Lifting balance system of crane
The lifting beam is achieved through pulley assembly and brake mechanism, which solves the problems of skewel and fixed position of the lifting beam, ensures lifting safety and accuracy, and expands the operating space.
Patent Information
- Application Number
- CN202411704440.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After long-term use of the existing crane hoist beam, the length of the wire rope deforms, causing the hoist beam to deflect, affecting the balance and lifting accuracy, and the position of the hoist beam is fixed and cannot be adjusted, limiting the operating space of the hoist.
A crane lifting balance system is designed, using pulley assembly and brake mechanism. Through the cooperation of the wire rope with the reel and pulley assembly, the balanced lifting and horizontal movement of the hanging beam is achieved, allowing the hanging beam to translate, covering a wider area and expanding. Operation space.
Effectively maintain the balance of the hanging beam, ensure lifting safety and accuracy, and expand the operating space through the translation function of the hanging beam, adapting to changes in the length of the wire rope.
Smart Images
Figure CN119191076A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cranes, in particular to a crane hoisting balance system. Background Art
[0002] The lifting beam is a special horizontal beam lifting device for lifting objects, generally used for lifting large objects and structural parts; using the lifting beam to lift objects can avoid damage to the objects by the slings, shorten the height of the slings, and reduce the lifting height of the movable pulley. In the process of lifting objects, the lifting beam needs to keep the objects balanced to ensure the lifting safety of the objects. The balance of the objects is generally determined by whether the lifting beam is balanced. In actual work, the deformation of the wire rope length varies after the lifting equipment is used for a long time, which will also cause the lifting beam to deflect, affecting the balance and lifting accuracy of the lifting beam. In addition, the wire rope is connected to the lifting beam through a pulley, and the position of the lifting beam is fixed and cannot be moved and adjusted.
[0003] The patent with authorization announcement number CN214192288U discloses a crane with rapid detection and automatic leveling, including a trolley frame, a lifting mechanism is provided on the upper part of the trolley frame, the lifting mechanism includes a motor, the output end of the motor is connected to a reducer, the output ends on both sides of the reducer drive the corresponding drums to rotate through a transmission shaft, and the upper part of the trolley frame is provided with a lifting pulley group corresponding to the two drums one by one; a hanging beam is provided under the trolley frame, both sides of the hanging beam are rotatably connected to pulleys, a rigid guide column is vertically provided on the upper part of the hanging beam, and the trolley frame is provided with a guide cylinder adapted to the rigid guide column; the hanging beam is balanced and adjusted by lifting and lowering the pulley group, and the leveling structure is complicated, and a rigid guide column is provided between the hanging beam and the trolley frame, and the position of the hanging beam is fixed and cannot be adjusted, which needs to be improved. Summary of the invention
[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a crane lifting balance system which is easy to use and can achieve balanced lifting of the hanging beam. The hanging beam can be translated, the sling can cover a wider area, and the operating space is larger, which can effectively solve the problems in the background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crane lifting balance system, comprising a trolley frame, a lifting mechanism is provided on the upper part of the trolley frame, the lifting mechanism comprises a motor, the output end of the motor is connected to a reducer, and the output ends on both sides of the reducer drive the corresponding drums to rotate through the transmission shaft; a balance frame is provided below the trolley frame, and the balance frame is provided with two pulley assemblies arranged opposite to each other, and the two ends of the wire rope are respectively wound on the two drums, and the wire rope passes around the two pulley assemblies; the balance frame is slidably matched with a connecting plate in the horizontal direction, and the lower part of the connecting plate is connected to the hanging beam; The pulley assembly includes a support plate and a brake, the support plate is connected to the balance frame, the support plate is rotatably connected to a rotating shaft, the shaft body of the rotating shaft is provided with a pulley matched with a wire rope, the shaft body of the rotating shaft is also provided with a pulley, the pulley assembly also includes a brake for braking the rotating shaft, and the brake is arranged on the balance frame; The balance frame is rotatably connected to a second pulley, which is respectively connected to the first pulleys of the two pulley assemblies through belts. A gear is coaxially arranged on the second pulley, and a rack meshing with the gear is arranged on the connecting plate. When the gear rotates, the connecting plate slides on the balance frame through the rack.
[0006] Preferably, when the brakes of the two pulley assemblies brake the corresponding rotating shafts, the pulleys of the two pulley assemblies cannot rotate, and the two drums drive the hanging beam to rise and fall through the wire rope; when the brake of one of the pulley assemblies does not brake the corresponding rotating shaft, the pulley of the pulley assembly can rotate, the drum reels the wire rope, the wire rope drives the pulley to rotate, the pulley drives its corresponding pulley 1 to rotate, and the pulley 1 drives the pulley 2 to rotate through the belt, so that the gear and the rack engage to move the hanging beam horizontally.
[0007] Preferably, a rigid guide column is vertically provided on the upper portion of the balancing frame, and a guide cylinder adapted to the rigid guide column is provided on the trolley frame.
[0008] Preferably, the balancing frame is horizontally provided with a slide rail, and the connecting plate is provided with a slide seat adapted to the slide rail.
[0009] Preferably, a plurality of electromagnetic suction cups are provided at the lower portion of the suspension beam.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the pulley assembly includes a rotating shaft, a pulley, a pulley 1 and a brake, the brake is used to brake the rotating shaft, when the brakes of the two pulley assemblies brake the corresponding rotating shafts, the wire rope bypasses the two pulley assemblies, and the two drums drive the lifting beam to rise and fall through the wire ropes, thereby achieving balanced lifting of the lifting beam; when the brake of one of the pulley assemblies does not brake the corresponding rotating shaft, the pulley of the pulley assembly can rotate, the drum reels the wire rope, the wire rope drives the pulley to rotate, the pulley drives its corresponding pulley 1 to rotate, and the pulley 1 drives the pulley 2 to rotate through the belt, so that the gear and the rack engage to make the lifting beam move horizontally, and the sling can cover a wider area and have a larger operating space. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A top view of the present invention; Figure 3 It is a schematic diagram of the structure of the pulley assembly of the present invention; Figure 4 The local structure of the present invention is shown in FIG. Figure 1 ; Figure 5 The local structure of the present invention is shown in FIG. Figure 2 .
[0012] In the figure: 1 trolley frame, 1.1 guide cylinder, 2 lifting mechanism, 2.1 motor, 2.2 motor, 2.3 transmission shaft, 2.4 drum, 3 rigid guide column, 4 balance frame, 5 pulley assembly, 5.1 rotating shaft, 5.2 pulley, 5.3 pulley 1, 5.4 brake, 5.5 support plate, 6 hanging beam, 7 connecting plate, 8 belt, 9 pulley 2, 10 gear, 11 rack. DETAILED DESCRIPTION
[0013] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.
[0014] See also Figure 1-5 The present invention provides a technical solution: a crane lifting balance system, comprising a trolley frame 1, a lifting mechanism 2 is arranged on the upper part of the trolley frame 1, the lifting mechanism 2 comprises a motor 2.1, the output end of the motor 2.1 is connected to a reducer 2.2, and the output ends on both sides of the reducer 2.2 drive the corresponding drum 2.4 to rotate through a transmission shaft 2.3; a balance frame 4 is arranged below the trolley frame 1, and the balance frame 4 is provided with two oppositely arranged pulley assemblies 5, and the two ends of the wire rope are respectively wound on the two drums 2.4, and the wire rope passes around the two pulley assemblies 5; the balance frame 4 is slidably matched with a connecting plate 7 in the horizontal direction, and the lower part of the connecting plate 7 is connected to a hanging beam 6; The steel wire rope passes through the two pulley assemblies 5, and the two drums 2.4 drive the balance frame 4 to rise and fall through the steel wire rope, thereby realizing balanced lifting of the hanging beam 6, that is, no matter how the steel wire rope changes during use, it will be balanced through the two pulley assemblies 5, ensuring that the hanging beam 6 is always in a balanced state during use, ensuring safety in use and lifting accuracy; Specifically, the pulley assembly 5 includes a support plate 5.5 and a brake 5.4. The support plate 5.5 is connected to the balance frame 4. The support plate 5.5 is rotatably connected to a rotating shaft 5.1. The shaft body of the rotating shaft 5.1 is provided with a pulley 5.2 matched with a steel wire rope. The shaft body of the rotating shaft 5.1 is also provided with a pulley 5.3. The pulley assembly 5 also includes a brake 5.4 for braking the rotating shaft 5.1. The brake 5.4 is arranged on the balance frame 4. When the pulley 5.2 rotates, the rotating shaft 5.1 rotates, and the rotating shaft 5.1 drives the pulley 5.3 to rotate. The brake 5.4 can brake the rotating shaft 5.1 to control the rotation of the rotating shaft 5.1, and then control whether the pulley 5.2 rotates. The balance frame 4 is rotatably connected with a pulley 2 9, which is respectively connected to the pulleys 1 5.3 of the two pulley assemblies 5 through belts 8. The pulley 2 9 is coaxially provided with a gear 10, and the connecting plate 7 is provided with a rack 11 meshing with the gear 10. When the gear 10 rotates, the connecting plate 7 slides on the balance frame 4 through the rack 11. When the pulley 5.2 rotates, the corresponding pulley 1 5.3 rotates, and the pulley 1 5.3 drives the pulley 2 9 to rotate through the belt 8, thereby driving the gear 10 to rotate; It can be understood that when the brakes 5.4 of the two pulley assemblies 5 both brake the corresponding rotating shafts 5.1, the pulleys 5.2 of the two pulley assemblies 5 cannot rotate, and the two drums 2.4 drive the hanging beam 6 to rise and fall through the wire ropes; when the brake 5.4 of one of the pulley assemblies 5 does not brake the corresponding rotating shaft 5.1, the pulley 5.2 of the pulley assembly 5 can rotate, the drum 2.4 reels the wire rope, the wire rope drives the pulley 5.2 to rotate, the pulley 5.2 drives its corresponding pulley 1 5.3 to rotate, the pulley 1 5.3 drives the pulley 2 9 to rotate through the belt 8, so that the gear 10 is engaged with the rack 11 to make the hanging beam 6 move horizontally, and the lower part of the hanging beam 6 is The sling can cover a wider area and has a larger operating space. The rotation of the pulley 5.2 is controlled by braking the rotating shaft 5.1 with the brake 5.4. If the pulley 5.2 does not rotate, the wire rope slides and rubs on the pulley 5.2 to achieve balanced lifting of the suspension beam. When the pulley 5.2 rotates, the wire rope rolls and rubs on the pulley 5.2. The wire rope is wound up by the drum 2.4. The wire rope drives the pulley 5.2 to rotate. The rotation of the pulley 5.2 is converted into the rotation of the gear 10, thereby achieving horizontal movement of the suspension beam 6. According to the actual situation, whether any of the pulleys 5.2 of the two pulley assemblies 5 rotates can be controlled to adjust the horizontal movement of the suspension beam 6 to the right or left. In addition, a rigid guide column 3 is vertically provided on the upper part of the balancing frame 4, and the trolley frame 1 is provided with a guide cylinder 1.1 adapted to the rigid guide column 3 to guide the balancing frame 4 to ensure that it does not sway; a slide rail is horizontally provided on the balancing frame 4, and the connecting plate 7 is provided with a slide seat adapted to the slide rail to control the running direction and ensure the movement accuracy of the connecting plate 7 on the balancing frame 4; a plurality of electromagnetic suction cups are provided at the lower part of the hanging beam 6.
[0015] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the content of the present invention.
Claims
1. A crane lifting and balancing system, comprising a trolley frame (1), characterized in that: The upper part of the trolley frame (1) is provided with a lifting mechanism (2), the lifting mechanism (2) comprising a motor (2.1), the output end of the motor (2.1) is connected to a reducer (2.2), and the output ends on both sides of the reducer (2.2) drive the corresponding drums (2.4) to rotate through the transmission shaft (2.3); a balancing frame (4) is provided below the trolley frame (1), the balancing frame (4) is provided with two pulley assemblies (5) arranged opposite to each other, the two ends of the wire rope are respectively wound around the two drums (2.4), and the wire rope passes around the two pulley assemblies (5); the balancing frame (4) is slidably matched with a connecting plate (7) in the horizontal direction, and the lower part of the connecting plate (7) is connected to a suspension beam (6); The pulley assembly (5) comprises a support plate (5.5) and a brake (5.4), the support plate (5.5) is connected to the balance frame (4), the support plate (5.5) is rotatably connected to a rotating shaft (5.1), the shaft body of the rotating shaft (5.1) is provided with a pulley (5.2) matched with a steel wire rope, the shaft body of the rotating shaft (5.1) is also provided with a pulley (5.3), the pulley assembly (5) further comprises a brake (5.4) for braking the rotating shaft (5.1), and the brake (5.4) is arranged on the balance frame (4); The balance frame (4) is rotatably connected to a second pulley (9), which is respectively connected to pulleys (5.3) of two pulley assemblies (5) through belts (8). A gear (10) is coaxially arranged on the second pulley (9), and a rack (11) meshing with the gear (10) is arranged on the connecting plate (7). When the gear (10) rotates, the rack (11) causes the connecting plate (7) to slide on the balance frame (4).
2. A crane hoisting balancing system according to claim 1, characterized in that: When the brakes (5.4) of the two pulley assemblies (5) brake the corresponding rotating shafts (5.1), the pulleys (5.2) of the two pulley assemblies (5) cannot rotate, and the two drums (2.4) drive the suspension beam (6) to rise and fall through the steel wire rope; when the brake (5.4) of one of the pulley assemblies (5) does not brake the corresponding rotating shaft (5.1), the pulley (5.2) of the pulley assembly (5) can rotate, the drum (2.4) reels the steel wire rope, the steel wire rope drives the pulley (5.2) to rotate, the pulley (5.2) drives its corresponding pulley 1 (5.3) to rotate, the pulley 1 (5.3) drives the pulley 2 (9) to rotate through the belt (8), so that the gear (10) and the rack (11) are engaged to make the suspension beam (6) move horizontally.
3. A crane hoisting balancing system according to claim 1, characterized in that: A rigid guide column (3) is vertically provided on the upper portion of the balancing frame (4), and the trolley frame (1) is provided with a guide cylinder (1.1) adapted to the rigid guide column (3).
4. A crane hoisting balancing system according to claim 1, characterized in that: The balancing frame (4) is horizontally provided with a slide rail, and the connecting plate (7) is provided with a slide seat adapted to the slide rail.
5. The crane hoisting balance system according to claim 1, characterized in that: A plurality of electromagnetic suction cups are provided at the lower part of the suspension beam (6).