阅读说明：本技术 一种医用动力系统输出转速快慢切换装置 (Medical power system output rotating speed switching device ) 是由 季均 于 2018-08-20 设计创作，主要内容包括：本发明公开了一种医用动力系统输出转速快慢切换装置,括主机前端导向套(1)、传动齿圈(2)、第二级传动齿轮组(3)、拨档套(4)、档位导向套(5)、复位弹簧(6)、钢珠(7)、主减速器外壳(8)、钢珠(9)、定位销(10)。装置中拨档套(4)与档位导向套(5)通过定位销(10)组成一个整体,拨档套(4)上设有档位锁定口和档位导向槽。拨动档位导向套(5),钢珠(9)在拨档套(4)档位导向槽作用下,驱动传动齿圈(2)沿轴线方向左右移动,实现传动齿圈(2)与第二级传动齿轮组(5)脱离或啮合。通过改变传动齿圈(2)与第二级传动齿轮组(5)脱离或啮合实现主机减速比改变。档位切换过程中,慢速档与高速档之间设置有空档,防止在主机运转状态下切换档位而出现齿轮啮合不顺现象。本发明创造结构简单,成本低,产品安装和使用方便,社会效益大,易于推广。(The invention discloses a medical power system output rotating speed switching device which comprises a main engine front end guide sleeve (1), a transmission gear ring (2), a secondary transmission gear set (3), a gear shifting sleeve (4), a gear guide sleeve (5), a reset spring (6), steel balls (7), a main reducer shell (8), steel balls (9) and a positioning pin (10). In the device, a gear shifting sleeve (4) and a gear guide sleeve (5) form a whole through a positioning pin (10), and a gear locking opening and a gear guide groove are arranged on the gear shifting sleeve (4). The gear guide sleeve (5) is shifted, the steel balls (9) drive the transmission gear ring (2) to move left and right along the axis direction under the action of the gear guide groove of the gear shift sleeve (4), and the transmission gear ring (2) is separated from or meshed with the second-stage transmission gear set (5). The reduction ratio of the main engine is changed by changing the separation or engagement of the transmission gear ring (2) and the second-stage transmission gear set (5). In the gear switching process, a neutral gear is arranged between the low-speed gear and the high-speed gear, so that the phenomenon of gear meshing irregularity caused by gear switching in the running state of the host is prevented. The invention has the advantages of simple structure, low cost, convenient product installation and use, great social benefit and easy popularization.)

1. The utility model provides a medical driving system output rotational speed auto-change over device which characterized in that: the medical power system output rotating speed switching device comprises a main engine front end guide sleeve (1), a transmission gear ring (2), a second-stage transmission gear set (3), a gear shifting sleeve (4), a gear guide sleeve (5), a reset spring (6), steel balls (7), a main reducer shell (8), steel balls (9) and a positioning pin (10).

2. The medical power system output rotating speed switching device according to claim 1, characterized in that: the gear shifting sleeve (4) and the gear guide sleeve (5) form a whole through a positioning pin (10), and a gear locking opening and a gear guide groove are formed in the gear shifting sleeve (4); stirring gear uide bushing (5), steel ball (9) are under shifting gear cover (4) gear guide way effect, and drive transmission ring gear (2) are removed about along the axis direction, realize transmission ring gear (2) and second grade transmission gear group (5) and break away from or mesh, break away from or mesh through changing transmission ring gear (2) and second grade transmission gear group (5) and realize that the host computer speed reduction ratio changes.

Technical Field

The invention relates to the field of manufacturing of medical power systems, in particular to a device for switching the output rotating speed of a medical power system.

Background

In the orthopedic surgery, a medical power system is a medical instrument which is frequently used, and different rotating speeds and torques are needed due to different surgical positions and instruments used in the surgery. The motor is used as a power source, the output rotating speed and torque are constant, and a switching device is needed, so that the output rotating speed of the medical power system can be changed.

Disclosure of Invention

The invention aims to provide a device for switching the output rotating speed of a medical power system, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a medical power system output rotating speed switching device comprises a main engine front end guide sleeve (1), a transmission gear ring (2), a second-stage transmission gear set (3), a gear shifting sleeve (4), a gear guide sleeve (5), a reset spring (6), steel balls (7), a main reducer shell (8), steel balls (9) and a positioning pin (10).

Preferably, the gear shifting sleeve (4) and the gear guide sleeve (5) form a whole through a positioning pin (10), and a gear locking opening and a gear guide groove are formed in the gear shifting sleeve (4).

Preferably, when the gear guide sleeve (5) is shifted, the steel balls (9) drive the transmission gear ring (2) to move left and right along the axis direction under the action of the gear guide groove of the gear shift sleeve (4), so that the transmission gear ring (2) is separated from or meshed with the second-stage transmission gear set (5).

Preferably, the change of the host machine reduction ratio is realized by changing the disengagement or engagement of the transmission gear ring (2) and the second-stage transmission gear set (5).

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

fig. 1 is a schematic structural diagram of a medical power system output rotating speed switching device.

Detailed Description

According to the figure 1, the output rotating speed switching device of the medical power system comprises a main engine front end guide sleeve (1), a transmission gear ring (2), a second-stage transmission gear set (3), a gear shifting sleeve (4), a gear guide sleeve (5), a reset spring (6), steel balls (7), a main reducer shell (8), steel balls (9) and a positioning pin (10). The gear shifting sleeve (4) and the gear guide sleeve (5) form a whole through a positioning pin (10), and a gear locking opening and a gear guide groove are formed in the gear shifting sleeve (4). The gear guide sleeve (5) is shifted, the steel balls (9) drive the transmission gear ring (2) to move left and right along the axis direction under the action of the gear guide groove of the gear shift sleeve (4), and the transmission gear ring (2) is separated from or meshed with the second-stage transmission gear set (5). The reduction ratio of the main engine is changed by changing the separation or engagement of the transmission gear ring (2) and the second-stage transmission gear set (5).

The medical power system output rotating speed switching device provided by the invention does not change the rotating speed of a motor serving as a power source, and realizes the change of the host speed reduction ratio by changing the separation or engagement of the transmission gear ring (2) and the second-stage transmission gear set (5). The structure is simple and practical. In the gear switching process, a neutral gear is arranged between the low-speed gear and the high-speed gear, so that the phenomenon of gear meshing irregularity caused by gear switching in the running state of the host is prevented.