Mechanism module assembling auxiliary device for nuclear power station

Abstract

The utility model relates to a mechanism module assembling auxiliary device for nuclear power station, which comprises a main support (1), a pinch bar (2), a pulley (3) and an upper support plate (4), the front end of the main support (1) is provided with the pulley (3) which can be used as a fulcrum, the rear end of the main support (1) is fixedly connected with the pinch bar (2), and the upper support plate (4) is installed on the upper portion of the main support (1). Compared with the prior art, by utilizing the lever principle and the rolling friction principle, the labor intensity of personnel can be reduced, and the mounting quality and precision of the module can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power plant maintenance assistance, in particular to an auxiliary device for assembling mechanism modules in a nuclear power plant. Background Technique

[0002] In various operating nuclear power plants, a valve station with a pneumatic-hydraulic actuator is used. The actuator of this valve station has a complex structure, a large appearance, and a heavy mass. During each major overhaul of the nuclear power plant, it is necessary to disassemble and overhaul this actuator.

[0003] Due to the large volume and heavy weight of this actuator, lifting tools must be used for hoisting disassembly and assembly. However, in one link of the work, that is, when disassembling and assembling the oil control modules on both sides, restricted by the upper-wide and lower-narrow shape of the mechanism, the crane cannot be vertically translated in place, and only a guide rod can be used, combined with manpower, to move the module in or out as a whole. The work intensity is high and it is not safe. Especially during assembly, it is difficult to guarantee the position accuracy and precision. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary device for assembling mechanism modules in a nuclear power plant, which saves manpower and simultaneously guarantees the installation quality and precision.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The utility model provides an auxiliary device for assembling mechanism modules in a nuclear power plant, including a main bracket, a pry bar, a pulley, and an upper support plate. Among them,

[0007] A pulley that can be used as a fulcrum is arranged at the front end of the main bracket, a pry bar is fixedly connected to the rear end of the main bracket, and a movable upper support plate is installed on the upper part of the main bracket.

[0008] Preferably, a groove is opened at the front end of the main bracket, pulley shaft holes are opened on both sides of the groove, a pulley shaft is installed through the pulley shaft holes, and the pulley shaft penetrates through the pulley.

[0009] Further preferably, the pulley is rotatably connected to the pulley shaft, and the pulley shaft is fixedly connected to the main bracket.

[0010] Further preferably, the pulley shaft is a fixed shaft pin, and two anti-loosening pins are provided at both ends of the pulley shaft, and the anti-loosening pins are perpendicular to the pulley shaft.

[0011] Preferably, the front end of the pulley protrudes from the main bracket.

[0012] Further preferably, the bottom end of the pulley protrudes from the main bracket, the top of the pulley is not higher than the main bracket, the diameter of the pulley is greater than the height of the main bracket, the auxiliary device contacts the ground through the pulley, and the auxiliary device uses the pulley as a fulcrum to lift the heavy object.

[0013] Preferably, on both sides of the upper support plate, at positions corresponding to the side plates of the main bracket, upper support plate shaft holes are provided, and corresponding upper support plate shafts are installed in the upper support plate shaft holes.

[0014] Further preferably, the upper support plate is movably connected to the upper support plate shaft, and the upper support plate shaft is fixedly connected to the main bracket.

[0015] Further preferably, the upper support plate shaft is a rotating shaft pin, and two anti-loosening pins are provided at both ends of the upper support plate shaft, and the anti-loosening pins are perpendicular to the upper support plate shaft.

[0016] In the present utility model, the upper support plate is arranged to be movably connected, which helps to adjust the contact surface between the upper support plate and the mechanism module when using the auxiliary device, thereby expanding the force-bearing area, reducing the pressure, and improving the bearing capacity of the auxiliary device.

[0017] Preferably, there is an included angle between the crowbar and the main bracket, and the included angle is 120° - 150°, and the included angle refers to the angle formed along the crowbar and the top of the main bracket.

[0018] In the present utility model, by setting a certain angle between the crowbar and the main bracket, the lever principle can be better utilized to lift the mechanism module with a smaller force; better friction can be provided to prevent the mechanism module from sliding during the dragging process, ensuring the installation quality and safety; the crowbar and the main bracket being at a certain angle is beneficial to improving the strength and rigidity of the auxiliary device and the bending resistance during use.

[0019] Preferably, an anti-slip rubber sleeve is provided at one end of the crowbar away from the main bracket.

[0020] Preferably, the tops of the side plates at the front end of the main bracket are set as inclined surfaces with a slope of 15° - 30°, and the inclined surfaces can be used as guiding extension parts, which helps the auxiliary device to be smoothly and accurately inserted into the bottom of the mechanism module, reducing friction and collision during the operation process.

[0021] Preferably, the auxiliary device is made of formed pipe materials and plate materials.

[0022] Further preferably, the auxiliary device is made of carbon steel.

[0023] Compared with the prior art, the present utility model has the following beneficial effects:

[0024] (1) The utility model provides an auxiliary device for assembling mechanism modules in a nuclear power plant, which can lift heavy objects through an upper support plate and use pulleys to translate and drag the heavy objects to a proper position, helping to reduce the labor intensity of personnel and ensuring the installation quality and precision of the modules.

[0025] (2) The auxiliary device provided by the utility model adopts a crowbar structure and uses the lever principle to reduce the force exerted by the operator when lifting the module.

[0026] (3) The auxiliary device provided by the utility model adopts a pulley structure and uses the principle of rolling friction to convert sliding friction into rolling friction, which can reduce the force exerted by personnel when dragging the mechanism module.

[0027] (4) The auxiliary device provided by the utility model has a movable upper support plate, which increases the force-bearing area with the mechanism module, can further reduce the pressure, and improves the stability and load-bearing capacity of the auxiliary device.

[0028] (5) The auxiliary device provided by the utility model uses formed pipes and plates and can be made through simple processing. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the utility model.

[0030] In the figure, 1 - main support; 2 - crowbar; 3 - pulley; 4 - upper support plate; 5 - pulley shaft; 6 - upper support plate shaft. Detailed Embodiment

[0031] The following combines the drawings and specific embodiments to describe the utility model in detail. This embodiment is implemented on the premise of the technical solution of the utility model, and gives the detailed implementation method and specific operation process, but the protection scope of the utility model is not limited to the following embodiments.

[0032] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the following embodiments or examples, if there is no special description of the functional components or structures, it means that they are all conventional components or conventional structures adopted in the art to achieve the corresponding functions.

[0035] Embodiment 1

[0036] An auxiliary device for assembling mechanism modules used in a nuclear power plant, the structure of which is as Figure 1 shown, including a main bracket 1, a pulley 3 is provided at the front end of the main bracket 1, a crowbar 2 is fixedly connected to the rear end, and an upper support plate 4 is installed on the upper part. The auxiliary device provided in this embodiment uses the pulley 3 as a fulcrum to lift the mechanism module.

[0037] Embodiment 2

[0038] An auxiliary device for assembling mechanism modules used in a nuclear power plant, the auxiliary device is prepared by using formed pipes and plates, and the auxiliary device is made of carbon steel. The specific structure is as Figure 1 shown, the auxiliary device includes a main bracket 1, a pulley 3, a crowbar 2, and an upper support plate 4.

[0039] Among them, a groove is opened at the front end of the main bracket 1, and a pulley 3 is arranged inside the groove. A pulley shaft hole is opened on each side of the groove, and a pulley shaft 5 passes through the hole. The pulley shaft 5 is a fixed pin shaft, and the pulley shaft 5 is fixed in the groove of the main bracket 1. The pulley 3 is arranged at the front end of the main bracket 1 through the pulley shaft 5 and the pulley shaft hole, and the pulley 3 is rotatably connected to the pulley shaft 5. Two anti-loosening pins are provided at each end of the pulley shaft 5, and the anti-loosening pins are perpendicular to the pulley shaft 5. The height of the pulley 3 is higher than that of the main bracket 1. The auxiliary device provided in this embodiment uses the pulley 3 as a fulcrum to lift the mechanism module.

[0040] An upper support plate 4 is arranged at the upper end of the main bracket 1. The side plates on both sides of the upper support plate 4 are isosceles trapezoids with a wider upper part and a narrower lower part. The upper support plate 4 is arranged at the upper end of the main bracket 1 through upper support plate shafts 6 and upper support plate shaft holes arranged at corresponding positions on the side plates on both sides of the upper support plate 4 and the side plates on both sides of the main bracket 1. The upper support plate shaft 6 is fixedly connected to the main bracket 1, and the upper support plate shaft 6 is movably connected to the upper support plate 4. The upper support plate shaft 6 is a rotating pin shaft, and the upper support plate 4 can rotate relative to the main bracket 1 with the upper support plate shaft 6 as the center. Two anti-loosening pins are provided at each end of the upper support plate shaft 6, and the anti-loosening pins are perpendicular to the upper support plate shaft 6.

[0041] A pry bar 2 that tilts upward is fixedly connected to the rear end of the main bracket 1. An anti-slip rubber sleeve is sleeved on the end of the pry bar 2 away from the main bracket 1, which can provide better grip. The included angle between the pry bar 2 and the main bracket 1 is 120°.

[0042] In this embodiment, the pry bar 2 is a round rod, which facilitates the smoother rolling of the auxiliary device of this embodiment when using a pulley.

[0043] When using the auxiliary device of this embodiment, the following steps are specifically included:

[0044] S1. Place the mechanism module at the predetermined position by a crane, ensure its alignment with other components, pass the guiding long bolt through the preset hole of the mechanism module, and temporarily fix it with the guiding long bolt.

[0045] S2. Hold the tail end of the pry bar 2 and insert the main bracket 1 part of the auxiliary device of this embodiment into the lower part of the mechanism module.

[0046] S3. Slowly lift the pry bar 2 to make the upper supporting plate 4 fit smoothly with the lower surface of the mechanism module.

[0047] S4. Forcefully lift the pry bar 2 to slightly lift the mechanism module.

[0048] S5. Drag the pry bar 2 and use the pulley 3 to smoothly move the mechanism module to complete the assembly work.

[0049] The utility model was applied during the major overhaul of the nuclear island of a nuclear power plant in the disassembly and overhaul of the gas-liquid actuators of two valve stations. Using the auxiliary device of the utility model can assist in the assembly work of the oil control module in the gas-liquid actuator, and the expected results have been achieved. The evaluation is as follows:

[0050] 1. Ensure the stability of the structure of the device itself of the utility model, and have sufficient strength to bear the gravity of heavy objects.

[0051] 2. Can be inserted under the heavy object.

[0052] 3. Can smoothly lift the heavy object.

[0053] 4. Can translate the heavy object.

[0054] 5. Can be reused.

[0055] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those who are familiar with the technology in this field can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. An auxiliary device for assembling mechanism modules used in a nuclear power plant, characterized in that, It includes a main support (1), a crowbar (2), a pulley (3), and an upper support plate (4). Among them, a pulley (3) that can serve as a fulcrum is provided at the front end of the main support (1), a crowbar (2) is fixedly connected to the rear end of the main support (1), and an upper support plate (4) is installed on the upper part of the main support (1).

2. The auxiliary device for assembling the mechanism module for a nuclear power plant according to claim 1, wherein, A groove is formed at the front end of the main support (1), pulley shaft holes are formed on both sides of the groove, a pulley shaft (5) is installed through the pulley shaft holes, and the pulley shaft (5) penetrates through the pulley (3).

3. The auxiliary device for assembling the mechanism module for a nuclear power plant according to claim 2, characterized in that, The pulley (3) is rotatably connected to the pulley shaft (5), and the pulley shaft (5) is fixedly connected to the main support (1).

4. An auxiliary device for assembling mechanism modules used in a nuclear power plant according to claim 2, characterized in that, The pulley shaft (5) is a fixed shaft pin, and two anti-loosening pins are provided at both ends of the pulley shaft (5), and the anti-loosening pins are perpendicular to the pulley shaft (5).

5. An auxiliary device for assembling a mechanism module for a nuclear power plant according to claim 1, characterized in that, The front end of the pulley (3) protrudes from the main support (1).

6. The auxiliary device for assembling the mechanism module for a nuclear power plant according to claim 1, wherein, Upper support plate shaft holes are formed at the positions corresponding to the side plates on both sides of the upper support plate (4) and the side plates on both sides of the main support (1), and corresponding upper support plate shafts (6) are installed in the upper support plate shaft holes.

7. An auxiliary device for assembling mechanism modules for a nuclear power plant according to claim 6, characterized in that, The upper support plate (4) is movably connected to the upper support plate shaft (6), and the upper support plate shaft (6) is fixedly connected to the main support (1).

8. An auxiliary device for assembling mechanism modules for a nuclear power plant according to claim 6, characterized in that, The upper support plate shaft (6) is a rotating shaft pin, and two anti-loosening pins are provided at both ends of the upper support plate shaft (6), and the anti-loosening pins are perpendicular to the upper support plate shaft (6).

9. An auxiliary device for assembling mechanism modules for a nuclear power plant according to claim 1, characterized in that, An angle is formed between the crowbar (2) and the main support (1), and the angle is 120° to 150°.

10. An auxiliary device for assembling a mechanism module for a nuclear power plant according to claim 1, characterized in that, An anti-slip rubber sleeve is provided at the end of the crowbar (2) away from the main support.

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