Hoisting structure
By embedding a lifting ring sleeve in the mold insert and setting an acute-angled annular groove on its outer periphery, the problem of insufficient strength of the mold insert lifting structure is solved, and the integral molding of the insert during the casting stage is realized, reducing processing costs and time, and improving the safety and stability of the lifting structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 本田技研科技(中国)有限公司
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-29
AI Technical Summary
In existing mold inserts used in hoisting structures, due to the small thickness of the panel, the groove of the hoisting eyelet sleeve extends beyond the panel surface when using standard hoisting eyelets to form the hoisting structure. This affects the strength of the hoisting structure and poses safety issues such as damage to the hoisting eyelet sleeve or the casting itself. Furthermore, additional processing is required, increasing processing time and costs.
Design a hoisting structure in which a lifting ring is embedded in an insert. The outer periphery of the lifting ring has an annular groove that is recessed from the outside to the inside. The sidewall of the groove forms an acute angle with the horizontal plane. The structure is integrally formed through a casting stage to avoid subsequent processing and enhance the connection strength between the lifting ring and the insert.
This invention enables the integral molding of the inserts during the casting stage, saving processing time and costs, reducing the risk of vertical displacement of the lifting eye sleeve, improving the stability and safety of the lifting structure, and enhancing the connection strength between the lifting eye sleeve and the inserts.
Smart Images
Figure CN224298723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold hoisting technology, and in particular to a hoisting structure. Background Technology
[0002] Lifting structures are widely used for lifting, transporting, and connecting various mechanical equipment and structures, such as automobiles, ships, airplanes, and construction projects.
[0003] For molds, a standard threaded sleeve with a height of 55mm (hereinafter referred to as a standard lifting eye sleeve) is generally used to form the lifting structure. Specifically, the existing mold manufacturing process includes a foaming stage and a casting stage. In the foaming stage, the standard lifting eye sleeve is placed into a resin model with casting holes, and then the resin model is embedded in molding sand to form a casting mold. Molten iron is poured into the casting mold, causing the resin model to burn and disappear, replacing it with a casting mold. In this way, the lifting structure with casting holes and standard lifting eye sleeves can be integrally formed during casting without the need for additional processing.
[0004] However, because the inserts in the mold have relatively small panel thickness (generally less than or equal to 40mm), using standard lifting eyelets to form the lifting structure would cause the grooves of the lifting eyelets to extend beyond the panel surface, resulting in an incomplete effective working portion and affecting the strength of the lifting structure. This could lead to safety issues such as damage to the lifting eyelets or the casting itself during lifting. Therefore, the inserts cannot be cast as a single piece; instead, lifting holes must be machined separately on their surface after the molten iron is poured. This increases both the processing time and cost of the insert's lifting structure. Utility Model Content
[0005] The purpose of this utility model is to provide a lifting structure that can be integrally cast during the mold insert manufacturing stage, eliminating the need for subsequent processing, reducing mold manufacturing costs, increasing lifting efficiency and convenience, enhancing the strength of the lifting ring itself, and ensuring lifting safety.
[0006] To achieve the above objectives, this utility model provides a hoisting structure, characterized in that,
[0007] Including inlays and eyelet sleeves,
[0008] The lifting ring is fitted into the insert, and the lifting ring has a lifting hole.
[0009] An annular groove, recessed from the outside to the inside, is provided along the outer circumference of the lifting ring sleeve.
[0010] The annular groove includes a first sidewall and a second sidewall arranged opposite to each other, with the first sidewall forming a first angle with the horizontal plane and the second sidewall forming a second angle with the horizontal plane, respectively, forming acute angles.
[0011] By adopting the above structure, the insert can be integrally formed into the lifting structure during the mold casting stage, eliminating the need for post-processing of the lifting structure after the insert casting is completed, thus saving processing time and costs. Furthermore, embedding the lifting ring sleeve into the insert for integral casting reduces the risk of vertical displacement of the lifting ring sleeve, ensuring the stability of the lifting structure. Secondly, by setting annular grooves with acute angles between the first sidewall and the horizontal plane and the second sidewall and the horizontal plane, not only is the risk of insufficient strength in the lifting structure due to the reduced size of the lifting ring sleeve eliminated, but the strength of the connection between the lifting ring sleeve and the insert is also enhanced, ensuring safety during lifting.
[0012] Optionally, based on the above structure, let the height of the insert be T, the height of the ring sleeve be H, the opening width of the annular groove be B, the bottom width of the annular groove be A, the first included angle be θ1, and the second included angle be θ2, then the following condition (3) and at least one of the following conditions (1) to (2) need to be satisfied:
[0013] T≤H≤T+3 (1)
[0014] 5≤B≤T-6 (2)
[0015] A=B-(5tanθ1+5tanθ2) (3)
[0016] The units for T, H, B, and A are mm.
[0017] By adopting the above structure, the height H of the lifting eyelet sleeve, the opening width B of the annular groove, and the bottom width A of the annular groove are adjusted according to the height T of the insert. The values of A and B are used to determine the values of the first and second included angles, ensuring that the height of the lifting eyelet sleeve matches the height of the insert. Simultaneously, the width of the annular groove and the included angles are used to improve the strength of the connection structure between the insert and the lifting eyelet sleeve, ensuring lifting safety. Furthermore, the parameters of the annular groove can be flexibly adjusted according to the actual height of the insert and strength requirements, making this lifting structure adaptable to inserts of different heights, thus exhibiting high adaptability.
[0018] Optionally, based on the above structure, the range of the first included angle θ1 and / or the second included angle θ2 is 0° to 60°.
[0019] By adopting the above structure, the strength of the connection structure between the insert and the lifting ring can be further improved, ensuring the safety of lifting.
[0020] Optionally, based on the above structure, the first included angle θ1 and the second included angle θ2 may be the same or different.
[0021] By adopting the above structure, making the first included angle θ1 and the second included angle θ2 the same, the annular groove can be easily processed, reducing manufacturing difficulty and mass production costs. Furthermore, making the first included angle θ1 and the second included angle θ2 different allows for flexible adjustment of the parameters of the annular groove according to actual conditions and strength requirements, thus adjusting the strength of the lifting structure and improving adaptability.
[0022] Optionally, based on the above structure, the distance from the outer end of the first sidewall to the end face of the lifting ring sleeve near the first sidewall is greater than the distance from the outer end of the second sidewall to the end face of the lifting ring sleeve near the second sidewall.
[0023] By adopting the above structure, the annular groove can be positioned relatively close to the lower end of the lifting eyelet sleeve during lifting. This avoids the following situation: when threads are installed inside the lifting eyelet sleeve, the increased distance from the outer end of the annular groove to the lower end face causes the thread position to shift upwards, resulting in localized thinning and reduced strength of the lifting structure.
[0024] Optionally, based on the above structure, the first sidewall is located above the second sidewall.
[0025] By adopting the above structure, the annular groove can be positioned relatively close to the lower end of the lifting ring during lifting, ensuring the strength of the overall lifting structure.
[0026] Optionally, based on the above structure, the height of the lifting ring sleeve is 30mm~45mm.
[0027] By adopting the above structure, it can be adapted to small inserts with small height. It can be integrally formed with the insert during the casting stage, without the need for additional processing of the insert and additional machining of the internal threaded lifting hole. This can reduce processing costs, reduce mold manufacturing costs, and reduce working time.
[0028] Optionally, based on the above structure, the insert has a central hole, and the lifting ring is fitted into the central hole. Both the central hole and the lifting hole are through holes.
[0029] By adopting the above structure, the central hole and the lifting hole are open on both sides, and either side of the opening can be connected to the lifting ring, thereby enabling double-sided lifting without the need to flip the mold, thus increasing lifting efficiency and convenience.
[0030] Optionally, based on the above structure, a lifting ring is included, which can be connected to the lifting hole from either side of the lifting hole.
[0031] By adopting the above structure, double-sided lifting can be achieved without flipping the mold, thereby increasing lifting efficiency and convenience.
[0032] Optionally, based on the above structure, the outer surface of the lifting ring sleeve is provided with an anti-rotation structure to prevent the lifting ring sleeve from rotating relative to the insert.
[0033] By adopting the above structure, the lifting ring sleeve is embedded in the insert, which can prevent the lifting ring sleeve from rotating relative to the insert during hoisting and ensure the stability of the overall hoisting structure.
[0034] Optionally, based on the above structure, the insert and the ring sleeve are integrally formed by casting.
[0035] By adopting the above structure, the lifting ring is embedded in the insert during the casting stage, eliminating the need for additional processing of the insert and subsequent machining of the threaded lifting hole. This reduces processing costs, mold manufacturing costs, and labor time. Attached Figure Description
[0036] Figure 1 This is a sectional view showing the hoisting structure of this utility model.
[0037] Figure 2 The figures shown are an example of the lifting ring sleeve of the lifting structure of this utility model. (a) is a perspective view and (b) is a sectional view.
[0038] Figure 3 This is a perspective view showing another example of the lifting ring sleeve of the lifting structure of this utility model.
[0039] Figure 4 This is a schematic diagram illustrating the hoisting structure using this utility model.
[0040] Explanation of reference numerals in the attached figures
[0041] 1. Insert; 1a. Center hole; 2. Lifting ring sleeve; 2a. Lifting hole; 2b. Anti-rotation surface; 3. Annular groove; 3a. Upper side wall; 3b. Lower side wall; 4. Lifting ring; T. Height of insert 1; H. Height of lifting ring sleeve 2; B. Opening width of annular groove 3; A. Bottom width of annular groove 3; L1. First distance; L2. Second distance; θ1. First included angle; θ2. Second included angle. Detailed Implementation
[0042] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0043] For ease of explanation, the same reference numerals are used for corresponding parts in the various figures, and further explanations are omitted for repeated parts. In addition, in the following description, expressions such as "front," "rear," "left," "right," "up," "down," "inner," and "outer" are used to indicate orientation or position. These expressions are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0044] The hoisting structure of this utility model includes an insert and a hoisting ring sleeve. The hoisting ring sleeve is embedded in the insert and has a hoisting hole. An annular groove is provided along the outer circumferential surface of the hoisting ring sleeve, which is recessed from the outside to the inside. The annular groove includes a first sidewall and a second sidewall that are arranged opposite to each other. The first angle between the first sidewall and the horizontal plane and the second angle between the second sidewall and the horizontal plane are acute angles, respectively.
[0045] In a specific implementation, the first sidewall and the second sidewall can be the upper sidewall and the lower sidewall, respectively.
[0046] like Figure 1 and Figure 2 As shown, the lifting ring sleeve 2 is embedded in the insert 1. The lifting ring sleeve 2 has a lifting hole 2a and an annular groove 3 that is recessed from the outside to the inside along the outer circumferential surface of the lifting ring sleeve 2. The annular groove 3 includes an upper sidewall 3a and a lower sidewall 3b that are arranged opposite to each other. The upper sidewall 3a and the lower sidewall 3b are inclined relative to the horizontal plane, and the angle θ1 between the upper sidewall 3a and the horizontal plane and the angle θ2 between the lower sidewall 3b and the horizontal plane are acute angles, respectively.
[0047] Using the above structure, the lifting ring sleeve 2 can be pre-embedded before casting, and after casting, the lifting ring sleeve 2 and the insert 1 can be integrally cast. This eliminates the need for post-casting of the lifting structure after the insert 1 is cast, saving processing time and costs. Furthermore, embedding the lifting ring sleeve 2 into the insert 1 for integral casting reduces the risk of vertical displacement of the lifting ring sleeve 2, ensuring the stability of the lifting structure. Secondly, by setting annular grooves 3 with acute angles θ1 between the upper sidewall 3a and the horizontal plane and θ2 between the lower sidewall 3b and the horizontal plane, not only is the risk of insufficient strength in the lifting structure due to the small size of the lifting ring sleeve 2 eliminated, but the strength of the connection between the lifting ring sleeve 2 and the insert 1 is also enhanced, ensuring safety during lifting.
[0048] In this utility model, such as Figures 1-4 As shown, a central hole 1a is provided in the insert 1, and a lifting ring 2 is provided in the central hole 1a. A lifting hole 2a is provided in the lifting ring 2. Both the central hole 1a and the lifting hole 2a are through holes, and a thread is formed in the lifting hole 2a.
[0049] Thus, the central hole 1a and the lifting hole 2a have openings on both sides, allowing connection to the lifting structure from either side. The lifting structure can be a lifting ring. During lifting, it can... Figure 4 As shown, the lifting ring 4 can be inserted from both sides, enabling double-sided lifting without the need to flip the mold, thus increasing lifting efficiency and convenience.
[0050] In this invention, the parameters of the eyelet sleeve can be adjusted according to the height of the insert. Specifically, as shown... Figure 2 As shown, let the height of the insert 1 be T (mm), the height of the ring sleeve 2 be H (mm), the opening width of the annular groove 3 be B (mm), the bottom width of the annular groove 3 be A (mm), the angle between the upper sidewall 3a and the horizontal plane be θ1, and the angle between the lower sidewall 3b and the horizontal plane be θ2. Then, the following condition (3) and at least one of the following conditions (1) to (2) need to be satisfied:
[0051] T≤H≤T+3 (1)
[0052] 5≤B≤T-6 (2)
[0053] A=B-(5tanθ1+5tanθ2) (3)
[0054] In this way, the height H of the lifting ring sleeve 2, the opening width B of the annular groove 3, and the bottom width A of the annular groove 3 can be adjusted according to the height T of the insert 1. The values of A and B are used to determine the values of the included angles θ1 and θ2, ensuring that the height of the lifting ring sleeve matches the height of the insert. Simultaneously, the width of the annular groove and the included angles are used to improve the strength of the connection structure between the insert and the lifting ring sleeve, ensuring lifting safety. Furthermore, the parameters of the annular groove can be flexibly adjusted according to actual conditions and strength requirements, adapting to inserts of any height, thus offering high adaptability.
[0055] In this invention, the angle θ1 between the upper sidewall 3a and the horizontal plane and / or the angle θ2 between the lower sidewall 3b and the horizontal plane are preferably in the range of 0° to 60°. This further improves the strength of the connection structure between the insert and the lifting ring, ensuring the safety of lifting.
[0056] It should be noted that the angle θ1 between the upper sidewall 3a of the annular groove 3 and the horizontal plane and the angle θ2 between the lower sidewall 3b of the annular groove 3 and the horizontal plane can be the same or different. When the angles θ1 and θ2 are the same, the annular groove 3 can be easily manufactured, reducing manufacturing difficulty and mass production costs. Furthermore, when the angles θ1 and θ2 are different, the parameters of the annular groove can be flexibly adjusted according to actual conditions and strength requirements, thereby adjusting the strength of the lifting structure and improving adaptability.
[0057] See Figure 2In this utility model, the first distance L1 from the outer end of the upper sidewall 3a to the end face of the lifting ring sleeve 2 near the upper sidewall 3a is greater than the second distance L2 from the outer end of the lower sidewall 3b to the end face of the lifting ring sleeve 2 near the lower sidewall 3b.
[0058] By adopting the above structure, the annular groove 3 can be positioned relatively close to the lower end of the lifting eyelet sleeve 2 during lifting. This avoids the following situation: when threads are installed inside the lifting eyelet sleeve 2, the increased distance from the outer end of the annular groove 3 to the lower end face causes the thread position to shift upwards, resulting in local thinning and reducing the overall strength of the lifting structure.
[0059] In this utility model, the insert 1 and the hanging ring sleeve 2 are integrally formed by casting.
[0060] In this way, the lifting ring 2 is embedded in the insert 1 during the casting stage, eliminating the need for additional processing of the insert and subsequent machining of the internally threaded lifting hole. This reduces processing costs, mold manufacturing costs, and labor time.
[0061] In this utility model, the height of the lifting ring sleeve 2 is preferably 30mm~45mm.
[0062] In this way, it can be adapted to inserts with smaller heights, without the need for additional processing of inserts 1 and additional machining of internally threaded lifting holes, which can reduce processing costs, reduce mold manufacturing costs, and reduce working hours.
[0063] In this utility model, an anti-rotation structure is provided on the outer surface of the lifting ring sleeve 2 to prevent the lifting ring sleeve 2, which is embedded in the insert 1, from rotating relative to the insert 1. For example... Figure 3 As shown, in a specific embodiment, the anti-rotation structure can be the anti-rotation surface 2b, or it can be other structures that can achieve anti-rotation.
[0064] By setting the anti-rotation surface 2b, after the lifting ring sleeve 2 is embedded in the insert 1, it can prevent the lifting ring sleeve 2 from rotating relative to the insert 1 during hoisting, thus ensuring the stability of the overall hoisting structure.
[0065] As described above, in this invention, by forming an annular groove 3 on the outer surface of the lifting ring sleeve 2, which is concave from the outside in and has acute angles θ1 between the upper sidewall 3a and the horizontal plane and θ2 between the lower sidewall 3b and the horizontal plane, the strength of the connection structure between the lifting ring sleeve and the insert can be guaranteed through structural design, even when the size of the lifting ring sleeve 2 is reduced to fit the insert 1, thus ensuring the safety of lifting. Furthermore, embedding the lifting ring sleeve into the insert during the casting stage reduces the risk of vertical displacement of the lifting ring sleeve. In addition, by setting the specific shape and structure of the lifting ring sleeve as described above, the parameters of the annular groove can be flexibly adjusted according to the actual height and strength requirements of the insert. This lifting structure can adapt to inserts of different heights, exhibiting high adaptability.
[0066]
Example
[0067] The following examples further illustrate the technical solution of this utility model, but these examples are merely illustrative and should not be interpreted in a limiting way.
[0068] In these embodiments, the lifting structure includes an insert 1 and a lifting ring sleeve 2; the lifting ring sleeve 2 is embedded in the insert 1, and a lifting hole 2a is formed in the lifting ring sleeve 2, which is through the top and bottom, and a thread is formed in the lifting hole 2a; an annular groove 3 is provided along the outer peripheral surface of the lifting ring sleeve 2, which is recessed from the outside to the inside; the upper sidewall 3a of the annular groove 3 makes an angle θ1 with the horizontal plane, and the lower sidewall 3b makes an angle θ2 with the horizontal plane.
[0069] Table 1 shows the specific values of the height T (mm) of the insert 1, the height H (mm) of the hanging ring sleeve 2, the opening width B (mm) of the annular groove 3, the bottom width A (mm) of the annular groove 3, the angle θ1 between the upper sidewall 3a and the horizontal plane and the angle θ2 between the lower sidewall 3b and the horizontal plane in these embodiments 1 to 16.
[0070] For example, in embodiment 1, the height T of the insert 1 is 30 (mm), the height H of the ring sleeve 2 is 30 (mm), the opening width B of the annular groove 3 is 24 (mm), the bottom width A of the annular groove 3 is 12.1 (mm), and the angles θ1 between the upper sidewall 3a and the horizontal plane and θ2 between the lower sidewall 3b and the horizontal plane are both 50°, satisfying the following conditions (1)~(3):
[0071] T≤H≤T+3 (1)
[0072] 5≤B≤T-6 (2)
[0073] A=B-(5tanθ1+5tanθ2) (3).
[0074] In addition, in embodiment 1, the first distance L1 from the outer end of the upper sidewall 3a to the end face of the lifting ring sleeve 2 near the end of the upper sidewall 3a is 3.5mm, and the second distance L2 from the outer end of the lower sidewall 3b to the end face of the lifting ring sleeve 2 near the end of the lower sidewall 3b is 2.5mm, with L1 being greater than the value of L2.
[0075] Moreover, in Embodiment 1, the insert 1 and the ring sleeve 2 are integrally formed by casting.
[0076] Thus, in Embodiment 1, by providing an annular groove 3 recessed from the outside to the inside along the outer circumferential surface of the lifting eye sleeve 2, and by ensuring that the angle θ1 between the upper sidewall 3a and the horizontal plane and the angle θ2 between the lower sidewall 3b and the horizontal plane are both 50°, even when the size of the lifting eye sleeve 2 is reduced to fit the insert 1, the structural design can still guarantee the strength of the connection structure between the lifting eye sleeve and the insert, ensuring the safety of lifting. This allows the lifting eye sleeve 2 to be embedded into the insert 1 and integrally formed by casting, eliminating the need for additional processing of the insert 1 and subsequent machining of internal threads for lifting, thereby reducing processing costs, mold manufacturing costs, and labor time. Furthermore, by positioning the annular groove 3 relatively close to the lower end of the lifting eye sleeve 2 during lifting, i.e., making the first distance L1 greater than the second distance L2, the following situation can be avoided: when threads are provided inside the lifting eye sleeve 2, the increased distance from the outer end of the annular groove to the lower end face causes the thread position to shift upwards, resulting in local thinning and reduced overall strength.
[0077] It should be noted that in Embodiment 1, an anti-rotation surface is provided on the outer surface of the lifting ring sleeve 2 to prevent the lifting ring sleeve 2 embedded in the insert 1 from rotating relative to the insert 1. This prevents the lifting ring sleeve 2 from rotating relative to the insert 1 during hoisting, thus ensuring the stability of the overall hoisting structure.
[0078] Furthermore, when using the lifting structure of Embodiment 1, the lifting ring 4 can be connected from either side of the lifting hole 2a. In some embodiments, the lifting ring sleeve 2 may also be open on one side and connected to the lifting ring only on one side. There are no limitations on this.
[0079] In addition, it should be noted that, apart from the parameter values shown in Table 1, the other structures in Examples 2 to 16 are basically the same as those in Example 1, so they will not be described again.
[0080] Table 1
[0081]
[0082] As described above, the preferred embodiments of this utility model have been fully described with reference to the accompanying drawings, but various modifications or alterations will be apparent to those skilled in the art. It goes without saying that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A hoisting structure, characterized in that, Including inlays and eyelet sleeves, The lifting ring sleeve is fitted inside the insert, and the lifting ring sleeve is provided with a lifting hole. An annular groove, recessed from the outside to the inside, is provided along the outer circumferential surface of the lifting ring sleeve. The annular groove includes a first sidewall and a second sidewall disposed opposite to each other, wherein the first sidewall forms a first angle with the horizontal plane and the second sidewall forms a second angle with the horizontal plane, respectively.
2. The hoisting structure according to claim 1, characterized in that, Let the height of the insert be T, the height of the ring sleeve be H, the opening width of the annular groove be B, the bottom width of the annular groove be A, the first included angle be θ1, and the second included angle be θ2. Then, the following condition (3) and at least one of the following conditions (1) to (2) need to be satisfied: T≤H≤T+3 (1) 5≤B≤T-6 (2) A=B-(5tanθ1+5tanθ2) (3) The units for T, H, B, and A are mm.
3. The hoisting structure according to claim 2, characterized in that, The range of the first included angle θ1 and / or the second included angle θ2 is 0° to 60°.
4. The hoisting structure according to claim 2, characterized in that, The first included angle θ1 and the second included angle θ2 may be the same or different.
5. The hoisting structure according to any one of claims 1 to 4, characterized in that, The distance from the outer end of the first sidewall to the end face of the lifting ring sleeve near the first sidewall is greater than the distance from the outer end of the second sidewall to the end face of the lifting ring sleeve near the second sidewall.
6. The hoisting structure according to claim 5, characterized in that, The first sidewall is located above the second sidewall.
7. The hoisting structure according to any one of claims 1 to 4, characterized in that, The height of the lifting ring sleeve is 30mm~45mm.
8. The hoisting structure according to any one of claims 1 to 4, characterized in that, The insert has a central hole, and the lifting ring is fitted inside the central hole. Both the central hole and the lifting hole are through holes.
9. The hoisting structure according to claim 8, characterized in that, Includes a lifting ring, which can be connected to the lifting hole from either side of the lifting hole.
10. The hoisting structure according to any one of claims 1 to 4, characterized in that, The outer surface of the lifting ring sleeve is provided with an anti-rotation structure to prevent the lifting ring sleeve from rotating relative to the insert.
11. The hoisting structure according to any one of claims 1 to 4, characterized in that, The insert and the ring sleeve are integrally formed by casting.