CN106208509A - A kind of exempt from double flange vertical vibrating motors that bolt is fixing - Google Patents

Abstract

A bolt-free double-flange vertical vibration motor relates to a vibration motor. The invention includes a machine base, end covers with bearing chambers arranged on both sides of the machine base, a stator arranged in the machine base, a rotor with a rotating shaft matched with the stator, a bearing arranged in the bearing chamber of the end cover, and a The eccentric blocks on the rotating shafts on both sides, the rotor is connected to the end cover through the bearings that are sleeved on the rotating shaft. The connecting end of the seat protrudes to the outer periphery to form a connecting flange for connecting and fixing with external equipment. The outer peripheral surface of the connecting flange is a tapered surface, and one end of the connecting flange is the connecting end matching the machine base. The diameter of one end is larger than that of the other end so that the motor is pressed and fixed by an external device having an inner tapered surface matched with the tapered surface. The technical solution is convenient to process and fix, has good positioning accuracy, is beneficial to improving product life and protection level, and is easy to maintain.

Description

A bolt-free double-flange vertical vibration motor

technical field

The invention relates to a vibration motor, in particular to a bolt-free double-flange vertical vibration motor.

Background technique

With the rapid development of industry, there are more and more various demands in the field of domestic vibrating screening, and the diversified demands for vibrating motors are increasing. Double-flange vertical vibrating motors are the main products of high-power vertical vibrating motors Representative, widely used in casting, refractory materials, light industry and other large-scale rotary vibration equipment, such as rotary vibration screening machine, rotary vibration mill, currently there are very few domestic mature products, and the product life is short, maintenance is difficult, and the protection level is not high .

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to improve and improve the existing technical solutions, and to provide a double-flange vertical vibration motor without bolts, so as to improve the convenience of installation and maintenance and the protection ability. Purpose. For this reason, the present invention takes the following technical solutions.

A bolt-free double-flange vertical vibration motor, comprising a machine base, end covers with bearing chambers inside the machine base, a stator inside the machine base, a rotor with a rotating shaft matching the stator, The bearings located in the bearing chamber of the end cover and the eccentric blocks on the rotating shaft on both sides of the machine base, the rotor is rotatably connected with the end cover through the bearings that are sleeved on the rotating shaft, and it is characterized in that: one end of the end cover is The connecting end of the base that matches the base, the connecting end of the base protrudes to the outer periphery to form a connecting flange for connecting and fixing with external equipment, the outer peripheral surface of the connecting flange is a tapered surface, and one end of the connecting flange is a The diameter of the connecting end of the connecting flange is larger than the diameter of the other end so that the motor is pressed and fixed by an external device with an inner tapered surface matching the tapered surface. The tapered surface with a slope and the inner tapered surface of the external equipment are pressed and fixed, and can be directly fixed without using bolts, which is convenient for processing and fixing. The positioning accuracy is good, which is beneficial to improve the product life and protection level, and is easy to maintain.

As a further improvement and supplement to the above technical solutions, the present invention also includes the following additional technical features.

The junction box is located on the top of the machine base, and one side of the junction box is provided with a vertically upward cable connector for connecting external cables, and the cable connector is connected with the terminal board provided in the junction box to realize the motor The "Y" or "△" type connection, the junction box is potted with resin. The terminal board can easily support the "Y" or "△" motor connection structure by changing the connection mode. The resin potting and sealing effect through the junction box is very good, and the direction of the cable joint is vertically upward, so that the junction box does not As far as affecting the cable joint

The machine base is connected to the end cover by fitting the outer spigot provided thereon with the inner spigot of the end cover, and a sealing ring for sealing is provided on the mating surface. It has a good sealing effect through the seam fitting and the sealing ring is arranged on the mating surface.

An annular groove is provided on the rotor shaft outside the end cover, and an elastic V-shaped sealing ring is embedded in the annular groove, and the V-shaped sealing ring includes elastic interference with the circumferential surface of the annular groove. The matched inner ring of the main body and the sealing lip elastically close to the outer end surface of the top of the end cover, there is a connection gap between the end cover and the rotor shaft, and the sealing lip covers the connection gap. The setting of the V-shaped sealing ring prevents foreign matter such as dust from entering the end cover during the operation of the motor.

The outer peripheral wall of the end cover is evenly distributed with a plurality of axially arranged reinforcing ribs. The reinforcing ribs are triangular in shape, and their high ends are connected to the connecting flange. The length of the reinforcing ribs is less than the length of the end cover. The opposite end of the base connecting end of the cover forms a clamping portion without reinforcing ribs. The ribs can enhance the structural stability of the end cover and the connecting flange, and reduce the clamping deformation of the bearing chamber during processing. The setting of the clamping distance facilitates the processing of the end cover.

The length range of the clamping part is 15-20mm. The clamping distance is greater than the wall thickness between the top outer end surface of the end cover and the bearing chamber, the thickness is suitable, the clamping is convenient, and the processing is convenient.

The top outer surface of the end cover is provided with an axially penetrating threaded hole so that the screw enters the bearing chamber from the outside of the end cover through the threaded hole and pushes the bearing out of the end cover. The setting of the axially penetrating threaded hole facilitates the use of screws to eject the bearing from the bearing chamber.

The bearing includes an inner end face of the bearing attached to the inner end face of the top end cover of the bearing chamber and an outer end face of the bearing located on the side where the bearing is pressed into the bearing chamber. The outer side of the bearing cap is provided with a circlip, the outer side of the bearing cap and the circlip is provided with a circlip, and the outer peripheral surface of the circlip is embedded in the bearing In the concave ring groove of the side wall of the chamber. Through the arrangement of the bearing cover, the elastic wave retaining ring and the elastic retaining ring, the leakage of grease can be effectively prevented, and the sealing effect is good.

The outer end surface of the bearing is pressed with a ring-shaped bearing retaining ring, which is arranged in the center hole of the bearing cover, and two retaining springs are arranged at the connection between the outer peripheral surface of the rotor shaft and the bearing According to the thickness specifications of the bearing, an elastic circlip for the shaft is selectively embedded in one of the circlip grooves, so that the elastic circlip for the shaft is laterally pressed against the annular bearing retaining ring. Through the setting of two snap ring grooves, two bearings with different thickness specifications can be used to meet the needs of different loads of the motor and reduce the cost of the motor.

A labyrinth seal structure is provided between the shaft outlet hole at the top of the end cover and the rotor shaft, and the labyrinth seal structure includes a plurality of labyrinth grooves on the inner peripheral surface of the shaft outlet hole of the end cover and the labyrinth grooves on the rotor shaft. Corresponding to the protrusion, the matching gap between the end cover and the rotor shaft is between 0.35mm and 0.5mm. The labyrinth seal structure can effectively prevent a large amount of bearing grease from flowing out, prolong the maintenance cycle of adding and replacing bearing grease, and achieve the purpose of maintenance-free.

Beneficial effect:

The flange is connected through the tapered surface, and it can be fixed directly with the external equipment through the tapered surface without using bolts, which simplifies the installation method.

Through a series of sealing structures, the protection ability of the motor is improved, the probability of oil leakage is reduced, and the maintenance cycle of replacing bearing grease is extended.

Through the setting of two snap ring grooves, two bearings with different thickness specifications can be used to meet the needs of different loads of the motor and reduce the cost of the motor.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the present invention.

Fig. 2 is a schematic diagram of the structure of the end cap of the present invention.

FIG. 3 is a schematic diagram of an enlarged structure of part A of FIG. 1 .

FIG. 4 is a schematic diagram showing the enlarged structure of part B in FIG. 1 .

In the figure: 1-frame; 2-stator; 3-rotor; 301-rotor shaft; 302-circlip groove; 4-end cover; 401-connecting flange; 402-ring groove; 403-reinforcing rib; 404 - threaded hole; 405- labyrinth groove; 406- conical surface; 5- bearing; 6- wiring board; 7- cable connector; 8- O-ring; 9- V-ring; Elastic wave retaining ring; 12-retaining ring; 13-shaft retaining ring; 14-circular bearing retaining ring; 15-junction box.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-4, it includes a machine base 1, an end cover 4 with bearing chambers inside the machine base 1, a stator 2 inside the machine base 1, and a rotor with a rotating shaft 301 matching the stator 2. 3. The bearing 5 located in the bearing chamber of the end cover 4, the eccentric block 301 on the rotating shaft located on both sides of the machine base 1, the rotor 3 is rotationally connected with the end cover 4 through the bearing 5 outside the rotating shaft 301, and the feature is that the end cover 4. One end is the connecting end of the machine base matching with the machine base 1. The connecting end of the machine base protrudes to the outer periphery to form a connecting flange 401 for connecting and fixing with external equipment. The outer peripheral surface of the connecting flange 401 is a tapered surface 406. One end of the flange 401 is a connection end matched with the base 1, and the diameter of the connection end of the connection flange 401 is larger than the diameter of the other end so that the motor is pressed and fixed by an external device having an inner tapered surface matching the tapered surface 406 . The tapered surface with a slope is pressed and fixed with the inner tapered surface of the external device, and can be directly fixed without using bolts. Easy to assemble.

In order to achieve a better wiring effect, the junction box 15 is arranged on the top of the machine base 1, and one side of the junction box 15 is provided with a vertically upward cable joint 7 for connecting external cables. The provided wiring board 6 is connected, and the wiring board 6 supports a "Y" or "△" motor connection structure, and the junction box 10 is potted with resin. The terminal board can easily support the "Y" or "△" motor connection structure by changing the connection mode. The sealing effect of the resin potting through the junction box 10 is very good. The cable joint 7 will not be affected during sealing.

In order to obtain a good sealing effect, the machine base 1 and the end cover 4 are fitted together by the outer seam of the machine base 1 and the inner seam of the end cover 4, and an O-ring 8 for sealing is provided on the mating surface. It has a good sealing effect through the seam fitting and the sealing ring is arranged on the mating surface.

In order to achieve a better dustproof effect, an annular groove 402 is provided on the rotor shaft 301 outside the top end surface of the end cover 4, and an elastic V-shaped sealing ring 9 is embedded in the annular groove 402. The V-shaped sealing ring 9 includes a The inner ring of the main body with elastic interference fit on the circumferential surface of the annular groove 402 and the sealing lip elastically close to the outer end surface of the top of the end cover 4 , the sealing lip covers the connecting gap between the end cover 4 and the rotor shaft 301 . The setting of the V-shaped sealing ring 9 prevents foreign matter such as dust from entering the end cover 4 during the operation of the motor.

In order to enhance the clamping stability of the end cover 4 and reduce the deformation caused by clamping, eight reinforcement ribs 403 are evenly distributed around the axial direction on the outer peripheral wall of the end cover 4. The reinforcement ribs 403 are triangular in shape, and their high ends are connected to the connecting flange 401. , the length of the reinforcing rib 403 is less than the length of the end cover 4 , and a clamping portion without the reinforcing rib 403 is formed at the opposite end of the connecting end of the machine base of the end cover 4 . The ribs 403 can enhance the structural stability of the end cover 4 and the connecting flange 401 , reduce the clamping deformation of the bearing chamber during processing, and the setting of the clamping distance facilitates the processing of the end cover 4 .

In order to facilitate clamping, the clamping distance is greater than the wall thickness between the top outer end surface of the end cover 4 and the bearing chamber, and the clamping distance is 18mm. Appropriate thickness, convenient clamping, and easy processing.

In order to eject the bearing 5 out of the bearing chamber conveniently, an axially penetrating threaded hole 404 is provided on the top outer surface of the end cover 4 , and the threaded hole 404 can push the bearing 5 out of the end cover 4 after being screwed into a bolt from the outside of the end cover 4 . The setting of the axially penetrating threaded hole 404 facilitates the use of screws to eject the bearing 5 from the bearing chamber.

In order to prevent grease from leaking out and improve the sealing effect, the bearing 5 includes the inner end face of the bearing attached to the inner end face of the top end cover 4 of the bearing chamber and the outer end face of the bearing located on the side where the bearing chamber is pressed into the bearing 5. The outer end face of the bearing is provided with a Protect the bearing 5 and the bearing cover 10 to prevent the loss of grease. The outer side of the bearing cover 10 is provided with an elastic circlip 11. The outer side of the bearing cover 10 and the elastic circlip 11 is provided with an elastic circlip 12. The outer circumference of the elastic circlip 12 The surface is embedded in the inner concave ring groove of the side wall of the bearing chamber. Through the arrangement of the bearing cover 10, the elastic wave retaining ring 11 and the elastic retaining ring 12, grease leakage is effectively prevented, and the sealing effect is good.

In order to meet the different load requirements of the motor and reduce the cost of the motor, an annular bearing retaining ring 14 is pressed on the outer end surface of the bearing 5. The annular bearing retaining ring 14 is arranged in the center hole of the bearing cover 10, and the outer peripheral surface of the rotor shaft 301 There are two circlip grooves 302 at the connection with the bearing 5, and the shaft circlips 13 are embedded in the corresponding circlip grooves 302 according to the thickness specifications of the current bearing 5, so that the shaft circlips 13 are pressed laterally Live ring type bearing retaining ring 14. Through the setting of the two snap ring grooves 302, two bearings 5 with different thickness specifications can be used to meet the requirements of different loads of the motor and reduce the cost of the motor.

In order to prolong the maintenance-free period, a labyrinth seal structure is provided between the shaft outlet hole on the top of the end cover 4 and the rotor shaft 301. The labyrinth seal structure includes two labyrinth grooves 405 and the The projections on the 301 corresponding to the labyrinth groove 405, the matching gap between the end cover 4 and the rotor shaft 301 is 0.4mm. The labyrinth seal structure can effectively prevent a large amount of bearing grease from flowing out, prolong the maintenance cycle of adding and replacing bearing grease, and achieve the purpose of maintenance-free.

The bolt-free double-flange vertical vibrating motor shown in Figures 1-4 above is a specific embodiment of the present invention, which has demonstrated the substantive features and progress of the present invention, and can be used in the present invention according to actual needs. Under the inspiration of , the equivalent modification of its shape, structure and other aspects are all within the scope of protection of this scheme.

Claims (10)

1. A bolt-free double-flange vertical vibration motor, including a base (1), end covers (4) with bearing chambers on both sides of the base (1), and bases (1) ), the rotor (3) with a rotating shaft (301) matched with the stator (2), the bearing (5) located in the bearing chamber of the end cover (4), and the bearings located on both sides of the base (1) The eccentric block on the rotating shaft (301), the rotor (3) is rotationally connected with the end cover (4) through the bearing (5) outside the rotating shaft (301), and it is characterized in that: one end of the end cover (4) The connecting end of the machine base is matched with the machine base (1), and the connecting end of the machine base protrudes outward to form a connecting flange (401) for connecting and fixing with external equipment, and the outer peripheral surface of the connecting flange (401) It is a tapered surface (406), and one end of the connecting flange (401) is the connecting end matching the base (1), and the diameter of the connecting end of the connecting flange (401) is larger than the diameter of the other end so that the motor is The external equipment of the matching inner tapered surface of the shaped surface (406) is compressed and fixed. 2. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the junction box (15) is located on the top of the base (1), and the junction box (15) One side is provided with a vertically upward cable connector (7) for connecting external cables, and the cable connector (7) is connected to the terminal block (6) provided in the junction box (15) to realize the " Y" or "△" type connection, the junction box (15) is potted with resin. 3. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the base (1) passes through the outer spigot and the end cover (4) The fitting of the inner spigot realizes the connection between the machine base (1) and the end cover (4), and the fitting surface is provided with a sealing ring (8) for sealing. 4. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the rotor shaft (301) outside the end cover (4) is provided with an annular groove (402 ), an elastic V-shaped sealing ring (9) is embedded in the annular groove (402), and the V-shaped sealing ring (9) includes elastic interference fit with the circumferential surface of the annular groove (402) The inner ring of the main body and the sealing lip elastically close to the outer end surface of the top of the end cover (4). There is a connection gap between the end cover (4) and the rotor shaft (301), and the sealing lip covers the connection gap. 5. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the outer peripheral wall of the end cover (4) is surrounded by a plurality of axially arranged reinforcing ribs (403), the reinforcing rib (403) is triangular in shape, and its high end is connected with the connecting flange (401), the length of the reinforcing rib (403) is less than the length of the end cover (4), and the The opposite end of the connecting end of the frame forms a clamping portion without reinforcing ribs (403). 6 . The bolt-free double-flange vertical vibration motor according to claim 5 , wherein the length of the clamping portion ranges from 15 mm to 20 mm. 7 . 7. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the outer end surface of the top of the end cover (4) is provided with an axially penetrating threaded hole (404) to Make the screw enter the bearing chamber from the outside of the end cover (4) through the threaded hole (404) and push the bearing (5) out of the end cover (4). 8. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: the bearing (5) includes a bearing attached to the inner end surface of the top end cover (4) of the bearing chamber The inner end face and the outer end face of the bearing located on the side of the bearing (5) pressed into the bearing chamber. The outer end face of the bearing is provided with a bearing cover (10) for protecting the bearing (5) and preventing grease loss. The bearing A circlip (11) is pressed on the outside of the cover (10), and a circlip (12) is provided on the outside of the bearing cover (10) and the circlip (11), and the circlip The outer peripheral surface of (12) is embedded in the inner concave ring groove of the side wall of the bearing chamber. 9. A bolt-free double-flange vertical vibration motor according to claim 8, characterized in that: the outer end surface of the bearing is pressed with a ring-shaped bearing retaining ring (14), and the ring-shaped bearing The retaining ring (14) is set in the center hole of the bearing cover (10), and the connection between the outer peripheral surface of the rotor shaft (301) and the bearing is provided with two snap ring grooves (302), which can be selected according to the thickness specification of the bearing. A circlip (13) for the shaft is embedded in one of the circlip grooves (302), so that the circlip (13) for the shaft is laterally pressed against the annular bearing retaining ring (14). 10. A bolt-free double-flange vertical vibration motor according to claim 1, characterized in that: there is a shaft outlet hole at the top of the end cover (4) and the rotor shaft (301). A labyrinth seal structure, the labyrinth seal structure includes a plurality of labyrinth grooves (405) provided on the inner peripheral surface of the shaft outlet hole of the end cover (4) and protrusions corresponding to the labyrinth grooves (405) on the rotor shaft (301) , the matching gap between the end cover (4) and the rotor shaft (301) is between 0.35mm and 0.5mm.