阅读说明：本技术 一种同向双螺杆减速机双输出轴的相位调整装置及方法 (Phase adjusting device and method for double output shafts of homodromous double-screw speed reducer ) 是由 吴俊功 贾朝阳 赵骞 孙庆威 薛彭浩 王昊 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种同向双螺杆减速机双输出轴的相位调整装置及方法,属于挤出机相位调整技术领域。该相位调整装置包括输入齿轮轴、大齿轮、长输出齿轮轴、换向齿轮、涨紧套、齿轮、短输出齿轮轴和过渡花键轴。本发明通过设置涨紧套使换向齿轮与过渡花键轴连接或断开,从而通过转动换向齿轮和长输出齿轮轴,使长输出齿轮轴与短输出齿轮轴上花键的相位一致,并经相位工装检测合格。本发明具有确保减速机两输出轴相位调整精确,且操作方便的优点。(The invention discloses a device and a method for adjusting phases of double output shafts of a co-rotating double-screw speed reducer, and belongs to the technical field of phase adjustment of extruders. The phase adjusting device comprises an input gear shaft, a large gear, a long output gear shaft, a reversing gear, a tensioning sleeve, a gear, a short output gear shaft and a transition spline shaft. The invention enables the reversing gear to be connected with or disconnected from the transition spline shaft by arranging the tensioning sleeve, thereby enabling the phases of the splines on the long output gear shaft and the short output gear shaft to be consistent by rotating the reversing gear and the long output gear shaft, and being qualified by the detection of the phase tool. The invention has the advantages of ensuring accurate phase adjustment of the two output shafts of the speed reducer and convenient operation.)

1. A phase adjusting device for double output shafts of a co-rotating double-screw speed reducer is characterized by comprising an input gear shaft (1), a large gear (2), a long output gear shaft (3), a reversing gear (4), a tensioning sleeve (11), a transition spline shaft (7), a gear (5) and a short output gear shaft (6);

the input gear shaft (1) is connected to the main motor through an elastic coupling; the input gear shaft (1) transmits torque to the large gear (2) through the primary gear pair, and the large gear (2) is connected to the long output gear shaft (3); the long output gear shaft (3) is connected with a screw rod of the main machine, and meanwhile, the long output gear shaft (3) transmits torque to the reversing gear (4) through the secondary gear pair; the reversing gear (4) is connected to one end of the transition spline shaft (7) through a tensioning sleeve (11), and the other end of the transition spline shaft (7) is connected with the gear (5); the gear (5) transmits the torque to a short output gear shaft (6) through a three-level gear pair, and the short output gear shaft (6) is connected with the other screw of the main machine;

the tensioning sleeve (11) comprises an inner ring (9), an outer ring (8) and a bolt (10); wherein, the conicity of the inner ring (9) and the outer ring (8) is 1: 12; the inner ring (9) and the outer ring (8) are sequentially sleeved outside the reversing gear (4), and a plurality of bolts (10) which are uniformly distributed along the circumferential direction penetrate through the outer ring (8) and the reversing gear (4) along the axial direction to generate radial force so as to tightly tension the reversing gear (4) and the transition spline shaft (7).

2. The phase adjusting device for the double output shafts of the co-rotating double-screw speed reducer is characterized in that the reversing gear (4) and the transition spline shaft (7) are assembled in a clearance fit mode, and the assembly tolerance is phi DH7/g 6.

3. A method of phase adjustment using the phase adjustment device of claim 1 or 2, characterized by the following procedure:

when whole double screw speed reducer assembly, install whole gear pairs earlier, make long output gear axle (3) and reversing gear (4), gear (5) and short output gear axle (6) mesh simultaneously, the phase place of spline has two kinds of situations on long output gear axle (3), the short output gear axle (6) this moment:

1) when the phases of the splines on the long output gear shaft (3) and the short output gear shaft (6) are consistent, the phase detection tool is used for detecting the qualified phase: at the moment, a plurality of bolts of the upward tensioning sleeve of the reversing gear (4) are directly screwed down according to a given torque value, and phase installation and adjustment work of long and short output gear shafts is completed;

2) when the phase place nonconformity of spline on long output gear axle (3), short output gear axle (6), can not detect through the phase place frock: at the moment, the tensioning sleeve (11) is firstly loosened, and the connection between the reversing gear (4) and the transition spline shaft (7) is disconnected; then the reversing gear (4) is rotated to drive the long output gear shaft (3) to rotate, so that the phases of the splines on the long output gear shaft (3) and the short output gear shaft (6) are consistent, and the splines are detected to be qualified by a phase tool; and finally, screwing a plurality of bolts of the upward tensioning sleeve of the reversing gear (4) according to a given torque value, and finishing the phase installation and adjustment work of the long and short output gear shafts.

Technical Field

The invention belongs to the technical field of phase adjustment of extruders, and particularly relates to a phase adjustment device and method for double output shafts in a co-rotating double-screw speed reducer.

Background

The co-rotating twin-screw extruder unit is taken as an efficient unit, is favored by plastic factories and raw material factories due to high speed, high efficiency and high torque, and has incomparable superiority particularly in plastic granulation in the petrochemical industry. In the co-rotating twin-screw unit, the center distance of the twin screws of the main machine is small, and the torque required to be transmitted is large, so that higher requirements are provided for the design, manufacture, assembly and the like of the speed reducer. The design of the speed reducer of the co-rotating twin-screw extruder set is relatively complex, wherein one of the design keys is as follows: how to guarantee the phase consistency of the double output shafts of the speed reducer and further guarantee the correct meshing of the screws after the double-screw assembly.

The traditional methods for adjusting the phase of two output shafts of the double-screw speed reducer comprise an accurate design marking method, a key groove matching method, an interference fit high-pressure oil method and the like. The phase adjusting device has the disadvantages that the requirements on the processing and assembling precision are particularly high, special tools need to be manufactured, secondary assembly is needed, the phase adjusting precision is not high, and the phase adjusting device is complex.

Disclosure of Invention

The phase requirements of the double output shafts of the double-screw extruder reducer are consistent, otherwise the correct meshing of the double screws is influenced. In order to solve the problems, the invention provides a device and a method for adjusting the phase of two output shafts in a homodromous double-screw speed reducer, which ensure that the phase of the two output shafts of the speed reducer is accurately adjusted by arranging a tensioning sleeve structure and are convenient to operate.

The technical scheme of the invention is as follows:

a phase adjusting device for double output shafts of a homodromous double-screw speed reducer comprises an input gear shaft 1, a large gear 2, a long output gear shaft 3, a reversing gear 4, a tensioning sleeve 11, a gear 5, a short output gear shaft 6 and a transition spline shaft 7.

The input gear shaft 1 is connected to the main motor through an elastic coupling; the input gear shaft 1 transmits torque to a large gear 2 through a primary gear pair, and the large gear 2 is connected to a long output gear shaft 3; the long output gear shaft 3 is connected with a screw rod of the main machine, and meanwhile, the long output gear shaft 3 transmits torque to the reversing gear 4 through the secondary gear pair; the reversing gear 4 is connected to one end of the transition spline shaft 7 through the tensioning sleeve 11, and the other end of the transition spline shaft 7 is connected with the gear 5; the gear 5 transmits the torque to a short output gear shaft 6 through a three-stage gear pair, and the short output gear shaft 6 is connected with another screw rod of the main machine.

The tensioning sleeve 11 comprises an inner ring 9, an outer ring 8 and a bolt 10. Wherein, the conicity of the inner ring 9 and the outer ring 8 is 1: 12; the inner ring 9 and the outer ring 8 are sequentially sleeved outside the reversing gear 4, and a plurality of high-strength bolts 10 which are uniformly distributed along the circumferential direction axially penetrate through the outer ring 8 and the reversing gear 4, so that a component force of an axial force, namely a radial force, is generated, and the reversing gear 4 and the transition spline shaft 7 are tensioned. The reversing gear 4 and the transition spline shaft 7 are assembled in a clearance fit mode, and the assembly tolerance is phi DH7/g 6.

The method for adjusting the phase by adopting the phase adjusting device comprises the following steps:

when the whole double-screw speed reducer is assembled, all gear pairs are firstly installed, so that the long output gear shaft 3, the reversing gear 4, the gear 5 and the short output gear shaft 6 are meshed simultaneously, and the phases of splines on the long output gear shaft and the short output gear shaft have two conditions:

1) if the phases of the splines on the long output gear shaft and the short output gear shaft are consistent, and the detection is qualified through a phase tool: at the moment, a plurality of bolts of the tensioning sleeve on the reversing gear 4 are directly screwed down according to a given torque value, and the phase installation and adjustment work of the two output shafts is completed.

2) If the phases of the splines on the long output gear shaft and the short output gear shaft are inconsistent, the detection cannot be carried out through a phase tool: at the moment, the tensioning sleeve 11 is firstly loosened, and the connection between the reversing gear 4 and the transition spline shaft 7 is disconnected; then the reversing gear 4 is rotated to drive the long output gear shaft 3 to rotate, so that the phases of the splines on the long output gear shaft 3 and the short output gear shaft 6 are consistent, and the splines are detected to be qualified by a phase tool; and finally, screwing a plurality of bolts of the tensioning sleeve on the reversing gear 4 according to a given torque value, and finishing the phase installation and adjustment work of the two output shafts.

The invention has the beneficial effects that: the invention provides a phase adjusting device and method for double output shafts in a double-screw speed reducer, which ensure accurate phase adjustment of the two output shafts of the speed reducer and are convenient to operate. The device is applied to a co-rotating double-screw extruder set in the plastic industry, and can also be applied to co-rotating double-screw extruder sets in other industries such as the rubber industry.

Drawings

Fig. 1 is a basic structure schematic diagram of a double-screw speed reducer.

FIG. 2 is a schematic view of the assembly of the reversing gear and the transition spline shaft.

Fig. 3 is a phase diagram of the assembly of the dual output shafts of the reducer.

Fig. 4 is a dual output shaft phase tooling diagram.

Fig. 5 is an assembly view of the reversing gear and the tensioning sleeve.

Fig. 6 is a view of the reversing gear.

In the figure: 1 input gear shaft: 2, a bull gear; 3 long output gear shaft; 4, a reversing gear; 5, a gear; 6 short output gear shaft; 7 transition spline shafts; 8, an outer ring; 9 an inner ring; 10, bolts; 11 to tighten the sleeve.

Detailed Description

The invention is further described below with reference to examples and figures.

As shown in fig. 1, the phase adjusting device for double output shafts of a co-rotating twin-screw speed reducer comprises an input gear shaft 1, a large gear 2, a long output gear shaft 3, a reversing gear 4, a tensioning sleeve 11, a gear 5, a short output gear shaft 6 and a transition spline shaft 7.

The input gear shaft 1 is connected to the main motor through an elastic coupling; the input gear shaft 1 transmits torque to a large gear 2 through a primary gear pair, and the large gear 2 is connected to a long output gear shaft 3; the long output gear shaft 3 is connected with a screw rod of the main machine, and meanwhile, the long output gear shaft 3 transmits torque to the reversing gear 4 through the secondary gear pair; the reversing gear 4 is connected to one end of the transition spline shaft 7 through the tensioning sleeve 11, and the other end of the transition spline shaft 7 is connected with the gear 5; the gear 5 transmits the torque to a short output gear shaft 6 through a three-stage gear pair, and the short output gear shaft 6 is connected with another screw rod of the main machine.

As shown in fig. 5 and 6, the tension sleeve 11 comprises an inner ring 9, an outer ring 8 and a bolt 10. Wherein, the conicity of the inner ring 9 and the outer ring 8 is 1: 12; the inner ring 9 and the outer ring 8 are sequentially sleeved outside the reversing gear 4, and a plurality of high-strength bolts 10 which are uniformly distributed along the circumferential direction axially penetrate through the outer ring 8 and the reversing gear 4, so that a component force of an axial force, namely a radial force, is generated, and the reversing gear 4 and the transition spline shaft 7 are tensioned.

The phasing of the twin output shafts of the twin screw extruder reducer must meet the requirements as shown in figure 3 or otherwise affect the proper meshing of the twin screws. Therefore, when the homodromous double-screw speed reducer is assembled, the phase of the double output shafts is ensured to be consistent through the assembling tool shown in figure 4. The phase adjustment is carried out by arranging the tensioning sleeve 11, and the process is as follows:

when the whole double-screw speed reducer is assembled, all gear pairs (as shown in figure 1) are firstly installed, so that the long output gear shaft 3, the reversing gear 4, the gear 5 and the short output gear shaft 6 are meshed simultaneously, and the phases of splines on the long output gear shaft and the short output gear shaft have two conditions:

1) as shown in fig. 3, the optimal state is that the phases of the splines on the long and short output gear shafts are consistent and pass the phase tooling detection (see fig. 4): at the moment, a plurality of bolts of the tensioning sleeve on the reversing gear 4 are directly screwed down according to a given torque value, and the phase installation and adjustment work of the two output shafts is completed.

2) If the phases of the splines on the long output gear shaft and the short output gear shaft are inconsistent, the detection cannot be carried out through the phase tool. The adjusting method at this time is as follows: firstly, loosening bolts of the tensioning sleeves 11, and disconnecting the reversing gear 4 from the transition spline shaft 7, namely, the transition spline shaft 7 does not rotate, and a pair of gear pairs of the gear 5 and the short output gear shaft 6 are not moved; then the reversing gear 4 is rotated to drive the long output gear shaft 3 to rotate (the assembly tolerance of the reversing gear 4 and the transition spline shaft 7 is phi DH7/g6, the reversing gear 4 and the long output gear shaft 3 are in clearance fit and can rotate), and the double output shaft splines are visually observed until the phases of the double output shaft splines are consistent and are qualified through phase tool detection by rotating the pair of gear pairs of the reversing gear 4 and the long output gear shaft 3; and finally, screwing a plurality of bolts of the tensioning sleeve on the reversing gear 4 according to a given torque value to complete the phase installation and adjustment work of the two output shafts.