CN115523260A - Gear worm transmission assembly structure and large ladle machine comprising same - Google Patents

Gear worm transmission assembly structure and large ladle machine comprising same Download PDF

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Publication number
CN115523260A
CN115523260A CN202210575636.3A CN202210575636A CN115523260A CN 115523260 A CN115523260 A CN 115523260A CN 202210575636 A CN202210575636 A CN 202210575636A CN 115523260 A CN115523260 A CN 115523260A
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CN
China
Prior art keywords
worm
self
gear
assembly structure
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210575636.3A
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Chinese (zh)
Inventor
何汝芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Dongru Machinery Equipment Co ltd
Original Assignee
Guizhou Dongru Machinery Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou Dongru Machinery Equipment Co ltd filed Critical Guizhou Dongru Machinery Equipment Co ltd
Priority to CN202210575636.3A priority Critical patent/CN115523260A/en
Publication of CN115523260A publication Critical patent/CN115523260A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing

Abstract

The invention discloses a gear worm transmission assembly structure, which comprises a gear, a worm and a gear-driven rotating mechanism, wherein the worm is supported by at least two self-aligning bearings, and the worm is also provided with double rows of thrust bearings; the inner ring of the self-aligning bearing is fixed with the worm shaft of the worm, the outer ring and the worm shaft both have freedom degrees of sliding along the axial direction, and the double-row thrust bearing is fixedly installed. The invention decomposes the axial force and the radial force generated by the worm during the worm transmission, the axial force is supported by the double-row thrust bearing, the radial force is respectively supported by the self-aligning bearing, the stress structure form is rearranged, the original fixed matching traditional mode is broken through, the movable matching mode is adopted, the service life and the use effect generate substantial leap, and because the structure is a split structure, each part is adjustable, and the influence caused by the processing precision deviation, the installation deviation and the like can be eliminated through debugging.

Description

Gear worm transmission assembly structure and large ladle machine comprising same
Technical Field
The invention relates to a mechanical transmission technology, in particular to a gear worm transmission assembly structure and a large ladle lifter comprising the same.
Background
In the traditional mechanical layout, an outer ring of a self-aligning bearing is fixedly installed, when the outer ring of the self-aligning bearing is fixed, the axial force of a worm can be directly transmitted to an inner ring of the self-aligning bearing and then transmitted to an outer ring through balls, the outer ring is fixed, namely the balls roll under the shearing of dislocation of the inner ring and the outer ring, the friction force is very large, the abrasion to the balls, the inner ring and the outer ring is also very strong, the main bearing direction of the self-aligning bearing is in the radial direction, the condition that the self-aligning bearing is easy to fail is caused in the stress mode, the maintenance period is shortened, and most of the axial force is supported by the self-aligning bearing because the axial freedom degree of a worm shaft is limited by the self-aligning bearing, and a double-row thrust bearing for bearing the axial force does not bear main axial force.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a gear worm transmission assembly structure to solve the technical problems in the background art.
The technical scheme of the invention is as follows:
a gear and worm transmission assembly structure comprises a gear, a worm and a gear-driven rotating mechanism, wherein the worm is supported by at least two self-aligning bearings, and a double-row thrust bearing is further mounted on the worm; the inner ring of the self-aligning bearing is fixed with a worm shaft of the worm, the outer ring and the worm shaft both have freedom degrees sliding along the axial direction, and the double-row thrust bearing is fixedly installed.
Furthermore, the number of the self-aligning bearings is two, the two self-aligning bearings are symmetrically installed at two ends of the worm, and the thrust bearing is located on the outer side of one of the self-aligning bearings.
Furthermore, the self-aligning bearing and the worm shaft are in clearance fit with the shaft seat to slide along the axial direction, and sliding clearances are reserved on two sides of the self-aligning bearing.
Furthermore, the fit clearance of the self-aligning bearing and the worm shaft and the shaft seat is 2-4 threads, and the reserved sliding clearance between the two sides of the self-aligning bearing and the adjacent parts is 60-100 threads.
Furthermore, end covers are arranged at two ends of the shaft seat, the center of each end cover is a shaft hole, the shaft holes are in clearance fit with the worm shaft, and the end surface clearances of the end covers and the end surfaces of two sides of the self-aligning bearing are adjustable.
Furthermore, the end covers are fixed with the two ends of the shaft seat through a plurality of screws, and the gaps between the end covers and the two ends of the shaft seat are adjusted through the screws.
Furthermore, a driven driving part is arranged at one end of the worm and is connected with an active driving part of the power device, and the driven driving part and the active driving part have the freedom degree of sliding along the axial direction of the worm.
Furthermore, the worm is in transmission with the power device through a bevel gear pair, and two bevel gears of the bevel gear pair are in clearance fit.
The invention also provides a large bag lifting machine, and the improvement is that the large bag lifting machine comprises the gear and worm transmission assembly structure.
The invention has the advantages that:
the invention decomposes the axial force and the radial force generated by the worm during the worm transmission, the axial force is supported by the double-row thrust bearing, the radial force is supported by the self-aligning bearing respectively, the stress structure form is rearranged, the original fixed matching traditional mode is broken through, the movable matching mode is adopted, the service life and the use effect generate substantial leap, and the invention has the advantages of split structure, adjustable parts and capability of eliminating the influence caused by processing precision deviation, installation deviation and the like through debugging.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a force analysis diagram of a self-aligning bearing under a conventional interference fit structure;
fig. 3 is a stress analysis diagram of the self-aligning bearing under the clearance assembly structure of the invention.
In the figure: 1-worm, 11-worm shaft, 2-shaft seat, 21-end cover, 22-screw, 3-self-aligning bearing, 4-double-row thrust bearing and 5-bevel gear pair.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-3:
a gear worm transmission assembly structure comprises a gear, a worm 1 and a gear-driven rotating mechanism (the gear and the gear-driven rotating mechanism do not belong to improvement points, so the gear and the gear-driven rotating mechanism are not shown in the figure), the worm 1 is supported by at least two self-aligning bearings 3, and a double-row thrust bearing 4 is also arranged on the worm 1; the inner ring of the self-aligning bearing 3 is fixed with the worm shaft 11 of the worm 1, the outer ring and the worm shaft 11 both have freedom degree of sliding along the axial direction, and the double-row thrust bearing 4 is fixedly installed.
In the present invention, the outer ring of the self-aligning bearing 3 and the worm shaft 11 both have freedom to slide in the axial direction, that is, the outer ring of the self-aligning bearing 3 is not fixed and cannot bear the axial force but can bear the radial force, and since the self-aligning bearing 3 releases the axial freedom of the worm shaft 11 of the worm 1, the axial force will directly act on the double-row thrust bearing 4 (the double-row thrust bearing 4 can be used for bearing the thrust in both directions in the axial direction).
The invention decomposes the axial force and the radial force generated by the worm 1 when the worm 1 is driven, the axial force is supported by the double-row thrust bearing 4, the radial force is supported by the self-aligning bearing 3 respectively, the stress structure form is rearranged, the original fixed matching traditional mode is broken through, the movable matching mode is adopted, the service life and the use effect generate substantial leap, and due to the split structure, each part is adjustable, and the influence caused by the processing precision deviation, the installation deviation and the like can be eliminated through debugging.
According to the length installation and the overall arrangement self-aligning bearing 3 of worm 1, general length if self-aligning bearing 3 be two can, the symmetry is installed at worm 1 both ends, and thrust bearing is located one of them self-aligning bearing 3's the outside. The self-aligning bearing 3 and the worm 1 are in clearance fit with the shaft seat 2 to realize sliding along the axial direction, the fit clearance is 2-4 threads, if the fit clearance is too small, the self-aligning shaft is not easy to slide along the bearing along the axial direction, so that the axial force cannot be well released, and if the clearance is too large, the self-aligning bearing 3 can make circular runout in the bearing hole, so that the vibration of equipment is larger, the sliding clearance is reserved on both sides of the self-aligning bearing 3, the sliding clearance reserved on both sides of the self-aligning bearing 3 and adjacent components is about 60-100 threads, in fact, the worm shaft 11 of the worm 1 is fixed by the double-row thrust bearing 4, the worm 1 cannot generate substantial displacement towards both sides, and the clearance is reserved to avoid the direct contact between both sides of the self-aligning bearing 3 and the adjacent components, so that the sliding trend of the self-aligning bearing 3 is limited.
In order to further promote the convenience of installation, axle bed 2 both ends all are provided with end cover 21, end cover 21 center is the shaft hole, the shaft hole is clearance fit with worm axle 11, and end cover 21 is adjustable with self-aligning bearing 3's both sides terminal surface clearance, this kind of mode can be according to actual conditions adjustment end cover with the direct clearance of bearing, thereby can eliminate because the installation, the error that produces in the manufacturing process, the clearance of condition adjustment end cover 21 and self-aligning bearing after the installation, specific end cover 21 accessible is fixed with axle bed 2 both ends a plurality of screw rods 22, adjust the clearance at end cover and axle bed 2 both ends through screw rod 22.
Because the worm 1 needs to release the axial degree of freedom, one end of the worm 1 is provided with a driven driving part which is connected with a driving part of a power device, and the driven driving part and the driving part have the degree of freedom of sliding along the axial direction of the worm 1, for example, the worm 1 is in transmission with the power device through a bevel gear pair 5, two bevel gears of the bevel gear pair 5 are in clearance fit, the fit clearance is 60-100 threads, and the transmission effect is not substantially influenced.
The invention also provides a large bag lifting machine, and the improvement is that the large bag lifting machine comprises the transmission assembly structure of the gear worm 1.
With the development of social economy, the current of an electrolytic cell is increased from the original 230KA to 500-600KA, the vacuum ladle capacity is increased from the original maximum aluminum absorption amount of 7.5 tons to the aluminum absorption amount of 16 tons at present, but the tilting gear worm 1 transmission device still adopts the traditional mechanical assembly mode, the operation is very difficult in the manual ladle tilting and aluminum pouring process, and more than 2 persons are often needed to complete the driving (the tilting of the gear-driven ladle lifter, and the worm 1 and a hand wheel are in transmission through a bevel gear pair).
The transmission assembly structure of the gear worm 1 is firstly applied to a large bag lifting machine by our company, the company is continuously researched and developed for nearly 1 year, a new transmission scheme is put into use by a new product at present, the effect is good, and one person can easily complete the operation, so that the transmission assembly structure of the gear worm 1 is unanimously praised by users.
The gear worm 1 transmission assembly structure can be applied to most of equipment with gear worm 1 transmission, and a large bag lifting machine is only one of the equipment, because as long as the gear worm 1 is used for transmission, the worm 1 can generate axial force and radial force, and the problems of overlarge corresponding friction force, too fast abrasion of the self-aligning bearing 3 and the like can be generated under the traditional assembly structure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (9)

1. The utility model provides a gear worm transmission assembly structure, includes gear, worm and gear drive's slewing mechanism, its characterized in that: the worm is supported by at least two self-aligning bearings, and a double-row thrust bearing is further mounted on the worm; the inner ring of the self-aligning bearing is fixed with a worm shaft of the worm, the outer ring and the worm shaft both have freedom degrees sliding along the axial direction, and the double-row thrust bearing is fixedly installed.
2. The gear worm drive assembly structure of claim 1, wherein: the two self-aligning bearings are symmetrically arranged at two ends of the worm, and the thrust bearing is positioned at the outer side of one of the self-aligning bearings.
3. The gear worm drive assembly structure of claim 1, wherein: the self-aligning bearing and the worm shaft are in clearance fit with the shaft seat to slide along the axial direction, and sliding clearances are reserved on two sides of the self-aligning bearing.
4. The gear worm drive assembly structure of claim 3, characterized in that: the fit clearance of the self-aligning bearing and the worm shaft and the shaft seat is 2-4 threads, and the sliding clearance reserved between the two sides of the self-aligning bearing and adjacent parts is 60-100 threads.
5. The gear worm drive assembly structure of claim 3, characterized in that: the two ends of the shaft seat are respectively provided with an end cover, the center of each end cover is a shaft hole, the shaft holes are in clearance fit with the worm shaft, and the end surface clearance between the end covers and the two sides of the self-aligning bearing can be adjusted.
6. The gear worm drive assembly structure of claim 1, wherein: the end covers are fixed with the two ends of the shaft seat through a plurality of screw rods, and the gaps between the end covers and the two ends of the shaft seat are adjusted through the screw rods.
7. The gear worm drive assembly structure of claim 1, wherein: one end of the worm is provided with a driven driving part which is connected with an active driving part of the power device, and the driven driving part and the active driving part have the freedom degree of sliding along the axial direction of the worm.
8. The gear worm drive assembly structure of claim 1, wherein: the worm is in transmission with the power device through the bevel gear pair, and the two bevel gears of the bevel gear pair are in clearance fit.
9. The utility model provides a large-scale chartered plane of lifting which characterized in that: comprising the geared worm drive assembly according to any one of claims 1 to 8.
CN202210575636.3A 2022-05-24 2022-05-24 Gear worm transmission assembly structure and large ladle machine comprising same Pending CN115523260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210575636.3A CN115523260A (en) 2022-05-24 2022-05-24 Gear worm transmission assembly structure and large ladle machine comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210575636.3A CN115523260A (en) 2022-05-24 2022-05-24 Gear worm transmission assembly structure and large ladle machine comprising same

Publications (1)

Publication Number Publication Date
CN115523260A true CN115523260A (en) 2022-12-27

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ID=84696773

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210575636.3A Pending CN115523260A (en) 2022-05-24 2022-05-24 Gear worm transmission assembly structure and large ladle machine comprising same

Country Status (1)

Country Link
CN (1) CN115523260A (en)

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