Sand mold structure of traction machine base

Abstract

The traction machine base sand mold structure comprises an upper sand box, the upper sand box is provided with a first cavity for containing molding sand, and the top of the upper sand box is provided with a plurality of first mounting holes communicated with the bottom of the upper sand box; the lower sand box is provided with a second cavity for accommodating the molding sand, and one end of the lower sand box is provided with a plurality of second mounting holes; the guide rod is assembled in the first mounting hole, the lower end of the guide rod is inserted into the second mounting hole, and the guide rod is provided with a buffer component for buffering the upper sand box; according to the utility model, the sand box slowly descends through the buffer component in the sand box reassembly process, and potential safety hazards caused by direct hand loosening or non-synchronous hand loosening of two persons are prevented.

Description

Technical Field

[0001] This utility model relates to the field of sand mold structures, and more particularly to sand mold structures for traction machine bases. Background Technology

[0002] Sand casting is a common method in the casting process. It involves placing a casting mold into a sand box, filling it with molding sand, and then removing the casting mold before casting.

[0003] Chinese public document CN201320577573.1 discloses an integrated traction machine base and its sand mold structure. The sand mold structure includes an upper sand box and a lower sand box containing molding sand, a cavity with the same size and shape as the traction machine base located at the interface of the upper and lower sand boxes, a first sand core placed in the cavity to form the inner cavity of the third bushing, a second sand core placed in the cavity to form a through hole, an inner gating system connected to the cavity and located in the upper sand box for introducing molten iron into the cavity, a horizontal gating system connected to the inner gating system and located in the upper sand box, a straight gating system connected to the horizontal gating system for pouring molten iron, and an air vent connected to the cavity for expelling air from the cavity.

[0004] However, before casting, the upper sand box is assembled above the lower sand box using guide rods. During this process, if the casting model to be cast is large, multiple people are needed to lift the sand box during assembly. After the upper sand box enters the guide rod, it must be lowered slowly. Otherwise, releasing it directly will damage the lower sand box, or if one person releases it first and the other does not release it in time, it will be difficult for the two to synchronize.

[0005] Therefore, the applicant requests further improvements. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a sand mold structure for the traction machine base. This utility model solves the problem of the sand box slowly descending during the reassembly process by using a buffer component, thus preventing safety hazards caused by direct release or asynchronous release by two people.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] Traction machine base sand mold structure, including

[0009] The upper sand box has a first cavity for accommodating molding sand, and the top of the upper sand box has several first mounting holes communicating with the bottom.

[0010] The lower sand box is provided with a second cavity for accommodating the molding sand, and one end of the lower sand box is provided with a plurality of second mounting holes;

[0011] A guide rod is fitted into the first mounting hole, and its lower end is inserted into the second mounting hole. The guide rod is fitted with a buffer component for cushioning the upper sand box.

[0012] In the above technical solution, preferably, when the guide rod rotates, the buffer component rotates accordingly, the buffer component is placed in the first mounting hole, and when the guide rod is pulled, the buffer component moves in the pulling direction of the guide rod.

[0013] In the above technical solution, preferably, the buffer component is square in shape.

[0014] In the above technical solution, preferably, the first mounting hole is square in shape to fit the buffer component.

[0015] In the above technical solution, preferably, when the guide rod is not rotated, one side of the buffer component is in contact with the lower sand box and the other side is in contact with the upper sand box, and there is a gap between the upper sand box and the lower sand box.

[0016] In the above technical solution, preferably, the diameter of the buffer component is larger than the diameter of the second mounting hole.

[0017] In the above technical solution, preferably, the center point of the second mounting hole is aligned with the center point of the first mounting hole.

[0018] In the above technical solution, preferably, the diameter of the guide rod is equal to the diameter of the second mounting hole.

[0019] In the above technical solution, preferably, the upper sand box is provided with symmetrically arranged first handles at both ends.

[0020] In the above technical solution, preferably, the lower sand box is provided with symmetrically arranged second handles at both ends, and when the upper sand box is placed above the lower sand box, the first handle and the second handle are longitudinally aligned.

[0021] The beneficial effects of this utility model are: by adding a buffer component, the upper sand box can be lowered slowly during the assembly of the upper and lower sand boxes, preventing safety hazards caused by immediate slippage or difficulty in synchronization between two people during the assembly process. Furthermore, through the cooperation between the guide rod and the buffer component, after the sand box is assembled, the guide rod and the buffer component can be removed together by rotating the guide rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the sand box of this utility model.

[0023] Figure 2 This is a schematic diagram of the lower sand box of this utility model.

[0024] Figure 3 This is a schematic diagram of the guide rod of this utility model.

[0025] Figure 4 This is an assembly diagram of the present invention.

[0026] Figure 5 This is a schematic diagram of the present invention.

[0027] Figure 6 for Figure 4 Enlarged view of point A.

[0028] Figure 7 for Figure 5 Enlarged view of point B.

[0029] Figure 8 This is a schematic diagram of the cavity of this utility model.

[0030] 1. Upper sand box; 11. First mounting hole; 12. First handle; 13. First cavity; 2. Lower sand box; 21. Second mounting hole; 22. Second handle; 23. Second cavity; 3. Guide rod; 31. Buffer component; 4. Cavity. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0032] like Figures 1-8 As shown, the traction machine base sand mold structure includes an upper sand box 1, a lower sand box 2, a guide rod 3, and a buffer component 31.

[0033] In this embodiment, both the upper sand box 1 and the lower sand box 2 are provided with a first cavity 13 and a second cavity 23 for accommodating molding sand. The area of ​​molding sand that can be accommodated by the first cavity 13 is equal to the area of ​​molding sand that can be accommodated by the second cavity 23, and the length and width of the first cavity 13 are equal to the length and width of the second cavity 23.

[0034] Furthermore, the length and width of the upper sand box 1 are the same as the length and width of the lower sand box 2.

[0035] The guide rod 3 is used to assist in the connection, and a buffer component 31 is fixedly mounted on the guide rod 3.

[0036] Furthermore, the top of the upper sand box 1 is provided with a number of first mounting holes 11 that communicate with the bottom, and one end of the lower sand box 2 is provided with a number of arranged second mounting holes 21, the center point of the second mounting hole 21 being aligned with the center point of the first mounting hole 11.

[0037] The upper sand box 1 is also provided with a first handle 12 at both ends for easy lifting and application of force. The lower sand box 2 is provided with a second handle 22 at both ends, which is the same as that of the upper sand box 1. The second handle 22 is also used for easy lifting and application of force. When the upper sand box 1 is placed above the lower sand box 2, the first handle 12 and the second handle 22 are aligned longitudinally.

[0038] In the existing casting process, after the upper sand box 1 and the lower sand box 2 are filled with compacted molding sand, the upper sand box 1 needs to be assembled on top of the lower sand box 2. One side of the upper sand box 1 is equipped with a guide rod 3, and one side of the lower sand box 2 is provided with an installation hole that matches the guide rod 3. The assembly between the upper sand box 1 and the lower sand box 2 is completed by aligning the guide rod 3 with the installation hole.

[0039] Unlike existing casting processes, after the upper sand box 1 and lower sand box 2 are filled with compacted molding sand, the guide rod 3 is placed in the second mounting hole 21 provided in the lower sand box 2. Since the second mounting hole 21 has a certain depth, the guide rod 3 placed in the second mounting hole 21 will not easily fall off or fall out for other reasons. The buffer component 31 provided on the guide rod 3 is in contact with the second mounting hole 21, and the diameter of the buffer component 31 is larger than the diameter of the second mounting hole 21.

[0040] The guide rod 3 has a certain length. When the upper sand box 1 is lifted, it can be observed from the first mounting hole 11 whether the guide rod 3 is aligned with the first mounting hole 11. Moreover, the diameter of the first mounting hole 11 is larger than the diameter of the guide rod 3, so the upper sand box 1 can be quickly assembled above the lower sand box 2. At this time, the buffer component 31 is still in contact with one side of the upper sand box 1, and there is a certain gap between the upper sand box 1 and the lower sand box 2.

[0041] Furthermore, during the assembly process, the buffer component 3, since it comes into contact with the upper sand box 1 and the lower sand box 2 respectively, enables the upper sand box 1 to descend slowly, preventing damage to the lower sand box 2 caused by the upper sand box 1 after being released. In addition, during the descent, it shares some of the force used by the operator to lift the upper sand box 1, making it easier, and also prevents safety hazards caused by the operator not being synchronized on both sides.

[0042] After assembly, when the guide rod 3 is rotated, the buffer component 31 rotates together, and then the buffer component 31 is adapted to its first mounting hole 11, and the upper sand box 1 and the lower sand box 2 come into contact.

[0043] Furthermore, when the guide rod 3 is pulled, the buffer component 31 moves in the direction of pulling the guide rod 3.

[0044] Specifically, the buffer component 31 is square in shape, and the first mounting hole 11 is square in shape to fit the buffer component 31, especially the square shape of the buffer component 31 after it rotates with the guide rod 3.

[0045] In this embodiment, after the upper sand box 1 and the lower sand box 2 are assembled, the interior of the upper sand box 1 is a cavity 4 for casting. The cavity structure inside the cavity 4 is the same size as the traction machine base. A pouring port is provided on one side of the cavity structure, and several venting holes are provided above the cavity structure.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sand-cast structure for a traction machine base, characterized in that: include The upper sand box (1) is provided with a first cavity (13) for accommodating molding sand, and the top of the upper sand box (1) is provided with a plurality of first mounting holes (11) communicating with the bottom. The lower sand box (2) is provided with a second cavity (23) for accommodating the molding sand, and one end of the lower sand box (2) is provided with a plurality of second mounting holes (21). The guide rod (3) is fitted into the first mounting hole (11), and its lower end is inserted into the second mounting hole (21). The guide rod (3) is fitted with a buffer component (31) for buffering the upper sand box (1).

2. The sand mold structure for the traction machine base according to claim 1, characterized in that: When the guide rod (3) rotates, the buffer component (31) rotates accordingly. The buffer component (31) is placed in the first mounting hole (11). When the guide rod (3) is pulled, the buffer component (31) moves in the direction of the pull of the guide rod (3).

3. The sand mold structure for the traction machine base according to claim 2, characterized in that: The buffer component (31) is square in shape.

4. The sand mold structure for the traction machine base according to claim 3, characterized in that: The first mounting hole (11) is square in shape to fit the buffer component (31).

5. The sand mold structure for the traction machine base according to claim 2, characterized in that: When the guide rod (3) is not rotated, one side of the buffer component (31) is in contact with the lower sand box (2), and the other side is in contact with the upper sand box (1), and there is a gap between the upper sand box (1) and the lower sand box (2).

6. The sand mold structure for the traction machine base according to claim 5, characterized in that: The diameter of the buffer component (31) is larger than the diameter of the second mounting hole (21).

7. The sand mold structure for the traction machine base according to claim 6, characterized in that: The center point of the second mounting hole (21) is aligned with the center point of the first mounting hole (11).

8. The sand mold structure for the traction machine base according to claim 7, characterized in that: The diameter of the guide rod (3) is equal to the diameter of the second mounting hole (21).

9. The sand mold structure for the traction machine base according to claim 1, characterized in that: The upper sand box (1) is provided with symmetrically arranged first handles (12) at both ends.

10. The sand mold structure for the traction machine base according to claim 9, characterized in that: The lower sand box (2) is provided with symmetrically arranged second handles (22) at both ends. When the upper sand box (1) is placed above the lower sand box (2), the first handle (12) and the second handle (22) are longitudinally aligned.

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