CN114260684A - Method for disassembling oil leakage fault half coupling - Google Patents
Method for disassembling oil leakage fault half coupling Download PDFInfo
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- CN114260684A CN114260684A CN202111609398.5A CN202111609398A CN114260684A CN 114260684 A CN114260684 A CN 114260684A CN 202111609398 A CN202111609398 A CN 202111609398A CN 114260684 A CN114260684 A CN 114260684A
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- half coupling
- coupling
- clamping tool
- oil leakage
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Abstract
The invention discloses a method for disassembling a half coupling with oil leakage fault, which comprises the steps of sleeving and clamping a tool on the outer side of an oil leakage position of the half coupling, and applying pressure larger than or equal to a preset pressure value to the half coupling by using a high-pressure pump so as to disassemble the half coupling. Therefore, the method can still dismount the half coupling under the condition that oil leaks from the inner hole of the dismounted half coupling, and cannot cause bending of the main shaft or damage to the half coupling.
Description
Technical Field
The invention relates to the technical field of shaft coupling disassembly, in particular to a method for disassembling a half coupling with an oil leakage fault.
Background
The coupling is a connecting device for transmitting torque and generally comprises a half coupling, a sheath and an intermediate sleeve. Common assembly methods for the coupling parts are heat assembly and hydraulic assembly. The method for hydraulically disassembling the half coupling comprises the steps of pushing a low-pressure pump to pressurize until a piston is in contact with the end face of the half coupling, continuing to pressurize until the pressure of the low-pressure pump is 7-14 bar, then slowly pressurizing a high-pressure pump, and when the pressure of the low-pressure pump is increased, releasing pressure of the low-pressure pump, but keeping the pressure of the high-pressure pump above 350bar until the pressure of the low-pressure pump is reduced to 0.
However, in the process of disassembling the half coupling, the oil leakage phenomenon of the inner hole deformation conical surface of the half coupling is easy to occur, so that the pressure of the high-pressure pump cannot be continuously increased, the half coupling cannot be disassembled, and if the half coupling is continuously disassembled in a heating and machining mode, the main shaft can be bent or the half coupling can be damaged.
Disclosure of Invention
The embodiment of the invention provides a method for disassembling a half coupling with an oil leakage fault, which can or at least can solve the problem that after an inner hole of the half coupling deforms and a conical surface leaks oil, the pressure of a high-pressure pump cannot be continuously increased, so that the half coupling cannot be disassembled, and if the half coupling is continuously disassembled in a heating and machining mode, the problems of main shaft bending or half coupling damage and the like can be caused.
The invention provides a method for disassembling a half coupling with an oil leakage fault, which comprises the following steps:
sleeving and clamping tools on the outer side of the oil leakage position of the half coupling;
and applying pressure which is greater than or equal to a preset pressure value to the coupling half by using a high-pressure pump so that the coupling half can be detached.
Optionally, the outer side of the oil leakage position of the half coupling is sleeved with a clamping tool, and the clamping tool comprises:
under the condition that oil leaks from an area, close to a first end, of an inner hole of the half coupling, obtaining an interference value of a clamping tool according to the thickness of the clamping tool and a critical hydraulic value of the coupling, wherein the first end is the end, far away from a shaft neck, of the half coupling;
and according to the interference value, sleeving the clamping tool on the outer side of the first end.
Optionally, the outer side of the oil leakage position of the half coupling is sleeved with a clamping tool, and the clamping tool comprises:
under the condition that oil leaks from an area, close to a second end, of an inner hole of the half coupling, obtaining an interference value of a clamping tool according to the thickness of the clamping tool and a critical hydraulic value of the coupling, wherein the second end is one end, close to a shaft neck, of the half coupling;
and according to the interference value, sleeving the clamping tool on the outer side of the second end.
According to the method for disassembling the half coupling with the oil leakage fault, provided by the embodiment of the invention, firstly, a clamping tool is sleeved on the outer side of the oil leakage position of the half coupling, and then, a high-pressure pump is utilized to apply pressure which is greater than or equal to a preset pressure value to the half coupling, so that the half coupling can be disassembled. Therefore, the method can still dismount the half coupling under the condition that oil leaks from the inner hole of the dismounted half coupling, and cannot cause bending of the main shaft or damage to the half coupling.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a structural diagram of a clamping tool according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a clamping tool sleeved at a first end of a half coupling;
fig. 3 is a structural diagram of a clamping tool according to another embodiment of the present invention;
fig. 4 is a schematic structural view of the clamping tool sleeved at the second end of the half coupling.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
According to the following formula, the critical pressure value of the coupling can be calculated,
b2 is coupling interference; b3 is an initial hydraulic value, and 100Mpa is taken; b4 is the radius of the inner hole of the coupler; b5 is the radius of the outer hole of the coupler, B6 is the Poisson ratio of the material of the flange of the coupler; b7 is the elastic modulus of the coupling flange material, and is 200000 Mpa; and P is the critical pressure value of the coupling.
When the hydraulic coupling half 1 is disassembled, the inner hole of the coupling half 1 can be expanded only when the pressure value of the high-pressure pump is larger than the critical pressure value of the coupling, so that the coupling half 1 is disassembled smoothly.
Illustratively, the outer circle radius of the half coupling 1 is 0.05m, the inner hole radius of the half coupling 1 is 0.0329m, the interference value is 2.5 per thousand, the initial hydraulic pressure is given as 100Mpa, the poisson ratio is 0.3, the elastic modulus of the flange material of the half coupling 1 is 200000Mpa, and the pressure of the high-pressure pump which needs to be greater than 142Mpa is calculated according to the formula, so that the inner hole of the half coupling 1 is expanded, and the half coupling 1 is detached.
The invention provides a method for disassembling a half coupling 1 with an oil leakage fault, which comprises the following steps:
step S101: and a clamping tool 2 is sleeved outside the oil leakage position of the half coupling 1.
The clamping tool 2 plays a role in expanding the inner hole of the half coupling 1 and preventing oil leakage.
Step S102: a pressure greater than or equal to a preset pressure value is applied to the coupling half 1 by a high-pressure pump so that the coupling half 1 can be removed.
The preset pressure value can be set by a worker according to actual conditions, and strict requirements are not made in the embodiment. After the inner holes of the half couplings 1 are expanded simultaneously, the clamping tool 2 can be detached.
According to the method for disassembling the half coupling 1 with the oil leakage fault, provided by the embodiment of the invention, firstly, a clamping tool 2 is sleeved on the outer side of the oil leakage position of the half coupling 1, and then, a high-pressure pump is utilized to apply pressure which is greater than or equal to a preset pressure value to the half coupling 1, so that the half coupling 1 can be disassembled. Therefore, the method can still dismount the half coupling 1 under the condition that oil leaks from the inner hole of the dismounted half coupling 1, and the bending of the main shaft or the damage to the half coupling 1 cannot be caused.
Step S101 of the above embodiment includes different steps for different oil leakage locations.
In the first case: at the outer side of the oil leakage position of the coupling part 1, the step S101 specifically includes:
step S201: and under the condition that oil leaks from the area of the inner hole of the half coupling 1 close to the first end, obtaining the interference value of the clamping tool 2 according to the thickness of the clamping tool 2 and the critical hydraulic value of the coupling, wherein the first end is the end of the half coupling 1 far away from the shaft neck 3.
Specifically, the interference value of the clamping tool 2 can be calculated according to the following formula,
wherein M is an interference value of the clamping tool 2; b3 is an initial hydraulic value, and 100Mpa is taken; b4 is the radius of the inner hole of the coupler; p, B11 and B13 are calculated by the following equations (1), (2) and (3).
Illustratively, the outer circle size of the clamping tool 2 is 0.07m, the inner hole radius of the half coupling 1 is 0.0329m, the initial hydraulic pressure given value is 100Mpa, the critical hydraulic pressure value of the half coupling 1 is 142Mpa, the Poisson ratio is 0.3, the elastic modulus is 200000Mpa, and the interference value of the tool sleeve is 1.82 per thousand calculated according to a formula.
Step S202: and sleeving the clamping tool 2 at the outer side of the first end according to the interference value.
Specifically, as shown in fig. 1, under the condition that oil leaks in an area, close to the first end, of an inner hole of the half coupling 1, the clamping tool 2 is of an annular structure, and as shown in fig. 2, when oil leaks at the position a, the clamping tool 2 is directly sleeved on the outer side of the position a, the calculated interference value is reached, then a high-pressure pump is used for applying pressure, which is greater than or equal to a preset pressure value, to the half coupling 1, and the clamping tool 2 is matched to expand the inner hole of the half coupling 1 and prevent oil leakage, so that the half coupling 1 can be dismounted. In addition, after the inner holes of the half couplings 1 are simultaneously expanded, the clamping tool 2 can be detached.
In the second case: at the outer side of the oil leakage position of the coupling part 1, the step S101 specifically includes:
step S301: and under the condition that oil leaks from the area of the inner hole of the half coupling 1 close to the second end, obtaining the interference value of the clamping tool 2 according to the thickness of the clamping tool 2 and the critical hydraulic value of the coupling, wherein the second end is the end of the half coupling 1 close to the shaft neck 3.
The formula for calculating the interference value of the specific clamping tool 2 can be referred to as formula (4), and details are not repeated here.
Step S302: and sleeving the clamping tool 2 at the outer side of the second end according to the interference value.
As shown in fig. 3, in the case of oil leakage in the region of the inner hole of the coupling half 1 near the second end, the clamping tool 2 has a hoop structure, that is, includes two semicircular structures 201, and the two semicircular structures 201 are assembled together by bolts 202, wherein the middle parts of the outer walls of the two semicircular structures 201 are vertical walls. And as shown in fig. 4, when oil leaks at the position B, the two semicircular structures 201 are sleeved on the outer side of the position B, the two semicircular structures 201 are connected through the bolts 202, and then the bolts 202 are tightened to achieve the calculated interference value. After the clamping tool is assembled, pressure which is larger than or equal to a preset pressure value is applied to the half coupling by using the high-pressure pump, and the clamping tool 2 is matched, so that an inner hole of the half coupling 1 is expanded simultaneously and oil leakage is prevented, and the half coupling 1 can be detached. In addition, after the inner holes of the half couplings 1 are simultaneously expanded, the clamping tool 2 can be detached.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. A method for disassembling a half coupling with oil leakage fault is characterized by comprising the following steps:
sleeving and clamping tools on the outer side of the oil leakage position of the half coupling;
and applying pressure which is greater than or equal to a preset pressure value to the coupling half by using a high-pressure pump so that the coupling half can be detached.
2. The method according to claim 1, wherein the sleeving and clamping tool is arranged on the outer side of the oil leakage position of the half coupling, and comprises the following steps:
under the condition that oil leaks from an area, close to a first end, of an inner hole of the half coupling, obtaining an interference value of a clamping tool according to the thickness of the clamping tool and a critical hydraulic value of the coupling, wherein the first end is the end, far away from a shaft neck, of the half coupling;
and according to the interference value, sleeving the clamping tool on the outer side of the first end.
3. The method according to claim 1, wherein the sleeving and clamping tool is arranged on the outer side of the oil leakage position of the half coupling, and comprises the following steps:
under the condition that oil leaks from an area, close to a second end, of an inner hole of the half coupling, obtaining an interference value of a clamping tool according to the thickness of the clamping tool and a critical hydraulic value of the coupling, wherein the second end is one end, close to a shaft neck, of the half coupling;
and according to the interference value, sleeving the clamping tool on the outer side of the second end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111609398.5A CN114260684B (en) | 2021-12-27 | 2021-12-27 | Method for disassembling oil leakage fault half coupling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111609398.5A CN114260684B (en) | 2021-12-27 | 2021-12-27 | Method for disassembling oil leakage fault half coupling |
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