Balance beam device installed on movable pulley block

Abstract

The utility model relates to the technical field of constructional engineering, and discloses a balance beam device mounted on a movable pulley block, which comprises a winding drum group and a support frame, a fixed pulley block is rotatably connected in the support frame, and the movable pulley block is rotatably connected in the support frame. The winding drum set is connected with the movable pulley set through a steel wire rope and the fixed pulley set, a balance beam is arranged outside the movable pulley set, two first pin shafts are arranged at the top end of the balance beam, a connecting frame is fixedly connected to the top end of the balance beam through the first pin shafts, and a second pin shaft is arranged at the top end of the connecting frame. A wedge-shaped connector is arranged at the top end of the second pin shaft. In the utility model, when the multiplying power of the pulleys of the movable pulley block is an odd number, the multiplying power is fixed, the balance beam is arranged on the movable pulley block, and only the balance pulley in the middle of the movable pulley block needs to be taken off and replaced by the balance beam, so that the design workload and the manufacturing cost are greatly reduced, and the cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a balance beam device installed on a movable pulley block. Background Technique

[0002] For metallurgical cranes for hoisting molten metal and some general bridge cranes for hoisting important items, a wire rope winding system with two wire ropes is required. When one of the wire ropes breaks, the hoisted object will not directly fall to the ground.

[0003] The design of the traditional two-wire rope winding system is as follows: a balance beam is adopted, and the terminals of the two wire ropes are fixed to both ends of the balance beam through wedge-shaped joints. The balance beam is installed beside the fixed pulley on the trolley frame, and the number of pulleys in the movable pulley block must be even. The general bridge crane standard adopts a wire rope winding system with one wire rope, and the pulley ratio of the movable pulley block can be even or odd, such as 2, 3, 4, 5, 6, etc. When the design requires a two-wire rope winding system, there is no problem if the ratio is even. When the ratio is odd, it must be changed to an even number to achieve. The change of the ratio involves a large range, and the reduction ratio of the reducer, the wire rope model, the drum length, the trolley gauge, etc. all need to be changed, and a large amount of non-standard design work needs to be done. For some existing cranes, if the user requests to be modified to a two-wire rope winding system, the modification workload and cost are very large. Therefore, in view of the above deficiencies, a balance beam device installed on a movable pulley block is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a balance beam device installed on a movable pulley block, when the user requests to be modified to a two-wire rope winding system, the modification workload and cost are very large.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A balance beam device installed on a movable pulley block, including a drum group and a support frame. A fixed pulley group is rotatably connected inside the support frame, and a movable pulley group is rotatably connected inside the support frame. The drum group is connected to the movable pulley group through a wire rope and the fixed pulley group. A balance beam is arranged outside the movable pulley group. Two pin shafts I are arranged at the top of the balance beam. The top of the balance beam is fixedly connected to a connecting frame through the pin shaft I. A pin shaft II is arranged at the top of the connecting frame, and a wedge-shaped joint is arranged at the top of the pin shaft II. A wire rope clip is arranged outside the wedge-shaped joint.

[0007] Further, the wire rope is installed on the wedge-shaped joint through the wire rope clip.

[0008] The utility model has the following beneficial effects:

[0009] In the utility model, when the multiple of the pulley of the movable pulley block is odd, the multiple remains unchanged, and the balance beam is installed on the movable pulley block. Only the balance pulley in the middle of the movable pulley block needs to be removed and replaced with a balance beam, which greatly reduces the design workload and manufacturing cost and significantly reduces the cost. Description of the Drawings

[0010] Figure 1 is a perspective view of a balance beam device installed on a movable pulley block proposed by the utility model;

[0011] Figure 2 is a schematic structural diagram of a drum set of a balance beam device installed on a movable pulley block proposed by the utility model;

[0012] Figure 3 is a schematic structural diagram of a balance beam of a balance beam device installed on a movable pulley block proposed by the utility model;

[0013] Figure 4 is a schematic structural diagram of a movable pulley block of a balance beam device installed on a movable pulley block proposed by the utility model.

[0014] Legend Explanation:

[0015] 1. Drum set; 2. Support frame; 3. Fixed pulley block; 4. Movable pulley block; 5. Balance beam; 6. Steel wire rope; 7. Pin shaft 1; 8. Connecting frame; 9. Pin shaft 2; 10. Wedge joint; 11. Steel wire rope clip. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Refer to Figure 1 - Figure 4, an embodiment provided by the present utility model: a balance beam device installed on a movable pulley block, comprising a drum set 1 and a support frame 2. A fixed pulley block 3 is rotatably connected inside the support frame 2. This connection method can greatly reduce friction and ensure the stable operation of the fixed pulley block 3. A movable pulley block 4 is rotatably connected inside the support frame 2. The drum set 1 is tightly connected to the powerful movable pulley block 4 through a strong and wear-resistant steel wire rope 6 and an accurate and efficient fixed pulley block 3. Such a connection structure can ensure the uniform transmission of force, effectively avoid energy loss, and greatly improve the working efficiency of the entire system. A balance beam 5 is arranged outside the movable pulley block 4. The balance beam 5 can effectively maintain the stability of the system and greatly reduce the failures and safety hazards caused by imbalance. This setting is a detachable connection. Two pin shafts 1 are arranged at the top of the balance beam 5, which can bear huge tensile and shear forces and provide a solid and reliable guarantee for the connection of the entire device. The top of the balance beam 5 is fixedly connected to a connecting frame 8 through a pin shaft 1. A pin shaft 2 is arranged at the top of the connecting frame 8. A wedge joint 10 is arranged at the top of the pin shaft 2, which can effectively prevent the loosening and falling off of components and improve the safety of the entire device. A steel wire rope clip 11 is arranged outside the wedge joint 10, which effectively ensures the stable position of the steel wire rope 6. The steel wire rope 6 is installed on the wedge joint 10 through the steel wire rope clip 11 to ensure that the steel wire rope 6 will not displace and loosen during the working process, greatly improving the working reliability and safety of the entire device.

[0018] Working principle: First, the wire rope 6 is firmly installed on the connecting frame 8 through the wedge joint 10, wire rope clip 11 and pin two 9. This connection ensures the stability and reliability of the wire rope 6 during operation. Then, the connecting frame 8 is connected to the balance beam 5 through the pin one 7. The balance beam 5 plays a key role in balancing and supporting, and it can effectively disperse and transmit the force from the connecting frame 8. Then, the balance beam 5 is installed on the moving pulley shaft. When the moving pulley block 4 operates, the balance beam 5 can keep the whole system in a stable state. Specifically, when a wire rope winding system with two wire ropes 6 is required by the design, in the traditional structure, if the pulley ratio of the moving pulley block 4 is odd, it often needs to be changed to an even number. And this innovative balance beam 5 device well solves this problem. For example, in some existing cranes with an odd pulley ratio, if the user requires to modify it to a wire rope winding system with two wire ropes 6, in the past, it might be necessary to make large-scale adjustments and modifications to the whole structure, involving many components and complex processes, not only with a huge design workload but also a high manufacturing cost. But with this balance beam 5 device, only by installing and configuring according to the above connection relationship can the modification be easily achieved, greatly reducing the workload and cost of the modification. This balance beam 5 device effectively solves the traditional problem through ingenious structural design and component connection, improves the performance and efficiency of the system, reduces the design and modification costs, and solves the problem that when a wire rope winding system with two wire ropes 6 is required by the design, the odd pulley ratio of the moving pulley block 4 in the traditional structure must be changed to an even number. Greatly reduces the design workload and manufacturing cost. Especially for some existing cranes with an odd pulley ratio, if the user requires to modify it to a wire rope winding system with two wire ropes 6, the modification workload and cost are greatly reduced.

[0019] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A balance beam device mounted on a movable pulley block, comprising a drum block and a support frame, characterized in that: The support frame is internally rotatably connected with a fixed pulley block, the support frame is internally rotatably connected with a movable pulley block, the drum block is connected to the movable pulley block via a wire rope and the fixed pulley block, a balance beam is arranged outside the movable pulley block, two pin shafts 1 are arranged at the top of the balance beam, the top of the balance beam is fixedly connected with a connecting frame via pin shaft 1, the top of the connecting frame is arranged with pin shaft 2, the top of the pin shaft 2 is arranged with a wedge joint, and a wire rope clamp is arranged outside the wedge joint.

2. A balance beam device installed on a movable pulley block according to claim 1, characterized in that: The steel wire rope is installed on the wedge joint through a steel wire rope clamp.

Images