Multi-pole rod support device with single cylindrical surface positioning function, multi-pole rod device and multi-pole rod mounting method

A support device and a cylindrical surface technology, which is applied in the field of multi-pole support devices, can solve the problems of extremely high shape and position error requirements, difficulty in ensuring stability, and high processing difficulty, so as to reduce processing difficulty and avoid technical difficulty and uncertainty The effect that the installation method is simple

Inactive Publication Date: 2020-04-21
CHENGDU ALIEBN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this prior art, the multipole rod support has a relatively complex structure, which requires extremely high shape and position errors and is difficult to process. In addition, there are some special-shaped fixed structures, such as the inner contour positioning surface is rectangular, etc. Although the difficulty of installation is low, the difficulty of processing is even greater; there are also some semi-fixed solutions that are manually adjusted after installation. Although the processing difficulty is not great, the assembly is very difficult, and it is difficult to ensure the stability of long-term installation and use

Method used

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  • Multi-pole rod support device with single cylindrical surface positioning function, multi-pole rod device and multi-pole rod mounting method
  • Multi-pole rod support device with single cylindrical surface positioning function, multi-pole rod device and multi-pole rod mounting method
  • Multi-pole rod support device with single cylindrical surface positioning function, multi-pole rod device and multi-pole rod mounting method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] As shown in the accompanying drawings, a single-cylindrical positioning multi-pole support device includes two identical supports, the supports are ring-shaped, the inner wall is a single cylindrical surface, and the outer wall is a cylindrical surface that shares the central axis with the inner wall , the cylindrical surface obtained by cutting 4 times on average around the circumference in a direction parallel to the central axis; the distance between the cutting surface (11) of the outer wall (4) and the central axis is less than r and greater than rcos(π / n), where r is the outer wall ( 4) The distance from the central axis, n is the number of multipole rods; each cutting surface of the outer wall (4) is provided with stepped screw holes. Due to the cutting, the cutting surface is a plane, while the uncut part is still a cylindrical surface. The step screw holes are located on the cutting surface, and are evenly distributed along a circle whose center is the central ...

Embodiment 2

[0041] as attached Figure 5 As shown, this embodiment relates to a multi-stage rod device using the single-cylindrical multi-stage rod support device described in Embodiment 1. On the basis of the technical solution of Example 1, this embodiment also includes a plurality of round rods (9) with the same number as the stepped screw holes (3), and the upper and lower parts of the round rods (9) are installed There is a rod hole (10) corresponding to the step screw, and the two ends of the round rod are respectively fixed on the two brackets (1) by screwing the step screw (8) into the rod hole (10). The round rods (9) are parallel and flush with each other, are tangent to the cylindrical surface of the inner wall of the bracket (2), are uniformly distributed around the central axis of the bracket (1), and maintain a specific distance from the central axis of the bracket (1).

Embodiment 3

[0043] This embodiment relates to a multi-pole installation method using a single-cylindrical positioning multi-pole support device in Embodiment 1, including the following steps:

[0044] (1) Pass the rod body of the multipole rod through the two brackets, pass the step screw through the corresponding step screw hole on the rod body, and tighten the step screw until the rod body is closely tangent to the bracket and positioned with the inner wall cylinder of the bracket The surface is tangent, the surface of the rod body has a distance from the center of the bracket and does not touch;

[0045] (2) Repeat step (1) to install other rod bodies of the multipole rod to complete the installation.

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Abstract

The invention provides a multi-pole rod support device with a single cylindrical surface positioning function, a multi-pole rod device comprising the multi-pole rod support device and a multi-pole rodmounting method adopting the multi-pole rod support device. According to the multi-pole rod support device, aiming to overcome the defects in the prior art, the inner wall surface, namely a positioning surface, of a support is set as the single cylindrical surface, and step screw hole positions are uniformly arranged on the outer wall surface in a circumferential mode; and by the aid of technicalmeans that a multi-pole rod is fixed by the step screws and the like, the multi-pole rod support device has the technical effects of being small in machining difficulty, stable in assembly and easy in machining precision control, and the multi-pole rod mounting method adopting the multi-pole rod support device is simple and stable in assembly and has great significance for improving the use stability of mass spectrometers.

Description

technical field [0001] The present invention relates to a multi-pole support device, a multi-stage rod device and a multi-pole installation method using the support device, in particular to a single-cylindrical positioning multi-pole support device, multi-stage rod device and The multi-pole installation method of the support device is adopted. Background technique [0002] Quadrupoles and the hexapoles, octopoles, etc. developed from them are collectively referred to as multi-stage rods. The multipole is the core component of the ion transmission system and mass analyzer of the mass spectrometer. [0003] The common multi-pole device in the prior art is composed of metal fixing screws, two multi-pole brackets made of hard insulating material and multiple metal round rods, wherein there are multiple round rods in the multi-pole bracket. Consistent arcuate surfaces for precise positioning of multipole rods. In this prior art, the multipole rod support has a relatively compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B7/18F16B23/00H01J49/42
CPCF16B7/185F16B23/0015F16B23/0023F16B23/0038H01J49/4225
Inventor 杨燕婷王天智
Owner CHENGDU ALIEBN SCI & TECH CO LTD
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