CN202418454U

CN202418454U - Wide V band stepless speed changer

Info

Publication number: CN202418454U
Application number: CN2011203900210U
Authority: CN
Inventors: 莫帅
Original assignee: Individual
Current assignee: Zhang Lu
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-09-05
Anticipated expiration: 2021-10-14

Abstract

The utility model provides a wide V band stepless speed changer which is characterized in that an input shaft of the speed changer is directly connected with a motor; the rotating speed of an output shaft of the wide V band stepless speed changer can be continuously changed through an adjustment handwheel under the condition that the motor runs at high speed, so that the rotating speed of the output shaft is continuously changed within a certain speed ratio range; by adopting a structure that an oil hole is formed in a speed regulation screw, the problem about self-lubrication of the wide V band stepless speed changer is solved; by adopting a wide V band, the speed is changed steadily, effects of absorbing shock and reducing noise are achieved, overload protection is realized, and the speed change range is relatively large; and the wide V band stepless speed changer has a simple structure, is convenient to maintain and serves as speed regulation equipment which can be widely applied to industries such as light industrial machinery.

Description

Wide V band stepless speed variator

Technical field

The utility model relates to a kind of wide V band stepless speed variator, can be used for the stepless speed regulation that automatic is gone up in industry.

Background technique

Mechanical stepless transmission is a kind of arrangements for speed regulation, can be implemented under the constant situation of input speed, and the rotating speed of output shaft changes within the specific limits continuously, to satisfy the requirement of various different operating modes in the course of the work of machinery equipment or production system.Adopt mechanical stepless transmission in the actual production, especially when being used, can further enlarge its slewing range with retarder, can adapt to better various machineries different operating modes to the requirement of speed, make it effect and reach best.Mechanical stepless transmission adapts to the needs that the product different size changes in the output and the quality that improve product, and all there is significant effect aspects such as the mechanization of realization whole production system, automation.Mechanical continuously-variable transmission is a kind of transmission device that adapts to modernization industry production and flow mechanization, automation and improve the machine work performance.That mechanical continuously-variable transmission has is simple in structure, easy to maintenance, speed change is quick, simple to operate, advantage such as transmission efficiency is high, noise is little, constant output characteristic is good.Mechanical stepless transmission has and can change by adaptation condition; Save numerous advantages such as the energy, minimizing environmental pollution, simplification transmission system; Therefore at home and abroad application is quite extensive, particularly at light industry and machinery, chemical machinery, textile manufacturing machine; Extensively use in all kinds of machineries such as package packing machine, food machinery, handling machinery, even also extensively adopt the mechanical stepless speed changes transmission at the car speed variator system.Variable v-belt drive can be divided into two types of flat rubber belting stepless speed variator, V band stepless speed variators according to the shape of driving belt.The flat rubber belting stepless speed variator adopts flat driving belt, and belt wheel is coniform.Flat rubber belting is simple in structure, and is cheap, make easily, but speed adjustable range is less, and transmitted power is little, and the shared spatial position of transmission device is bigger, generally is used in slewing range and lower-powered occasion.Wide V band stepless speed variator slewing range is big, and transmitted power is bigger, and the flexibility of band is better, and is simple in structure; Be easy to make, easy to maintenance, with low cost, transmission efficiency is high; And has stable working, overload protection, absorbed oscillation, advantage such as noise is little; Can transmit higher peripheral velocity, driving shaft can directly link to each other with motor again, and that on light industry and machinery, uses is very extensive, is to use the widest type in the variable v-belt drive.

Based on above technical background; The utility model provides a kind of wide V simple in structure, easy to operate, that speed change steady, slewing range is bigger, easy to maintenance, with low cost and be with stepless speed variator; The actual demand of enterprise can be satisfied, bigger social benefit and economic benefit can be produced again.

Summary of the invention

In order to overcome existing machinery formula stepless speed variator complex structure, maintenance difficult, cost is higher, lubricated bad wait not enough; The utility model provides a kind of wide V band stepless speed variator, can be implemented in and realize continuously changing of output shaft speed under the motor rotation situation, satisfy under the different operating modes of working machine requirement speed; Slewing range is bigger, shock-absorbing noise abatement, overload protection; Simple in structure, easy to maintenance, and solved the self-lubrication problem that wide V is with stepless speed variator.

The utility model solves the technological scheme that its technical problem adopted: adopt wide V band to increase slewing range, transmits more high-powerly, spring is installed in the permanent moment of torsion stepless speed regulation of realization on the follower; Two deep groove ball bearings are housed on the screw rod, and gland is realized the axial restraint of bearing and is fixed with sliding bell dish I, at screw rod tail a locking handwheel is housed; Realize the locking of gear ratio, fixedly belt pulley all is connected through key with the sliding bell dish, and the sliding bell dish can endwisely slip along key; Have through hole in the middle of the screw rod; Can store a certain amount of lubricant oil, and have oil outlet near the surface of belt pulley one side, let lubricant oil from then on flow out in the hole to realize lubricated to bearing, key, screw rod, swivel nut at screw rod; Fixedly also have oilhole on the belt pulley II, be implemented in lubricating sliding bell dish II and key on the follower.Variable velocity zone adopts wide V band; Realize the speed governing of speed changer through rotation adjustment handwheel; Spring is installed on the follower sliding bell dish II; Be designed with tank filler sleeve and oil outlet on the screw rod and can store a certain amount of lubricant oil and solve the lubrication problem on the driving wheel, realize bearing, key, screw rod, swivel nut, fixing lubricating of part such as belt pulley I, sliding bell dish I, fixedly belt pulley II is provided with oilhole and also can solves the lubrication problem on the follower; The solution of lubrication problem makes speed change more steady, more convenient operation.Through the adjustment handwheel variable; Rotation adjustment handwheel drives screw rod and rotates; Through the rotation of screw rod, realize moving axially of sliding bell dish I on the driving wheel, because fixedly the axial distance between belt pulley and the sliding bell dish changes; And wide V band width constant, the position of wide V band on belt pulley will change (radius of clean-up that is belt pulley will change).When the distance between the active belt pulley is drawn back maximum; Just sink to the bottom of groove between two disks of this change pulley during wide V tape travel, the driving wheel radius of clean-up is minimum, and the belt on the follower turns round in outer most edge; The follower radius of clean-up is maximum; At this moment the velocity ratio of speed changer is maximum, and belt speed is minimum, and secondary speed is minimum; Otherwise, when the distance of driving wheel between two disks for hour, variable velocity zone just changes in the outer most edge labour movement of driving wheel; Working diameter is maximum; And in the bottom run of groove between two dishes of the belt on the follower, the radius of clean-up be minimum, and at this moment the velocity ratio of speed changer be minimum (being speedup); Belt speed is the highest, and secondary speed is for the highest.

The beneficial effect of the utility model is directly to link to each other the permanent moment of torsion stepless change under motor normal operation situation in the realization in a big way with motor; Can effectively solve the self-lubrication problem of principal and subordinate wheel parts, speed change is steady, and is simple in structure; Easy processing, easy to maintenance, with low cost.

Description of drawings

Fig. 1 is the structural drawing of the utility model

Fig. 2 is the A-A sectional view of Fig. 1

Fig. 3 is the B-B sectional view of Fig. 1

Among the figure:

Embodiment

In Fig. 1, fixedly belt pulley I (1), sliding bell dish I (2), fixedly belt pulley II (10), sliding bell dish II (11), wide V band (9) have constituted the agent structure of wide V band stepless speed variator, wherein fixedly belt pulley I (1) passes through two keys (3) and is connected with sliding bell dish I (2); Fixedly belt pulley II (10) is connected with sliding bell dish II (11) through key (18), and spring (12) is installed on sliding bell dish II (11) end face through back-up ring (17) and four hexagon socket head cap screws (15), spring washer (14), and oil nozzle (14) is tightened in through being threaded fixedly on the belt pulley II (10); Be used for injecting lubricant oil; Screw rod (19) one ends are fixing through Cock screw (31) with adjustment handwheel (32), and oil nozzle (14) also is tightened in through being threaded on the screw rod (19), and screw rod (19) and swivel nut (27) are through being threaded; Swivel nut (27) is installed on the fixed plate (34); Can slide along fixed plate (34), fixed plate (34) links to each other with bearing through two bolts (28), nut (29), spring washer (30), and this end of screw rod (19) also is furnished with locking handwheel (33) simultaneously; Play the role of fastening; The outer surface of swivel nut (27) is equipped with bearing (21), and axle has been installed with spring collar (20), an end face of rigid bearing (21); The other end leans on gland (25) fixing; Gland (25) the inside is equipped with felt collar (26) and is sealed, and prevents that leakage of oil and dust from getting into, and gland (25) is through four round head bolts (23), spring washer (24); It is fixing with sliding bell dish I (2) that paper washer (22) is added in the centre; Fixedly the endoporus of belt pulley I (1) is equipped with internal circlip (8) and middle cover (7) end of bearing (4) is played the axially locating effect, and bearing (4) is installed in the afterbody in screw rod (19), and through bolt (5), spring washer (16), plain washer (35) bearing (4) is played the role of positioning.Motor is under the normal operation situation; Only need to rotate the change that adjustment handwheel (32) can be realized output shaft speed; When treating the output shaft rotational speed regulation to the needed desirable desired speed of working machine; Only need tighten locking handwheel (33), locking handwheel promptly capable of using (33) locking velocity ratio keeps the output shaft invariablenes turning speed.

The above; It only is the preferred embodiments of the utility model; Be not that the utility model is done any restriction; Every any modification, change and equivalent structure of above mode of execution being done according to the utility model technical spirit changes, and all still belongs within the protection domain of the utility model technology.

Claims

1. one kind wide V band stepless speed variator can directly link to each other with motor and can under motor normal operation situation, realize continuously changing of working machine speed, it is characterized in that adopting wide V to be with (9) increase slewing range; Transmit more high-power; Spring (12) is installed in realizes permanent moment of torsion stepless speed regulation on the follower, sliding bell dish I (2) and sliding bell dish II (11) are installed in the homonymy of wide V band (9), and gland (25) is realized the axial restraint of bearing (4) and fixed with sliding bell dish I (2); At screw rod (19) afterbody a locking handwheel (33) is housed; Realize the locking of gear ratio, fixedly belt pulley I (1) all is connected through key (3) with sliding bell dish I (2), and sliding bell dish I (2) can endwisely slip along key (3); Have through hole in the middle of the screw rod (19); Can store a certain amount of lubricant oil, and have oil outlet near the surface of sliding bell dish I (2) one sides, let lubricant oil from then on flow out in the hole to realize lubricated to bearing (21), bearing (4), key (3), screw rod (19), swivel nut (27) at screw rod (19); Fixedly also have oilhole on the belt pulley II (10), be implemented in lubricating sliding bell dish II (11) and key (3) on the follower.

2. wide V band stepless speed variator according to claim 1; Swivel nut (27) one ends that it is characterized in that wide V band stepless speed variator are installed on the fixed plate (34); And can slide along fixed plate (34); Fixed plate (34) is tightened in bearing through bolt and plays a supportive role, and gland (25) lining is equipped with felt collar (26) and is sealed, and prevents that leakage of oil and dust from getting into.