Large die casting threaded hole connecting piece structure

Abstract

The invention discloses a large die casting threaded hole connecting piece structure and particularly relates to the technical field of threaded hole connecting pieces, threaded holes are formed in the edge of a die casting, connecting pieces are connected to the outer walls of the threaded holes, and each connecting piece comprises an arc-shaped connecting strip, a first connecting plate and a second connecting plate. First limiting holes are formed in the outer wall of the side, away from the second connecting plate, of the first connecting plate in an arrayed mode, inclined strips are welded to the inner walls of the middles of the first limiting holes, and inclined vertex angles are connected to the tops of the inclined strips. After the bolt is connected, the first connecting plate and the second connecting plate are driven by resilience force of the arc-shaped connecting strip to jack up the end of the bolt, so that the bolt is always in a tightened state, and loosening rotation caused by loosening of the bolt is avoided; and meanwhile, when the bolt is loosened, the inclined vertex angle bounces upwards to apply counteractive resistance to rotation of the bolt in the reverse direction, so that the bolt is difficult to loosen and rotate in the reverse direction, and the stability of the bolt and the connecting piece is improved.

Description

Technical Field

[0001] The present application relates to the technical field of threaded hole connectors, and more specifically, to a threaded hole connector structure for a large die casting. Background Art

[0002] Die casting threaded hole connectors refer to components that are machined to form threaded holes during the die casting process or after the die casting is manufactured. These connectors are usually used to connect two or more die castings, or to connect die castings with other non-die casting materials.

[0003] After searching, the existing patent (publication number: CN108150496A) discloses a threaded connector, which includes a rotating shaft, and the two ends of the rotating shaft are rotatably connected with a first connector and a second connector, and a threaded rod is arranged between the first connector and the second connector, and the threaded rod includes a connecting portion rotatably connected to the fashionable rotating shaft and a threaded portion connected to the fashionable connecting portion, and the threaded portion is provided with threads. The threaded connector described in the present application can connect mechanical parts and enable the mechanical parts to rotate in one direction, and the connection method is simple and firm, and will not fall off. In the process of realizing this application, the inventor found that the prior art has the following problems:

[0004] The effective length of the threaded hole of the existing die casting may be insufficient. When the effective length is insufficient, the threaded connection may become loose or slip during use, especially in a vibration environment, which will seriously affect the reliability of the connection. At the same time, the vibration generated by the operation of the equipment can easily cause relative movement of the bolt connection, thereby causing looseness. When the bolt hole and the bolt are small, it is easy to make the connection difficult to position and cause displacement, thus affecting the connection effect.

[0005] Therefore, a large die casting threaded hole connector structure is proposed to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present application provides a large-scale die-casting threaded hole connector structure to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a large die-casting threaded hole connector structure, comprising a die-casting, wherein threaded holes are arranged at the edge of the die-casting, and a connector is connected to the outer wall of the threaded hole, and the connector comprises an arc-shaped connecting strip, a No. 1 connecting plate and a No. 2 connecting plate, wherein one end of the arc-shaped connecting strip is welded with the No. 1 connecting plate, and the end of the arc-shaped connecting strip away from the No. 1 connecting plate is welded with the No. 2 connecting plate, a No. 1 through hole is arranged in the middle of the No. 1 connecting plate, and a No. 2 through hole is arranged in the middle of the No. 2 connecting plate, wherein the No. 1 through hole and the No. 2 through hole are on the same axis, and the No. 1 through hole and the No. 2 through hole are also on the same axis as the threaded hole;

[0008] Among them, a No. 1 limiting hole is arranged on the outer wall of one side of the No. 1 connecting plate away from the No. 2 connecting plate, and multiple groups of No. 1 limiting holes are welded with inclined strips on the middle inner walls. One end of the inclined strip away from the inner wall of the No. 1 limiting hole extends to the outside of the No. 1 limiting hole and is connected with an inclined top angle, and multiple groups of the inclined strips are arranged in a clockwise direction.

[0009] Preferably, a gasket is provided on the top of the No. 1 connecting plate, and a No. 2 limiting hole is arranged on the top of the gasket, and the No. 2 limiting hole matches the No. 1 limiting hole.

[0010] Preferably, the inner walls of multiple groups of the No. 2 limiting holes are welded with No. 2 inclined strips, and one end of the No. 2 inclined strip away from the inner wall of the No. 2 limiting hole extends to the outside of the No. 2 limiting hole and is connected with a No. 2 inclined top angle, and the multiple groups of the No. 2 inclined strips are arranged in a clockwise direction.

[0011] Preferably, a No. 1 magnetic sheet is provided on the bottom inner wall of the No. 1 limiting hole and the No. 2 limiting hole, and limiting blocks are arranged at the bottom of the gasket, and a plurality of groups of the limiting blocks are matched with the No. 1 limiting hole.

[0012] Preferably, the outer walls of the plurality of groups of the limit blocks are arranged with strip grooves, the strip grooves match the inclined strips, the bottom of the limit block is connected to a second magnetic sheet, and the first magnetic sheet attracts the second magnetic sheet.

[0013] Preferably, elastic reinforcing ribs are welded to the inner wall of the arc-shaped connecting strip, and fixing protrusions are provided on the outer walls on the opposite sides of the No. 1 connecting plate and the No. 2 connecting plate, and the fixing protrusions are made of rubber.

[0014] Preferably, a movable groove is arranged inside the No. 1 connecting plate, and the movable groove is connected to the No. 1 through hole. A push rod is embedded in the inner wall of the movable groove, one end of the push rod is connected to a spring, one end of the spring away from the push rod abuts against the inner wall of the movable groove, and one end of the push rod away from the spring passes through the movable groove and is connected to a ball.

[0015] Preferably, the interior of the No. 2 connecting plate is arranged with No. 2 movable grooves, the No. 2 movable grooves are connected with the No. 2 through holes, the inner walls of one side of multiple groups of the No. 2 movable grooves are connected with rotating shafts, and the outer wall of the rotating shaft is movably sleeved with a movable rod.

[0016] Preferably, a No. 2 spring is connected to the outer wall of one side of the middle part of the movable rod, and the end of the No. 2 spring away from the movable rod abuts against the inner wall of the No. 2 movable groove. The end of the movable rod away from the rotating shaft is connected to a tip portion, and multiple groups of movable rods are arranged in a clockwise inclined direction.

[0017] Technical effects and advantages of this application:

[0018] 1. Compared with the prior art, this large die-cast threaded hole connector structure, after the bolt is connected, drives the No. 1 connecting plate and the No. 2 connecting plate to lift the end of the bolt through the resilience of the arc-shaped connecting strip, so that the bolt is always in a tightened state to prevent the bolt from loosening and rotating. When the bolt loosens and rotates in the opposite direction, the end of the inclined top angle bounces upward to apply a reaction resistance to the opposite rotation of the bolt, making it more difficult for the bolt to loosen and rotate in the opposite direction, thereby increasing the stability of the bolt and the connector.

[0019] 2. Compared with the prior art, this large die-cast threaded hole connector structure can connect a gasket to the top of the No. 1 connecting plate when the effective length of the internal threaded hole of the die-casting is insufficient. The corresponding number of gaskets can be added according to the effective length required for the required threaded hole, thereby avoiding loosening or slipping during the connection between the threaded hole with insufficient effective length and the bolt.

[0020] 3. Compared with the prior art, this large die-cast threaded hole connector structure is compressed and shrinks and rebounds when connected with threaded holes of different diameters by the spring, so that the ball at the end of the push rod is always in abutment with the bolt, so that the No. 1 through hole and the No. 2 through hole are always at the same center of the circle as the bolt, avoiding the displacement of the connector during the rotation of the nut, thereby affecting the connection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a three-dimensional structural diagram of the connector of this application;

[0023] Figure 3 This is a schematic diagram of the connector and gasket structure for this application;

[0024] Figure 4 This is a schematic diagram of the top view structure of the gasket of this application;

[0025] Figure 5This is a schematic diagram of the top view of the structure of the No. 1 connecting plate of the present application;

[0026] Figure 6 This is a schematic diagram of the top view of the second connecting plate of the present application.

[0027] The accompanying drawings are marked as follows: 1. die casting; 2. threaded hole; 3. connecting piece; 4. arc-shaped connecting strip; 5. connecting plate No. 1; 6. connecting plate No. 2; 7. through hole No. 1; 8. through hole No. 2; 9. limiting hole No. 1; 10. tilting strip; 11. tilting top angle; 12. gasket; 13. limiting hole No. 2; 14. tilting strip No. 2; 141. tilting top angle No. 2; 15. magnetic sheet No. 1; 16. limiting block; 17. strip groove; 18. magnetic sheet No. 2; 19. elastic reinforcing rib; 20. fixing protrusion; 21. movable groove; 22. push rod; 23. spring; 24. ball; 25. movable groove No. 2; 26. rotating shaft; 27. movable rod; 28. spring No. 2; 29. ​​tip. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Example 1

[0030] As attached Figures 1 to 5A large die-casting threaded hole connector structure shown in the figure comprises a die-casting 1, threaded holes 2 are arranged at the edge of the die-casting 1, a connector 3 is connected to the outer wall of the threaded hole 2, the connector 3 comprises an arc-shaped connecting strip 4, a No. 1 connecting plate 5 and a No. 2 connecting plate 6, one end of the arc-shaped connecting strip 4 is welded with the No. 1 connecting plate 5, the end of the arc-shaped connecting strip 4 away from the No. 1 connecting plate 5 is welded with the No. 2 connecting plate 6, a No. 1 through hole 7 is arranged in the middle of the No. 1 connecting plate 5, a No. 2 through hole 8 is arranged in the middle of the No. 2 connecting plate 6, the No. 1 through hole 7 and the No. 2 through hole 8 are on the same axis, and the No. 1 through hole 7 and the No. 2 through hole 8 are also on the same axis as the threaded hole 2, and the No. 1 through hole 7 and the No. 2 through hole 8 are also on the same axis as the threaded hole 2. The inner wall of the No. 1 through hole 8 is provided with a thread for easy connection with a bolt. The threaded hole 2 at the edge of the die-casting can be connected to the threaded hole of other die-castings or parts made of non-die-casting materials through the connecting piece 3. The No. 1 connecting plate 5 and the No. 2 connecting plate 6 are clamped and limited to a certain extent. At the same time, the No. 1 through hole 7 and the No. 2 through hole 8 are in the same straight line with the threaded hole 2 to facilitate the subsequent threaded connection of the bolt. At the same time, the arc-shaped connecting strip 4 is a highly elastic metal structure with a rebound effect. When the bolt is connected, the rebound force of the arc-shaped connecting strip 4 drives the No. 1 connecting plate 5 and the No. 2 connecting plate 6 to lift the end of the bolt, so that the bolt is always in a tightened state to avoid loosening and rotation caused by loosening of the bolt;

[0031] Among them, a No. 1 limiting hole 9 is arranged on the outer wall of one side of the No. 1 connecting plate 5 away from the No. 2 connecting plate 6, and a plurality of groups of No. 1 limiting holes 9 are welded with inclined bars 10 on the middle inner walls. One end of the inclined bar 10 away from the inner wall of the No. 1 limiting hole 9 extends to the outside of the No. 1 limiting hole 9 and is connected with an inclined vertex 11. The plurality of groups of inclined bars 10 are arranged in a clockwise direction, and the inclined bars 10 have a certain resilience. When the bolt is spirally connected to the connecting piece 3 and the threaded hole 2 in a clockwise direction, the nut on the top of the bolt will press the inclined vertex 11 to translate downward. When the bolt is loosened and rotated in the opposite direction, the end of the inclined vertex 11 bounces upward, thereby exerting a reaction resistance to the rotation of the bolt in the opposite direction, making it more difficult for the bolt to loosen and rotate in the reverse direction, thereby increasing the stability of the bolt and the connecting piece.

[0032] Example 2

[0033] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 6 As shown, see the following description for details:

[0034] As a preferred embodiment, a gasket 12 is provided on the top of the No. 1 connecting plate 5, and a No. 2 limiting hole 13 is arranged on the top of the gasket 12, and the No. 2 limiting hole 13 matches the No. 1 limiting hole 9, wherein the gasket 12 matches the No. 1 connecting plate 5. When the effective length of the internal threaded hole 2 of the die-casting is insufficient, the gasket 12 can be connected to the top of the No. 1 connecting plate 5, and the corresponding number of gaskets 12 can be added according to the effective length required for the required threaded hole 2, thereby avoiding loosening or slipping during the connection process between the threaded hole 2 with insufficient effective length and the bolt.

[0035] As a preferred embodiment, the inner walls of multiple groups of No. 2 limiting holes 13 are welded with No. 2 inclined strips 14, and one end of the No. 2 inclined strip 14 away from the inner wall of the No. 2 limiting hole 13 extends to the outside of the No. 2 limiting hole 13 and is connected with a No. 2 inclined vertex angle 141. Multiple groups of No. 2 inclined strips 14 are arranged in a clockwise direction, wherein the No. 2 inclined vertex angle 141 has a similar function to the inclined vertex angle 11. While adding the gasket 12, the No. 2 inclined vertex angle 141 applies a reaction resistance to the reverse rotation of the bolt, making it more difficult for the bolt to loosen and rotate in the reverse direction, thereby increasing the stability of the bolt and the connecting piece.

[0036] As a preferred embodiment, the bottom inner walls of the No. 1 limiting hole 9 and the No. 2 limiting hole 13 are both provided with a No. 1 magnetic sheet 15, and the bottom of the gasket 12 is arranged with a limiting block 16, and multiple groups of limiting blocks 16 are matched with the No. 1 limiting hole 9, wherein the limiting block 16 is embedded in the No. 1 limiting hole 9 to limit the gasket 12 and prevent the gasket 12 from being displaced randomly after the connection.

[0037] As a preferred embodiment, the outer walls of multiple groups of limit blocks 16 are arranged with strip grooves 17, and the strip grooves 17 match the inclined strips 10. The bottom of the limit block 16 is connected to the second magnetic piece 18, and the first magnetic piece 15 and the second magnetic piece 18 are attracted to each other. When the gasket 12 is connected to the first connecting plate 5, the inclined strip 10 and the inclined top angle 11 can be embedded in the strip groove 17 to avoid the existence of a gap between the gasket 12 and the first connecting plate 5. At the same time, the attraction between the first magnetic piece 15 and the second magnetic piece 18 enables the gasket 12 and the first connecting plate 5 to be adsorbed and connected to each other for easy positioning.

[0038] As a preferred embodiment, the inner wall of the arc-shaped connecting strip 4 is welded with elastic reinforcing ribs 19, and the outer walls on the opposite sides of the No. 1 connecting plate 5 and the No. 2 connecting plate 6 are provided with fixing protrusions 20, and the fixing protrusions 20 are made of rubber material, wherein the elastic reinforcing ribs 19 play a role in strengthening the elasticity of the arc-shaped connecting strip 4, and the fixing protrusions 20 play an anti-slip role to increase the friction between the connecting piece 3 and the die-casting 1.

[0039] As a preferred embodiment, a movable groove 21 is arranged inside the No. 1 connecting plate 5, and the movable groove 21 is connected to the No. 1 through hole 7. A push rod 22 is embedded in the inner wall of the movable groove 21, and one end of the push rod 22 is connected to a spring 23. The end of the spring 23 away from the push rod 22 abuts against the inner wall of the movable groove 21, and the end of the push rod 22 away from the spring 23 passes through the movable groove 21 and is connected with a ball 24. When the threaded holes 2 of different diameters are connected with bolts, the spring 23 is compressed, contracted and rebounded, so that the ball 24 at the end of the push rod 22 is always in abutment with the bolt, so that the No. 1 through hole 7 and the No. 2 through hole 8 are always at the same center of the circle as the bolt, so as to avoid the displacement of the connecting part during the rotation of the nut and affect the connection effect.

[0040] As a preferred embodiment, the interior of the No. 2 connecting plate 6 is arranged with No. 2 movable grooves 25, which are connected to the No. 2 through holes 8, and the inner walls of one side of multiple groups of No. 2 movable grooves 25 are connected with rotating shafts 26, and the outer wall of the rotating shaft 26 is movably sleeved with a movable rod 27, wherein the movable rod 27 can rotate along the rotating shaft 26 as the center of the circle, and the movable rod 27 can be retracted into the No. 2 movable groove 25.

[0041] As a preferred embodiment, a No. 2 spring 28 is connected to the outer wall of one side of the middle part of the movable rod 27, and the end of the No. 2 spring 28 away from the movable rod 27 abuts against the inner wall of the No. 2 movable groove 25, and the end of the movable rod 27 away from the rotating shaft 26 is connected to the tip 29. Multiple groups of movable rods 27 are arranged in a clockwise inclined direction, wherein, when the bolt passes through the No. 2 through hole 8, the No. 2 spring 28 is compressed and contracted so that the movable rod 27 and the tip 29 can be retracted into the No. 2 movable groove 25. When the bolt is loosened and rotated in the opposite direction, the rebound force of the No. 2 spring 28 pushes the movable rod 27 and the tip 29 to apply resistance in the opposite direction to the outer wall of the bolt, thereby reducing the reverse rotation of the bolt when the bolt is loosened.

[0042] The working process of the present application is as follows: first, the threaded hole 2 at the edge of the die-casting can be connected to the threaded holes of other die-castings or parts made of non-die-casting materials through the connecting piece 3, and a certain degree of clamping and limiting is performed through the No. 1 connecting plate 5 and the No. 2 connecting plate 6. At the same time, the No. 1 through hole 7 and the No. 2 through hole 8 are in the same straight line with the threaded hole 2 to facilitate the subsequent threaded connection of the bolt. At the same time, the arc-shaped connecting strip 4 is a highly elastic metal structure with a rebound effect. After the bolt is connected, the rebound force of the arc-shaped connecting strip 4 drives the No. 1 connecting plate 5 and the No. 2 connecting plate 6 to lift the end of the bolt, so that the bolt is always in a tightened state to prevent the bolt from loosening. Causes loose rotation. When the bolt is loose and rotates in the opposite direction, the end of the inclined vertex angle 11 bounces upward to exert a reaction resistance to the rotation of the bolt in the opposite direction, making it more difficult for the bolt to rotate loosely in the opposite direction, thereby increasing the stability of the bolt and the connecting piece. When the effective length of the internal threaded hole 2 of the die-casting is insufficient, the gasket 12 can be connected to the top of the No. 1 connecting plate 5. The corresponding number of gaskets 12 can be added according to the effective length required for the required threaded hole 2, thereby avoiding looseness or slippage during the connection between the threaded hole 2 with insufficient effective length and the bolt. At the same time, the second inclined vertex angle 141 has a similar effect to the inclined vertex angle 11. , while adding the gasket 12, the second inclined top angle 141 applies a reaction resistance to the rotation of the bolt in the opposite direction, making it difficult for the bolt to loosen and rotate in the opposite direction, thereby increasing the stability of the bolt and the connecting piece, and the limit block 16 is embedded in the first limit hole 9 to limit the gasket 12 to prevent the gasket 12 from moving randomly after the connection, and at the same time, the first magnetic sheet 15 and the second magnetic sheet 18 are attracted to each other so that the gasket 12 and the first connecting plate 5 can be adsorbed and connected to each other for easy positioning, and when the threaded holes 2 with different diameters are connected with the bolts, the spring 23 is compressed and contracted to rebound, so that the ball 2 at the end of the push rod 22 4 is always in contact with the bolt, so that the No. 1 through hole 7 and the No. 2 through hole 8 are always at the same center of the circle with the bolt, avoiding the displacement of the connecting piece during the rotation of the nut, thereby affecting the connection effect. When the bolt passes through the No. 2 through hole 8, the No. 2 spring 28 is compressed and contracted, so that the movable rod 27 and the tip 29 can be contracted into the No. 2 movable groove 25. When the bolt is loosened and rotated in the reverse direction, the rebound force of the No. 2 spring 28 pushes the movable rod 27 and the tip 29 to apply reverse resistance to the outer wall of the bolt, thereby reducing the reverse rotation of the bolt when the bolt is loosened. The above is the working principle of this large die-casting threaded hole connecting piece structure.

[0043] Finally: The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A large die casting threaded hole connector structure, comprising a die casting (1), characterized in that: The die casting (1) is provided with threaded holes (2) arranged at the edge thereof, and the outer wall of the threaded hole (2) is connected with a connecting piece (3), and the connecting piece (3) comprises an arc-shaped connecting strip (4), a No. 1 connecting plate (5) and a No. 2 connecting plate (6), one end of the arc-shaped connecting strip (4) is welded with the No. 1 connecting plate (5), and the end of the arc-shaped connecting strip (4) away from the No. 1 connecting plate (5) is welded with the No. 2 connecting plate (6), a No. 1 through hole (7) is provided in the middle of the No. 1 connecting plate (5), and a No. 2 through hole (8) is provided in the middle of the No. 2 connecting plate (6), the No. 1 through hole (7) and the No. 2 through hole (8) are on the same axis, and the No. 1 through hole (7) and the No. 2 through hole (8) are also on the same axis as the threaded hole (2); A first limiting hole (9) is arranged on the outer wall of one side of the first connecting plate (5) away from the second connecting plate (6), and a plurality of groups of the first limiting holes (9) are welded with inclined strips (10) on the inner walls of the middle parts, and one end of the inclined strip (10) away from the inner wall of the first limiting hole (9) extends to the outside of the first limiting hole (9) and is connected with an inclined top angle (11), and the plurality of groups of the inclined strips (10) are arranged in a clockwise direction.

2. A large die casting threaded hole connector structure according to claim 1, characterized in that: A gasket (12) is arranged on the top of the No. 1 connecting plate (5), and a No. 2 limiting hole (13) is arranged on the top of the gasket (12), and the No. 2 limiting hole (13) matches the No. 1 limiting hole (9).

3. A large die casting threaded hole connector structure according to claim 1, characterized in that: The inner walls of the plurality of groups of the second limiting holes (13) are all welded with second inclined strips (14), one end of the second inclined strip (14) away from the inner wall of the second limiting hole (13) extends to the outside of the second limiting hole (13) and is connected with a second inclined vertex (141), and the plurality of groups of the second inclined strips (14) are arranged in a clockwise direction.

4. A large die casting threaded hole connector structure according to claim 1, characterized in that: The bottom inner walls of the No. 1 limiting hole (9) and the No. 2 limiting hole (13) are both provided with a No. 1 magnetic sheet (15), and the bottom of the gasket (12) is provided with a limiting block (16), and a plurality of groups of the limiting blocks (16) are matched with the No. 1 limiting hole (9).

5. A large die casting threaded hole connector structure according to claim 1, characterized in that: The outer walls of the plurality of groups of the limit blocks (16) are arranged with strip grooves (17), the strip grooves (17) match the inclined strips (10), the bottom of the limit blocks (16) is connected with a second magnetic sheet (18), and the first magnetic sheet (15) and the second magnetic sheet (18) attract each other.

6. A large die casting threaded hole connector structure according to claim 1, characterized in that: The inner wall of the arc-shaped connecting strip (4) is welded with an elastic reinforcing rib (19), and the outer walls of the No. 1 connecting plate (5) and the No. 2 connecting plate (6) on the opposite side are both provided with a fixing protrusion (20), and the fixing protrusion (20) is made of rubber material.

7. A large die casting threaded hole connector structure according to claim 1, characterized in that: The first connecting plate (5) is internally provided with a movable groove (21), the movable groove (21) being connected to the first through hole (7), the inner wall of the movable groove (21) being embedded with a push rod (22), one end of the push rod (22) being connected to a spring (23), the end of the spring (23) away from the push rod (22) being in contact with the inner wall of the movable groove (21), and the end of the push rod (22) away from the spring (23) passing through the movable groove (21) and being connected to a ball (24).

8. A large die casting threaded hole connector structure according to claim 1, characterized in that: The second connecting plate (6) is provided with second movable grooves (25) arranged inside, the second movable grooves (25) are connected with the second through hole (8), the inner walls of one side of multiple groups of the second movable grooves (25) are connected with a rotating shaft (26), and the outer wall of the rotating shaft (26) is movably sleeved with a movable rod (27).

9. A large die casting threaded hole connector structure according to claim 1, characterized in that: A second spring (28) is connected to an outer wall of one side of the middle of the movable rod (27); an end of the second spring (28) away from the movable rod (27) abuts against an inner wall of the second movable groove (25); an end of the movable rod (27) away from the rotating shaft (26) is connected to a tip portion (29); and a plurality of groups of movable rods (27) are arranged in a clockwise tilted direction.

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