Flange disassembly and assembly adjuster

Abstract

The utility model belongs to the technical field of pipeline disassembly and assembly tools, and particularly relates to a flange disassembly and assembly adjuster which comprises a positive and negative lead screw, a sliding block is screwed on each of positive and negative threads on the two sides of the positive and negative lead screw, the two sets of sliding blocks are located on the two sides of two flanges respectively, and corresponding pin holes are formed in the two sets of sliding blocks. The pin holes of the two groups of sliding blocks are connected in series with the bolt holes of the two flanges through ejector pins; an adjusting bolt hole is formed between the positive and negative threads on the two sides of the positive and negative lead screw, a jackscrew is screwed in the adjusting bolt hole through threads, and a pressing block for adjusting the positions of the two flanges is detachably connected to the lower portion of the jackscrew. The flange disassembly and assembly adjuster can simply and rapidly expand and combine two flanges, facilitates adding and taking of gaskets, meanwhile conducts deviation rectification on staggered flanges, is safe and reliable in operation, greatly reduces cost compared with a hydraulic type, and increases functions.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline disassembly and assembly tools, and in particular relates to a flange disassembly and assembly adjuster. Background Art

[0002] At present, there are flange spreaders on the market, including mechanical and hydraulic ones, which have a single function, and only separate the two flanges by a certain distance when the flange is disassembled. There is no adjustment of the error variable during installation and the opening and closing adjustment of the flange gap when the gasket is added. In addition, the hydraulic type has poor safety performance, high cost, and few mechanical functions. Therefore, a flange disassembly and assembly adjuster is needed to effectively solve the above problems. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide a flange disassembly and assembly adjuster, which can quickly and effectively disassemble and replace the flange gasket and achieve rapid centering, while avoiding some safety issues, such as the problem of the duck tongue of the hydraulic flange spreader breaking and injuring people.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a flange disassembly and assembly adjuster, including a forward and reverse screw, a slider is screwed on the forward and reverse threads on both sides of the forward and reverse screw, two groups of sliders are respectively located on both sides of the two flanges, corresponding pin holes are opened on the two groups of sliders, and the pin holes of the two groups of sliders are connected in series with the bolt holes of the two flanges through ejector pins; an adjusting bolt hole is arranged between the forward and reverse threads on both sides of the forward and reverse screw, a ejector screw is screwed on the inner thread of the adjusting bolt hole, and a pressure block for adjusting the position of the two flanges is detachably connected under the ejector screw.

[0005] Furthermore, the pressing block is provided with a tapered surface for separating the two flanges and an arc surface for aligning the two flanges.

[0006] Furthermore, one side of the pressing block forms a tapered surface that is wide at the top and narrow at the bottom, and the other side of the pressing block forms an arc surface that adapts to the outer peripheral surface of the flange. The pressing block is provided with connecting holes corresponding to the tapered surface and the arc surface and connected to the top screw.

[0007] Furthermore, there are two pressing blocks, including a pressing block provided with a tapered surface and a pressing block provided with an arc surface, and both pressing blocks are provided with connecting holes connected to the top screw.

[0008] Furthermore, the thread directions of the two groups of sliders are opposite and correspond to the positive and negative threads on both sides of the positive and negative screws. Each group of sliders includes a main slider and two support sliders. The main slider is screwed to the positive and negative screw threads, one end of the two support sliders is hinged to the main slider through a rivet shaft, and the other ends of the two support sliders are provided with pin holes corresponding to the bolt holes of the two flanges.

[0009] Furthermore, the pin holes of the two supporting sliders in each group of sliders correspond to the two adjacent bolt holes on the two flanges and are connected in series through two ejector pins.

[0010] Furthermore, a handle is provided at the upper end of the top screw, a retaining spring interface is provided at the lower end of the top screw, the middle is a full thread and matches the adjusting bolt hole thread of the forward and reverse screws, the pressure block is connected with the top screw through the retaining spring and the lifting of the pressure block is controlled by lifting the top screw.

[0011] Furthermore, one end of the ejector pin is configured as a conical end.

[0012] The beneficial effects of the utility model are as follows: the flange disassembly and assembly adjuster of the utility model can simply and quickly open and merge two flanges, facilitate the addition and removal of gaskets, and correct the misaligned flanges at the same time. The operation is safe and reliable, the cost is greatly reduced compared with the hydraulic type, and the functions are increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the flange disassembly and adjustment device of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of a pressing block (having a conical surface and a curved surface);

[0015] Figure 3 for Figure 2 A top view of

[0016] Figure 4 It is a schematic diagram of the slider structure;

[0017] In the figure: 1. top screw, 2. slider, 2.1 main slider, 2.2 supporting slider, 2.3 pin hole, 3. positive and negative screws, 4. ejector pin, 5. pressure block, 5.1 cone angle surface, 5.2 arc surface, 5.3 connecting hole, 6. flange. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] See attached Figure 1-4A flange disassembly and assembly adjuster comprises a forward and reverse screw 3, a slider 2 is screwed on the forward and reverse threads on both sides of the forward and reverse screw 3, two groups of sliders 2 are respectively located on both sides of two flanges 6, corresponding pin holes 2.3 are opened on the two groups of sliders 2, and the pin holes 2.3 of the two groups of sliders are connected in series with the bolt holes of the two flanges through ejector pins 4; an adjusting bolt hole is arranged between the forward and reverse threads on both sides of the forward and reverse screw 3, a ejector screw 1 is screwed on the inner thread of the adjusting bolt hole, and a pressure block 5 for adjusting the position of the two flanges is detachably connected to the bottom of the ejector screw 1.

[0020] Furthermore, the pressing block 5 is provided with a conical surface 5.1 for separating the two flanges and an arc surface 5.2 for aligning the two flanges.

[0021] Furthermore, one side of the pressing block 5 forms a tapered surface 5.1 which is wide at the top and narrow at the bottom, and the other side of the pressing block forms an arcuate surface 5.2 adapted to the outer peripheral surface of the flange, and the pressing block is provided with a connecting hole 5.3 connected to the top screw 1 corresponding to the tapered surface 5.1 and the arcuate surface 5.2.

[0022] Furthermore, there are two pressing blocks 5, including a pressing block provided with a tapered surface 5.1 and a pressing block provided with an arc surface 5.2, and both pressing blocks are provided with a connecting hole 5.3 connected with a top screw.

[0023] Furthermore, the thread directions of the two groups of sliders 2 are opposite and correspond to the positive and negative threads on both sides of the positive and negative screws. Each group of sliders includes a main slider 2.1 and two supporting sliders 2.2. The main slider 2.1 is threadedly screwed to the positive and negative screws 3. One end of the two supporting sliders 2.2 is hinged to the main slider 2.1 through a rivet shaft, and the other ends of the two supporting sliders 2.2 are provided with pin holes 2.3 corresponding to the bolt holes of the two flanges.

[0024] Furthermore, the pin holes 2.3 of the two supporting sliders in each group of sliders 2 correspond to the two adjacent bolt holes on the two flanges and are connected in series through two ejector pins 4 respectively.

[0025] Furthermore, a handle is provided at the upper end of the top screw 1, a retaining spring interface is provided at the lower end of the top screw 1, the middle is fully threaded and matches the adjusting bolt hole thread of the forward and reverse screws 3, the pressure block 5 is connected with the top screw through the retaining spring, and the lifting and lowering of the pressure block 5 is controlled by the lifting and lowering of the top screw 1.

[0026] Furthermore, one end of the ejector pin 4 is configured as a conical end.

[0027] Based on the above technical solution, the device is mainly composed of a top screw 1, two sets of sliders 2, positive and negative lead screws 3, a pin 4 and a pressure block 5, which can complete the free opening and closing of the flange gap and the adjustment of the table variable. One end of the top screw 1 is a handle, the other end is a retaining spring interface, and the middle is a full thread that matches the middle hole thread of the positive and negative lead screws 3. The lifting and lowering of the pressure block 5 is controlled by the lifting and lowering of the top screw 1. The thread directions of the two sets of sliders 2 are opposite to each other and correspond to the threads at both ends of the positive and negative lead screws 3. The flange gap is adjusted by rotating the lead screw 3; the single set of sliders 2 is composed of a main slider 2.1 and two supporting sliders 2.2. The main slider 2.1 is connected to the positive and negative lead screws 3 with threads, and the supporting slider 2.2 is connected to the main slider 2.1 through a rivet shaft. When in use, the other ends of the two supporting sliders 2.2 are respectively connected to the two adjacent bolt holes of the flange through the pin 4. A threaded hole is arranged in the middle of the forward and reverse screws 3 to cooperate with the top screw 1 to realize the lifting and lowering of the pressure block 5. There are forward and reverse through screws at both ends to cooperate with the threads of the main slider 2.1. One end is milled with a square drive to facilitate rotational drive. One end of the ejector pin 4 is designed to be conical, which is convenient for adjusting the initial misalignment of the two flanges. The pressure block 5 is connected to the top screw 1 through a retaining spring, which is convenient for replacing the interface to achieve different functions; when the pressure block conical surface 5.1 is aligned with the flange sealing surface to eject, the flange 6 can be opened; when the pressure block arc surface 5.2 is aligned with the two flange sides, the flange misalignment can be reduced.

[0028] The method of using the flange disassembly and assembly adjuster of the utility model is as follows: firstly, adjust the positions of the two sliders on the positive and negative lead screws, then place the two sliders 2 on both sides of the two flanges 6, limit the spacing between the two flanges 6 by the spacing between the two sliders 2, then remove the flange connection bolts between the two flanges, first remove the two adjacent flange connection bolts corresponding to the support sliders, then connect the pin holes of the two support sliders and the connection bolt holes of the two flanges in series through the ejector pin 4, limit the circumferential relative displacement and radial relative displacement of the two flanges, and then remove all the remaining flange connection bolts. Then, the top screw 1 is assembled in the adjusting bolt hole in the middle of the forward and reverse screw 3, and the pressure block 5 is installed at the bottom of the top screw 1, so that the cone angle surface 5.1 of the pressure block faces downward, and the sharp corner of the cone angle surface 5.1 is located at the flange sealing surface between the two flanges 6. The pressure block 5 is pressed down by rotating the top screw 1, and the two flanges are separated by the cone angle surface 5.1. The distance between the two flanges is limited by the slider 2. Since the slider 2 is threadedly connected with the forward and reverse screw 3, the forward and reverse screw 3 cannot be rotated due to the assembly of the top screw 1, and the slider 2 cannot be rotated due to the assembly of the ejector pin 4. Therefore, the position of the slider 2 is fixed, which can ensure that the two flanges will not be displaced over a long distance. At the same time, when the two flanges are separated, they will move along the ejector pin to ensure that the two flanges 6 will not be greatly offset in the circumferential and radial positions. After the two flanges are separated, the flange gasket is replaced, and the top screw 1 is rotated upward to re-join the two flanges. Then replace the pressing block or the pressing block working surface so that the arc surface 5.2 of the pressing block faces downward, and press the pressing block 5 downward by rotating the ejector screw 1, and press the arc surface 5.2 on the outer circumferential surfaces of the two flanges to align the two flanges and coincide the axes, and then connect the two flanges with the flange connecting bolts, pull out the ejector pin 4, and assemble the flange connecting bolts corresponding to the ejector pin.

[0029] The tooling of the utility model can be manufactured in a factory and used on site. It can be designed in sections according to the flange standard. Each adjustment device has a fixed adaptation range and cannot be infinitely expanded. When the flange diameter is large, multiple devices can be used simultaneously to achieve better results.

[0030] It should be noted that the parts not described in detail in the present invention are prior art.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A flange disassembly and adjustment device, characterized in that: It includes a forward and reverse screw, and a slider is screwed on the forward and reverse threads on both sides of the forward and reverse screw, respectively. The two groups of sliders are respectively located on both sides of the two flanges. The two groups of sliders are provided with corresponding pin holes, and the pin holes of the two groups of sliders are connected in series with the bolt holes of the two flanges through ejector pins; an adjusting bolt hole is provided between the forward and reverse threads on both sides of the forward and reverse screw, and a ejector screw is screwed on the inner thread of the adjusting bolt hole, and a pressure block for adjusting the position of the two flanges is detachably connected under the ejector screw.

2. A flange disassembly and adjustment device according to claim 1, characterized in that: The pressing block is provided with a conical surface for separating the two flanges and an arc surface for aligning the two flanges.

3. A flange disassembly and adjustment device according to claim 1 or 2, characterized in that: One side of the pressing block forms a tapered surface that is wide at the top and narrow at the bottom, and the other side of the pressing block forms an arc surface that adapts to the outer peripheral surface of the flange. The pressing block is provided with connecting holes corresponding to the tapered surface and the arc surface and connected to the top screw.

4. A flange disassembly and adjustment device according to claim 1 or 2, characterized in that: There are two pressing blocks, including a pressing block provided with a conical surface and a pressing block provided with an arc surface. Both pressing blocks are provided with connecting holes connected with the top screw.

5. The flange disassembly and adjustment device according to claim 1, characterized in that: The thread directions of the two groups of sliders are opposite and correspond to the positive and negative threads on both sides of the positive and negative screws. Each group of sliders includes a main slider and two supporting sliders. The main slider is screwed to the positive and negative screw threads. One end of the two supporting sliders is hinged to the main slider through a rivet shaft, and the other ends of the two supporting sliders are provided with pin holes corresponding to the bolt holes of the two flanges.

6. The flange disassembly and adjustment device according to claim 5, characterized in that: The pin holes of the two supporting sliders in each group of sliders correspond to the two adjacent bolt holes on the two flanges and are connected in series through two ejector pins.

7. The flange disassembly and adjustment device according to claim 1, characterized in that: The upper end of the top screw is provided with a handle, the lower end of the top screw is a retaining spring interface, the middle is a full thread and matches the adjusting bolt hole thread of the forward and reverse screws, the pressure block is connected with the top screw through the retaining spring and the lifting of the pressure block is controlled by the lifting of the top screw.

8. The flange disassembly and adjustment device according to claim 1, characterized in that: One end of the ejector pin is arranged as a conical end.

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