Hydraulic flange gap expander

Abstract

The utility model relates to the technical field of flange disassembly and assembly, in particular to a hydraulic flange gap expander which comprises a hydraulic jack, a stress lead screw, a connecting polish rod, a connecting plate, an expanding plate and an adjusting nut. The two stress lead screws are arranged in a spaced mode and are arranged in parallel relative to the connecting polished rod, external threads are arranged on the stress lead screws, and the two adjusting nuts are arranged at the ends of the stress lead screws in a sleeving mode respectively; the two connecting plates are located on the inner side of the stress lead screw, one end of each connecting plate is fixedly connected to the end of the stress lead screw, and the other end of each connecting plate is arranged on the connecting polished rod in a sleeving mode. The two opening plates are arranged in one-to-one correspondence with the adjusting nuts, one ends of the opening plates are connected to the adjusting nuts, and the other ends of the opening plates are arranged on the connecting polished rods in a sleeving manner; a jacking part of the hydraulic jack is arranged between the two connecting plates, and when the hydraulic jack is pressed, the connecting plates can be pushed to drive the opening plates to move towards the outer side. Therefore, the problem that equipment such as a current valve is inconvenient to disassemble and assemble is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange disassembly and assembly, and in particular to a hydraulic flange gap expander. Background Art

[0002] The existing hydraulic flange expander uses hydraulic pressure to drive the opening and closing of the integral wedge-shaped jaws to separate the flanges to create a gap, so as to facilitate the maintenance of the flange surface or the replacement of the gasket. However, the disadvantage of the existing technology is that it can only separate the two flanges that are close to each other on one side of a valve or other equipment to repair the flange surface or replace the gasket, but cannot separate the outer flanges at both ends of the valve or flow meter, which makes it inconvenient to disassemble and install the valve and other equipment as a whole. Therefore, it is necessary to provide a more reasonable technical solution to solve the current technical problems. Utility Model Content

[0003] The utility model aims to provide a hydraulic flange gap expander to solve the problem of inconvenient operation when disassembling and assembling equipment such as valves.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a hydraulic flange gap expander, including a hydraulic jack, a force-bearing screw rod, a connecting rod, a connecting plate, a spreading plate and an adjusting nut;

[0005] The force-bearing screw rods are provided in two pieces arranged at intervals and arranged in parallel with the connecting rod. The force-bearing screw rods are provided with external threads adapted to the adjusting nuts. The adjusting nuts are provided in two pieces and are respectively sleeved on the ends of the force-bearing screw rods.

[0006] The connecting plates are provided in two pieces and are located on the inner side of the force-bearing screw rod, one end of each connecting plate is fixedly connected to the end of the force-bearing screw rod, and the other end is sleeved on the connecting polished rod;

[0007] The two support plates are provided and are arranged one-to-one with the adjusting nuts, wherein one end of the support plate is connected to the adjusting nut, and the other end is sleeved on the connecting rod;

[0008] The lifting part of the hydraulic jack is arranged between two connecting plates. When the hydraulic jack is pressed, it can push the connecting plates to drive the expansion plates to move toward the outside.

[0009] Optionally, it further comprises a limiting cylinder, wherein two limiting cylinders are provided and fixedly disposed at the end of the connecting polished rod.

[0010] Optionally, the hydraulic jack includes a hydraulic pump, a connecting hose and a jack, one end of the connecting hose is connected to the outlet end of the hydraulic pump, and the other end is connected to the jack.

[0011] Optionally, the force-bearing screw rod and the connecting polished rod are both made of stainless steel.

[0012] When using the hydraulic flange gap expander, first adjust the distance between the two expansion plates according to the distance between the outer flanges on both sides of the valve or other equipment to be expanded, so that they can be placed in the flange gaps on both sides. The adjustment of the expansion plates on both sides is achieved by adjusting the adjusting nuts on the two force-bearing screws. Put the expansion plates on both sides into the flange gaps at both ends, press the hydraulic jack, so that the jacking part (i.e., the jack) acts on the two force-bearing screws and expands outward. In this case, the expansion plates move to both sides together, thereby expanding the outer flanges of valves and other equipment. In this way, the valve can be easily disassembled and installed, solving the problem of inconvenient disassembly and assembly of current valves and other equipment.

[0013] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic structural diagram of the hydraulic flange gap expander proposed in the utility model in one embodiment, wherein the hydraulic jack is a prior art product and only a partial structure of the hydraulic jack is schematically shown.

[0016] Description of Reference Numerals

[0017] 1-Hydraulic jack, 2-Forced screw rod, 3-Connecting rod, 4-Connecting plate, 5-Spreading plate, 6-Adjusting nut, 7-Limiting cylinder. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0019] According to a specific embodiment of the present disclosure, a hydraulic flange gap expander is provided. Figure 1 One specific embodiment is shown.

[0020] See also Figure 1As shown, the hydraulic flange gap expander includes: a hydraulic jack 1, a force screw 2, a connecting rod 3, a connecting plate 4, a spread plate 5 and an adjusting nut 6; the force screw 2 is provided with two spaced apart and arranged in parallel with the connecting rod 3, the force screw 2 is provided with an external thread adapted to the adjusting nut 6, the adjusting nut 6 is provided with two and respectively sleeved on the end of the force screw 2; the connecting plate 4 is provided with two and located on the inner side of the force screw 2, one end of each connecting plate 4 is fixedly connected to the end of the force screw 2, and the other end is sleeved on the connecting rod 3; the spread plate 5 is provided with two and arranged one-to-one with the adjusting nut 6, wherein one end of the spread plate 5 is connected to the adjusting nut 6, and the other end is sleeved on the connecting rod 3. The lifting part of the hydraulic jack 1 is arranged between the two connecting plates 4, and when the hydraulic jack 1 is pressed, the connecting plate 4 can be pushed to drive the spread plate 5 to move outward.

[0021] When the hydraulic flange gap expander is used, the spacing between the two expansion plates 5 is adjusted according to the spacing between the outer flanges on both sides of the valve or other equipment to be expanded, so that the expansion plates 5 can be placed in the flange gaps on both sides. The expansion plates 5 on both sides are adjusted by adjusting the adjusting nuts 6 on the two force-bearing screw rods 2. The expansion plates 5 on both sides are placed in the flange gaps at both ends, and the hydraulic jack 1 is pressed to make the jacking part (i.e., the jack) act on the two force-bearing screw rods 2 and expand outward. In this case, the expansion plates 5 move to both sides together, thereby expanding the outer flanges of the valve or other equipment. In this way, the valve can be easily disassembled and installed, solving the problem of inconvenient disassembly and assembly of current valves and other equipment.

[0022] In the actual operation process, in order to ensure uniform force, two sets of expanders provided by the present invention can be used for operation, so that the flange can be symmetrically stressed and the operation is safer.

[0023] It should be noted that the hydraulic jack 1 in the present disclosure is a manual hydraulic jack in the prior art. In other embodiments, it can also be configured as an electric hydraulic jack or a pneumatic hydraulic jack. To this end, those skilled in the art can flexibly set it according to actual needs.

[0024] In an embodiment provided by the present disclosure, the hydraulic flange gap expander further includes a limiting cylinder 7, which is provided in two and fixedly arranged at the end of the connecting polished rod 3. This arrangement can limit the movement range of the support plate, thereby preventing it from coming off the connecting polished rod 3.

[0025] In an embodiment provided by the present disclosure, the hydraulic jack 1 includes a hydraulic pump, a connecting hose and a jack, one end of the connecting hose is connected to the outlet end of the hydraulic pump, and the other end is connected to the jack. In this way, the hydraulic pump can be manually operated, and the action can be adjusted while observing the disassembly and assembly of the flange, which has good flexibility and practicality.

[0026] In the present disclosure, the material of the force-bearing screw rod 2 and the connecting polished rod 3 are both stainless steel. In this way, the force-bearing screw rod 2 and the connecting polished rod 3 can have the characteristics of high strength, good wear resistance and corrosion resistance.

[0027] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

Claims

1. A hydraulic flange gap expander, characterized in that: It includes a hydraulic jack, a force bearing screw rod, a connecting rod, a connecting plate, a spreading plate and an adjusting nut; The force-bearing screw rods are provided in two pieces arranged at intervals and arranged in parallel with the connecting rod. The force-bearing screw rods are provided with external threads adapted to the adjusting nuts. The adjusting nuts are provided in two pieces and are respectively sleeved on the ends of the force-bearing screw rods. The connecting plates are provided in two pieces and are located on the inner side of the force-bearing screw rod. One end of each connecting plate is fixedly connected to the end of the force-bearing screw rod, and the other end is sleeved on the connecting polished rod. The two support plates are provided and are arranged one by one with the adjusting nuts, wherein one end of the support plate is connected to the adjusting nut, and the other end is sleeved on the connecting rod; The lifting part of the hydraulic jack is arranged between two connecting plates. When the hydraulic jack is pressed, it can push the connecting plates to drive the expansion plates to move toward the outside.

2. The hydraulic flange gap expander according to claim 1, characterized in that: The hydraulic flange gap expander also includes a limiting cylinder, and the limiting cylinder is configured in two and fixedly arranged at the end of the connecting polished rod.

3. The hydraulic flange gap expander according to claim 1, characterized in that: The hydraulic jack comprises a hydraulic pump, a connecting hose and a jack, one end of the connecting hose is connected to the outlet end of the hydraulic pump, and the other end is connected to the jack.

4. The hydraulic flange gap expander according to claim 1, characterized in that: The materials of the force-bearing screw rod and the connecting polished rod are both stainless steel.

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