High-temperature environment clamp crane
The pure mechanical clamp structure driven by the lifting and closing linkage solves the problem that traditional clamps cannot work in high-temperature environments, realizes the safe and efficient lifting of high-temperature slabs, reduces equipment maintenance costs and improves system reliability.
Patent Information
- Application Number
- CN202512032998.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional clamps cannot work effectively in high-temperature environments, especially when lifting high-temperature slabs, where electromechanical and hydraulic components cannot function properly, causing the equipment to malfunction.
The purely mechanical clamp structure, which is driven by a lifting and opening/closing linkage, includes a lifting mechanism, an opening/closing mechanism, and a scissor clamp. The lifting and opening/closing of the clamp is achieved through the linkage of the lifting wire rope and the opening/closing wire rope, thus avoiding the use of electric drive devices and sensors.
The system enables safe and efficient lifting of the clamps in high-temperature environments, reducing equipment maintenance costs, improving system reliability, and allowing for flexible control of clamp opening and height, thereby enhancing operational efficiency.
Smart Images
Figure CN121591098A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of slab handling equipment technology, and more particularly to a high-temperature environment clamping crane. Background Technology
[0002] Currently, slab clamps are designed for high-temperature slabs, with temperatures reaching 800–900°C. However, the ambient temperature of these clamps is typically no higher than 60°C. Apart from areas directly exposed to heat radiation requiring radiation protection, the clamps themselves are less affected by high temperatures. Therefore, traditional slab clamps, such as electric sliding clamps, hydraulic clamps, and automatic clamps, are equipped with necessary mechanisms and sensors for lifting operations involving multiple slabs, such as electric opening and closing mechanisms, electric adjustment mechanisms (to adjust the number of slabs to be clamped), and opening degree detection sensors.
[0003] In the slab production process, to achieve energy conservation, environmental protection, and reduce operating costs, maintaining the slab temperature in a holding furnace during the temporary storage period before hot rolling is a highly effective production mode. In this scenario, the temperature inside the holding furnace can reach 800–900℃. Furthermore, in scenarios such as soaking furnaces, ambient temperatures exceeding 1200℃ are required. At such temperatures, the electromechanical and hydraulic components, such as the motors and sensors of the transmission mechanisms configured on traditional clamps cannot function effectively and cannot achieve normal operational functions.
[0004] Therefore, traditional sliding clamps, hydraulic clamps, and automatic clamps are not suitable for scenarios where the ambient temperature reaches 100 to 1600℃, which require lifting multiple slabs in high-temperature environments. Summary of the Invention
[0005] To address the aforementioned technical problems, a high-temperature environment clamping crane is provided. This invention achieves safe, efficient, and unmanned hoisting of slabs in high-temperature environments by employing a lifting and closing linkage-driven purely mechanical clamp.
[0006] To achieve the above objectives, the present invention provides a high-temperature environment clamping crane, comprising: a hoisting mechanism, an opening and closing mechanism, and a clamp; The clamp is a scissor-type automatic clamp, and the clamp body is not equipped with an electric drive device or sensor components; the lifting mechanism and the opening and closing mechanism adopt a lifting and opening / closing linkage drive mechanism; the lifting and opening / closing linkage drive mechanism includes a lifting drum, an opening and closing drum, a lifting wire rope, an opening and closing wire rope, and a pulley block; the lifting wire rope is wound on the lifting drum; one end of the opening and closing wire rope is fixed to the lifting drum, and the other end passes around the pulley block and is fixed to the opening and closing drum; the pulley block includes a first lifting fixed pulley, a second lifting fixed pulley, an opening and closing fixed pulley, and an opening and closing movable pulley.
[0007] Furthermore, the lifting mechanism has an even multiplier, and the opening and closing mechanism has the same multiplier as the lifting mechanism.
[0008] Furthermore, on the hoisting drum, the winding diameter of the hoisting wire rope is the same as the winding diameter of the opening and closing wire rope, satisfying the following relationship:
[0009] in, This refers to the bottom diameter of the hoisting drum where the hoisting wire rope is wound. The diameter of the lifting wire rope. This refers to the bottom diameter of the hoisting drum where the opening and closing wire rope is wound. The diameter of the opening and closing wire rope.
[0010] Furthermore, the operating logic of the lifting and closing linkage drive mechanism is as follows: When the hoisting drum rotates and the opening and closing drum is braked, the clamp and the load move up and down, and the movable pulley of the opening and closing mechanism moves up and down together with the clamp; When the hoisting drum is braked and the opening / closing drum is driven, the lifting beam of the clamp remains stationary, and the clamp legs open and close.
[0011] Furthermore, the clamp includes a lifting beam, an opening and closing beam, a first connecting rod, a second connecting rod, clamp legs, and a guide rod; the movable pulley of the lifting mechanism is fixed on the lifting beam; one end of the guide rod is connected to the opening and closing mechanism, and the other end is connected to the opening and closing beam.
[0012] Furthermore, the guide rod is a form in which the opening and closing mechanism is connected to the opening and closing beam, or it can be connected by a chain or wire rope.
[0013] Furthermore, the opening degree of the clamp and the distance between the clamp teeth and the lifting beam The real-time stroke of the guide rod controlled by the opening and closing mechanism First link The length of the jaw leg from the connection point between the first link and this jaw leg to the connection point between the second link and this jaw leg. The length from the point where the second link connects to the jaw leg, perpendicular to the jaw leg's end. The angle between the line segment from the connection point of the first link to this clamp leg to the connection point of the second link to this clamp leg and the line segment from the connection point of the second link to this clamp leg to the clamp tip of this clamp leg. The vertical distance from the hinge point between the first connecting rod and the lifting beam to the hinge point between the second connecting rod and the clamp leg. And the distance from the second link of each of the two jaws, perpendicular to the connection point of the jaws, to the jaw tip of the jaw. The analytical calculation yielded the following results:
[0014]
[0015]
[0016] And before the clamps descend to the gripping height, ; in, The width of the slab. To reserve quantity, The unit of length is mm, and the unit of angle is radians; , for The minimum value of A when the maximum opening is reached. for The maximum value of A when the minimum opening is reached. , All of these are design parameters; .
[0017] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: 1. The present invention provides a high-temperature environment clamping crane, which does not have a drive device, sensor or other electromechanical and hydraulic components on the clamp, is suitable for any high-temperature environment, and has the attributes of energy saving, environmental protection and cost reduction.
[0018] 2. The present invention provides a high-temperature environment clamping crane with flexible clamp opening control. The clamp opening can be controlled as needed according to the width of the slab before the crane reaches the target position, thereby shortening the clamping time and improving the work efficiency.
[0019] 3. The high-temperature environment clamping crane provided by the present invention can flexibly control the clamp height and clamp tooth position as needed through the lifting and closing linkage mechanism and analytical calculation, and can clamp high-temperature slabs in one step according to a specified number of times. It solves the problems of difficult adjustment and cumbersome operation process of traditional clamps, and is more concise and efficient. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a top-view schematic diagram of a typical layout of the trolley of a high-temperature environment clamping crane according to the present invention; Figure 2 This is a schematic diagram of the wire rope winding of a high-temperature environment clamp crane according to the present invention; Figure 3 This is a schematic diagram of the opening structure of a high-temperature environment clamp crane clamp according to the present invention; Figure 4 This is a schematic diagram of the clamp closing structure of a high-temperature environment clamp crane according to the present invention; Figure 5 This is a schematic diagram of the overall structure of a high-temperature environment clamp crane according to the present invention.
[0022] In the diagram: 1. Hoisting drum; 2. First hoisting fixed pulley; 3. Opening and closing movable pulley; 4. Opening and closing fixed pulley; 5. Opening and closing drum; 6. Second hoisting fixed pulley; 7. Hoisting movable pulley; 8. First connecting rod; 9. Guide rod; 10. Second connecting rod; 11. Hoisting crossbeam; 12. Clamping leg; 13. Opening and closing crossbeam. Detailed Implementation
[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0027] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.
[0030] like Figures 1 to 5As shown, this embodiment provides a high-temperature environment clamping crane, including: a hoisting mechanism, an opening and closing mechanism, and a clamp; The clamp is a scissor-type automatic clamp; the lifting mechanism and the opening and closing mechanism adopt a lifting and opening / closing linkage drive mechanism; the lifting and opening / closing linkage drive mechanism includes a lifting drum 1, an opening and closing drum 5, a lifting wire rope, an opening and closing wire rope, and a pulley block, wherein the pulley block includes a first lifting fixed pulley 2, a second lifting fixed pulley 6, a lifting movable pulley 7, an opening and closing fixed pulley 4, and an opening and closing movable pulley 3; In addition to the hoisting wire rope, the hoisting drum 1 is also wound with an opening and closing wire rope. One end of the opening and closing wire rope is fixed to the hoisting drum 1, and after passing through the pulley block, the other end is fixed to the opening and closing drum 5. This structure solves the problem that electromechanical and hydraulic components on traditional clamps cannot work effectively in high-temperature environments of 100-1200℃. Through the clamp body with a purely mechanical structure and linkage drive, there is no need to install vulnerable electrical components in high-temperature areas, which significantly reduces equipment maintenance costs and improves the reliability of the system in harsh environments.
[0031] Furthermore, the multiplier of the hoisting mechanism is an even number a ( (where n is a natural number and n>0), and the multiplier of the opening and closing mechanism is the same as that of the hoisting mechanism; on the hoisting drum 1, the winding diameter of the hoisting wire rope is the same as that of the opening and closing wire rope, satisfying the following relationship:
[0032] in, The bottom diameter of the hoisting drum 1 is the portion of the hoisting wire rope wound on the hoisting drum. The diameter of the lifting wire rope. The bottom diameter of the section where the opening and closing wire rope is wound on the hoisting drum 1. The diameter of the opening and closing wire rope is specified in this embodiment. This ensures that the winding and unwinding speed of the opening and closing wire rope is completely synchronized with the lifting wire rope when the lifting drum 1 rotates. This ensures that the wire rope system of the opening and closing mechanism maintains normal tension and winding during the lifting and lowering process of the clamp, preventing rope tangling or uneven force.
[0033] Furthermore, the operating logic of the lifting and closing linkage drive mechanism is as follows: Lifting motion: When the hoisting drum 1 rotates and the opening and closing drum 5 is braked, the clamp and the load move up and down. At this time, the moving pulley of the opening and closing mechanism moves up and down with the clamp to keep the opening and closing wire rope winding system normal. Opening and closing motion: When the hoisting drum 1 is braked and the opening and closing drum 5 is driven, the lifting beam 11 of the clamp remains stationary, and the clamp legs 12 of the clamp perform opening and closing actions. When the opening and closing mechanism reaches the upper limit, the clamp opening is at its maximum; when it reaches the lower limit, the clamp opening is at its minimum.
[0034] Furthermore, to adapt to high-temperature environments, the clamp body is not equipped with electric drive devices and sensor components, and adopts a completely mechanical structure. The clamp includes a lifting beam 11, an opening and closing beam 13, a first connecting rod 8, a second connecting rod 10, clamp legs 12, and a guide rod 9. The movable pulley of the lifting mechanism is fixed on the lifting beam 11; the guide rod 9 connects the opening and closing mechanism with the opening and closing beam 13, and the guide rod 9 can also be connected by a chain or wire rope.
[0035] clamp opening and the distance between the clamp teeth and the lifting beam 11 The process of opening and closing mechanism First link 8 The length of the clamp leg 12 from the connection point of the first link 8 and the clamp leg 12 to the connection point of the second link 10 and the clamp leg 12. The length from the point where the second connecting rod 10 connects to the jaw leg 12, perpendicular to the jaw end of the jaw leg 12. The angle between the line segment from the connection point of the first link 8 and the clamp leg 12 to the connection point of the second link 10 and the clamp leg 12, and the line segment from the connection point of the second link 10 and the clamp leg 12 to the clamp tip of the clamp leg 12. The vertical distance from the hinge point of the first connecting rod 8 and the lifting beam 11 to the hinge point of the second connecting rod 10 and the clamp leg 12 and the distance from the connection point of the second link 10 of each of the two jaws 12 to the jaw tip of the jaw 12. Analytical calculations yielded the following results:
[0036]
[0037]
[0038] And before the clamps descend to the gripping height, ; in, The width of the slab. To reserve quantity, The unit of length is mm, and the unit of angle is radians; , for The minimum value of A when the maximum opening is reached. for The maximum value of A when the minimum opening is reached. , All of these are design parameters; ; Through analytical calculations, precise control of the clamp's posture is achieved, enabling the system to accurately control the opening and jaw position even when the clamp itself has no sensors, providing a data foundation for unmanned automated grasping.
[0039] Workflow: The working process of this high-temperature environment clamp crane relies on a lifting and closing linkage drive mechanism located in the low-temperature zone. When the lifting drum 1 rotates and the opening and closing drum 5 is in a braking state, the lifting and opening / closing mechanisms operate at the same ratio and the drum winding diameter satisfies the synchronization constraint formula. The opening and closing pulley 3 moves synchronously with the clamp as a whole, thereby driving the purely mechanical clamp without electronic components and the load to achieve lifting and lowering movements. When performing the opening and closing action, the lifting drum 1 is braked to lock the vertical position of the lifting beam 11. The opening and closing drum 5 independently drives the opening and closing wire rope to pull the opening and closing beam 13 through the guide rod 9, driving the clamp legs of the scissor mechanism to complete the opening adjustment. In actual operation, the system first controls the clamp opening to be greater than the width of the slab for unloaded descent. After reaching the clamping height, the opening and closing mechanism lifts upward to generate initial clamping force. Subsequently, in conjunction with the lifting action of the lifting mechanism, the clamp is tightened more and more in the high-temperature working area of 100-1200℃ by utilizing the slab's own weight and friction, and finally the slab lifting is completed safely and efficiently.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A high-temperature environment clamping crane, characterized in that, include: Lifting mechanism, opening and closing mechanism, and clamps; The clamp is a scissor-type automatic clamp, and the clamp body is not equipped with an electric drive device or sensor components; the lifting mechanism and the opening and closing mechanism adopt a lifting and opening / closing linkage drive mechanism; the lifting and opening / closing linkage drive mechanism includes a lifting drum, an opening and closing drum, a lifting wire rope, an opening and closing wire rope, and a pulley block; the lifting wire rope is wound on the lifting drum; one end of the opening and closing wire rope is fixed to the lifting drum, and the other end passes around the pulley block and is fixed to the opening and closing drum; the pulley block includes a first lifting fixed pulley, a second lifting fixed pulley, an opening and closing fixed pulley, and an opening and closing movable pulley.
2. The high-temperature environment clamping crane according to claim 1, characterized in that, The lifting mechanism has an even multiplier, and the opening and closing mechanism has the same multiplier as the lifting mechanism.
3. A high-temperature environment clamping crane according to claim 1, characterized in that, On the hoisting drum, the winding diameter of the hoisting wire rope is the same as the winding diameter of the opening and closing wire rope, satisfying the following relationship: in, This refers to the bottom diameter of the hoisting drum where the hoisting wire rope is wound. The diameter of the lifting wire rope. This refers to the bottom diameter of the hoisting drum where the opening and closing wire rope is wound. The diameter of the opening and closing wire rope.
4. A high-temperature environment clamping crane according to claim 1, characterized in that, The operating logic of the lifting and closing linkage drive mechanism is as follows: When the hoisting drum rotates and the opening and closing drum is braked, the clamp and the load move up and down, and the movable pulley of the opening and closing mechanism moves up and down together with the clamp; When the hoisting drum is braked and the opening / closing drum is driven, the lifting beam of the clamp remains stationary, and the clamp legs open and close.
5. A high-temperature environment clamping crane according to claim 1, characterized in that, The clamp includes a lifting beam, an opening and closing beam, a first connecting rod, a second connecting rod, clamp legs, and a guide rod; the movable pulley of the lifting mechanism is fixed on the lifting beam; one end of the guide rod is connected to the opening and closing mechanism, and the other end is connected to the opening and closing beam.
6. A high-temperature environment clamping crane according to claim 5, characterized in that, The guide rod is a form in which the opening and closing mechanism is connected to the opening and closing beam, or it can be connected by a chain or wire rope.
7. A high-temperature environment clamping crane according to claim 1, characterized in that, The opening of the clamp and the distance between the clamp teeth and the lifting beam The real-time stroke of the guide rod controlled by the opening and closing mechanism First link The length of the jaw leg from the connection point between the first link and this jaw leg to the connection point between the second link and this jaw leg. The length from the point where the second link connects to the jaw leg, perpendicular to the jaw leg's end. The angle between the line segment from the connection point of the first link to this clamp leg to the connection point of the second link to this clamp leg and the line segment from the connection point of the second link to this clamp leg to the clamp tip of this clamp leg. The vertical distance from the hinge point between the first connecting rod and the lifting beam to the hinge point between the second connecting rod and the clamp leg. And the distance from the second link of each of the two jaws, perpendicular to the connection point of the jaws, to the jaw tip of the jaw. Analytical calculations show that: And before the clamps descend to the gripping height, ; in, The width of the slab. To reserve quantity, The unit of length is mm, and the unit of angle is radians; , for When the maximum opening is reached A The minimum value, for When the minimum opening is reached A The maximum value, , All of these are design parameters; .