Dismantling tool for machine pump coupler

Abstract

The utility model belongs to the field of electromechanical equipment maintenance, and particularly relates to a dismantling tool for a pump coupler. Comprising a clamping assembly which comprises a left clamping piece and a right clamping piece which are in butt joint with each other and is arranged above a coupling flange plate; the ejection assembly is located below the clamping assembly and comprises a bottom plate, an ejection rod is arranged in the center of the bottom plate, and the ejection rod is located below the pump shaft connected with the coupler; a plurality of first threaded holes are evenly distributed in the bottom plate, and second threaded holes are distributed in the left clamping piece and the right clamping piece respectively. A lead screw sequentially penetrates through the first threaded hole, a threaded hole in a flange plate of the coupler and the second threaded hole which correspond to one another, a first bolt is arranged at the position, below the first threaded hole, of the lead screw, and a second bolt is arranged at the position, above the second threaded hole, of the lead screw. The dismounting tool is simple in structure, adopts a mechanical dismounting scheme to dismount the coupler, avoids thermal dismounting, meets the operation requirements of fireproof and explosion-proof areas, and is safe and high in working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electromechanical equipment maintenance, especially relate to a machine pump shaft coupling's removal frock. BACKGROUND

[0002] When the circulating water plant is in the circulating water pump maintenance, often needs to dismount and install the shaft coupling. The shaft coupling is as the important part of connecting the pump body and the driving motor, and its dismounting operation is important to the normal operation of the water pump. According to the circulating water pump factory guidance, the dismounting method of the shaft coupling is recommended to use the hot dismounting hot installation technology, uses the heating mode to make the matching part of the shaft coupling expand, to make the dismounting operation more simple and fast.

[0003] However, the actual working environment of the circulating water plant water pump is often located in the area with fire and explosion prevention requirements. In this special environment, using oxyacetylene flame to heat the shaft coupling has certain safety hazards, and may cause fire or explosion accidents, especially in the presence of flammable and explosive gases. Therefore, the traditional oxyacetylene heating method is not suitable for such special environment, which brings great challenge to the dismounting work of the shaft coupling.

[0004] At present, for the dismounting operation in this special environment, it is urgent to develop a shaft coupling dismounting device that can ensure operation safety and meet technical requirements, which is of great significance to improve the maintenance efficiency of the circulating water pump, ensure the normal operation of the equipment and protect the safety of the working environment. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a machine pump shaft coupling's removal frock that operation is safe and work efficiency is high.

[0006] The utility model provides a machine pump shaft coupling's removal frock, including,

[0007] The clamping assembly includes a left clamping piece and a right clamping piece that are butted against each other, and the left clamping piece and the right clamping piece are coplanar after being butted against each other and are arranged above the flange plate of the shaft coupling.

[0008] The ejecting assembly is located below the clamping assembly and includes a bottom plate, and the center of the bottom plate is provided with a top rod, and the top rod is located below the pump shaft connected with the shaft coupling.

[0009] A plurality of first threaded holes are uniformly distributed on the bottom plate, and second threaded holes are respectively distributed on the left clamping piece and the right clamping piece, and the positions of the first threaded holes correspond to the positions of the second threaded holes.

[0010] The lead screw passes through the first threaded hole, the threaded hole on the flange plate of the coupling and the second threaded hole in sequence, the position of the lead screw below the first threaded hole is provided with a first bolt, and the position of the lead screw above the second threaded hole is provided with a second bolt;

[0011] The first bolt is fastened, the bottom plate moves along the lead screw to the direction close to the coupling, the top rod applies upward thrust to the pump shaft, the coupling is subjected to downward pressure in the opposite direction of the clamping assembly, and the coupling is removed.

[0012] In the technical scheme, the dismounting tool structure is simple, the coupling is removed by using a mechanical dismounting scheme, heat dismounting is avoided, the operation requirements of a fireproof and explosion-proof area are met, safety is high, and work efficiency is high.

[0013] In some embodiments, a thrust bearing is arranged between the first bolt and the bottom plate, so that friction caused by extrusion when the first bolt is fastened can be reduced, and the labor intensity of an operator can be reduced.

[0014] In some embodiments, the left clamping piece and the right clamping piece are in a semicircular ring structure, the radius of an inner circle formed after the left clamping piece and the right clamping piece are butted is greater than or equal to the outer diameter of the coupling and less than the outer diameter of the flange plate of the coupling, so that the left clamping piece and the right clamping piece always apply downward pressure to the flange plate during the dismounting of the coupling, and the coupling is pulled downward to be separated from the pump shaft.

[0015] In some embodiments, the plane where the clamping assembly is located is parallel to the plane where the bottom plate is located, and both planes are parallel to the plane where the flange plate of the coupling is located, so that the coupling is prevented from being deviated during the dismounting, and the coupling or related devices are prevented from being damaged.

[0016] In some embodiments, the positions of the first threaded hole and the second threaded hole correspond to the position of the threaded hole on the flange plate of the coupling, so that the lead screw can smoothly pass through the clamping assembly, the flange plate of the coupling and the bottom plate.

[0017] In some embodiments, the top rod is coaxially arranged with the pump shaft, so that the thrust of the top rod to the pump shaft is in the direction of the central axis of the pump shaft, the counter pressure of the left clamping piece and the right clamping piece is balanced, and the coupling is prevented from being deviated during the dismounting.

[0018] In some embodiments, the first bolts are fastened synchronously and at the same angle, so that the coupling is prevented from being deviated due to inconsistent fastening processes of the first bolts, and the coupling or related devices are prevented from being damaged.

[0019] In some embodiments, a gasket is arranged between the second bolt and the flange plate of the coupling, and a gasket is arranged between the thrust bearing and the bottom plate, so as to prevent scratching the flange plate and the bottom plate of the coupling.

[0020] In some embodiments, when the left clamping piece and the right clamping piece are butted, a butt joint is formed at the butt joint, and the width of the butt joint is 1-2 mm.

[0021] In some embodiments, the gasket is made of carbon steel with a strength of 8.8 or above.

[0022] 1. Based on the above scheme, the machine pump coupling dismounting tool has a simple structure, the coupling is dismounted by using a mechanical dismounting scheme, heat dismounting is avoided, the operation requirements of a fireproof and explosion-proof area are met, safety is ensured, and work efficiency is high;

[0023] 2. The thrust bearing is arranged, so as to reduce friction caused by extrusion when the first bolt is fastened, and the labor intensity of an operator is greatly reduced.

[0024] 3. When dismounting, multiple first bolts are continuously fastened at the same angle and synchronously, so as to avoid the fact that the coupling deviates due to inconsistent fastening processes of the multiple first bolts, and the coupling or related devices are difficult to dismount and may even be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the schematic embodiments of the present application and the descriptions thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 It is a perspective structural schematic view of the machine pump coupling dismounting tool of the embodiment of the present application;

[0027] Figure 2 It is another angle structural schematic view of the machine pump coupling dismounting tool of the embodiment of the present application;

[0028] Figure 3 It is a structural schematic view of the ejection assembly of the embodiment of the present application;

[0029] In the drawings:

[0030] 10, clamping assembly; 11, left clamping piece; 12, right clamping piece; 13, second threaded hole; 20, coupling; 21, flange plate; 211, threaded hole; 22, shaft hole; 30, ejection assembly; 31, bottom plate; 311, first threaded hole; 32, ejector rod; 33, lead screw; 331, first bolt; 332, second bolt; 34, gasket. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0033] The terms "first," "second," and "third" 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. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] As attached Figures 1-2 As shown, a dismantling fixture for a pump coupling according to one embodiment of the present invention includes,

[0036] The clamping assembly 10 includes a left clamping member 11 and a right clamping member 12 that are mated together. The left clamping member 11 and the right clamping member 12 are coplanar after mating and are positioned above the flange 21 of the coupling 20. In this embodiment, the left clamping member 11 and the right clamping member 12 are semi-circular ring structures. After the left clamping member 11 and the right clamping member 12 are mated, a mating seam 14 is formed at the mating point. The width of the mating seam 14 is 1-2 mm. The radius of the inner circle formed after mating is greater than or equal to the outer diameter of the coupling 20 and less than the outer diameter of the flange 21 of the coupling 20. This ensures that during the disassembly of the coupling 20, the left clamping member 11 and the right clamping member 12 always apply downward pressure to the flange 21, pulling the coupling 20 downward and separating it from the pump shaft.

[0037] The ejector assembly, located below the clamping assembly 10, includes a base plate 31. A push rod 32 is provided at the center of the base plate 31. The push rod 32 is located below the pump shaft (not shown in the figure) connected to the coupling 20. The pump shaft is located in the shaft hole 22 of the coupling. When disassembling, the push rod 32 is located below the pump shaft, providing this upward pushing force to the pump shaft.

[0038] The base plate 31 has a plurality of first threaded holes 311 evenly distributed on it, and the left clamping member 11 and the right clamping member 12 have second threaded holes 13 distributed on them respectively. The positions of the first threaded holes 311 and the second threaded holes 13 correspond to the positions of the first threaded holes 311 and the second threaded holes 13, and the positions of the first threaded holes 311 and the second threaded holes 13 correspond to the positions of the threaded holes 211 on the flange 21 of the coupling 20. In this embodiment, the flange 21 has four threaded holes evenly distributed on it, and the base plate 31 has four corresponding first threaded holes 31. The clamping assembly formed by the left clamping member 11 and the right clamping member 12 has four second threaded holes 13. Due to the position setting of the threaded holes on the flange, the second threaded holes 12 in this embodiment include a complete second threaded hole 13 located in the middle position of the left clamping member 11 and the right clamping member 12, and two second threaded holes 13 formed by the semi-circular structures at the two ends of the left clamping member 11 and the semi-circular structures at the two ends of the right clamping member 12.

[0039] In other embodiments of this application, the positions and number of the first threaded hole 311 and the second threaded hole 13 correspond to the threaded holes of the coupling flange, so that the lead screw 33 can pass smoothly through the clamping assembly 10, the flange of the coupling 20 and the base plate 33.

[0040] The lead screw 33 passes through the corresponding first threaded hole 311, the threaded hole on the flange 21 of the coupling, and the second threaded hole 13 from bottom to top. The first bolt 331 is screwed into the lower part of the lead screw 33, and the first bolt 331 is screwed down to the lower part of the first threaded hole 331 and tightened. The second bolt 332 is screwed into the upper part of the lead screw and screwed down to the upper part of the second threaded hole 13 and tightened. In this embodiment, there are fewer coupling models, and two lead screws 33 can be symmetrically arranged to complete the disassembly. For larger coupling models in other embodiments, the number of lead screws 33 can be appropriately increased to facilitate the disassembly of the coupling.

[0041] In this embodiment, when disassembling the coupling, the two first bolts 331 are tightened simultaneously and at the same angle clockwise to avoid the coupling shifting due to inconsistent tightening processes of the two first bolts 331, making disassembly difficult and potentially damaging the coupling or related devices. Under the push of the first bolts 331, the base plate 31 moves along the lead screw 33 towards the coupling 20. The push rod 32 applies an upward pushing force to the pump shaft, and the coupling 20 is subjected to the downward pressure in the opposite direction by the clamping assembly 10, pulling the coupling downward away from the pump shaft and successfully removing the coupling.

[0042] The dismantling fixture in this embodiment has a simple structure and uses a mechanical dismantling method to remove the coupling, avoiding thermal dismantling and assembly. It meets the operating requirements of fire-proof and explosion-proof areas, and is safe and efficient.

[0043] To reduce the friction caused by compression when tightening the first bolt 331, a thrust bearing 332 is provided between the first bolt 331 and the base plate 31, which greatly reduces the labor intensity of the operator.

[0044] Meanwhile, in order to better protect the coupling during disassembly, the plane of the clamping assembly 10 is parallel to the plane of the base plate 31, and both planes are parallel to the plane of the flange 21 of the coupling; the push rod 32 is coaxially arranged with the pump shaft, so that the pushing force of the push rod 32 on the pump shaft is along the direction of the central axis of the pump shaft, so that the reverse pressure provided by the left clamping member 11 and the right clamping member 12 on the flange 21 is balanced, preventing the coupling from shifting and becoming difficult to disassemble during disassembly, or even damaging the coupling or related devices.

[0045] Furthermore, a gasket 34 is provided between the second bolt 332 and the flange 21 of the coupling, and a gasket 34 is also provided between the thrust bearing 332 and the base plate 31. The gaskets are made of carbon steel with a strength of 8.8 or higher to prevent scratching the flange and base plate of the coupling.

[0046] Based on the above solution, the disassembly fixture for the pump coupling of this utility model has a simple structure and adopts a mechanical disassembly method to remove the coupling, avoiding thermal disassembly and assembly, meeting the operation requirements of fire-proof and explosion-proof areas, and is safe and efficient. The thrust bearing can reduce the friction caused by the compression when tightening the first bolt, greatly reducing the labor intensity of the operator. During disassembly, multiple first bolts are tightened simultaneously and continuously at the same angle, avoiding the coupling from shifting due to inconsistent tightening progress of multiple first bolts, making disassembly difficult, and even potentially damaging the coupling or related devices.

[0047] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A tooling for dismantling a pump coupling, characterized in that: include, The clamping assembly includes a left clamping member and a right clamping member that are mated together. The mated left clamping member and the right clamping member are coplanar and are positioned above the coupling flange. An ejector assembly, located below the clamping assembly, includes a base plate, a push rod is provided at the center of the base plate, and the push rod is located below the pump shaft connected to the coupling; The base plate has a plurality of first threaded holes evenly distributed thereon, and the left clamping member and the right clamping member are respectively provided with second threaded holes; the positions of the first threaded holes correspond to the positions of the second threaded holes. The lead screw passes sequentially through the first threaded hole, the threaded hole on the flange of the coupling, and the second threaded hole. A first bolt is provided at the position of the lead screw below the first threaded hole, and a second bolt is provided at the position of the lead screw above the second threaded hole. Tighten the first bolt, the base plate moves along the lead screw toward the coupling, the push rod applies an upward thrust to the pump shaft, the coupling is subjected to a downward pressure in the opposite direction by the clamping assembly, and the coupling is removed.

2. The dismantling fixture for the pump coupling according to claim 1, characterized in that, A thrust bearing is provided between the first bolt and the base plate.

3. The dismantling fixture for the pump coupling according to claim 1, characterized in that, The left and right clamping members are semi-circular ring structures. The radius of the inner circle formed after the left and right clamping members are connected is greater than or equal to the outer diameter of the coupling and less than the outer diameter of the coupling flange. This ensures that during the disassembly of the coupling, the left and right clamping members always apply downward pressure to the flange, pulling the coupling downward and separating it from the pump shaft.

4. The dismantling fixture for the pump coupling according to claim 3, characterized in that, The plane of the clamping assembly is parallel to the plane of the base plate, and both planes are parallel to the plane of the flange of the coupling.

5. The dismantling fixture for the pump coupling according to claim 1, characterized in that, The positions of the first threaded hole and the second threaded hole correspond to the positions of the threaded holes on the flange of the coupling.

6. The dismantling fixture for the pump coupling according to claim 1, characterized in that, The push rod is coaxially arranged with the pump shaft, such that the pushing force of the push rod on the pump shaft is along the direction of the central axis of the pump shaft.

7. The dismantling fixture for the pump coupling according to claim 1, characterized in that, Multiple first bolts are tightened synchronously and at the same angle to avoid coupling misalignment caused by inconsistent tightening processes of multiple first bolts.

8. The dismantling fixture for the pump coupling according to claim 2, characterized in that, A gasket is provided between the second bolt and the flange of the coupling, and a gasket is provided between the thrust bearing and the base plate.

9. The dismantling fixture for the pump coupling according to claim 2, characterized in that, When the left clamping member and the right clamping member are connected, a joint seam is formed at the connection point, and the width of the joint seam is 1-2mm.

10. The dismantling fixture for the pump coupling according to claim 8, characterized in that, The gasket is made of carbon steel with a strength grade of 8.8 or higher.

Images