CN214383668U

CN214383668U - Engine crankshaft jacking tool

Info

Publication number: CN214383668U
Application number: CN202120125093.6U
Authority: CN
Inventors: 梅春阳
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-10-12
Anticipated expiration: 2031-01-18

Abstract

The utility model relates to the technical field of engine maintenance tools, in particular to an engine crankshaft jacking tool which is used for lifting a crankshaft and comprises a supporting seat and a lifting mechanism, wherein the supporting seat is arranged on a cylinder body below the crankshaft; the lifting mechanism comprises a plurality of lifting devices, the lower ends of the lifting devices are in sliding fit with the supporting seat through sliding components, the upper ends of the lifting devices are abutted to the crankshaft, the distance between the lifting devices can be adjusted through sliding fit, and therefore the application range can be further enlarged for lifting crankshafts of different models.

Description

Engine crankshaft jacking tool

Technical Field

The utility model relates to an engine repair tools technical field especially relates to an engine crankshaft jacking instrument.

Background

The crankshaft belongs to a key moving part of an engine, and the crankshaft and a main bearing bush are also a group of key friction motion pairs of the engine. However, on some large engines, the crankshaft is bulky and heavy. Because of the limited and small space of the tooling equipment, the disassembly and repair of the bearing bush of the main bearing of the crankshaft is a 'big project'. In the process of disassembling and repairing the main bearing bush of the crankshaft, the whole crankshaft needs to be lifted up and lifted firstly, and the main bearing bush is convenient to coil after a corresponding gap exists between the crankshaft and a bearing seat below the crankshaft. The existing crankshaft lifter has a small application range and cannot meet the lifting function of crankshafts of multiple sizes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an engine crankshaft jacking instrument to solve in the correlation technique, the ubiquitous application scope of bent axle lifting ware is little, can't satisfy the lifting function of many sizes bent axle.

The utility model provides an engine crankshaft jacking instrument, include:

a supporting seat;

the lifting mechanism comprises a plurality of lifting devices, the bottom ends of the lifting devices are in sliding fit with the supporting seat through sliding assemblies, and the top ends of the lifting devices are abutted to the crankshaft and used for driving the crankshaft to lift.

As the preferred technical scheme of engine crankshaft jacking instrument, slip subassembly includes slide rail and spout, the slide rail with the spout one set up in the diapire of lifting device, one set up in the supporting seat.

As a preferable technical solution of the engine crankshaft lifting tool, the engine crankshaft lifting tool further comprises a locking member for locking or unlocking a relative position of the supporting seat and the lifting mechanism.

As the preferable technical scheme of the engine crankshaft jacking tool, the locking piece is in threaded connection with the side wall of the sliding groove and abuts against the sliding rail.

As the preferable technical scheme of the engine crankshaft jacking tool, the lifting device is a hydraulic stretcher.

As the preferred technical scheme of engine crankshaft jacking instrument, lifting mechanism still includes stock solution kettle, hydraulic pump and branch liquid valve, the hydraulic pump with the stock solution kettle is connected, just the hydraulic pump still passes through branch liquid valve respectively with a plurality of hydraulic pressure elongator is connected.

As the preferable technical scheme of the engine crankshaft jacking tool, the lifting mechanism further comprises a pressure gauge, and the pressure gauge is connected with the hydraulic stretcher.

As the preferred technical scheme of engine crankshaft jacking instrument, the lifting mechanism still includes a plurality of support columns, hydraulic stretching ware includes the hydraulic stem, support column one end with the hydraulic stem spiro union, the support column other end with the bent axle butt.

As the preferable technical scheme of the engine crankshaft jacking tool, the supporting seat is further provided with a plurality of nuts, and the nuts can be selectively screwed with the supporting columns.

As the preferred technical scheme of the engine crankshaft jacking tool, the supporting seat is of an I-shaped structure.

The utility model has the advantages that:

the utility model provides an engine crankshaft jacking tool, which comprises a supporting seat and a lifting mechanism, wherein the supporting seat is arranged on a cylinder body below a crankshaft; the lifting mechanism comprises a plurality of lifting devices, and the plurality of lifting devices are arranged to prevent the problems of strain, collision or damage and the like to the crankshaft journal and the inner surface of the bearing bush caused by the deflection of the crankshaft; the lower end of the lifting device is connected with the supporting seat through the sliding assembly, the plurality of lifting devices can adjust the distance between the plurality of lifting devices through the sliding assembly, and therefore the use range can be further enlarged for lifting crankshafts of different models.

Drawings

Fig. 1 is a schematic structural diagram of an engine crankshaft jacking tool in an embodiment of the present invention;

fig. 2 is a front view of an engine crankshaft jacking tool in an embodiment of the present invention;

FIG. 3 is a side view of an engine crankshaft jacking tool according to an embodiment of the present invention;

fig. 4 is a top view of the engine crankshaft jacking tool in the embodiment of the present invention.

In the figure:

100. a crankshaft; 200. a cylinder body;

1. a supporting seat; 11. a support plate; 111. a slide rail; 12. a vertical plate; 13. a base plate; 14. a nut; 15. a reinforcing plate;

2. a lifting mechanism; 21. a lifting device; 211. a chute; 212. a hydraulic lever; 22. locking the bolt; 23. a liquid storage pot; 24. a hydraulic pump; 25. a liquid separating valve; 26. and (4) a support column.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are used in the context of a plurality of different positions, and where a first feature is "on," "over" and "above" a second feature, that includes the first feature being directly above and obliquely above the second feature, or simply means 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.

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, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect through an intermediate medium, and may be a communication between a plurality of elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the present embodiment provides an engine crankshaft jacking tool, including a supporting seat 1 and a lifting mechanism 2, where the supporting seat 1 is disposed on a cylinder 200 below a crankshaft 100; the lifting mechanism 2 comprises a plurality of lifting devices 21, and the plurality of lifting devices 21 are arranged for preventing the deflection of the crankshaft 100 from causing the problems of strain, collision or damage to the journal of the crankshaft 100 and the inner surface of a bearing bush and the like; be provided with the slip subassembly between lifting device 21 lower extreme and the supporting seat 1, the purpose that sets up the slip subassembly is a plurality of lifting devices 21 and backup pad 11 sliding fit, can adjust the interval between a plurality of lifting devices 21 through sliding fit, and then can further enlarge application range to the lifting of unidimensional bent axle 100. In this embodiment, the number of the lifting devices 21 is preferably 2.

Optionally, the sliding assembly includes a sliding rail 111 and a sliding groove 211, and the sliding rail 111 and the sliding groove 211 are disposed at the bottom end of the lifting device 21, and one is disposed at the supporting seat 1. Specifically, the slide rail 111 is located at the support base 1, and the slide groove 211 is located at the bottom end of the lifting device 21.

Preferably, the engine crankshaft jacking tool further comprises a locking member 22 for locking or unlocking the relative position of the supporting seat 1 and the lifting mechanism 2, wherein the locking member 22 is screwed on the side wall of the sliding groove 211 and abuts against the sliding rail 111. In this embodiment, the locking member 22 can fix the relative positions of the sliding rail 111 and the sliding groove 211, which is equivalent to fixing the relative positions of the lifting device 21 and the supporting plate 11.

Preferably, the slide rail 111 is a T-shaped slide rail 111, and the slide groove 211 is a T-shaped slide groove 211. In this embodiment, the sliding rail 111 and the sliding groove 211 are both configured in a T shape to limit the movement of the lifting device 21, so that the lifting device 21 can only move along the length direction of the supporting plate 11, meanwhile, the upper surface of the supporting plate 11 is provided with a frosting surface, and when the lifting device 21 is not subjected to a force along the length direction of the supporting plate 11, the sliding rail 111 and the sliding groove 211 do not move relatively.

Optionally, the lifting device 21 is a hydraulic tensioner. In this embodiment, the hydraulic stretcher is selected in this embodiment because the hydraulic stretcher has the advantages of large output thrust, stable operation, and stepless adjustment.

Optionally, the lifting mechanism 2 further includes a liquid storage pot 23, a hydraulic pump 24, and a liquid distribution valve 25, the hydraulic pump 24 is connected to the liquid storage pot 23, and the hydraulic pump 24 is further connected to the plurality of hydraulic tensioners through the liquid distribution valve 25. In this embodiment, the number of the hydraulic stretchers is two, so the liquid separating valve 25 is a three-way valve, when the hydraulic stretchers need thrust to jack up the crankshaft 100, the hydraulic pump 24 changes the hydraulic oil in the liquid storage pot 23 from low-pressure oil to high-pressure oil to be supplied to the hydraulic stretchers, and at this time, the hydraulic stretchers obtain the thrust and jack up the crankshaft 100; when it is desired to lower the crankshaft 100, the hydraulic tensioner is not requiring thrust, at which point the hydraulic pump 24 is deactivated and high pressure oil is gradually returned to the reservoir 23. When a pause at a certain position is required, the hydraulic pump 24 stops working, and the three-way valve 25 is in the off state.

Optionally, the lifting mechanism 2 further comprises a pressure gauge connected to the hydraulic stretcher for measuring a pressure value of the hydraulic stretcher. In this embodiment, the pressure gauge is used for measuring the pressure value of the hydraulic tensioner at this time corresponding to the clearance of the bearing, and is used for future reference.

Optionally, the lifting mechanism 2 further comprises a plurality of support columns 26, the hydraulic stretcher comprises a hydraulic rod 212, one end of each support column 26 is in threaded connection with the hydraulic rod 212, and the other end of each support column 26 abuts against the crankshaft 100. In this embodiment, if the hydraulic rod 212 of the hydraulic stretcher reaches the maximum extension value, and the hydraulic rod 212 does not abut against the crankshaft 100 or reaches the height of the lifted crankshaft 100, the supporting column 26 may be screwed with the hydraulic rod 212, so as to increase the extension range.

Optionally, the supporting seat 1 is in an i-shaped structure. In this embodiment, the supporting seat 1 includes a supporting plate 11, a vertical plate 12 and a bottom plate 13, the two ends of the vertical plate 12 are respectively connected to the bottom plate 13 and the supporting plate 11, and the support seat 1 shaped like an i has the advantages of wide flange, large lateral rigidity, strong bending resistance and small residual stress, so that the support seat 1 shaped like an i has good mechanical properties.

Optionally, the support base 1 is further provided with a plurality of nuts 14, and the nuts 14 can be selectively screwed with the support columns 26. In this embodiment, the nuts 14 are respectively disposed on two sides of the vertical plate 12, and when the supporting column 26 is not used, the supporting column 26 is screwed with the nuts 14. When the support column 26 is not used, the support column 26 is screwed with the nut 14, so that the support column 26 can be prevented from being lost, and the nut 14 plays a role in accommodating the support column 26.

Optionally, the support base 1 further comprises a plurality of reinforcing plates 15, each connecting the support plate and the bottom plate. In this embodiment, the reinforcing plate 15 can further enhance the strength of the supporting seat 1, and specifically, the reinforcing plate 15 can be perpendicular to the vertical plate 12 or parallel to the vertical plate 12.

The device comprises the following specific use steps:

the first step is as follows: the supporting base 1 is placed on the cylinder 200 below the crankshaft 100, the positions of the plurality of hydraulic stretchers are adjusted, the hydraulic rod 212 is opposite to the crank of the crankshaft 200, the liquid storage pot 23 is connected with the hydraulic pump 24, and the hydraulic pump 24 is connected with the plurality of hydraulic stretchers through the liquid separating valve 25. The hydraulic pump 24 increases the oil pressure in the hydraulic stretcher to cause the hydraulic rod 212 to raise the crankshaft 100. And recording the gap between the corresponding bearing seat and the bearing bush and the pressure value of the oil at the moment for future reference.

Secondly, checking whether a gap exists between the adjacent journal and the bearing bush or between the bearing bush and the bearing block after the crankshaft 100 is lifted, ensuring that the lower bearing bush can move freely, and adjusting the position of the hydraulic stretcher again until the crankshaft 100 is lifted correctly; if the crankshaft 100 is not lifted to a proper position after the hydraulic stretcher reaches the maximum telescopic range or the hydraulic rod 212 cannot abut against the crankshaft 100, the telescopic range of the hydraulic stretcher can be enlarged by screwing a support column 26 on the hydraulic rod 212, so that the crankshaft 100 is lifted to a proper height.

And thirdly, pulling the lower bearing bush up and down around until the lower bearing bush is adjusted to the position above the main journal, and then loosening the bearing cover to take out the bearing cover.

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

1. An engine crankshaft jacking tool, comprising:

a support base (1);

lifting mechanism (2), lifting mechanism (2) include a plurality of lifting devices (21), and are a plurality of the bottom of lifting device (21) all with supporting seat (1) passes through sliding assembly sliding fit, the top and bent axle (100) butt of lifting device (21), and be used for the drive bent axle (100) goes up and down.

2. The engine crankshaft jacking tool of claim 1, wherein said sliding assembly comprises a sliding rail (111) and a sliding slot (211), said sliding rail (111) and said sliding slot (211) being provided one at the bottom wall of said lifting device (21) and one at said supporting seat (1).

3. The engine crankshaft jacking tool according to claim 2, further comprising a lock (22) for locking or unlocking the relative position of the support base (1) and the lifting mechanism (2).

4. The engine crankshaft jacking tool of claim 3, wherein said locking member (22) is screwed to a side wall of said sliding groove (211) and abuts against said sliding rail (111).

5. The engine crankshaft jacking tool of claim 1, wherein said lifting device (21) is a hydraulic tensioner.

6. The engine crankshaft jacking tool of claim 5, wherein said lifting mechanism (2) further comprises a liquid storage pot (23), a hydraulic pump (24) and a liquid dividing valve (25), said hydraulic pump (24) being connected to said liquid storage pot (23), and said hydraulic pump (24) being further connected to a plurality of said hydraulic stretchers through said liquid dividing valve (25), respectively.

7. The engine crankshaft jacking tool of claim 5, wherein said lifting mechanism (2) further comprises a pressure gauge connected to said hydraulic tensioner.

8. The engine crankshaft jacking tool of claim 5, wherein the lifting mechanism (2) further comprises a plurality of support posts (26), the hydraulic tensioner comprises a hydraulic rod (212), one end of the support post (26) is in threaded connection with the hydraulic rod (212), and the other end of the support post (26) abuts against the crankshaft (100).

9. The engine crankshaft jacking tool of claim 8, wherein said support seat (1) is further provided with a plurality of nuts (14), said nuts (14) being selectively threadably engaged with said support post (26).

10. The engine crankshaft jacking tool of claim 1, wherein said support seat is of an "I" configuration.