Installation system for large-tonnage press pull rod and use method of installation system
By integrating the installation system of lifting equipment, electronic crane scale and winch, and utilizing force couple drive and real-time data feedback, the problems of low efficiency, poor safety and easy damage to threads when tightening heavy tie rods in confined spaces of large equipment are solved, and an efficient and safe installation process is achieved.
Patent Information
- Application Number
- CN202511413387.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2025-11-18
AI Technical Summary
In the confined space of large equipment, the existing technology for installing heavy-duty tie rods suffers from problems such as low efficiency, poor safety, difficulty in guaranteeing centering accuracy, and easy damage to threads. Especially in the installation of large-tonnage presses, traditional methods are difficult to achieve smooth, controllable, and efficient tightening of heavy-duty tie rods.
The installation system is constructed using lifting equipment, electronic crane scales, chain hoists, and symmetrically arranged first and second winches. Through the force couple drive principle and real-time weight data feedback, the heavy-duty tie rods are smoothly and efficiently screwed, ensuring the docking accuracy and smooth engagement of the threaded pairs.
It improves the success rate of tightening heavy-duty tie rods, avoids thread damage, ensures construction safety, significantly improves installation quality and efficiency, and saves manpower and resources.
Smart Images
Figure CN120964599A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of large equipment installation, in particular to a large-tonnage press rod installation system and its use method. BACKGROUND
[0002] In the field of heavy machinery manufacturing and installation, large-tonnage presses are one of the core equipment, and their structures usually contain multiple large rods that bear huge pre-tightening force. These rods are thick in diameter and heavy in weight, and need to be precisely screwed with large nuts or threaded holes on the frame through threaded connection. This installation process is the key link to realize the overall structural stability of the equipment and ensure the working accuracy.
[0003] However, in actual installation sites, especially under the condition that the foundation of large equipment has been completed and the space layout is fixed, the installation space is often very narrow and limited. In such a limited space, vertical installation and screwing operation of large-tonnage and long-size rods are faced with the following problems in the prior art: For a rod weighing dozens of tons, it needs to be accurately hoisted to align with the threaded hole in the initial stage. The traditional method mainly relies on hoisting equipment such as a traveling crane for hoisting and positioning, and the operator uses a lengthened rod and other manual tools for initial screwing. However, in a narrow space, the range of personnel activities is limited, and it is difficult to exert effective force. When the rod is screwed in a few turns, the friction between the threads increases sharply, and it is almost impossible to continue screwing by relying solely on manual force. Not only is the efficiency extremely low, but there is also a major safety risk of injury or equipment damage due to tool slipping or uneven force.
[0004] Moreover, it is difficult to coordinate hoisting and screwing. The rod must always maintain accurate verticality and centring during the screwing process. Any slight inclination may cause the threads to seize, i.e., the threaded pair to jam and be damaged, resulting in the failure of the entire installation process. In the prior art, hoisting equipment such as a traveling crane is mainly responsible for vertical hoisting and is difficult to provide torque to rotate the heavy rod around its axis. Although sometimes manual traction with chains or ropes is attempted to drive rotation, this operation method has two major defects: first, it is difficult to accurately control the angle and speed of rotation, which may easily cause installation deviation; second, it cannot ensure balanced force on the rod, which may easily cause the rod to tilt, thereby increasing the risk of wear and seizure of the threaded pair.
[0005] Due to the above-mentioned limitations of human power and control accuracy, the traditional installation method usually needs to be repeatedly tried and adjusted, which is tedious and time-consuming. A failure in one installation may require the tens of tons of rod to be hoisted out again, the threads to be checked, and the alignment to be performed again, which greatly wastes manpower and resources and seriously delays the installation period of the key equipment. SUMMARY To address the problems existing in the prior art, this invention provides an installation system and method for using large-tonnage press tie rods. It is effectively applicable to installation scenarios in confined spaces for large equipment, enabling smooth, controllable, and efficient tightening of heavy-duty tie rods. At the same time, it ensures the alignment and perpendicularity of the tie rods during tightening, avoids thread damage, and ultimately guarantees installation quality and construction safety.
[0006] The technical solution of the present invention is as follows: In a first aspect of the invention, a mounting system for a tie rod of a large-tonnage press is provided, comprising: Lifting equipment used for vertically suspending tie rods; An electronic crane scale is connected below the lifting equipment to monitor the weight of the tie rod in real time. A chain hoist is connected below the electronic crane scale, and the other end of the chain hoist is connected to a pull rod for adjusting the suspension height of the pull rod; A first winch and a second winch are symmetrically arranged on both sides of the suspended tie rod. The first winch is equipped with a first traction belt, and the second winch is equipped with a second traction belt. The first and second traction belts are wound around the outside of the tie rod, and the winding directions of the first and second traction belts are opposite. When the first and second winches are running synchronously, a pair of opposite tangential tensions are applied to the tie rod through the first and second traction belts to form a couple, driving the tie rod to rotate around its own axis. In some embodiments of the present invention, the lifting equipment is configured as a trolley, the trolley is equipped with a rotatable hook, and the hook is connected to an electronic crane scale. In some embodiments of the present invention, the electronic crane scale is provided with a display module, which is used to display weight information to the operator in real time. In some embodiments of the present invention, the first winch is provided with a first mounting base, and the second winch is provided with a second mounting base. The first mounting base and the second mounting base are detachably and horizontally symmetrically mounted on the ground on both sides of the suspended tie rod. In some embodiments of the present invention, the first traction belt and the second traction belt are arranged parallel to each other. In some embodiments of the present invention, the traction point of the first traction belt on the pull rod and the traction point of the second traction belt on the pull rod are in the same horizontal plane as the first traction belt and the second traction belt. In some embodiments of the present invention, the first traction belt is arranged perpendicular to the axis of the pull rod, and the second traction belt is arranged perpendicular to the axis of the pull rod. In some embodiments of the present application, the first traction belt is wound around the surface of the upper end of the pull rod, the second traction belt is also wound around the surface of the upper end of the pull rod, and the upper end of the pull rod is located in the upper part of the center of gravity of the pull rod; the lower end of the pull rod is provided with a threaded structure, and the ground at the bottom of the pull rod is provided with a nut, and the pull rod is connected with the nut through the threaded structure. In some embodiments of the present application, the number of turns of the first sling around the pull rod is greater than the number of turns required for the screw connection of the pull rod, the number of turns of the second sling around the pull rod is greater than the number of turns required for the screw connection of the pull rod, and the number of turns of the first sling around the pull rod is consistent with the number of turns of the second sling around the pull rod. In the second aspect of the present application, a method for using the installation system for the pull rod of a large-tonnage press is provided, comprising: The pull rod is lifted and adjusted to a vertical suspended state by using the hoisting equipment, the electronic sling scale and the chain hoist; The operator uses a tool to align the lower end of the pull rod with the target nut and screw into the nut to set the number of turns; The height of the pull rod is adjusted up and down by operating the chain hoist, and the reading of the electronic sling scale is observed at the same time until the reading is stable at the weight value of the pull rod, indicating that the pull rod is in an ideal free suspended state and the threaded pair has no abnormal interference; The first traction belt and the second traction belt are wound around the upper end of the pull rod, and the two ends of the first traction belt and the second traction belt are led to the first winch and the second winch arranged horizontally symmetrically on both sides of the pull rod; The first winch and the second winch are controlled to rotate synchronously, and the first traction belt and the second traction belt are simultaneously tensioned to apply a pair of opposite tangential forces to the pull rod to form a couple, drive the pull rod to rotate around its own axis, and screw into the target nut, and the reading of the electronic sling scale is observed during the screwing process, and the reading is stabilized at the weight value of the pull rod by adjusting the height of the pull rod through the chain hoist when the reading suddenly changes, until the lower end of the pull rod is screwed into the target nut to a predetermined depth.
[0007] The one or more technical solutions of the present application have the following beneficial effects: The application provides a mounting system for a large-tonnage press pull rod and a use method thereof, and solves the problems of low efficiency, poor safety, difficult-to-ensure centering accuracy and easy-to-damage thread in heavy pull rod screwing operation in a small space of a large equipment, and differs from the existing blind operation mode of simply hoisting and screwing the heavy pull rod, the application integrates hoisting equipment, an electronic hoist scale, an inverted chain and symmetrically arranged first and second winches to build a cooperative mounting system, can realize smooth and efficient screwing of the heavy component based on real-time weight data feedback in the pull rod screwing process, and fundamentally ensures the butt joint accuracy and smooth screwing of the thread pair through a unique couple driving principle, so that repeated screwing is not needed, the success rate of one-time screwing is greatly improved, and thread damage is avoided, so that the installation quality and operation efficiency are significantly improved while ensuring construction safety, and finally the installation quality and construction safety are ensured, and manpower and resources are saved, wherein: The first and second winches are arranged, and a couple driving is formed by cooperating with the first and second traction belts with opposite winding directions, the screwing mode completely relying on manpower is replaced, a continuous, smooth and strong rotation torque is provided for the pull rod, the human limit is broken, safety accidents caused by tool slipping or excessive force are avoided, and safe, labor-saving and efficient screwing is realized; Secondly, the electronic hoist scale monitors the weight change in the pull rod screwing process in real time, provides accurate weight data feedback for the operator, the inverted chain adjusts the height of the pull rod according to the feedback, the pull rod is always in an ideal free hanging state, the couple generated by the symmetrically arranged first and second winches ensures that the pull rod only rotates around the axis and does not produce lateral deviation, and the three work cooperatively, so that the centering property and perpendicularity of the pull rod in the screwing process are fundamentally ensured, and the risk of damage to the thread pair is greatly reduced; The screwing and mounting method of the application optimizes the tedious and repeated trial-and-error process into a standard process which is predictable and controllable based on data feedback, the centering deviation can be quickly found and corrected through real-time monitoring of the electronic hoist scale and rapid adjustment of the inverted chain, the huge rework workload of hoisting the heavy pull rod out of the screwing process and recentering due to thread seizure is avoided, and the installation efficiency is greatly improved, and the installation period of the key equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 FIG. 1 is a schematic view of the composition of the mounting system for the large-tonnage press pull rod provided in the embodiment 1 of the application.
[0009] In the figure: 1, hook; 2, electronic hoist scale; 3, inverted chain; 4, upper end of pull rod; 5, first winch; 6, second winch; 7, pull rod; 8, lower end of pull rod; 9, nut; 10, first traction belt; 11, second traction belt. DETAILED DESCRIPTION
[0010] The application will be further described below in connection with the accompanying drawings and embodiments.
[0011] Embodiment 1 In a typical embodiment of the application, as shown in the drawings, a mounting system for a large-tonnage press pull rod is provided, comprising: Figure 1 A lifting device for vertically suspending the pull rod 7; An electronic hoist scale 2 connected below the lifting device for real-time monitoring of the weight of the pull rod 7; A chain 3 connected below the electronic hoist scale 2, the other end of the chain 3 being connected to the pull rod 7 for adjusting the suspension height of the pull rod 7; A first winch 5 and a second winch 6, the first winch 5 and the second winch 6 being symmetrically arranged on both sides of the suspended pull rod 7, respectively, the first winch 5 being provided with a first traction belt 10, and the second winch 6 being provided with a second traction belt 11, the first traction belt 10 and the second traction belt 11 being wound around the outside of the pull rod 7, respectively, the winding directions of the first traction belt 10 and the second traction belt 11 being opposite, so that when the first winch 5 and the second winch 6 are operated synchronously, a pair of opposite tangential forces are applied to the pull rod 7 by the first traction belt 10 and the second traction belt 11 to form a couple, driving the pull rod 7 to rotate about its own axis. The mounting system for a large-tonnage press pull rod and the method of use thereof provided by the application solve the problems of low efficiency, poor safety, difficulty in ensuring centering accuracy, and damage to threads in the process of screwing a heavy pull rod 7 in a narrow space of a large device, which are different from the existing blind operation method of simply hoisting and screwing the heavy pull rod 7. By integrating the lifting device, the electronic hoist scale 2, the chain 3, and the symmetrically arranged first winch 5 and second winch 6, the application constructs a set of collaborative installation system, which can realize smooth and efficient screwing of heavy components based on real-time weight data feedback during the screwing process of the pull rod 7, and fundamentally ensure the docking accuracy and smoothness of the thread pair through the unique couple driving principle, without the need for repeated screwing, greatly improving the success rate of one-time screwing and avoiding damage to the threads, thereby significantly improving the installation quality and work efficiency while ensuring construction safety, ultimately ensuring installation quality and construction safety, and saving manpower and resources.
[0012] The electronic sling scale 2 provides weight data in the hoisting and screwing process, so that the weight reading can be used to judge the whole operation process, and the traditional experience-dependent blind screwing mode is changed into a quantifiable operation mode, the chain block 3 is used as a height adjusting mechanism, and technical difficulties that large hoisting equipment is difficult to accurately fine tune are solved, the first winch 5 and the second winch 6 are symmetrically arranged and cooperate with the first traction belt 10 and the second traction belt 11 which are wound in opposite directions, and a pure rotation driving unit based on the principle of couple is formed, a torque is generated to make the pull rod 7 rotate around its own axis, and a resultant force which causes the pull rod 7 to deviate laterally is not generated, so that the strong rotation power is provided, and the vertical posture of the pull rod 7 is ensured, and the risk that the screw is stuck due to uneven force is effectively avoided.
[0013] In some embodiments of the present application, the hoisting equipment is provided as a travelling crane, and the travelling crane is provided with a rotatable hook 1, and the hook 1 is connected with the electronic sling scale 2.
[0014] In some embodiments of the present application, the electronic sling scale 2 is provided with a display module, and the display module is used to display weight information to an operator in real time.
[0015] Through the above arrangement, the operator does not need to guess the force state of the pull rod 7 by feeling or experience, but can accurately judge whether the pull rod 7 is in an ideal free suspension state or whether thread interference or jamming occurs in the screwing process through the digital change on the display module. Real-time feedback enables the operator to intervene and adjust in a timely and active manner, for example, to fine tune the height of the chain block 3, greatly improving the controllability and success rate of the screwing process, preventing thread damage and ensuring installation accuracy. In some embodiments of the present application, the first winch 5 is provided with a first mounting seat, the second winch 6 is provided with a second mounting seat, and the first mounting seat and the second mounting seat are horizontally and symmetrically mounted on the ground on both sides of the suspended pull rod 7.
[0016] The detachable first mounting seat and the second mounting seat enable the first winch 5 and the second winch 6 to be quickly deployed and adjusted according to the specific space layout and the position of the pull rod 7 on site, adapt to different sizes and specifications of the press installation scene, and the horizontal and symmetric mounting of the first mounting seat and the second mounting seat ensures that the direction of the pulling force applied to the pull rod 7 is accurate and symmetric, which is the basis for forming an effective couple. At the same time, the stable ground installation provides a reliable anchoring point for the winch, ensuring the system rigidity and operation stability when a large pulling force is applied, avoiding the risk of equipment movement or overturning, and ensuring the stability and safety of the force application process. In some embodiments of the present application, the first traction belt 10 and the second traction belt 11 are arranged in parallel with each other. It can be understood that if the first traction belt 10 and the second traction belt 11 are not parallel, unnecessary radial or axial forces will be generated, which will interfere with the rotational movement of the pull rod 7, or even cause the pull rod 7 to tilt. The parallel arrangement of the first traction belt 10 and the second traction belt 11 can ensure that the two tangential forces applied to the pull rod 7 are equal in size, completely opposite in direction, and parallel in action line, thereby generating a pure rotational couple without additional deflection torque.
[0017] In some embodiments of the present application, the traction point of the first traction belt 10 on the pull rod 7 and the traction point of the second traction belt 11 on the pull rod 7 are in the same horizontal plane. Through the above arrangement, it is ensured that the action line of the rotational torque is perpendicular to the axis of the pull rod 7, effectively converting the pulling force of the winch into a torque for driving the rotation of the pull rod 7, and avoiding any additional bending moment that will cause the pull rod 7 to bend or swing.
[0018] In some embodiments of the present application, the first traction belt 10 is arranged perpendicular to the axis of the pull rod 7, and the second traction belt 11 is arranged perpendicular to the axis of the pull rod 7.
[0019] When the first traction belt 10 and the second traction belt 11 are perpendicular to the axis of the pull rod 7, the pulling force generated by the first traction belt 10 and the second traction belt 11 can be fully converted into effective tangential force for driving the rotation of the pull rod 7, achieving efficient conversion of traction force into rotational torque.
[0020] In some embodiments of the present application, the first traction belt 10 is wound around the surface of the upper end 4 of the pull rod 7, the second traction belt 11 is also wound around the surface of the upper end 4 of the pull rod 7, and the upper end 4 of the pull rod 7 is located above the center of gravity of the pull rod 7; the lower end 8 of the pull rod 7 is provided with a threaded structure, and the ground at the bottom of the pull rod 7 is provided with a nut 9, and the pull rod 7 is connected with the nut 9 through the threaded structure.
[0021] By arranging the force application traction points of the first traction belt 10 and the second traction belt 11 above the center of gravity of the pull rod 7, it is beneficial to drive the rotation of the entire pull rod 7 while ensuring the balance of the pull rod 7.
[0022] In some embodiments of the present application, the number of turns of the first traction belt 10 wound around the pull rod 7 is greater than the number of turns required for the screw connection of the pull rod 7, the number of turns of the second traction belt 11 wound around the pull rod 7 is greater than the number of turns required for the screw connection of the pull rod 7, and the number of turns of the first traction belt 10 wound around the pull rod 7 is consistent with the number of turns of the second traction belt 11 wound around the pull rod 7. Through the above setting, it is ensured that the first winch 5 and the second winch 6 do not need to stop halfway to re-wind the traction belt during the entire rotation of the pull rod 7, and the sufficient number of winding turns provides the necessary friction to ensure that the traction belt and the pull rod 7 do not slip, and the number of winding turns of the first traction belt 10 and the second traction belt 11 is consistent, which ensures the synchronization of the first winch 5 and the second winch 6 when winding and unwinding the first traction belt 10 and the second traction belt 11, thereby maintaining the balance and continuous action of the couple, realizing uninterrupted continuous rotation operation, greatly improving the installation efficiency, and avoiding the loss of centering accuracy and safety risks caused by intermediate adjustment.
[0023] In the second aspect of the present application, a method for using the installation system for large-tonnage press pull rods is provided, comprising: The pull rod 7 is lifted and adjusted to a vertical suspended state by using the lifting equipment, the electronic hoist scale 2 and the chain fall 3; The operator uses a tool to align the lower end 8 of the pull rod with the target nut 9 and screw into the nut 9 to set the number of turns; The height of the pull rod 7 is adjusted up and down by operating the chain fall 3, and the reading of the electronic hoist scale 2 is observed at the same time until the reading is stable at the weight value of the pull rod 7, indicating that the pull rod 7 is in an ideal free suspended state and the threaded pair has no abnormal interference; The first traction belt 10 and the second traction belt 11 are wound around the upper end 4 of the pull rod, and the two ends of the first traction belt 10 and the second traction belt 11 are led to the first winch 5 and the second winch 6 arranged horizontally symmetrically on both sides of the pull rod 7; The first winch 5 and the second winch 6 are controlled to rotate synchronously, and at the same time the first traction belt 10 and the second traction belt 11 are tensioned to exert a pair of opposite tangential forces on the pull rod 7 to form a couple, driving the pull rod 7 to rotate around its own axis, and the target nut 9 is rotated to the predetermined depth, and the reading of the electronic hoist scale 2 is observed during the rotation, and the reading is stabilized at the weight value of the pull rod 7 by adjusting the height of the pull rod 7 through the chain fall 3 when the reading changes suddenly.
[0024] Although the specific embodiments of the present application have been described above with reference to the accompanying drawings, it is not a limitation on the scope of protection of the present application, and those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present application without creative labor are still within the scope of protection of the present application.
Claims
1. A mounting system for a tie rod of a large tonnage press, characterized by, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
2. A mounting system for a tie rod of a large tonnage press as defined in claim 1, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
3. A mounting system for a tie rod of a large tonnage press as defined in claim 2, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
4. A mounting system for a tie rod of a large tonnage press as defined in claim 1, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
5. A mounting system for a tie rod of a large tonnage press as defined in claim 1, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
6. A mounting system for a tie rod of a large tonnage press as defined in claim 5, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
7. A mounting system for a tie rod of a large tonnage press as defined in claim 6, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
8. A mounting system for a tie rod of a large tonnage press as defined in claim 1, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
9. A mounting system for a tie rod of a large tonnage press as defined in claim 1, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod.
10. A method of using a mounting system for a tie rod of a large tonnage press according to any one of claims 1-9, wherein, The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. The utility model relates to a kind of lifting device, electronic sling scale and first and second winches for adjusting the height of a vertical suspension rod. 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