Novel special tool for hoisting crankshaft gear ring

Abstract

The invention relates to the technical field of gear ring hoisting tools, and discloses a novel special crankshaft gear ring hoisting tool which comprises a hoisting plate, a fixing plate is connected to the left side of the top of the hoisting plate, a top plate is mounted on the upper portion of the right side of the fixing plate, and a first screw hole is formed in the left side of the interior of the top plate; the second screw hole is formed in the middle of the vertical section in the lifting plate; and the lifting ring is screwed into the first screw hole, and a limiting bolt is screwed into the second screw hole. According to the novel special tool for hoisting the crankshaft gear ring, a limiting bolt is inserted into a second screw hole, any one of three threaded holes, which are not used for mounting, of the gear ring is arranged outside the limiting bolt in a sleeving manner, the gear ring is hoisted through a hoisting ring, and due to the fact that the limiting bolt can limit the axial direction of the interior of the gear ring when the gear ring is hoisted, the gear ring is prevented from being damaged. And interference of the threaded hole in the middle of the gear ring during installation is avoided, so that the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of gear ring lifting tools, specifically a novel special tool for lifting crankshaft gear rings. Background Technology

[0002] The installation of crankshaft gear rings is involved in the production process of medium-speed engines. The gear ring is a gear ring with mounting holes. The gear ring is installed on the crankshaft. The hollow part in the middle of the gear ring mates with the circumferential stepped surface of the crankshaft and is fixed by bolts and nuts. The gear ring is a key component of the diesel engine timing system. It is heavy and difficult to adjust, so it needs to be moved with the help of lifting tools during assembly.

[0003] Common crankshaft gear ring lifting tools typically use slings, which are wrapped around the gear ring before lifting. However, to avoid interference with the crankshaft during installation, the gear ring is not axially fixed during lifting, which leads to unsafe and unstable lifting, long adjustment time for the slings, and low installation quality. This does not meet the working requirements of crankshaft gear ring lifting tools. Therefore, a new type of crankshaft gear ring lifting tool is proposed. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a novel special tool for lifting crankshaft gear rings, which solves the technical problems of unsafe and unstable lifting, long adjustment time of lifting straps, and low installation quality caused by the lack of axial limiting and fixing of the gear ring during lifting.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a novel special tool for lifting crankshaft gear rings, comprising:

[0008] A hanging plate, wherein a fixing plate is connected to the top left side of the hanging plate, and a top plate is installed on the upper right side of the fixing plate, and a first screw hole is opened on the left side of the interior of the top plate;

[0009] The second screw hole is located inside the hanging plate in the middle of the vertical section. A reinforcing rib is welded between the right side of the fixing plate and the top plate.

[0010] The lifting eye is screwed into the inside of the first screw hole, and a limit bolt is screwed into the inside of the second screw hole.

[0011] Preferably, the connections of the hanging plate, fixing plate, top plate and reinforcing rib plate are all assembled by welding, which improves the overall strength of the tool.

[0012] Preferably, a ring frame is fitted on the left end of the limiting bolt to facilitate rotation of the limiting bolt. The ring frame is semi-circular in shape, and an inner rod is inserted inside the limiting bolt.

[0013] Preferably, a hinge rod is circumferentially connected to the right side of the inner rod, and the outer end of the hinge rod is movably mounted with a hinge lug via a bearing, and a support bracket is installed on the outer side of the hinge lug.

[0014] Preferably, the number of hinge rods and support brackets is 3-6 sets. The inner part of the limiting bolt is provided with a through groove corresponding to the position of the support bracket. The inner rod can be pressed down before screwing the limiting bolt to close the support bracket, so that the limiting bolt can be screwed on normally. After the gear ring is installed, the inner rod is released and driven to reset under the action of the spring, so that the support bracket can be opened. Then the limiting bolt is reversed so that the gear ring can be pressed through the support bracket, preventing the gear ring from shaking during hoisting. Since the support bracket is always in the open state when the inner rod is not pressed down, the gear ring is prevented from falling out, thus improving the safety of hoisting.

[0015] Preferably, a guide rod is coaxially connected to the right end of the inner insertion rod, and a spring is sleeved on the outside of the guide rod. The left and right ends of the spring are respectively connected to the right end of the inner insertion rod and the corresponding position of the inner cavity of the limiting bolt, which facilitates the resetting of the inner insertion rod.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a novel special tool for lifting crankshaft gear rings, which has the following beneficial effects:

[0018] This novel crankshaft gear ring lifting tool works by inserting a limiting bolt into the second threaded hole, and then fitting any one of the three non-installation threaded holes on the gear ring onto the outside of the limiting bolt. This allows the limiting bolt to pass through the lifting plate and the inside of the gear ring to be lifted. The gear ring is then lifted using a lifting ring. Because the limiting bolt limits the axial orientation of the gear ring during lifting, it prevents interference with the threaded hole in the middle of the gear ring during installation, thus improving safety. Furthermore, the first threaded hole inside the top plate of the lifting tool offsets the lifting ring from the centerline of the gear ring by a certain distance, ensuring the tool remains vertically stable and meets the angle requirements during installation. Reinforcing ribs further enhance lifting safety. The entire gear ring lifting tool has a simple structure, is easy to operate, and can be easily operated by a single person, improving its usability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2This is a schematic diagram of the hanging plate and top plate structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the left side structure of the hanging plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the limiting bolt structure of the present invention;

[0023] Figure 5 This is a schematic cross-sectional view of the limiting bolt structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the right end structure of the inner insertion rod of the present invention.

[0025] In the diagram: 1. Hanging plate; 2. Fixing plate; 3. Top plate; 4. First screw hole; 5. Second screw hole; 6. Reinforcing rib plate; 7. Lifting ring; 8. Limiting bolt; 9. Ring frame; 10. Inner rod; 11. Hinge rod; 12. Hinge lug; 13. Support bracket; 14. Guide rod; 15. Spring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides a technical solution: a novel crankshaft gear ring lifting tool, comprising a lifting plate 1, a fixing plate 2, a top plate 3, a first screw hole 4, a second screw hole 5, a reinforcing rib plate 6, a lifting ring 7, a limiting bolt 8, a ring frame 9, an inner insert rod 10, a hinge rod 11, a hinge lug 12, a support bracket 13, a guide rod 14, and a spring 15.

[0028] Please see Figure 1 A fixing plate 2 is connected to the top left side of the hanging plate 1, and a top plate 3 is installed on the upper right side of the fixing plate 2. Please refer to [link / reference]. Figure 2 The top plate 3 has a first screw hole 4 on its inner left side;

[0029] The second screw hole 5 is located inside the hanging plate 1 in the middle of the vertical section. A reinforcing rib plate 6 is welded between the right side of the fixing plate 2 and the top plate 3. The connection between the hanging plate 1, the fixing plate 2, the top plate 3 and the reinforcing rib plate 6 is assembled by welding.

[0030] Please see Figure 1 The lifting eyelet 7 is screwed into the inside of the first screw hole 4. Please refer to [link / reference]. Figure 3A limiting bolt 8 is screwed into the inside of the second screw hole 5. By inserting the limiting bolt 8 into the inside of the second screw hole 5, and then fitting any one of the three threaded holes of the gear ring itself that are not used for installation onto the outside of the limiting bolt 8, the limiting bolt 8 can pass through the lifting plate 1 and the inside of the gear ring to be lifted. The gear ring is then lifted by the lifting ring 7. Since the limiting bolt 8 can limit the axial orientation of the gear ring when it is lifted, it will not cause interference to the threaded hole in the middle of the gear ring during installation, thus improving safety. At the same time, the first screw hole 4 inside the top plate 3 of the lifting tool causes the lifting ring 7 to be offset from the center line of the gear ring by a certain distance, which can keep the gear ring lifting tool vertical and stable and meet the angle requirements during installation. The reinforcing rib 6 ensures the safety of lifting. The entire gear ring lifting tool has a simple structure and is easy to operate. It is also easy for a single person to operate, thus improving the convenience of tool use.

[0031] Please see Figure 4 The left end of the limiting bolt 8 is fitted with a ring frame 9, which is semi-circular in shape. An inner rod 10 is inserted inside the limiting bolt 8. Please refer to [link / reference]. Figure 5 and Figure 6 A hinge rod 11 is circumferentially connected to the right side of the inner insertion rod 10. The outer ends of the hinge rods 11 are movably mounted with hinge ears 12 via bearings. Support brackets 13 are installed on the outer sides of the hinge ears 12. There are 3-6 sets of hinge rods 11 and support brackets 13. Through slots are opened inside the limiting bolts 8 at positions corresponding to the support brackets 13. A guide rod 14 is coaxially connected to the right end of the inner insertion rod 10. A spring 15 is sleeved on the outside of the guide rod 14. The left and right ends of the spring 15 are respectively connected to the right end of the inner insertion rod 10 and the corresponding positions inside the cavity of the limiting bolts 8. Before screwing in the limiting bolt 8, the inner insert rod 10 can be pressed to close the support bracket 13, allowing the limiting bolt 8 to be screwed in normally. After the gear ring is installed, the inner insert rod 10 is released, and the inner insert rod 10 is reset under the action of the spring 15, which allows the support bracket 13 to open. Then, the limiting bolt 8 is reversed, so that the gear ring can be pressed tightly through the support bracket 13, preventing the gear ring from shaking during hoisting. Since the support bracket 13 is always in the open state when the inner insert rod 10 is not pressed, the gear ring is prevented from coming off, improving the safety of hoisting.

[0032] This solution involves inserting the limiting bolt 8 into the second threaded hole 5, and then fitting any one of the three non-installation threaded holes of the gear ring onto the outside of the limiting bolt 8. This allows the limiting bolt 8 to penetrate the lifting plate 1 and the gear ring to be lifted. The gear ring is then lifted using the lifting ring 7. Because the limiting bolt 8 limits the axial orientation of the gear ring during lifting, and prevents interference with the threaded hole in the middle of the gear ring during installation, safety is improved. Simultaneously, the first threaded hole 4 inside the top plate 3 of the lifting tool offsets the lifting ring 7 from the centerline of the gear ring by a certain distance, ensuring the gear ring lifting tool remains vertically stable and meets the angle requirements during installation. The reinforcing rib 6 further ensures lifting safety. The design of this special tool for lifting gear rings is simple and easy to operate, allowing for single-person operation and improving ease of use. Before screwing in the limiting bolt 8, pressing the inner rod 10 closes the support bracket 13, enabling the limiting bolt 8 to be screwed in normally. After the gear ring is installed, releasing the inner rod 10, under the action of the spring 15, causes the inner rod 10 to reset, opening the support bracket 13. Reversing the limiting bolt 8 allows the support bracket 13 to press the gear ring firmly, preventing it from shaking during lifting. Since the support bracket 13 remains open when the inner rod 10 is not pressed, it prevents the gear ring from detaching, improving lifting safety.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel special tool for lifting crankshaft gear rings, characterized in that, include: A hanging plate (1) is connected to a fixing plate (2) on the top left side of the hanging plate (1), and a top plate (3) is installed on the upper right side of the fixing plate (2). A first screw hole (4) is opened on the left side inside the top plate (3). The second screw hole (5) is located in the middle of the vertical section inside the hanging plate (1), and a reinforcing rib plate (6) is welded between the right side of the fixing plate (2) and the top plate (3). The lifting ring (7) is screwed into the inside of the first screw hole (4), and the limit bolt (8) is screwed into the inside of the second screw hole (5).

2. The novel crankshaft gear ring lifting tool according to claim 1, characterized in that: The connections of the hanging plate (1), fixing plate (2), top plate (3) and reinforcing rib plate (6) are all assembled by welding.

3. The novel crankshaft gear ring lifting tool according to claim 1, characterized in that: The left end of the limiting bolt (8) is fitted with a ring frame (9), which is semi-circular in shape, and an inner rod (10) is inserted inside the limiting bolt (8).

4. The novel crankshaft gear ring lifting tool according to claim 3, characterized in that: The right side of the inner rod (10) is circumferentially connected to a hinge rod (11), and the outer end of the hinge rod (11) is movably mounted with a hinge ear (12) through a bearing. The outer side of the hinge ear (12) is equipped with a support bracket (13).

5. A novel crankshaft gear ring lifting tool according to claim 4, characterized in that: The number of the hinge rod (11) and the support bracket (13) is 3-6 sets, and the inside of the limiting bolt (8) is provided with through grooves at the positions corresponding to the support bracket (13).

6. A novel crankshaft gear ring lifting tool according to claim 5, characterized in that: The right end of the inner rod (10) is coaxially connected to a guide rod (14), and a spring (15) is sleeved on the outside of the guide rod (14). The left and right ends of the spring (15) are respectively connected to the right end of the inner rod (10) and the corresponding position of the inner cavity of the limiting bolt (8).

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