CN111704023A - Hoisting tool and method for dual-fuel diesel engine cylinder body - Google Patents
Hoisting tool and method for dual-fuel diesel engine cylinder body Download PDFInfo
- Publication number
- CN111704023A CN111704023A CN202010593807.6A CN202010593807A CN111704023A CN 111704023 A CN111704023 A CN 111704023A CN 202010593807 A CN202010593807 A CN 202010593807A CN 111704023 A CN111704023 A CN 111704023A
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- Prior art keywords
- hole
- support
- hoisting
- lifting
- glan
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
Abstract
A hoisting tool and a method for a dual-fuel diesel engine cylinder body are provided with a Glan hole, and the hoisting tool comprises a shaft, a bracket, a lifting lug, a spring, a steel ball and a nut; the support is provided with a supporting surface, a positioning surface and a conical guide surface, the support is provided with an arc guide rail groove, the center and two side ends of the arc guide rail groove are respectively provided with a hemispherical groove, the outer side surface of the shaft sleeve is provided with a cylindrical blind hole, the support and the lifting lug are hinged together in a relatively rotating manner through a shaft and a nut, the spring and the steel ball are arranged in the cylindrical blind hole, and under the action of the spring, the steel ball respectively protrudes into the three hemispherical grooves to lock the support and the lifting lug at three different relative positions; the guide surface of the support guides the positioning surface to enter the Glan hole and achieve automatic centering, and the supporting surface is attached to the end surface of the Glan hole, so that the hoisting tool and the center of gravity of the steel wire rope and the cylinder body are located on the same vertical line, and the automatic positioning and stable hoisting of the cylinder body are achieved. The invention has the functions of automatic centering and self-locking, improves the production efficiency, eliminates the potential safety hazard and improves the operating conditions.
Description
Technical Field
The invention relates to the carrying of large diesel engine parts, in particular to a hoisting tool and a hoisting method for a dual-fuel diesel engine cylinder body, and belongs to the technical field of hoisting.
Background
The cylinder block of the WinGD 12X92-DF large dual-fuel low-speed diesel engine is a main component of the engine and consists of 12 single cylinders and 1 middle cylinder, wherein each single cylinder weighs about 23 tons. For the lifting of a single cylinder of a cylinder body in the processes of machining, assembling and lightering, no special tool and method capable of quickly loading and unloading and stably lifting exist at present. Referring to fig. 7, the conventional hoisting method is to manually hoist a steel wire rope C through an O-shaped hole a1 on the connecting surface of the cylinder block or a waist-shaped door frame a2 on the exhaust side and the cam side. When the cylinder body A is lifted, the steel wire rope C is extruded and sheared with the sharp edge of the O-shaped hole A1 or the waist-shaped door frame A2 under the action of the gravity of the cylinder body A, and the steel wire rope C has potential safety hazards of being sheared under the action of shearing force; in addition, because the cylinder body A has a large volume and unstable hoisting gravity center, the cylinder body A and the steel wire rope C are easy to slide and shake relatively, and potential safety hazards also exist; meanwhile, the lifting worker has high labor intensity and low production efficiency in the lifting operation process.
Disclosure of Invention
The invention mainly aims to overcome the defects of the traditional hoisting method for the large diesel engine cylinder block, and provides a simple, efficient, safe and convenient hoisting tool and method for the dual-fuel diesel engine cylinder block according to the structural characteristics of the cylinder block.
In order to achieve the above object, the technical solution of the present invention is as follows:
a hoisting tool for a cylinder block of a dual-fuel diesel engine is characterized in that the cylinder block is a box-type part, a Glan hole is formed in the upper plane, a cylinder sleeve hole coaxial with the Glan hole is formed in the lower plane, and the center of gravity of the cylinder block is located on the axis line of the Glan hole and the cylinder sleeve hole; the method is characterized in that: the lifting tool is hung on a steel wire rope and connected with the cylinder body, and comprises a shaft, a support, a lifting lug and a nut;
the support is a symmetrical hollow frame-shaped component, a horizontal supporting surface and a positioning surface which is vertically arranged on the supporting surface are arranged on the front side and the rear side of the support, the arc surface of the positioning surface is matched with the inner wall of the Glan hole, a raised conical guide surface is arranged above the positioning surface, the guide surface corresponds to the Glan hole to play a role in automatic centering, and circular ring sleeves are arranged on the left side and the right side of the support and provided with shaft holes; the lifting lug comprises a rib plate and a shaft sleeve, the rib plate is provided with a lifting hole, and the shaft sleeve is provided with a central hole; the shaft and the nut can hinge the bracket and the lifting lug together in a relatively rotating manner through the shaft hole of the circular ring sleeve and the central hole of the shaft sleeve;
the guide surface of the support guides the positioning surface to enter the Glan hole and achieve automatic centering, and the supporting surface of the support is attached to the end surface of the Glan hole, so that the hoisting tool and the center of gravity of the steel wire rope and the cylinder body are located on the same vertical line, and the cylinder body is automatically positioned and hoisted stably.
Furthermore, the hoisting tool also comprises a spring and a steel ball; be equipped with circular arc guide rail recess on the relative medial surface of the ring cover of support, the central authorities and the both sides end of this circular arc guide rail recess respectively are equipped with a hemisphere face recess, two lateral surfaces of axle sleeve respectively are equipped with a cylinder blind hole, the position of this cylinder blind hole with circular arc guide rail recess on the ring cover is corresponding, spring and steel ball set gradually from inside to outside in the cylinder blind hole, the steel ball can break into respectively in the three hemisphere face recess of support medial surface under the effect of spring, will relative position between support and the lug locks respectively on three different positions.
Further, the locking force of the relative position of the bracket and the lifting lug depends on the elastic force of the spring.
Furthermore, the depth of the semi-spherical surface groove is greater than that of the arc guide rail groove and less than the radius of the steel ball.
The other technical scheme for solving the technical problem of the invention is as follows:
a hoisting method for a dual-fuel diesel engine cylinder body by adopting the hoisting tool comprises the following steps:
1) the lifting lugs and the support are rotated to form an oblique angle, so that the relative positions of the lifting lugs and the support are locked at the position where the steel ball is embedded into the hemispherical groove at the side end of the arc guide rail groove, and the lifting tool penetrates through the flange hole along the axis and is placed into the cylinder body by using a steel wire rope;
2) overcoming the locking force between the bracket and the lifting lug, rotating the bracket to the horizontal position, enabling the bracket to be vertical to the lifting lug, and locking the bracket at the position where the steel ball is embedded into the hemispherical groove in the center of the arc guide rail groove;
3) hoisting the hoisting tool along the axis of the Glan hole through a steel wire rope;
4) the guide surface guides the positioning surface to enter the Glan hole, the hoisting tool is automatically centered, the supporting surface is completely attached to the end surface of the Glan hole, the hoisting tool and the steel wire rope are positioned on the same vertical line with the center of gravity of the cylinder block, and the cylinder block is hoisted;
5) after the cylinder block is hoisted to a preset place, the support and the lifting lug are relatively rotated, so that the steel ball returns to the central hemispherical groove and is locked, and then the hoisting tool is hoisted out of the flange hole along the axis, and thus the hoisting operation of the cylinder block is completed.
Compared with the prior art, the invention has the beneficial effects that:
1) the hoisting tool is simple and compact in structure, safe, reliable, convenient to operate, labor-saving, efficient and beneficial to maintenance.
2) The hoisting tool is strong in universality and can be suitable for hoisting operation of single cylinders of large diesel engine cylinder bodies of various models.
3) The hoisting tool adopts a locking mechanism consisting of a steel ball, a spring, a hemispherical groove and an arc guide rail groove, and the hoisting tool is automatically guided to be positioned by utilizing the conical guide surface, so that the hoisting tool has self-locking and automatic centering functions, thereby greatly reducing the difficulty of hoisting operation, simplifying the operation flow, lightening the labor intensity, improving the operation condition and improving the production efficiency.
4) The invention can avoid the bending deformation and relative sliding of the steel wire rope, prevent the cylinder body from shaking due to unstable gravity center, avoid the potential safety hazard that the steel wire rope is sheared off under the action of shearing force, prolong the service life of the steel wire rope, achieve stable and safe lifting and improve the safety of operation.
Drawings
FIG. 1 is an exploded schematic view of the structure of the present invention.
Fig. 2 is an enlarged view of a portion D of fig. 1.
Fig. 3 is a view in the direction E of fig. 1.
Fig. 4 is a perspective view of the structure of the present invention.
Fig. 5 is a sectional view H-H of fig. 4.
Fig. 6 is an enlarged view of a portion F of fig. 5.
Fig. 7 is a schematic view of the lifting state of the invention.
Fig. 8 is a diagram of the operation steps of the hoisting method of the present invention.
Fig. 9 is an enlarged view of the portion P of fig. 8.
FIG. 10 is a schematic side sectional view of a half shaft of the lifting step 4) of the invention.
In the figure:
a-cylinder block, B-handling frock, C-wire rope, A1-O type hole, A2-waist type door frame, A3-glan hole, A3-1-glan hole inner wall, A3-2-glan hole terminal surface, B1-axle, B2-support, B3-lug, B4-nut, B5-spring, B6-steel ball, B2-1-guide surface, B2-2-locating surface, B2-3-bearing surface, B2-4-ring cover, K-cylinder blind hole, U-hemisphere face recess, V-hemisphere face recess, W-hemisphere face recess.
Detailed Description
The invention is further illustrated in the following detailed description with reference to the figures and specific examples, which should not be taken to limit the scope of the invention.
The lifting tool B is used for lifting a cylinder body of a dual-fuel diesel engine, please refer to fig. 7, the cylinder body A is a box-shaped part, a Glan hole A3 is formed in the upper plane, a cylinder sleeve hole is formed in the lower plane, the Glan hole A3 is coaxial with the cylinder sleeve hole, and the center of gravity of the cylinder body A is located on the axis G of the two holes, as shown in fig. 10. The lifting tool B is connected with the cylinder body A and is hung on the steel wire rope C together with the cylinder body A. The lifting tool B is matched with the inner wall A3-1 of the Glan hole in shape, and the lifting operation of binding the steel wire rope C by the cylinder body A which originally has an irregular shape is converted into a part of the steel wire rope C, the lifting tool B and the center of gravity G of the cylinder body A on the same vertical line to be lifted.
Referring to fig. 1, 2, 3, 4 and 7, a hoisting tool B of the cylinder block is suspended at the lower end of a steel cable C, and includes 1 shaft B1, 1 bracket B2, 1 lifting lug B3, 1 nut B4, 2 springs B5 and 2 steel balls B6.
Referring to fig. 4, the support B2 is a hollow rectangular frame-shaped member with a symmetrical structure; the front side and the rear side of the rectangular frame are provided with horizontal step type bearing surfaces B2-3 which are used as the bearing surfaces of the cylinder body A during hoisting; the inner side of the supporting surface B2-3 is provided with a vertical arc positioning surface B2-2, and the positioning arc surface of the positioning surface B2-2 is matched with the inner wall of the Glan hole A3; a raised conical guide surface B2-1 is arranged above the positioning surface B2-2, the guide surface B2-1 corresponds to the Glan hole A3, and the cylinder body A can be automatically centered during lifting.
The left side and the right side of the rectangular frame of the bracket B2 are respectively provided with a circular sleeve B2-4, and the center of the circular sleeve B2-4 is provided with a shaft hole connected with the shaft B1. Referring to fig. 1 and 3, the two circular ring sleeves B2-4 are provided with arc guide grooves on opposite inner side surfaces, the arc guide grooves are provided with a hemispherical groove V at the center and hemispherical grooves U and W at both side ends; the depths of the hemispherical groove U, the hemispherical groove V and the hemispherical groove W are greater than the depth of the arc guide rail groove and less than half of the diameter of the steel ball B6.
Referring to fig. 1, the lifting lug B3 is an integral member composed of a rib plate at the upper part and a cylindrical sleeve connected to the lower part of the rib plate. And the rib plate is provided with a circular lifting hole for connecting a steel wire rope. The shaft sleeve is provided with a central hole for the shaft B1 to pass through, two outer side surfaces of the shaft sleeve are respectively provided with a cylindrical blind hole K, and the position of the cylindrical blind hole K corresponds to the arc guide rail groove on the circular ring sleeve B2-4 of the bracket B2. Referring to fig. 1, 2, 5 and 6, the spring B5 is disposed in the cylindrical blind hole K and one end of the spring B5 is against the bottom of the cylindrical blind hole K, and the steel ball B6 is mounted outside the spring B5 and protrudes out of the opening of the cylindrical blind hole K.
One end of the shaft B1 is in a hexagonal nut shape, and the other end is provided with threads. The shaft B1 is inserted into the shaft hole of the circular sleeve B2-4 of the bracket B2 and the central hole of the shaft sleeve of the lifting lug B3, the bracket B2 and the lifting lug B3 are rotatably hinged together, and the bracket B2 and the lifting lug B3 can rotate around the shaft B1 and perform relative rotary motion. The nut B4 is connected to one end of the shaft B1.
The two steel balls B6 can respectively protrude into a hemispherical groove U, a hemispherical groove V or a hemispherical groove W on the inner side surface of the bracket B2, and one half of the steel balls B6 still remain in the cylindrical blind hole K of the lifting lug B3, and under the action of the elastic force of the spring B5, the relative positions of the bracket B2 and the lifting lug B3 are respectively locked at the three positions. The magnitude of the elastic force of the spring B5 determines the magnitude of the locking force (rotational torsion). When the lifting lug B3 and the bracket B2 rotate relatively around the shaft B1, the steel ball B6 is separated from the hemispherical groove, the spring B5 is compressed under the extrusion of the arc guide rail groove, and rolls along the arc guide rail groove under the action of the rotating torque until sinking into the other hemispherical groove, and a new position is locked.
Referring to fig. 8, the hoisting method for the dual-fuel diesel engine cylinder block by using the hoisting tool includes the following steps:
1) the lifting lug B3 and the bracket B2 are mutually rotated, so that the relative positions of the lifting lug B3 and the bracket B2 are locked at the position where the steel ball B6 is embedded into the hemispherical groove W or the hemispherical groove U, namely the lifting lug B3 and the bracket B2 form an oblique angle; and connecting the lifting lug B3 of the lifting tool with a steel wire rope C, and penetrating through the Glan hole A3 from top to bottom along the axis of the Glan hole A3 of the cylinder block A to be placed in the cylinder block A.
2) The lifter overcomes the locking force between the bracket B2 and the lifting lug B3 through an O-shaped hole A1 of the cylinder block A or a waist-shaped door frame A2, manually rotates and adjusts the bracket B2 to be horizontal and locked, namely the bracket B2 and the lifting lug B3 are perpendicular to each other, and the position where the steel ball B6 is embedded into the hemispherical groove V is locked.
3) Slowly lifting the lifting tool B along the axis of the Glan hole A3 through a steel wire rope C;
4) with reference to fig. 9, when the guide surfaces B2-1 on the front and rear sides of the lifting tool B enter the glan hole A3, the guide function is performed, so that the positioning surface B2-2 enters the glan hole inner wall A3-1 along the guide surfaces and is quickly and automatically centered, and finally the supporting surface B2-3 of the lifting tool B is completely attached to the glan hole end surface A3-2; at this time, the steel wire rope C, the lifting tool B and the center of gravity G of the cylinder block a are exactly located on the same vertical line, and referring to fig. 10, the cylinder block a can be lifted.
5) After the cylinder block A is lifted to a preset place, the lifting tool B is put down along the axis of the Glan hole A3, the support B2 and the lifting lug B3 are rotated relatively, the steel ball B6 returns to the original hemispherical groove U or hemispherical groove W and is locked, and the lifting tool B is lifted out of the Glan hole A3 along the axis, so that the lifting operation of the cylinder block A is completed.
The invention adopts a mechanism consisting of the steel ball, the spring, the semi-spherical groove and the arc guide rail groove, realizes the position locking of the hoisting tool, avoids the potential safety hazard caused by the free rotation of the hoisting tool, and simultaneously utilizes the conical guide surface to automatically guide the hoisting tool to be positioned in the Glan hole, thereby greatly simplifying the operation procedure, converting the original mode of directly hoisting the cylinder block by using the steel wire rope into the hoisting method by using the tool, and achieving the purposes of simple, convenient and safe hoisting operation.
The invention obviously reduces the labor intensity of operators on one hand, improves the production efficiency on the other hand, ensures safer operation, eliminates potential safety hazards and achieves the effects of quick positioning, loading and unloading of the tool and stable hoisting of the cylinder body.
The scope of the invention is not limited to the above embodiments, but also includes other obvious variations and alternatives, and all equivalent variations and modifications made according to the content of the invention are within the scope of the invention.
Claims (5)
1. A hoisting tool for a cylinder block of a dual-fuel diesel engine is characterized in that the cylinder block is a box-type part, a Glan hole is formed in the upper plane, a cylinder sleeve hole coaxial with the Glan hole is formed in the lower plane, and the center of gravity of the cylinder block is located on the axis line of the Glan hole and the cylinder sleeve hole; the method is characterized in that: the lifting tool is hung on a steel wire rope and connected with the cylinder body, and comprises a shaft, a support, a lifting lug and a nut;
the support is a symmetrical hollow frame-shaped component, a horizontal supporting surface and a positioning surface which is vertically arranged on the supporting surface are arranged on the front side and the rear side of the support, the arc surface of the positioning surface is matched with the inner wall of the Glan hole, a raised conical guide surface is arranged above the positioning surface, the guide surface corresponds to the Glan hole to play a role in automatic centering, and circular ring sleeves are arranged on the left side and the right side of the support and provided with shaft holes; the lifting lug comprises a rib plate and a shaft sleeve, the rib plate is provided with a lifting hole, and the shaft sleeve is provided with a central hole; the shaft and the nut can hinge the bracket and the lifting lug together in a relatively rotating manner through the shaft hole of the circular ring sleeve and the central hole of the shaft sleeve;
the guide surface of the support guides the positioning surface to enter the Glan hole and achieve automatic centering, and the supporting surface of the support is attached to the end surface of the Glan hole, so that the hoisting tool and the center of gravity of the steel wire rope and the cylinder body are located on the same vertical line, and the cylinder body is automatically positioned and hoisted stably.
2. The hoisting tool for the dual-fuel diesel engine cylinder block of claim 1, is characterized in that: the lifting tool further comprises a spring and a steel ball; be equipped with circular arc guide rail recess on the relative medial surface of the ring cover of support, the central authorities and the both sides end of this circular arc guide rail recess respectively are equipped with a hemisphere face recess, two lateral surfaces of axle sleeve respectively are equipped with a cylinder blind hole, the position of this cylinder blind hole with circular arc guide rail recess on the ring cover is corresponding, spring and steel ball set gradually from inside to outside in the cylinder blind hole, the steel ball can break into respectively in the three hemisphere face recess of support medial surface under the effect of spring, will relative position between support and the lug locks respectively on three different positions.
3. The hoisting tool for the dual-fuel diesel engine cylinder block of claim 2, is characterized in that: the locking force of the relative position of the bracket and the lifting lug depends on the elastic force of the spring.
4. The hoisting tool for the dual-fuel diesel engine cylinder block of claim 2, is characterized in that: the depth of the semi-spherical surface groove is greater than that of the arc guide rail groove and less than the radius of the steel ball.
5. A hoisting method of a dual-fuel diesel engine cylinder body realized by adopting the hoisting tool of claim 2 is characterized in that: the hoisting method comprises the following steps:
1) the lifting lugs and the support are rotated to form an oblique angle, so that the relative positions of the lifting lugs and the support are locked at the position where the steel ball is embedded into the hemispherical groove at the side end of the arc guide rail groove, and the lifting tool penetrates through the flange hole along the axis and is placed into the cylinder body by using a steel wire rope;
2) overcoming the locking force between the bracket and the lifting lug, rotating the bracket to the horizontal position, enabling the bracket to be vertical to the lifting lug, and locking the bracket at the position where the steel ball is embedded into the hemispherical groove in the center of the arc guide rail groove;
3) hoisting the hoisting tool along the axis of the Glan hole through a steel wire rope;
4) the guide surface guides the positioning surface to enter the Glan hole, the hoisting tool is automatically centered, the supporting surface is completely attached to the end surface of the Glan hole, the hoisting tool and the steel wire rope are positioned on the same vertical line with the center of gravity of the cylinder block, and the cylinder block is hoisted;
5) after the cylinder block is hoisted to a preset place, the support and the lifting lug are relatively rotated, so that the steel ball returns to the central hemispherical groove and is locked, and then the hoisting tool is hoisted out of the flange hole along the axis, and thus the hoisting operation of the cylinder block is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010593807.6A CN111704023A (en) | 2020-06-28 | 2020-06-28 | Hoisting tool and method for dual-fuel diesel engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010593807.6A CN111704023A (en) | 2020-06-28 | 2020-06-28 | Hoisting tool and method for dual-fuel diesel engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111704023A true CN111704023A (en) | 2020-09-25 |
Family
ID=72543506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010593807.6A Pending CN111704023A (en) | 2020-06-28 | 2020-06-28 | Hoisting tool and method for dual-fuel diesel engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111704023A (en) |
-
2020
- 2020-06-28 CN CN202010593807.6A patent/CN111704023A/en active Pending
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