CN203428758U

CN203428758U - Wheel group of portal crane travelling mechanism

Info

Publication number: CN203428758U
Application number: CN201320421671.6U
Authority: CN
Inventors: 顾成敏; 仇步新; 李洪伟; 陈锁
Original assignee: ELEPHANT KING HEAVY INDUSTRIES Co Ltd
Current assignee: ELEPHANT KING HEAVY INDUSTRIES Co Ltd
Priority date: 2013-07-16
Filing date: 2013-07-16
Publication date: 2014-02-12
Anticipated expiration: 2023-07-16

Abstract

The utility model discloses a wheel group of a portal crane travelling mechanism. The wheel group of the portal crane travelling mechanism comprises a bogie frame and a driving wheel group, wherein a speed reducer is arranged between two driving wheels, and drives the driving wheel group to act; the driving wheel group comprises a central shaft and wheel bodies; bearings are arranged at two ends of the central shaft; bearing blocks connected with the bogie frame are arranged at the peripheries of the bearings; a seal end cover is arranged on the outer end face of each bearing block; shaft sleeves are arranged between the wheel bodies and the bearings; the inner side part of an annular dustproof plate is tightly pressed on the inner side surface of a bearing inner ring by each shaft sleeve; the outer side part of the annular dustproof plate is close to the inner side surface of a bearing outer ring. The wheel group of the portal crane travelling mechanism has the advantages that the axial size is greatly reduced; the structural form of the wheel group is optimized; the bogie group is compact and reasonable in structure, and convenient to maintain; the weight of the bogie group is reduced; the effective load is improved; the weight of the wheel group and the bogie frame is reduced. Thus, the targets of saving energy and reducing consumption of a large portal crane are achieved.

Description

Trestle crane running gear wheel group

Technical field

The utility model relates to a kind of hoisting crane parts, and especially a kind of large-scale trestle crane running gear wheel group, belongs to elevator machinery technical field.

Background technology

Large-sized gantry crane generally refers to that rated load weight (maximum can reach 2500t), span more than 100t are not less than 40m, transfer crane more than lifting range 40m, are generally used for the operations such as hull assembly of large-scale open depot, harbour, shipyard; Because the hoisting capacity of (large-scale) transfer crane is larger, traveling gear need be designed to organize a performance car form being connected with a plurality of equalizing bars more, on single track, chassis group reaches 32 groups (i.e. 64 wheels); Each running wheel diameter 400～800mm, wheel load 30～65t allowable that it carries; The traveling gear of existing structure is unreasonable because structure arranges, and has following defect:

1, wheel group bearing seal structure is too complicated; After the welding of bearing seat and bogie frame and bearing cap shim zoarium be machined to requirement, during assembling, two end axles bearing right alignment is better but processing request is high comparatively speaking;

At wheel axle head dress bearing part fixed type bearing inner rings such as baffle plate for place, the axial restraint effect of this structure is no problem, but therefore the structure of bearing seat can strengthen.

2, gear shaft is structure as a whole, blank forging is difficulty comparatively, fewer production cycle while of external coordination producer that can possess blank forging is long, and because blank is that small batch production does not possess die forging condition therefore institute's stock left for machining that stays is larger, the not high waste of the degree of utilization of material is more;

Gear shaft is when tooth Profile Machining, and the clamping of workpiece is because overall structure form clamping space on lathe is restricted, and can possess that the lathe of processing conditions is less and the manufacturing cycle is longer;

The overall structure form of gear shaft, once in use there is the phenomenons such as engaging tooth portion damage, must change whole (gear shaft) part, and this kind of form structure is not optimum structure from economic considerations.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of weight that can alleviate hoisting crane self structure to reach the trestle crane running gear wheel group of energy-saving and cost-reducing object.

In order to solve the problems of the technologies described above, trestle crane running gear wheel group of the present utility model, comprise bogie frame and the adhesion wheel group that is positioned at bogie frame below, between two driving wheels of adhesion wheel group, be provided with by motor-driven retarder, retarder is by being with cogged drive shaft adhesion wheel group to move, adhesion wheel group comprises center shaft and wheel body, the two ends of center shaft are provided with bearing, bearing periphery is provided with the bearing seat being connected with bogie frame, on the outer face of bearing seat, be provided with end cover, between wheel body and bearing, be provided with axle sleeve, the inner side part of an annular dustproof sheet is pressed on the inner surface of bearing inner ring by axle sleeve, on the inner surface of the Outboard Sections of the dustproof sheet of described annular near outside race.

The cross sectional shape of described dustproof sheet inner side part is linearity, and the cross sectional shape of dustproof sheet Outboard Sections is bathtub construction.

The both sides of described center shaft are respectively arranged with an annular groove, are mounted with the circlip for bearing location in annular groove.

Described axle drive shaft and gear arrange separately respectively, and gear is arranged on axle drive shaft by bore.

Between described gear and axle drive shaft, pass through spline joint.

The utility model has the advantage of:

Due to the annular dustproof sheet arranging and the circlip of setting, by improving a plurality of design of parts and the assembling form of traveling gear wheel group, reduced greatly its axial dimension, optimized the version of wheel group, make chassis group structure compacter, reasonable, safeguard conveniently, reduced the weight of chassis group and improved capacity weight, alleviate wheel group and bogie frame weight, thereby reached the energy-saving and cost-reducing object of large-sized gantry crane.

Accompanying drawing explanation

Fig. 1 is the main TV structure schematic diagram of the utility model trestle crane running gear wheel group;

Fig. 2 is that the A-A of Fig. 1 is to structural representation;

Fig. 3 is the B place structure for amplifying schematic diagram of Fig. 2;

Fig. 4 be axle drive shaft and gear treat package assembly schematic diagram.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, trestle crane running gear wheel group of the present utility model is described in further detail.

As shown in the figure, trestle crane running gear wheel group of the present utility model, comprise bogie frame 1 and the adhesion wheel group 4 that is positioned at bogie frame below, between two driving wheels of adhesion wheel group 4, be provided with by motor-driven retarder 3, retarder 3 drives 4 actions of adhesion wheel group by the axle drive shaft 2 with gear 12, adhesion wheel group 4 comprises center shaft 5 and wheel body 6, the two ends of center shaft 5 are provided with bearing 7, bearing 7 peripheries are provided with the bearing seat 8 being connected with bogie frame 1, on the outer face of bearing seat 8, be provided with end cover 13, between wheel body 6 and bearing 7, be provided with axle sleeve 9, the inner side part of an annular dustproof sheet 10 is pressed on the inner surface of bearing 7 inner rings by described axle sleeve 9, on the inner surface of the Outboard Sections of the dustproof sheet 10 of annular near bearing 7 outer rings, the cross sectional shape of dustproof sheet 10 inner side parts is linearity 14, the cross sectional shape of dustproof sheet 10 Outboard Sections is bathtub construction 15, the both sides of center shaft 5 are respectively arranged with an annular groove, in annular groove, be mounted with the circlip 11 for bearing location, circlip 11 can shorten the axial dimension of wheel group (one-sided) at least more than 30mm, the axial dimension of whole wheel group can shorten 60mm axle head above and that can not affect bearing inner ring to be fixed, dustproof sheet 10 takies axial dimension (thickness can be only 0.5mm) hardly, the material selection of dustproof sheet 10 is similar to nut stop washer material therefor, after drawing, there is certain elasticity, during design, guarantee reserved 0.5mm gap between outside race end face and cover of dust end face, thereby can not affect the rotation of wheel group.

Further axle drive shaft 2 and gear 12 can be arranged separately respectively, gear 12 is arranged on axle drive shaft 2 by bore, further between gear 12 and axle drive shaft 2, pass through spline joint, to the requirement of blank, can greatly reduce thus, only need order respectively and make gear, axis blank, although add the processing request that has increased castellated shaft and hole man-hour simultaneously, but the change due to gear configurations, greatly reduced the configuration requirement of tooth Profile Machining lathe, production cycle and product design have also obtained further assurance, compare piece of material manufacturing cost with original design form and reduce by 30%.

By the setting of the utility model said structure, many places design of part to traveling gear wheel group is optimized, can make the axial dimension of wheel group shorten 30% left and right, can shorten bogie frame width is corresponding thus, the improvement design of gear shaft can make this part single-piece manufacturing cost reduce by 30%, simultaneously by finding after the detailed comparative analysis of two kinds of car wheel group structures, the wheel group of the utility model scheme can reduce by 20% than the wheel group total weight using at present, comprehensive manufacturing cost can decline 25%, if promoted in a wider context, can bring better economic benefit, for large-sized gantry crane energy-saving and cost-reducing made some contributions.

Claims

1. a trestle crane running gear wheel group, comprise bogie frame (1) and be positioned at the adhesion wheel group (4) of bogie frame below, between two driving wheels of adhesion wheel group (4), be provided with by motor-driven retarder (3), retarder (3) drives adhesion wheel group (4) action by the axle drive shaft (2) with gear (12), adhesion wheel group (4) comprises center shaft (5) and wheel body (6), the two ends of center shaft (5) are provided with bearing (7), bearing (7) periphery is provided with the bearing seat (8) being connected with bogie frame (1), on the outer face of bearing seat (8), be provided with end cover (13), it is characterized in that: between described wheel body (6) and bearing (7), be provided with axle sleeve (9), the inner side part of an annular dustproof sheet (10) is pressed on the inner surface of bearing (7) inner ring by described axle sleeve (9), on the inner surface of the Outboard Sections of the dustproof sheet of described annular (10) near bearing (7) outer ring.

2. according to trestle crane running gear wheel group claimed in claim 1, it is characterized in that: the cross sectional shape of described dustproof sheet (10) inner side part is linearity (14), and the cross sectional shape of dustproof sheet (10) Outboard Sections is bathtub construction (15).

3. according to trestle crane running gear wheel group claimed in claim 1, it is characterized in that: the both sides of described center shaft (5) are respectively arranged with an annular groove, in annular groove, be mounted with the circlip (11) for bearing location.

4. according to trestle crane running gear wheel group claimed in claim 1, it is characterized in that: described axle drive shaft (2) arranges separately respectively with gear (12), and gear (12) is arranged on axle drive shaft (2) by bore.

5. according to trestle crane running gear wheel group claimed in claim 4, it is characterized in that: between described gear (12) and axle drive shaft (2), pass through spline joint.