CN2141145Y - Pivot structure of geared-down motor with major axial load-carrying ability - Google Patents

Abstract

A pivot structure of a geared-down motor with major axial load-carrying ability is that a mandrel supplying output and transmission is provided with a bearing with enduring axial load force. When a geared-down motor is designed for making axial direction transmission, the bearing can endure the axial load force and can not be damaged.

Description

Pivot structure of geared-down motor with major axial load-carrying ability

The utility model relates to a kind of motor, particularly relates to a kind of larger axis that has that can bear axial forces and can not make motor spindle produce displacement and damage and constructs to the gearmotor axle pivot of holding capacity.

General processing machine is often in order to adapt to the needs of working position and processing occasion, though machine itself is constant because of the basic system of processing institute palpus, but the corresponding relation between each mechanism then can form a kind of space kenel of different purposes, so that do the processing of special occasions, as common horizontal planer and vertical planer, horizontal milling machine and vertical knee-type milling machine, mechanism's difference that it causes can adapt to the processing kenel of different kenels respectively; And say with regard to motor type, its pattern has stepping motor, DC motor, AC motor, gearmotor etc., of a great variety, still, no matter motor type has the how many kinds of pattern, general electric-motor drive mode mostly adopts horizontal transmission, it follows tradition on the one hand, on the one hand also is to obtain the facility in the design, also perhaps is that business circles are doubted numerous and diverse in mechanism on the other hand, exploitation is difficult for, so new breakthrough is not arranged always.

The utility model is at gearmotor, though the mechanism of gearmotor is very complicated, as Fig. 1, shown in 2, but the prior art relevant with this case, it comprises motor (1), body (2), train of reduction gears (3) constitutes, and the configuration scenario of above-mentioned each member, be three accommodation chambers (192) (182) (172) that respectively are diverse location and centre-to-centre spacing to be set at motor (1) front end, for installing train of reduction gears (3), body (2) is to use the affixed element of screw thread and is fixed together with motor (1) front end face screw thread, the center is provided with through hole (292), and its position that corresponds to the accommodation chamber (192) (182) (172) of motor (1) also is provided with three accommodation spaces and { does not show on the figure } for installing train of reduction gears (3), and train of reduction gears (3) is by output gear (392), both sides section gears (382) (372), axle (362) and both sides section axles (352) members such as (342) are formed, side section gear (382) cover is fixed in above the side section axle (352), then each sheathed ball bearing (4) of side section axle (352) two ends { also there was the use oiliness bearing } in the past and can rotates flexibly so that it is hubbed in the accommodation chamber (182) of motor (1), side section axle (352) outer peripheral face is provided with gear (352 ') and is meshed with the gear (162 ') with motor (1) central shaft (162) front end, rotates synchronously to drive side section axle (352) by means of central shaft (162); Side section gear (372) cover is fixed in above the side section axle (342) and is meshed with the gear (352 ') of side section axle (352), side section axle (342) outer peripheral face also is provided with gear (342 '), and can rotate flexibly so that it is hubbed in the accommodation chamber (172) of motor (1) at each sheathed ball bearing (5) of its two ends; In addition, output gear (392) then overlaps and is fixed in axle (362) and goes up and be meshed with the gear (342 ') of side section axle (342), axle (362) is hubbed in the accommodation chamber (192) of motor (1), its front end sleeve is provided with ball bearing (6) and the rear end also is arranged with bearing (7), and axle (362) front end passes the through hole (292) of body (2), like this, by means of description to above-mentioned each member relevant position, as long as motor (1) one energising can make side section axle (352) (342) and axle (362) rotate simultaneously, and drive other mechanism's rotation by means of the axle (362) that exposes to body (2) front end.

See also shown in Figure 3 again, it is the schematic diagram that motor (8) is installed in the relevant position of drilling machine, the kind of drive of motor (8) is horizontal transmission, to drive other driving member running, yet, according to Newton's laws of motion (Newton ' s laws of motion) as can be known, when we apply an active force in object, object must also can apply a reaction force and give us, to reach equilibrium of forces, therefore, when motor (8) axle drives other driving member running, driving member must be executed a reaction force and give motor (8) axle, because motor (8) axle is horizontal transmission, so, this reaction force is to belong to " radially " to put on motor (8) above the axle, promptly, this reaction force also can be bestowed bearing one counter-force that is set on the axle simultaneously, but, bearing is that ball bearing { sees also gearmotor shown in Figure 1 and recited above }, and the design of general ball bearing is exactly to focus on to bear and absorb radially strength, therefore, when motor (8) axle in horizontal transmission, reaction force can't center roller and bearing or other member cause damage.

Yet, along with the progress and the science and technology in epoch are maked rapid progress, the transmission mechanism of some machines design now also changes to some extent in response to processing kenel and locus, see also shown in Figure 4, it is a kind of comprehensive evaporation precooling or trash ice self-control machine, its screw rod (9) member is axial rotation, to reach the purpose of screw feeding, and the rotation of screw rod (9) is to lean against the gearmotor of installing its bottom (not showing on the figure) to drive, if gearmotor also adopts horizontal transmission installing mode as shown in Figure 3, then relatively must increase the space, and make gearmotor can laterally drive screw rod (9); Yet, this " light, thin, short, little " design concept of pursuing with epoch now is mutually far short of what is expected really, therefore, if with gearmotor drving sprial bar directly, and be the axial manner transmission, then can solve the shortcoming that adopts horizontal transmission " increase space "; But, the direct drive mode of this kind, say according to Newton's laws of motion, the screw rod (9) that the axle of gearmotor (362) { sees also } rotating band cardon 4 shown in Figure 1, need to adopt axial rotation, just, because of screw rod (9) center roller (362) produces axial reaction force, also bear reaction force simultaneously and overlap the ball bearing (6) that is fixed in axle (362), ball bearing only focuses on to bear and absorbs radially strength, so, for ball bearing (6), reaction force can damage even can't use it, this is for axle (362), then because of the relation of ball bearing (6) infringement, axle (362) is moved down gradually make it break away from original position, the output gear (392) that also causes cover to consolidate on it moves with gear (342 ') position of engagement of side section axle (342), and by the incorrect formed gear teeth damage of the origin cause of formation output gear (392) and gear (342 ') engagement of side section axle (342), so that whole gearmotor can't use and need whole group to renew, and causes the waste of money again.

The purpose of this utility model is to be to provide a kind of gearmotor axle pivot structure with larger axis to holding capacity, makes it can bear axial load strength and can not cause damage to motor.

Based on above-mentioned purpose, according to the gearmotor axle pivot structure with larger axis to holding capacity of the present utility model, be primarily characterized in that: be arranged with the bearing that can bear axial load strength above the axle for the output transmission, when gearmotor is designed to do axial transmission, for the axial reaction force that parts caused that it drove, make it can't cause damage to gearmotor.

Have larger axis and be elaborated of the present utility model below by most preferred embodiment and accompanying drawing to the gearmotor axle pivot structure of holding capacity, in the accompanying drawing:

Fig. 1 is existing gearmotor exploded perspective schematic diagram.

Fig. 2 is the three-dimensional combination of an existing gearmotor schematic diagram.

Fig. 3 is the inner schematic perspective view of existing drilling machine.

Fig. 4 is figure between the screw rod of existing evaporation precooling comprehensively or trash ice self-control machine shows.

Fig. 5 is a gearmotor exploded perspective schematic diagram of the present utility model.

Fig. 6 is a partly cross-sectional schematic of gearmotor of the present utility model.

Fig. 7 is a use schematic diagram of the present utility model.

Fig. 8 is the schematic diagram of another embodiment of the utility model.

See also Fig. 5, shown in 6, gearmotor axle pivot structure with from larger axis to holding capacity of the present utility model, it mainly is to be provided with three accommodation chambers (11) (12) (13) that respectively are diverse location and centre-to-centre spacing for installing train of reduction gears (30) at motor (10) front end face, and body (20) is to use the affixed element of screw thread and be fixed together with motor (10) front end face screw thread, the center is provided with through hole (21), and its position that corresponds to the accommodation chamber (11) (12) (13) of motor (10) also is provided with three accommodation spaces { on the figure show } and is installed between motor (10) and the body (20) for train of reduction gears (30).

Gear reduction group (30) comprises axle (31), output gear (32), first power transmission shaft (33), first gear (34), second power transmission shaft (35) and second gear members such as (36), wherein first gear (34) cover is fixed in above first power transmission shaft (33), then each sheathed ball bearing (40) of first power transmission shaft (33) two ends so that being hubbed in the accommodation chamber (11) of motor (10), it can be rotated flexibly, and first power transmission shaft (33) outer peripheral face is provided with gear (331) and is meshed with the gear (141) with motor (10) central shaft (14) front end, drives first power transmission shaft (33) by means of central shaft (14) and rotates synchronously; Second gear (36) cover is fixed in above second power transmission shaft (35) and is meshed with the gear (331) of first power transmission shaft (33), second power transmission shaft (35) outer peripheral face also is provided with gear (351), and respectively is arranged with ball bearing (50) at its two ends and can rotates flexibly so that it is hubbed in the accommodation chamber (12) of motor (10); Output gear (32) cover is fixed in axle (31) and is meshed with the gear (351) of second power transmission shaft (35), axle (31) is hubbed in the accommodation chamber (13) of motor (10), its front end sleeve is provided with ball bearing (60) and the rear end also is arranged with less ball bearing (70), and the through hole (21) that axle (31) front end passes body (20) { sees also shown in Figure 6 }.

Creative feature of the present utility model is to be axle (31) rear end and to be positioned at less ball bearing (70) front to be provided with the thrust bearing (80) that can bear axial load strength { it also can adopt the sway roller bearing, as long as have bear larger axis to the bearing of power all can, and this design is in practical operation, gearmotor design is used when axial transmission can be born axial load strength { screw rod member as shown in Figure 4 }, see also shown in Figure 7, when axle (31) front end is provided with travelling gear (311), and be meshed by the set internal gear (91) in driving member (90) bottom after, as long as a turn-on power is so that motor (10) running, the gear (331) that the gear (141) of its central shaft (14) front end promptly can drive first power transmission shaft (33) rotates { seeing also shown in Figure 5 }, like this, can make and then rotation of axle (31), and make by driving member (90) also running simultaneously, then can be driven other associated components motion by driving member (90) like this, and because had weight by driving member (90), and also have axial load when being driven other associated components and produce by driving member (90), therefore, axle (31) output action power is moved by driving member (90), then also can be bestowed reaction force and give axle (31) { according to Newton's laws of motion } by driving member (90), so, axle (31) time can be subjected to the suppressing action of the reaction force executed by driving member (90) in running, but, because axle (31) rear end is arranged with thrust bearing (80), and make it have the effect of bearing the axial load active force, therefore, axle (31) displacement that can not descend, and the thing that the gear teeth damage mutually takes place in the time of also can not causing overlapping gear (351) engagement of solid output gear (32) thereon and second power transmission shaft (35), therefore, its in life-span increase and when using running also smooth and easy.

In addition, see also shown in Figure 8, it is another embodiment with larger axis to the gearmotor axle pivot structure of holding capacity of the present utility model, and it is that thrust bearing (80) is installed in less bearing (70) back, and it also has the function of embodiment recited above.

In sum, the disclosed structure of the utility model embodiment, be to utilize to bear the bearing components of axial forces, so that its can be not impaired when bearing axial load effect, and its simple structure and don't the situation that can cause the whole gearmotor of need to renew again, the utmost point meets economic principle, so the utility model has practicality.

Claims (3)

1, a kind of gearmotor axle pivot structure with larger axis to holding capacity, it is to set firmly body at the motor front end, and the gear reduction assembling is located between motor and the body, the gear reduction group comprises axle, first power transmission shaft, second power transmission shaft, the intrinsic output gear of cover on the axle, first power transmission shaft is provided with first gear and its outer peripheral face is arranged with gear, second power transmission shaft is provided with second gear and its outer peripheral face also is arranged with gear, the gear of first power transmission shaft is meshed with second gear, output gear is meshed with the gear of second power transmission shaft, it is characterized in that:

Also be arranged with bearing between mandrels backend and the less ball bearing.

2, according to the described gearmotor axle pivot structure with larger axis to holding capacity of claim 1, it is characterized in that: described bearing is a thrust bearing.

3, according to the described gearmotor axle pivot structure with larger axis to holding capacity of claim 1, it is characterized in that: described bearing is the sway roller bearing.

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