CN105598024A

CN105598024A - Torque-adjustable vibration exciter

Info

Publication number: CN105598024A
Application number: CN201610138454.4A
Authority: CN
Inventors: 张辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2016-05-25

Abstract

The invention discloses a torque-adjustable vibration exciter. A synchronous gear (2), an eccentric block (3) and an adjusting gear (4) are fixed to a driving shaft (1) through key connection. A synchronous gear (10) and an eccentric block (9) are connected and fixed to a driven shaft (8) through a rectangular spline. An adjusting gear (11) and the middle section of the driven shaft (8) are connected through a large-lead spiral spline. A synchronous gear (6) and an eccentric block (5) are fixed to a shaft sleeve rotating around the driving shaft, and a synchronous gear (12) and an eccentric block (13) are fixed to a shaft sleeve rotating around the driven shaft. The end of the driven shaft (8) is connected with a device like a hydraulic cylinder (16) for adjusting the axial movement. By changing the axial position of the driven shaft (8), the adjusting gear (11) rotates by a certain angle, so that the phase difference of the eccentric blocks can be changed, then the exciting force and amplitude of the vibration exciter are changed, and the operation requirements of vibration machines on different working conditions are met.

Description

A kind of adjustable square vibrator

Technical field

The present invention relates to a kind of mechanical vibration generator, relate in particular to a kind of vibrator.

Background technology

Vibrator is in order to generation power, and this exciting force can be applied to the device on other structures and equipment, and vibrator can make to be swashed object and obtain certain forms and big or small vibratory output, is widely used on the vibratory equipment such as vibratory sieve, vibrohammer. In recent years, for meeting different operating modes, be necessary to realize the adjustable of exciting force of exciter and amplitude, and traditional formula of manually devaning and magnetic patch two-stage type have level to adjust square mode can not meet development of modern industry far away. Present electrodeless tune square vibrator has several like this modes: (1) shifting slide gear formula---and utilize moving axially of king bolt double helical spurgear, make and two groups of relative rotations of synchromesh gear of its engagement, thereby reach the object that regulates stepless eccentricity; (2) four axial adjustment shaft types---adjust on axle and have two sections of large helical pitch helical splines that rotation direction is contrary, on two keys, respectively fill a gear, one of them gear is meshed with synchromesh gear below, another gear is meshed with synchromesh gear above by idler gear, adjustment axle slides axially, lower group eccentric block rotates relative to upper group eccentric block, also can reach the object of stepless adjustment eccentric moment; (3) three axial adjustment shaft types---be equivalent to set up one and adjust axle on diaxon basis, produced the appearance effect of three axles. Above-mentioned three kinds of modes are all to adopt the guiding mechanism that is independent of eccentric shaft, have increased on the one hand the difficulty of manufacturing assembling, and consumptive material increases, and cost is higher; Cause on the other hand that vibrator volume increases, the higher and oeverall quality of overall size becomes heavy, the convenience variation while causing using, working amplitude reduce.

In recent years, occur that some are integrated in guiding mechanism the technical scheme of eccentric shaft: (1) Chinese utility model patent CN2793161Y discloses a kind of eccentric force moment adjusting mechanism of vibrator, by the planet row taking driven gear as planet carrier is set on driven shaft, utilize the rotation of the flexible drive planet row gear ring of hydraulic cylinder piston rod, and then change eccentric block phase difference, realize the object that changes eccentric moment. Manufacture, the mounting process of this scheme to planet row has very high requirement, the less stable of equipment operation. (2) Chinese invention patent CN101768971B discloses a kind of inner disposed upright formula eccentric moment adjusting mechanism, its eccentric moment adjusting mechanism is arranged on vibrator box house rearward position, by drive the driving shaft and the driven shaft Upper shaft sleeve that are processed with helical spline to move axially by hydraulic cylinder piston rod, and then drive driving shaft and driven shaft to rotate, make eccentric block produce phase difference, realize the object that changes eccentric moment. This scheme mechanism more complicated is higher to manufacture process requirement. (3) Chinese utility model patent CN2457210Y discloses a kind of eccentric force moment adjusting mechanism of vibrator, it is characterized in that being processed with in driven shaft spline, the end of driven shaft is the independent adjustment axle that large helical pitch internal helix spline is installed on same axis, on adjustment axle, fixedly mounting a synchromesh gear is meshed with the hard-wired synchromesh gear in driving shaft end of eccentric body, be processed with the connecting axle of spline and large helical pitch helical spline, coordinate driven shaft is connected with adjustment axle by key. This scheme is actually the improvement to three axial adjustment shaft types, and former the 3rd axle is put in driven axis hole, and manufacture process requirement is higher, and driven shaft is due to hollow, and intensity is difficult to ensure.

Summary of the invention

In view of the problem that known technology exists, the present invention aims to provide a kind of handling ease, scientific and reasonable for structure, the variable-torque vibrator that reliability is strong.

In order to address the above problem, the present invention realizes in the following ways: a kind of adjustable square vibrator, comprise belt pulley, casing, driving shaft, driven shaft, respectively has two synchromesh gears and eccentric block on driving shaft and driven shaft, wherein on driving shaft, there are a gear and eccentric block to be connected and fixed with key, it is characterized in that: on driving shaft, be also fixed with an adjusting gear; Driven shaft stage casing is processed with large helical pitch spiral external splines, has one to engage with above-mentioned adjusting gear and endoporus is processed with the adjusting gear of large helical pitch helical spline on driven shaft; Driven shaft right-hand member is processed with rectangle external splines, has a gear and eccentric block to be processed with rectangle internal spline on driven shaft; Another one gear on driving shaft and driven shaft and eccentric block are separately fixed on the axle sleeve can rotate around the axis; External splines is processed in two ends of driven shaft, is supported on bearing by being processed with the axle sleeve of internal spline; Driven shaft is connected with and can makes it produce axially movable device.

General, can adopt the mode of holding screw that free gear and eccentric block on driving shaft and driven shaft are fixed on the axle sleeve can rotate around the axis, also can adopt the modes such as welding; Can adopt hydraulic cylinder as making driven shaft produce axially movable device, the piston rod of hydraulic cylinder is fixed by thrust bearing and driven shaft end, can realize moving axially of driven shaft by the flexible of piston rod, also can adopt the structures such as leading screw.

Can make driven shaft generation move axially by being similar to the equipment of hydraulic cylinder, be converted into the rotation of driving shaft by the adjusting gear of driven shaft, and then make to be fixed on by being fixed on the eccentric block of driving shaft and being placed in eccentric block group that the eccentric block of driven shaft form with respect to being closed by the eccentric block that is placed in driving shaft the eccentric block group generation phase difference that the eccentric block of driven shaft form, realize the object of change eccentric moment with this. The present invention compares known technology, and the one, rational in infrastructure simple, adjusting device of eccentric moment is concentrated on to eccentric shaft, do not need extra adjusting device; The 2nd, part is easily manufactured, and described driven shaft outer surface rectangular spline and large helical pitch helical spline manufacturing technology are now domestic very ripe; The 3rd, reliability is strong, does not occur because of the situation of simplified structure taking reliability as cost. To sum up, variable-torque vibrator disclosed by the invention can be realized the effect of electrodeless bending moment well.

Brief description of the drawings

Accompanying drawing is the variable-torque vibrator cutaway view the present invention relates to.

Detailed description of the invention

As shown in drawings, a kind of adjustable square vibrator, comprises belt pulley 17, casing 18, driving shaft 1, driven shaft 8, intermeshing synchromesh gear 2 and 12, synchromesh gear 6 and 10, eccentric block 3,5,9,13; The mode that synchromesh gear 2 is connected with key with eccentric block 3 is fixed on driving shaft 1; Also comprise that the mode connecting with key is fixed on the adjusting gear 4 on driving shaft 1, engage and be processed with the adjusting gear 11 on the driven shaft 8 of internal helix spline with adjusting gear 4, in the middle of driven shaft 8, be processed into the large helical pitch spiral external splines coordinating with adjusting gear 11; Aforementioned synchromesh gear 10 and eccentric block 9 are processed with internal spline, and driven shaft 8 right-hand members are processed into the external splines coordinating with synchromesh gear 10 and eccentric block 9; Aforementioned synchromesh gear 6 and eccentric block 5 are fixed on holding screw on the axle sleeve that can rotate around driving shaft 1, and aforementioned synchromesh gear 12 and eccentric block 13 are fixed on holding screw on the axle sleeve that can rotate around driven shaft 8; External splines is processed in 8 two ends of driven shaft, is supported on bearing by the axle sleeve 7 and 14 that is processed with internal spline; The piston rod of hydraulic cylinder 16 is fixing with driven shaft 8 by thrust bearing 15, can realize moving axially of driven shaft 8 by the flexible of piston rod.

Further structure according to the present invention is described its operation principle below: when vibrator work, power drives driving shaft 1 by the belt pulley 17 that is fixed on driving shaft 1, by adjusting gear 4, power is input to driven shaft, by synchromesh gear 2 and 12, synchromesh gear 6 and 10 engage, make eccentric block 3,5,9,13 rotations, wherein eccentric block 3 and 13 composition the first eccentric block groups, eccentric block 5 and 9 composition the second eccentric block groups. In the time will changing eccentric moment, flexible by hydraulic cylinder 16 piston rods, drive driven shaft generation axial displacement, under the effect of large helical pitch helical spline, adjusting gear 11 rotates, drive driving shaft rotation by adjusting gear 4, and then drive eccentric block 3 and 13 rotations by synchromesh gear 2 and 12, now the first eccentric block group and the second eccentric block group produce phase difference. The control piston throw of lever, can realize the change of 0-180 ° of two groups of eccentric block group phase difference, and then realizes any adjustment to vibrator eccentric moment.

Claims

1. an adjustable square vibrator, comprises belt pulley (17), casing (18), driving shaft (1), driven shaft (8), intermeshing synchromesh gear (2) and (12), synchromesh gear (6) and (10), eccentric block (3), (5), (9), (13); The mode that described synchromesh gear (2) is connected with key with eccentric block (3) is fixed on driving shaft (1), it is characterized in that: also comprise that the mode connecting with key is fixed on the adjusting gear (4) on driving shaft (1), engage and be processed with the adjusting gear (11) on the driven shaft (8) of internal helix spline with adjusting gear (4), in the middle of described driven shaft (8), be processed into the large helical pitch spiral external splines coordinating with adjusting gear (11); Described synchromesh gear (10) and eccentric block (9) are processed with internal spline, and described driven shaft (8) right-hand member is processed into the external splines coordinating with synchromesh gear (10) and eccentric block (9); Described synchromesh gear (6) and eccentric block (5) are fixed on can be on the axle sleeve of driving shaft (1) rotation, and described synchromesh gear (12) and eccentric block (13) are fixed on can be on the axle sleeve of driven shaft (8) rotation; External splines is processed in (8) two ends of described driven shaft, is supported on bearing by the axle sleeve (7) and (14) that are processed with internal spline; Described driven shaft (8) is connected with and can makes it produce axially movable device.

2. the adjustable square vibrator of one as claimed in claim 1, it is characterized in that described to make driven shaft (8) produce axially movable device be hydraulic cylinder (16), the piston rod of described hydraulic cylinder (16) is fixing by thrust bearing (15) and driven shaft (8), can realize moving axially of driven shaft (8) by the flexible of piston rod.

3. the adjustable square vibrator of one as claimed in claim 1, it is characterized in that synchromesh gear (6) and eccentric block (5) are fixed on holding screw on the axle sleeve that can rotate around driving shaft (1), synchromesh gear (12) and eccentric block (13) are fixed on holding screw can be on the axle sleeve of driven shaft (8) rotation.