Self-aligning bearing for adjusting trolley and end beam of crane
By designing the center bearing, the position of the walking wheel is adjusted by using the coordination of the eccentric support ring and the ball, the problem of the walking wheel hanging when the rail is uneven is solved, and the effect of the walking wheel always contacting the track is achieved, avoiding track gnawing and motor damage.
Patent Information
- Application Number
- CN202411770787.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-30
- Filing Date
- 2024-12-04
- Publication Date
- 2025-02-25
AI Technical Summary
When the tracks of existing cranes are uneven, the walking wheels are prone to suspend in the air, resulting in unbalanced stress, which may cause rail gnawing and damage the walking motor.
A centralized bearing for adjusting crane trolley and end beam is designed, including a circular ring-shaped support inner ring, a support outer ring arranged on the outside and an eccentric support ring. Through the coordination of the inner ball and the outer ball, the eccentric support ring rotates when the track is uneven, adjusting the position of the walking wheel to avoid hanging.
It effectively avoids the hanging phenomenon of the walking wheel when the track is uneven, ensures that the walking wheel always contacts the track, and avoids the risk of overload and damage to the track and motor.
Smart Images
Figure CN119508350A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of cranes, and in particular relates to a self-aligning bearing for adjusting a crane trolley and an end beam. Background Art
[0002] A crane refers to a multi-action lifting machinery that can lift heavy objects vertically and carry them horizontally within a certain range; it is also called an overhead crane, an overhead crane, or a hoist. Some lifting equipment has the working characteristic of intermittent motion, that is, the corresponding mechanisms for taking materials, moving, unloading, etc. work alternately in one working cycle. The development and use of cranes in the market are becoming more and more extensive. Cranes generally include a main beam, an end beam, outriggers, a trolley traveling mechanism, a car traveling mechanism, and a lifting mechanism. The trolley traveling mechanism of a bridge crane is installed at both ends of the end beam 7, and the car traveling mechanism is assembled on the trolley. The trolley traveling mechanism and the car traveling mechanism They all include a driving wheel 71, a driven wheel 72 and a travel motor 73. The travel motor 73 drives the driving wheel 71 to rotate, and the driven wheel 72 follows the end beam 7 or the lifting trolley to rotate freely along the track. However, in the prior art, due to the uneven travel track, a wheel may be suspended in the air. In severe cases, the crane travel wheel may gnaw the track, causing the travel motor to be overloaded and damaged. During the design and use of the crane, it should be avoided as much as possible to avoid the travel wheel being suspended in the travel process. Therefore, in the prior art, when the crane travel wheel is on an uneven track, it is easy for the wheel to be suspended in the air, resulting in unbalanced force and then gnawing the track. Summary of the invention
[0003] In order to solve the technical problem that the traveling wheels are easily suspended due to the uneven track during the use of the existing crane, the present invention provides a self-aligning bearing for adjusting the crane trolley and the end beam, including a bearing body, the bearing body including a supporting inner ring in a circular ring shape, and also including a supporting outer ring arranged on the outside of the supporting inner ring, an eccentric supporting ring is arranged between the supporting outer ring and the supporting inner ring, an inner ball is arranged between the inner side of the eccentric supporting ring and the outer side of the inner supporting ring, and an outer ball is arranged between the outer side of the eccentric supporting ring and the inner side of the outer supporting ring. During use, when the track is uneven, such as when the horizontal plane of the track is lowered, the protrusion of the eccentric supporting ring rotates downward, and at this time the lowest point of the traveling wheel moves down and contacts the track. Similarly, when the horizontal plane of the track is raised, the protrusion of the eccentric supporting ring rotates upward, and the traveling wheel moves up.
[0004] Preferably, the inner side of the eccentric support ring is in a circular ring shape, and the outer side of the eccentric support ring is in an eccentric arc shape.
[0005] Preferably, the ball diameter of the outer ball is larger than the ball diameter of the inner ball.
[0006] Preferably, a keyway (not shown in the drawings of the specification) is provided on the inner side of the inner support ring for facilitating connection with the support shaft.
[0007] The above solution has the following advantages: The outer support ring, inner support ring and eccentric support ring are set up. When in use, when the track is uneven, such as when the track level is lowered, the protrusion of the eccentric support ring rotates downward around the inner support ring. At this time, the lowest point of the walking wheel moves down and contacts the track. Similarly, when the track level rises, the protrusion of the eccentric support ring rotates upward around the inner support ring, and the walking wheel moves up, avoiding the walking wheel from being suspended when the track is uneven. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the use state of the present invention.
[0009] Figure numerals: 1, bearing body; 2, inner support ring; 3, outer support ring; 4, eccentric support ring; 5, inner ball; 6, outer ball; 7, end beam; 71, driving wheel; 72, driven wheel; 73, travel motor. DETAILED DESCRIPTION
[0010] like Figure 1-2 As shown, a self-aligning bearing for adjusting a crane trolley and an end beam comprises a bearing body 1, wherein the bearing body 1 comprises an annular supporting inner ring 2, and also comprises an outer supporting ring 3 arranged on the outside of the supporting inner ring 2, an eccentric supporting ring 4 is arranged between the supporting outer ring 3 and the supporting inner ring 2, an inner ball 5 is arranged between the inner side of the eccentric supporting ring 4 and the outer side of the inner supporting ring 2, and an outer ball 6 is arranged between the outer side of the eccentric supporting ring 4 and the inner side of the outer supporting ring 3. When in use, when the track is uneven, such as when the track level is lowered, the protrusion of the eccentric supporting ring 4 rotates downward, and at this time the lowest point of the running wheel moves downward and contacts the track, and similarly, when the track level is raised, the protrusion of the eccentric supporting ring 4 rotates upward, and the running wheel moves upward.
[0011] Preferably, the inner side of the eccentric support ring 4 is in a circular ring shape, and the outer side of the eccentric support ring 4 is in an eccentric arc shape.
[0012] Preferably, the ball diameter of the outer ball 6 is larger than the ball diameter of the inner ball 5 .
[0013] Preferably, a keyway is provided on the inner side of the inner support ring 2 for connecting the support shaft.
[0014] Usage process: When the present invention is in use, when the track is uneven, such as when the track level is lowered, the protrusion of the eccentric support ring 4 rotates downward around the inner support ring 2, and the lowest point of the running wheel moves down and contacts the track. Similarly, when the track level is raised, the protrusion of the eccentric support ring 4 rotates upward around the inner support ring 2, and the running wheel moves up, avoiding the running wheel from being suspended when the track is uneven.
[0015] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "top", "bottom", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0016] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.
Claims
1. A self-aligning bearing for adjusting a crane trolley and an end beam, comprising a bearing body, the bearing body comprising a supporting inner ring in a circular ring shape, characterized in that: It also includes a supporting outer ring arranged on the outside of the supporting inner ring, an eccentric supporting ring is arranged between the supporting outer ring and the supporting inner ring, an inner ball is arranged between the inner side of the eccentric supporting ring and the outer side of the inner supporting ring, and an outer ball is arranged between the outer side of the eccentric supporting ring and the inner side of the outer supporting ring; the outer side of the eccentric supporting ring is an eccentric arc shape.
2. A self-aligning bearing for adjusting a crane trolley and an end beam according to claim 1, characterized in that: The inner side of the eccentric support ring is in a circular ring shape.
3. The self-aligning bearing for adjusting the crane trolley and end beam according to claim 1, characterized in that: The ball diameter of the outer ball is larger than the ball diameter of the inner ball.
4. The self-aligning bearing for adjusting the crane trolley and end beam according to claim 1, characterized in that: The inner side of the inner support ring is provided with a keyway for connecting the support shaft.