Self-aligning bearing for adjusting trolley and end beam of crane
By adjusting the crane trolley and end beams with a center bearing, and using inner and outer balls and eccentric support ring structure, the problem of the crane hanging wheel when the track is uneven is solved, the stable contact between the walking wheel and the track is achieved, avoiding the phenomenon of gnawing the rails, and protecting the walking motor.
Patent Information
- Application Number
- CN202422983421.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-30
- Filing Date
- 2024-12-04
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-12-04
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, and a centralized bearing is adopted to support the inner ring, the outer ring and the eccentric support ring structure. The inner and outer balls are combined, and the eccentric support ring can be automatically adjusted to ensure that the walking wheel always contacts the track.
It effectively avoids the walking wheel hanging in the air when the track is uneven, maintains stable contact between the walking wheel and the track, prevents the phenomenon of gnawing the track, and protects the walking motor.
Smart Images
Figure CN223257310U_ABST
Abstract
Description
Technical Field
[0001] The utility model 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 is a multi-action lifting machine that can lift and carry heavy objects vertically and 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 are becoming more and more extensive in the market. Cranes generally include a main beam, end beams, 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 trolley traveling mechanism is assembled on the trolley. The trolley traveling mechanism and the trolley traveling mechanism are connected. 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 unevenness of the travel track, there will be a phenomenon of a wheel hanging in the air. In severe cases, it will cause the crane travel wheel to 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 from being suspended in the air during 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. Utility Model Content
[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 utility model 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 the shape of a circular ring, and also including a supporting outer ring arranged on the outside of the supporting inner ring, an eccentric supporting ring is provided between the supporting outer ring and the supporting inner ring, an inner ball is provided between the inner side of the eccentric supporting ring and the outer side of the inner supporting ring, and an outer ball is provided 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 the shape of a circular ring, and the outer side of the eccentric support ring is in the shape of an eccentric circular arc.
[0005] Preferably, the ball diameter of the outer ball is larger than the ball diameter of the inner ball.
[0006] Preferably, a keyway is provided on the inner side of the inner support ring for facilitating connection with the support shaft (not shown in the drawings of the specification).
[0007] The above solution has the following advantages:
[0008] 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 in the air when the track is uneven. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural diagram of the utility model;
[0010] Figure 2 This is a schematic diagram of the use state of the utility model.
[0011] 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
[0012] like Figure 1-2 As shown, a self-aligning bearing for adjusting a crane trolley and an end beam comprises a bearing body 1, the bearing body 1 comprises an annular support inner ring 2, and also comprises a support outer ring 3 arranged on the outside of the support inner ring 2, an eccentric support ring 4 is provided between the support outer ring 3 and the support inner ring 2, an inner ball 5 is provided between the inner side of the eccentric support ring 4 and the outer side of the inner support ring 2, and an outer ball 6 is provided between the outer side of the eccentric support ring 4 and the inner side of the outer support ring 3. During use, when the track is uneven, such as when the horizontal plane of the track is lowered, the protrusion of the eccentric support ring 4 rotates downward, and at this time the lowest point of the running wheel moves down and contacts the track. Similarly, when the horizontal plane of the track rises, the protrusion of the eccentric support ring 4 rotates upward, and the running wheel moves up.
[0013] 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.
[0014] Preferably, the ball diameter of the outer ball 6 is larger than the ball diameter of the inner ball 5 .
[0015] Preferably, a keyway is provided on the inner side of the inner support ring 2 for facilitating connection with the support shaft.
[0016] Usage process:
[0017] When the utility model 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 walking 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 walking wheel moves up, avoiding the walking wheel from being suspended in the air when the track is uneven.
[0018] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicating orientations or positional relationships, are 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.
[0019] 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 falls within the scope of protection 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 including an annular support inner ring, characterized in that: It also includes a supporting outer ring arranged on the outside of the supporting inner ring, an eccentric supporting ring is provided between the supporting outer ring and the supporting inner ring, an inner ball is provided between the inner side of the eccentric supporting ring and the outer side of the inner supporting ring, and an outer ball is provided between the outer side of the eccentric supporting ring and the inner side of the outer supporting ring.
2. The self-aligning bearing for adjusting the crane trolley and end beam according to claim 1, characterized in that: 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 circular arc shape.
3. The self-aligning bearing for adjusting the crane trolley and end beam according to claim 1, characterized in that: The outer ball has a larger ball diameter than 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.