An automatic turnover sand box

Abstract

The utility model provides a kind of automatic overturning sand box, belong to sand box technical field. Including box, two connecting shafts and two overturning auxiliary shafts, connecting shaft is symmetrically set in the both sides of box, the axis of connecting shaft is located on the barycentric plane of box overturning direction;Two overturning auxiliary shafts are symmetrically set in the both sides of box, and respectively located in the side of corresponding connecting shaft;When the hoisting component of hoisting equipment acts on overturning auxiliary shaft and is lifted, box can be driven to overturn automatically around the axis of connecting shaft, until box is vertical state.The utility model can solve the problem that manual overturning sand box is high in labor intensity and high in operating risk.

Description

Technical Field

[0001] This utility model belongs to the field of sand box technology, and more specifically, it relates to an automatic flipping sand box. Background Technology

[0002] In the casting production industry, sand molds are key tooling equipment used for molding and pouring. After completing molding, handling, and assembly processes, sand molds often need to be flipped, for example, to clean the sand mold, inspect the cavity, or perform specific processing. Sand mold flipping is a crucial and frequently performed step in the entire production process.

[0003] Currently, the industry standard for flipping sand boxes involves using existing hoisting equipment (such as overhead cranes) in conjunction with manual labor. The specific procedure is typically as follows: First, operators use the overhead crane hook to lift the sand box horizontally using lifting devices (such as chains or slings); then, one or more operators work together to manually push the sand box, rotating it around the axis of the connecting shaft on the box body until the desired flipping angle is achieved. However, this manual flipping method presents several significant problems and safety hazards: First, sand boxes are usually made of heavy metal, making them large and heavy. Manually pushing such a heavy object to flip requires a large amount of manpower, resulting in extremely high labor intensity, time-consuming and labor-intensive operations, and severely impacting production efficiency. Second, the center of gravity of a square sand box constantly shifts during flipping, making it extremely difficult to maintain stability and balance. Once instability and tipping occur during pushing, its enormous weight and inertia make it impossible for operators to right or prevent it manually.

[0004] Therefore, in the casting production site, there is an urgent need for an automatic sand box turning solution that is relatively simple in structure, cost-controllable, easy to operate, safe and reliable, and can effectively replace manual turning, so as to improve production efficiency, ensure the safety of personnel and equipment, and reduce maintenance costs. Utility Model Content

[0005] The purpose of this invention is to provide an automatic sand box flipping system to solve the problems of high labor intensity and high operational risks associated with manual sand box flipping in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An automatic tilting sand box is provided, comprising a box body, two connecting shafts, and two tilting auxiliary shafts. The connecting shafts are symmetrically arranged on both sides of the box body, and the axis of the connecting shafts is located on the center plane of gravity in the tilting direction of the box body. The two tilting auxiliary shafts are symmetrically arranged on both sides of the box body and are respectively located on one side of the corresponding connecting shaft. When the lifting component of the lifting equipment acts on the tilting auxiliary shafts and lifts them, it can drive the box body to automatically tilt around the axis of the connecting shafts until the box body is in a vertical state.

[0007] In one possible implementation, combining the above technical solutions, the flipping auxiliary shaft is located above and to the side of the connecting shaft on the same side.

[0008] In one possible implementation, based on the above technical solutions, a sleeve is fitted onto the connecting shaft, and first retaining rings are provided at both ends of the sleeve, with a stop bar provided on the outer circumference of each first retaining ring.

[0009] In one possible implementation, based on the above technical solutions, a through hole is formed at the position corresponding to the flipping auxiliary shaft in the housing. The flipping auxiliary shaft is detachably installed in the through hole. One end of the flipping auxiliary shaft passes through the through hole and is provided with an annular groove. A second retaining ring is fitted inside the annular groove. A third retaining ring is provided at the other end of the flipping auxiliary shaft. The outer diameter of the flipping auxiliary shaft and the outer diameter of the second retaining ring are equal to the diameter of the through hole, and the inner diameter of the second retaining ring is larger than the outer diameter of the annular groove.

[0010] In one possible implementation, based on the above technical solutions, the width of the annular groove is greater than the thickness of the second retaining ring.

[0011] In one possible implementation, based on the above technical solutions, the second retaining ring has a conical structure, with the smaller diameter end of the second retaining ring facing the through hole, and a disassembly hole provided on its upper surface.

[0012] In one possible implementation, based on the above technical solutions, the sleeve is made of wear-resistant engineering plastic.

[0013] In one possible implementation, based on the above technical solutions, the lifting component includes two hooks, two chains, and two fixed pulleys, with a fixed pulley connected below each hook; the chain is wound around the fixed pulley, the connecting shaft, and the tilting auxiliary shaft. When the hook is lifted, the chain links the connecting shaft and the tilting auxiliary shaft, causing the box to tilt around the axis of the connecting shaft.

[0014] The advantages of this automatic sand box tilting mechanism are as follows: Compared with existing technologies, by setting a tilting auxiliary shaft and a connecting shaft on both sides of the box, and utilizing the lifting force of the lifting equipment, when the lifting component acts on the tilting auxiliary shaft, the sand box automatically tilts around the axis of the connecting shaft thanks to the structural design of the connecting shaft being located in the center plane of the tilting direction of the box. This replaces the manual tilting of the sand box, increasing the safety of the equipment. The "lifting and automatic tilting" achieved through structural linkage significantly shortens the tilting operation time and improves the efficiency of sand box turnover and process connection (such as cleaning sand molds and inspecting cavities) in casting production. Furthermore, this invention only requires adding a tilting auxiliary shaft to the existing box, without complex modifications, resulting in low cost, easy on-site implementation, and a simple and reliable structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an automatic tilting sand box provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of an automatic flipping sand box provided in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram showing the positional structure of the flipping auxiliary shaft, the first retaining ring, the second retaining ring, and the second retaining ring provided in Embodiment 3 of this utility model. The labels for the attached figures are as follows: 10. Housing; 11. Connecting shaft; 12. Tilting auxiliary shaft; 13. Sleeve; 14. First retaining ring; 15. Second retaining ring; 16. Third retaining ring; 17. Stop bar; 18. Annular groove; 19. Disassembly hole; 20. Lifting components; 21. Hooks; 22. Chains; 23. Fixed pulleys. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0019] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0021] For ease of description, spatial relative terms such as "above," "over," "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 "above" 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, and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0023] The present invention will now describe an automatic tilting sand box. Example 1:

[0024] like Figure 1As shown, the first embodiment of this utility model provides an automatic tilting sand box, including a box body 10, two connecting shafts 11, and two auxiliary shafts. The connecting shafts 11 are symmetrically arranged on both sides of the box body 10, and the axis of the connecting shafts 11 is located on the center plane of gravity of the box body 10 in the tilting direction. The two auxiliary shafts are symmetrically arranged on both sides of the box body 10, and are respectively located on one side of the corresponding connecting shaft 11. When the lifting component 20 of the lifting equipment acts on the auxiliary shaft and lifts it, it can drive the box body 10 to automatically tilt around the axis of the connecting shaft 11 until the box body 10 is in a vertical state. The auxiliary shaft is located above and to the side of the connecting shaft 11 on the same side.

[0025] The housing 10 adopts a rectangular metal frame structure. Two connecting shafts 11 are welded to the center of the two side walls of the housing 10. The axes of the two connecting shafts 11 are strictly aligned and located on the center plane of gravity in the width direction of the housing 10, ensuring balance during horizontal hoisting of the sand box. A tilting auxiliary shaft 12 is welded to the side of each connecting shaft 11. The tilting auxiliary shaft 12 is arranged parallel to the connecting shaft 11, specifically located above and to the side of the connecting shaft 11, facilitating the tilting of the housing 10. When the hoisting component 20 of the lifting equipment lifts upward, it applies an upward-sloping pulling force to the tilting auxiliary shaft 12. Since the auxiliary shaft is located on one side of the connecting shaft 11, this pulling force generates a tilting torque around the axis of the connecting shaft 11, thereby driving the housing 10 to automatically tilt around the axis of the connecting shaft 11 from a horizontal position. As the lifting height increases, the housing 10 gradually tilts to a vertical position. At this point, the axes of the auxiliary shaft and the connecting shaft 11 remain parallel in the vertical direction, completing the automatic tilting process. By designing the spatial positions of the auxiliary shaft and the connecting shaft 11, the sand box can be automatically flipped using the lifting force, eliminating the need for manual pushing and solving the problems of high labor intensity and instability associated with traditional manual flipping.

[0026] Compared with existing technologies, by setting up a collaborative structure of a flipping auxiliary shaft 12 and a connecting shaft 11 on both sides of the housing 10, and utilizing the lifting force of the lifting equipment, when the lifting component 20 acts on the flipping auxiliary shaft 12, the sand box automatically flips around the axis of the connecting shaft 11 by means of the structural design of the connecting shaft 11 being located in the center plane of the flipping direction of the housing 10. This replaces the manual action of flipping the sand box and increases the safety of the equipment. The "lifting and automatic flipping" is achieved through structural linkage, which greatly shortens the flipping operation time and improves the efficiency of sand box turnover and process connection (such as cleaning sand molds and inspecting cavities) in casting production. In addition, this utility model only requires the addition of the flipping auxiliary shaft 12 to the existing housing 10, without complex modifications, is low in cost, easy to implement on site, and has a simple and reliable structure.

[0027] Example 2:

[0028] like Figure 2 and Figure 3As shown, a sleeve 13 is fitted onto the connecting shaft 11. First retaining rings 14 are provided at both ends of the sleeve 13, and a stop bar 17 is provided on the outer circumference of each first retaining ring 14. A through hole is opened at the position corresponding to the auxiliary shaft in the housing 10. The auxiliary shaft is detachably installed in the through hole. One end of the auxiliary shaft passes through the through hole and has an annular groove 18. A second retaining ring 15 is fitted inside the annular groove 18, and a third retaining ring 16 is provided at the other end of the auxiliary shaft. The outer diameter of the auxiliary shaft and the outer diameter of the second retaining ring 15 are equal to the diameter of the through hole, and the inner diameter of the second retaining ring 15 is larger than the outer diameter of the annular groove 18. The width of the annular groove 18 is greater than the thickness of the second retaining ring 15. The second retaining ring 15 has a conical structure, with its smaller diameter end facing the through hole, and a disassembly hole 19 is provided on its upper surface. The sleeve 13 is made of wear-resistant engineering plastic.

[0029] The sleeve 13 fitted onto the connecting shaft 11 is made of wear-resistant engineering plastic (such as polytetrafluoroethylene), and its inner diameter is interference-fitted with the outer diameter of the connecting shaft 11 to ensure a secure fit of the sleeve 13. Two first retaining rings 14 are provided at both ends of the sleeve 13. The first retaining rings 14 and the sleeve 13 are integrally formed. Multiple stop bars 17 are provided on the opposite side of the two first retaining rings 14 and are evenly distributed along the outer side of the circumference of the first retaining rings 14. The stop bars 17 are cylindrical and staggered to form a ring-shaped protective structure to limit the lateral displacement of the chain 22.

[0030] A through hole is provided at a corresponding position on the side wall of the housing 10. The flipping auxiliary shaft 12 is a metal round shaft, and the diameter of the through hole is equal to the diameter of the flipping auxiliary shaft 12. An annular groove 18 is machined on the exposed shaft section after one end of the flipping auxiliary shaft 12 passes through the through hole. A second retaining ring 15 is fitted onto the annular groove 18. The second retaining ring 15 preferably has a conical structure, with its inner diameter larger than the outer diameter of the annular groove 18, and its smaller diameter end facing the through hole to facilitate the passage of the second retaining ring 15 through the through hole. The outer diameter of the second retaining ring 15 is equal to the diameter of the flipping auxiliary shaft 12. During installation, the flipping auxiliary shaft 12 is inserted into the through hole, and the second retaining ring 15 falls into the annular groove 18 under the action of gravity. Because the width of the annular groove 18 is greater than the thickness of the second retaining ring 15, the second retaining ring 15 can be stably locked in the annular groove 18. At this time, the outer diameter of the second retaining ring 15 is equal to the diameter of the through hole, thereby locking the flipping auxiliary shaft 12. A third retaining ring 16 is provided at the other end of the flipping auxiliary shaft 12 to prevent axial movement.

[0031] During disassembly, a tool is inserted into the disassembly hole 19 on the upper surface of the second retaining ring 15, and pulled upwards to make the second retaining ring 15 coaxial with the flipping auxiliary shaft 12, facilitating quick disassembly of the flipping auxiliary shaft 12. The wear-resistant engineering plastic sleeve 13 reduces wear on the chain 22, and the stop bar 17 cooperates with the second retaining ring 15 to prevent the chain 22 from falling off. The detachable flipping auxiliary shaft 12 structure facilitates maintenance and replacement, improving the practicality and reliability of the sand box flipping device.

[0032] like Figure 2 As shown, the lifting component 20 includes two hooks 21, two chains 22 and two fixed pulleys 23. Each hook 21 is connected to a fixed pulley 23. The chains 22 are wound around the fixed pulleys 23, the connecting shaft 11 and the auxiliary shaft. When the hooks 21 are lifted, the chains 22 link the connecting shaft 11 and the auxiliary shaft, causing the box body 10 to rotate around the axis of the connecting shaft 11.

[0033] The two hooks 21 of the lifting component 20 are made of forged carbon steel. A fixed pulley 23 is suspended below each hook 21. The chain 22 passes over the fixed pulley 23, the outer circumference of the sleeve 13 on the connecting shaft 11, and the outer circumference of the auxiliary shaft. When the crane hook is lifted upward, the chain 22 applies tension to the sleeve 13 of the connecting shaft 11 and the tilting auxiliary shaft 12 simultaneously. Since the tilting auxiliary shaft 12 is located above and to the side of the connecting shaft 11, the tension of the chain 22 on the tilting auxiliary shaft 12 forms a tilting torque around the axis of the connecting shaft 11, driving the box 10 to begin tilting. As the lifting height increases, the chain 22 remains taut during the tilting process of the box 10, continuously providing effective tilting force through the steering action of the fixed pulley 23 until the box 10 tilts to a vertical position. At this time, the contact point between the chain 22, the connecting shaft 11, and the auxiliary shaft forms a stable triangular force structure, ensuring that the sand box remains balanced in the vertical position. The lifting component 20, through the coordinated action of the fixed pulley 23 and the chain 22, converts the vertical lifting force of the crane into the turning torque of the sand box, realizing an automated turning process, avoiding manual intervention, and improving operational safety and efficiency.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0035] 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 exemplary embodiments according to this application. 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.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. 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.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0038] 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 exemplary embodiments according to this application. 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.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. 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.

Claims

1. An automatic tilting sand box, comprising a box body (10) and two connecting shafts (11), the connecting shafts (11) being symmetrically arranged on both sides of the box body (10), the axis of the connecting shafts (11) being located on the center plane of gravity in the tilting direction of the box body (10); characterized in that, include: Two flipping auxiliary shafts (12) are symmetrically arranged on both sides of the box (10) and are respectively located on one side of the corresponding connecting shaft (11); When the lifting component (20) of the lifting equipment acts on the flipping auxiliary shaft (12) and lifts it, it can drive the box (10) to automatically flip around the axis of the connecting shaft (11) until the box (10) is in a vertical state.

2. The automatic tilting sand box as described in claim 1, characterized in that: The flipping auxiliary shaft (12) is located above the connecting shaft (11) on the same side.

3. An automatic tilting sand box as described in claim 1 or 2, characterized in that: A sleeve (13) is fitted on the connecting shaft (11), and a first retaining ring (14) is provided at both ends of the sleeve (13). A retaining rod (17) is provided on the outer circumferential direction of each first retaining ring (14).

4. An automatic tilting sand box as described in claim 3, characterized in that, A through hole is opened on the housing (10) at the position corresponding to the flipping auxiliary shaft (12). The flipping auxiliary shaft (12) is detachably installed in the through hole. One end of the flipping auxiliary shaft (12) passes through the through hole and is provided with an annular groove (18). A second retaining ring (15) is sleeved in the annular groove (18). A third retaining ring (16) is provided at the other end of the flipping auxiliary shaft (12). The outer diameter of the flipping auxiliary shaft (12) and the outer diameter of the second retaining ring (15) are equal to the diameter of the through hole. The inner diameter of the second retaining ring (15) is larger than the outer diameter of the annular groove (18).

5. An automatic tilting sand box as described in claim 4, characterized in that: The width of the annular groove (18) is greater than the thickness of the second retaining ring (15).

6. An automatic tilting sand box as described in claim 4, characterized in that: The second retaining ring (15) has a conical structure. The small diameter end of the second retaining ring (15) faces the through hole, and a disassembly hole (19) is provided on its upper surface.

7. An automatic tilting sand box as described in claim 3, characterized in that: The sleeve (13) is made of wear-resistant engineering plastic.

8. An automatic tilting sand box as described in claim 1, characterized in that: The lifting component (20) includes two hooks (21), two chains (22) and two fixed pulleys (23), with one fixed pulley (23) connected below each hook (21); the chain (22) is wound around the fixed pulley (23), the connecting shaft (11) and the flipping auxiliary shaft (12). When the hook (21) is lifted, the chain (22) links the connecting shaft (11) and the flipping auxiliary shaft (12) to make the box (10) flip around the axis of the connecting shaft (11).

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