Quick disassembly and assembly type pump shaft hoisting tool

Abstract

The utility model relates to the field of deep-well pump hoisting, in particular to a quick disassembly and assembly type pump shaft hoisting tool which comprises a lifting lug, two branch clamping rings and a locking assembly connected to the branch clamping rings and used for locking the distance between the branch clamping rings, and a pump shaft is installed between the two branch clamping rings. A limiting assembly for limiting relative movement of the branch clamping ring and the pump shaft in the vertical direction is arranged between the branch clamping ring and the pump shaft, the lifting lug is connected with the branch clamping ring, through cooperation of the branch clamping ring and the locking assembly, the disassembly and assembly process is simple and rapid, the pump shaft is not prone to being damaged, the pump shaft is not prone to overturning, safety is high, and the service life of the pump is prolonged. And safe and efficient hoisting operation is realized.

Description

Technical Field

[0001] The utility model relates to the field of deep well pump hoisting, and more specifically to a quick disassembly and assembly type pump shaft hoisting tool. Background Art

[0002] Long-shaft deep-well pumps are widely used on offshore oil and gas platforms, mainly in diesel engine fire pumps and seawater lifting pumps. During the step-by-step disassembly and reinstallation of the pump unit, each pump shaft needs to be hoisted and transported, and efficient and safe hoisting operations are crucial.

[0003] Patent CN206874533U discloses a long-shaft deep-well pump maintenance disc-moving device, including a pump shaft of a long-shaft deep-well pump, the end of the pump shaft is a stepped shaft section, a flat key is installed on the stepped shaft section, a first shaft ring is provided at the head of the stepped shaft section, the outer side of the first shaft ring is a first connector, the pump shaft is connected to the disc-moving device through a sleeve coupling, the disc-moving device includes a lifting ear connector, the lifting ear connector is connected to the connecting column through a pipe clamp section, a key is machined on the outer wall of the connecting column, a second shaft ring is machined at the end of the connecting column, the outer side of the second shaft ring is a second connector, the second connector fits with the end face of the first connector, the first shaft ring and the second shaft ring are provided with a snap ring, the snap ring fixes the second connector to the first connector. This device can be used for disc-moving a long-shaft deep-well pump during the maintenance process, and the pump shaft can be lifted by the sleeve coupling and the snap ring. However, in the above solution, the lifting ear connector is fixedly connected to the connecting column, which makes it inconvenient to disassemble and install the lifting ear connector, and there are inconveniences in production practice. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a quick disassembly and assembly pump shaft lifting tool, which can conveniently complete the disassembly and assembly of the tool and the pump shaft without damaging the pump shaft and eliminating the risk of the pump shaft overturning, thereby realizing efficient and safe lifting operations.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A quick-disassembly pump shaft lifting tool is provided, comprising a lifting lug, two split snap rings and a locking assembly connected to the split snap rings and used to lock the distance between the split snap rings. The pump shaft is installed between the two split snap rings, and a limit assembly is provided between the split snap rings and the pump shaft to limit the vertical relative movement between the split snap rings and the pump shaft. The lifting lug is connected to the split snap rings.

[0007] The utility model discloses a quick disassembly and assembly type pump shaft lifting tool. When performing lifting work, each component clamping ring is installed on the top of the pump shaft, and the locking assembly is installed on the sub-clamping ring, so that the relative movement of each component clamping ring is restricted and will not separate from the pump shaft in the horizontal direction. The limiting assembly will prevent the pump shaft from separating from the sub-clamping ring in the vertical direction, thereby fixing the pump shaft under the sub-clamping ring. The lifting ear is connected with the sub-clamping ring, and the sub-clamping ring and the pump shaft are lifted by lifting the lifting ear to realize the installation and movement of the pump shaft. After the movement is completed, the locking assembly is removed and the pump shaft is removed. The disassembly and assembly process is simple and fast, and the pump shaft is not easily damaged. The pump shaft is not easy to overturn, and the safety is high, so that safe and efficient lifting operation can be realized.

[0008] Furthermore, the limiting assembly includes a limiting groove and a limiting block, the limiting block is connected with the limiting groove, the limiting groove is arranged at the top of the pump shaft, and the limiting block is arranged at the side of the sub-clamping ring; or the limiting groove is arranged at the side of the sub-clamping ring, and the limiting block is arranged at the top of the pump shaft. When installing the pump shaft, the limiting blocks on the clamping rings of each component are inserted into the limiting grooves, or the limiting grooves on the sub-clamping rings are clamped on the limiting blocks, and the sub-clamping rings are fixed with the locking assembly to complete the installation.

[0009] Furthermore, the locking assembly includes a limit rod, a first limit piece and a second limit piece provided on the limit rod, a first through hole is provided on the side of the sub-circuit ring, the limit rod passes through the two sub-circuit rings through the first through hole, and the first through hole is located between the first limit piece and the second limit piece. When installing the locking assembly, the limit rod is passed through the first through hole, and the second limit piece is installed on the limit rod, so that the movement range of the sub-circuit ring is limited between the first limit piece and the second limit piece, so as to avoid the distance between the sub-circuit rings being too large, causing the pump shaft to fall off.

[0010] Furthermore, the limit rod is a bolt structure with the first limit piece at one end, and a locking nut is threadedly connected to the other end of the bolt structure, and the diameter of the locking nut is larger than the diameter of the first through hole. When the second limit piece is removed, the position of the sub-circuit ring is limited between the first limit piece and the locking nut, preventing the limit rod from slipping out of the first through hole, so that the next time the sub-circuit ring is locked, only the second limit piece needs to be installed, which simplifies the installation steps and prevents the loss of components such as the limit rod and the sub-circuit ring.

[0011] Furthermore, the second limiter is a retaining spring pin, the limiter rod is provided with a second through hole, and the second limiter passes through the second through hole. When installing the locking assembly, the limiter rod is passed through the first through hole, the second limiter is passed through the second through hole and locked, and the sub-retaining ring is restricted between the first limiter and the second limiter, so that the sub-retaining ring can limit the horizontal position of the pump shaft within the range of motion, ensuring that the pump shaft will not be separated from the fixation of the sub-retaining ring; the retaining spring pin has low manufacturing cost, is easy to disassemble and assemble, has self-locking characteristics, and has strong load-bearing capacity.

[0012] Furthermore, the diameter of the first through hole is equal to that of the limiting rod. The first through hole and the limiting rod have equal diameters, which can reduce the shaking of the sub-clamping ring and more stably hoist the pump shaft. The two first through holes have the same axis, which can reduce the resistance encountered by the limiting rod when passing through the sub-clamping ring.

[0013] Furthermore, the first limiting member and the second limiting member are both fitted with the split clamping ring, and the split clamping ring is fitted with the side surface of the pump shaft, so that the relative shaking between the split clamping ring and the pump shaft can be reduced and the hoisting stability can be improved.

[0014] Furthermore, a flat washer is provided between the second limiting member and the sub-circlip ring, and the flat washer is sleeved on the limiting rod, and plays a role in protecting the circlip pin.

[0015] Furthermore, the two lifting ears are respectively fixedly connected to the tops of the two sub-clamping rings, and the lifting ears are provided with lifting holes, the axes of the two lifting holes are the same, and there is a gap between the two sub-clamping rings. The lifting ears can be lifted by passing the lifting hook through the lifting holes, thereby lifting the sub-clamping rings and the pump shaft; leaving a gap between the sub-clamping rings can prevent the sub-clamping rings from being unable to clamp the pump shaft when they expand due to heat, and at the same time can reduce the stress during lifting and increase the service life.

[0016] Furthermore, a plurality of evenly distributed support members are provided between the opposite sides of the two lifting ears, and the plurality of support members are all located above the lifting holes, and the support members are provided on one of the lifting ears and abut against the other lifting ear. When the pump shaft is hoisted, the force on the lifting ears can be made more uniform, the load capacity can be improved, and the service life can be extended.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The quick disassembly and assembly pump shaft lifting tool of the utility model cooperates with the sub-clamp ring and the locking assembly, so the disassembly and assembly process is simple and fast, the pump shaft is not easily damaged, and the pump shaft is not prone to overturning, the safety is high, and a safe and efficient lifting operation is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first structural schematic diagram of the quick disassembly and assembly type pump shaft lifting tool of the utility model;

[0020] Figure 2 This is a second structural schematic diagram of the quick disassembly and assembly type pump shaft lifting tool of the utility model;

[0021] Figure 3 This is a schematic diagram of the locking assembly structure of the quick disassembly type pump shaft lifting tool of the utility model;

[0022] In the accompanying drawings: 1. pump shaft; 2. split retaining ring; 21. first through hole; 3. limit assembly; 31. limit groove; 32. limit block; 4. locking assembly; 41. limit rod; 411. second through hole; 42. first limit piece; 43. second limit piece; 431. flat washer; 44. locking nut; 5. lifting ear; 51. lifting hole; 52. support piece. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] Embodiment 1

[0026] like Figures 1 to 3 The figure shows the first embodiment of the quick-disassembly pump shaft lifting tool of the utility model, which provides a quick-disassembly pump shaft lifting tool, including a lifting ear 5, two split retaining rings 2 and a locking assembly 4 connected to the split retaining rings 2 and used to lock the distance between the split retaining rings 2. The pump shaft 1 is installed between the two split retaining rings 2. A limit assembly 3 is provided between the split retaining rings 2 and the pump shaft 1 to limit the vertical relative movement of the split retaining rings 2 and the pump shaft 1. The lifting ear 5 is connected to the split retaining rings 2.

[0027] The utility model provides a quick disassembly and assembly type pump shaft 1 lifting tool. When performing lifting work, each component snap ring 2 is installed on the top of the pump shaft 1, and the locking assembly 4 is installed on the snap ring 2, so that the relative movement of each component snap ring 2 is restricted and will not separate from the pump shaft 1 in the horizontal direction. The limit assembly 3 prevents the pump shaft 1 from separating from the snap ring 2 in the vertical direction, thereby fixing the pump shaft 1 below the snap ring 2. The lifting ear 5 is connected to the snap ring 2, and the snap ring 2 and the pump shaft 1 are lifted by lifting the lifting ear 5 to achieve installation and movement of the pump shaft 1. After the movement is completed, the locking assembly 4 is removed and the pump shaft 1 is removed. The disassembly and assembly process is simple and fast, and the pump shaft 1 is not easily damaged, and the pump shaft 1 is not easy to overturn. It has high safety and can achieve safe and efficient lifting operations. Figure 1 shown.

[0028] The limiting assembly 3 includes a limiting groove 31 and a limiting block 32, wherein the limiting block 32 is connected with the limiting groove 31, the limiting groove 31 is arranged at the top of the pump shaft 1, and the limiting block 32 is arranged at the side of the sub-clamping ring 2; or the limiting groove 31 is arranged at the side of the sub-clamping ring 2, and the limiting block 32 is arranged at the top of the pump shaft 1. When installing the pump shaft 1, the limiting block 32 on each component clamping ring 2 is inserted into the limiting groove 31, or the limiting groove 31 on the sub-clamping ring 2 is clamped on the limiting block 32, and the sub-clamping ring 2 is fixed with the locking assembly 4 to complete the installation.

[0029] The locking assembly 4 includes a limiting rod 41, a first limiting piece 42 and a second limiting piece 43 arranged on the limiting rod 41, and a first through hole 21 is arranged on the side of the sub-circuit ring 2. The limiting rod 41 passes through the two sub-circuit rings 2 through the first through hole 21, and the first through hole 21 is located between the first limiting piece 42 and the second limiting piece 43. When installing the locking assembly 4, the limiting rod 41 passes through the first through hole 21, and the second limiting piece 43 is installed on the limiting rod 41, so that the movement range of the sub-circuit ring 2 is limited between the first limiting piece 42 and the second limiting piece 43, so as to avoid the distance between the sub-circuit rings 2 being too large, causing the pump shaft 1 to fall off. Figure 2 shown.

[0030] The diameters of the first through hole 21 and the limiting rod 41 are equal, and the axes of the two first through holes 21 through which the limiting rod 41 passes are the same. The first through hole 21 and the limiting rod 41 have equal diameters, which can reduce the shaking of the sub-clamping ring 2, and the axes of the two first through holes 21 are the same, which can reduce the resistance encountered by the limiting rod 41 when passing through the sub-clamping ring 2.

[0031] The first stopper 42 and the second stopper 43 are both fitted with the split clamping ring 2, and the split clamping ring 2 is fitted with the side surface of the pump shaft 1. This can reduce the relative shaking between the split clamping ring 2 and the pump shaft 1 and improve the hoisting stability.

[0032] In this embodiment, the split clamp ring 2 is an original part of a long-axis deep well pump, made of Monel K500, which is high in strength and corrosion-resistant. Two through holes with a diameter of 9 mm are drilled at about 3 / 4 of the height in the vertical direction of the two split clamp rings 2.

[0033] The lifting lug 5 is in an inverted U shape and is made of a stainless steel plate with a thickness of about 2-3 mm. It is prefabricated and fixed on the split clamping ring 2 by welding.

[0034] Embodiment 2

[0035] This embodiment is the second embodiment of the utility model, and this embodiment is similar to the first embodiment, except that the limit rod 41 is a bolt structure with the first limit member 42 at one end, and a locking nut 44 is threadedly connected to the other end of the bolt structure, and the diameter of the locking nut 44 is larger than the diameter of the first through hole 21. When the second limit member 43 is removed, the position of the sub-circuit ring 2 is limited between the first limit member 42 and the locking nut 44, preventing the limit rod 41 from slipping out of the first through hole 21, so that the next time the sub-circuit ring 2 is locked, only the second limit member 43 needs to be installed, which simplifies the installation steps and prevents the loss of components such as the limit rod 41 and the sub-circuit ring 2.

[0036] The second limit member 43 is a retaining spring pin, and the limit rod 41 is provided with a second through hole 411, through which the second limit member 43 passes. When installing the locking assembly 4, the limit rod 41 is passed through the first through hole 21, the locking nut 44 is fixed to the thread at the end of the limit rod 41, the retaining spring pin is passed through the second through hole 411 and locked, and the sub-retaining ring 2 is restricted between the first limit member 42 and the second limit member 43, so that the sub-retaining ring 2 can limit the horizontal position of the pump shaft 1 within the range of motion, ensuring that the pump shaft 1 will not be separated from the fixation of the sub-retaining ring 2; the retaining spring pin has low manufacturing cost, is easy to disassemble and assemble, has self-locking characteristics, and has a strong load-bearing capacity. Figure 2 and Figure 3 shown.

[0037] In this embodiment, the retaining spring pin is a pin retaining spring pin, which is made of 304 stainless steel and has a specification of 3*42*25mm. A 15cm long stainless steel anti-lost rope is also connected to the retaining spring pin, and the anti-lost rope is fixed on the lifting ear 5. The retaining spring pin does not need to be stored after disassembly and can be directly used during installation without the risk of loss, making the use of lifting tools more convenient and improving production efficiency.

[0038] The limiting rod 41 is a 316 stainless steel hexagonal bolt, and the diameter of the second through hole 411 is 3.5-4 mm.

[0039] A flat washer 431 is provided between the circlip pin and the sub-circlip ring 2, and the flat washer 431 is sleeved on the limit rod 41. The flat washer 431 protects the circlip pin; there are two locking nuts 44, and the stability of the connection between the locking nuts 44 and the bolts is improved by double nut locking. A spring washer is also provided between the locking nuts 44 to prevent the locking nuts from loosening.

[0040] When installing the locking assembly 4, the bolt is passed through the two first through holes 21, the flat washer 431 is inserted, the pin retaining pin is inserted, the first limit piece 42 and the retaining ring 2 are clamped by the retaining nut 44, and the locking nut 44 is screwed into the thread at the end of the bolt to complete the installation of the lifting tool.

[0041] In addition, it should be noted that a plurality of second through holes 411 may be provided on the limiting rod 41 , and the position of the second limiting member 43 may be adjusted to realize the hoisting of pump shafts 1 of different specifications, thereby improving the flexibility of the hoisting operation.

[0042] Embodiment 3

[0043] This embodiment is the third embodiment of the utility model, and this embodiment is similar to the first embodiment, except that the two lifting ears 5 are respectively fixedly connected to the tops of the two sub-clamping rings 2, and the lifting ears 5 are provided with lifting holes 51, and the two lifting holes 51 have the same axis, and there is a gap between the two sub-clamping rings 2. The lifting ears 5 can be lifted by passing the lifting hook through the lifting hole 51, so as to lift the sub-clamping ring 2 and the pump shaft 1; leaving a gap between the sub-clamping rings 2 can prevent the sub-clamping rings 2 from being unable to clamp the pump shaft 1 when they expand due to heat, and at the same time can reduce the stress during lifting and increase the service life.

[0044] A plurality of evenly distributed support members 52 are provided between the opposite sides of the two lifting ears 5. The plurality of support members 52 are all located above the lifting holes 51. The support members 52 are provided on one of the lifting ears 5 and abut against the other lifting ear 5. When the pump shaft 1 is hoisted, the force on the lifting ears 5 can be made more uniform, the load capacity can be improved, and the service life can be extended. Figure 3 shown.

[0045] In this embodiment, the center of the hanging hole 51 is located on the vertical center line of the hanging ear 5. There are two support members 52, which are symmetrically distributed on both sides of the vertical diameter of the hanging hole 51. The thickness of the support members 52 is about 2 mm.

[0046] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A quick disassembly and assembly pump shaft lifting tool, characterized in that: The invention comprises a lifting lug (5), two split retaining rings (2) and a locking assembly (4) connected to the split retaining rings (2) and used for locking the distance between the split retaining rings (2); the pump shaft (1) is installed between the two split retaining rings (2); a limiting assembly (3) is provided between the split retaining rings (2) and the pump shaft (1) for limiting the vertical relative movement between the split retaining rings (2) and the pump shaft (1); and the lifting lug (5) is connected to the split retaining rings (2).

2. The quick disassembly pump shaft lifting tool according to claim 1 is characterized in that: The limiting assembly (3) comprises a limiting groove (31) and a limiting block (32), wherein the limiting block (32) is cooperatively connected with the limiting groove (31), the limiting groove (31) is arranged at the top of the pump shaft (1), and the limiting block (32) is arranged on the side of the split retaining ring (2); or the limiting groove (31) is arranged on the side of the split retaining ring (2), and the limiting block (32) is arranged at the top of the pump shaft (1).

3. The quick disassembly pump shaft lifting tool according to claim 1, characterized in that: The locking assembly (4) comprises a limiting rod (41), a first limiting piece (42) and a second limiting piece (43) arranged on the limiting rod (41); a first through hole (21) is arranged on the side of the split clamping ring (2); the limiting rod (41) passes through the two split clamping rings (2) through the first through hole (21); and the first through hole (21) is located between the first limiting piece (42) and the second limiting piece (43).

4. The quick disassembly pump shaft lifting tool according to claim 3 is characterized in that: The limiting rod (41) is a bolt structure with the first limiting member (42) provided at one end, and a locking nut (44) is threadedly connected to the other end of the bolt structure, and the diameter of the locking nut (44) is greater than the diameter of the first through hole (21).

5. The quick disassembly pump shaft lifting tool according to claim 3, characterized in that: The second limiting member (43) is a spring pin, the limiting rod (41) is provided with a second through hole (411), and the second limiting member (43) passes through the second through hole (411).

6. The quick disassembly pump shaft lifting tool according to claim 3, characterized in that: The diameters of the first through hole (21) and the limiting rod (41) are equal.

7. The quick disassembly pump shaft lifting tool according to claim 3, characterized in that: The first limiting member (42) and the second limiting member (43) are both fitted with the split retaining ring (2), and the split retaining ring (2) is fitted with the side surface of the pump shaft (1).

8. The quick disassembly pump shaft lifting tool according to claim 5, characterized in that: A flat washer (431) is provided between the second limiting member (43) and the split clamping ring (2), and the flat washer (431) is sleeved on the limiting rod (41).

9. The quick disassembly pump shaft lifting tool according to claim 1, characterized in that: The two lifting ears (5) are respectively fixedly connected to the tops of the two sub-clamping rings (2); a lifting hole (51) is provided on the lifting ear (5); the two lifting holes (51) have the same axis, and a gap exists between the two sub-clamping rings (2).

10. The quick disassembly pump shaft lifting tool according to claim 9, characterized in that: A plurality of evenly distributed support members (52) are provided between opposite sides of the two lifting ears (5), and the plurality of support members (52) are all located above the lifting holes (51). The support members (52) are provided on one of the lifting ears (5) and abut against the other lifting ear (5).

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