Plug pulling rod for casting

Abstract

The utility model discloses a cork pulling rod for casting, which comprises a supporting mechanism, a chock plug, a locking mechanism and a plurality of refractory bricks, one end of the supporting mechanism is in threaded connection with the chock plug, and the other end of the supporting mechanism is in threaded connection with the locking mechanism; the refractory bricks are located between the chock plug and the locking mechanism and sequentially arranged on the supporting mechanism in a sleeving mode, and the refractory bricks are sequentially connected in a clamped mode. Therefore, plug sealing and resin sand filling are not needed, the operation time is effectively shortened, and the overall operation efficiency and the production safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a plug-pulling rod for casting. Background Art

[0002] In the casting process, a plug is usually pre-installed in the tapping hole of the pouring basin to ensure that the molten iron can flow into the cavity quickly and stably after reaching the predetermined position. However, with the increase in the weight of the casting and the extension of the pouring time, the traditional plug is unable to withstand the erosion of high-temperature molten iron for a long time and seems inadequate. To address this challenge, the casting industry has innovatively developed a new type of plug-pulling rod, which is designed specifically to resist the erosion of high-temperature molten iron for a long time.

[0003] However, the structure of the traditional plug-pulling rod, such as Figure 4 shown, usually connects an independent refractory plug at its end. The inside of the plug is designed as a circular hollow, and a rectangular hole is opened at the bottom to facilitate the insertion and connection of the assembly rod. Several refractory bricks are additionally stacked on the plug and connected in series through the assembly rod, and resin sand is filled between them for fixation. However, this design has obvious defects. Specifically, the open design at the bottom of the plug requires the use of refractory mud for sealing after assembly, which is both time-consuming and increases the complexity of the production preparation stage. In addition, relying on the filling and fixation method of resin sand, its stability is limited, which may cause the refractory bricks to loosen or shift during the pouring process, directly threatening the stability of the casting quality. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] For this purpose, the purpose of the utility model is to provide a plug-pulling rod for casting, which does not require plugging the plug and filling resin sand, effectively reduces the operation time, and improves the overall operation efficiency and production safety.

[0006] To achieve the above object, the utility model provides a plug-pulling rod for casting, including a support mechanism, a plug, a locking mechanism and a plurality of refractory bricks. One end of the support mechanism is threadedly connected to the plug, and the other end of the support mechanism is threadedly connected to the locking mechanism; the plurality of refractory bricks are located between the plug and the locking mechanism, and are sleeved on the support mechanism in sequence, and the plurality of refractory bricks are connected in a snap-fit manner in sequence.

[0007] The plug-pulling rod for casting of the utility model does not require plugging the plug and filling resin sand, effectively reduces the operation time, and improves the overall operation efficiency and production safety.

[0008] In addition, the plug-pulling rod for casting proposed according to the above application may also have the following additional technical features:

[0009] Specifically, the support mechanism includes a connecting rod, a first threaded rod, and a second threaded rod. One end of the connecting rod is connected to the first threaded rod, and the other end of the connecting rod is connected to the second threaded rod. A threaded hole is formed in the plug head, and the first threaded rod is threadedly connected to the threaded hole.

[0010] Specifically, the locking mechanism includes a self-locking nut and a gasket. The self-locking nut is threadedly connected to the second threaded rod. The gasket is sleeved on the second threaded rod, and the gasket is in contact connection with the refractory brick and the self-locking nut respectively.

[0011] Specifically, a convex block is provided at the top end of the refractory brick. A through hole penetrating the convex block is formed in the middle of the refractory brick. A card slot communicating with the through hole is formed at the bottom of the refractory brick, and the card slot is clamped with the convex block on another refractory brick.

[0012] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0013] The above-mentioned and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the following description of the embodiments in conjunction with the drawings, wherein:

[0014] Figure 1 is the front view of the plug pulling rod for casting according to an embodiment of the present utility model;

[0015] Figure 2 is the cross-sectional view of the plug pulling rod for casting according to an embodiment of the present utility model;

[0016] Figure 3 is the structural schematic diagram of the refractory brick according to an embodiment of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the plug pulling rod for casting in the prior art.

[0018] As shown in the figure: 10, support mechanism; 11, connecting rod; 12, first threaded rod; 13, second threaded rod; 20, plug head; 21, threaded hole; 30, locking mechanism; 31, self-locking nut; 32, gasket; 40, refractory brick; 41, convex block; 42, through hole; 43, card slot. Detailed Embodiments

[0019] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. On the contrary, the embodiments of the present utility model include all changes, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0020] The plug-pulling rod for casting according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0021] As Figures 1 - 3 shown, the plug-pulling rod for casting according to an embodiment of the present utility model may include a support mechanism 10, a plug head 20, a locking mechanism 30, and a plurality of refractory bricks 40.

[0022] One end of the support mechanism 10 is threadedly connected to the plug head 20, and the other end of the support mechanism 10 is threadedly connected to the locking mechanism 30.

[0023] The plurality of refractory bricks 40 are located between the plug head 20 and the locking mechanism 30, are sleeved on the support mechanism 10 in sequence, and are connected to each other by snap-fitting in sequence. For example, the plurality of refractory bricks 40 may be 5, 6, 7, 8, 9, 10, 11 refractory bricks 40, etc. The specific number used can be selected according to the actual situation (such as according to the requirements for plugging the pouring basin at different heights), and is not limited herein.

[0024] It should be noted that in order to strengthen the connection stability between the plug head 20 and the refractory bricks 40, the plug head 20 may be provided with a protrusion (not specifically marked in the figure) that engages with the card slot 43 of the refractory bricks 40.

[0025] To clearly illustrate the previous embodiment, in an embodiment of the present utility model, as Figure 2 shown, the support mechanism 10 may include a connecting rod 11, a first threaded rod 12, and a second threaded rod 13.

[0026] One end of the connecting rod 11 is connected to the first threaded rod 12, and the other end of the connecting rod 11 is connected to the second threaded rod 13. A threaded hole 21 is formed in the plug head 20, and the first threaded rod 12 is threadedly connected to the threaded hole 21.

[0027] It should be noted that the connection methods of the connecting rod 11 to the first threaded rod 12 and the second threaded rod 13 described in this embodiment may be threaded connection, welded connection, or integrally formed connection.

[0028] As a possible case, the support mechanism 10 described in this embodiment can be a fully threaded connecting rod. It can be understood that such a design can further meet the requirements for plugging gate basins of different heights.

[0029] Furthermore, in an embodiment of the present invention, as Figure 1 and Figure 2 shown, the locking mechanism 30 can include a self-locking nut 31 and a gasket 32. Among them, the self-locking nut 31 is threadedly connected to the second threaded rod 13.

[0030] The gasket 32 is sleeved on the second threaded rod 13, and the gasket 32 is in contact connection with the refractory brick 40 and the self-locking nut 31 respectively.

[0031] It can be understood that by arranging the gasket 32 between the refractory brick 40 and the self-locking nut 31, the contact area between the self-locking nut 31 and the refractory brick 40 can be increased, and the refractory brick 40 can be prevented from being damaged when the self-locking nut 31 locks multiple refractory bricks 40.

[0032] Furthermore, in an embodiment of the present invention, as Figure 3 shown, the top end of the refractory brick 40 is provided with a convex block 41, a through hole 42 penetrating the convex block 41 is opened in the middle of the refractory brick 40, and a card slot 43 communicating with the through hole 42 is opened at the bottom of the refractory brick 40. The card slot 43 is clamped with the convex block on another refractory brick.

[0033] It can be understood that when the refractory bricks 40 designed in this way are successively sleeved on the support mechanism 10, they can be successively clamped together, and thus multiple refractory bricks 40 connected in series can be made more firm.

[0034] Specifically, when it is necessary to place a plug in advance at the tapping hole position of the gate basin, the relevant staff first needs to thread one end of the first threaded rod 12 with the plug head 20, and then thread one end of the connecting rod 11 with the other end of the first threaded rod 12, and the other end of the connecting rod 11 is threadedly connected to the second threaded rod 13.

[0035] Then, the staff successively sleeved multiple refractory bricks 40 on the connecting rod 11, and made the lowermost refractory brick 40 clamped on the plug head 20, and multiple refractory bricks 40 sleeved on the connecting rod 11 were successively clamped.

[0036] Subsequently, the staff sleeved the gasket 32 on the second threaded rod 13, and screwed the self-locking nut 31 tightly on the second threaded rod 13. The tightened self-locking nut 31 presses on the refractory bricks 40 connected in series through the gasket 32, and presses and fixes the refractory bricks 40 on the plug head 20.

[0037] Finally, the staff plugs the assembled plug rod at the position of the tapping hole of the pouring basin.

[0038] In summary, for the plug rod for casting in the embodiment of the present utility model, there is no need for a plugging plug and filling resin sand, effectively reducing the operation time and improving the overall operation efficiency and production safety.

[0039] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A plug-pulling rod for casting, characterized in that, It includes a support mechanism, a plug, a locking mechanism and a plurality of refractory bricks. Among them, One end of the support mechanism is threadedly connected to the plug, and the other end of the support mechanism is threadedly connected to the locking mechanism; The plurality of refractory bricks are located between the plug and the locking mechanism, and are sequentially sleeved on the support mechanism, and the plurality of refractory bricks are sequentially snap-connected.

2. The plug-pulling rod for casting according to claim 1, characterized in that, The support mechanism includes a connecting rod, a first threaded rod and a second threaded rod. Among them, One end of the connecting rod is connected to the first threaded rod, and the other end of the connecting rod is connected to the second threaded rod; A threaded hole is formed in the plug, and the first threaded rod is threadedly connected to the threaded hole.

3. The plug-pulling rod for casting according to claim 2, characterized in that, The locking mechanism includes a self-locking nut and a gasket. Among them, The self-locking nut is threadedly connected to the second threaded rod; The gasket is sleeved on the second threaded rod, and the gasket is respectively in contact with the refractory brick and the self-locking nut.

4. The plug-pulling rod for casting according to claim 1, characterized in that, A convex block is provided at the top of the refractory brick, a through hole penetrating the convex block is formed in the middle of the refractory brick, a card slot communicating with the through hole is formed at the bottom of the refractory brick, and the card slot is snap-connected to the convex block on another refractory brick.

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