Expansion bolt special for nuclear power

Abstract

The utility model discloses a special expansion bolt for nuclear power, which comprises a bolt rod, a fixing ring, a fixing rod, a driving ring, a connecting ring, an expansion mechanism and a driving mechanism, the fixing rod is fixedly connected in the fixing ring, the bolt rod is rotatably arranged on the fixing rod, the driving ring is sleeved on the bolt rod, the connecting ring is arranged between the fixing ring and the driving ring, and the expansion mechanism is arranged between the fixing ring and the driving ring. The number of the expansion mechanisms is two, the two expansion mechanisms are arranged on the fixing ring and the driving ring correspondingly, the driving mechanism is arranged on the bolt rod and used for driving the bolt rod to rotate, the expansion bolt special for nuclear power can be conveniently and rapidly disassembled when the expansion bolt needs to be disassembled, time and labor are saved, and the use flexibility is improved; the construction efficiency is improved, the expansion bolt can be repeatedly used, and waste of the expansion bolt is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power parts and components, in particular to a special expansion bolt for nuclear power. Background Art

[0002] Nuclear power plants are important facilities for generating nuclear energy. When generating nuclear power, stable installation of nuclear power plants is particularly important. The construction of nuclear power plants mainly involves making concrete infrastructure in the selected area, and then installing nuclear power equipment on the concrete infrastructure through expansion bolts to ensure stable operation of the nuclear power equipment. In order to improve the fixing effect of existing expansion bolts, it is found through retrieval that patent announcement number CN215830904U discloses a special expansion bolt for nuclear power, which can use bolt sleeves to protect the already fixed expansion bolts, and protect the exposed part of the expansion bolts from being eroded by water, so that the fixing effect of the expansion bolts is more durable. However, when the expansion piece expands, the expansion piece expands by metal deformation. When the expansion bolt needs to be disassembled, since the expansion piece has expanded and is close to the edge of the mounting hole, the deformation of the expansion piece in the expansion bolt after expansion is often irreversible. If the installation position of the expansion bolt needs to be adjusted, it is difficult to pull it out of the mounting hole during disassembly, and the mounting hole needs to be enlarged, which in turn causes the concrete infrastructure to be broken. Therefore, the existing expansion bolts need to be improved. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a nuclear power-specific expansion bolt to solve the problem in the prior art that the expansion bolts after use undergo irreversible expansion deformation and are difficult to disassemble and pull out.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nuclear power special expansion bolt, comprising: a fixing ring, a fixing rod, a bolt rod, a driving ring, a connecting ring, an expansion mechanism and a driving mechanism;

[0007] The fixing rod is fixedly connected in the fixing ring;

[0008] The bolt rod is rotatably arranged on the fixing rod;

[0009] The driving ring is sleeved on the bolt rod;

[0010] The connecting ring is arranged between the fixing ring and the driving ring;

[0011] There are two expansion mechanisms, which are respectively arranged on the fixed ring and the driving ring;

[0012] The driving mechanism is arranged on the bolt rod and is used for driving the bolt rod to rotate.

[0013] Preferably, the expansion mechanism comprises: a support plate, an expansion plate and a support assembly;

[0014] There are a plurality of support plates, and the plurality of support plates are respectively fixedly connected to the connecting ring and the driving ring;

[0015] There are multiple expansion plates, and the multiple expansion plates are respectively fixedly connected to multiple support plates;

[0016] The support assembly is arranged between the expansion plate and the bolt rod, and is used to support a plurality of the support plates.

[0017] Further, the support assembly includes: a support ring and a stabilizing rod;

[0018] The bolt rod and the fixing rod are both slidably sleeved with the support ring;

[0019] A plurality of stabilizing rods are equidistantly connected to the outer wall of the support ring, and the other ends of the stabilizing rods are in contact with the support plates at corresponding positions.

[0020] Furthermore, the driving mechanism includes: a driving plate and a driving rod;

[0021] The driving plate is fixedly connected to the driving ring, the driving ring is provided with a screw hole, and the bolt rod is threadedly connected in the screw hole;

[0022] The driving rod is fixedly connected to the bolt rod.

[0023] As a further solution of the present application, a locking block is provided on the bolt rod, a screw hole is opened on the locking block, and the bolt rod is threadedly connected in the screw hole.

[0024] As a further solution of the present application, a plurality of anti-slip grooves are provided on the expansion plate.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the utility model provides a nuclear power special expansion bolt, which has the following beneficial effects:

[0027] In the utility model, through the cooperation between the fixing ring, the fixing rod, the bolt rod, the driving ring, the connecting ring, the expansion mechanism and the driving mechanism, it is convenient to quickly disassemble the expansion bolt when it is needed, which is relatively time-saving and labor-saving, improves the flexibility of use, solves the problem that the expansion bolt is irreversible due to expansion deformation and is difficult to disassemble and pull out, and at the same time can improve the reuse of the expansion bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the expansion mechanism for this application;

[0030] Figure 3 This is a schematic diagram of the structure of the support plate, expansion plate, rotating seat and rotating plate of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of the expansion plate and the support assembly of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the fixing rod, bolt rod and support ring in this application.

[0033] In the figure: 1. fixing ring; 2. fixing rod; 3. bolt rod; 4. driving ring; 5. connecting ring; 6. support plate; 7. expansion plate; 8. support ring; 9. stabilizing rod; 10. driving plate; 11. driving rod; 12. locking block; 13. slider; 14. long rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figures 1 to 5 , a nuclear power special expansion bolt, comprising: a fixing ring 1, a fixing rod 2, a bolt rod 3, a driving ring 4, a connecting ring 5, an expansion mechanism and a driving mechanism, the expansion plate 7 is provided with a plurality of anti-slip grooves, a locking block 12 is provided on the bolt rod 3, a screw hole is opened on the locking block 12, the bolt rod 3 is threadedly connected in the screw hole, the fixing rod 2 is fixedly connected in the fixing ring 1, the bolt rod 3 is rotatably arranged on the fixing rod 2, the driving ring 4 is sleeved on the bolt rod 3, and the connecting ring 5 is arranged between the fixing ring 1 and the driving ring 4. Through the cooperation among the fixing ring 1, the fixing rod 2, the bolt rod 3, the driving ring 4, the connecting ring 5, the expansion mechanism and the driving mechanism, it is convenient to quickly disassemble the expansion bolt 3 when it is needed, which is relatively time-saving and labor-saving, improves the use flexibility, solves the problem that the expansion bolt is irreversible and difficult to disassemble and pull out due to expansion deformation, and can also improve the reuse of the expansion bolt.

[0036] Among them, there are two expansion mechanisms, which are respectively arranged on the fixing ring 1 and the driving ring 4, the expansion mechanism includes: a support plate 6, an expansion plate 7 and a support assembly, the support plate 6 is provided with multiple, and the multiple support plates 6 are respectively fixedly connected to the connecting ring 5 and the driving ring 4, the expansion plate 7 is provided with multiple, and the multiple expansion plates 7 are respectively fixedly connected to the multiple support plates 6, the support assembly is arranged between the expansion plate 7 and the bolt rod 3, and is used to support the multiple support plates 6, the support assembly includes: a support ring 8 and a stabilizing rod 9, the bolt rod 3 and the fixing rod 2 are both slidably sleeved with the support ring 8, and the outer wall of the support ring 8 is equidistantly connected with multiple stabilizing rods 9 on the circumference, and the other end of the stabilizing rod 9 contacts the support plate 6 at the corresponding position, specifically, the support plate 6 is tilted by the movement of the driving ring 4, and the multiple expansion plates 7 are driven to expand outward by the support of the stabilizing rod 9, so that they can be quickly and stably fixed in the mounting hole.

[0037] Among them, the driving mechanism is arranged on the bolt rod 3, and is used for driving the bolt rod 3 to rotate. The driving mechanism includes: a driving plate 10 and a driving rod 11. The driving plate 10 is fixedly connected to the driving ring 4. The driving ring 4 is provided with a screw hole. The bolt rod 3 is threadedly connected in the screw hole. The driving rod 11 is fixedly connected to the bolt rod 3. Specifically, the driving rod 11 is rotated by the operator. When the driving rod 11 rotates, the bolt rod 3 is driven to rotate. When the bolt rod 3 rotates, the driving ring 4 and the connecting ring 5 are driven to approach the fixed ring 1, thereby driving the support plate 6 and the expansion plate 7 to expand.

[0038] In summary, when the nuclear power special expansion bolt needs to be fixed in the installation hole, the device is inserted into the installation hole, and the operator rotates the driving rod 11 to rotate. When the driving rod 11 rotates, the bolt rod 3 is driven to rotate. When the bolt rod 3 rotates, the operator needs to manually press the driving ring 4 to prevent the driving ring 4 from rotating synchronously with the bolt rod 3. When the bolt rod 3 rotates, the driving ring 4 and the connecting ring 5 are driven to approach the fixing ring 1. In the process of the driving ring 4 and the connecting ring 5 approaching the fixing ring 1, the expansion plate 7 is supported by the stabilizing rod 9 provided on the support ring 8, and the expansion plate 7 is stabilized by the inclination of the support plate 6. Stable support, so that multiple expansion plates 7 are expanded and pressed against the inner wall of the mounting hole. When the expansion bolt 3 needs to be removed, the bolt rod 3 can be rotated in the opposite direction. It should also be noted that after the bolt rod 3 is rotated several times, the expansion plate 7 has been expanded and pressed against the inner wall of the mounting hole. At this time, the operator can release the hand pressing the drive ring 4. When the drive ring 4 and the fixed ring 1 move away from each other, the multiple expansion plates 7 will be straightened, thereby pressing the stabilizing rod 9 back. When the drive ring 4 and the fixed ring 1 are close to each other, the elastic support of the stabilizing rod 9 can ensure that the expansion plate 7 will not shrink inwards, but will only expand outwards.

[0039] In order to ensure that the two support rings 8 only slide on the bolt rod 3 and the fixed rod 2 respectively, but do not rotate, a sliding groove is opened on the fixed rod 2, and a sliding block 13 is provided in one of the support rings 8. The sliding block 13 can be slidably set in the sliding groove. In addition, a long rod 14 is connected between the two support rings 8, thereby ensuring that the two support rings 8 only slide and do not rotate.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nuclear power special expansion bolt, comprising: Bolt rod (3) ， It is characterized by further comprising: Fixed ring (1); A fixing rod (2), the fixing rod (2) being fixedly connected in the fixing ring (1), and the bolt rod (3) being rotatably arranged on the fixing rod (2); A driving ring (4), wherein the driving ring (4) is sleeved on the bolt rod (3); A connecting ring (5), wherein the connecting ring (5) is arranged between the fixing ring (1) and the driving ring (4); An expansion mechanism, wherein two expansion mechanisms are provided, and the two expansion mechanisms are respectively arranged on the fixing ring (1) and the driving ring (4); A driving mechanism, wherein the driving mechanism is arranged on the bolt rod (3) and is used to drive the bolt rod (3) to rotate.

2. A nuclear power special expansion bolt according to claim 1, characterized in that: The expansion mechanism comprises: A support plate (6), wherein a plurality of the support plates (6) are provided, and the plurality of support plates (6) are respectively fixedly connected to the connecting ring (5) and the driving ring (4); An expansion plate (7), wherein a plurality of the expansion plates (7) are provided, and the plurality of expansion plates (7) are respectively fixedly connected to a plurality of support plates (6); A support assembly is arranged between the expansion plate (7) and the bolt rod (3) and is used to support a plurality of the support plates (6).

3. A nuclear power special expansion bolt according to claim 2, characterized in that: The support assembly comprises: A support ring (8), the bolt rod (3) and the fixing rod (2) are both slidably sleeved with the support ring (8); Stabilizing rods (9), a plurality of stabilizing rods (9) are equidistantly connected to the outer wall of the supporting ring (8), and the other ends of the stabilizing rods (9) are in contact with the supporting plate (6) at corresponding positions.

4. A nuclear power special expansion bolt according to claim 3, characterized in that: The driving mechanism comprises: A driving plate (10), wherein the driving plate (10) is fixedly connected to the driving ring (4), the driving ring (4) is provided with a screw hole, and the bolt rod (3) is threadedly connected in the screw hole; A driving rod (11), wherein the driving rod (11) is fixedly connected to the bolt rod (3).

5. The nuclear power special expansion bolt according to claim 4, characterized in that: The bolt rod (3) is provided with a locking block (12), the locking block (12) is provided with a screw hole, and the bolt rod (3) is threadedly connected in the screw hole.

6. The nuclear power special expansion bolt according to claim 5, characterized in that: The expansion plate (7) is provided with a plurality of anti-slip grooves.

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