Disassembling and assembling tool for large nut

Abstract

The utility model relates to an assembling and disassembling tool for a large nut, which comprises a bracket connected with a hoisting crane; one end of the supporting rod is fixedly connected with the bracket; the inner ring of the rotating bearing I is sleeved on the supporting rod; the inner ring of the second rotary bearing is sleeved on the supporting rod, and the outer ring of the first rotary bearing and the outer ring of the second rotary bearing are sleeved with round nuts. According to the disassembling and assembling tool for the large nut, a structure which is formed by the support and the supporting rod and is similar to a U-shaped hanging ring is used for being connected with a hoisting crane; the positions of the first rotating bearing and the second rotating bearing are adjusted through an internal hexagonal wrench, so that the round nut is located at the horizontal position during hoisting; when a traveling crane is used for adjusting the nut to a proper position for installation, workers do not need to bear the weight of the nut at all, which is particularly important for installation of heavy nuts, and the labor intensity of the workers is greatly relieved; and the device has the advantages of high reliability and strong operability, so that the nut can be smoothly screwed in.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly tools, in particular to a disassembly and assembly tool for large nuts. Background Art

[0002] In the maintenance of large equipment such as die-casting machines and injection molding machines, bolts with larger diameters and weights are often used as fasteners. It is necessary to install and separate a large rod and a round nut. The weight range of this round nut is about 50 - 150 KG, and the maximum diameter is about 350 MM. And this round nut is horizontally disassembled and assembled. In the past, hoisting tools were directly used for disassembly and assembly.

[0003] However, in the operation process of this construction method, the round nut is not easy to rotate and install, and there is a risk of tipping over. And when disassembling and assembling the round nut, due to the large volume and heavy weight of the round nut body, it is particularly laborious for workers to install, which brings inconvenience to the construction, and there are great potential safety hazards. Therefore, it is necessary to design an auxiliary disassembly and assembly tool to avoid the occurrence of these problems. Summary of the Utility Model

[0004] For this reason, the technical problem to be solved by the utility model is to overcome the problems in the prior art that during the assembly or maintenance of large mechanical equipment, it is necessary to disassemble and assemble the large round nut on the rod head. Due to the heavy and large round nut, it is inconvenient to operate, and there are certain potential safety hazards during the disassembly and assembly process.

[0005] To solve the above technical problems, the utility model provides a disassembly and assembly tool for large nuts, including: a bracket, which is connected with a hoisting crane; a support rod, one end of which is fixedly connected with the bracket; a first rotating bearing, the inner ring of which is sleeved on the support rod; a second rotating bearing, the inner ring of which is sleeved on the support rod, and the round nut is sleeved on the outer rings of the first rotating bearing and the second rotating bearing. The disassembly and assembly tool for large nuts of the utility model has a simple structure and is convenient to use. It can quickly disassemble and install large nuts, has high working efficiency, and good safety; using this tool to disassemble and assemble the round nut is convenient, there is no risk of tipping over, and it is safe and efficient.

[0006] In an embodiment of the utility model, the support rod is a cylindrical rod.

[0007] In an embodiment of the utility model, a first limiting ring and a second limiting ring are sleeved on the support rod. The first limiting ring and the second limiting ring are respectively located on both sides of the axis of the first rotating bearing, and the first limiting ring and the second limiting ring are used to limit the position of the first rotating bearing on the support rod.

[0008] In an embodiment of the present utility model, a limit ring three and a limit ring four are sleeved on the support rod. The limit ring three and the limit ring four are respectively located on both sides of the axis of the rotary bearing two, and the limit ring three and the limit ring four are used to limit the position of the rotary bearing two on the support rod.

[0009] In an embodiment of the present utility model, a plurality of locking screws are provided on the limit ring one, the limit ring two, the limit ring three and the limit ring four. The locking screws are used to lock the limit ring one, the limit ring two, the limit ring three and the limit ring four on the support rod.

[0010] In an embodiment of the present utility model, the bracket is a right-angled steel plate. One end of the bracket is provided with a hoisting hole, and the other end of the bracket is connected to one end of the support rod.

[0011] In an embodiment of the present utility model, the support rod extends toward the side of the hoisting hole.

[0012] In an embodiment of the present utility model, a chamfer is provided at the right-angled corner of the bracket.

[0013] In an embodiment of the present utility model, the end of the bracket provided with the hoisting hole is provided with a rounded corner.

[0014] In an embodiment of the present utility model, when the hoisting nut of the bracket is installed, the axis of the nut is arranged in the horizontal direction.

[0015] The above technical solution of the present utility model has the following beneficial effects compared with the prior art:

[0016] The disassembly and assembly tool for large nuts of the present utility model uses a structure similar to a U-shaped lifting ring composed of a bracket and a support rod to connect with a hoisting crane; the positions of the rotary bearing one and the rotary bearing two are adjusted by an inner hexagon wrench so that the round nut is in a horizontal position during hoisting; when using the crane to adjust the nut to a suitable position for installation, the staff does not need to bear the weight of the nut at all during the installation of the nut, which is particularly important for the installation of heavy nuts and greatly reduces the labor intensity of the staff; and it has the advantages of high reliability and strong operability, thus ensuring the smooth screwing of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in conjunction with the accompanying drawings, where

[0018] Figure 1 is a schematic structural diagram of the disassembly and assembly tool for large nuts in the preferred embodiment of the present utility model;

[0019] Figure 2The front view of the disassembly and assembly tool for large nuts in the preferred embodiment of the present utility model;

[0020] Figure 3 The left view of the disassembly and assembly tool for large nuts in the preferred embodiment of the present utility model.

[0021] Explanation of the reference numerals in the drawings of the specification: Bracket 1, lifting hole 11, chamfer 12, support rod 2, rotary bearing 1 3, rotary bearing 2 4, limit ring 1 5, limit ring 2 6, limit ring 3 7, limit ring 4 8, locking screw 9. Detailed implementation manners

[0022] The present utility model will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited are not intended to limit the present utility model.

[0023] Refer to Figure 1 As shown, the disassembly and assembly tool for large nuts of the present utility model includes several parts: a bracket 1, a support rod 2, a rotary bearing 1 3, and a rotary bearing 2 4; the bracket 1 is connected to a hoisting crane; the support rod 2, one end of which is fixedly connected to the bracket 1; the rotary bearing 1 3, the inner ring of which is sleeved on the support rod 2; the rotary bearing 2 4, the inner ring of which is sleeved on the support rod 2, and a round nut is sleeved on the outer rings of the rotary bearing 1 3 and the rotary bearing 2 4.

[0024] The round nut is sleeved on the rotary bearing 1 3 and the rotary bearing 2 4, the bracket 1 is hoisted by the crane, and the round nut is butted against the large rod. In this way, by simply rotating the round nut by a person, the round nut can be rotated onto the large rod to complete the installation.

[0025] Among them, the support rod 2 is a cylindrical rod. The bracket 1 is a right-angled steel plate, one end of the bracket 1 is provided with a lifting hole 11, and the other end of the bracket 1 is connected to one end of the support rod 2. The support rod 2 extends toward the side of the lifting hole 11. That is, the support rod 2 and one right-angled side of the bracket 1 are in a state of being almost parallel. At this time, the support rod 2 and the bracket as a whole form an approximately U-shaped structure. Before use, the rotary bearing 1 3 and the rotary bearing 2 4 are adjusted to a suitable position on the support rod 2, and then the round nut is sleeved on. The adjusted positions of the rotary bearing 1 3 and the rotary bearing 2 4 should be such that when the bracket 1 hoists and installs the nut, the axis of the nut is set horizontally. In this way, when installing the round nut, the state of the round nut is just in an approximately horizontal state with the large rod to be installed, which is convenient for aligning the round nut with the large rod.

[0026] The installation structure of the first rotary bearing 3 and the second rotary bearing 4 on the support rod 2 is as follows: A first limiting ring 5 and a second limiting ring 6 are sleeved on the support rod 2. The first limiting ring 5 and the second limiting ring 6 are respectively located on both sides of the axis of the first rotary bearing 3, and the first limiting ring 5 and the second limiting ring 6 are used to limit the position of the first rotary bearing 3 on the support rod 2. A third limiting ring 7 and a fourth limiting ring 8 are sleeved on the support rod 2. The third limiting ring 7 and the fourth limiting ring 8 are respectively located on both sides of the axis of the second rotary bearing 4, and the third limiting ring 7 and the fourth limiting ring 8 are used to limit the position of the second rotary bearing 4 on the support rod 2. A number of locking screws 9 are provided on the first limiting ring 5, the second limiting ring 6, the third limiting ring 7 and the fourth limiting ring 8, and the locking screws 9 are used to lock the first limiting ring 5, the second limiting ring 6, the third limiting ring 7 and the fourth limiting ring 8 on the support rod 2. The first rotary bearing 3 and the second rotary bearing 4 adopt bearings of the same specification. The structural dimensions of the first limiting ring 5, the second limiting ring 6, the third limiting ring 7 and the fourth limiting ring 8 are the same, and the outer diameters of the first limiting ring 5, the second limiting ring 6, the third limiting ring 7 and the fourth limiting ring 8 are smaller than the outer ring diameters of the first rotary bearing 3 and the second rotary bearing 4. In this way, the parts of the outer rings of the first rotary bearing 3 and the second rotary bearing 4 that are higher than the outer diameters of the first limiting ring 5, the second limiting ring 6, the third limiting ring 7 and the fourth limiting ring 8 form steps. Since the internal thread holes are provided in the round nuts, after the round nuts are sleeved on the support rod 2, the grooves between the threads of the round nuts just catch the step positions, so that the round nuts can be prevented from falling off the support rod when hoisting the round nuts.

[0027] In addition, a chamfer 12 is provided at the right-angled corner of the bracket 1, and the right-angled corner inside the bracket 1 is set as a rounded corner. The chamfer 12 provided avoids the formation of sharp corners on the bracket 1, which is likely to cause personal injury during operation. The end of the bracket 1 where the lifting hole 11 is provided is set as a rounded corner. The rounded corner is also provided to increase the safety of the tool.

[0028] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the creative utility model.

Claims

1. A disassembling and assembling tool for large nuts, characterized in that: Including, a bracket which is connected to a hoisting crane; a support rod, one end of which is fixedly connected to the bracket; a first rotary bearing, the inner ring of which is sleeved on the support rod; a second rotary bearing, the inner ring of which is sleeved on the support rod, and a round nut is sleeved on the outer rings of the first rotary bearing and the second rotary bearing.

2. The disassembling and assembling tool for large nuts according to claim 1, wherein: The support rod is a cylindrical rod.

3. The disassembling and assembling tool for large nuts according to claim 2, wherein: A first limit ring and a second limit ring are sleeved on the support rod. The first limit ring and the second limit ring are respectively located on both sides of the axis of the first rotary bearing, and the first limit ring and the second limit ring are used to limit the position of the first rotary bearing on the support rod.

4. The disassembling and assembling tool for large nuts according to claim 3, characterized in that: A third limit ring and a fourth limit ring are sleeved on the support rod. The third limit ring and the fourth limit ring are respectively located on both sides of the axis of the second rotary bearing, and the third limit ring and the fourth limit ring are used to limit the position of the second rotary bearing on the support rod.

5. The disassembling and assembling tool for large nuts according to claim 4, characterized in that: A number of locking screws are provided on the first limit ring, the second limit ring, the third limit ring and the fourth limit ring, and the locking screws are used to lock the first limit ring, the second limit ring, the third limit ring and the fourth limit ring on the support rod.

6. The disassembling and assembling tool for large nuts according to claim 1, characterized in that: The bracket is a right-angled steel plate. A hoisting hole is provided at one end of the bracket, and the other end of the bracket is connected to one end of the support rod.

7. The disassembling and assembling tool for large nuts according to claim 6, wherein: The support rod extends towards the side of the hoisting hole.

8. The disassembling and assembling tool for large nuts according to claim 6, characterized in that: A chamfer is provided at the right-angled corner of the bracket.

9. The disassembling and assembling tool for large nuts according to claim 6, characterized in that: The end of the bracket provided with the hoisting hole is set to be rounded.

10. The disassembling and assembling tool for large nuts according to claim 1, characterized in that: When the hoisting nut of the bracket is installed, the axis of the nut is arranged horizontally.

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