A counterweight trolley for a crane
Patent Information
- Application Number
- CN202522457933.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-20
AI Technical Summary
[0003]传统起重机吊装多采用单吊点或固定双吊点结构，在实际吊装过程中，被吊物的重心位置往往存在偏差，或因被吊物结构不规则导致吊点受力不均，当被吊物重心偏移时，各吊点处钢丝绳的受力会出现明显差异，部分钢丝绳有着因过载而发生断裂的风险，严重威胁作业人员安全与被吊物完好性
本实用新型通过调节油缸驱动平移框架沿主支架滑动，能够调节两个活动支架的位置；一配合被吊物重心的位置；使主支架在吊装过程中保持水平。
Smart Images
Figure CN224917333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane hoisting equipment technology, specifically a crane balance frame. Background Technology
[0002] In crane lifting operations, the lifting frame is the component that connects the crane and the object being lifted, and its structural design affects the stability of the lifting process.
[0003] Traditional cranes often use single-point or fixed double-point lifting structures. In actual lifting processes, the center of gravity of the lifted object often deviates, or the irregular structure of the lifted object leads to uneven stress on the lifting points. When the center of gravity of the lifted object shifts, the stress on the wire ropes at each lifting point will be significantly different, and some wire ropes are at risk of breaking due to overload, seriously threatening the safety of the operators and the integrity of the lifted object.
[0004] To address the aforementioned problems, this utility model proposes a balance frame for cranes, which can be easily adjusted to ensure balanced force during the lifting process. Utility Model Content
[0005] The purpose of this invention is to provide a balancing hanger for a crane, which can adjust the position of the lifting points according to the center of gravity of the object being lifted, so that the force on each lifting point is balanced, thereby solving the technical problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a crane balance frame, comprising a main support, a movable support, a wire rope, a translation frame, an adjusting cylinder, and a control system, wherein: The main support is hoisted on a crane; the main support is equipped with two adjusting cylinders and two translation frames; the translation frames are fitted onto the main support and are slidably connected to the main support; the telescopic ends of the adjusting cylinders are connected to the translation frames, and the adjusting cylinders drive the translation frames to slide along the length of the main support. There are two movable supports; each of the two movable supports is suspended below the main support via a translation frame. Each movable support is equipped with a fixed pulley; the wire rope is arranged in a W shape, with the left and right ends of the wire rope fixed to the left and right sides of the movable support; the middle of the wire rope passes over the fixed pulley; two second hooks are installed at the lowest point of the wire rope; The control system is located on the ground and controls the operation of the regulating cylinder.
[0007] Furthermore, the lower surface of the translation frame is rotatably provided with a first hook; the upper surface of the corresponding movable bracket is provided with a lifting ring, and the movable bracket is suspended on the first hook.
[0008] Furthermore, the main support is a cuboid structure with grooves on its upper surface that extend along its length; corresponding sliders are provided on the translation frame.
[0009] Furthermore, the movable support is an I-beam structure.
[0010] Furthermore, limit blocks are provided at both ends of the main support; the limit blocks are plate-shaped structures used to limit the sliding range of the translation frame.
[0011] Furthermore, the control system uses a PLC to control and adjust the movement of the regulating cylinder.
[0012] Beneficial effects This invention adjusts the position of the two movable supports by driving the translation frame to slide along the main support through the adjustment of the hydraulic cylinder; it also adjusts the position of the center of gravity of the object being lifted; thus keeping the main support level during the lifting process.
[0013] In this invention, two second hooks on the same movable support are connected by a steel wire rope that passes over a fixed pulley. Based on the mechanical properties of the fixed pulley, the tension on the two second hooks remains equal, thus avoiding the overload and breakage of a single steel wire rope.
[0014] The movable support frame of this utility model is rotatably connected to the first hook of the translation frame via a lifting ring, and can adjust the horizontal angle according to the actual placement of the object being lifted or the posture changes during the lifting process. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0016] Figure 1 This is a structural schematic diagram of the crane balancer disclosed in this utility model; Figure 2 This is a schematic diagram of the main support and translation frame structure of the crane balance gantry disclosed in this utility model; Figure 3 This is a schematic diagram of the movable support of the crane balance frame disclosed in this utility model.
[0017] In the picture: 1. Main support, 2. Movable support, 3. Wire rope, 4. Translation frame, 5. Adjusting cylinder, 6. First hook, 7. Lifting ring, 8. Fixed pulley, 9. Second hook, 10. Limit block, 11. Groove, 12. Sliding block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] To achieve the above objectives, this utility model provides the following technical solution, such as... Figure 1-3 As shown, a crane balancer includes a main support 1, a movable support 2, a wire rope 3, a translation frame 4, an adjusting cylinder 5, and a control system, wherein: The main support 1 serves as the load-bearing foundation for the entire hanger and is hoisted on a crane; the main support 1 is equipped with two adjusting cylinders 5 and two translation frames 4; The adjusting cylinder 5 is fixed on the main support 1, and the translation frame 4 is fitted on the main support 1 and slidably connected to the main support 1; the telescopic end of the adjusting cylinder 5 is connected to the translation frame 4; the adjusting cylinder 5, as a power component, performs telescopic movement under the control of the control system, driving the translation frame 4 to slide along the length direction of the main support 1, thereby adjusting the position of the lifting point to match the center of gravity position of the suspended object.
[0020] There are two movable supports 2; each of the two movable supports 2 is suspended below the main support 1 by a translation frame 4. Each movable support 2 is equipped with a fixed pulley 8; the wire rope 3 is arranged in a W shape, and the left and right ends of the wire rope 3 are fixed to the left and right sides of the movable support 2; the middle of the wire rope 3 passes around the fixed pulley 8; two second hooks 9 are provided at the lowest point of the wire rope 3; The structure of the W-shaped wire rope 3 combined with the fixed pulley 8 allows the two hooks to be subjected to more even force when lifting heavy objects.
[0021] The control system is located on the ground and uses a PLC for control. It controls the extension and retraction of the adjusting cylinder 5. In actual use, a weight sensor and a tilt sensor are required. The weight sensor is installed at the second hook 9 to monitor the force on each hook in real time and transmit the data to the PLC. The tilt sensor is installed on the main support 1 to monitor its horizontal angle. Based on the sensor feedback data, the PLC calculates the center of gravity of the suspended object and drives the adjusting cylinder 5 to make adjustments.
[0022] Furthermore, a first hook 6 is rotatably provided on the lower surface of the translation frame 4; a lifting ring 7 is provided on the upper surface of the corresponding movable support 2, and the movable support 2 is suspended on the first hook 6; the first hook 6 is used to suspend the movable support 2, and the movable support 2 can change its horizontal angle to adapt to the actual situation of the object being suspended. Furthermore, the main support 1 is a cuboid structure with a groove 11 on its upper surface along its length. A slider 12 is provided on the translation frame 4 at the position corresponding to the groove 11 of the main support 1. The slider 12 is adapted to the groove 11, so that the translation frame 4 slides along the groove 11 through the slider 12, thereby reducing the sliding resistance.
[0023] Furthermore, the movable support 2 is an I-beam structure, which can reduce the overall weight of the hanger while ensuring load-bearing capacity.
[0024] Furthermore, limit blocks 10 are provided at both ends of the main support 1; the limit blocks 10 are plate-shaped structures used to limit the sliding range of the translation frame 4 and prevent the translation frame 4 from sliding out of the main support 1.
[0025] The working principle and process are as follows: When it is necessary to lift an object, firstly, the balance frame of this utility model is hoisted onto the crane, and then the second hooks 9 on the two movable supports 2 are connected to the lifting points of the object to be lifted.
[0026] After initially determining the center of gravity of the object to be lifted, an attempt was made to lift it. If the center of gravity shifted, causing the main support frame 1 to tilt, the lifting operation was abandoned, and the object was lowered. Based on the tilt of the main support 1, the position of the two movable supports 2 is adjusted by adjusting the hydraulic cylinder 5 to drive the translation frame 4 to slide, thus keeping the main support 1 horizontal during hoisting.
[0027] During the hoisting process, since the two second hooks 9 on the same movable support 2 are connected by a steel wire rope 3 passing over a fixed pulley 8, the tension on the two second hooks 9 remains equal based on the mechanical properties of the fixed pulley 8, thus avoiding the risk of the single steel wire rope 3 breaking due to overload. At the same time, the movable support 2 is rotatably connected to the first hook 6 of the translation frame 4 through the lifting ring 7, which can adjust the horizontal angle according to the actual placement of the hoisted object.
[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A balance frame for a crane, characterized in that, It includes a main support (1), a movable support (2), a wire rope (3), a translation frame (4), an adjusting cylinder (5), and a control system, wherein: The main support (1) is hoisted on a crane; the main support (1) is equipped with two adjusting cylinders (5) and two translation frames (4); the translation frames (4) are fitted on the main support (1) and are slidably connected to the main support (1); the telescopic end of the adjusting cylinder (5) is connected to the translation frame (4), and the translation frame (4) is driven to slide along the length direction of the main support (1) by adjusting the cylinder (5); There are two movable supports (2); each of the two movable supports (2) is suspended below the main support (1) by a translation frame (4); Each movable support (2) is equipped with a fixed pulley (8); the wire rope (3) is arranged in a W shape, and the left and right ends of the wire rope (3) are fixed to the left and right sides of the movable support (2); the middle of the wire rope (3) passes around the fixed pulley (8); two second hooks (9) are provided at the lowest point of the wire rope (3); The control system is set on the ground and controls the operation of the regulating cylinder (5).
2. The crane balancer according to claim 1, characterized in that, The lower surface of the translation frame (4) is rotatably provided with a first hook (6); the upper surface of the corresponding movable bracket (2) is provided with a lifting ring (7), and the movable bracket (2) is suspended on the first hook (6).
3. The crane balancer according to claim 1, characterized in that, The main support (1) is a cuboid structure with a groove (11) on its upper surface along its length; a slider (12) is provided on the corresponding translation frame (4).
4. The crane balancer according to claim 1, characterized in that, The movable support (2) is an I-beam structure.
5. The crane balancer according to claim 1, characterized in that, The main support (1) is provided with limit blocks (10) at both ends; the limit blocks (10) are plate-shaped structures used to limit the sliding range of the translation frame (4).
6. The crane balancer according to claim 1, characterized in that, The control system uses a PLC to control and adjust the movement of the regulating cylinder (5).