CN101767279B

CN101767279B - Gear contacting and coloring adjustment method of large heavy-load gear box

Info

Publication number: CN101767279B
Application number: CN2009101030018A
Authority: CN
Inventors: 杨有生; 杜昌烈; 刘彦波; 冯健; 杨军
Original assignee: Chongqing Gearbox Co Ltd
Current assignee: Chongqing Gearbox Co Ltd
Priority date: 2009-01-04
Filing date: 2009-01-04
Publication date: 2011-03-30
Anticipated expiration: 2029-01-04
Also published as: CN101767279A

Abstract

The invention discloses a gear contacting and coloring adjustment method of a large heavy-load gear box, comprising the following steps of: firstly, theoretically analyzing the direction and the amplitude of a radial force born by each bearing of two shafts of a gear pair; and then, loading at a position close to the bearings of the two shafts on the gear pair, ensuring that a loading force is same as the radial force born by each bearing and carrying out coloring adjustment in the loading state. The invention can truly reflect the meshing condition of the gear pair in the actual working state, solve the unbalanced loading problem of the gear pair during actual work and offset the processing errors of various parts of the gear box, thereby ensuring favorable contact of the gear pair during actual work; and the gear pair has stable and reliable work and low noise, is especially practical for the condition that the large gear box cannot carry out test in a factory.

Description

The gear contacting and coloring adjustment method of large heavy-load gear box

Technical field

The invention belongs to gear contacting and coloring adjustment method, specifically, relate to a kind of helical gear contacting and coloring adjustment method of large heavy-load gear box.

Background technology

The painted adjustment of assembling of gear pair is at present all carried out under gear non-stress state.For the helical gear pair of large heavy-load gear box, the axial force reason of helical teeth during owing to work, it is inconsistent making a direction of the power that the two end supports bearing is suffered.Simultaneously owing to the big reason of large size bearing play, axial line at painted good gear pair under the non-stress state is parallel no longer just under the work stress, that is to say that painted good gear pair unbalance loading can occur under the non-stress state when work, the big more unbalance loading of bearing radial gap is serious more.We when carrying out gear box designs, though also can be in the design with repairing to the unbalance loading that solves to a certain degree, the thermal deformation when comprising strain behind the strength of gear and gear pair work can not solve the unbalance loading problem of large heavy-load gear box.The large heavy-load gear box experiment of in factory, can not loading, gear contact situation often can not correctly be adjusted, and serious unbalance loading often appears in gear during actual the use, also can occur major accidents such as broken teeth when serious.With certain large-scale reductor is example, the radial clearance of bearing is 0.6mm, if at this moment still carry out the painted adjustment of gear according to conventional method, axis tilts will make the contact error of gear pair on the teeth directional direction to increase much during work, the contact error of gear pair on the teeth directional direction increases 0.0935mm, much larger than the tooth alignment error 0.022 of gear, serious unbalance loading will appear in gear pair.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of gear contacting and coloring adjustment method of large heavy-load gear box, the painted result of the gear that this method of adjustment obtains can reflect the engagement situation of actual working state lower tooth wheel set truly, thereby contact is good when guaranteeing the gear pair real work, unbalance loading and offset the mismachining tolerance of each part of gear-box when solving the gear pair work that conventional coloring adjustment method caused.

For solving above technical problem, the present invention includes the contacting and coloring state of adjusting gear pair by the bearing eccentric bushing, its key is, carries out as follows:

At first theory analysis goes out when real work, the radial load direction and the size of being born on each bearing of gear pair diaxon;

Then the gear pair diaxon is loaded, the rotation axis measurement that makes diaxon is consistent and carry out painted adjustment during with actual working state, and its detailed process is,

(1), the position near two bearings applies a power identical with this end bearing force in radial respectively on first of gear pair;

(2), when keeping described first two loading force, in gear pair on associated second near the position of two bearings apply respectively one with second power that each end bearing force in radial is identical;

(3), when keeping described first and second described loading force in two ends, on the gear pair flank of tooth, smear colouring agent, axle is wherein carried out jiggering check whether the painted situation of gear reaches the contact (area) pattern requirement of the corresponding accuracy class of gear, if do not reach requirement as yet then the bearing eccentric bushing is progressively adjusted till contact (area) pattern reaches requirement, then the end face of each bearing eccentric bushing is fixed with alignment pin and casing.

As preferably, in the casing assembling before painted adjustment, the pair of bearings of radial clearance difference minimum in the being equipped with bearing is assembled on the same axis.

The present invention has good practicability to large-scale helical gear device, because the helical gear axial force, its bearings at both ends is inequality to the direction of the radial load of the axle that supported.In theory, be applied to the radial load size and Orientation on each spring bearing in the time of can analyzing the gear-box real work, thereby this method of adjustment painted is adjusted under the situation of each loading and carries out, position near two bearings on each applies this bearing force in radial direction force identical with size that a theory analysis spendes, just can simulate axle residing position when work, under this stress state, adjust eccentric bushing and make gear pair painted good.Like this, the contacting and coloring adjustment of carrying out in the case can reflect the engagement situation of actual working state lower tooth wheel set truly, and the flank of tooth of the painted situation in gear pair when assembling during with real work contacts the situation unanimity.Facts have proved that adopt this method to carry out the gear pair stable working of painted adjustment, noise is low.

The invention has the beneficial effects as follows: it is consistent that the flank of tooth of the painted result of gear who obtains in gear pair assembling is adjusted during with real work contacts situation, the engagement situation that can reflect actual working state lower tooth wheel set truly, thereby contact is good when guaranteeing the gear pair real work, gear pair stable working, reliable, noise is low, especially situation about can not test in factory for the large gear case is very practical.

Description of drawings

Fig. 1 carries out the schematic diagram that contacting and coloring is adjusted for loading among the embodiment.

The specific embodiment

As shown in Figure 1, a kind of large heavy-load gear box comprises first 1 (gear shaft) and second 2 of gear is housed, on first 1 two bearings, be with bearing eccentric bushing 4, on second 2 two bearings, be with the contacting and coloring adjustment of bearing eccentric bushing 5, two gears, carry out as follows:

At first theory analysis goes out when real work, and each bearing bore on first 1 and second 2 of the gear pair radial load direction and size are to obtain as loading force direction and the size of simulating each duty;

And then first 1 and second 2 loaded, the rotation axis measurement that makes diaxon is consistent and carry out painted adjustment during with actual working state, and its detailed process is:

(1), by shown in Figure 1, fix one first 1 upper end and load frock 3, load frock 3 and be connected with first 1 axial end, then loading force F1 on the footstalk 3b of loading frock 3 by its terminal pad 3a; On first 1 near the position loading force F2 of its underpart bearing, the direction of the first 1 two bearings force in radial that the direction of loading force F1 and F2 and size go out with theory analysis respectively and big or small identical.

(2), when keeping first 1 two ends loading force F1 and F2, apply power F3 and F4 by the fixing loading frock 3 in its end respectively by the two ends at second 2 shown in Figure 1.Load frock 3 and is connected with second 2 axial end by its terminal pad 3a, the direction of the direction of power F3 and F4 and the big or small second 2 two bearings force in radial that goes out with theory analysis respectively is with big or small identical.

(3), on keeping first 1 and second 2 in each loading force, on the gear pair flank of tooth, smear colouring agent, slowly rotation is first 1, jiggering checks whether the painted situation of gear reaches the contact (area) pattern requirement of the corresponding accuracy class of gear, if do not reach requirement as yet then according to the deflection situation, bearing

eccentric bushing

4 and 5 is rotated adjustment, till contact (area) pattern reaches requirement, then that the end face of each bearing eccentric bushing is fixing with alignment pin and casing 6.

Claims

1. the gear contacting and coloring adjustment method of a large heavy-load gear box comprises the contacting and coloring state of adjusting gear pair by the bearing eccentric bushing, it is characterized in that carrying out as follows:

At first theory analysis goes out when real work, the radial load direction and the size of being born on each bearing of gear pair diaxon; The gear pair diaxon is respectively first and second;

(1), the position of the bearing at close first two ends loads a power identical with the bearing force in radial at first two ends respectively on first of gear pair;

(2), when keeping described first two loading forces, in gear pair with on first second of matching, load a power identical respectively with the bearing force in radial at second two ends near the position of the bearing at second two ends;

(3), in the loading force that keeps described first and second two ends, on the gear pair flank of tooth, smear colouring agent, axle is wherein carried out jiggering check whether the painted situation of gear reaches the contact (area) pattern requirement of the corresponding accuracy class of gear, if do not reach requirement as yet then the bearing eccentric bushing of diaxon is progressively adjusted till contact (area) pattern reaches requirement, then the end face of the bearing eccentric bushing of diaxon is fixed with alignment pin and casing.