CN219860334U - Novel jack-up nut jack - Google Patents

Abstract

The utility model discloses a novel jacking nut jack, which comprises a bolt and a first nut, wherein the bolt comprises a head and a screw rod which are fixedly connected with each other, the first nut is in threaded connection with the screw rod, one side of the first nut, which is far away from the screw rod, is sealed, one side of the head, which is far away from the screw rod, is fixedly connected with a first buffer cushion, one side of the first nut, which is far away from the seal, is fixedly connected with a second buffer cushion, the first buffer cushion is propped against a rotor step, and the second buffer cushion is propped against one surface of a coupling, which faces the rotor step. The utility model improves the efficiency, precision and safety of the disassembly of the rotor and the coupler.

Description

Novel jack-up nut jack

Technical Field

The utility model relates to the technical field of jacks, in particular to a novel jack-up nut jack.

Background

When the rotor of the steam turbine is finished, the coupling generally needs to be inspected for a contact surface with particularly high accuracy after the assembly is finished, and the roughness of the contact surface is required to be ensured to be more than or equal to Ra 0.8. The contact surface inspection is carried out by hoisting for a plurality of times, and the coupling and the rotor are tightly adhered after each contact surface inspection so as to be difficult to pull out. The traditional method uses a copper bar to beat the rotor and the coupler so as to release and separate the rotor and the coupler. But this kind of mode of beating the separation wastes time and energy, still needs other mechanical structure to carry out the cooperation of high degree of difficulty, and the slightly useful too hard condition still can leave the trace of colliding with on shaft coupling and rotor when beating the operation simultaneously, destroys finish machining's processingquality, also has the condition that beat forcefully improper messenger personnel bruise simultaneously, has the potential safety hazard. Under the condition that the propulsion amount and the groove width of the rotor and the coupling are high, the copper bar cannot be used for beating to detach the coupling from the rotor.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a novel jacking nut jack which is used for improving the efficiency, precision and safety of the disassembly of a rotor and a coupler.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel jack nut, includes bolt and first nut, the bolt includes head and the screw rod of mutual fixed connection, first nut spiro union the screw rod, first nut is kept away from one side of screw rod is sealed, the head is kept away from one side fixedly connected with first blotter of screw rod, first nut is kept away from sealed one side fixedly connected with second blotter, first blotter offsets with the rotor step, second blotter offsets with the shaft coupling orientation the one side of rotor step.

Further, the screw rod includes coaxial first pole portion, second pole portion and third pole portion, first pole portion the second pole portion with the diameter of third pole portion is the same, the one end fixed connection of first pole portion the head, first pole portion is kept away from the one end spiro union of head has first adjusting nut, first adjusting nut is kept away from the one end fixed connection of first pole portion the second pole portion, the one end spiro union that the second pole portion was kept away from first adjusting nut has second adjusting nut, the one end fixed connection of second adjusting nut is kept away from the second pole portion the third pole portion, the one end spiro union that the third pole portion was kept away from second adjusting nut the first nut.

Further, the two sides of the first adjusting nut are fixedly connected with third buffer pads, the two sides of the second adjusting nut are fixedly connected with fourth buffer pads, an opening is formed in the center of each of the third buffer pads and the center of each of the fourth buffer pads, and the diameter of the opening is larger than that of the first rod portion, that of the second rod portion and that of the third rod portion.

Further, the outer edges of the first adjusting nut and the second adjusting nut are regular hexagons with the same size.

Further, the outer edges of the head, the first nut, the first adjusting nut and the second adjusting nut are provided with anti-skid lines.

Further, the shape of the outer edge of the head and the outer edge of the first nut are regular hexagons with the same size.

Further, the first cushion pad and the second cushion pad are provided with anti-skid lines.

The utility model has the beneficial effects that:

according to the utility model, the screw thread travel of the bolt and the first nut which are in threaded connection with each other is prolonged by rotation, so that the rotor step and the coupler are jacked up, the disassembly efficiency of the rotor and the coupler is greatly accelerated, meanwhile, the screw thread travel is regulated by rotating the first nut, the regulation precision is high, the safety and the reliability are realized, the potential safety hazard generated when the copper rod is knocked to separate the rotor from the coupler is avoided, and the disassembly precision and the safety of the rotor and the coupler are improved; meanwhile, the first buffer pad and the second buffer pad are respectively arranged on the outer sides of the head part and the first nut, so that the phenomenon that workpieces are damaged by collision in the process of separating the rotor from the coupler is avoided, and the reject ratio of the workpieces is reduced.

Drawings

Fig. 1 is a schematic structural view of a novel jack-up nut jack in the present utility model.

Reference numerals: 1. a bolt; 2. a first nut; 3. a head; 4. a screw; 41. a first lever portion; 42. a second lever portion; 43. a third lever portion; 5. a first cushion pad; 6. a second cushion pad; 7. a first adjustment nut; 8. a second adjustment nut; 9. a third cushion pad; 10. and a fourth cushion pad.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

As shown in fig. 1, the novel jack nut of this embodiment comprises a bolt 1 and a first nut 2, wherein the bolt 1 comprises a head 3 and a screw 4 which are fixedly connected with each other, the first nut 2 is in threaded connection with the screw 4, one side of the first nut 2, which is far away from the screw 4, is sealed, one side of the head 3, which is far away from the screw 4, is fixedly connected with a first buffer pad 5, one side of the first nut 2, which is far away from the seal, is fixedly connected with a second buffer pad 6, the first buffer pad 5 is propped against a rotor step, and the second buffer pad 6 is propped against one side of the coupler, which faces the rotor step.

Specifically, in the embodiment, the novel jacking nut jack is placed between the rotor step and the coupler, the first nut 2 is rotated by using the wrench, so that the screw thread travel of the bolt 1 and the first nut 2 is prolonged, the rotor step and the coupler are jacked, the dismounting efficiency of the rotor and the coupler is greatly improved, meanwhile, the screw thread travel is adjusted by rotating the first nut 2, the adjusting precision is high, the safety and the reliability are realized, the potential safety hazard generated when the rotor and the coupler are separated by knocking the copper rod is avoided, and the dismounting precision and the safety of the rotor and the coupler are improved; meanwhile, the first buffer pad 5 and the second buffer pad 6 are respectively arranged on the outer sides of the head 3 and the first nut 2, so that the damage between workpieces is prevented in the process of separating the rotor from the coupler, the reject ratio of the workpieces is reduced, in the embodiment, the first buffer pad 5 and the second buffer pad 6 are made of metal copper materials, the effective buffer can be realized while certain hardness is ensured, and the damage to the workpieces is prevented.

Preferably, the screw 4 includes coaxial first rod 41, second rod 42 and third rod 43, the diameters of first rod 41, second rod 42 and third rod 43 are the same, the one end fixed connection head 3 of first rod 41, the one end spiro union that first rod 41 kept away from head 3 has first adjusting nut 7, the one end fixed connection second rod 42 that first adjusting nut 7 kept away from first rod 41, the one end spiro union that second rod 42 kept away from first adjusting nut 7 has second adjusting nut 8, the one end fixed connection third rod 43 that second adjusting nut 8 kept away from second rod 42, the one end spiro union that third rod 43 kept away from second adjusting nut 8 first nut 2.

Specifically, in this embodiment, through setting up first adjusting nut 7 and second adjusting nut 8, realized that the clearance between rotor step and shaft coupling is great, only rely on adjusting first nut 2 unable top open rotor step and shaft coupling time, can lengthen the interval between first pole portion 41 and the second pole portion 42 respectively through twisting first adjusting nut 7 and second adjusting nut 8 to and the interval between second pole portion 42 and the third pole portion 43, and then realize prolonging the overall screw thread stroke of novel top open nut jack, make novel top open nut jack can top open rotor step and shaft coupling, accomplish the dismantlement.

Preferably, the two sides of the first adjusting nut 7 are fixedly connected with a third buffer pad 9, the two sides of the second adjusting nut 8 are fixedly connected with a fourth buffer pad 10, the centers of the third buffer pad 9 and the fourth buffer pad 10 are provided with openings, and the diameters of the openings are larger than those of the first rod portion 41, the second rod portion 42 and the third rod portion 43.

Specifically, in this embodiment, the third cushion pad 9 and the fourth cushion pad 10 are made of metal copper materials, so that effective buffering is performed when workpieces collide during shortening the interval between the first rod portion 41 and the second rod portion 42 and shortening the interval between the second rod portion 42 and the third rod portion 43, damage caused by collision of the workpieces is avoided, and durability is improved.

Preferably, the outer edges of the first adjusting nut 7 and the second adjusting nut 8 are regular hexagons with consistent sizes.

Specifically, in this embodiment, through setting the outer edge shape of first adjusting nut 7 and second adjusting nut 8 to regular hexagon that the size is unanimous, the same spanner of use is conveniently twisted and is adjusted, promotes the convenience of stroke adjustment.

Preferably, the outer edges of the head 3, the first nut 2, the first adjusting nut 7 and the second adjusting nut 8 are all provided with anti-skid lines.

Specifically, in this embodiment, by providing the anti-slip lines on the outer edges of the head 3, the first nut 2, the first adjusting nut 7 and the second adjusting nut 8, the friction coefficient is greater when the head 3, the first nut 2, the first adjusting nut 7 and the second adjusting nut 8 are screwed by using a wrench or other screwing device, and the anti-slip effect is improved when the screwing is performed.

Preferably, the shape of the outer edge of the head 3 and the first nut 2 is regular hexagon with the same size.

Specifically, in this embodiment, the outer edge shapes of the first nut 2 and the head 3 are set to be regular hexagons with identical sizes, so that the same wrench is convenient to use for screwing adjustment, and convenience of stroke adjustment is improved.

Preferably, the first cushion pad 5 and the second cushion pad 6 are provided with anti-skid lines.

Specifically, in this embodiment, through set up anti-skidding line on first blotter 5 and second blotter 6, can promote novel jack-up nut jack anti-skidding performance when rotor and shaft coupling are being jacked up, avoid jack-up in-process to take place to skid and drop, influence jack-up dismantlement effect.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (7)

1. Novel jack-up nut jack, its characterized in that: including bolt (1) and first nut (2), bolt (1) are including head (3) and screw rod (4) of mutual fixed connection, first nut (2) spiro union screw rod (4), first nut (2) are kept away from one side of screw rod (4) is sealed, head (3) are kept away from one side fixedly connected with first blotter (5) of screw rod (4), first nut (2) are kept away from sealed one side fixedly connected with second blotter (6), first blotter (5) offset with the rotor step, second blotter (6) are towards with the shaft coupling one side of rotor step offsets.

2. The novel jack-up nut jack of claim 1, wherein: screw rod (4) are including coaxial first pole portion (41), second pole portion (42) and third pole portion (43), first pole portion (41) second pole portion (42) with the diameter of third pole portion (43) is the same, the one end fixed connection of first pole portion (41) head (3), first pole portion (41) are kept away from one end spiro union of head (3) has first adjusting nut (7), first adjusting nut (7) are kept away from one end fixed connection of first pole portion (41) second pole portion (42), second pole portion (42) are kept away from one end spiro union of first adjusting nut (7) has second adjusting nut (8), one end fixed connection of second adjusting nut (8) are kept away from second pole portion (42) third pole portion (43), one end spiro union of third pole portion (43) are kept away from second adjusting nut (8) first nut (2).

3. The novel jack-up nut as claimed in claim 2, wherein: the two sides of the first adjusting nut (7) are fixedly connected with a third buffer pad (9), the two sides of the second adjusting nut (8) are fixedly connected with a fourth buffer pad (10), an opening is formed in the center of the third buffer pad (9) and the center of the fourth buffer pad (10), and the diameter of the opening is larger than that of the first rod portion (41), the second rod portion (42) and the diameter of the third rod portion (43).

4. The novel jack-up nut as claimed in claim 2, wherein: the outer edges of the first adjusting nut (7) and the second adjusting nut (8) are regular hexagons with the same size.

5. The novel jack-up nut as claimed in claim 2, wherein: the head (3), the first nut (2), the first adjusting nut (7) and the second adjusting nut (8) are all provided with anti-slip lines on the outer edges.

6. The novel jack-up nut jack of claim 1, wherein: the shape of the outer edge of the head part (3) and the outer edge of the first nut (2) are regular hexagons with the same size.

7. The novel jack-up nut jack of claim 1, wherein: the first buffer cushion (5) and the second buffer cushion (6) are provided with anti-skid lines.