CN212435494U

CN212435494U - Water channel sealing structure of motor

Info

Publication number: CN212435494U
Application number: CN202021084362.0U
Authority: CN
Inventors: 徐明振; 刘平宙; 任华林; 谢小兵; 何嘉伟; 李元凤; 陆江燕
Original assignee: Zhejiang Wanliyang New Energy Drive Co ltd
Current assignee: Zhejiang Wanliyang New Energy Drive Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-01-29
Anticipated expiration: 2030-06-12

Abstract

The utility model aims at providing a motor water course seal structure that the leakproofness is good, low in production cost. In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a motor water course seal structure, includes motor casing, motor casing is including shell body and the interior casing of establishing each other cover, interior casing and shell body cross-section all are the annular setting, interior casing circumference outer wall indent has the water course in order to constitute, shell body front end circumference inner wall all extends in order to be formed with and is annular interior boss to circumference inboard, interior casing rear side is fixed with the closing plate, be formed with the annular groove before the closing plate on terminal surface or the interior casing rear end face, be equipped with first sealing washer in the annular groove, and first sealing washer circumference outer wall contacts with shell body circumference inner wall, interior boss is scribbled sealed glue on axial rear end face or the preceding terminal surface of interior casing, and interior casing is fixed so that sealed glue is restricted between boss axial rear end face and the preceding terminal surface of.

Description

Water channel sealing structure of motor

Technical Field

The utility model relates to a water-cooling gear motor, concretely relates to motor water course seal structure.

Background

According to the existing sealing structure for the motor water channel, a motor shell is made of aluminum alloy materials, an extrusion forming process is used, and metal sealing gaskets are fixed at two ends of the motor shell through a welding process to form an axial water channel. When the motor water channel is sealed, the gap between the sealing gasket and the notch of the water channel needs to be welded in a laminated mode for many times, welding materials are wasted, welding quality is poor, the gap is prone to occurring, cooling liquid in the water channel is leaked, welding labor cost is high, and large-scale production is not prone to occurring.

In another existing motor water channel sealing structure, a motor shell is cast by gravity or a pressure casting process. The shell material cast by gravity has low density, easy water leakage, low casting yield, complex process, low efficiency, sand leakage holes needing to be processed and the plugs needing to be installed and the like; the pressure casting motor shell is adopted, the internal closed circulating water channel cannot be cast, air holes are easily generated, and the air tightness of the motor shell cannot pass through.

Disclosure of Invention

The utility model aims at providing a motor water course seal structure that the leakproofness is good, low in production cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a water channel sealing structure of a motor comprises a motor shell, wherein the motor shell comprises an outer shell and an inner shell which are sleeved with each other, the sections of the inner shell and the outer shell are both arranged in a ring shape, the circumferential outer wall of the inner shell is inwards concave to form a water channel, the circumferential inner wall of the front end of the outer shell extends towards the circumferential inner side to form an annular inner boss, a sealing plate is fixed at the rear side of the inner shell, an annular groove is formed on the front end surface of the sealing plate or the rear end surface of the inner shell, a first sealing ring is arranged in the annular groove, and first sealing washer circumference outer wall contacts with shell body circumference inner wall, scribble sealed glue on interior boss axial rear end face or the preceding terminal surface of interior casing, interior casing is fixed so that sealed glue is restricted including between boss axial rear end face and the preceding terminal surface of interior casing, and interior casing circumference outer wall and shell body circumference inner wall interference fit.

Carry out the utility model discloses during motor assembly, place shell body or interior casing in the oven heating, take out after keeping warm a period, scribble sealed glue on the boss axial rear end face or interior casing preceding terminal surface afterwards, carry out the alignment and the pressure equipment of interior casing and shell body at last to realize the sealed of water course front end and realize simultaneously the fixing between interior casing and exterior casing through sealed glue, realize the sealed of water course rear end through closing plate and first sealing washer at last, easy operation, the cost is lower. Because the interior casing of motor casing and shell body are two spare parts of mutual independence, interior casing can adopt aluminum alloy material to make, and the shell body can adopt cast iron to the pressure equipment tight fit between them, and avoid the production of interior casing upper air vent, so that the sealed effect of water course is better.

Preferably, a reducer casing is arranged on the front side of the motor casing, an annular bulge extending towards the rear side is arranged on the rear end face of the reducer casing, the reducer casing is fixed to the motor casing, so that the inner boss is sleeved on the circumferential outer side of the annular bulge, the front end face of the outer casing is in contact with the rear end face of the reducer casing, a second sealing ring is fixed between the axial rear end face of the annular bulge and the front end face of the inner casing, and the circumferential outer wall of the second sealing ring is in contact with the circumferential inner wall of the inner flange of the outer casing. The second sealing ring is used for double sealing at the front end of the water channel so as to improve the sealing effect.

Preferably, the axial rear end face of the annular protrusion comprises a first annular face, a second annular face and a third annular face from outside to inside in sequence, the first annular face and the third annular face are inclined faces, the second annular face is a plane, the outer diameter of the first annular face is gradually reduced from front to back along the axial direction, and the inner diameter of the third annular face is gradually increased from front to back along the axial direction. After the reducer shell is fixed with the motor shell, the second sealing ring is compressed tightly and deformed by the annular bulge, so that the part of the second sealing ring, which is close to the inner shell and the outer shell, can be expanded, and the sealing effect at the front end of the water channel is better.

Preferably, the inner shell is recessed circumferentially to form a channel in the shape of a spiral. The arrangement enables the area of the water channel to be larger, so that the heat dissipation effect is improved.

The utility model has the advantages of good sealing performance and low production cost.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a schematic structural diagram of the first sealing ring according to the present invention;

fig. 3 is a schematic structural diagram of the second sealing ring according to the present invention.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

As shown in figures 1 to 3, the utility model discloses a water channel sealing structure of a motor, which comprises a motor shell, wherein the motor shell comprises an outer shell 1 and an inner shell 2 which are sleeved with each other, the sections of the inner shell 2 and the outer shell 1 are both arranged in an annular shape, the circumferential outer wall of the inner shell 2 is inwards concave to form a water channel 21, the circumferential inner wall at the front end of the outer shell 1 extends towards the circumferential inner side to form an annular inner boss 11, a sealing plate 3 is fixed at the rear side of the inner shell 2, an annular groove 22 is formed on the rear end surface of the inner shell 2, a first sealing ring 23 is arranged, and first sealing washer 23 circumference outer wall contacts with 1 circumference inner wall of shell body, scribbles sealed glue on the axial rear end face of interior boss 11, and interior casing 2 is fixed so that sealed glue is restricted including between 11 axial rear end faces of boss and the preceding terminal surface of interior casing 2 with

shell body

1, and 2 circumference outer walls of interior casing and 1 circumference inner wall interference fit of shell body. Wherein the water channel 21 is spiral.

The motor casing front side is equipped with retarder casing 4, retarder casing 4 rear end face is equipped with the annular bulge 41 that extends to the rear side, retarder casing 4 is fixed with the motor casing to make interior boss 11 cover establish the annular bulge 41 circumference outside and make the preceding terminal surface of shell body 1 and retarder casing 4 rear end face contact, annular bulge 41 axial rear end face and interior casing 2 preceding terminal surface within a definite time be fixed with second sealing washer 42, and the contact of second sealing washer 42 circumference outer wall and shell body interior flange 11 circumference inner wall.

The axial rear end face of the annular protrusion 41 sequentially comprises a first annular face 43, a second annular face 44 and a third annular face 45 from outside to inside, the first annular face 43 and the third annular face 45 are inclined faces, the second annular face 44 is a plane, the outer diameter of the first annular face 43 is gradually reduced from front to back along the axial direction, and the inner diameter of the third annular face 45 is gradually increased from front to back along the axial direction.

Carry out the utility model discloses during the assembly, scribble sealed glue on the convex rear end face in the shell body of motor, carry out the pressure equipment of shell body and interior casing afterwards, place the second sealing washer including the casing front side afterwards to it is fixed with the fastener of shell body to carry out the reduction gear casing, through the fastening bolt who screws up the fastener in order to compress tightly the second sealing washer and make the second sealing washer warp, including casing rear side fixed seal board and first sealing washer afterwards. Wherein, the outer casing is cast iron, and the inner casing adopts the aluminum alloy to make.

Claims

1. A water channel sealing structure of a motor is characterized by comprising a motor shell, wherein the motor shell comprises an outer shell and an inner shell which are sleeved with each other, the sections of the inner shell and the outer shell are both arranged in a ring shape, the circumferential outer wall of the inner shell is inwards concave to form a water channel, the circumferential inner wall of the front end of the outer shell extends towards the circumferential inner side to form an annular inner boss, a sealing plate is fixed at the rear side of the inner shell, an annular groove is formed on the front end surface of the sealing plate or the rear end surface of the inner shell, a first sealing ring is arranged in the annular groove, and first sealing washer circumference outer wall contacts with shell body circumference inner wall, scribble sealed glue on interior boss axial rear end face or the preceding terminal surface of interior casing, interior casing is fixed so that sealed glue is restricted including between boss axial rear end face and the preceding terminal surface of interior casing, and interior casing circumference outer wall and shell body circumference inner wall interference fit.

2. The water channel sealing structure of the motor according to claim 1, wherein a decelerator casing is provided at a front side of the motor casing, a rear end surface of the decelerator casing is provided with an annular protrusion extending to a rear side, the decelerator casing is fixed to the motor casing such that the inner boss is fitted around a circumferential outer side of the annular protrusion and a front end surface of the outer casing is in contact with the rear end surface of the decelerator casing, a second sealing ring is fixed between a rear axial end surface of the annular protrusion and the front end surface of the inner casing, and a circumferential outer wall of the second sealing ring is in contact with a circumferential inner wall of the inner boss of the outer.

3. The motor water channel sealing structure according to claim 2, wherein the axial rear end surface of the annular protrusion sequentially includes a first annular surface, a second annular surface and a third annular surface from outside to inside, the first annular surface and the third annular surface are inclined surfaces, the second annular surface is a plane, an outer diameter of the first annular surface gradually decreases from front to back in the axial direction, and an inner diameter of the third annular surface gradually increases from front to back in the axial direction.

4. The motor water channel sealing structure according to claim 1, wherein the inner housing is recessed circumferentially at an outer wall thereof to form a water channel in a spiral shape.