A heat exchanger tube processing clamp

Abstract

The utility model provides a kind of heat exchanger bushing processing fixture, the heat exchanger bushing processing fixture includes mounting bracket, first connecting rod and second connecting rod are provided in the mounting bracket, the lower part of the first connecting rod is connected with first clamping plate, the lower part of the second connecting rod is connected with second clamping plate, first fixed shaft is provided in the mounting bracket, the bottom connecting joint of the first connecting rod and the second connecting rod is rotatably connected on the first fixed shaft.First connecting rod, second connecting rod are rotatably connected by same first fixed shaft, form symmetrical lever structure, drive first, second clamping plate synchronous opening and closing, ensure that bushing two sides stress balance, avoid the deformation of bushing caused by traditional single clamping plate or asymmetric structure, especially suitable for thin-walled bushing processing.Connecting rod and mounting bracket are rotatably connected by fixed shaft, replace the loose structure of traditional bolt hinged, reduce the shaking or gap in clamping process, ensure clamping plate positioning accuracy, reduce processing error.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger sleeve processing, and specifically relates to a heat exchanger sleeve processing fixture. Background Technology

[0002] As a core component of heat exchangers, heat exchanger sleeves require precise positioning and stable clamping during processing to ensure machining accuracy and product quality. Currently, the clamps used for heat exchanger sleeve processing have several technical limitations: traditional clamps often employ single-plate or symmetrical bolt clamping structures, which can easily lead to sleeve deformation due to uneven force during clamping, affecting subsequent assembly sealing; some clamps have fixed clamping ranges, only suitable for single-specification sleeves, requiring frequent clamp changes when dealing with sleeves of different diameters and lengths, reducing processing efficiency and increasing tooling costs; furthermore, most manual clamps rely on manual adjustment of clamping force, which is cumbersome and has poor clamping stability, easily causing sleeve displacement due to vibration or external forces, resulting in machining errors. Utility Model Content

[0003] The main objective of this invention is to provide a heat exchanger sleeve processing fixture that features a stable structure, uniform clamping force, wide applicability, and convenient operation, thereby meeting the precision and efficiency requirements of diverse sleeve processing. To achieve the above objectives, this utility model provides a heat exchanger sleeve processing fixture, which includes a mounting frame. A first connecting rod and a second connecting rod are arranged inside the mounting frame. A first clamping plate is connected to the lower part of the first connecting rod, and a second clamping plate is connected to the lower part of the second connecting rod. A first fixed shaft is arranged inside the mounting frame, and the bottom connecting joints of the first connecting rod and the second connecting rod are rotatably connected to the first fixed shaft.

[0004] The heat exchanger sleeve processing fixture provided by this utility model features a first connecting rod and a second connecting rod rotatably connected via the same first fixed shaft, forming a symmetrical lever structure. This structure drives the first and second clamping plates to open and close synchronously, ensuring balanced force on both sides of the sleeve and avoiding sleeve deformation caused by traditional single clamping plates or asymmetrical structures. It is particularly suitable for processing thin-walled sleeves. The connecting rod and mounting bracket are rotatably connected via a fixed shaft, replacing the loose structure of traditional bolted hinges. This reduces wobbling or gaps during clamping, ensures the positioning accuracy of the clamping plates, and reduces processing errors.

[0005] In one possible implementation, both the first and second connecting rods are composed of three movable rods connected together. The three movable rods are hinged to form a foldable multi-segment structure, which can expand the opening and closing angle and displacement range of the clamp through relative rotation between the rods, adapting to heat exchanger sleeves of different diameters, improving the versatility of the clamp, and reducing the frequency of changeovers.

[0006] In one possible implementation, the top of the mounting bracket is provided with a drive shaft mounting hole, which is used to mount a drive shaft for vertical movement. The drive shaft can be connected to a power source such as a cylinder, hydraulic cylinder, or motor, and clamping is achieved by driving a linkage mechanism through vertical movement.

[0007] In one possible implementation, a connecting clamp is provided at the bottom end of the drive shaft, and a second fixed shaft is provided inside the connecting clamp. The top ends of the first connecting rod and the second connecting rod are rotatably connected to the second fixed shaft. The drive shaft connects the top ends of the two connecting rods simultaneously through the second fixed shaft, so that the up and down movement of the drive shaft can be synchronously transmitted to the two connecting rods, avoiding the offset of the clamping plate caused by the asynchronous driving force on both sides, and ensuring accurate positioning of the sleeve center.

[0008] In one possible implementation, the end of the first connecting rod is bent and fitted against the outer side of the first clamping plate and fixedly connected to the first clamping plate, and the end of the second connecting rod is bent and fitted against the outer side of the second clamping plate and fixedly connected to the second clamping plate. The contact area between the bent end and the outer side of the clamping plate is larger, and with welding or bolt fixing, the connection point breakage caused by traditional point connection can be avoided, thus improving the overall structural rigidity of the fixture. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a heat exchanger sleeve processing fixture provided by this utility model; Figure 2 This is a side view of a heat exchanger sleeve processing fixture provided by this utility model. Detailed Implementation

[0010] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0011] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0012] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0013] See attached diagram. Figure 1 and Figure 2 As shown in the figure, the heat exchanger sleeve processing fixture provided by this utility model includes a mounting frame 1. A first connecting rod 21 and a second connecting rod 22 are provided in the mounting frame 1. A first clamping plate 31 is provided below the first connecting rod 21 and a second clamping plate 32 is provided below the second connecting rod 22. A first fixed shaft 41 is provided in the mounting frame 1. The bottom connecting joints of the first connecting rod 21 and the second connecting rod 22 are rotatably connected to the first fixed shaft 41.

[0014] The heat exchanger sleeve processing fixture provided by this utility model has a first connecting rod 21 and a second connecting rod 22 rotatably connected by the same first fixed shaft 41, forming a symmetrical lever structure. This structure drives the first and second clamping plates 32 to open and close synchronously, ensuring balanced force on both sides of the sleeve and avoiding sleeve deformation caused by traditional single clamping plates or asymmetrical structures. It is especially suitable for processing thin-walled sleeves. The connecting rods are rotatably connected to the mounting bracket 1 via the fixed shaft, replacing the loose structure of traditional bolted hinges. This reduces shaking or gaps during clamping, ensures the positioning accuracy of the clamping plates, and reduces processing errors.

[0015] In one possible implementation, both the first connecting rod 21 and the second connecting rod 22 are composed of three movable rods connected together. The three movable rods are hinged to form a foldable multi-segment structure, which can expand the opening and closing angle and displacement range of the clamp through relative rotation between the rods, adapting to heat exchanger sleeves of different diameters, improving the versatility of the clamp, and reducing the frequency of changeovers.

[0016] In one possible implementation, the top of the mounting bracket 1 is provided with a drive shaft mounting hole 5, which is used to mount a drive shaft for vertical movement. The drive shaft can be connected to a power source such as a cylinder, hydraulic cylinder, or motor, and clamping is achieved by driving a linkage mechanism through vertical movement.

[0017] In one possible implementation, a connecting clip 6 is provided at the bottom end of the drive shaft, and a second fixed shaft 42 is provided inside the connecting clip 6. The top ends of the first connecting rod 21 and the second connecting rod 22 are rotatably connected to the second fixed shaft 42. The drive shaft connects the top ends of the two connecting rods simultaneously through the second fixed shaft 42, so that the up and down movement of the drive shaft can be synchronously transmitted to the two connecting rods, avoiding the offset of the clamping plate caused by the asynchronous driving force on both sides, and ensuring accurate positioning of the sleeve center.

[0018] In one possible implementation, the end of the first connecting rod 21 is bent and adhered to the outer side of the first clamping plate 31 and fixedly connected to the first clamping plate 31. The end of the second connecting rod 22 is bent and adhered to the outer side of the second clamping plate 32 and fixedly connected to the second clamping plate 32. The contact area between the bent end and the outer side of the clamping plate is larger. Combined with welding or bolt fixing, it can avoid the breakage at the connection point caused by traditional point connection and improve the overall structural rigidity of the fixture.

[0019] It is worth mentioning that those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixture for machining heat exchanger sleeves, characterized in that, The device includes a mounting frame, within which a first connecting rod and a second connecting rod are provided. A first clamping plate is connected to the lower part of the first connecting rod, and a second clamping plate is connected to the lower part of the second connecting rod. A first fixed shaft is provided within the mounting frame, and the bottom connecting joints of the first connecting rod and the second connecting rod are rotatably connected to the first fixed shaft.

2. The heat exchanger sleeve machining fixture according to claim 1, characterized in that, Both the first link and the second link are composed of three movable rods connected together.

3. The heat exchanger sleeve processing fixture according to claim 2, characterized in that, The top of the mounting bracket is provided with a drive shaft mounting hole, and the drive shaft for vertical movement is installed in the drive shaft mounting hole.

4. The heat exchanger sleeve processing fixture according to claim 3, characterized in that, The bottom end of the drive shaft is provided with a connecting clip, and a second fixed shaft is provided inside the connecting clip. The top ends of the first connecting rod and the second connecting rod are rotatably connected to the second fixed shaft.

5. The heat exchanger sleeve processing fixture according to claim 4, characterized in that, The end of the first connecting rod is bent and attached to the outer side of the first clamping plate and fixedly connected to the first clamping plate. The end of the second connecting rod is bent and attached to the outer side of the second clamping plate and fixedly connected to the second clamping plate.

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