CN217858678U

CN217858678U - Anti-fracture large sand core skeleton structure

Info

Publication number: CN217858678U
Application number: CN202221690295.6U
Authority: CN
Inventors: 于文鹏; 张龙涛; 张金佳; 蔺依林
Original assignee: Shandong Juzhou Metal Material Co ltd
Current assignee: Shandong Juzhou Metal Material Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-22
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a large-scale psammitolite core bone structure of preventing splitting, include the core bone main part that sets up along psammitolite length direction, the lateral part of core bone main part arranges a plurality of second grade core bones that match with the psammitolite shape, the top of core bone main part is provided with two at least hoisting points, any hoisting point department corresponds to be connected with the lifting rope that the top extends to outside the psammitolite, the top of any lifting rope is provided with the lifting hook of the crane of being convenient for handling, the lifting rope overcoat is equipped with prevents that the lifting rope from contacting the psammitolite and causing the pipe of preventing splitting of psammitolite; in the sand core manufacturing process, the lifting rope is isolated from the surface of the molding sand by adopting the anti-fracture circular tube, so that the lifting rope is prevented from being contacted with the sand core, and the cracking and the fracture of the sand core caused by the stress of tightly contacting the sand core with the iron wire during lifting are avoided; the core rod structure is simple to manufacture and low in cost, only the core rod is required to be arranged in the center of the sand core, the core rod is taken out after casting and sand cleaning, and the core rod can be reused by replacing a new iron wire.

Description

Anti-fracture large sand core skeleton structure

Technical Field

The utility model relates to a sand mould core bone field especially relates to a psammitolite core bone structure of large casting cavity.

Background

In the sand core molding process, the sand core is generally a solid whole, and the embedded steel bars are used as core bars for carrying out strength support on the sand mold. For large castings, especially large castings with an inner cavity structure, the volume of the sand core is usually large, and more core bars are required to be matched and used as strength supports.

However, the core rod with complex design is usually difficult to manufacture, high in cost and poor in reusability, and the simple core rod often cannot play a role in reinforcement; particularly, in the manufacturing and lifting processes, the lifting rope is often in direct contact with the sand core, and in the lifting process, the sand core is tightly contacted with the lifting rope, so that the stress of the lifting rope during lifting is easy to cause sand core cracks and fractures.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a make simple, with low costs, but reuse and can avoid causing the cracked large-scale psammitolite core bone structure of preventing splitting of psammitolite when lifting by crane is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: prevent large-scale psammitolite core bone structure of fracture includes the core bone main part that sets up along psammitolite length direction, the lateral part of core bone main part has been arranged a plurality of second grade core bones that match with the psammitolite shape, the top of core bone main part is provided with two at least hoisting points, arbitrary hoisting point department correspondence is connected with the top and extends to the outer lifting rope of psammitolite, arbitrary the top of lifting rope is provided with the lifting hook of the crane handling of being convenient for, the lifting rope overcoat is equipped with and prevents the lifting rope contact psammitolite causes the cracked pipe of preventing fracture of psammitolite.

Preferably, the secondary core is connected to both sides of the core body.

Preferably, the secondary core is rigidly connected with the core main body.

Preferably, the side of the secondary core rod is connected with a plurality of tertiary core rods.

As a preferable technical scheme, the lifting rope is an iron wire rope.

By adopting the technical scheme, the anti-fracture large sand core frame structure comprises a frame main body arranged along the length direction of the sand core, wherein a plurality of secondary frames matched with the shape of the sand core are arranged on the side part of the frame main body, at least two hoisting points are arranged at the top end of the frame main body, a hoisting rope with the top end extending out of the sand core is correspondingly connected to any one of the hoisting points, a lifting hook convenient for hoisting by a crane is arranged at the top end of any one of the hoisting ropes, and an anti-fracture circular tube for preventing the hoisting rope from contacting the sand core to cause fracture of the sand core is sleeved outside the hoisting rope;

the beneficial effects of the utility model are that: in the sand core manufacturing process, the lifting rope is isolated from the surface of the molding sand by the anti-fracture circular tube, so that the lifting rope is prevented from contacting the sand core, and the sand core is prevented from cracking and breaking due to the stress of tightly contacting the sand core with an iron wire during lifting; the lifting force for lifting the lifting rope is completely acted on the core body, the gravity center point is clear in position, demolding and lifting are stable, inclination is not easy to occur, and the quality of the sand core is guaranteed; the core bar structure uniformly bears the quality of the sand core through the core bar main body, so that uneven stress of each part of the sand core is avoided; the core rod structure is simple to manufacture and low in cost, only the core rod is required to be arranged in the center of the sand core, the core rod is taken out after casting and sand cleaning, and the core rod can be reused by replacing a new iron wire.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.

FIG. 1 is a front sectional view of an embodiment of the present invention;

FIG. 2 is a top cross-sectional view of an embodiment of the present invention;

FIG. 3 is a side sectional view of an embodiment of the invention;

FIG. 4 is a front sectional view of the mold closing chamber according to the embodiment of the present invention;

in the figure: 1-a core body; 2-secondary mandril; 3-lifting a rope; 4-a hook; 5-anti-fracture circular tube; 6-sand core.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 to 3, the fracture-preventing large sand core frame structure comprises a frame main body 1 arranged along the length direction of a sand core 6, a plurality of secondary frames 2 matched with the shape of the sand core 6 are arranged on the side portion of the frame main body 1, at least two hoisting points are arranged on the top end of the frame main body 1, two hoisting points are arranged according to the weight distribution of the sand core 6 in the embodiment, any hoisting point is correspondingly connected with a hoisting rope 3 with the top end extending to the outside of the sand core 6, a hoisting hook 4 convenient for hoisting and conveying a crane is arranged on the top end of any hoisting rope 3, and a fracture-preventing circular tube 5 for preventing the hoisting rope 3 from contacting the sand core 6 to cause fracture of the sand core 6 is sleeved outside the hoisting rope 3.

The core body 1 and the secondary core 2 can be arranged in a bending mode according to the shape of the sand core 6, so that the core body 1, the secondary core 2 and the sand core 6 are matched in shape as much as possible, and the weight of the sand core 6 is borne as much as possible. Meanwhile, the length and the setting position of each secondary core 2 are set according to the specific shape of the sand core 6, in this embodiment, the secondary cores 2 are connected to two sides of the core body 1 to ensure that the secondary cores are in contact with the sand core 6 as much as possible, and if necessary, the side portions of the secondary cores 2 are connected to a plurality of tertiary cores to ensure that the weight of the sand core 6 is borne as much as possible. Whether the core bone is of a solid structure is selected according to the size and the length of the sand core 6, when the size is light, the hollow core bone can meet requirements, the hollow core bone is selected as much as possible, the overall weight is heavier when the lifting is avoided, and when the hollow core bone cannot meet the requirements, the solid core bone is selected for ensuring the strength of the core bone.

The secondary core rod 2 is rigidly connected with the core rod main body 1, and can be connected in a welding mode, so that the connection stability between the secondary core rod and the core rod main body is ensured.

The lifting rope 3 is an iron wire rope, and the lifting hook 4 is directly made of the iron wire rope by bending. The iron wire rope is adopted as the lifting rope 3, the rigidity is good, the steel wire rope cannot be broken, in addition, the swinging amplitude of the steel wire rope is small, and the sand core 6 cannot be cracked or broken due to the fact that the steel wire rope is in contact with the sand core 6 in the lifting process.

The working principle of the embodiment is as follows:

in the manufacturing process of the sand core 6, firstly, the core bone structure is placed at a proper position in a die cavity of the sand core 6, then one end of the lifting rope 3 is connected to a lifting point of the core bone main body 1, then a circular pipe is sleeved outside the lifting rope 3, the bottom end of the fracture-preventing circular pipe 5 is abutted against the top end of the core bone main body 1, then molding sand is filled, in the process of filling the molding sand, the position of the fracture-preventing circular pipe 5 is properly adjusted, so that the lifting rope 3 is positioned at the center of the fracture-preventing circular pipe 5, the molding sand is hardened after filling, the fracture-preventing circular pipe 5 is taken out after hardening, the other end of the lifting rope 3 is made into the lifting hook 4, then the lifting rope 3 is lifted by a crane, and the sand core 6 is lifted from the die;

after the sand core 6 is hoisted and placed, the hanging rope 3 which leaks outwards is cut short to enable the top end of the hanging rope 3 to be located below the surface of moulding sand, then the space around the hanging rope 3 is filled with the moulding sand, the surface of the sand core 6 is filled, the filled sand core 6 is shown in figure 4, and finally the sand core 6 is painted and dried to be poured in a box.

In the sand core manufacturing process, the lifting rope 3 is isolated from the surface of the molding sand by the anti-fracture circular tube 5, so that the lifting rope is prevented from contacting the sand core, and the sand core is prevented from cracking and breaking due to the stress of tightly contacting the sand core with an iron wire during lifting; the lifting force for lifting the lifting rope 3 is completely acted on the core body 1, the gravity center point is clear in position, demolding and lifting are stable, inclination is not easy to occur, and the quality of the sand core is guaranteed; the core frame structure uniformly bears the quality of the sand core through the core frame main body 1, and uneven stress of each part of the sand core cannot be caused; the core rod structure is simple to manufacture and low in cost, only the core rod is required to be arranged in the center of the sand core, the core rod is taken out after casting and sand cleaning, and the core rod can be reused by replacing a new iron wire.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Prevent large-scale psammitolite core bone structure of fracture, its characterized in that: including the dabber main part that sets up along psammitolite length direction, the lateral part of dabber main part has been arranged a plurality of second grade dabbers that match with the psammitolite shape, the top of dabber main part is provided with two at least hoist and mount points, arbitrary hoist and mount point department corresponds and is connected with the lifting rope that the top extends to the psammitolite outside, arbitrary the top of lifting rope is provided with the lifting hook of the handling of being convenient for driving a vehicle, the lifting rope overcoat is equipped with and prevents the lifting rope contact psammitolite causes the cracked pipe of preventing splitting of psammitolite.

2. The fracture-resistant large sand core skeleton structure of claim 1, wherein: the secondary core bars are connected to two sides of the core bar main body.

3. The fracture-resistant large sand core skeleton structure of claim 1, wherein: the secondary core is rigidly connected with the core main body.

4. The fracture-preventing large sand core skeleton structure of claim 1, wherein: the lateral part of the second-level core is connected with a plurality of third-level cores.

5. The fracture-resistant large sand core skeleton structure of any one of claims 1 to 4, wherein: the lifting rope is a wire rope.