CN212131244U - Novel phase adjustment structure of supporting speed reducer spline spindle nose of twin-screw tear machine - Google Patents

Abstract

The twin-screw shredder is equipped with a new phase adjustment structure of the spline shaft head of the reducer, including the transmission shaft, the short output shaft, the long output shaft and the box body. The transmission shaft, the short output shaft and the long output shaft are respectively connected to the box through the bearing rotation. In the body, the short output shaft is located between the transmission shaft and the long output shaft, a driving gear is installed on the upper end of the long output shaft, and a first transmission gear is installed on the short output shaft; The use of bolts increases the system error, reduces the precision of spline phase adjustment and the reliability of the transmission system, and at the same time increases the workload of assembly.

Description

A new phase adjustment structure for the spline shaft head of the reducer matched with the twin-screw shredder

technical field

The utility model relates to a novel phase adjustment structure for a double-screw shredder matched with a spline shaft head of a reducer.

Background technique

At present, in the twin-screw extrusion granulator reducer industry at home and abroad, there is a method of fixing gears, that is, the number of teeth of each gear of the reducer and the number of spline teeth of the output shaft are specified in the design, and the relative position of each tooth is controlled during processing. and tooth thickness tolerance, during assembly, one of the shafts is fixed and then the other shafts are rotated to achieve the same spline phase of the two output shafts; however, this method limits the design flexibility, increases the processing cost of the reducer shaft and gear, and reduces the The processing efficiency of the gear is improved, and the assembly is also time-consuming and labor-intensive.

In addition, the reducer used in the twin-screw extrusion and kneading machine in China adopts a spline phase adjustment structure of "ring gear + hub + tensioning sleeve" (as shown in Figure 1). The sleeve 102, the shaft 103, the key 105, the hub 106, and the bolt 107 form the structure, wherein the hub 106 is fixed on the ring gear 101 with bolts 107, and its stop is matched with the inner hole of the ring gear 101. The shaft 103 is matched, and the outer circle of the expansion sleeve 102 is matched with the inner hole of the ring gear 101; when adjusting the spline phase, loosen the bolts 107 and the bolts of the expansion sleeve 102, so that the hub 106 and the ring gear 101 can rotate relatively freely. After designing the required spline phase, tighten the bolts 107 and the bolts on the expansion sleeve 102; however, this spline adjustment structure has the following disadvantages for the reducer matched with the twin-screw shredder: due to the existence of the bearing 104 and the bearing 108, As a result, the wrench space of the bolt 107 and the expansion sleeve 102 is quite compact, resulting in constant adjustment and low assembly work efficiency.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a novel phase adjustment structure for a twin-screw shredder matched with a spline shaft head of a reducer, which is simple in structure, convenient in adjustment and high in reliability.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the novel phase adjustment structure of the double-screw shredder matching the spline shaft head of the reducer, including the transmission shaft, the short output shaft, the long output shaft and the box body, the transmission shaft, The short output shaft and the long output shaft are respectively connected in the box through the bearing rotation, the short output shaft is located between the transmission shaft and the long output shaft, a driving gear is installed on the upper end of the long output shaft, and a first transmission gear is installed on the short output shaft, An adjustment gear is installed on the upper end of the transmission shaft, the adjustment gear meshes with the driving gear, and a second transmission gear meshed with the first transmission gear is installed on the transmission shaft. The lower ends of the box, the short output shaft and the long output shaft are all spline structures;

The lower end surface of the transmission shaft is fixed with an outer hexagonal bolt, the top surface of the box is provided with a through hole, and the through hole is arranged coaxially with the transmission shaft. The inner circle of the adjustment gear is a stepped hole, and the upper end of the transmission shaft is provided with a stepped structure. The gear is installed at the stepped structure on the upper end of the transmission shaft, the adjustment gear is installed on the upper end of the transmission shaft through an expansion sleeve, and the expansion sleeve is installed in the stepped hole of the adjustment gear.

By adopting the above technical scheme, the utility model has the following beneficial effects: compared with the existing "fixed gear" mode, the adjusting structure of the present utility model can flexibly realize the function of "spline phase adjustment"; Compared with the "wheel hub+expansion sleeve" method, the utility model is convenient and quick, the spline phase adjustment precision is high, and the reliability is high; Compared with the conventional method, the gear processing cost is low and the assembly efficiency is low; and the utility model reduces the use of keys, hubs and bolts, which increases the system error, reduces the precision of spline phase adjustment and the reliability of the transmission system, and at the same time increases the Assembly workload.

Description of drawings

Fig. 1 is the structural representation of the traditional spline phase adjustment structure;

Fig. 2 is the structural representation of the present utility model;

Fig. 3 is the enlarged view of A place in Fig. 2;

FIG. 4 is a schematic structural diagram of glasses tooling.

Detailed ways

As shown in Figures 2 and 3, the twin-screw shredder of the present utility model is equipped with a novel phase adjustment structure of the spline shaft head of the reducer, including a transmission shaft 1, a short output shaft 2, a long output shaft 3 and a box body 4, The transmission shaft 1, the short output shaft 2 and the long output shaft 3 are respectively connected in the box 4 through the bearing rotation, the short output shaft 2 is located between the transmission shaft 1 and the long output shaft 3, and the upper end of the long output shaft 3 is installed with a driving gear 5. A first transmission gear 6 is installed on the short output shaft 2, an adjustment gear 7 is installed on the upper end of the transmission shaft 1, the adjustment gear 7 meshes with the driving gear 5, and the transmission shaft 1 is installed on the transmission shaft 1 meshes with the first transmission gear 6. The second transmission gear 8, the lower ends of the short output shaft 2 and the long output shaft 3 both pass downward out of the box 4, and the lower ends of the short output shaft 2 and the long output shaft 3 are both spline structures 9;

The lower end surface of the transmission shaft 1 is fixed with an outer hexagonal bolt 10, the top surface of the box body 4 is provided with a through hole 11, and the through hole 11 is arranged coaxially with the transmission shaft 1. The inner circle of the adjusting gear 7 is a stepped hole. The upper end is provided with a stepped structure, the adjustment gear 7 is installed at the stepped structure of the upper end of the transmission shaft 1, the adjustment gear 7 is installed on the upper end of the transmission shaft 1 through the expansion sleeve 12, and the expansion sleeve 12 is installed on the adjustment gear 7. inside the step hole.

In the utility model, the adjusting gear 7 is installed on the upper end of the transmission shaft 1 through the expansion sleeve 12, the outer circle of the expansion sleeve 12 is matched with the inner hole of the adjustment gear 7, and the expansion sleeve 12 plays the role of transmitting torque; the adjustment The gear 7 is not installed in the inner hole of the expansion sleeve 12, and the outer circle of the transmission shaft 1 adopts a clearance fit to play a centering role; the upper end of the transmission shaft 1 is provided with a stepped structure, which plays an axial positioning role; the transmission shaft 1 and the expansion The size of the inner hole of the tightening sleeve 12 is smaller than the size of the inner hole of the transmission shaft 1 and the adjustment gear 7, which is convenient to install the adjustment gear 7; Tighten the bolts on the expansion sleeve 12.

During the adjustment of the utility model, the bolts of the expansion sleeve 12 are loosened. At this time, there is a gap between the inner hole of the expansion sleeve 12 and the outer diameter of the transmission shaft 1, and there is also a gap between the outer circle of the expansion sleeve 12 and the inner hole of the adjustment gear 7. The gear 7 is not installed on the inner hole of the expansion sleeve 12 and there is a small gap between the outer circle of the transmission shaft 1. At this time, a socket wrench can be used to set the outer hexagonal bolt 10 at the lower end of the transmission shaft 1 to fix the transmission shaft 1. Use a crowbar to pry the adjustment gear 7 to make it rotate relative to the transmission shaft 1, and at the same time manually turn the long output shaft 3 and the short output shaft 2 to make the working surfaces of the gear pairs on it fit together. The "glasses tooling" for the phase can be sleeved on the spline structure 9 at the lower end of the long output shaft 3 and the short output shaft 2 at the same time. The eyewear tooling is shown in Figure 4, and the "glasses tooling" can slide smoothly along the axial direction to explain the splines If the phase adjustment is successful, if not, repeat the above steps until the spline phase adjustment is successful.

In addition, the phases of the two inner splines of the glasses tooling are the same, and the parameters of the inner splines are matched with the spline structures 9 at the lower ends of the long output shaft 3 and the short output shaft 2, and the parameters are exactly the same.

After adjusting the spline phase successfully, keep the glasses tooling installed on the spline structure 9 at the lower end of the long output shaft 3 and the short output shaft 2, and then tighten the tightening sleeve 12 bolts one by one according to the regulations. After the bolts are tightened, the long output shaft 3 and The phase adjustment of the spline structure 9 at the lower end of the short output shaft 2 is completed.

After the adjustment is completed, manually turn the input shaft of the reducer to any angle position according to the work direction, and the glasses tooling can be easily put on the long output shaft 3 splines and the short output shaft 2 splines at the same time, and the "glasses tooling" can be axially Glides smoothly.

This embodiment does not limit the shape, material, structure, etc. of the present invention in any form, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the technology of the present invention. The scope of protection of the program.

Claims (1)

1. The supporting novel phase adjustment structure of speed reducer spline spindle nose of twin-screw tear machine, its characterized in that: the transmission shaft, the short output shaft and the long output shaft are respectively connected in the box body in a rotating mode through bearings, the short output shaft is located between the transmission shaft and the long output shaft, a driving gear is installed at the upper end of the long output shaft, a first transmission gear is installed on the short output shaft, an adjusting gear is installed at the upper end of the transmission shaft and meshed with the driving gear, a second transmission gear meshed with the first transmission gear is installed on the transmission shaft, the lower end portions of the short output shaft and the long output shaft penetrate out of the box body downwards, and the lower end portions of the short output shaft and the long output shaft are both of spline structures;

the lower terminal surface of transmission shaft is fixed with outer hexagonal bolt, and the through-hole has been seted up to the top surface of box, and the through-hole sets up with the transmission shaft coaxial line, and circle is the step hole in the adjusting gear, and the upper end of transmission shaft is provided with the stair structure, and the adjusting gear is installed in the stair structure department of the upper end of transmission shaft, and the adjusting gear is installed at the transmission shaft upper end through the tight cover that expands, and the tight cover that expands is installed in the step hole of adjusting gear.

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