Novel special tool for hoisting crankshaft gear ring

Abstract

The utility model 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 installed 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] The utility model relates to the technical field of gear ring hoisting tools, in particular to a new type of special tool for hoisting a crankshaft gear ring. Background Art

[0002] The production process of high-power medium-speed engines involves the installation of crankshaft gear rings. The gear ring is a gear ring with a mounting hole. The gear ring is installed on the crankshaft. The hollow part in the middle of the gear ring cooperates with the circumferential step 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 has a large mass and is difficult to adjust. Therefore, it needs to be moved with the help of lifting tools during assembly.

[0003] Common gear ring lifting tools usually use a sling. When in use, the sling is wrapped around the gear ring for one week before lifting. In order to avoid interference with the crankshaft during installation, the gear ring is not fixed axially in any position during lifting, which makes the lifting unsafe and unstable. In addition, the sling adjustment time is long during lifting, and the installation quality is low, which cannot meet the working requirements of the gear ring lifting tool. Therefore, a new crankshaft gear ring lifting special tool is proposed. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a new type of special tool for lifting the crankshaft gear ring to solve the technical problems that during lifting, the gear ring has no axial limit fixation, which leads to unsafe and stable lifting, long adjustment time of the lifting belt during lifting, and low installation quality.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of crankshaft gear ring lifting special tool, comprising:

[0008] A hanging plate, wherein a fixing plate is connected to the left side of the top of the hanging plate, 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 inside the top plate;

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

[0010] The lifting ring is screwed into the inside of the first screw hole, and the inside of the second screw hole is screwed into the limiting bolt.

[0011] Preferably, the connections between the hanging plate, the fixing plate, the top plate and the reinforcing rib plate are assembled by welding, thereby improving the overall strength of the tool.

[0012] Preferably, a ring frame is sleeved on the left end of the limiting bolt to facilitate the rotation of the limiting bolt. The ring frame is semicircular in shape, and an inner rod is inserted into the interior of the limiting bolt.

[0013] Preferably, a hinged rod is circumferentially connected to the right side of the inner rod, and hinged ears are movably mounted on the outer ends of the hinged rods through bearings, and supporting brackets are installed on the outer sides of the hinged ears.

[0014] Preferably, the number of the articulated rods and supporting brackets is 3-6 groups, and through grooves are provided inside the limit bolts at positions corresponding to the supporting brackets. The inner rod can be pressed down before the limit bolt is screwed on to close the supporting bracket, so that the limit bolt can be screwed on normally. When the gear ring is installed, the inner rod is loosened and reset under the action of the spring, so that the supporting bracket can be opened. The limit bolt is then reversed, so that the gear ring can be tightened by the supporting bracket, preventing the gear ring from shaking during hoisting. Since the supporting bracket is always in an open state without pressing the inner rod, the gear ring can be prevented from falling out, thereby improving the safety of hoisting.

[0015] Preferably, the right end of the inner rod is coaxially connected to a guide 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 rod and the corresponding positions of the inner cavity of the limit bolt, which facilitates the resetting of the inner rod.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a new type of crankshaft gear ring lifting special tool, which has the following beneficial effects:

[0018] The new crankshaft gear ring lifting special tool inserts a limiting bolt into the inside of the second screw hole, and then any one of the three threaded holes of the gear ring itself that are not used for installation is sleeved on the outside of the limiting bolt, so that the limiting bolt can pass through the hanging plate and the inside of the gear ring to be lifted, and the gear ring is lifted by the lifting ring. Since the limiting bolt can limit the internal axial position of the gear ring when it is lifted, it will not cause interference with the threaded hole in the middle of the gear ring during installation, thereby improving safety. At the same time, due to the first screw hole inside the top plate of the lifting tool, the lifting ring and the center line of the gear ring are offset by a certain distance, so that the gear ring lifting tool can be kept vertically stable and meet the angle requirements during installation. By strengthening the rib plate, the lifting safety is guaranteed, and the entire gear ring lifting special tool has a simple structure and is easy to operate. It is also convenient for one person to operate, thereby improving the convenience of using the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

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

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

[0022] Figure 4 This is a schematic diagram of the structure of the limit bolt of the utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the limit bolt of the utility model;

[0024] Figure 6 It is a schematic structural diagram of the right end of the inner insertion rod of the utility model.

[0025] In the figure: 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. hinged rod; 12. hinged ear; 13. supporting bracket; 14. guide rod; 15. spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides a technical solution, a new crankshaft gear ring lifting special tool, including a hanging 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 limit bolt 8, a ring frame 9, an inner rod 10, a hinge rod 11, a hinge ear 12, a supporting bracket 13, a guide rod 14 and a spring 15:

[0028] See also Figure 1 The top left side of the hanging plate 1 is connected to a fixing plate 2, and the upper right side of the fixing plate 2 is installed with a top plate 3, see Figure 2 A first screw hole 4 is provided on the left side of the interior of the top plate 3;

[0029] The second screw hole 5 is opened inside the hanging plate 1 and is located 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 joints of the hanging plate 1, the fixing plate 2, the top plate 3 and the reinforcing rib plate 6 are assembled by welding.

[0030] See also Figure 1 , the lifting ring 7 is screwed into the inside of the first screw hole 4, see Figure 3The second screw hole 5 is internally screwed with a limiting bolt 8. By inserting the limiting bolt 8 into the second screw hole 5, and then sleeved on the outside of the limiting bolt 8, the limiting bolt 8 can pass through the hanging plate 1 and the inside of the gear ring to be hoisted, and the gear ring is hoisted by the lifting ring 7. When the gear ring is hoisted, the limiting bolt 8 can limit the axial position of the inner axial direction, and will not cause interference with the threaded hole in the middle of the gear ring during installation, thereby improving safety. At the same time, due to the first screw hole 4 inside the top plate 3 of the lifting tool, the lifting ring 7 is offset from the center line of the gear ring by a certain distance, so that the gear ring lifting tool can be kept vertically stable and meet the angle requirements during installation. By reinforcing the rib plate 6, the lifting safety is ensured, so that the entire gear ring lifting special tool has a simple structure and is easy to operate. At the same time, it is convenient for one person to operate, thereby improving the convenience of tool use.

[0031] See also Figure 4 The left end of the limit bolt 8 is provided with a ring frame 9, the shape of the ring frame 9 is semicircular, and an inner rod 10 is inserted into the inner part of the limit bolt 8. Figure 5 and Figure 6 The right side of the inner rod 10 is circumferentially connected with a hinge rod 11, and the outer ends of the hinge rods 11 are movably mounted with hinge ears 12 through bearings, and the outer sides of the hinge ears 12 are equipped with support brackets 13. The number of hinge rods 11 and support brackets 13 is 3-6 groups, and the positions corresponding to the support brackets 13 in the inner part of the limit bolt 8 are provided with through grooves. The right end of the inner rod 10 is coaxially connected with a guide rod 14, and the outer part of the guide rod 14 is provided with a spring 15. The left and right ends of the spring 15 are respectively connected to the right end of the inner rod 10 and the corresponding positions of the inner cavity of the limit bolt 8 Before screwing on the limit bolt 8, the inner rod 10 can be pressed to close the supporting bracket 13, so that the limit bolt 8 can be screwed on normally. When the gear ring is installed, the inner rod 10 is loosened, and the inner rod 10 is driven to reset under the action of the spring 15, so that the supporting bracket 13 can be opened, and then the limit bolt 8 is reversed, so that the gear ring can be pressed by the supporting bracket 13, preventing the gear ring from shaking during hoisting. Since the supporting bracket 13 is always in an open state without pressing the inner rod 10, the gear ring can be prevented from falling out, thereby improving the safety of hoisting.

[0032] This solution inserts the limiting bolt 8 into the inside of the second screw hole 5, and then any one of the three threaded holes of the gear ring itself that are not used for installation is sleeved on the outside of the limiting bolt 8, so that the limiting bolt 8 can pass through the hanging plate 1 and the inside of the gear ring to be hoisted, and the gear ring is hoisted by the lifting ring 7. When the gear ring is hoisted, the limiting bolt 8 can limit the internal axial position of the gear ring without causing interference with the threaded hole in the middle of the gear ring during installation, thereby improving safety. At the same time, due to the first screw hole 4 inside the top plate 3 of the lifting tool, the lifting ring 7 is offset from the center line of the gear ring by a certain distance, so that the gear ring lifting tool can remain vertically stable and meet the angle requirements during installation. By reinforcing the rib plate 6, lifting safety is guaranteed. The gear ring lifting tool has a simple structure and is easy to operate. It is also convenient for one person to operate, which improves the convenience of using the tool. At the same time, the inner rod 10 can be pressed down before the limit bolt 8 is screwed on to close the supporting bracket 13, so that the limit bolt 8 can be screwed on normally. When the gear ring is installed, the inner rod 10 is loosened, and the inner rod 10 is driven to reset under the action of the spring 15, so that the supporting bracket 13 can be opened, and then the limit bolt 8 can be reversed, so that the gear ring can be tightened through the supporting bracket 13, which prevents the gear ring from shaking during lifting. Since the supporting bracket 13 is always in an open state when the inner rod 10 is not pressed, the gear ring is prevented from falling out, thereby improving the safety of lifting.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A new type of special tool for lifting crankshaft gear ring, characterized in that: include: A hanging plate (1), wherein a fixing plate (2) is connected to the top left side of the hanging plate (1), a top plate (3) is installed on the upper right side of the fixing plate (2), and a first screw hole (4) is opened on the left side inside the top plate (3); A second screw hole (5) is provided inside the hanging plate (1) and is located 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 lifting ring (7) is screwed into the interior of the first screw hole (4), and the interior of the second screw hole (5) is screwed into a limiting bolt (8).

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

3. A new type of crankshaft gear ring lifting special tool according to claim 1, characterized in that: The left end of the limiting bolt (8) is sleeved with a ring frame (9), the shape of the ring frame (9) is semicircular, and an inner rod (10) is inserted into the interior of the limiting bolt (8).

4. A new type of crankshaft gear ring lifting special tool according to claim 3, characterized in that: The right side of the inner rod (10) is circumferentially connected to a hinge rod (11), the outer ends of the hinge rods (11) are movably mounted with hinge ears (12) via bearings, and the outer sides of the hinge ears (12) are mounted with supporting brackets (13).

5. A new type of crankshaft gear ring lifting special tool according to claim 4, characterized in that: The number of the hinged rods (11) and the supporting brackets (13) is 3-6 groups, and through grooves are provided inside the limiting bolts (8) at positions corresponding to the supporting brackets (13).

6. A new type of crankshaft gear ring lifting special 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 positions of the inner cavity of the limit bolt (8).

Images