CN223422229U - A walking wheel structure of a gantry crane trolley - Google Patents

Abstract

The utility model discloses a wheel structure for a gantry crane trolley, which belongs to the technical field of gantry cranes and solves the problem of low service life of the existing gantry crane trolley wheels. It includes an automatic wheel and a passive wheel. The automatic wheel and the passive wheel both include a wheel body, a rotating ring and a limiting ring. The wheel body is rotatably mounted on the support shaft inside the gantry crane through a first bearing. A mounting surface with a diameter smaller than the wheel body diameter is provided on the side of the wheel body close to the gantry crane. The rotating ring is sleeved on the mounting surface. The limiting ring is sleeved on the mounting surface on one side of the rotating ring, and the limiting ring is fixedly connected to the mounting surface. A plurality of balls are movably embedded on a side of the limiting ring close to the rotating ring, and each of the balls is in contact with the side of the rotating ring. The gantry crane trolley wheel structure of the utility model can reduce the friction between the wheel and the trolley track, reduce noise and running resistance, and extend service life.

Description

Travelling wheel structure of gantry crane travelling trolley

Technical Field

The utility model relates to the technical field of gantry cranes, in particular to a travelling wheel structure of a gantry crane travelling trolley.

Background

The rail of the gantry crane is specified as GB/T3811-2016 (general rule for crane design), GB/T14406-2017 (nut crane) and related content specified by GB/T3811-2016 (crane) standard in China, 1, the rail installation position is determined, and the rail is positioned and fixed transversely and longitudinally according to standard requirements. 2. The horizontal distance, the installation height and the like among the rails are ensured to meet the standard requirements. 3. The straightness, flatness and transverse inclination of the track are strictly controlled, and the track is adjusted and checked according to standard requirements. 4. For various processes in the track installation process, the operation is required to be performed according to standard requirements so as to ensure that the process quality meets the standard requirements. The track gauge deviation is not more than +/-5 mm, the bending straightness of the track is not more than 2mm, and the relative difference of elevation of two parallel tracks is not more than 10mm. .

The conventional traveling wheel structure of the gantry crane traveling trolley generally comprises an automatic traveling wheel 1 and a passive traveling wheel 2 as shown in fig. 1, wherein the automatic traveling wheel 1 and the passive traveling wheel 2 are rotatably arranged on a gantry crane 3, the automatic traveling wheel 1 is of a wheel body structure with gears, and is driven by a motor to travel, and the passive traveling wheel 2 plays a role in supporting and traveling. In the practical application process, as the main beam structure of the gantry crane 3 is severely scratched, the trolley rails 4 on the two main beams are deformed, the straightness, elevation, track gauge errors are large and the like, and the gantry crane is operated for a long time for various parts for fatigue and aging and other reasons, the automatic travelling wheel 1 and the passive travelling wheel 2 travel on the trolley rails 4 and track side gnawing friction is serious, travelling noise is large, travelling resistance is large, travelling wheels are off track when heavy objects are most severely hoisted, or a lifting hook has a bit of inclined-pull travelling wheels to off track immediately, the travelling wheels are off track frequently, the cooperation repair of other cranes, cranes and clamp workers (the trolley crane is used for correcting the track position) is required, and the normal use of the gantry crane is greatly affected.

Therefore, development and design of a novel traveling wheel structure of a gantry crane traveling trolley are needed to solve the above problems.

Disclosure of utility model

The utility model aims to solve the technical problems in the prior art, and aims to provide a traveling wheel structure of a gantry crane traveling trolley, which can reduce friction force between the traveling wheel and a trolley track, reduce noise and traveling resistance and prolong service life.

In order to achieve the above purpose, the utility model provides a traveling wheel structure of a gantry crane traveling trolley, which comprises an automatic traveling wheel and a passive traveling wheel, wherein the automatic traveling wheel and the passive traveling wheel respectively comprise a wheel body, a rotating ring and a limiting ring, the wheel body is rotatably arranged on a supporting shaft on the inner side of the gantry crane through a first bearing, one side, close to the gantry crane, of the wheel body is provided with a mounting surface with the diameter smaller than that of the wheel body, the rotating ring is sleeved on the mounting surface, a second bearing is arranged between the rotating ring and the mounting surface, the rotating ring is contacted with the side surface of a trolley rail, the limiting ring is sleeved on the mounting surface on one side of the rotating ring, the limiting ring is fixedly connected with the mounting surface, a plurality of balls are movably embedded on one side, close to the rotating ring, of the limiting ring are uniformly distributed along the circumferential direction of the rotating ring, each ball is contacted with the side surface of the rotating ring, the outer wall surface of the limiting ring corresponding to the automatic traveling wheel is fixedly provided with a gear ring, and the other side, corresponding to the diameter of the passive traveling wheel, is provided with a rim larger than the wheel body.

As a further development, the radial position of the balls corresponds to the contact surface position of the rotating ring and the trolley track.

Further, the limiting ring is connected with the wheel body through bolt fastening, and the gear ring is connected with the limiting ring through bolt fastening.

Further, the rotating ring is in clearance fit with the limiting ring, and the clearance between the rotating ring and the limiting ring is 4-8mm.

Further, a brush is arranged on one surface of the limiting ring, which is close to the rotating ring, and the brush is contacted with the side surface of the rotating ring.

Further, the hairbrush is adhered to the side face of the limiting ring through glue.

Advantageous effects

Compared with the prior art, the utility model has the advantages that:

According to the travelling wheel structure of the gantry crane travelling trolley, the automatic travelling wheel and the passive travelling wheel are contacted with the side surface of the trolley track by adopting the rotating ring which slides relatively, in the travelling process, the surface contact friction between the travelling wheel and the side surface of the trolley track is converted into the point type rolling friction of the balls, so that the friction force between the travelling wheel and the trolley track can be reduced, the noise and the travelling resistance are reduced, and the service life is prolonged.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 2;

FIG. 4 is an enlarged schematic view of the structure of the wheel body according to the present utility model.

Wherein, 1-automatic travelling wheel, 2-driven travelling wheel, 3-portal crane, 4-trolley track, 5-wheel body, 6-rotating ring, 7-limiting ring, 8-supporting shaft, 9-installation surface, 10-second bearing, 11-ball, 12-gear ring, 13-rim and 14-brush.

Detailed Description

The utility model will be further described with reference to specific embodiments in the drawings.

Referring to fig. 2-4, the travelling wheel structure of the gantry crane travelling trolley comprises an automatic travelling wheel 1 and a driven travelling wheel 2, wherein the automatic travelling wheel 1 and the driven travelling wheel 2 respectively comprise a wheel body 5, a rotating ring 6 and a limiting ring 7, the wheel body 5 is rotatably arranged on a supporting shaft 8 on the inner side of the gantry crane 3 through a first bearing, one side of the wheel body 5, which is close to the gantry crane 3, is provided with a mounting surface 9 with the diameter smaller than that of the wheel body 5, the rotating ring 6 is sleeved on the mounting surface 9, a second bearing 10 is arranged between the rotating ring 6 and the mounting surface 9, so that the rotating ring 6 can rotate relative to the wheel body 5, the rotating ring 6 is contacted with the side surface of a trolley track 4 to play a limiting role, the limiting ring 7 is sleeved on the mounting surface 9 on one side of the rotating ring 6, the limiting ring 7 is fixedly connected with the mounting surface 9, a plurality of balls 11 are movably embedded on one side surface, the plurality of balls 11 are uniformly distributed along the circumferential direction of the rotating ring 6, each ball 11 is contacted with the side surface of the rotating ring 6, the rotating ring 6 is further supported by the side surface of the rotating ring 6, the rotating ring 6 is sleeved on the second bearing 10, the rolling ring is further arranged on the side of the ring 6, the rolling ring is further has a corresponding to prevent the rolling ring from falling off, and the rolling ring is further, the rolling ring is prevented from being correspondingly deformed, and the rolling wheels 1 are correspondingly arranged on the outer side of the ring 1 is provided with a wheel 1, and has a diameter-wheel 11, and is further bearing is provided with a diameter-3, and is further bearing ring 11, and is used to prevent the problem is has and is to be convenient.

According to the travelling wheel structure of the gantry crane travelling trolley, the automatic travelling wheel 1 and the passive travelling wheel 2 are in contact with the side face of the trolley track 4 by adopting the rotating ring 6 which slides relatively, in the travelling process, the surface contact friction between the travelling wheel and the side face of the trolley track is converted into the point type rolling friction of ball contact, so that the friction force between the travelling wheel and the trolley track can be reduced, the noise and the travelling resistance are reduced, and the service life is prolonged.

Preferably, the radial position of the balls 11 corresponds to the contact surface position of the rotating ring 6 and the trolley track 4, so that the stress point of the rotating ring 6 corresponds to the position of the balls 11, and the supporting effect of the rotating ring 6 is further improved.

Preferably, the limiting ring 7 is connected with the wheel body 5 through bolt fastening, the gear ring 12 is connected with the limiting ring 7 through bolt fastening, specifically, one side of the limiting ring 7 is provided with a connecting plate, the connecting plate is connected with the wheel body 5 through a plurality of bolt fastening arranged axially, and likewise, one side of the gear ring 12 is provided with a connecting plate, and the connecting plate is connected with the limiting ring 7 through a plurality of bolt fastening arranged axially.

Preferably, clearance fit is between the rotating ring 6 and the limiting ring 7, so that the rotating ring 6 can rotate, the balls 11 can support the rotating ring 6, lubricating oil is conveniently added to the positions of the balls 11 and the second bearings 10, and the clearance between the rotating ring 6 and the limiting ring 7 is 4-8mm, so that the brush 14 is convenient to install.

Preferably, a brush 14 is arranged on one surface of the limiting ring 7, which is close to the rotating ring 6, and the brush 14 contacts with the side surface of the rotating ring 6, so that the rotating ring 6 can rotate, and a gap between the rotating ring 6 and the limiting ring 7 can be shielded, so that impurities are prevented from entering, and a nozzle tip can penetrate through the brush 14 when lubricating oil is added. Further, the hairbrush 14 is adhered to the side face of the limiting ring 7 through glue, specifically, the hairbrush 14 is installed on a mounting ring, and the mounting ring is adhered to the limiting ring 7 through glue, so that the hairbrush 14 is convenient to install, assemble and disassemble, and maintain.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims (6)

1. The utility model provides a portal crane walking dolly traveling wheel structure, includes automatic traveling wheel (1) and driven traveling wheel (2), its characterized in that, automatic traveling wheel (1), driven traveling wheel (2) all include wheel body (5), rotation ring (6) and spacing ring (7), wheel body (5) rotate through first bearing and install on portal crane (3) inboard back shaft (8), one side that wheel body (5) is close to portal crane (3) is equipped with mounting surface (9) that the diameter is less than wheel body (5) diameter, rotation ring (6) cover establish on mounting surface (9), rotation ring (6) and mounting surface (9) between be equipped with second bearing (10), rotation ring (6) and the side of dolly track (4) contact, spacing ring (7) cover establish on mounting surface (9) of one side rotation ring (6), and spacing ring (7) are fixedly connected between rotation ring (7) be close to one side of portal crane (3) be equipped with the ball (11) of a plurality of balls (11) that are evenly distributed along the rotation ring (6) each side of rotation ring (6), the automatic travelling wheel is characterized in that a gear ring (12) is fixedly arranged on the outer wall surface of a limiting ring (7) corresponding to the automatic travelling wheel (1), and a rim (13) with the diameter larger than that of the wheel body (5) is arranged on the other side of the wheel body (5) corresponding to the driven travelling wheel (2).

2. A gantry crane travelling bogie travelling wheel arrangement according to claim 1, characterized in that the radial position of the balls (11) corresponds to the position of the contact surface of the rotating ring (6) and the bogie track (4).

3. The traveling wheel structure of the traveling trolley of the gantry crane according to claim 1, wherein the limiting ring (7) is connected with the wheel body (5) through bolt fastening, and the gear ring (12) is connected with the limiting ring (7) through bolt fastening.

4. A travelling wheel structure of a travelling trolley for a gantry crane according to any one of claims 1-3, characterized in that the rotating ring (6) and the limiting ring (7) are in clearance fit, and the clearance between the rotating ring (6) and the limiting ring (7) is 4-8mm.

5. The traveling wheel structure of the gantry crane traveling trolley according to claim 4, wherein a brush (14) is arranged on one surface of the limiting ring (7) close to the rotating ring (6), and the brush (14) is contacted with the side surface of the rotating ring (6).

6. The travelling wheel structure of the travelling trolley of the gantry crane according to claim 5, wherein the hairbrush (14) is adhered to the side surface of the limiting ring (7) through glue.