Locking nut flattening tool

Abstract

The utility model relates to the technical field of manufacturing of AP1000 reactor core related components, aims to solve the problem that a locking nut and a single rod of a fixed type related component in a reactor core are loosened, and discloses a locking nut flattening tool which comprises a connecting base plate, a pressing rod, a supporting rod and a pressing piece, the supporting rod is installed on one side of the connecting base plate, and the pressing piece is installed on the other side of the connecting base plate. The pressing rod is rotatably installed on the connecting base plate, the pressing piece is rotatably installed on the connecting base plate and makes contact with the pressing rod, and the pressing rod is rotated to drive the pressing piece to rotate. According to the utility model, by utilizing the lever principle, the force required by the deformation of the locking nut can be met only by applying a certain force on the pressing rod, and the deformation amount is ensured, so that the effect of preventing loosening is achieved.

Description

Technical Field

[0001] This utility model relates to the field of AP1000 reactor core related component manufacturing technology, and in particular to a locking nut flattening tool. Background Technology

[0002] Lock nuts are primarily used to connect the single rod of a fixed component to the clamping component. The lock nut and the single rod are connected by a thread. Because the component is subjected to the scouring effect of water flow within the reactor, it generates slight vibrations, which can cause the lock nut to loosen from the rod. Therefore, the lock nut is deformed by external force to prevent loosening.

[0003] In existing technology, a hammer is used to apply force to a flat and sharp tool, causing the lock nut to deform. This method of deforming the lock nut has the following drawbacks:

[0004] First, the process is entirely manual, which makes it impossible to control the amount of force applied, and it is very easy to damage the locking nut, failing to meet the requirement that the locking nut has no cracks in its appearance;

[0005] Secondly, there are other accessories nearby when the locking nut is connected to the relevant rod, and the operating space is limited. Utility Model Content

[0006] The purpose of this utility model is to provide a locking nut flattening tool, which solves the problem of quickly flattening the locking nut while ensuring that the appearance of the locking nut meets the requirements when the operating space is small. This solves the problem of the locking nut and single rod of the fixed related components in the reactor core becoming loose, and effectively ensures the stable operation of the fixed related components in the reactor.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A locking nut flattening tool includes a connecting base plate, a pressure rod, a support rod, and a pressure plate. The support rod is installed on one side of the connecting base plate, the pressure rod is rotatably installed on the connecting base plate, and the pressure plate is rotatably installed on the connecting base plate and contacts the pressure rod. Rotating the pressure rod causes the pressure plate to rotate.

[0009] In some embodiments, the support rod is Z-shaped.

[0010] In some embodiments, the support rod is mounted to the rear of the connecting base plate.

[0011] In some embodiments, the support rod is mounted to the connecting base plate by connecting screws.

[0012] In some embodiments, the support rod is mounted with a first connecting pin via a connecting screw, one end of the spring is connected to the first connecting pin, and the other end is connected to the pressure plate.

[0013] In some embodiments, the first connecting pin has a circular hole, and the spring hooks onto the circular hole.

[0014] In some embodiments, the pressure plate has a T-shaped structure, with its bottom rotatably connected to the connecting substrate via a second fixing pin. One end of the upper part of the T-shape contacts the pressure rod, and the other end is used to press the positioning sleeve.

[0015] In some embodiments, a groove is provided on the bottom side of the pressure rod.

[0016] In some embodiments, the support piece is welded to the positioning sleeve.

[0017] In some embodiments, the positioning sleeve is mounted on the connecting substrate.

[0018] Compared with the prior art, the locking nut flattening tool provided by this utility model has the following advantages:

[0019] This invention utilizes the lever principle, requiring only a certain force to be applied to the pressure rod to satisfy the force needed to deform the locking nut, ensuring the amount of deformation and thus preventing loosening.

[0020] Furthermore, the compact combination structure of the positioning sleeve, pressure plate and support plate adopted in this utility model can effectively ensure that the locking nut has a certain structural support inside and outside in a narrow space. This structural design can ensure that while the locking nut is deformed, the amount of deformation of the locking nut is controlled, and the locking nut will not break due to excessive deformation or uneven deformation. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the technical description will be briefly introduced below.

[0022] Figure 1 A schematic diagram of the structure of the locking nut flattening tool provided by this utility model;

[0023] Figure 2 Enlarged detail of the locking nut flattening tool provided by this utility model;

[0024] Figure 3 A schematic diagram of the structure of the support sheet provided by this utility model;

[0025] Figure 4 A front view of the positioning sleeve provided by this utility model;

[0026] Figure 5 The left view of the positioning sleeve provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Connecting base plate; 2. Pressure rod; 3. Support rod; 4. Positioning sleeve; 5. Pressure plate; 6. Support plate; 7. First connecting pin; 8. First fixing pin; 9. Second fixing pin; 10. Spring; 11. Connecting screw; 12. Second connecting pin. Detailed Implementation

[0029] The following detailed description provides further details on specific implementation methods.

[0030] like Figure 1 and Figure 2 As shown, this utility model provides a locking nut flattening tool, including a connecting base plate 1, a pressure rod 2, a support rod 3, a positioning sleeve 4, a pressure plate 5, a support plate 6, a first connecting pin 7, a first fixing pin 8, a second fixing pin 9, a spring 10, and a connecting screw 11.

[0031] The support rod 3 is a Z-shaped rod. The support rod 3 is detachably connected to the connecting base plate 1 by connecting screws 11. A first connecting pin 7 is installed at the lower part of the support rod 3. One end of the first connecting pin 7 has a round hole facing the pressure rod 2 to facilitate the installation of the spring 10.

[0032] Optionally, the support rod 3 is installed as a whole at the rear of the connecting base plate 1.

[0033] Optionally, the first connecting pin 7 is fixed to the support rod 3 by welding.

[0034] One end of the spring 10 is hooked onto the round hole of the first connecting pin 7, and the other end is hooked onto the pressure plate 5, thereby achieving the connection.

[0035] The pressure plate 5 is connected to the connecting substrate 1 via the second fixing pin 9, and the support plate 6 is fixed inside the positioning sleeve 4 by welding. The positioning sleeve 4 is connected to the connecting substrate 1 via the first fixing pin 8.

[0036] The press 5 has a T-shaped structure. The bottom is connected to the connecting base plate 1 through the second fixing pin 9. One end of the T-shape contacts the pressure rod 2, and the other end is used to apply pressure to the opening of the positioning sleeve 4.

[0037] Preferably, the positioning sleeve 4 is an open ring structure, the specific structure of which is as follows: Figure 4 and Figure 5 As shown.

[0038] like Figure 3 As shown, the structure of the support piece 6 is similar to a thin rectangular prism with a trapezoidal structure cut at the top.

[0039] This utility model effectively protects the locking nut by combining the positioning sleeve 4, the pressure plate 5, and the support plate 6, preventing it from being damaged during deformation.

[0040] The pressure rod 2 is rotatably connected to the connecting base plate 1 via the second connecting pin 12. The lower end of the pressure rod 2 has a hook-shaped structure. For example, the lower end of the pressure rod 2 has a groove. The groove and the protrusion at one end of the pressure plate 5 cooperate. When the pressure rod 2 is rotated, the pressure plate 5 is driven to apply pressure to the opening of the positioning sleeve 4 through this cooperation.

[0041] This invention increases the force applied to the locking nut by using a lever-type combination of the pressure rod 2 and the pressure plate 5.

[0042] When assembling fixed components, first tighten the lock nut onto the single-bar end plug of the component. Then, the operator holds the lock nut clamping tool and inserts the support piece 6 into the groove on the single-bar end plug of the component. The positioning sleeve 4 wraps around the small ring on the upper outer side of the lock nut to achieve internal and external positioning and prevent the clamping tool from sliding with the lock nut during the application of force, which would result in uneven force distribution.

[0043] After the tool is installed, the operator holds the tool with one hand and presses the pressure rod 2 towards the support rod 3. The pressure rod 2 drives the pressure plate 5 to apply pressure to the opening of the positioning sleeve 4, thereby causing the locking nut to deform and sink into the groove on the single rod end plug of the relevant component. As pressure continues to be applied, the support plate inside the locking nut begins to play a supporting role, preventing the locking nut from deforming too much and causing damage to the outer surface. During this process, the spring extends under the action of tension.

[0044] After the locking nut is clamped and flattened, the operator releases the pressure rod 2. Under the tension of the spring 10, the pressure rod 2 springs back to its original position, causing the pressure plate 5 to move in the opposite direction back to its initial position. The operator then removes the tool with one hand, completing the entire process.

[0045] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nut clamping and flattening tool, characterized in that, It includes a connecting base plate (1), a pressure rod (2), a support rod (3), and a pressure plate (5). The support rod (3) is installed on one side of the connecting base plate (1). The pressure rod (2) is rotatably installed on the connecting base plate (1). The pressure plate (5) is rotatably installed on the connecting base plate (1) and contacts the pressure rod (2). Rotating the pressure rod (2) causes the pressure plate (5) to rotate.

2. The locking nut flattening tool according to claim 1, characterized in that, The support rod (3) is Z-shaped.

3. The locking nut flattening tool according to claim 1, characterized in that, The support rod (3) is installed at the rear of the connecting base plate (1).

4. The locking nut flattening tool according to claim 1, characterized in that, The support rod (3) is mounted to the connecting base plate (1) by connecting screws (11).

5. The locking nut flattening tool according to claim 1, characterized in that, The support rod (3) is mounted with a first connecting pin (7) via a connecting screw (11). One end of the spring (10) is connected to the first connecting pin (7), and the other end is connected to the pressure plate (5).

6. The locking nut flattening tool according to claim 5, characterized in that, The first connecting pin (7) has a round hole, and the spring (10) is hooked on the round hole.

7. The locking nut flattening tool according to claim 1, characterized in that, The pressure plate (5) has a T-shaped structure. Its bottom is rotatably connected to the connecting base plate (1) through the second fixing pin (9). One end of the upper part of the T-shape contacts the pressure rod (2), and the other end is used to press the positioning sleeve (4).

8. The locking nut flattening tool according to claim 7, characterized in that, The bottom side of the pressure rod (2) is provided with a groove.

9. The locking nut flattening tool according to claim 7, characterized in that, The support piece (6) is welded into the positioning sleeve (4).

10. The locking nut flattening tool according to claim 7, characterized in that, The positioning sleeve (4) is installed on the connecting base plate (1).

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