Assembling and disassembling tool for applying precise torque to side mounting disc

Abstract

The utility model relates to a mounting and dismounting tool for applying accurate torque to a side mounting disc, which comprises a torque applying tool and a shafting fixing tool, and the torque applying tool comprises a spline structure additionally arranged on the mounting disc and connected with an electric wrench and the mounting disc through a spline sleeve and the shafting fixing tool. A pawl structure is arranged on an inner ring of the shafting fixing tool, the shafting fixing tool is matched and meshed with turning teeth on a rotating shaft through the pawl structure, and the bottom of the shafting fixing tool is fixedly connected to a base. According to the assembling and disassembling tool for applying the accurate torque to the side face installing disc, the installing disc is fastened and disassembled through the connecting tool and the electric wrench, torque control can be accurately achieved, a torque design value is strictly implemented, constant-speed assembling and disassembling can be achieved, and thread damage caused by instantaneous impact and non-uniform speed is avoided.

Description

Technical Field

[0001] The utility model relates to the installation of a steam turbine, in particular to a precision torque installation and disassembly tool for an installation disk. Background Art

[0002] The side installation disk of a steam turbine with a conventional structure (see Figure 1 ) is often connected to a rotating shaft through reverse threads. During the installation process, the torque applied is judged by the on-site operator based on feeling. Due to the lack of a special tool, the disassembly process is time-consuming and laborious, and improper operation may also cause damage to the mating thread section. Therefore, this structure is restricted in actual use and is difficult to meet the requirements of certain units with certain needs for torque application and installation and disassembly. Summary of the Invention

[0003] The utility model provides a precision torque installation and disassembly tool for a side installation disk. Through a connection tooling, an electric wrench is used to fasten and disassemble the installation disk. It can not only accurately control the torque and strictly implement the torque design value, but also achieve uniform installation and disassembly, avoiding thread damage caused by instantaneous impact and uneven speed.

[0004] To achieve the above object, the technical solution of the utility model is: a precision torque installation and disassembly tool for a side installation disk, including a torque application tooling and a shafting fixing tooling, wherein: the torque application tooling includes adding a spline structure on the installation disk and connecting the electric wrench and the installation disk through a spline sleeve; the shafting fixing tooling includes arranging a pawl structure on the inner ring of the shafting fixing tooling and matching and engaging with the turning gear on the rotating shaft through the pawl structure, and is fixedly connected to the base at the bottom.

[0005] Further, one side of the installation disk is connected to the rotating shaft through threads, and the other side is connected to the spline sleeve and the electric wrench through a spline structure.

[0006] Further, the electric wrench is the power source in the whole structure, and its torque meets the torque design requirement value and has a certain margin.

[0007] Further, the electric wrench is fixedly connected to the unit housing through a fixed force arm.

[0008] Further, the outer circle side of the fixed force arm is inserted into the unit housing through a protruding small cylinder, and the inner side hole is connected to the electric wrench.

[0009] Further, the spline sleeve is a spline sleeve with an adjustable interface form. By adjusting the interface form between the spline sleeve and the installation disk side, the electric wrench can be reused for different units.

[0010] The beneficial effects of the utility model are:

[0011] The disassembly and assembly tool for applying precise torque to the side-mounted disc of the present utility model can largely eliminate the drawbacks of the original structure, such as the uncontrollable true value of the applied torque, poor on-site operability, and the hidden danger of thread section damage, enabling the side-mounted disc structure to better meet the torque design requirements and have the feasibility of repeated disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of a conventional side-mounted disc structure;

[0013] Figure 2 is a schematic diagram of the mounting disc in the disassembly and assembly tool for applying precise torque to the side-mounted disc of the present utility model;

[0014] Figure 3 is Figure 2 the view from direction A of

[0015] Figure 4 is a schematic diagram of the torque application part in the disassembly and assembly tool for applying precise torque to the side-mounted disc of the present utility model;

[0016] Figure 5 is a schematic diagram of the shafting fixing tooling in the disassembly and assembly tool for applying precise torque to the side-mounted disc of the present utility model;

[0017] In the figure: 1. mounting disc, 2. electric wrench, 3. spline sleeve, 4. fixed force arm, 5. shafting fixing tooling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] As Figures 2 to 5 shown, a disassembly and assembly tool for applying precise torque to the side-mounted disc of the present utility model includes five parts: a mounting disc 1, an electric wrench 2, a spline sleeve 3, a fixed force arm 4, and a shafting fixing tooling 5. The right side of the mounting disc 1 is connected to the rotating shaft through a thread, and a spline structure is provided on the left side, and is connected to the electric wrench 2 of the torque application part through the spline structure to apply an external electric torque to the mounting disc 1. The inner ring of the shafting fixing tooling 5 is a ratchet structure, which is matched and engaged with the turning gear on the rotating shaft, and the bottom is fixed to the base through bolts, thereby realizing the fixation of the rotating shaft and ensuring that the rotor does not rotate with the application of torque.

[0020] The electric wrench 2 is the power source in the whole structure, and its function needs to be selected by referring to the torque design requirement value and considering a certain margin. Since the electric wrench 2 has a certain weight and there is a reaction torque during the working process, in order to ensure the operation comfort during the torque application process, a fixed force arm 4 is designed. The outer circle side of the fixed force arm 4 is inserted into the unit housing through a protruding small cylinder, and the inner hole is connected to the electric wrench 2, transferring the weight of the electric wrench 2 and the reaction torque to the unit housing, which is convenient for the on-site operator to use.

[0021] The electric wrench 2 and the mounting plate 1 are connected through a spline sleeve 3. By designing different spline sleeves 3 and adjusting the interface on the side of the spline sleeve 3 with the mounting plate 1, the electric wrench 2 can be reused for different units, improving the adaptability of the tooling.

[0022] The precision torque installation and disassembly tool for the side mounting plate of the utility model uses an electric wrench to tighten and disassemble the mounting plate through a connecting tooling. It can not only accurately achieve torque control and strictly implement the torque design value, but also achieve uniform installation and disassembly, avoiding thread damage caused by instantaneous impact and uneven speed.

Claims

1. A tool for applying precise torque to a side mounting plate, characterized in that: It includes a torque applying tool and a shaft fixing tool, wherein: the torque applying tool includes adding a spline structure on the mounting plate, and connecting the electric wrench and the mounting plate through a spline sleeve; the shaft fixing tool includes setting a pawl structure on the inner ring of the shaft fixing tool, and matching and meshing with the teeth on the upper plate of the rotating shaft through the pawl structure, and the bottom is fixedly connected to the base.

2. The assembly and disassembly tool for applying precise torque to the side mounting plate according to claim 1, characterized in that: One side of the mounting plate is connected to the rotating shaft through a thread, and the other side is connected to the spline sleeve and the electric wrench through a spline structure.

3. The assembly and disassembly tool for applying precise torque to the side mounting plate according to claim 1, characterized in that: The electric wrench is the power source of the entire structure, and its torque meets the torque design requirement value and increases a certain margin.

4. The assembly and disassembly tool for applying precise torque to a side mounting plate according to claim 1, characterized in that: The electric wrench is fixedly connected to the casing of the unit through a fixed force arm.

5. The assembly and disassembly tool for applying precise torque to the side mounting plate according to claim 4, characterized in that: The outer circle side of the fixed force arm is inserted into the unit casing through a protruding small cylinder, and the inner hole is connected with the electric wrench.

6. The assembly and disassembly tool for applying precise torque to a side mounting plate according to claim 1, characterized in that: The spline sleeve is a spline sleeve with an adjustable interface. By adjusting the interface between the spline sleeve and the mounting plate side, the electric wrench can be repeatedly used in different units.

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