CN115622313A

CN115622313A - Explosion-proof motor with shockproof function

Info

Publication number: CN115622313A
Application number: CN202211375893.9A
Authority: CN
Inventors: 张成璞; 戴晓迪; 张碧云
Original assignee: Nantong Jeff Electric Co ltd
Current assignee: Nantong Jeff Electric Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-17

Abstract

The invention discloses an explosion-proof motor with a shockproof function, and relates to the technical field of explosion-proof motors. The motor comprises a base, a heat dissipation shell is arranged on the base, a front cover and a rear cover are arranged at one end of the heat dissipation shell, a closed cavity is formed between the front cover and the rear cover, a water-cooling heat dissipation circulation mechanism is arranged on the heat dissipation shell, a spindle penetrating through the front cover is arranged in the closed cavity, a rotor and an electric brush which are located in the heat dissipation shell are arranged on the spindle, the rotor is connected with a slip ring through a current conducting plate, the slip ring is provided with the electric brushes which are symmetrical to each other, a stator located on the outer circumference of the rotor is arranged on the inner side wall of the heat dissipation shell, and a damping mechanism which is located in the heat dissipation shell and connected with the slip ring is arranged on the spindle. According to the invention, by radiating the circulating water in the water-cooling radiating shell, the sealed cavity can achieve the radiating effect of the motor during working under the condition that the explosion-proof safety problem can be solved, and simultaneously, the center offset distance of the main shaft is automatically compensated, the centrifugal vibration of the main shaft is reduced, and the effect of damping in the motor is achieved.

Description

Explosion-proof motor with shockproof function

Technical Field

The invention belongs to the technical field of explosion-proof motors, and particularly relates to an explosion-proof motor with a shockproof function.

Background

The explosion-proof motor is a motor which can be used in flammable and explosive places, and does not generate electric sparks during operation. The explosion-proof motor is mainly used in coal mine, petroleum and natural gas, petrochemical industry and chemical industry. In addition, the method is widely applied to the departments of textile, metallurgy, urban gas, traffic, grain and oil processing, paper making, medicine and the like. Explosion-proof motors are used as main power equipment, and are generally used for driving pumps, fans, compressors, other transmission machines and the like. A large batch of explosion-proof motors are designed in an absolute sealing mode, the purpose of reducing motor noise is achieved, the service life of the explosion-proof motors can be prolonged to a certain extent, but the explosion-proof motors cannot radiate heat timely after being operated for a long time, the service life of the motors can be shortened seriously when the motors are operated in a high-temperature environment, and the motors can be damaged due to the heat accumulated for a long time.

The prior patent discloses an explosion-proof motor with shockproof function of making an uproar, application number CN202021968288.9, through the bearing between motor body rotor and the carousel, can provide the acceleration for the carousel through the rolling friction, the carousel can drive the spoiler and rotate in the inside of breach, make the atmospheric pressure in space between dryer and the motor body outer wall change, cause the inside air current in space between the two to take place to flow, borrow this to take away the heat on the heating panel rapidly, this device utilizes the spoiler structure to solve explosion-proof motor's heat dissipation operating condition, but not isolated sealed, still can have the explosion risk of initiation under the combustible gas dust environment. Most motor vibration among the prior art is at present, the part machining precision that leads to under the manufacturing condition can't guarantee absolute concentricity with the assembly precision, the focus offset can't control the absolute value, and long-time folk prescription is to rotating and must cause eccentric rotation, then produce the quivering of motor center pin, shock-absorbing structure adds and has solved the vibrations problem at the outside flexible mechanical connection with the outside of motor among the prior art, because need inside and outside sealed at explosion-proof machine, avoid the static and the temperature that the electric heat effect produced to explode the combustible substance, consequently, can't make vibrations offset the structure inside the motor, so such explosion-proof machine with shockproof function is urgently needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide an explosion-proof motor with shock-proof function, which has good shock absorption and heat dissipation effects in the motor.

The technical scheme for solving the technical problems is as follows: the motor comprises a base, a heat dissipation shell is arranged on the base, a front cover is arranged at one end of the heat dissipation shell, a rear cover is arranged at the other end of the heat dissipation shell, a closed cavity is formed between the front cover and the rear cover, a water-cooling heat dissipation circulation mechanism communicated with the closed cavity is arranged on the heat dissipation shell, a main shaft penetrating through the front cover is arranged in the closed cavity, a rotor and an electric brush which are located in the heat dissipation shell are arranged on the main shaft, the rotor is connected with a sliding ring through a current conducting plate, electric brushes which are symmetrical to each other are arranged on the sliding ring, a stator located on the outer circumference of the rotor is arranged on the inner side wall of the heat dissipation shell, and a damping mechanism located in the heat dissipation shell and connected with the sliding ring is arranged on the main shaft.

Further, the water-cooling heat dissipation circulation mechanism is as follows: the dustproof shell is arranged on one side of a front cover of the heat dissipation shell, the main shaft is provided with a second gear located in the dustproof shell, the second gear is in meshing transmission with a first gear located in the dustproof shell, the first gear is fixedly connected with one end of a first connecting shaft, the other end of the first connecting shaft is rotatably connected with the water-cooling heat dissipation shell, fan blades located in the water-cooling heat dissipation shell are uniformly arranged on the outer circumference of the first connecting shaft, a water pipe is arranged on the outer circumference of the stator, the water inlet end of the water-cooling heat dissipation shell is communicated with the inlet end of the water pipe, the water outlet end of the water-cooling heat dissipation shell is communicated with the outlet end of the water pipe, and circulating liquid is filled in a closed space formed by the water-cooling heat dissipation shell and the water pipe.

Furthermore, the water pipe is arranged on the circumference of the outer side of the stator in an S-shaped rotary mode.

Further, the damping mechanism is: the slip ring is provided with a first rotary table, the circumferential inner side wall of a center line hole of the first rotary table is provided with two mutually symmetrical fourth gears through second connecting shafts respectively, the two second connecting shafts are connected through a bearing, one end of the main shaft is provided with a third gear which is in meshing transmission with the two fourth gears respectively, the slip ring is provided with a second rotary table for mounting a fifth gear, the fifth gear and the two fourth gears are in meshing transmission respectively, the second rotary table is provided with a damping rotary table, and a centrifugal vibration assembly is uniformly arranged on the damping rotary table in the circumferential direction.

Further, the centrifugal vibration component is: the damping turntable is provided with two fixing plates which are symmetrical to each other, two sides of the two fixing plates are fixedly connected through third connecting shafts respectively, the two third connecting shafts are connected with sliding shafts on two sides of the balancing weight respectively in a sliding mode, the third connecting shafts are provided with two springs, one ends of the two springs are connected with the fixing plates, and the other ends of the two springs are connected with the sliding shafts.

Furthermore, the horizontal center line of the third gear and the horizontal center line of the fifth gear are the same straight line.

The invention has the following beneficial effects:

(1) The water-cooling heat dissipation device adopts the closed space formed by the water-cooling heat dissipation shell and the water pipe, the closed space is filled with circulating liquid to circularly flow in the water-cooling heat dissipation shell and the water pipe, overheated water is cooled through the rotation of the fan blades and the heat dissipation of the water-cooling heat dissipation shell, and therefore the heat dissipation of circulating water passing through the water-cooling heat dissipation shell is realized, and the heat dissipation effect of the motor during the working process can be achieved under the condition that the explosion-proof safety problem can be solved through the closed cavity.

(2) The invention adopts the high-speed running of the main shaft of the motor, the balancing weight can slide on the third connecting shaft through the sliding shaft under the centrifugal action, and the spring can apply reverse force to the balancing weight, thereby automatically compensating the center offset distance of the main shaft, reducing the centrifugal vibration of the main shaft and achieving the effect of damping in the motor.

Drawings

Fig. 1 is a schematic structural view of an embodiment of an explosion-proof motor with a vibration-proof function according to the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a schematic structural diagram of the water-cooling heat dissipation circulation mechanism 1 in fig. 1.

Fig. 5 is a schematic view of the structure of fig. 4 with parts removed.

Fig. 6 is a schematic structural view of the damper mechanism 11 in fig. 3.

Fig. 7 is a schematic view of the structure of fig. 6 with parts removed.

Fig. 8 is a schematic view of the structure of fig. 6 from another angle.

Fig. 9 is a schematic view of the structure of fig. 8 with parts removed.

Reference numerals are as follows: 1. a water-cooling heat dissipation circulation mechanism; 101. a first gear; 102. a water-cooling heat dissipation shell; 103. a water pipe; 104. a second gear; 105. a first connecting shaft; 106. a fan blade; 2. a main shaft; 3. a heat dissipating housing; 4. a front cover; 5. a machine base; 6. a rear cover; 7. a stator; 8. a rotor; 9. a dust-proof shell; 10. an electric brush; 11. a damping mechanism; 1101. a third gear; 1102. a first turntable; 1103. a fourth gear; 1104. a fifth gear; 1105. a second connecting shaft; 1106. a second turntable; 1107. a spring; 1108. a fixing plate; 1109. a balancing weight; 11010. a damping turntable; 11011. a third connecting shaft; 11012. a slide shaft; 12. a conductive plate; 13. and a slip ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, the explosion-proof motor with a vibration-proof function according to the present embodiment is formed by coupling a water-cooling heat-dissipation circulation mechanism 1, a main shaft 2, a heat-dissipation housing 3, a front cover 4, a base 5, a rear cover 6, a stator 7, a rotor 8, brushes 10, a damper mechanism 11, a conductive plate 12, and a slip ring 13.

A heat dissipation shell 3 is fixedly mounted on the base 5 through a threaded fastening connecting piece, a front cover 4 is mounted at one end of the heat dissipation shell 3, a rear cover 6 is mounted at the other end of the heat dissipation shell 3, a closed cavity is formed among the heat dissipation shell 3, the front cover 4 and the rear cover 6, and the explosion-proof safety problem can be solved through the closed cavity. The water-cooling heat dissipation circulation mechanism 1 is mounted on the heat dissipation shell 3, the water-cooling heat dissipation circulation mechanism 1 is communicated with the closed cavity, and when the water-cooling heat dissipation circulation mechanism 1 is used for the motor to work, the heat dissipation shell 3 is the closed cavity, so that the effect of heat dissipation inside the heat dissipation shell 3 is achieved. The main shaft 2 penetrating through the front cover 4 is installed in the closed cavity, the rotor 8 and the electric brushes 10 which are located in the heat dissipation shell 3 are installed on the main shaft 2, the rotor 8 is connected with the slip ring 13 through the conductive plate 12, the electric brushes 10 which are symmetrical to each other are installed on the slip ring 13, the stator 7 which is located on the outer circumference of the rotor 8 is arranged on the inner side wall of the heat dissipation shell 3, the stator 7 in the heat dissipation shell 3 generates a rotating magnetic field, the main shaft 2 rotates, the rotor 8 on the main shaft 2 rotates, and the rotor 8 is cut by magnetic lines of force in the rotating magnetic field to generate current. The rotor 8 transmits current through a conducting plate 12 to brushes 10 on slip rings 13, the brushes 10 serving to redirect the current. The main shaft 2 is provided with a damping mechanism 11 which is positioned in the heat dissipation shell 3 and connected with the slip ring 13, when the main shaft 2 inside the heat dissipation shell 3 rotates, the main shaft 2 has rotational inertia, and the damping mechanism 11 is used for offsetting the rotational inertia of the main shaft 2 inside the motor.

As shown in fig. 4 and 5, the water-cooling heat-dissipation circulation mechanism 1 is formed by connecting a dust-proof case 9, a first gear 101, a water-cooling heat-dissipation case 102, a water pipe 103, a second gear 104, a first connecting shaft 105, and fan blades 106. The water-cooling heat dissipation circulation mechanism 1 is: a dustproof shell 9 is installed on one side of a front cover 4 of a radiating shell 3, a second gear 104 is installed on a main shaft 2, the second gear 104 is located in the dustproof shell 9, the second gear 104 is in meshing transmission with a first gear 101 located in the dustproof shell 9, the first gear 101 is fixedly connected with one end of a first connecting shaft 105, the other end of the first connecting shaft 105 is rotatably connected with a water-cooling radiating shell 102, fan blades 106 are evenly installed on the outer circumference of the first connecting shaft 105, the fan blades 106 are located in the water-cooling radiating shell 102, a water pipe 103 is installed on the outer circumference of a stator 7, and the water pipe 103 is arranged on the outer circumference of the stator 7 in an S-shaped rotating mode. The water inlet end of the water-cooling heat dissipation shell 102 is communicated with the inlet end of the water pipe 103, the water outlet end of the water-cooling heat dissipation shell 102 is communicated with the outlet end of the water pipe 103, and a closed space formed by the water-cooling heat dissipation shell 102 and the water pipe 103 is filled with circulating liquid.

As shown in fig. 6 to 8, the damper mechanism 11 is formed by coupling a third gear 1101, a first rotary plate 1102, a fourth gear 1103, a fifth gear 1104, a second connecting shaft 1105, a second rotary plate 1106, a spring 1107, and a centrifugal vibration component, and the damper mechanism 11 is: the slip ring 13 is provided with a first rotating disc 1102, the circumferential inner side walls of a center line hole of the first rotating disc 1102 are respectively provided with second connecting shafts 1105 which are symmetrical to each other, the two second connecting shafts 1105 are respectively provided with fourth gears 1103, the two second connecting shafts 1105 are connected through bearings, one end of the main shaft 2 is provided with a third gear 1101, the third gear 1101 is in meshing transmission with the two fourth gears 1103, the slip ring 13 is provided with a second rotating disc 1106, the second rotating disc 1106 is provided with a fifth gear 1104, and the horizontal center line of the third gear 1101 and the horizontal center line of the fifth gear 1104 are the same straight line. The fifth gear 1104 is in mesh transmission with the two fourth gears 1103, a damping rotary table 11010 is installed on the second rotary table 1106, and centrifugal vibration assemblies are evenly installed on the damping rotary table 11010 in the circumferential direction.

As shown in fig. 9, the centrifugal vibration component is formed by connecting a fixed plate 1108, a counterweight 1109, a damping turntable 11010, a third connecting shaft 11011 and a sliding shaft 11012, and the centrifugal vibration component is: install two fixed plates 1108 of mutual symmetry on shock attenuation carousel 11010, respectively through third connecting axle 11011 fixed connection between two fixed plate 1108 both sides, balancing weight 1109 both sides fixed mounting has sliding shaft 11012, two third connecting axles 11011 respectively with sliding shaft 11012 sliding connection, sliding shaft 11012 drives balancing weight 1109 and moves on third connecting axle 11011, install two spring 1107 on the third connecting axle 11011, two spring 1107 one end are connected with fixed plate 1108, two spring 1107 other ends and sliding shaft 11012 are connected. Under the centrifugal action, the balancing weight 1109 slides on the third connecting shaft 11011 through the sliding shaft 11012, and the spring 1107 gives the balancing weight 1109 a reverse force, so that the center offset distance of the main shaft 2 is automatically compensated, the centrifugal vibration of the main shaft 2 is reduced, and the effect of damping inside the motor is achieved.

The working principle of the embodiment is as follows:

(1) When the motor is started, the stator 7 in the heat dissipation shell 3 generates a rotating magnetic field, the main shaft 2 rotates, the rotor 8 on the main shaft 2 rotates, the rotor 8 is cut by magnetic lines in the rotating magnetic field to generate current, the rotor 8 transmits the current to the electric brush 10 on the slip ring 13 through the conducting plate 12, and the electric brush 10 is used for changing the direction of the current.

(2) And (3) a water-cooling heat dissipation circulation process: the closed space formed by the water-cooling heat dissipation shell 102 and the water pipe 103 is filled with circulating liquid to flow in the water-cooling heat dissipation shell 102 and the water pipe 103 in a circulating mode, the spindle 2 rotates, the spindle 2 drives the second gear 104 to rotate, the second gear 104 drives the first gear 101 to rotate, the first gear 101 drives the first connecting shaft 105 to rotate, the first connecting shaft 105 drives the fan blades 106 in the water-cooling heat dissipation shell 102 to rotate, overheated water is rotated through the fan blades 106 and the water-cooling heat dissipation shell 102 is used for heat dissipation, circulating water passing through the water-cooling heat dissipation shell 102 is used for heat dissipation, and the heat dissipation effect of the motor during working can be achieved.

(3) The damping working process is as follows: when the main shaft 2 inside the heat dissipation shell 3 rotates, the main shaft 2 has rotational inertia, and the damping mechanism 11 is used for counteracting the rotational inertia of the main shaft 2 inside the motor. When the spindle 2 runs at a high speed, the spindle 2 rotates to drive the third gear 1101 to rotate, the third gear 1101 drives the two fourth gears 1103 on the first rotary table 1102 to rotate respectively, the two fourth gears 1103 drive the fifth gear 1104 to rotate, the fifth gear 1104 drives the second rotary table 1106 to rotate, the second rotary table 1106 drives the damping rotary table 11010 to rotate, the centrifugal vibration component on the damping rotary table 11010 rotates along with the centrifugal vibration component, under the centrifugal action, the counterweight 1109 can slide on the third connecting shaft 11011 through the sliding shaft 11012, and the spring 1107 can provide reverse force for the counterweight 1109, so that the center offset distance of the spindle 2 is automatically compensated, and the centrifugal vibration of the spindle 2 is reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides an explosion-proof machine with shockproof function, is provided with heat dissipation casing (3) on base (5), its characterized in that: the heat dissipation device is characterized in that a front cover (4) is arranged at one end of a heat dissipation shell (3), a rear cover (6) is arranged at the other end of the heat dissipation shell, a closed cavity is formed among the heat dissipation shell (3), the front cover (4) and the rear cover (6), a water-cooling heat dissipation circulating mechanism (1) communicated with the closed cavity is arranged on the heat dissipation shell (3), a main shaft (2) penetrating through the front cover (4) is arranged in the closed cavity, a rotor (8) and an electric brush (10) which are located in the heat dissipation shell (3) are arranged on the main shaft (2), the rotor (8) is connected with a sliding ring (13) through a conductive plate (12), the electric brushes (10) which are symmetrical to each other are arranged on the sliding ring (13), a stator (7) located on the outer circumference of the rotor (8) is arranged on the inner side wall of the heat dissipation shell (3), and a damping mechanism (11) which is located in the heat dissipation shell (3) and connected with the sliding ring (13) is arranged on the main shaft (2).

2. The explosion-proof motor with shock-proof function according to claim 1, wherein the water-cooling heat-dissipation circulation mechanism (1) is: a dustproof shell (9) is arranged on one side of a front cover (4) of a radiating shell (3), a second gear (104) located in the dustproof shell (9) is arranged on a main shaft (2), the second gear (104) is in meshing transmission with a first gear (101) located in the dustproof shell (9), the first gear (101) is fixedly connected with one end of a first connecting shaft (105), the other end of the first connecting shaft (105) is rotatably connected with a water-cooling radiating shell (102), fan blades (106) located in the water-cooling radiating shell (102) are uniformly arranged on the outer circumference of the first connecting shaft (105), a water pipe (103) is arranged on the outer circumference of a stator (7), the water inlet end of the water-cooling radiating shell (102) is communicated with the inlet end of the water pipe (103), the water outlet end of the water-cooling shell (102) is communicated with the outlet end of the water pipe (103), and a closed space formed by the water-cooling shell (102) and the water pipe (103) is filled with circulating liquid.

3. The explosion-proof motor with shock-proof function as claimed in claim 2, wherein said water pipe (103) is provided in an S-shaped revolution around the outer circumference of the stator (7).

4. The explosion-proof motor with shock-proof function according to claim 1, wherein said shock-absorbing mechanism (11) is: a first rotating disc (1102) is arranged on the sliding ring (13), two symmetrical fourth gears (1103) are arranged on the inner side wall of the circumference of a center line hole of the first rotating disc (1102) through second connecting shafts (1105) respectively, the two second connecting shafts (1105) are connected through bearings, a third gear (1101) which is in meshing transmission with the two fourth gears (1103) respectively is arranged at one end of the spindle (2), a second rotating disc (1106) provided with a fifth gear (1104) is arranged on the sliding ring (13), the fifth gear (1104) and the two fourth gears (1103) are in meshing transmission respectively, a damping rotating disc (11010) is arranged on the second rotating disc (1106), and centrifugal vibration assemblies are uniformly arranged on the damping rotating disc (11010) in the circumferential direction.

5. The explosion-proof motor with the shockproof function as claimed in claim 4, wherein the centrifugal shock assembly is: be provided with two fixed plates (1108) of mutual symmetry on shock attenuation carousel (11010), two fixed plate (1108) both sides are respectively through third connecting axle (11011) fixed connection, two third connecting axles (11011) respectively with sliding shaft (11012) sliding connection of the both sides of balancing weight (1109), be provided with two spring (1107) on third connecting axle (11011), two spring (1107) one end are connected with fixed plate (1108), the other end is connected with sliding shaft (11012).

6. The explosion-proof motor with shock-proof function of claim 4, wherein the horizontal center line of the third gear (1101) and the horizontal center line of the fifth gear (1104) are the same straight line.