A multi-drive hoist capable of synchronous braking

Abstract

The utility model relates to the device technical field among them, concretely relates to a kind of multi-drive crane of synchronous braking, including multiple brake modules, synchronous device is arranged between multiple brake modules, the synchronous device includes power unit and execution unit, the execution unit includes mounting frame, telescopic link is provided in the mounting frame, the movable end of the telescopic link is provided with respectively with the transmission chain of each brake module connection, utilize synchronous brake device to be able to carry out synchronous operation to multiple brake devices located in the high-speed end and low-speed end of crane, to improve the stability and uniformity of braking in this way, and then improve the use safety of hoisting equipment.

Description

Technical Field

[0001] This utility model relates to the field of equipment technology, specifically to a multi-drive crane capable of synchronous braking. Background Technology

[0002] Crane brakes are typically cascaded mechanisms, with the brakes integrated into a single transmission mechanism, either at the low-speed end or the high-speed end. When two transmission mechanisms need to operate synchronously, multiple braking devices may become asynchronous. The dangers of this asynchrony extend far beyond simply stopping a little slower; it can trigger a series of chain reactions. First, there is mechanical impact damage. Differences in braking torque or actuation time between different braking devices can cause uneven stress on the two transmission mechanisms. This can lead to momentary overload at gear meshing points, and the coupling may experience additional torque due to the speed difference between the two ends. Over time, this can cause cracks and accelerated wear in critical components, directly shortening the equipment's lifespan. Second, there is the risk of load swaying. During hoisting operations, if one brake engages first and the other follows, the load will sway due to uneven stress on the wire ropes at both ends. During luffing or traveling operations, this asynchrony can cause the load to swing laterally. If there are obstacles nearby, a collision is likely, potentially leading to the load falling and causing a safety accident. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a multi-drive crane capable of synchronous braking. By utilizing a synchronous braking device, multiple braking devices located at the crane's height and low-speed ends can operate synchronously, thereby improving the stability and uniformity of braking and ultimately enhancing the safety of the lifting equipment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multi-drive crane capable of synchronous braking, comprising multiple braking modules, a synchronization device being provided between the multiple braking modules, the synchronization device comprising a power unit and an execution unit, the execution unit comprising a mounting frame, a telescopic rod being provided within the mounting frame, and a transmission chain being provided at the movable end of the telescopic rod, which is respectively connected to each braking module.

[0005] As a further improvement to the above technical solution:

[0006] The side wall of the mounting frame is provided with guide wheels for winding the transmission chain.

[0007] The telescopic rod is installed vertically with its telescopic end located at the top. The telescopic end of the telescopic rod is provided with a mounting plate for fixing the transmission chain.

[0008] The telescopic rod is a hydraulic push rod, and the power unit is a hydraulic station.

[0009] The braking module includes a brake wheel, a brake frame is provided on the outside of the brake wheel, and a brake block is provided on the inside of the brake frame.

[0010] The braking frame includes two symmetrically distributed splicing plates, namely, a first splicing plate and a second splicing plate, the upper parts of which are rotatably connected by hinges.

[0011] The lower part of the first splicing plate is provided with a hinge seat, and the lower part of the second splicing plate is connected to the transmission chain on one side and a reset device on the other side.

[0012] The reset device includes a positioning plate and a pull rod that is rotatably connected to the splicing plate. A reset spring is provided between the pull rod and the positioning plate.

[0013] The beneficial effects of this utility model embodiment are as follows: The multi-drive crane capable of synchronous braking includes multiple braking modules, and a synchronization device is provided between the multiple braking modules. The synchronization device includes a power unit and an execution unit. The execution unit includes a mounting frame, and a telescopic rod is provided inside the mounting frame. The movable end of the telescopic rod is provided with a transmission chain that is connected to each braking module respectively. By using the synchronous braking device, multiple braking devices located at the high-speed end and low-speed end of the crane can be operated synchronously, thereby improving the stability and uniformity of braking, and thus improving the safety of the lifting equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Mounting frame; 2. Telescopic rod; 3. Drive chain; 4. Guide wheel; 5. Mounting plate; 6. Hydraulic station; 7. Brake wheel; 8. Brake frame; 9. Brake block; 10. Splicing plate one; 11. Splicing plate two; 12. Hinge; 13. Hinge seat; 14. Positioning plate; 15. Pull rod; 16. Return spring. Detailed Implementation

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] See Figure 1 This multi-drive crane has a synchronous braking function, including multiple braking modules installed on the high-speed end and low-speed end of the crane, and a synchronization device for controlling the synchronous operation of the multiple braking modules.

[0018] The power unit of the synchronization device uses a hydraulic station 6 as its power source to provide power to the entire synchronous braking system. The actuator is based on the mounting frame 1, with a telescopic rod 2 vertically mounted inside. The telescopic rod 2 is a hydraulic push rod with its telescopic end facing upwards and a mounting plate 5 at the end for fixing the transmission chain 3. One end of the transmission chain 3 is connected to the mounting plate 5, and the other end is connected to each braking module to achieve power transmission. Guide wheels 4 are also mounted on the side wall of the mounting frame 1 to guide and support the winding and movement of the transmission chain 3. By extending and retracting the telescopic rod 3, multiple transmission chains 3 can be driven to perform synchronous operations, thereby achieving synchronous operation of multiple braking modules.

[0019] The braking module is centered around a brake wheel 7, which is covered by a brake frame 8. Brake blocks 9 for contacting the brake wheel 7 are installed on the inner side of the brake frame 8. The brake frame 8 consists of symmetrically distributed splicing plates 10 and 11. The upper parts of the two splicing plates are rotatably connected by hinges 12. A hinge seat 13 is fixed to the lower part of splicing plate 10 for rotatably connecting it to the crane body or other frames. One side of the lower part of splicing plate 11 is connected to the transmission chain 3 of the synchronization device, and the opening and closing of the brake frame 8 is controlled by the tension of the transmission chain 3. A reset device is configured on the other side. The reset device includes a positioning plate 14, a pull rod 15, and a reset spring 16. One end of the pull rod 15 is rotatably connected to splicing plate 11, and the other end is connected to the positioning plate 14 via the reset spring 16, used to pull the brake frame 8 back to its initial position after braking.

[0020] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0023] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A multi-drive crane capable of synchronous braking, comprising multiple braking modules, characterized in that: A synchronization device is provided between multiple braking modules. The synchronization device includes a power unit and an execution unit. The execution unit includes a mounting frame (1). A telescopic rod (2) is provided inside the mounting frame (1). The movable end of the telescopic rod (2) is provided with a transmission chain (3) that is connected to each braking module respectively.

2. The multi-drive crane capable of synchronous braking according to claim 1, characterized in that: The mounting frame (1) is provided with guide wheels (4) for winding the transmission chain (3) on its side wall.

3. The multi-drive crane capable of synchronous braking according to claim 1, characterized in that: The telescopic rod (2) is installed vertically with its telescopic end located at the top. The telescopic end of the telescopic rod (2) is provided with a mounting plate (5) for fixing the transmission chain (3).

4. The multi-drive crane capable of synchronous braking according to claim 1, characterized in that: The telescopic rod (2) is a hydraulic push rod, and the power unit is a hydraulic station (6).

5. The multi-drive crane capable of synchronous braking according to claim 1, characterized in that: The braking module includes a brake wheel (7), a brake frame (8) is provided on the outside of the brake wheel (7), and a brake block (9) is provided on the inside of the brake frame (8).

6. The multi-drive crane capable of synchronous braking according to claim 5, characterized in that: The braking frame (8) includes symmetrically distributed splicing plate one (10) and splicing plate two (11), the upper parts of splicing plate one (10) and splicing plate two (11) being rotatably connected by a hinge (12).

7. The multi-drive crane capable of synchronous braking according to claim 6, characterized in that: The lower part of the splicing plate one (10) is provided with a hinge seat (13), and the lower part of the splicing plate two (11) is connected to the transmission chain (3) on one side and a reset device is provided on the other side.

8. The multi-drive crane capable of synchronous braking according to claim 7, characterized in that: The reset device includes a positioning plate (14) and a pull rod (15) rotatably connected to the splicing plate (11). A reset spring (16) is provided between the pull rod (15) and the positioning plate (14).

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