Transmission mechanism of crane travelling mechanism
By introducing worm gear transmission and multiple sets of roller gear design into the bridge crane, the problems of tilting and derailment of the bridge crane have been solved, synchronous movement and stable transmission have been achieved, and safety and accuracy have been improved.
Patent Information
- Application Number
- CN202423197803.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Overhead cranes may tilt, derail, or even fall due to wiring problems during long-term operation, posing a safety hazard to the existing transmission mechanism.
The drive assembly includes a motor, drive shaft, worm gear, and drive gear. Through the meshing transmission of the worm gear and worm, the drive gear and drive wheel rotate synchronously, ensuring that the two sides of the crossbeam move synchronously. Combined with the design of multiple sets of rollers and gears, stability and synchronization are improved.
This effectively avoids the tilting of the crossbeam during movement, improves safety performance and transmission accuracy, reduces production costs, and enhances the stability of the crossbeam's start and stop and the synchronization of its movement.
Smart Images

Figure CN223480629U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crane technology, specifically a transmission mechanism for a crane traveling mechanism. Background Technology
[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their two ends are supported by tall concrete pillars or metal supports, resembling a bridge, the bridge frame of a bridge crane runs longitudinally along tracks laid on elevated structures on both sides. This allows for full utilization of the space beneath the bridge frame for material handling, without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.
[0003] The transmission mechanism of a bridge crane is usually driven by multiple motors. When working for a long time, the bridge crane may tilt due to improper operation caused by wiring problems, which may lead to derailment or even the crane falling. To address this, we propose a new transmission mechanism for the crane's traveling mechanism. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a transmission mechanism for a crane traveling mechanism, which effectively solves the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a crane traveling mechanism transmission mechanism, including a crossbeam, a drive assembly, a movable seat, and a drive wheel, wherein the drive assembly is installed inside the crossbeam, the movable seat is located on both sides of the crossbeam, and the drive wheel is installed inside the movable seat;
[0006] The drive assembly includes a motor, drive shafts, turbines, worm gears, and drive teeth. Both sets of drive shafts are installed inside the crossbeam. The turbines are installed on the upper part of the drive shafts. The motor is installed on the rear side of the crossbeam. The drive shaft of the motor passes through the crossbeam and is connected to the worm gear. The worm gear meshes with the two sets of turbines. The drive teeth are located on both sides of the drive shafts.
[0007] Preferably, each of the movable seats is provided with a mounting plate inside, and the mounting plate is provided with a bearing seat inside, and the drive wheel is installed inside the bearing seat.
[0008] Preferably, the drive wheel includes a drive rod, the upper part of the drive rod is provided with a roller, and a gear is provided on one side of the drive rod, with two sets of gears meshing with the drive teeth.
[0009] Preferably, the bottom of the crossbeam is provided with a slide rail, and the front and rear sides of the slide rail are provided with track grooves, which are arc-shaped.
[0010] Preferably, the turbine has a rotating rod inside, the rear side of which is connected to the drive shaft of the motor, and the crossbeam has a rotating seat inside, with the front end of the rotating rod located inside the rotating seat.
[0011] Preferably, each of the crossbeams is provided with a support plate inside, and the support plate is provided with a bearing inside, with the drive shaft located inside the bearing.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. When the drive assembly is working, it is driven by a motor, which in turn drives a worm gear. The worm gear drives two sets of turbines, which in turn drive two sets of drive shafts. The drive shafts drive drive teeth, which in turn drive the drive wheels. This allows the device to synchronously drive four sets of drive teeth during operation, ensuring that the drive wheels on both sides of the crossbeam move synchronously. Compared with other transmission methods, this method can effectively save production costs, ensure the synchronicity of the left and right sides of the crossbeam during movement, prevent the crossbeam from tilting, improve the safety performance of the device, and maintain the accuracy of transmission through the turbine and worm gear transmission, allowing the crossbeam to start and stop more effectively.
[0014] 2. When the drive gear rotates, it will drive two sets of gears. The rotation of the two sets of gears will drive the drive rod to rotate, which in turn will drive the rollers to rotate. Thus, when one set of gears rotates, it will drive two sets of rollers to rotate simultaneously. When the two sets of gears on one side of the crossbeam rotate, they will drive four sets of rollers to rotate. By setting multiple sets of rollers, the moving seat can be better supported, so that the moving seat can better support the crossbeam. In addition, setting multiple sets of gears can effectively improve the stability of the crossbeam during movement.
[0015] 3. By setting up a mounting plate, the position of the bearing housing can be defined, and by setting up a bearing housing, the position of the drive wheel can be better defined, so that the drive wheel can rotate and move more effectively. Attached Figure Description
[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.
[0017] In the attached diagram:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the movable base structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the drive component structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the drive wheel structure of this utility model.
[0022] In the diagram: 10, crossbeam; 20, drive assembly; 21, motor; 22, drive shaft; 23, turbine; 24, worm gear; 25, drive gear; 30, moving seat; 31, mounting plate; 32, bearing housing; 40, drive wheel; 41, drive rod; 42, roller; 43, gear. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0024] Example 1, by Figure 1-4 A crane traveling mechanism transmission mechanism is provided, including a crossbeam 10, a drive assembly 20, a movable seat 30 and a drive wheel 40. The drive assembly 20 is installed inside the crossbeam 10, the movable seat 30 is located on both sides of the crossbeam 10, and the drive wheel 40 is installed inside the movable seat 30.
[0025] The drive assembly 20 includes a motor 21, drive shafts 22, worm gears 23, a worm 24, and drive gears 25. Both drive shafts 22 are installed inside the crossbeam 10. The worm gears 23 are installed on the upper part of the drive shafts 22. The motor 21 is installed on the rear side of the crossbeam 10. The drive shaft of the motor 21 passes through the crossbeam 10 and is connected to the worm gear 24. The worm gear 24 meshes with the two worm gears 23. The drive gears 25 are located on both sides of the drive shafts 22. In use, the device operates by running the drive assembly 20. The drive assembly 20 moves the drive wheel 40 inside the movable seat 30, and the rotation of the drive wheel 40 moves the crossbeam 10. The movable seat 30 effectively controls the position of the drive wheel 40. The device is configured to perform limited operations. When the drive assembly 20 is in operation, it can be rotated by the motor 21. The rotation of the motor 21 drives the worm gear 24, which in turn drives two sets of turbines 23. These turbines in turn drive two sets of drive shafts 22, which in turn drive the drive gears 25. The drive gears 25 in turn drive the drive wheels 40, allowing the device to simultaneously drive all four sets of drive gears 25 to rotate synchronously. This ensures that the drive wheels 40 on both sides of the crossbeam 10 move synchronously. Compared to conventional transmission methods, this approach effectively saves on production costs and ensures the smooth movement of the crossbeam 10. During movement, the synchronicity of the left and right sides of the crossbeam 10 prevents tilting during movement, improving the safety performance of the device. Furthermore, the transmission via the worm gear 24 and worm 23 effectively maintains transmission precision, allowing the crossbeam 10 to start and stop more efficiently. Each movable base 30 has a mounting plate 31 inside, with a bearing seat 32 inside each mounting plate 31. The drive wheel 40 is mounted inside the bearing seat 32. The mounting plate 31 limits the position of the bearing seat 32, and the bearing seat 32 further limits the position of the drive wheel 40, allowing for better rotation and movement. The drive wheel 40 includes a drive mechanism. The upper part of the moving rod 41 and the drive rod 41 are equipped with rollers 42, and a gear 43 is provided on one side of the drive rod 41. Two sets of gears 43 mesh with the drive gear 25. When the drive gear 25 rotates, it will drive the two sets of gears 43 to rotate. The rotation of the two sets of gears 43 drives the drive rod 41 to rotate. In turn, the drive rod 41 drives the rollers 42 to rotate. When one set of gears 43 rotates, it will drive the two sets of rollers 42 to rotate. When the two sets of gears 43 on one side of the crossbeam 10 rotate, they will drive the four sets of rollers 42 to rotate. By providing multiple sets of rollers 42, the movable seat 30 can be better supported, so that the movable seat 30 can better support the crossbeam 10.Furthermore, the multiple sets of gears 43 effectively improve the stability of the crossbeam 10 during movement. A slide rail is provided at the bottom of the crossbeam 10, with track grooves on both the front and rear sides. The track grooves are arc-shaped. The slide rail allows for effective assembly of the crane's lifting mechanism, and the arc-shaped track grooves enable the lifting mechanism to be limited, allowing for better sliding operation. A rotating rod is installed inside the turbine 23, with its rear end connected to the drive shaft of the motor 21. A rotating seat is installed inside the crossbeam 10, with the front end of the rotating rod located inside the rotating seat. The motor 21... 1. During rotation, the rotating rod will rotate, which in turn drives the turbine 23 to rotate. A rotating seat is provided to limit the position of the front side of the rotating rod, allowing for better rotation. Support plates are provided inside the crossbeam 10, and bearings are installed inside the support plates. The drive shaft 22 is located inside the bearings. The support plates limit the position of the bearings, and the location of the drive shaft 22 within the bearings effectively limits its position, allowing for better rotation.
[0026] Working Principle: When in use, this device operates via the drive assembly 20. The drive assembly 20 moves the drive wheel 40 inside the movable seat 30, which in turn moves the crossbeam 10. The movable seat 30 effectively limits the position of the drive wheel 40. During operation, the drive assembly 20 is powered by a motor 21, which in turn drives a worm gear 24. The worm gear 24 then drives two sets of turbines 23, which in turn drive two sets of drive shafts 22. The drive gear 25 rotates, which in turn drives the drive wheel 40 to rotate. During operation, the device can simultaneously drive all four sets of drive gears 25 to rotate synchronously, ensuring that the drive wheels 40 on both sides of the crossbeam 10 move synchronously. Compared to conventional transmission methods, this effectively saves production costs and ensures the synchronicity of the left and right sides of the crossbeam 10 during movement, preventing tilting and improving the device's safety. Furthermore, the transmission via the worm gear 23 and worm 24 effectively maintains transmission precision, allowing the crossbeam 10 to start and stop more efficiently.
[0027] It should be noted that, in this document, relational terms such as "second" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A transmission mechanism for a crane traveling mechanism, characterized in that: It includes a crossbeam (10), a drive assembly (20), a movable seat (30), and a drive wheel (40). The drive assembly (20) is installed inside the crossbeam (10), the movable seat (30) is located on both sides of the crossbeam (10), and the drive wheel (40) is installed inside the movable seat (30). The drive assembly (20) includes a motor (21), drive shafts (22), turbines (23), worm gears (24), and drive teeth (25). Both sets of drive shafts (22) are installed inside the crossbeam (10). The turbines (23) are installed on the upper part of the drive shafts (22). The motor (21) is installed on the rear side of the crossbeam (10). The drive shaft of the motor (21) passes through the crossbeam (10) and is connected to the worm gears (24). The worm gears (24) mesh with the two sets of turbines (23). The drive teeth (25) are located on both sides of the drive shafts (22).
2. The crane traveling mechanism transmission mechanism according to claim 1, characterized in that: Each of the movable seats (30) is provided with an installation plate (31), and the installation plate (31) is provided with a bearing seat (32). The drive wheel (40) is installed inside the bearing seat (32).
3. The transmission mechanism of a crane traveling mechanism according to claim 1, characterized in that: The drive wheel (40) includes a drive rod (41), a roller (42) is provided on the upper part of the drive rod (41), and a gear (43) is provided on one side of the drive rod (41). The two sets of gears (43) mesh with the drive teeth (25).
4. The transmission mechanism of a crane traveling mechanism according to claim 3, characterized in that: The bottom of the crossbeam (10) is provided with a slide rail, and the front and rear sides of the slide rail are provided with track grooves, which are arc-shaped.
5. The transmission mechanism of a crane traveling mechanism according to claim 1, characterized in that: The turbine (23) has a rotating rod inside, the rear side of which is connected to the drive shaft of the motor (21). The crossbeam (10) has a rotating seat inside, and the front end of the rotating rod is located inside the rotating seat.
6. The transmission mechanism of a crane traveling mechanism according to claim 1, characterized in that: Each of the crossbeams (10) is provided with a support plate inside, and a bearing is provided inside the support plate. The drive shaft (22) is located inside the bearing.