CN213511910U - Special speed reducer for single-screw plastic extruder - Google Patents

Abstract

The utility model relates to a special speed reducer of single screw plastic extruder, input gear meshing transmission cylindrical gear drive, cylindrical gear drive and the epaxial output gear meshing of extruding machine hollow shaft, extruding machine hollow shaft one end is supported in first self-aligning bearing outer end through gland encapsulation crimping, the middle part of extruding machine hollow shaft supports on speed reducer box opposite side through second self-aligning bearing, first self-aligning bearing the inner through set location and this end and output gear within a definite time set up the distance ring, second self-aligning bearing outer end sets up the distance ring through set location and between its inner end and output gear, the extruding machine hollow shaft other end is worn out speed reducer box opposite side and is supported on the outside bearing frame through the bolt external through thrust roller bearing, extruding machine hollow shaft other end tip is through oil blanket lid encapsulation bearing frame. The structure is compact, the bearing is large, the operation is stable, and the noise is low.

Description

Special speed reducer for single-screw plastic extruder

Technical Field

The utility model relates to a speed reducer, the special speed reducer of single screw plastic extruder specifically says so.

Background

Plastic screw extruders generally need to be equipped with a high-precision hard-tooth surface reducer as a transmission part. Because the epidemic situation influences, need and the foreign trade reduces the condition under, in order to reduce the stock of the cylindrical gear speed reducer of product structure commonly used, need improve it and relate to the messenger can satisfy the single screw plastic extruder to its speed reduction driven volume, bear, the noise and the higher requirement of transmission stationarity, efficiency.

Disclosure of Invention

The utility model provides a compact structure bears the weight of big, operates steadily, the special speed reducer of single screw plastic extruder that the noise is low.

The utility model adopts the technical proposal that: the utility model provides a special speed reducer of single screw plastic extruder, includes speed reducer box, input gear shaft, roller gear drive and extruding machine hollow shaft, input gear shaft meshing transmission roller gear drive, roller gear drive and the output gear meshing of extruding machine hollow shaft one end, its characterized in that: the extruding machine hollow shaft one end supports the first self-aligning bearing outer end on speed reducer box one side through gland encapsulation crimping, the middle part of extruding machine hollow shaft supports on speed reducer box opposite side through second self-aligning bearing, first self-aligning bearing inner sets up the distance ring through the position sleeve location of location joint on the speed reducer box and between this end and output gear, second self-aligning bearing outer end sets up the distance ring through the position sleeve location of location joint on the speed reducer box and between its inner end and output gear, the extruding machine hollow shaft other end is worn out speed reducer box opposite side and is supported on the outside bearing frame through the bolt of speed reducer box opposite side through thrust roller bearing, extruding machine hollow shaft other end tip is through oil blanket encapsulation bearing frame.

Furthermore, one end of the hollow shaft of the plastic extruding machine is of a solid structure, the other end of the hollow shaft of the plastic extruding machine is of a hollow structure, and the hollow structure extends out of the speed reducer case body.

Furthermore, one end of a hollow shaft of the extruding machine is connected on the pressure cover in a penetrating way through a framework oil seal.

Furthermore, a locking nut and an elastic gasket are arranged in the gland, the locking nut is screwed at one end of the hollow shaft of the plastic extruding machine and is in compression joint with the outer end of the first self-aligning bearing through the elastic gasket.

Furthermore, the cylindrical gear transmission mechanism comprises an intermediate shaft, an intermediate input gear and an intermediate output gear, wherein the intermediate input gear and the intermediate output gear are connected to the intermediate shaft in a penetrating mode, a tooth part of the input gear shaft is meshed with the intermediate input gear, and the intermediate output gear is meshed with an output gear on one end of a hollow shaft of the plastic extruding machine.

The utility model discloses improve on the basis of traditional cylindrical gear speed reducer, change the output shaft into the dedicated extruding machine hollow shaft of extruding machine, to the great extruding machine hollow shaft of diameter, from its one end sealed through the skeleton oil blanket in proper order, lock nut locking, the aligning bearing supports, the position sleeve location, the distance ring is spacing, combine the other end to fix a position through the position sleeve in proper order, the aligning bearing supports, the distance ring is spacing, realize its stability, firm support, be favorable to ensureing the steady operation that the extruding machine low-speed bore greatly bore, simultaneously at extruding machine hollow shaft hollow section external bearing frame, the bearing frame bears the axle that axial load is main through thrust roller bearing to the extruding machine hollow shaft once more, radial joint load, combine the encapsulation of oil blanket, further improve bearing capacity, improve its safety in utilization simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the speed reducer comprises a speed reducer box body 1, an input gear shaft 2, an intermediate input gear 3, an intermediate shaft 4, an intermediate output gear 5, a plastic extruding machine hollow shaft 6, a gland 7, a first self-aligning bearing 8, a second self-aligning bearing 9, a first positioning sleeve 10, a first distance ring 11, a second positioning sleeve 12, a second distance ring 13, a bearing seat 14, a thrust roller bearing 15, an oil seal blank cover 16, a locking nut 17, an elastic cushion 18, a framework oil seal 19 and an output gear 20.

Detailed Description

The following further description is made in conjunction with the accompanying drawings and examples.

FIG. 1 shows: a speed reducer special for a single-screw plastic extruder comprises a speed reducer box body 1, an input gear shaft 2, an intermediate input gear 3, an intermediate shaft 4, an intermediate output gear 5, a plastic extruder hollow shaft 6, a gland 7, a first self-aligning bearing 8, a second self-aligning bearing 9, a first positioning sleeve 10, a first distance ring 11, a second positioning sleeve 12, a second distance ring 13, a bearing seat 14, a thrust roller bearing 15, an oil seal cover 16, a locking nut 17, an elastic pad 18, a framework oil seal 19 and an output gear 20.

The input gear shaft 2, the intermediate shaft 4 and the hollow shaft 6 of the plastic extruding machine are sequentially supported in the box body 1 of the speed reducer in a parallel and cross-connection manner, the tooth part of the input gear shaft 2 is meshed with the intermediate input gear 3 sleeved on the intermediate shaft 4, and the intermediate output gear 5 on the intermediate shaft 4 is meshed with the output gear 20 on the hollow shaft of the plastic extruding machine; one end of a hollow shaft 6 of the plastic extruding machine on one side of an input gear shaft 2 is encapsulated, pressed and supported at the outer end of a first self-aligning bearing 8 on one side of a speed reducer box body through a framework oil seal 19 and a gland 7, a locking nut 17 and an elastic cushion 18 are arranged in the gland 7, the locking nut is screwed at one end of the hollow shaft of the plastic extruding machine and is pressed and supported at the outer end of the first self-aligning bearing 8 through the elastic cushion, the inner end of the first self-aligning bearing 8 is positioned through a first positioning sleeve 10 which is positioned and clamped on the speed reducer box body, a first distance ring 11 is arranged between the end and an output gear 20, the middle part of the hollow shaft 6 of the plastic extruding machine is supported at the other side of the speed reducer box body through a second self-aligning bearing 9, the outer end of the second self-aligning bearing 9 is positioned through a second positioning sleeve 12 which is positioned and clamped on the speed reducer box body, the bearing seat is sealed by an oil seal blank cap 16 at the other end of the hollow shaft of the plastic extruding machine.

In the embodiment, one end of the hollow shaft of the extruding machine is of a solid structure, the other end of the hollow shaft of the extruding machine is of a hollow structure, and the hollow structure extends out of the speed reducer case body, so that the extruding machine is suitable for being used by the extruding machine stably and in a large bearing mode.

Claims (5)

1. The utility model provides a special speed reducer of single screw plastic extruder, includes speed reducer box, input gear shaft, roller gear drive and extruding machine hollow shaft, input gear shaft meshing transmission roller gear drive, roller gear drive and the output gear meshing of extruding machine hollow shaft one end, its characterized in that: the extruding machine hollow shaft one end supports the first self-aligning bearing outer end on speed reducer box one side through gland encapsulation crimping, the middle part of extruding machine hollow shaft supports on speed reducer box opposite side through second self-aligning bearing, first self-aligning bearing inner sets up the distance ring through the position sleeve location of location joint on the speed reducer box and between this end and output gear, second self-aligning bearing outer end sets up the distance ring through the position sleeve location of location joint on the speed reducer box and between its inner end and output gear, the extruding machine hollow shaft other end is worn out speed reducer box opposite side and is supported on the outside bearing frame through the bolt of speed reducer box opposite side through thrust roller bearing, extruding machine hollow shaft other end tip is through oil blanket encapsulation bearing frame.

2. The speed reducer special for the single-screw plastic extruder as claimed in claim 1, wherein: one end of the hollow shaft of the plastic extruding machine is of a solid structure, the other end of the hollow shaft of the plastic extruding machine is of a hollow structure, and the hollow structure extends out of the speed reducer case.

3. The speed reducer special for the single-screw plastic extruder as claimed in claim 1, wherein: one end of the hollow shaft of the plastic extruding machine is connected on the press cover in a penetrating way through a framework oil seal.

4. The speed reducer special for the single-screw plastic extruder as claimed in claim 1, wherein: and a locking nut and an elastic gasket are arranged in the gland, the locking nut is screwed at one end of the hollow shaft of the plastic extruding machine and is in compression joint with the outer end of the first self-aligning bearing through the elastic gasket.

5. The speed reducer special for the single-screw plastic extruder as claimed in claim 1, wherein: the cylindrical gear transmission mechanism comprises an intermediate shaft, an intermediate input gear and an intermediate output gear, wherein the intermediate input gear and the intermediate output gear are connected to the intermediate shaft in a penetrating mode, a tooth portion of the input gear shaft is meshed with the intermediate input gear, and the intermediate output gear is meshed with an output gear on one end of a hollow shaft of the plastic extruding machine.

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