Crankshaft shrinkage fit putting-down device

Abstract

The utility model relates to a crankshaft shrinkage fit putting-down device which comprises a core rod, a positioning assembly and two clamping plate assemblies. An annular clamping ring is arranged on the peripheral face of the end, used for being inserted into the opening position in the crank throw from a center hole in the end of the crankshaft, of the core rod. The thickness of the positioning assembly is matched with that of a crank throw inner opening, and one side of the positioning assembly is provided with an arch-shaped notch matched with a crankshaft connecting rod journal; the two clamping plate assemblies can be detachably spliced into a flat plate through bolts, and two lifting lugs are symmetrically arranged on the two sides of one clamping plate assembly. The edges of the clamping plate assemblies are each provided with a semicircular notch, and hoop parts matched with the clamping rings in a concave-convex mode are arranged on the circumferential faces of the notches. On the flat plate, the notches are combined to form a round hole which can be hooped on the peripheral surface of the core rod, the hooping part is in concave-convex fit with the clamping ring, and the flat plate is provided with a positioning part matched with the other side, opposite to the arch-shaped notches, of the positioning assembly in shape. The crankshaft hoisting tool has the advantages of simple structure, convenience in assembly with the crankshaft, high hoisting efficiency, good safety, stability in hoisting and no damage to the crankshaft.

Description

Technical Field

[0001] The utility model relates to an auxiliary workpiece for crankshaft machining, in particular to a crankshaft red sleeve laying device. Background Art

[0002] During the manufacturing process, the crankshaft needs to be hoisted and transferred many times. For large crankshafts, due to their large size and heavy weight, the requirements for hoisting equipment are extremely high. For example, the net weight of the crankshaft model 6G70ME-C reaches 153230kg, the center hole size is 150mm, and the inner opening size of the crank is 248mm.

[0003] The utility model patent with application number 201520981875.4 discloses a crankshaft hoisting tool, including a mandrel, a hanging sleeve shorter than the mandrel and sleeved on the mandrel, and the hanging sleeve is fixed to the middle position of the mandrel by a positioning piece. The mandrel is inserted into the center hole of the crankshaft, and the hanging sleeve is installed on the mandrel from the inner opening of the crank, thereby realizing the crankshaft hoisting. However, this structure either uses two hoisting tools to hoist horizontally at the cranks at both ends of the crankshaft, or uses one hoisting tool to hoist obliquely at the crank at one end of the crankshaft, and it is impossible to realize the vertical hoisting of the crankshaft.

[0004] The invention patent with application number CN201911197631.6 discloses another type of sling, the main body of which is a hanging plate made of a U-shaped metal plate, each of the two ends of the opening of the hanging plate is hinged with a baffle, and the two baffles are detachably connected to the other end hinged to the hanging plate; the inner side of the hanging plate is also formed with a semi-cylindrical hoop portion at the bottom of the groove facing the opening, which is used to conflict with the crankshaft main journal during operation. Two lifting ears are symmetrically arranged on the outside of the hanging plate. This structure can also only realize the inclined lifting of the crankshaft, and due to the large mass of the crankshaft and the high surface accuracy requirements, the sling may cause damage to the crankshaft.

[0005] Therefore be necessary to improve the prior art. Utility Model Content

[0006] The purpose of the embodiment of the utility model is to address the shortcomings of the prior art structure and to propose a crankshaft red sleeve folding device, which fixes the mandrel at the center hole of the crankshaft through the cooperation of the mandrel and the clamping plate assembly, so as to realize vertical lifting of the crankshaft. It has the advantages of simple structure, convenient assembly with the crankshaft, high lifting efficiency, good safety, stable lifting and no damage to the crankshaft.

[0007] In order to achieve the above-mentioned utility model purpose, a crankshaft red sleeve laying device proposed in the utility model embodiment is realized by the following technical scheme:

[0008] A crankshaft red sleeve folding device, characterized by comprising:

[0009] A mandrel adapted to the shape of the center hole of the crankshaft, which is used to be inserted from the center hole of the crankshaft end into the inner opening of the crankshaft, and an annular retaining ring is provided on the outer peripheral surface of one end; the retaining ring is an annular protrusion and / or groove;

[0010] The positioning component has a thickness adapted to the inner opening of the crankshaft, and one side of the positioning component has an arched notch matched with the crankshaft connecting rod journal;

[0011] Two clamping plate assemblies with thicknesses matching the inner opening of the crank are detachably spliced ​​into a flat plate by bolts, and two lifting ears are symmetrically arranged on both sides of one of the clamping plate assemblies; a semicircular notch is provided on the edge of each clamping plate assembly, and a clamping part that matches the concave and convex of the retaining ring is provided on the circumferential surface of the notch; on the flat plate, the notch combination constitutes a circular hole that can be clamped on the outer circumferential surface of the core rod and the clamping part and the retaining ring match the concave and convex, and the flat plate is provided with a positioning part that matches the shape of the other side of the arc-shaped notch relative to the positioning assembly; when the arc-shaped notch abuts against the crankshaft connecting rod journal and the positioning part abuts against the positioning assembly, the circular hole and the crankshaft center hole are coaxial, and the two lifting ears extend out of the inner opening of the crank and are symmetrical relative to the axis of the crankshaft center hole.

[0012] The two splint assemblies are a large splint assembly and a small splint assembly; a first notch is formed on one side of the large splint assembly and matches the shape of the other side of the arched notch of the positioning assembly, and a second notch is formed on the other side of the large splint assembly and matches the shape of the small splint assembly, a semicircular notch is provided in the middle of the second notch, and the two ears are formed on the large splint assembly.

[0013] Two lifting ears are symmetrically arranged on the outer side of the other end of the core rod relative to the clamping ring.

[0014] The clamping ring is an annular groove.

[0015] The clamping ring is an annular protrusion.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model proposes a crankshaft red sleeve folding device, which fixes the mandrel at the center hole of the crankshaft through the cooperation of the mandrel and the clamping plate assembly, so as to realize vertical lifting of the crankshaft, and has the advantages of simple structure, convenient assembly with the crankshaft, high lifting efficiency, good safety, stable lifting, and no damage to the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above features and advantages of the present invention will become clearer and easier to understand through the following description of exemplary embodiments thereof in conjunction with the accompanying drawings.

[0018] Figure 1 This is a front view of the crankshaft red sleeve folding device according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The terms such as "front", "rear", "left", "right", "inside", "outside" etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of application of the present invention. Changes or adjustments to their relative relationships shall be regarded as within the scope of application of the present invention without substantially changing the technical content.

[0022] In the description of the following embodiments, unless otherwise clearly specified and limited, the terms such as "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0023] See Figure 1-2 As shown, the embodiment of the utility model provides a crankshaft red sleeve folding device, comprising:

[0024] Mandrel 1

[0025] The main body of the mandrel 1 is a cylinder, which is adapted to the shape of the center hole of the crankshaft and can be inserted into the center hole of the crankshaft with clearance fit. Two lifting ears 11 are symmetrically arranged on the outer side of the first end, and the second end is used to be inserted from the center hole of the end of the crankshaft 3 to the inner opening of the crank, and an annular clamping ring 12 is arranged on the outer peripheral surface of the second end located at the inner opening of the crank.

[0026] Positioning component 2

[0027] The thickness of the positioning component 2 is adapted to the inner opening of the crankshaft, and one side thereof has an arched notch 21 that matches the crankshaft connecting rod journal;

[0028] Large splint assembly 3 and small splint assembly 4

[0029] The small clamping plate assembly 4 is roughly a rectangular steel plate with a thickness that matches the inner opening of the crank. A semicircular notch 41 is respectively provided on one side edge thereof.

[0030] The thickness of the large clamping plate component 3 is adapted to the inner opening of the crank, and a first notch is provided on one side thereof to match the shape of the other side of the positioning component 2 relative to the arcuate notch 21. A second notch is provided on the other side relative to the first notch to match the shape of the small clamping plate component 4, and a semicircular notch 31 is provided in the middle of the second notch. A hoop portion that matches the concave-convex with the clamping ring 12 is provided on the circumference of the semicircular notch 31 and the semicircular notch 41.

[0031] When the small splint assembly 4 is spliced ​​to the second notch, the through holes provided on the two correspond and can be connected into a flat plate by bolts 5. At this time, the semicircular notch 31 and the semicircular notch 41 are combined to form a circular hole that can be clamped on the outer circumference of the core rod 1, and the clamping part and the clamping ring 12 are matched with each other.

[0032] The purpose of the clamping ring and the hoop part is to restrict the displacement of the core rod 1 in the length direction of the crankshaft center hole. Therefore, any clamping ring 12 structure that can achieve this function can be used here, for example, the clamping ring 12 is an annular protrusion, an annular groove, or a combination of a groove and a protrusion.

[0033] Two lifting ears 32 are symmetrically arranged on both sides of the large clamping plate assembly 3 .

[0034] When the arched notch of the positioning assembly 2 abuts against the crankshaft connecting rod journal, and the first notch of the large clamping plate assembly 3 and the positioning assembly are matched, the circular hole formed by the semicircular notch 33 and the semicircular notch 41 is coaxial with the crankshaft center hole, and the two ears 34 extend out of the inner opening of the crank and are symmetrical relative to the axis of the crankshaft center hole.

[0035] When in use, first insert the positioning assembly 2 into the crankshaft and make the arched notch abut against the crankshaft connecting rod journal;

[0036] Then, insert the large clamping plate assembly 3 into the crank to make the first notch 3 of the clamping plate assembly 3 and the positioning assembly concave-convex fit;

[0037] Then the mandrel 1 is inserted into the center hole;

[0038] Then, the small clamping plate assembly 4 is inserted into the crank to open the gap, and clamped on the core rod 1, and then the two clamping plate assemblies are connected by bolts to complete the installation of the sling.

[0039] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model proposes a crankshaft red sleeve folding device, which fixes the mandrel at the center hole of the crankshaft through the cooperation of the mandrel and the clamping plate assembly, so as to realize vertical lifting of the crankshaft, and has the advantages of simple structure, convenient assembly with the crankshaft, high lifting efficiency, good safety, stable lifting, and no damage to the crankshaft.

[0040] The utility model intention and implementation methods of the utility model are described in detail through the embodiments above. However, a person skilled in the art in the field to which the utility model belongs can understand that the above embodiment of the utility model is only one of the preferred embodiments of the utility model. Due to space limitations, not all implementation methods can be listed here one by one. Any implementation that can embody the technical solution of the claims of the utility model is within the protection scope of the utility model.

[0041] It should be noted that the above content is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation method of the present invention is limited to this. Under the guidance of the above embodiments, technical personnel in this field can make various improvements and deformations on the basis of the above embodiments, and these improvements or deformations fall within the protection scope of the present invention.

Claims

1. A crankshaft red sleeve folding device, characterized in that: include: A mandrel adapted to the shape of the center hole of the crankshaft, which is used to be inserted from the center hole of the crankshaft end into the inner opening of the crankshaft, and an annular retaining ring is provided on the outer peripheral surface of one end; the retaining ring is an annular protrusion and / or groove; The positioning component has a thickness adapted to the inner opening of the crankshaft, and one side of the positioning component has an arched notch matched with the crankshaft connecting rod journal; Two clamping plate assemblies with thicknesses matching the inner opening of the crank are detachably spliced ​​into a flat plate by bolts, and two lifting ears are symmetrically arranged on both sides of one of the clamping plate assemblies; a semicircular notch is provided on the edge of each clamping plate assembly, and a clamping part that matches the convex-concave of the retaining ring is provided on the circumferential surface of the notch; on the flat plate, the notch combination constitutes a circular hole that can be clamped on the outer circumferential surface of the core rod so that the clamping part and the convex-concave of the retaining ring match, and a positioning part that matches the shape of the other side of the arc-shaped notch relative to the positioning assembly is provided on the flat plate; when the arc-shaped notch abuts against the crankshaft connecting rod journal and the positioning part abuts against the positioning assembly, the circular hole and the crankshaft center hole are coaxial, and the two lifting ears extend out of the inner opening of the crank and are symmetrical relative to the axis of the crankshaft center hole.

2. A crankshaft red sleeve laying device according to claim 1, characterized in that: The two splint assemblies are a large splint assembly and a small splint assembly; a first notch is formed on one side of the large splint assembly and matches the shape of the other side of the arched notch of the positioning assembly, and a second notch is formed on the other side of the large splint assembly and matches the shape of the small splint assembly, a semicircular notch is provided in the middle of the second notch, and the two ears are formed on the large splint assembly.

3. The crankshaft red sleeve laying device according to claim 1, characterized in that: Two lifting ears are symmetrically arranged on the outer side of the other end of the core rod relative to the clamping ring.

4. A crankshaft red sleeve laying device according to any one of claims 1 to 3, characterized in that: The clamping ring is an annular groove.

5. A crankshaft red sleeve laying device according to any one of claims 1 to 3, characterized in that: The clamping ring is an annular protrusion.

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