Crane wheel set

Abstract

A crane wheel set comprises two symmetrically-arranged bearing seats, bearings are assembled on the two bearing seats, a horizontally-arranged supporting shaft is arranged between the two bearing seats, the two ends of the supporting shaft are rotationally assembled in the bearing seats through the bearings, eccentric bearings are selected as the bearings in the bearing seats, and the two ends of the supporting shaft are rotationally assembled in the bearing seats through the bearings. A wheel matched with the I-shaped steel rail is further arranged between the two bearing seats, the wheel is arranged on the supporting shaft in a sleeving mode, a ball bearing is arranged between the wheel and the supporting shaft, an inner ring of the ball bearing is fixed to the supporting shaft, an outer ring of the ball bearing is fixed to the inner ring of the wheel, and the wheel is located in the middle of the supporting shaft. The device is simple in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane technical field especially relates to a crane wheel set. BACKGROUND

[0002] Crane is a kind of special hoisting equipment, including portal crane, bridge crane and tower crane etc., and the portal crane and bridge crane all include cart travel mechanism and trolley travel mechanism, and the active wheel set is used in cart travel mechanism and trolley travel mechanism, and the active wheel set generally includes bearing seat, support shaft and wheel, the wheel is rotatably assembled on bearing seat through support shaft, and bearing seat is detachably fixed on crane body, and the wheel is rotated along I-beam track by driving motor, to realize moving crane body, but in prior art, due to uneven travel track, one wheel may be suspended, which may cause crane wheel to bite rail and derail seriously, and the travel motor is damaged, and in the design and use of crane, the wheel suspension in travel process should be avoided as far as possible, therefore, in prior art, the wheel suspension may occur when crane wheel is on uneven track, and unbalanced stress is caused, and then rail biting and derailment occur. SUMMARY

[0003] The utility model discloses a kind of crane wheel sets to solve the technical problem that active wheel set of existing crane is caused by uneven travel track and is prone to rail biting or derailment, provide a kind of crane wheel set, including two symmetrical bearing seats, several uniform fixed holes are set up in the circumferential direction on bearing seat, fixed bolt is equipped in fixed hole, and bearing seat is detachably fixed on crane body by fixed bolt. Bearing is assembled in the two bearing seats, and eccentric bearing is selected in bearing in bearing seat, and the setting of eccentric bearing can adjust the height of wheel according to travel track, avoid wheel suspension, and avoid rail biting between wheel and travel track, support shaft is horizontally arranged between the two bearing seats, and support shaft plays a supporting role, and the both ends of support shaft are rotatably assembled in bearing seat by bearing. Wheel matched with I-beam track is also provided between the two bearing seats, wheel is sleeved on support shaft, and ball bearing is arranged between wheel and support shaft, the inner ring of ball bearing is fixed on support shaft, the outer ring of ball bearing is fixed on the inner ring of wheel, and wheel is located in the middle position of support shaft, and spacer sleeve is arranged between wheel and the two bearing seats, spacer sleeve is sleeved on support shaft, and the setting of spacer sleeve can reduce the circumferential movement of wheel along support shaft.

[0004] Preferably, gasket is arranged on the side of bearing seat close to spacer sleeve of wheel, and gasket plays the role of sealing and dustproof.

[0005] Preferably, end cover playing the role of sealing is arranged on the end of bearing seat away from wheel.

[0006] Preferably, the oil nozzle is arranged on the bearing seat to add lubricating oil to the eccentric bearing in the bearing seat.

[0007] The above scheme has the following advantages:

[0008] The eccentric bearing can adjust the height of the wheel according to the walking track, avoid the wheel from biting the track, and avoid the wheel from derailing with the walking track, improve the safety of the wheel, reduce the wear of the wheel and the walking track, and improve the service life of the walking wheel. The ball bearing arranged between the wheel and the support shaft facilitates the rotation of the wheel during use, and the eccentric bearing in the bearing seat is used in cooperation, the wheel rotates along the ball bearing, and the eccentric bearing is mainly used to adjust the distance between the wheel and the track when the track is uneven, so that the eccentric bearing plays an auxiliary leveling role. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is a cross-sectional structure schematic view of the utility model;

[0010] Fig. 2 It is a left view structure schematic view of the utility model.

[0011] Reference signs: 1, bearing seat; 2, support shaft; 3, bearing; 4, wheel; 5, ball bearing; 6, spacer sleeve; 7, gasket; 11, fixing bolt; 12, end cover; 13, oil nozzle. DETAILED DESCRIPTION

[0012] As Figs. 1-2As shown, a crane wheel set comprises two symmetrically arranged bearing seats 1, a plurality of uniformly arranged fixing holes are arranged on the bearing seat 1 in a circumferential direction, a fixing bolt 11 is arranged in the fixing hole, and the bearing seat 1 is detachably fixed on the crane body through the fixing bolt 11. The bearing seat 1 is arranged with a bearing 3, and the bearing 3 in the bearing seat 1 is an eccentric bearing. The arrangement of the eccentric bearing can adjust the height of the wheel 4 according to the running track, avoid the wheel 4 from being suspended, and avoid the wheel 4 from gnawing the track with the running track. A horizontally arranged supporting shaft 2 is arranged between the two bearing seats 1, the supporting shaft 2 plays a supporting role, and the two ends of the supporting shaft 2 are rotatably arranged in the bearing seat 1 through the bearing 3. A wheel 4 matched with the I-beam track is further arranged between the two bearing seats 1, the wheel 4 is sleeved on the supporting shaft 2, a ball bearing 5 is arranged between the wheel 4 and the supporting shaft 2, the inner ring of the ball bearing 5 is fixed on the supporting shaft 2, the outer ring of the ball bearing 5 is fixed on the inner ring of the wheel 4, the wheel 4 is located at the middle position of the supporting shaft 2, a spacer sleeve 6 is arranged between the wheel 4 and the two bearing seats 1, the spacer sleeve 6 is sleeved on the supporting shaft 2, and the arrangement of the spacer sleeve 6 can reduce the circumferential movement of the wheel 4 along the supporting shaft 2.

[0013] Preferably, the bearing seat 1 is provided with a gasket 7 on the side close to the spacer sleeve 6 of the wheel 4, and the gasket 7 plays a sealing and dustproof role.

[0014] Preferably, the end of the bearing seat 1 away from the wheel 4 is provided with an end cover 12 playing a sealing role.

[0015] Preferably, the two bearing seats 1 are each provided with an oil nozzle 13 for adding lubricating oil to the bearing 3 in the bearing seat 1.

[0016] Use process:

[0017] In use, the bearing seat 1 is detachably fixed on the lower end beam of the crane and the upper end beam of the crane through the fixing bolt 11, and the bottom end of the wheel 4 is rolled and matched on the I-beam track. When the top end of the I-beam track is horizontal to the ground, the wheel 4 rotates along the supporting shaft 2 under the action of the ball bearing 5. When the I-beam track is uneven, the height of the supporting shaft 2 is automatically adjusted by the eccentric bearings at the two ends of the supporting shaft 2 under the action of the gravity of the wheel 4, so that the wheel 4 is raised or lowered, and the wheel 4 is always matched with the top surface of the I-beam track, which can avoid gnawing between the wheel 4 and the I-beam track.

[0018] In the description of the utility model, it is understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0019] The above examples are illustrative of the present application and are not limiting. Other embodiments of this application will readily occur to those skilled in the art. The application is limited only by the claims.

Claims

1. A crane wheel assembly, comprising two symmetrically arranged bearing housings, each bearing housing being fitted with a bearing, and a horizontally arranged support shaft positioned between the two bearing housings, the two ends of the support shaft being rotatably mounted within the bearing housings via bearings, characterized in that: The eccentric bearing is selected for the bearing in the bearing seat, and a wheel matched with the I-shaped rail is further arranged between the two bearing seats, the wheel is sleeved on the supporting shaft, and the ball bearing is arranged between the wheel and the supporting shaft, the inner ring of the ball bearing is fixed on the supporting shaft, the outer ring of the ball bearing is fixed on the inner ring of the wheel, and the wheel is located at the middle position of the supporting shaft.

2. A wheelset for a crane vehicle as defined in claim 1, characterized in that: The spacer sleeves are arranged between the wheel and the two bearing seats and are sleeved on the supporting shaft.

3. A wheelset for a truck of a crane according to claim 2, characterized in that: The bearing seat is provided with the gasket on the side close to the spacer sleeve of the wheel.

4. A wheelset for a truck of a crane according to claim 1, characterized in that: The end cover for sealing is arranged at the end of the bearing seat away from the wheel.

5. A wheelset for a truck of a crane according to claim 1, characterized in that: The fixing holes are uniformly arranged on the bearing seat in the circumferential direction, and the fixing bolts are arranged in the fixing holes.

6. A wheelset for a truck of a crane according to claim 1, characterized in that: The oil nozzles for adding lubricating oil to the bearings in the bearing seats are arranged on the two bearing seats.

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