CN214935647U - Jacking shaft tool - Google Patents

Abstract

The utility model relates to the technical field of maintenance of a main water feed pump set of a nuclear power plant, in particular to a jacking shaft tool, which comprises a support frame, a support rod, a shaft support piece and a jack, wherein the support rod is movably arranged on the support frame in a penetrating way; the shaft support piece is arranged on the supporting rod and used for supporting a shaft; the jack sets up on the support frame and with the bracing piece butt, the jack can drive the relative support frame of bracing piece and stretch out. Can directly erect the apical axis instrument at the both ends of main feed pump package pump shaft or motor shaft during the use, adjust the bearing height through the jack, later overhaul the maintenance to the internal component, compare in prior art and lift the method of axle through chain block or single track electric block, the utility model discloses an apical axis instrument supports more firmly, can not produce rocking by a relatively large margin, can specifically set up a plurality of apical axis instruments to the axle of different length and weight and arrange the different positions on axle length direction, and the combination is nimble and the installation is dismantled and is removed the convenience.

Description

Jacking shaft tool

Technical Field

The utility model relates to a nuclear power plant owner feeds water pump set and overhauls technical field, especially relates to a jackshaft instrument.

Background

The main water feed pump set is an important rotating device of a nuclear power plant and a thermal power plant, and mainly has the function of conveying feed water with a certain temperature in the deaerator to a steam generator or a boiler so as to generate steam. In order to ensure that the main water supply pump set can be in a stable operation state for a long time, the power plant needs to disassemble and overhaul the main water supply pump set regularly, and the shaft lifting operation of a pump shaft and a motor shaft is involved in the disassembly process. The pump shaft and the motor shaft of the main water feed pump set of the AP1000 nuclear power plant have the characteristics of large weight, long span, small fit clearance and the like, so that the requirements on control precision and stability in the shaft lifting process of the pump shaft and the motor shaft are high. In the prior art, the method for lifting the shaft by the chain block or the single-rail electric block used by the AP1000 has the problems that the control precision is difficult to master, the stability is poor, and internal parts and rotor parts are easy to be damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a jack-pin instrument, the jack-pin is stable good when overhauing, can not be because of rocking damage inside part and rotor part and equipment convenience.

To achieve the purpose, the utility model adopts the following technical proposal:

an ejector tool, comprising:

a support frame;

the supporting rod is movably arranged on the supporting frame in a penetrating manner;

the shaft support piece is arranged on the supporting rod and used for supporting a shaft;

the jack is arranged on the support frame, the output end of the jack is abutted to the support rod, and the jack can drive the support rod to extend out relative to the support frame.

Preferably, the support frame comprises a bottom plate, a plurality of rib plates and a sleeve, the uniform ends of the plurality of rib plates are connected to the bottom plate, the other ends of the plurality of rib plates are connected to the sleeve, the sleeve is located right above the bottom plate, the support rod is movably arranged in the sleeve in a penetrating mode, and the jack is arranged on the bottom plate and located right below the support rod.

Preferably, the bottom plate comprises a first sheet material piece and a second sheet material piece, the first sheet material piece and the second sheet material piece being arranged crosswise in an X-shape.

Preferably, a positioning ring coaxial with the sleeve is arranged at the intersection of the first plate and the second plate, the first plate and the second plate are arranged in the positioning ring, and the jack is arranged in the positioning ring.

Preferably, the sleeve is provided with a gauge stand.

Preferably, the top shaft tool further comprises a dial indicator, and the dial indicator is arranged on the gauge stand.

Preferably, the rib plate is provided with a hoisting piece.

Preferably, the shaft support member is provided with a V-shaped groove, and a groove wall of the V-shaped groove is used for supporting the shaft.

Preferably, a buffer pad is arranged on the groove wall of the V-shaped groove.

Preferably, the surfaces of the support frame and the shaft support piece are both provided with anti-rust layers.

The utility model has the advantages that: the utility model provides a jack instrument can directly erect at the both ends of the pump shaft of main water pump package or motor shaft during the use, adjusts bearing height through the jack, later overhauls the maintenance to the internal component, compares in prior art and lifts the method of axle through chain block or single track electric block, uses the utility model provides a jack instrument supports more firmly, can not produce rocking by a relatively large margin.

Drawings

Fig. 1 is an axonometric view of the mounting structure of the supporting frame and the supporting rod in the jacking shaft tool of the utility model;

FIG. 2 is a front view of the whole structure of the jacking shaft tool during jacking shaft operation;

FIG. 3 is a left side view of the whole structure of the jack-up tool during operation;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;

in the figure:

1. a support frame; 11. a base plate; 111. a first sheet member; 112. a second sheet member; 113. a positioning ring; 12. a rib plate; 121. hoisting a piece; 13. a sleeve;

2. a support bar;

3. a shaft holder; 31. a V-shaped groove; 32. a cushion pad;

4. a jack.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-4, the present embodiment provides a shaft ejecting tool, which includes a supporting frame 1, a supporting rod 2, a shaft supporting member 3 and a jack 4, wherein the supporting rod 2 is movably disposed on the supporting frame 1; the shaft support piece 3 is arranged on the support rod 2 and used for supporting a shaft; jack 4 sets up on support frame 1 and jack 4's output and bracing piece 2 butt, and jack 4 can drive bracing piece 2 and stretch out relative support frame 1.

The apical axis instrument that this embodiment provided, can directly erect the both ends at main feed pump package pump shaft or motor shaft during the use, adjust supporting height through jack 4, later overhaul the maintenance to the internal component, compare in prior art in the method of lifting the axle through chain block or single track electric block, the apical axis instrument that uses this embodiment to provide supports more firmly, can not produce rocking by a relatively large margin, can specifically set up a plurality of apical axis instruments to the axle piece of different length and weight and arrange the different positions on axle length direction, the combination is nimble and the installation is dismantled and is removed the convenience.

Specifically, support frame 1 includes bottom plate 11, a plurality of floor 12 and sleeve pipe 13, a plurality of floor 12 homogeneous ends are connected in bottom plate 11, the other end is connected in sleeve pipe 13, in this embodiment, floor 12 is provided with four, the interval evenly arranges the circumference at sleeve pipe 13, the atress is even, it is more firm to make the support, sleeve pipe 13 is located bottom plate 11 directly over, 2 removal of bracing piece are worn to establish in sleeve pipe 13, jack 4 sets up on bottom plate 11, and be located bracing piece 2 directly under, guarantee that jack 4's output is just to bracing piece 2, the atress is inhomogeneous when preventing jack 4 top inclined to one side bracing piece 2 apical axis.

Furthermore, the bottom plate 11 comprises a first plate 111 and a second plate 112, and the first plate 111 and the second plate 112 are arranged in an X shape in an intersecting manner, so that the weight of the bottom plate 11 can be reduced, and interference between the bottom plate 11 and a pump or motor accessory pipeline can be avoided.

Furthermore, the bottom plate 11 is provided with a positioning ring 113 coaxial with the sleeve 13, the positioning ring 113 is located at the intersection of the first plate 111 and the second plate 112, the jack 4 is arranged in the positioning ring 113, an operator does not need to repeatedly correct the installation position of the jack 4, the jack 4 and the support rod 2 can be ensured to be in the coaxial centering position only by placing the jack 4 in the positioning ring 113, and the installation is convenient and rapid.

Specifically, the sleeve 13 is provided with a gauge stand, and further, the gauge stand in this embodiment is a magnetic gauge stand, and can be directly attached to the sleeve 13, and as a preferred scheme, the gauge stand in other embodiments can also be mounted on the sleeve 13 through fixing members such as bolts and nuts, so that the connection is more stable, and no limitation is made here.

Furthermore, the multifunctional ejector pin tool also comprises a dial indicator, wherein the dial indicator is arranged on the gauge stand, a pointer of the dial indicator vertically points on the shaft, the height of the ejector pin can be accurately monitored, and the coordination and consistency of the heights of the ejector pins can be ensured when a plurality of ejector pin tools are used by observing the reading of the dial indicator.

Specifically, the lifting piece 121 is arranged on the rib plate 12, in this embodiment, two lifting pieces 121 are arranged on the circumferential surface of the sleeve 13, so that stable lifting during moving is ensured, and the lifting piece 121 is made of low-carbon alloy steel Q345B, so that sufficient lifting strength and good welding performance are ensured.

Specifically, the shaft support member 3 is provided with a V-shaped groove 31, and the groove wall of the V-shaped groove 31 is used for supporting the shaft, so as to ensure that the shaft does not transversely shake when the top shaft is supported, and increase the stability of the support.

Furthermore, the groove wall of the V-shaped groove 31 is provided with a cushion pad 32, and further the cushion pad 32 is a nylon cushion block and fixed on the groove wall of the V-shaped groove 31 through a screw, so that the shaft is buffered during shaft jacking, and the shaft support 3 is prevented from scraping the surface of the shaft due to impact force during shaft jacking.

Specifically, the surfaces of the support frame 1 and the shaft support member 3 are both provided with an antirust layer, specifically, the antirust layer is antirust paint, and the antirust paint is coated on the surfaces of the support frame 1 and the shaft support member 3 and isolated from the external atmosphere, so that the surfaces are prevented from being rusted. Of course, in other embodiments, rust prevention measures such as electroplating may be adopted, and no limitation is made herein.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An ejector pin tool, comprising:

a support frame (1);

the supporting rod (2) is movably arranged on the supporting frame (1) in a penetrating manner;

the shaft support piece (3) is arranged on the supporting rod (2) and used for supporting a shaft;

jack (4), jack (4) set up on support frame (1) just the output of jack (4) with bracing piece (2) butt, jack (4) can drive bracing piece (2) are relative support frame (1) stretches out.

2. The jacking tool according to claim 1, wherein the supporting frame (1) comprises a bottom plate (11), a plurality of ribs (12) and a sleeve (13), one end of each of the plurality of ribs (12) is connected to the bottom plate (11), the other end of each of the plurality of ribs is connected to the sleeve (13), the sleeve (13) is located right above the bottom plate (11), the supporting rod (2) is movably arranged in the sleeve (13), and the jack (4) is arranged on the bottom plate (11) and located right below the supporting rod (2).

3. Jacking tool according to claim 2, wherein the bottom plate (11) comprises a first sheet material piece (111) and a second sheet material piece (112), the first sheet material piece (111) and the second sheet material piece (112) being arranged crosswise in an X-shape.

4. Jacking tool according to claim 3, wherein a positioning ring (113) coaxial with the sleeve (13) is provided at the intersection of the first sheet-metal piece (111) and the second sheet-metal piece (112), the jack (4) being provided in the positioning ring (113).

5. Jacking tool according to claim 2, wherein a gauge stand is provided on said sleeve (13).

6. The tip spindle tool according to claim 5, further comprising a dial indicator, the dial indicator being disposed on the gauge stand.

7. Jacking tool according to claim 2, wherein said rib (12) is provided with a sling (121).

8. A tool as claimed in claim 1, wherein the holder (3) is provided with a V-shaped groove (31), and the wall of the V-shaped groove (31) is used for supporting the shaft.

9. Jacking tool according to claim 8, wherein a cushion pad (32) is provided on the groove wall of the V-shaped groove (31).

10. Jacking tool according to any one of claims 1 to 9, wherein the surfaces of both the support frame (1) and the pedestal (3) are provided with a rust-preventive layer.

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