CN2836322Y

CN2836322Y - Motor with improved structure

Info

Publication number: CN2836322Y
Application number: CN 200520093115
Authority: CN
Inventors: 张鹏仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-02
Filing date: 2005-11-02
Publication date: 2006-11-08
Anticipated expiration: 2015-11-02

Abstract

The utility model relates to a motor having an improved structure, particularly a motor structure for a brick grinding machine. The front bearings of the motor structure comprise an annular ball bearing and a single-row conical roller bearing which are arranged up and down; rear bearings of the motor structure comprise a conical roller bearing and an annular ball bearing which are arranged up and down. The inner side of an upper press cover of the rear bearings is connected with a rotary sleeve by screw threads; the upper press cover of the rear bearings and the rotary sleeve form a bearing gap adjusting device; the rotary sleeve forms a circular ring shape, and the bottom is provided with a circular bead; the upper press cover of the rear bearings is in contact with the upper surface of the circular bead, the lower surface of the circular bead is in contact with the upper surface of a conical sleeve of the conical roller bearing, and the conical sleeve moves up and down; the rotary sleeve lifts along the upper press cover of the rear bearings by outer screw threads, and accordingly, a gap of the conical roller bearing is adjusted. The utility model is provided with two front bearings and two rear bearings, which makes a motor have equal front weight and rear weight and have less influence of the centrifugal force of a grinding disc; the rear bearings are provided with the bearing gap regulation device, and the bearings are made to have the characteristics of small gap, high precision, less abrasion and long service life.

Description

A kind of motor that improves structure

Technical field

The utility model relates to the motor that improves structure, particularly a kind of electric machine structure that is applied to rattler.

Background technology

As shown in Figure 1, rattler generally is made of upper beam 1, motor 2, Double bearing support 3, crossbeam 4, column 5, guide rail bench 6, mill 7 etc., wherein mill 7 is driven by belt transmission by motor 2, its weak point is: skidding appears in belt transmission easily, transmission accuracy is lower, need two bearing pedestals simultaneously, complex structure, cost are higher.

As shown in Figure 2, the motor that is used for rattler that occurs comprises at present: shell 8, motor shaft 9, fan blade 10, rotor 11, stator 12, rear bearing block 13, rear bearing 14, rear bearing upper press cover 15, rear bearing lower cover 16, front-end bearing pedestal 19, fore bearing 20, fore bearing upper press cover 21, fore bearing lower cover 22 etc., wherein, rear bearing 14 is a radial ball bearing, fore bearing 20 comprises biserial angular contact bearing and cylinder roller bearing, motor shaft 9 one ends directly link to each other with mill 7, the other end is connected with fan blade 10, rear bearing places rear bearing upper press cover 15, between the rear bearing lower cover 16, seal by sealing ring, its weak point is: this motor front end is heavy, the rear end is light, when mill is big, centrifugal force is big, easily vibrations; In addition, three bearing arrangement complexity of front end, dismounting difficulty.

The utility model content

The purpose of this utility model is to provide a kind of motor that improves structure, after this motor improves simple in structure, dismounting is easy to maintenance, cost is lower.

The technical solution of the utility model is:

A kind of motor that improves structure has forward and backward bearing, and described fore bearing comprises the radial ball bearing and the single-row tapered roller bearing of upper and lower settings.

The motor of described improvement structure is between fore bearing upper press cover and the motor shaft, be provided with oil sealing between fore bearing lower cover and the motor shaft.

The motor of described improvement structure, fore bearing lower cover bottom has shoulder, and the shoulder outside is covered with the water shutoff cover, and the water shutoff cover is fixed on the motor shaft by jackscrew.

The motor of described improvement structure, described rear bearing comprises the taper roll bearing and the radial ball bearing of upper and lower settings, rear bearing upper press cover inboard is by the rotation set that has been threaded, rear bearing upper press cover and rotation set constitute the bearing clearance adjusting device, this rotation set is the annular that the bottom has shoulder, the rear bearing upper press cover contacts with the shoulder upper surface, and the shoulder lower surface contacts with the tapered sleeve upper surface of the upper and lower activity of taper roll bearing, adjusts the gap of taper roll bearing by the lifting of rotation set.

The motor of described improvement structure is between described rotation set inboard and the motor shaft, be provided with oil sealing between rear bearing lower cover and the motor shaft.

The beneficial effects of the utility model are:

1, the utility model front and back bearings adopts two bearings respectively, makes motor front and back balanced weight, is subjected to the mill centrifugal forces affect less; Rear bearing has the bearing clearance adjusting device, makes that the bearing clearance is less, precision is high, wear and tear less, the life-span is long.

2, the utility model front and back bearings dismounting, easy to maintenance.

3, the forward and backward bearing of the utility model adopts oil sealing to replace sealing ring, and sealing effectiveness is better.

4, the utility model fore bearing lower cover bottom is provided with water-tight device, can prevent that sealing is spilled on the mill.

5, the utility model cost is lower.

Description of drawings

Fig. 1 is in the prior art, the structural representation of rattler.

Fig. 2 is in the prior art, the structural representation of the used motor of rattler.

Fig. 3 is an example structure schematic diagram of the used motor of the utility model rattler.

Fig. 4 is another example structure schematic diagram of the used motor of the utility model rattler.

Among the figure:

1 puts the beams in place; 2 motors; 3 Double bearing supports; 4 crossbeams; 5 columns; 6 guide rail bench; 7 mills; 8 shells; 9 motor shafts; 10 fan blades; 11 rotors; 12 stators; 13 rear bearing blocks; 14 rear bearings; 141 taper roll bearings; 142 radial ball bearings; 143 tapered sleeves; 15 rear bearing upper press covers; 16 rear bearing lower covers; 17 rotation sets; 171 shoulders; 18 oil sealings; 19 front-end bearing pedestals; 20 fore bearings; 201 radial ball bearings; 202 single-row tapered roller bearings; 21 fore bearing upper press covers; 22 fore bearing lower covers; 221 shoulders; 23 oil sealings; 24 water shutoff covers; 25 jackscrews.

Embodiment

Embodiment 1

As shown in Figure 3, the used motor of the utility model rattler comprises: shell 8, motor shaft 9, fan blade 10, rotor 11, stator 12, rear bearing block 13, rear bearing 14, rear bearing upper press cover 15, rear bearing lower cover 16, front-end bearing pedestal 19, fore bearing 20, fore bearing upper press cover 21, fore bearing lower cover 22, oil sealing 23, water shutoff cover 24, jackscrew 25 etc., motor shaft 9 one ends directly link to each other with mill 7, the other end is connected with fan blade 10, rear bearing places between rear bearing upper press cover 15, the rear bearing lower cover 16, and rear bearing 14 is a radial ball bearing; Described fore bearing 20 comprises the radial ball bearing 201 (318 type) and the single-row tapered roller bearing 202 (7318 type) of upper and lower settings, between fore bearing upper press cover 21 and the motor shaft 9, be provided with oil sealing 23 between fore bearing lower cover 22 and the motor shaft, can more effectively prevent dust and greasy dirt, fore bearing lower cover 22 bottoms have shoulder 221, shoulder 221 outsides are covered with water shutoff cover 24 simultaneously, have the excessive function of waterproof, water shutoff cover 24 is fixed on the motor shaft 9 by jackscrew 25.

Embodiment 2

As shown in Figure 4, the used motor of the utility model rattler comprises: shell 8, motor shaft 9, fan blade 10, rotor 11, stator 12, rear bearing block 13, rear bearing, rear bearing upper press cover 15, rear bearing lower cover 16, rotation set 17, oil sealing 18, front-end bearing pedestal 19, fore bearing 20, fore bearing upper press cover 21, fore bearing lower cover 22, oil sealing 23, water shutoff cover 24, jackscrew 25 etc., motor shaft 9 one ends directly link to each other with mill 7, the other end is connected with fan blade 10, rear bearing places rear bearing upper press cover 15, between the rear bearing lower cover 16, described rear bearing comprises the taper roll bearing 141 (7213 type) and the radial ball bearing 142 (80213 type) of upper and lower settings, rear bearing upper press cover 15 inboards are by the rotation set 17 that has been threaded, rear bearing upper press cover 15 constitutes the bearing clearance adjusting device with rotation set 17, this rotation set 17 has the annular of shoulder 171 for the bottom, rear bearing upper press cover 15 contacts with shoulder 171 upper surfaces, on shoulder lower surface and the taper roll bearing, following movable tapered sleeve 143 upper surfaces contact, rotation set 17 by external screw thread along 15 liftings of rear bearing upper press cover, thereby adjust the gap of taper roll bearing 141 by the lifting of rotation set 17, between the inboard and motor shaft 9 of rotation set 17, be provided with oil sealing 18 between rear bearing lower cover 16 and the motor shaft; Described fore bearing 20 comprises the radial ball bearing 201 (318 type) and the single-row tapered roller bearing 202 (7318 type) of upper and lower settings, between fore bearing upper press cover 21 and the motor shaft 9, be provided with oil sealing 23 between fore bearing lower cover 22 and the motor shaft, can more effectively prevent dust and greasy dirt, fore bearing lower cover 22 bottoms have shoulder 221, shoulder 221 outsides are covered with water shutoff cover 24 simultaneously, have the excessive function of waterproof, water shutoff cover 24 is fixed on the motor shaft 9 by jackscrew 25.

Claims

1, a kind of motor that improves structure has forward and backward bearing, it is characterized in that: described fore bearing (20) comprises the radial ball bearing (201) and the single-row tapered roller bearing (202) of upper and lower settings.

2, according to the motor of the described improvement structure of claim 1, it is characterized in that: between fore bearing upper press cover (21) and the motor shaft (9), be provided with oil sealing (23) between fore bearing lower cover (22) and the motor shaft (9).

3, according to the motor of the described improvement structure of claim 1, it is characterized in that: fore bearing lower cover (22) bottom has shoulder (221), and shoulder (221) outside is covered with water shutoff cover (24), and water shutoff cover (24) is fixed on the motor shaft (9) by jackscrew (25).

4, motor according to the described improvement structure of claim 1, it is characterized in that: described rear bearing comprises the taper roll bearing (141) and the radial ball bearing (142) of upper and lower settings, rear bearing upper press cover (15) is inboard by the rotation set that has been threaded (17), rear bearing upper press cover (15) constitutes the bearing clearance adjusting device with rotation set (17), this rotation set (17) has the annular of shoulder (171) for the bottom, rear bearing upper press cover (15) contacts with shoulder (171) upper surface, on shoulder (171) lower surface and the taper roll bearing (141), following movable tapered sleeve (143) upper surface contacts, and adjusts the gap of taper roll bearing (141) by the lifting of rotation set (17).

5, according to the motor of the described improvement structure of claim 2, it is characterized in that: between the inboard and motor shaft (9) of described rotation set (17), be provided with oil sealing (18) between rear bearing lower cover (16) and the motor shaft (9).