Shaft lever fixing system

Abstract

The utility model provides a shaft rod fixing system, and particularly relates to the field of high-speed power abrasive drills. Comprising a fixed outer pipe, a fixed inner pipe, a spacing sleeve, a spring, a gasket, an S-shaped groove and a hollow plug screw. Compared with a traditional bearing, the shaft rod fixing system adopts copper, ceramic and synthetic materials to replace the traditional bearing, the requirement for the manufacturing process is reduced, most domestic production enterprises meet the production standard, meanwhile, the production cost and the market selling price are greatly reduced, and the use requirement of a base-layer production mechanism is met. The lubricating liquid in the S-shaped or special-shaped grooves in the inner walls of the fixed inner pipes can reduce friction force between the fixed inner pipes and the shaft rod, heat generated by friction between the fixed inner pipes and the shaft rod is taken away, and the fixed inner pipes and the shaft rod are prevented from being damaged by high temperature; and a plurality of sections of fixed inner pipes and interval sleeves can be combined for fixing the super-long shaft lever.

Description

Technical Field

[0001] The utility model relates to a device for fixing a shaft rod, in particular to a high-speed grinding drill. Background Art

[0002] With the rapid development of minimally invasive surgery, its application field continues to penetrate into surrounding disciplines, and power tool technology has become a widely used electric medical instrument. Doctors can not only directly and quickly remove diseased tissues of human organs and fix implants in the body through power tools, but also use high-speed grinding drills to further treat the diseased tissues after observing the diseased tissues under the endoscope. Its treatment advantages have been recognized by the minimally invasive surgery community. At present, grassroots hospitals are unable to solve the problem of using high-speed grinding drills due to funding conditions and other factors, and are still using open surgery for treatment, which is not conducive to patient recovery and increases treatment time and costs. At the same time, most of the existing grinding drills in the clinic are imported brands, which are expensive and easy to wear. The reason is that the shaft is fixed with bearings. The bearings generate heat when rotating at high speed and are easily damaged, and are more likely to get stuck and locked when encountering saline and blood. Utility Model Content

[0003] The purpose of the present invention is to provide a shaft fixing system to solve the problems raised by the above-mentioned background technology. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a shaft fixing system, including: a fixed outer tube, a fixed inner tube, a spacing sleeve, a spring, a gasket, and a hollow screw plug. Compared with traditional bearings, the shaft fixing system adopts copper, ceramics, and synthetic materials to replace traditional bearings, which reduces the requirements for manufacturing processes, allowing most domestic manufacturers to meet their production standards, while also greatly reducing production costs and market prices, meeting the use needs of grassroots production organizations. The lubricating liquid in the "S"-shaped groove or special-shaped groove on the inner wall of the fixed inner tube can reduce the friction between the fixed inner tube and the shaft, and take away the heat generated by the friction between the fixed inner tube and the shaft, avoiding high temperature damage to the fixed inner tube and the shaft. A spacing sleeve is added between the two fixed inner tubes, or a multi-section fixed inner tube and a spacing sleeve are combined for fixing an extra-long shaft.

[0006] Preferably, the inner wall of the fixed inner tube (2) has a plurality of "S"-shaped grooves (7) or special-shaped grooves.

[0007] Preferably, the fixing inner tube (2) and the spacing sleeve (3) can be used in combination in multiple sections for fixing an extra-long shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the inner wall structure of the fixed inner tube in the shaft rod fixing system of the utility model.

[0009] Figure 2 It is a schematic cross-sectional structure diagram of the relationship between the fixed inner tube, the fixed outer tube and the shaft rod in the shaft rod fixing system of the utility model.

[0010] Figure 3 It is a schematic diagram of the overall structure of the shaft rod fixing system of the utility model. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0012] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same reference numerals represent the same or corresponding technical features. Each of the accompanying drawings is only a schematic diagram and is not necessarily drawn according to the actual scale.

[0013] See also Figure 1 , Figure 2 and Figure 3 As shown in the figure, the shaft fixing system comprises: a fixed outer tube (1), a fixed inner tube (2), a spacing sleeve (3), a spring (4), and a gasket (5), wherein the fixed outer tube (1) and the fixed inner tube (2) are overlapped without gap, the length to diameter ratio of the fixed inner tube (2) is 1:2.4, and the inner wall of the fixed inner tube (2) has a plurality of "S"-shaped grooves (7) or special-shaped grooves; the length ratio of the spacing sleeve (3) to the fixed inner tube (2) is 1:6-10, and the inner diameter of the spacing sleeve (3) is larger than the inner diameter of the fixed inner tube (2); the spring (4) and the gasket (5) are used to pressurize and fix the fixed inner tube (2) and the spacing sleeve (3) to be tightly combined without axial displacement, so that they are tightly fixed inside the fixed outer tube (1), and one end of the shaft fixing system is fixed by laser welding, and the other end is fixed by a hollow screw plug (8). Pressurized fixing can be achieved and disassembly, cleaning and maintenance are also convenient.

[0014] The shaft fixing system uses copper, ceramics, and synthetic materials to replace traditional bearings, which reduces the requirements for manufacturing processes, allowing most domestic manufacturers to meet their production standards, while also greatly reducing production costs and market prices, meeting the use needs of grassroots production organizations. The lubricating liquid in the "S"-shaped groove (7) or special-shaped groove on the inner wall of the fixed inner tube can reduce the friction between the fixed inner tube (2) and the shaft (6), and take away the heat generated by the friction between the fixed inner tube (2) and the shaft (6), avoiding high temperature damage to the fixed inner tube (2) and the shaft (6). A spacing sleeve is added between the two fixed inner tubes, or a multi-section fixed inner tube and a spacing sleeve are combined for fixing an extra-long shaft.

[0015] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shaft fixing system, characterized in that: include: A fixed outer tube (1), a fixed inner tube (2), a spacing sleeve (3), a spring (4), a gasket (5), a shaft (6), an "S"-shaped groove (7), and a hollow screw plug (8), wherein the fixed outer tube (1) and the fixed inner tube (2) are overlapped without gap, the length to diameter ratio of the fixed inner tube (2) is 1:2.4, and the inner wall of the fixed inner tube (2) has a plurality of "S"-shaped grooves or special-shaped grooves; the length ratio of the spacing sleeve (3) to the fixed inner tube (2) is 1:6-10, and the inner diameter of the spacing sleeve (3) is larger than the inner diameter of the fixed inner tube (2); the spring (4) and the gasket (5) are used to pressurize and fix the fixed inner tube (2) and the spacing sleeve (3) to be tightly combined without axial displacement, and are tightly fixed inside the fixed outer tube (1).

2. The shaft fixing system according to claim 1, characterized in that: The fixed inner tube (2) and the spacer sleeve (3) can be used in combination in multiple sections for fixing an extra-long shaft.

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