforcing rib groove is semicircular arc, and the inner diameter of the semicircular arc is fifteen millimeters.

[0011] Preferably, the material of the mounting bolt is 45 steel, the mounting bolt is subjected to quenching and tempering heat treatment as a whole, and the outer surface of the mounting bolt is subjected to chemical blackening treatment.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the engineering vehicle permanent magnet DC motor shell has the following beneficial effects:

[0014] 1、The engineering vehicle permanent magnet DC motor shell, by cooperating the outer shell body, the inner shell body, the first stepped groove, the second stepped groove and the mounting bolt, the outer shell body is rolled into a cylinder from a thin-wall steel plate and then welded into a shape, the inner shell body is punched into a shape from a steel plate, the first stepped groove and the second stepped groove are arranged on the outer shell body and the inner shell body respectively, and the mounting bolt fixes the outer shell body, the inner shell body and the magnetic pole block together through the first stepped groove and the second stepped groove, so that the device has lower processing and manufacturing cost than a traditional seamless steel pipe shell, and also has lower raw material cost than a seamless steel pipe, and the manufacturing cost of the permanent magnet DC motor shell is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the utility model;

[0016] Fig. 2 It is a structural expanded schematic view of the utility model;

[0017] Fig. 3 It is a sectional structural schematic view of the utility model.

[0018] In the drawing: 1, outer shell body; 101, first stepped groove; 2, inner shell body; 201, second stepped groove; 202, reinforcing rib groove; 3, magnetic pole block; 4, mounting bolt. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figs. 1-3The utility model provides a technical scheme: an engineering vehicle permanent magnet DC motor casing, including the shell body 1, the inner wall of shell body 1 is provided with inner shell 2, the inner wall of inner shell 2 is provided with four groups of magnetic pole block 3, the outer surface of shell body 1 is inserted with eight groups of mounting bolt 4, the inner end of mounting bolt 4 passes through the outer surface of inner shell 2 and is connected with the outer surface of magnetic pole block 3 with screw thread, through shell body 1, inner shell 2, first stepped groove 101, second stepped groove 201 and mounting bolt 4 cooperation uses, make shell body 1 by thin wall steel sheet is rolled into cylinder and is welded into shape, inner shell 2 is by steel sheet roll stamping and is formed, shell body 1 and inner shell 2 are provided with first stepped groove 101 and second stepped groove 201 respectively, mounting bolt 4 passes through first stepped groove 101 and second stepped groove 201 and fixes shell body 1, inner shell 2 and magnetic pole block 3 together, to make the device compared with traditional seamless steel tube casing processing cost is lower, compared with seamless steel tube raw material cost is also lower, further reduces the manufacturing cost of permanent magnet DC motor casing.

[0021] In the utility model, in order to further reduce the manufacturing cost of shell body 1, therefore the material of shell body 1 is Q235 steel, the thickness of shell body 1 is one and a half millimeter, the top of the outer surface of shell body 1 is provided with a welding seam, the outer surface of shell body 1 is sprayed with rustproof paint, by the structure and material setting of shell body 1, the manufacturing cost of shell body 1 is further reduced.

[0022] In the utility model, in order to further reduce the manufacturing cost of inner shell 2, therefore the material of inner shell 2 is 316L stainless steel, the thickness of inner shell 2 is two millimeters, the top of the outer surface of inner shell 2 is provided with a welding seam, by the structure and material setting of inner shell 2, the manufacturing cost of inner shell 2 is further reduced.

[0023] In the utility model, in order to further enhance the stability of mounting bolt 4 installation, therefore the mounting bolt 4 is conical internal hexagon bolt, the outer surface of shell body 1 and inner shell 2 is provided with first stepped groove 101 and second stepped groove 201 matched with mounting bolt 4 respectively, by setting first stepped groove 101 and second stepped groove 201, the mounting bolt 4 can fix shell body 1 and inner shell 2 simultaneously, to further enhance the stability of mounting bolt 4 installation.

[0024] In the utility model, in order to further enhance the structural stability of inner shell 2, therefore four groups of reinforcing rib grooves 202 are evenly provided on the outer surface of inner shell 2, the cross section of reinforcing rib groove 202 is semicircular arc, the inner diameter of semicircular arc is fifteen millimeters, by setting reinforcing rib groove 202, the structural stability of inner shell 2 is further enhanced.

[0025] The utility model discloses, in order to further strengthen the structural strength of mounting bolt 4, therefore the material quality of mounting bolt 4 is 45 number steel, mounting bolt 4 whole does quenching and tempering heat treatment, the outer surface of mounting bolt 4 does chemical blackening treatment, through the material setting of mounting bolt 4, to further strengthen the structural strength of mounting bolt 4.

[0026] In use, the outer shell 1 is rolled into a cylinder by a thin-walled steel plate and then welded into shape, and the inner shell 2 is stamped into shape by a steel plate, the first stepped groove 101 and the second stepped groove 201 are arranged on the outer shell 1 and the inner shell 2 respectively, the mounting bolt 4 passes through the first stepped groove 101 and the second stepped groove 201 and is screwed with the magnetic pole block 3, and the mounting bolt 4 fixes the outer shell 1, the inner shell 2 and the magnetic pole block 3 together.

[0027] In summary, the permanent magnet DC motor shell for engineering vehicles has the advantages that the outer shell 1 is rolled into a cylinder by a thin-walled steel plate and then welded into shape, the inner shell 2 is stamped into shape by a steel plate, the first stepped groove 101 and the second stepped groove 201 are arranged on the outer shell 1 and the inner shell 2 respectively, and the mounting bolt 4 fixes the outer shell 1, the inner shell 2 and the magnetic pole block 3 together through the first stepped groove 101 and the second stepped groove 201, so that the device has lower processing and manufacturing costs than a traditional seamless steel tube shell and also has lower raw material costs than a seamless steel tube, and the manufacturing costs of the permanent magnet DC motor shell are further reduced.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet DC motor housing for an engineering vehicle comprising an outer housing (1) characterised in that: The inner wall of the outer shell (1) is provided with an inner shell (2), the inner wall of the inner shell (2) is provided with four groups of magnetic pole blocks (3), the outer surface of the outer shell (1) is inserted with eight groups of mounting bolts (4), and the inner end of the mounting bolt (4) penetrates through the outer surface of the inner shell (2) and is threadedly connected with the outer surface of the magnetic pole block (3).

2. The permanent magnet DC machine housing for an engineering vehicle of claim 1, wherein: The material of the outer shell (1) is Q235 steel, the thickness of the outer shell (1) is one point five millimeters, the top of the outer surface of the outer shell (1) is provided with a welding seam, and the outer surface of the outer shell (1) is sprayed with rust-proof paint.

3. The permanent magnet DC machine housing for an engineered vehicle of claim 1, wherein: The material of the inner shell (2) is 316L stainless steel, the thickness of the inner shell (2) is two millimeters, and the top of the outer surface of the inner shell (2) is provided with a welding seam.

4. The permanent magnet DC machine housing for an off-highway vehicle of claim 1, wherein: The mounting bolt (4) is a conical inner hexagonal bolt, and the outer surfaces of the outer shell (1) and the inner shell (2) are respectively provided with a first stepped groove (101) and a second stepped groove (201) matched with the mounting bolt (4).

5. The permanent magnet DC machine housing for an off-highway vehicle of claim 1 wherein: The outer surface of the inner shell (2) is uniformly provided with four groups of reinforcing rib grooves (202), the cross section of the reinforcing rib groove (202) is a semicircular arc, and the inner diameter of the semicircular arc is fifteen millimeters.

6. The permanent magnet DC machine housing for an off-highway vehicle of claim 1, wherein: The material of the mounting bolt (4) is 45 steel, the mounting bolt (4) is subjected to quenching and tempering heat treatment as a whole, and the outer surface of the mounting bolt (4) is subjected to chemical blackening treatment.

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