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

Abstract

The invention relates to a mounting and dismounting tool for applying precise torque to a side mounting disc, which comprises a torque applying tool and a shafting fixing tool, and is characterized in that the torque applying tool comprises a spline structure additionally arranged on the mounting disc, an electric wrench and the mounting disc connected 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 mounting and dismounting tool for applying the precise torque to the side mounting disc, the mounting disc is fastened and dismounted through the connecting tool and the electric wrench, torque control can be precisely achieved, the torque design value is strictly implemented, uniform-speed mounting and dismounting can be achieved, and thread damage caused by instantaneous impact and non-uniform speed is avoided.

Description

Technical Field

[0001] The invention relates to the installation of a steam turbine, in particular to an installation disc applying precise torque assembly and disassembly tool. Background Art

[0002] Conventional steam turbine side mounting plate (see Figure 1 ) is often connected to the shaft through reverse threads. The torque applied during installation is determined by the operator's feeling. Due to the lack of special tools, the disassembly process is time-consuming and laborious. Improper operation may also cause damage to the mating thread section. Therefore, this structure is limited in actual use and is difficult to meet the needs of certain units that have certain requirements for torque application and assembly and disassembly. Summary of the invention

[0003] The present invention proposes a tool for applying precise torque to a side mounting plate. By connecting the tooling and using an electric wrench to tighten and disassemble the mounting plate, not only can the torque control be accurately achieved and the torque design value be strictly implemented, but also uniform speed assembly and disassembly can be achieved to avoid instantaneous impact and speed unevenness causing thread damage.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a tool for applying precise torque to a side mounting plate, including a torque applying tool and a shaft fixing tool, wherein: the torque applying tool includes adding a spline structure to the mounting plate, and connecting the electric wrench and the mounting plate through a spline sleeve, and 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.

[0005] Furthermore, 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.

[0006] Furthermore, the electric wrench is the power source in the entire structure, and its torque meets the torque design requirement value and increases a certain margin.

[0007] Furthermore, the electric wrench is fixedly connected to the unit casing via a fixed force arm.

[0008] Furthermore, 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 to the electric wrench.

[0009] Furthermore, 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.

[0010] The beneficial effects of the present invention are:

[0011] The use of the assembly and disassembly tool for applying precise torque to the side mounting plate of the present invention can largely eliminate the disadvantages of the original structure that the actual value of the torque applied is uncontrollable, the on-site operability is poor, and there is a risk of damage to the threaded section, so that the side mounting plate structure can meet the torque design requirements as much as possible and have the feasibility of repeated disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 2 It is a schematic diagram of a mounting plate in a mounting and disassembly tool for applying precise torque to a side mounting plate of the present invention;

[0014] Figure 3 yes Figure 2 A-direction view;

[0015] Figure 4 It is a schematic diagram of the torque applying part of the assembly and disassembly tool for applying precise torque to the side mounting plate of the present invention;

[0016] Figure 5 It is a schematic diagram of the shaft system fixing tool for applying precise torque to the side mounting plate of the present invention;

[0017] In the figure: 1. Mounting plate, 2. Electric wrench, 3. Spline sleeve, 4. Fixed lever arm, 5. Shaft fixing tool. DETAILED DESCRIPTION

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

[0019] like Figures 2 to 5 As shown, a tool for applying precise torque to a side mounting plate of the present invention comprises five parts: a mounting plate 1, an electric wrench 2, a spline sleeve 3, a fixed force arm 4, and a shaft fixing tool 5. The right side of the mounting plate 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 applying part through the spline structure, so as to apply external electric torque to the mounting plate 1. The inner ring of the shaft fixing tool 5 is a ratchet structure, which is matched and meshed with the gears on the upper plate of the rotating shaft, and the bottom is fixed to the base by bolts, thereby fixing the rotating shaft and ensuring that the rotor does not rotate during the torque application process.

[0020] The electric wrench 2 is the power source of the entire structure, and its function needs to be matched and selected with reference to the torque design requirement value and considering a certain margin. Since the electric wrench 2 has a certain weight and there is a counter-torque effect during the working process, in order to ensure the operating comfort during the torque application process, a fixed lever arm 4 is designed. The outer circle side of the fixed lever arm 4 is inserted into the unit casing through a protruding small cylinder, and the inner hole is connected to the electric wrench 2, so that the weight and counter-torque effect of the electric wrench 2 are transferred to the unit casing, which is convenient for the on-site operator to use.

[0021] The electric wrench 2 and the mounting plate 1 are connected via a spline sleeve 3. By designing different spline sleeves 3 and adjusting the interface between the spline sleeve 3 and the mounting plate 1, the electric wrench 2 can be repeatedly used in different units, thereby improving the adaptability of the tooling.

[0022] The assembly and disassembly tool for applying precise torque to the side mounting plate of the present invention can fasten and disassemble the mounting plate by connecting tooling with an electric wrench, which can not only accurately realize torque control and strictly implement the torque design value, but also realize uniform speed assembly and disassembly, avoiding instantaneous impact and speed unevenness to cause thread damage.

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 a 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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