Motor front shell structure for assembling small rotary transformer

Abstract

The utility model belongs to the technical field of motor shells, and particularly relates to a motor front shell structure for assembling a small rotary transformer. A motor front shell structure for assembling a small rotary transformer comprises a motor front shell, a bearing installation structure is arranged on the motor front shell, and a second installation plate provides an installation position for the rotary transformer; the rotary transformer is arranged on the second mounting plate; the first mounting plate is used for providing a bearing mounting position, and a bearing is arranged on the first mounting plate; due to the fact that the rotary transformer and the bearing are located on the two planes, the thickness of the rotary transformer position non-bearing area and the thickness of the rotary transformer base can be reduced, the material weight is reduced, cost is saved, a cantilever beam structure of the bearing seat is avoided, the overall rigidity of the bearing seat is improved, and transmission and radiation of vibration and noise are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor casing technical field, specifically, the utility model relates to a kind of motor front shell structure for equipping small rotary transformer. BACKGROUND

[0002] Motor casing is an important component of motor system, its main function is to protect internal components, provide mechanical support, and help heat dissipation. Since small rotary transformer is usually used in high-precision measurement occasions, the design of motor casing needs to meet a series of strict requirements. First of all, the selection of casing material is crucial. Commonly used materials include aluminum alloy, stainless steel and engineering plastics, etc. Aluminum alloy is widely used because of its light weight, high strength and good heat dissipation performance. Stainless steel is suitable for environments that require high corrosion resistance, while engineering plastics are suitable for applications with strict weight requirements. Bearing seat is a component in electric drive system used to support and position rotating shaft, its main function is to ensure smooth operation and precise positioning of rotating shaft. The design of bearing seat directly affects the accuracy and service life of transformer. Bearing seat usually uses high-precision ball bearings or sliding bearings. Ball bearings are widely used because of their low friction coefficient, smooth operation and long service life. However, in some occasions that require ultra-high precision and noiseless operation, sliding bearings may be more suitable.

[0003] Chinese patent (publication number: 112039258A) discloses a new type of tubular motor bearing seat, by connecting the T-shaped clamping groove and T-shaped clamping plate on the seat body and outer shaft ring, the first T-shaped clamping plate on the seat body and the second T-shaped clamping plate on the outer shaft ring can be used to connect the seat body and the outer shaft ring, and the T-shaped clamping plate is fixed in two directions, which improves the connection stability of the seat body and the outer shaft ring, and facilitates the replacement of bearings.

[0004] However, the existing bearing seat and rotary transformer seat are prone to cantilever beam structure, which is not conducive to use. UTILITY MODEL CONTENTS

[0005] The utility model is to solve the above-mentioned problems, the purpose is to provide a kind of motor front shell structure for equipping small rotary transformer, bearing seat structure is more reasonable, can reduce cantilever beam feature.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme: a kind of motor front shell structure for equipping small rotary transformer, characterized by comprising motor front casing, bearing mounting structure is arranged on the motor front casing.

[0007] The bearing mounting structure comprises a bearing mounting hole, the motor front shell comprises a first circular plate, the bearing mounting hole is arranged on the first circular plate, a first mounting plate and a second mounting plate are arranged in the bearing mounting hole, the second mounting plate is located at the bottom of the bearing mounting hole, and the first circular plate is connected with a first protection wall.

[0008] A first annular groove is formed in the first circular plate, the first annular groove is arranged on the side away from the bearing mounting hole, and a first reinforcing rib is arranged in the first annular groove.

[0009] A first groove is formed in the first circular plate, the first groove is arranged on the side of the bearing mounting hole, a first through groove is arranged between the first groove and the bearing mounting hole, and a first connecting plate is connected in the first through groove.

[0010] A lubricating oil pipeline is arranged in the bearing mounting hole, one end of the lubricating oil pipeline is connected with a connecting pipeline, the connecting pipeline is arranged on one side of the first annular groove, and one end of the connecting pipeline is arranged on the first protection wall.

[0011] A second reinforcing rib is arranged in the first groove.

[0012] The first reinforcing rib is circumferentially symmetrically distributed in the first annular groove, the second reinforcing rib is circumferentially symmetrically distributed in the first groove, and the connecting positions of the first reinforcing rib and the second reinforcing rib on the first circular plate correspond.

[0013] A second connecting plate is arranged on the first protection wall, and a threaded hole is formed in the second connecting plate.

[0014] The second connecting plate is in a semicircular structure, the second connecting plate is circumferentially symmetrically distributed, and the first connecting plate is provided with at least one.

[0015] The depth of the first annular groove satisfies d+30%*e≤f≤d+70%*e.

[0016] The technical effect of the utility model is that the first circular plate provides a plane for mounting the bearing mounting hole and serves as a support base of the overall structure. The bearing mounting hole is used to provide a bearing mounting position, and the lubricating oil pipeline is connected with the bearing. The first protection wall is used to protect the internal structure from damage and to isolate dust from the outside, preventing the internal structure from being contaminated. The second mounting plate provides a resolver mounting position. The resolver is arranged on the second mounting plate. The first mounting plate is used to provide a bearing mounting position, and the bearing is arranged on the first mounting plate. Since the resolver and the bearing are respectively located on two planes, the resolver position is a non-load-bearing area, the thickness of the resolver base can be reduced, the material weight is reduced, the cost is saved, the cantilever beam structure of the bearing seat is avoided, the overall stiffness of the bearing seat is improved, and the transmission and radiation of vibration and noise are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present specification includes the following drawings, the contents shown are respectively:

[0018] Fig. 1 It is a kind of motor front shell structure front whole structure schematic diagram for equipping small rotary transformer of the utility model;

[0019] Fig. 2 It is a kind of motor front shell structure back whole structure schematic diagram for equipping small rotary transformer of the utility model;

[0020] Fig. 3 It is a kind of motor front shell structure section view for equipping small rotary transformer of the utility model;

[0021] Fig. 4 It is a kind of bearing mounting structure local size schematic diagram for equipping small rotary transformer of the utility model motor front shell structure.

[0022] Marked as in the figure: 1, motor front shell body;101, first round plate;102, first protection wall;2, bearing mounting structure;201, bearing mounting hole;202, lubricating oil pipeline;203, first ring type slot;204, first reinforcing rib;205, first slot;206, first connecting plate;207, first through slot;208, first mounting plate;209, second mounting plate;3, connecting pipeline;4, second reinforcing rib;5, second connecting plate;6, threaded hole. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application are further described in detail below with reference to the drawings and by describing the embodiments, the purpose is to help the skilled in the art to have more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application, and to help its implementation.

[0024] As Figs. 1-3 As shown in a kind of motor front shell structure for equipping small rotary transformer, including motor front shell body 1, bearing mounting structure 2 is provided on motor front shell body 1.The motor front shell body 1 is the basis of entire bearing seat structure 2, provides the main body of installation and support other components.Structure for installing bearing, ensure that bearing can be correctly fixed and aligned.

[0025] The bearing mounting structure 2 comprises a bearing mounting hole 201, the motor front shell 1 comprises a first circular plate 101, the bearing mounting hole 201 is arranged on the first circular plate 101, a first mounting plate 208 and a second mounting plate 209 are arranged in the bearing mounting hole 201, and the first mounting plate 208 and the second mounting plate 209 are annular plates; the second mounting plate 209 is located at the bottom of the bearing mounting hole 201, and the first circular plate 101 is connected with a first protective wall 102. The first circular plate 101 provides a plane for mounting the bearing mounting hole 201, and the second mounting plate 209 provides a resolver mounting position; the resolver is arranged on the second mounting plate 209; the first mounting plate 208 is used for providing a bearing mounting position, and the bearing is arranged on the first mounting plate 208. The first protective wall 102 is used for protecting the internal structure from being damaged and also isolating dust outside, so that the internal structure is prevented from being polluted. Since the resolver and the bearing are not located in the same plane, the resolver position is a non-bearing area, the thickness of the resolver base can be reduced, the material weight is reduced, the cost is saved, and the cantilever beam structure of the bearing seat is avoided.

[0026] A first annular groove 203 is formed in the first circular plate 101, the first annular groove 203 is arranged on a side away from the bearing mounting hole 201, and a first reinforcing rib 204 is arranged in the first annular groove 203. The first reinforcing rib 204 can strengthen the strength of the inside of the first annular groove 203, and the first annular groove 203 can reduce the weight of the structure itself and save materials.

[0027] A first groove 205 is formed in the first circular plate 101, the first groove 205 is located on a side of the bearing mounting hole 201, a first through groove 207 is arranged between the first groove 205 and the bearing mounting hole 201, and a first connecting plate 206 is connected in the first through groove 207. The first groove 205 can save materials and reduce the weight of the structure as a whole, the first through groove 207 penetrates the first circular plate 101, the first through groove 207 provides a mounting position for the first connecting plate 206, the first through groove 207 is used for arranging a resolver wire harness, and the first connecting plate 206 is used for strengthening the strength of the first through groove 207.

[0028] A lubricating oil pipeline 202 is arranged in the bearing mounting hole 201, one end of the lubricating oil pipeline 202 is connected with a connecting pipeline 3, the connecting pipeline 3 is located on one side of the first annular groove 203, and one end of the connecting pipeline 3 is arranged on the first protective wall 102. The connecting pipeline 3 is used for conveying oil to the lubricating oil pipeline 202, and the bearing can be lubricated through the lubricating oil.

[0029] A second reinforcing rib 4 is arranged in the first groove 205. The second reinforcing rib 4 is used for strengthening the connecting strength of the first groove 205, so that the structure of the first groove 205 is more stable.

[0030] The first reinforcing ribs 204 are distributed in the first annular groove 203 in a circumferential symmetry, and the second reinforcing ribs 4 are distributed in the first groove 205 in a circumferential symmetry. The first reinforcing ribs 204 and the second reinforcing ribs 4 are connected at corresponding positions on the first circular plate 101. The circumferential symmetry of the first reinforcing ribs 204 can prevent stress concentration and make the structure of the first annular groove 203 more stable. The circumferential symmetry of the second reinforcing ribs 4 can make the structure of the first groove 205 more stable and prevent stress concentration. The corresponding connection of the first reinforcing ribs 204 and the second reinforcing ribs 4 at the positions on the first circular plate 101 can make the structure of the bearing seat 2 more stable and stronger.

[0031] The first protective wall 102 is provided with a second connecting plate 5, and the second connecting plate 5 is provided with a threaded hole 6. The second connecting plate 5 and the threaded hole 6 are used for installing and fixing the motor front shell 1.

[0032] The second connecting plate 5 is in a semicircular structure and is distributed in a circumferential symmetry. The semicircular structure of the second connecting plate 5 can prevent sharp structures from scratching the user, and the circumferential symmetry of the second connecting plate 5 can strengthen the connection and fixation of the motor front shell 1 and also avoid stress concentration.

[0033] The first connecting plate 206 is provided with at least one. The provision of multiple first connecting plates 206 can make the first through groove 207 more stable and stronger.

[0034] The depth of the first annular groove 203 satisfies: d+30%*e≤f≤d+70%*e. Wherein f is the depth of the first annular groove 203; d is the distance from the first mounting plate 208 to the bottom of the bearing mounting hole 201; e is the distance from the first mounting plate 208 to the top of the bearing mounting hole 201, e is the effective support height of the bearing seat, which can more effectively support the bearing within this range.

[0035] Effects of the embodiment

[0036] The motor front shell 1 is the base of the whole bearing seat structure 2, which provides the main body for mounting and supporting other components. The structure for mounting the bearing ensures that the bearing can be fixed and aligned correctly. The bearing mounting hole 201 is used to provide the bearing mounting position, and the lubricating oil pipeline 202 can deliver lubricating oil into the bearing mounting hole 201. The first protection wall 102 is used to protect the internal structure from being damaged and also to isolate dust, preventing the internal structure from being contaminated; the second mounting plate 209 provides the position for mounting the rotary transformer; the rotary transformer is arranged on the second mounting plate 209; the first mounting plate 208 is used to provide the bearing mounting position, and the bearing is arranged on the first mounting plate 208. Since the rotary transformer and the bearing are respectively arranged on two planes, the non-load area of the rotary transformer position, the thickness of the rotary transformer base can be reduced, the material weight is reduced, the cost is saved, the cantilever beam structure of the bearing seat is avoided, the overall stiffness of the bearing seat is improved, and the transmission and radiation of vibration and noise are reduced.

[0037] The utility model is described above with reference to the drawings. Obviously, the utility model is not limited by the above method. As long as various non-essential improvements are made by using the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A motor front housing structure for equipping a small resolver, characterized by, The application relates to a motor front shell (1) provided with a bearing mounting structure (2), wherein the bearing mounting structure (2) comprises a bearing mounting hole (201), the motor front shell (1) comprises a first circular plate (101), the bearing mounting hole (201) is arranged on the first circular plate (101), a first mounting plate (208) and a second mounting plate (209) are arranged in the bearing mounting hole (201), the second mounting plate (209) is located at the bottom of the bearing mounting hole (201), and the first circular plate (101) is connected with a first protection wall (102).

2. An electric machine front housing structure for equipping a small rotary transformer according to claim 1, characterized in that: A first annular groove (203) is formed in the first circular plate (101), the first annular groove (203) is arranged on the side away from the bearing mounting hole (201), and a first reinforcing rib (204) is arranged in the first annular groove (203).

3. An electric machine front housing structure for equipping a small rotary transformer according to claim 2, characterized in that: A first groove (205) is formed in the first circular plate (101), the first groove (205) is located on the side of the bearing mounting hole (201), a first through groove (207) is arranged between the first groove (205) and the bearing mounting hole (201), and a first connecting plate (206) is connected in the first through groove (207).

4. A motor front housing structure for equipping a small rotary transformer according to claim 2, characterized in that: A lubricating oil pipeline (202) is arranged in the bearing mounting hole (201), one end of the lubricating oil pipeline (202) is connected with a connecting pipeline (3), the connecting pipeline (3) is located on the side of the first annular groove (203), and one end of the connecting pipeline (3) is arranged on the first protection wall (102).

5. A motor front housing structure for equipping a small rotary transformer according to claim 3, characterized in that: A second reinforcing rib (4) is arranged in the first groove (205).

6. An electric machine front housing structure for equipping a small rotary transformer according to claim 5, characterized in that: The first reinforcing rib (204) is circumferentially symmetrically distributed in the first annular groove (203), the second reinforcing rib (4) is circumferentially symmetrically distributed in the first groove (205), and the first reinforcing rib (204) and the second reinforcing rib (4) are connected at corresponding positions on the first circular plate (101).

7. A motor front housing structure for equipping a small rotary transformer according to claim 3, characterized in that: A second connecting plate (5) is arranged on the first protection wall (102), and the second connecting plate (5) is provided with a threaded hole (6).

8. An electric machine front housing structure for equipping a small rotary transformer according to claim 7, characterized in that: The second connecting plate (5) is in a semicircular structure and is circumferentially symmetrically distributed, and the first connecting plate (206) is provided with at least one.

9. A motor front housing structure for equipping a small rotary transformer according to claim 3, characterized in that: The depth of the first annular groove (203) satisfies the condition d+30%*e<=f<=d+70%*e.

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