A steam generator inner frame processing positioning device

Abstract

The utility model belongs to steam generator processing field provides a steam generator internal frame processing positioning device, steam generator internal frame processing positioning device includes the machine table, has the top mouth on the machine table, is equipped with the positioning frame on the top mouth, the multiple guide bars are inserted in on the positioning frame, the inside and outside both ends of guide rod are equipped with the connecting plate, the clamping plate respectively, the connecting plate is inserted with the slide rod outward, one end fixed mounting is in the positioning frame on the slide rod, the other end position installation is in the inside of connecting plate, is equipped with the pre -tight spring between the positioning frame and the connecting plate on the slide rod, the lower edge of connecting plate inside forms the guide surface outward. This positioning device promotes the connecting plate through the push-up plate ascension, utilizes the pre -tight spring and the guide rod and makes the clamping plate to the inside frame carries out the preliminary positioning, further clamps the inside frame through the clamping cylinder drive pressure plate of clamping assembly, whole positioning process operation is simple, quick, can effectively improve the processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of steam generator processing, and in particular relates to a steam generator internal frame processing and positioning device. Background Technology

[0002] In the manufacturing process of steam generators, the internal frame is a crucial component, and its machining accuracy directly affects the performance and quality of the steam generator. However, uneven stress during machining can easily cause deformation, and traditional positioning devices often face problems such as insufficient positioning accuracy and poor clamping stability.

[0003] Existing positioning equipment mostly uses manual or single-cylinder driven clamping methods, which makes it difficult to achieve precise centering and positioning of the internal frame, and easily leads to workpiece misalignment, corner warping, and other phenomena. At the same time, the clamping force of traditional devices is difficult to adjust. Too large a force can easily cause plastic deformation of the internal frame, while too small a force cannot guarantee the stability during processing, seriously affecting the processing quality of subsequent welding, drilling and other processes. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a steam generator internal frame processing and positioning device, which aims to solve the problems of insufficient positioning accuracy and clamping stability of existing steam generator internal frame processing and positioning devices.

[0005] The present invention adopts the following technical solution:

[0006] A steam generator internal frame processing and positioning device is characterized in that: the steam generator internal frame processing and positioning device includes a machine base, the machine base has a top opening, a positioning frame is provided on the top opening, multiple guide rods are inserted through the positioning frame, the inner and outer ends of the guide rods are respectively provided with connecting plates and clamping plates, a sliding rod is inserted through the connecting plate outward, one end of the sliding rod is fixedly installed on the positioning frame, and the other end is limited and installed on the inner side of the connecting plate, a pre-tensioning spring is provided on the sliding rod between the positioning frame and the connecting plate, the lower edge of the inner side of the connecting plate forms a guide surface facing downward and outward, a liftable push plate is provided in the machine base directly opposite the top opening, the push plate is located between the lower edges of the two connecting plates, and multiple clamping assemblies are also provided on the machine base.

[0007] Furthermore, a pair of limiting plates are provided on the side wall of the positioning frame between the two clamping plates.

[0008] Furthermore, the clamping assembly is provided on the machine base facing the limiting plate and the clamping plate. The clamping assembly includes a fixed base, and a clamping cylinder is provided on the fixed base. The drive shaft of the clamping cylinder is provided with a fixed plate. A pair of guide posts are inserted into each end of the fixed plate. The tail ends of all the guide posts are limited and installed on the back of the fixed plate. The front ends are provided with a pressure plate. A preload spring is sleeved on the guide posts between the pressure plate and the fixed plate.

[0009] Furthermore, a limiting seat is provided on the machine base opposite the fixed plate, the limiting seat has a limiting groove, and a limiting guide block is provided on the bottom surface of the fixed plate, the limiting guide block being located in the limiting groove.

[0010] Furthermore, the machine tool is equipped with a base frame directly opposite the top opening, and a guide rod is inserted into the base frame facing upward. The top of the guide rod is connected to the push plate, and the base frame is also equipped with a push cylinder for driving the push plate to move up and down.

[0011] The beneficial effects of this utility model are:

[0012] 1. This device uses a push plate to lift and push the connecting plate, and uses a pre-tightening spring and guide rod to initially position the internal frame with the clamping plate. Then, the clamping cylinder of the clamping assembly drives the pressure plate to further clamp the internal frame. The entire positioning process is simple and fast, and can effectively improve processing efficiency.

[0013] 2. This positioning device, by setting a limiting plate, multiple clamping components, and adjustable pre-tensioning and pre-compression springs, can adapt to internal frames of different sizes, and has good versatility and adaptability.

[0014] 3. By utilizing the elasticity of the pre-tension spring and the pre-compression spring, the clamping force of the clamping plate and the pressure plate on the internal frame can be evenly distributed, avoiding deformation of the internal frame due to uneven force during positioning, thereby ensuring processing quality. Attached Figure Description

[0015] Figure 1 This utility model provides an overall drawing of a steam generator internal frame machining and positioning device.

[0016] Figure 2 This utility model provides a schematic diagram of the installation of the connecting plate and clamping plate.

[0017] Figure 3 This is a schematic diagram of the clamping assembly provided by this utility model.

[0018] Figure 4 This utility model provides a schematic diagram of the connecting plate structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0020] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0021] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.

[0022] Combination Figure 1-4 As shown, the steam generator internal frame processing and positioning device includes a machine base 1 with a top opening. A positioning frame 2 is provided on the top opening, and multiple guide rods 3 are inserted through the positioning frame 2. Connecting plates 5 and clamping plates 4 are respectively provided at the inner and outer ends of the guide rods 3. A sliding rod 6 is inserted through the connecting plate 5 outward. One end of the sliding rod 6 is fixedly installed on the positioning frame 2, and the other end is limited and installed on the inner side of the connecting plate 5. A pre-tensioning spring 7 is provided on the sliding rod 6 between the positioning frame 2 and the connecting plate 5. A guide surface 8 is formed on the lower edge of the inner side of the connecting plate 5 facing downward and outward. A liftable push plate 9 is provided inside the machine base 1, directly opposite the top opening. The push plate 9 is located between the lower edges of the two connecting plates 5. Multiple clamping assemblies are also provided on the machine base 1.

[0023] Because a pair of limiting plates 10 are provided on the side wall of the positioning frame 2 between the two clamping plates, before using this device to position the internal frame, the two clamping plates are in an open state, and the pre-tension springs are in a compressed state. Then, the internal frame of the steam generator to be processed is placed on the positioning frame, so that the edge of the internal frame contacts the limiting plates, thereby achieving the initial horizontal positioning of the internal frame.

[0024] At this point, the push plate descends, no longer pushing against the lower edge of the connecting plate. The preload spring returns to its original deformation, the connecting plate moves inward, and the clamping plate tightly clamps the internal frame. Finally, multiple clamping assemblies work simultaneously to further clamp and secure the internal frame. After the internal frame is accurately and stably positioned and clamped, processing equipment can be used to perform processing operations on the internal frame, such as cutting, drilling, and welding.

[0025] After machining is completed, the push plate rises, and its side wall contacts the guide surface of the connecting plate. As the push plate continues to rise, the guide surface is subjected to an upward thrust, causing the connecting plate to move outward. The preload spring is compressed, and the clamping plate releases the internal frame. At the same time, the clamping assembly releases its clamping force on the internal frame, at which point the machined internal frame can be removed from the positioning frame.

[0026] As a preferred structure, such as Figure 1 , Figure 3 The machine base 1 is equipped with clamping components facing the limiting plate 10 and the clamping plate 4. The clamping components include a fixed base 11, a clamping cylinder 12 on the fixed base 11, a fixed plate 13 on the drive shaft of the clamping cylinder 12, a pair of guide posts 14 passing through each end of the fixed plate 13, the tail of all the guide posts 14 being limited and installed on the back of the fixed plate, and a pressure plate 15 being provided at the front end. A preload spring 16 is sleeved on the guide post 14 between the pressure plate 15 and the fixed plate.

[0027] In this device, there are three clamping assemblies. When the clamping assembly needs to clamp the inner frame, the clamping cylinder drives the fixing plate to move forward, and the pressure plate also moves forward. Under the action of the preload spring, the pressure plate further clamps the inner frame.

[0028] In this structure, a limiting seat 17 is provided on the machine base 1, directly opposite the fixed plate 13. The limiting seat 17 has a limiting groove 18, and a limiting guide block 19 is provided on the bottom surface of the fixed plate 13, with the limiting guide block 19 located within the limiting groove. Due to the function of the limiting seat and the limiting guide block, the movement of the fixed plate is more stable, ensuring the uniformity of the clamping force of the pressure plate on the internal frame.

[0029] In addition, such as Figure 2 The machine base 1 has a base frame 20 directly opposite the top opening. A guide rod 21 is inserted into the base frame 20, and the top of the guide rod 21 is connected to the push plate 9. The base frame 20 is also equipped with a push cylinder (obscured in the figure) for driving the push plate to move up and down. The push cylinder enables the push plate to move up and down stably, providing reliable power support for the positioning of the internal frame.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machining and positioning device for the internal frame of a steam generator, characterized in that: The internal frame processing and positioning device for the steam generator includes a machine base with a top opening. A positioning frame is provided on the top opening, and multiple guide rods are inserted through the positioning frame. Connecting plates and clamping plates are respectively provided at the inner and outer ends of the guide rods. A sliding rod is inserted through the connecting plate outward. One end of the sliding rod is fixedly installed on the positioning frame, and the other end is limited and installed on the inner side of the connecting plate. A pre-tensioning spring is provided on the sliding rod between the positioning frame and the connecting plate. A guide surface is formed on the lower edge of the inner side of the connecting plate facing downward and outward. A liftable push plate is provided in the machine base directly opposite the top opening. The push plate is located between the lower edges of the two connecting plates. Multiple clamping assemblies are also provided on the machine base.

2. The steam generator internal frame machining and positioning device as described in claim 1, characterized in that: A pair of limiting plates are provided on the side wall of the positioning frame between the two clamping plates.

3. The steam generator internal frame machining and positioning device as described in claim 2, characterized in that: The clamping assembly is provided on the machine base opposite the limiting plate and the clamping plate. The clamping assembly includes a fixed base, on which a clamping cylinder is provided. The drive shaft of the clamping cylinder is provided with a fixed plate. A pair of guide posts are inserted into each end of the fixed plate. The tail ends of all the guide posts are limited and installed on the back of the fixed plate. The front ends are provided with a pressure plate. A preload spring is sleeved on the guide posts between the pressure plate and the fixed plate.

4. The steam generator internal frame machining and positioning device as described in claim 3, characterized in that: The machine base is provided with a limiting seat facing the fixed plate. The limiting seat has a limiting groove. The bottom surface of the fixed plate is provided with a limiting guide block, which is located in the limiting groove.

5. The steam generator internal frame machining and positioning device as described in claim 4, characterized in that: The machine tool is equipped with a base frame facing the top opening. A guide rod is inserted into the base frame, and the top of the guide rod is connected to the push plate. The base frame is also equipped with a push cylinder for driving the push plate to move up and down.

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