Core bar
By designing the structure of annular spaced connecting ribs and reinforcement ribs in the core bone, the problems of insufficient strength of mud core and poor gas discharge in the existing technology are solved, the overall strength and production efficiency of ring products are improved, and the use of steel is reduced , and facilitate subsequent operations.
Patent Information
- Application Number
- CN202420276359.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-02-05
AI Technical Summary
During the casting of ring products, the existing core bone design cannot effectively improve the overall strength of the mud core, resulting in easy cracking after baking, and pores and seepage defects caused by poor gas discharge, affecting product quality.
Design a core bone, including the main core and the connecting reinforcement. The main core is composed of connecting ribs distributed between an annular space. The connecting ribs are connected to each other to form an annular cavity, and reinforcement ribs are provided in the cavity. The connecting reinforcement member includes vertical Reinforcement ring in the direction is used to fix the connecting ribs and reinforcement ribs, increasing the strength of the core bone and gas discharge capacity.
By increasing the bonding of resin sand and the support of reinforcement ribs, the overall strength of the mud core is improved, the use of inner sand boxes is reduced, gas discharge is promoted, steel usage is reduced, boxing is improved, and the working efficiency is facilitated, and the mud core is facilitated. Transport and model selection.
Smart Images
Figure CN222344138U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of casting, and particularly relates to a core bone. Background Art
[0002] When producing ring products, in order to reduce the internal stress of the ring, it is necessary to ensure the cooling speed, which is generally controlled by increasing the sand intake of the ring. When adding resin sand of the same wall thickness, the consumption added to the inside is less than that added to the outside. Therefore, the inside of the ring product has a larger sand intake, and the sand box on the inside is less stressed. Due to the presence of the steel plate sand box, the carbon monoxide, carbon dioxide and other gases generated by the high temperature during the pouring process cannot be discharged smoothly, and will be blown back into the liquid casting, forming defects such as pores and seepage; and the existing core bone design cannot effectively improve the overall strength of the mud core, and cracks will appear after being baked by molten iron, which poses a serious hidden danger to product quality. Utility Model Content
[0003] The utility model aims to solve the above problems in the prior art and proposes a core bone which can effectively improve the overall strength of the mud core and facilitate the exhaust of gas.
[0004] The purpose of the utility model can be achieved through the following technical solutions: a core bone, including a main core and a connecting reinforcement member, the main core includes a plurality of connecting ribs distributed in an annular manner, each of the connecting ribs is connected end to end to form an annular cavity, and a reinforcement rib is fixedly arranged in the cavity, the connecting reinforcement member includes a plurality of reinforcement rings arranged in the vertical direction, the reinforcement rings are all located in the main core and fixed to the main core, in the horizontal direction, the inner side of the connecting rib is fixed to the reinforcement ring, and the outer side of the connecting rib extends outward.
[0005] In the above-mentioned core bone, there are a plurality of reinforcing ribs, and at least one reinforcing ring is correspondingly arranged at each reinforcing rib.
[0006] In the above-mentioned core bar, in the vertical direction, the number of the reinforcement rings located at the reinforcement ribs gradually increases downward.
[0007] In the above-mentioned core bone, the number of the reinforcing ribs is three, and the three reinforcing ribs are arranged in the vertical direction. A reinforcing ring is correspondingly arranged at the reinforcing ribs in the top layer, two reinforcing rings are correspondingly arranged at the reinforcing ribs in the middle layer, and three reinforcing rings are correspondingly arranged at the reinforcing ribs in the bottom layer.
[0008] In the above-mentioned core bone, a reinforcement ring is arranged on the lower side of the reinforcement ribs in the uppermost layer, a reinforcement ring is arranged on the upper and lower sides of the reinforcement ribs in the middle layer, a reinforcement ring is arranged on the upper side of the reinforcement ribs in the lowermost layer, and two reinforcement rings are arranged on the lower side.
[0009] In the above-mentioned core bar, a reinforcing ring is also fixedly provided at the horizontal bend located on the connecting rib.
[0010] In the above-mentioned core bar, in the vertical direction, the area size of the reinforcement ring gradually decreases upwards.
[0011] In the above-mentioned core bone, the inner bottom of the connecting rib is provided with an arc-shaped transition angle extending outward.
[0012] In the above-mentioned core bone, the connecting ribs and the reinforcing ring are fixed by welding.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] (1) Each connecting rib is connected end to end to form an annular cavity, and resin sand can be filled in the cavity to increase the bonding degree between the core bone and the resin sand, thereby improving the overall strength of the mud core; at the same time, reinforcing ribs are arranged at the cavity to prevent the main core from deforming, and on the other hand, to prevent the resin sand from being deformed by the pressure of molten iron, thereby increasing the overall strength of the core bone, eliminating the use of the inner sand box, facilitating exhaust, reducing the use of steel materials, and improving the efficiency of box making;
[0015] (2) The internal reinforcement rings can be used for climbing and connected with the hooks to facilitate the transportation of the ring mud cores;
[0016] (3) In the vertical direction, the area size of the reinforcement ring gradually decreases upward, following the shape of the product, which is convenient for subsequent core molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0018] Figure 2 It is a schematic diagram of the structure of the connecting rib;
[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.
[0020] In the figure, the main core 100; the connecting rib 101; the reinforcing rib 102; the reinforcing ring 103; the horizontal bending part 104; and the arc-shaped transition angle 105. DETAILED DESCRIPTION
[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0023] like Figure 1-Figure 3 As shown, a core bone includes a main core 100 and a connecting reinforcement member, the main core 100 includes a plurality of connecting ribs 101 distributed in an annular manner, each connecting rib 101 is connected end to end to form an annular cavity, and a reinforcement rib 102 is fixedly arranged in the cavity, the connecting reinforcement member includes a plurality of reinforcement rings 103 arranged in the vertical direction, the reinforcement rings 103 are all located in the main core 100 and fixed to the main core 100, in the horizontal direction, the inner side of the connecting rib 101 is fixed to the reinforcement ring 103, and the outer side of the connecting rib 101 extends outward.
[0024] In the present embodiment, each connecting rib 101 is connected end to end to form an annular cavity, and resin sand can be filled in the cavity to increase the bonding degree between the core bone and the resin sand and improve the overall strength of the mud core; at the same time, reinforcing ribs 102 are arranged in the cavity to prevent the main core 100 from deforming. On the other hand, it can also prevent the resin sand from being deformed by the pressure of molten iron and the main core 100, thereby increasing the overall strength of the core bone and eliminating the use of the inner sand box, which is convenient for exhaust while reducing the use of steel and improving the work efficiency of box making; and the reinforcing rings 103 located inside can all be used as hanging climbs and connected to the hooks to facilitate the transportation of ring-type mud cores.
[0025] It is worth mentioning that the shape and structural function of this core bone can be used in the middle large mud core of the wind turbine hub casting, which increases the versatility and improves the utilization rate of this core bone.
[0026] Further preferably, there are a plurality of reinforcing ribs 102 , and at least one reinforcing ring 103 is correspondingly provided at each reinforcing rib 102 to increase the overall strength of the core bone.
[0027] Further preferably, in the vertical direction, the number of the reinforcement rings 103 located at the reinforcement ribs 102 gradually increases downward.
[0028] Specifically, there are three reinforcing ribs 102, which are arranged in a vertical direction, and a reinforcing ring 103 is correspondingly arranged at the reinforcing rib 102 on the top layer, two reinforcing rings 103 are correspondingly arranged at the reinforcing rib 102 on the middle layer, and three reinforcing rings 103 are correspondingly arranged at the reinforcing rib 102 on the bottom layer.
[0029] In this embodiment, in order to ensure the strength of the connecting ribs 101, three reinforcing ribs 102 are arranged in the cavity to support the connecting ribs 101. Since the core bone in the lower layer is under greater pressure, the number of reinforcing rings 103 at the reinforcing ribs 102 increases from top to bottom.
[0030] Specifically, a reinforcement ring 103 is provided on the lower side of the reinforcement rib 102 in the uppermost layer, a reinforcement ring 103 is provided on the upper and lower sides of the reinforcement rib 102 in the middle layer, a reinforcement ring 103 is provided on the upper side of the reinforcement rib 102 in the lowermost layer, and two reinforcement rings 103 are provided on the lower side. The middle reinforcement ring 103 among the three reinforcement rings 103 at the reinforcement rib 102 in the lowermost layer can be used to share stress and improve the service strength of the core bone.
[0031] Further preferably, a reinforcing ring 103 is also fixedly provided at the horizontal bend 104 on the connecting rib 101, so as to strengthen the stress points on the core bone in a targeted manner and improve the strength of the core bone, and the reinforcing rib 102 on the connecting rib 101 is arranged close to the middle position of the cavity, and the reinforcing ring 103 corresponding to the reinforcing rib 102 can support and strengthen the middle position of the connecting rib 101, and the horizontal bend 104 is located at the top and bottom positions of the connecting rib 101, so as to support and strengthen the ends of the connecting rib 101 and ensure the overall strength of the main core 100.
[0032] Further preferably, in the vertical direction, the area size of the reinforcement ring 103 gradually decreases upwards, following the shape of the product, so as to facilitate subsequent core molding.
[0033] Further preferably, the inner bottom of the connecting rib 101 is provided with an arc-shaped transition angle 105 extending outward, also to facilitate the subsequent demoulding operation.
[0034] Specifically, the main core 100 and the reinforcement ring 103 are fixed by welding, and threaded steel bars of the same size are used between the main core 100 and the reinforcement ring 103, so as to facilitate the molding operation of the main core 100 and the reinforcement ring 103.
[0035] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0036] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A core bone, characterized in that: It includes a main core and a connecting reinforcement member, the main core includes a plurality of connecting ribs distributed in an annular manner, each of the connecting ribs is connected end to end to form an annular cavity, and a reinforcement rib is fixedly arranged in the cavity, the connecting reinforcement member includes a plurality of reinforcement rings arranged in the vertical direction, the reinforcement rings are all located in the main core and fixed to the main core, in the horizontal direction, the inner side of the connecting rib is fixed to the reinforcement ring, and the outer side of the connecting rib extends outward.
2. A core bone according to claim 1, characterized in that: There are a plurality of reinforcing ribs, and at least one reinforcing ring is correspondingly arranged at each reinforcing rib.
3. A core bone according to claim 2, characterized in that: In the vertical direction, the number of reinforcement rings located at the reinforcement ribs gradually increases downwards.
4. A core bone according to claim 3, characterized in that: The number of the reinforcing ribs is three, and the three reinforcing ribs are arranged in a vertical direction. A reinforcing ring is correspondingly arranged at the reinforcing ribs on the top layer, two reinforcing rings are correspondingly arranged at the reinforcing ribs on the middle layer, and three reinforcing rings are correspondingly arranged at the reinforcing ribs on the bottom layer.
5. A core bone according to claim 4, characterized in that: A reinforcing ring is arranged on the lower side of the reinforcing ribs in the uppermost layer, a reinforcing ring is arranged on both the upper and lower sides of the reinforcing ribs in the middle layer, a reinforcing ring is arranged on the upper side of the reinforcing ribs in the lowermost layer, and two reinforcing rings are arranged on the lower side.
6. A core bone according to claim 1, characterized in that: A reinforcement ring is also fixedly arranged at the horizontal bend on the connecting rib.
7. A core bone according to claim 1, characterized in that: In the vertical direction, the area size of the reinforcement ring gradually decreases upwards.
8. A core bone according to claim 1, characterized in that: The inner bottom of the connecting rib is provided with an arc-shaped transition angle extending outward.
9. A core bone according to claim 1, characterized in that: The connecting rib and the reinforcing ring are fixed by welding.