WO2012055278A1 - 一种转动装置、轴承以及放射治疗装置 - Google Patents

一种转动装置、轴承以及放射治疗装置 Download PDF

Info

Publication number
WO2012055278A1
WO2012055278A1 PCT/CN2011/078463 CN2011078463W WO2012055278A1 WO 2012055278 A1 WO2012055278 A1 WO 2012055278A1 CN 2011078463 W CN2011078463 W CN 2011078463W WO 2012055278 A1 WO2012055278 A1 WO 2012055278A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
outer ring
bearing outer
inner ring
rotating device
Prior art date
Application number
PCT/CN2011/078463
Other languages
English (en)
French (fr)
Inventor
郝建
Original Assignee
宋世鹏
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宋世鹏 filed Critical 宋世鹏
Publication of WO2012055278A1 publication Critical patent/WO2012055278A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077—Beam delivery systems
    • A61N5/1081—Rotating beam systems with a specific mechanical construction, e.g. gantries

Definitions

  • the present invention relates to a rotating device, and more particularly to a rotating device for driving the rotation of a treatment head in a radiation therapy device.
  • Radiation therapy is a method of treating diseases such as malignant tumors by using radiation such as ⁇ , ⁇ , ⁇ rays generated by radioisotopes and X-rays, electron beams, proton beams and other particle beams generated by various X-ray treatment machines or accelerators.
  • a treatment head In radiation therapy, a treatment head is needed, and the source is placed in the treatment head.
  • the human body When the radiation on the human body is irradiated, the human body lies on the treatment bed, and the radiation emitted by the radiation source in the treatment head passes through the normal tissue cells to reach the lesion, killing the tumor cells, thereby achieving the purpose of treating diseases such as malignant tumors.
  • killing the tumor cells since the radiation passes through the normal tissue cells to reach the lesion, killing the tumor cells also kills the normal tissue cells through which the rays pass, in order to avoid long-term irradiation of the normal tissue cells at the same site, the normality of the same site The tissue cells cause damage.
  • the radiation emitted by the radiation source can be injected into the lesion from different directions, that is, the radiation is incident from different parts to the lesion, so that in the case of the same radiation dose, Irradiation of normal tissue cells is spread at different locations, reducing the irradiation of normal tissue cells at the same site, thereby reducing damage to the same site.
  • the rotating device for driving the rotation of the treatment head is very complicated, which causes the entire radiation therapy device to be bulky; and because of the complicated structure of the rotating device, the rotating device has high cost, heavy weight, difficulty in assembly and transportation, and the like.
  • the present invention provides a rotating device for driving a treatment head rotation in a radiation therapy device, comprising: a bearing and a driving gear;
  • the bearing comprises: a bearing outer ring, a bearing inner ring, a ball disposed between the bearing outer ring and the bearing inner ring;
  • the bearing inner ring has external teeth; the bearing outer ring is provided with an opening at which an external tooth at a corresponding position is exposed, at which the drive gear meshes with a corresponding external tooth.
  • the bearing outer ring comprises: a first bearing outer ring and a second bearing outer ring;
  • the first bearing outer ring and the second bearing outer ring are fixedly coupled to form the bearing outer ring.
  • the fixed connection is a screw connection.
  • the opening is located between the first bearing outer ring and the second bearing outer ring.
  • the invention also provides a bearing comprising: a bearing outer ring, a bearing inner ring, a ball disposed between the bearing outer ring and the shaft 7
  • the bearing inner ring has external teeth; the bearing outer ring is provided with an opening at which the external teeth at corresponding positions are exposed.
  • the bearing outer ring comprises: a first bearing outer ring and a second bearing outer ring;
  • the first bearing outer ring and the second bearing outer ring are fixedly coupled to form the bearing outer ring.
  • the fixed connection is a screw connection.
  • the opening is located between the first bearing outer ring and the second bearing outer ring.
  • the present invention also provides a radiation therapy apparatus comprising: the above-described rotating device, and a treatment head; the treatment head being mounted inside the bearing inner ring.
  • the present invention has the following advantages:
  • the rotating device of the present invention comprises a bearing and a drive gear, the inner ring of the bearing has external teeth; the outer ring of the bearing is provided with an opening at which the external teeth of the corresponding position are exposed; wherein the drive gear meshes with the corresponding external tooth at the opening.
  • the treatment head is arranged on the inner ring of the inner ring of the bearing, and the inner ring of the bearing is driven by the driving gear to drive the rotation of the treatment head. Therefore, the present invention improves the bearing in the prior art, and on the other hand, the position of meshing with the driving gear is set at the opening position of the outer ring of the bearing, which can eliminate the rollover force during the general external tooth transmission, and can rotate the treatment head.
  • the invention can make the structure of the rotating device single, so that the entire radiation therapy device can be reduced in size, in particular, the size of the radiation therapy device in the axial direction can be greatly reduced;
  • the cost of the rotating device can be reduced, the weight of the rotating device can be reduced, and assembly and transportation are convenient.
  • Figure la is a plan view of the first type of bearing of the prior art
  • Figure lb is a cross-sectional structural view of the first type of bearing shown in Figure la along the aa direction;
  • Figure 2a is a plan view of a second type of bearing of the prior art
  • Figure 2b is a cross-sectional structural view of the second bearing shown in Figure 2a along the b-b direction;
  • Figure 3a is a plan view of a third type of bearing of the prior art
  • Figure 3b is a cross-sectional structural view of the third bearing shown in Figure 3a along the c-c direction;
  • Figure 4a is a plan view of a fourth type of bearing of the prior art
  • Figure 4b is a cross-sectional structural view of the fourth bearing shown in Figure 4a along the d-d direction;
  • Figure 5a is a plan view of a bearing of a specific embodiment of the present invention.
  • Figure 5b is a cross-sectional structural view of the bearing of the embodiment of the present invention shown in Figure 5a taken along the e-e direction;
  • Figure 5c is a cross-sectional structural view of the bearing of the embodiment of the present invention shown in Figure 5b taken along the line f-f.
  • FIG. 1a is a plan view of a first type of bearing of the prior art
  • FIG. 1b is a cross-sectional structural view of the first type of bearing shown in FIG. 1a along the aa direction.
  • the first type of bearing 10 includes The bearing outer ring 11 and the bearing inner ring 12 have outer teeth 111 which are meshed with the outer teeth 111 of the bearing outer ring 11 by the drive gear 13, so that the drive gear 13 can drive the bearing outer ring 11 to rotate. Since the first type of bearing is rotated by the outer ring, the treatment head cannot be mounted on the outer ring 11 of the bearing, and thus is not suitable for driving the treatment head to rotate.
  • FIG. 2a is a plan view of a second type of bearing of the prior art
  • FIG. 2b is a cross-sectional view of the second type of bearing shown in FIG. 2a along the bb direction.
  • the second type of bearing 20 includes The bearing outer ring 21 and the bearing inner ring 22 have inner teeth 221 which are meshed with the inner teeth 221 of the bearing inner ring 22 by the drive gear 23, so that the drive gear 23 can drive the bearing inner ring 22 to rotate.
  • the second bearing inner ring 22 has internal teeth, and the treatment head cannot be directly mounted in the inner ring of the bearing inner ring 22, and thus is not suitable for driving the treatment head to rotate.
  • the third type of bearing 30 includes Bearing outer ring 31 and bearing inner ring 32, bearing outer ring 31 has internal teeth 311, wherein bearing outer ring 31 has an extension 312 in the axial direction compared to bearing inner ring 32, and inner teeth 311 are provided in extension 312. on.
  • the driving gear 33 meshes with the internal teeth 311 of the bearing outer ring 31, so that the driving gear 33 can drive the bearing outer ring 11 to rotate.
  • the third bearing is rotated by the outer ring, and the treatment head cannot be mounted on the bearing outer ring, so It is suitable for driving the treatment head to rotate.
  • the fourth type of bearing 40 includes The bearing outer ring 41 and the bearing inner ring 42, the bearing inner ring 42 has external teeth 421, wherein the bearing inner ring 42 has an extension 422 in the axial direction compared to the bearing outer ring 41, and the outer teeth 421 are disposed on the extension 422 Upper, the drive gear 43 meshes with the external teeth 421 of the inner ring 42 so that the drive gear 43 can drive the bearing inner ring 42 to rotate.
  • the treatment head is disposed on the inner ring of the bearing inner ring 42, but because of the extension 422, the axial dimension is increased, which is not conducive to the reduction of the volume of the entire radiation therapy device. And because of the presence of the extension 422, there is a lateral turning force, which is not conducive to balance, and therefore is not suitable for use as a driving treatment head rotation.
  • the inventors have invented the bearing and the rotating device of the present invention based on the study of the bearing of the prior art, focusing on the improvement of the bearing of the prior art.
  • Figure 5a is a plan view of a rotating device according to a specific embodiment of the present invention
  • Figure 5b is a cross-sectional structural view of the rotating device of the embodiment of the present invention shown in Figure 5a along the ee direction
  • Figure 5c is a view of Figure 5b Cross-sectional structure diagram of the rotating device of the embodiment of the present invention along the ff direction, combined with reference drawing
  • the rotating device 500 of the embodiment of the present invention is used to drive the rotation of the treatment head in the radiation therapy device (the treatment head is not illustrated), comprising: a bearing 510 and a driving gear 520;
  • the bearing 510 includes: a bearing outer ring 511, a bearing inner ring 512, a ball 518 disposed between the bearing outer ring 511 and the shaft inner ring 512, the shaft inner ring 512 has external teeth 513;
  • the bearing outer ring 511 is provided with an opening 514 at which an external tooth 513 at a corresponding position is exposed, at which the drive gear 520 meshes with a corresponding external tooth 513, so that the drive gear 520 can drive the inner shaft 512 to rotate .
  • the rotating device of the embodiment of the present invention improves the prior art bearing and overcomes the conventional structure of the prior art bearing.
  • the inner ring of the bearing is provided with external teeth
  • the outer ring of the bearing is provided with an opening, and corresponding external teeth are exposed at the opening; wherein the driving gear meshes with the corresponding external teeth at the opening.
  • the treatment head is arranged inside the inner ring of the bearing, and the inner ring of the bearing is driven by the driving gear to drive the rotation of the treatment head. Therefore, the present invention improves the bearing in the prior art.
  • the position of meshing with the driving gear is set at the opening position of the outer ring of the bearing, which can eliminate the rollover force during the general external tooth transmission, and can rotate the treatment head.
  • the rotating device of the present invention has a single structure, so that the entire radiotherapy device can be reduced in size, in particular, the size of the radiotherapy device in the axial direction can be greatly reduced; and since the rotating device is simple, it can also be reduced.
  • the cost of the rotating device reduces the weight of the rotating device, and is easy to assemble and transport.
  • the bearing outer ring 511 is composed of two independent bearing outer rings, including: a first bearing outer ring 511 A and a second bearing outer ring 511B; a first bearing outer ring 511 A and a second bearing
  • the outer ring 511B is fixedly coupled to form the bearing outer ring 511.
  • the fixed connection is screwed, that is, the first bearing outer ring 511A and the second bearing outer ring 511B are fixedly connected by screws 515.
  • the first bearing outer ring 511A and the second bearing outer ring 511B are not attached at a certain position, forming an opening 514 of the shaft 511, the opening 514 exposing the outer teeth 513 of the corresponding shaft inner ring 512, Drive gear 520 also meshes with corresponding outer teeth 514 at the opening 514 such that drive gear 520 can drive the inner race of the bearing to rotate.
  • the first bearing outer ring 511A and the second bearing outer ring 511B have the same width in the axial direction, and the opening 514 is formed at an intermediate position of the bearing outer ring 511 in the axial direction, that is, The position that meshes with the driving gear and the external teeth is set in the middle position of the outer ring of the bearing, which can eliminate the lateral turning force during the general external tooth transmission, and can make the rotation of the treatment head more stable.
  • the opening does not surround the bearing inner ring 512, but only has an opening at a position of the outer ring of the bearing, and only the outer teeth of the corresponding position are exposed at the position of the opening, and the size of the opening is Sufficient to accommodate the drive gear 520.
  • the opening may also be annular, surrounding the bearing inner ring 512.
  • the inner bearing ring is of unitary construction and the outer bearing ring includes a first bearing outer ring and a second bearing outer ring.
  • the inner bearing ring may also be composed of a first bearing inner ring and a second bearing inner ring, such as a bearing outer ring, and the first bearing inner ring and the second inner ring bearing are fixed together. Bearing inner ring.
  • the number of outer races of the bearing and the inner race of the bearing may be adjusted depending on the load to which the bearing is subjected, i.e., the weight of the treatment head. For example, if the treatment head is lighter, or if the bearing is more capable of withstanding the load, a single bearing can be used to drive the treatment head to rotate. If the treatment head is heavier or the bearing is less able to withstand the load, multiple bearings can be used to drive the treatment head to rotate, that is, to combine the multiple bearings to drive the treatment head to rotate.
  • the present invention also provides a bearing, the specific embodiment of which is described in the above described rotating device
  • the detailed description thereof has been made, and those skilled in the art can clearly understand the specific embodiment of the bearing according to the above description of the rotating device.
  • the present invention also provides a radiation therapy apparatus comprising a treatment head and the above-described rotation apparatus, wherein the treatment head is mounted to an inner ring of the bearing inner ring.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

一种转动装置、轴承以及放射治疗装置，转动装置，用于带动放射治疗装置中的治疗头转动，包括：轴承和驱动齿轮；所述轴承包括：轴承外圈、轴承内圈，设于所述轴承外圈和轴承内圈之间的滚珠，所述轴承内圈具有外齿；所述轴承外圈设有开口，露出所述外齿，在所述开口处所述驱动齿轮与所述外齿啮合。本发明通过改进现有技术中的轴承，转动装置结构简单，从而可以使整个放射治疗装置体积缩小，尤其可以大大缩小放射治疗装置在轴向方向的尺寸；而且由于转动装置结构简单，也可以降低转动装置的成本，减轻转动装置的重量，组装以及运输方便。

Description

一种转动装置、 轴承以及放射治疗装置 本申请要求于 2010年 10 月 29 日提交中国国家知识产权局、 申请号为 201010526909.2 、 发明名称为"一种转动装置、 轴承以及放射治疗装置"的中 国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及一种转动装置，尤其涉及一种用于带动放射治疗装置中的治疗 头转动的转动装置。
背景技术
放射治疗是利用放射线如放射性同位素产生的 α、 β、 γ射线和各类 χ射线 治疗机或加速器产生的 X射线、 电子线、质子束及其它粒子束等治疗恶性肿瘤 等疾病的一种方法。
在放射治疗时， 需要用治疗头， 放射源置于治疗头内。 在对人体上的病灶 进行放射治疗时，人体躺在治疗床上， 治疗头内的放射源放射的射线穿过正常 组织细胞到达病灶，杀死肿瘤细胞，从而可以达到治疗恶性肿瘤等疾病的目的。 然而， 由于射线穿过正常组织细胞到达病灶， 杀死肿瘤细胞时， 同时也会杀死 射线所经过的正常组织细胞，为了避免对同一部位的正常组织细胞的长时间照 射， 对同一部位的正常组织细胞造成伤害， 可以通过转动治疗头， 使放射源放 射的射线从不同的方向射入病灶内， 即， 使射线从不同的部位入射至病灶， 这 样，在同样的放射剂量的情况下，将对正常组织细胞的照射分散在不同的部位， 减少对同一部位的正常组织细胞的照射， 从而可以减小对同一部位的伤害。
现有技术中， 带动治疗头转动的转动装置非常复杂，造成了整个放射治疗 装置体积庞大； 而且由于转动装置的结构复杂， 造成了转动装置成本高， 重量 重， 组装以及运输困难等问题。
发明内容
本发明解决的问题是现有技术的用于放射治疗装置的转动装置结构复杂。 为解决上述问题， 本发明提供一种转动装置， 用于带动放射治疗装置中的 治疗头转动， 包括： 轴承和驱动齿轮； 所述轴承包括： 轴承外圈、 轴承内圈， 设于所述轴承外圈和轴承内圈之间 的滚珠；
所述轴承内圈具有外齿； 所述轴承外圈设有开口， 在所述开口处露出相应 位置的外齿， 在所述开口处所述驱动齿轮与相应的外齿啮合。
可选的， 所述轴承外圈包括： 第一轴承外圈和第二轴承外圈；
所述第一轴承外圈和所述第二轴承外圈固定连接形成所述轴承外圈。
可选的， 所述固定连接为螺接。
可选的， 所述开口位于所述第一轴承外圈和所述第二轴承外圈之间。
本发明还提供一种轴承， 包括： 轴承外圈、 轴承内圈， 设于所述轴承外圈 和轴 7|内圈之间的滚珠；
所述轴承内圈具有外齿； 所述轴承外圈设有开口， 在所述开口处露出相应 位置的外齿。
可选的， 所述轴承外圈包括： 第一轴承外圈和第二轴承外圈；
所述第一轴承外圈和所述第二轴承外圈固定连接形成所述轴承外圈。
可选的， 所述固定连接为螺接。
可选的， 所述开口位于所述第一轴承外圈和所述第二轴承外圈之间。
本发明还提供一种放射治疗装置， 包括： 以上所述的转动装置， 以及治疗 头； 所述治疗头安装于所述轴承内圈的内部。
与现有技术相比， 本发明具有以下优点：
本发明的转动装置包括轴承和驱动齿轮， 轴承内圈具有外齿； 轴承外圈设 开口， 在该开口处露出相应位置的外齿； 其中， 在开口处驱动齿轮与相应的外 齿啮合。 治疗头设于轴承内圈的内圈， 由驱动齿轮驱动轴承内圈转动， 从而带 动治疗头旋转。 因此， 本发明通过改进现有技术中的轴承， 一方面， 将与驱动 齿轮啮合的位置设置在轴承外圈的开口位置，可以消除一般外齿传动时的侧翻 力， 可以使治疗头的转动更加平稳； 另一方面， 本发明可以使转动装置结构筒 单，从而可以使整个放射治疗装置体积缩小， 尤其可以大大缩小放射治疗装置 在轴向方向的尺寸；而且由于转动装置结构筒单，也可以降低转动装置的成本， 减轻转动装置的重量， 组装以及运输方便。
附图说明
图 la是现有技术的第一种轴承的平面结构图； 图 lb是图 la所示的第一种轴承沿 a-a方向的剖面结构图；
图 2a是现有技术的第二种轴承的平面结构图；
图 2b是图 2a所示的第二种轴承沿 b-b方向的剖面结构图；
图 3a是现有技术的第三种轴承的平面结构图；
图 3b是图 3a所示的第三种轴承沿 c-c方向的剖面结构图；
图 4a是现有技术的第四种轴承的平面结构图；
图 4b是图 4a所示的第四种轴承沿 d-d方向的剖面结构图；
图 5a是本发明的具体实施例的轴承的平面结构图；
图 5b是图 5a所示的本发明的具体实施例的轴承沿 e-e方向的剖面结构图； 图 5c是图 5b所示的本发明的具体实施例的轴承沿 f-f方向的剖面结构图。 具体实施方式
发明人在发现现有技术的问题后，致力于改进现有技术中的转动装置， 期 望可以将轴承用于放射治疗装置中， 带动治疗头旋转。现有技术中的轴承主要 有四种：
图 la是现有技术的第一种轴承的平面结构图， 图 lb是图 la所示的第一 种轴承沿 a-a方向的剖面结构图， 结合参考图 la和图 lb, 第一种轴承 10包括 轴承外圈 11和轴承内圈 12, 轴承外圈 11具有外齿 111 , 由驱动齿轮 13与轴 承外圈 11的外齿 111啮合， 从而驱动齿轮 13可以驱动轴承外圈 11旋转。 该 第一种的轴承由于是外圈旋转， 治疗头不能安装于轴承外圈 11上， 因此不适 合用作带动治疗头转动。
图 2a是现有技术的第二种轴承的平面结构图， 图 2b是图 2a所示的第二 种轴承沿 b-b方向的剖面结构图， 结合参考图 2a和图 2b, 第二种轴承 20包括 轴承外圈 21和轴承内圈 22, 轴承内圈 22具有内齿 221 , 由驱动齿轮 23与轴 承内圈 22的内齿 221啮合， 从而驱动齿轮 23可以驱动轴承内圈 22旋转。 该 第二种轴承内圈 22具有内齿，不可以直接将治疗头安装于轴承内圈 22的内圈 中， 因此不适合用作带动治疗头转动。
图 3a是现有技术的第三种轴承的平面结构图， 图 3b是图 3a所示的第三 种轴承沿 c-c方向的剖面结构图， 结合参考图 3a和图 3b, 第三种轴承 30包括 轴承外圈 31和轴承内圈 32 , 轴承外圈 31具有内齿 311 , 其中， 在轴向方向上 轴承外圈 31与轴承内圈 32相比具有延伸段 312,内齿 311设于延伸段 312上。 由驱动齿轮 33与轴承外圈 31的内齿 311啮合， 从而驱动齿轮 33可以驱动轴 承外圈 11旋转， 该第三种轴承由于是外圈旋转， 治疗头不能安装于轴承外圈 上， 因此不适合用作带动治疗头转动。
图 4a是现有技术的第四种轴承的平面结构图， 图 4b是图 4a所示的第四 种轴承沿 d-d方向的剖面结构图， 结合参考图 4a和图 4b , 第四种轴承 40包括 轴承外圈 41和轴承内圈 42, 轴承内圈 42具有外齿 421 , 其中， 在轴向方向上 轴承内圈 42与轴承外圈 41相比具有延伸段 422,外齿 421设于延伸段 422上， 由驱动齿轮 43与轴 内圈 42的外齿 421啮合， 从而驱动齿轮 43可以驱动轴 承内圈 42旋转。 如果该第四种轴承用于转动装置带动治疗头旋转， 治疗头设 于轴承内圈 42的内圈， 但是由于具有延伸段 422, 这样会增加轴向尺寸， 不 利于整个放射治疗装置体积的缩小，而且由于延伸段 422的存在，存在侧翻力， 不利于平衡， 因此也不适合用作带动治疗头转动。
发明人基于对现有技术的轴承的研究， 着力于改进现有技术的轴承，发明 了本发明的轴承、 转动装置。
图 5a是本发明的具体实施例的转动装置的平面结构图， 图 5b是图 5a所 示的本发明的具体实施例的转动装置沿 e-e方向的剖面结构图， 图 5c是图 5b 所示的本发明的具体实施例的转动装置沿 f-f方向的剖面结构图， 结合参考图
5a、 图 5b和图 5c, 本发明具体实施方式的转动装置 500, 用于带动放射治疗 装置中的治疗头转动 （图中没有示意出治疗头）， 包括： 轴承 510和驱动齿轮 520; 所述轴承 510 包括： 轴承外圈 511、 轴承内圈 512 , 设于所述轴承外圈 511和轴^内圈 512之间的滚珠 518 , 所述轴 内圈 512具有外齿 513; 所述 轴承外圈 511设有开口 514, 在所述开口 514处露出相应位置的外齿 513 , 在 所述开口 514处所述驱动齿轮 520与相应的外齿 513啮合， 从而驱动齿轮 520 可以驱动轴 内圈 512旋转。
本发明具体实施方式的转动装置， 改进了现有技术的轴承，克服了现有技 术中轴承的传统结构。 轴承内圈设外齿， 轴承外圈设开口， 在该开口处露出相 应的外齿； 其中， 在开口处驱动齿轮与相应的外齿啮合。 治疗头设于轴承内圈 的内部， 由驱动齿轮驱动轴承内圈转动， 从而带动治疗头旋转。 因此， 本发明 通过改进现有技术中的轴承，一方面， 将与驱动齿轮啮合的位置设置在轴承外 圈的开口位置， 可以消除一般外齿传动时的侧翻力， 可以使治疗头的转动更加 平稳； 另一方面， 本发明的转动装置结构筒单， 从而可以使整个放射治疗装置 体积缩小， 尤其可以大大缩小放射治疗装置在轴向方向的尺寸； 而且由于转动 装置结构筒单， 也可以降低转动装置的成本， 减轻转动装置的重量， 组装以及 运输方便。
在本发明具体实施例中，轴承外圈 511由两个独立的轴承外圈组成，包括： 第一轴承外圈 511 A和第二轴承外圈 511B; 第一轴承外圈 511 A和第二轴承外 圈 511B固定连接形成所述轴承外圈 511。 在本发明具体实施例中， 所述固定 连接为螺接， 即第一轴承外圈 511A和第二轴承外圈 511B通过螺钉 515固定 连接。 第一轴承外圈 511A和第二轴承外圈 511B在某一位置没有贴合， 形成 了轴^ ^卜圈 511的开口 514,该开口 514暴露出相应的轴^内圈 512的外齿 513 , 驱动齿轮 520也在该开口 514处与相应的外齿 514啮合， 从而驱动齿轮 520 可以带动轴承内圈旋转。 在本发明的具体实施例中， 第一轴承外圈 511A和第 二轴承外圈 511B在轴向方向的宽度相等， 开口 514形成在轴承外圈 511沿轴 向方向的中间位置，也就是，将与驱动齿轮与外齿啮合的位置设置在轴承外圈 的中间位置， 可以消除一般外齿传动时的侧翻力， 可以使治疗头的转动更加平 稳。
在本发明的具体实施例中， 开口不环绕轴承内圈 512 , 而是只在轴承外圈 的某一位置具有开口， 只在开口的位置处暴露出相应位置的外齿， 该开口的大 小要足以容纳驱动齿轮 520。 在本发明的其他实施例中， 开口也可以为环形， 环绕轴承内圈 512。
在本发明的图示的所示的具体实施例中， 轴承内圈为一体结构， 轴承外圈 包括第一轴承外圈和第二轴承外圈。在本发明的其他实施例中， 轴承内圈也可 以如轴承外圈那样， 由第一轴承内圈和第二轴承内圈组成，将第一轴承内圈和 第二内圈轴承固定在一起形成轴承内圈。
在本发明的其他实施例中， 可以根据轴承所要承受的负载， 即治疗头的重 量， 调整构成轴承外圈以及轴承内圈的数量。 例如， 如果治疗头重量较轻， 或 者轴承的承受负载的能力较强， 则可以用一个单个的轴承带动治疗头旋转。如 果治疗头重量较重，或者轴承的承受负载的能力较弱， 则可以用多个轴承带动 治疗头旋转， 即， 将多个轴承组合起来一起带动治疗头旋转。
本发明还提供一种轴承，其具体实施方式在对以上所述的转动装置的描述 中，已经对其做了详细的说明，本领域技术人员根据以上对转动装置的描述中， 可以清楚的知道轴承的具体实施方式。
本发明还提供一种放射治疗装置，该放射治疗装置包括治疗头以及以上所 述的转动装置， 其中所述治疗头安装于所述轴承内圈的内圈。
以上所述仅为本发明的具体实施例，为了使本领域技术人员更好的理解本 发明的精神，然而本发明的保护范围并不以该具体实施例的具体描述为限定范 围，任何本领域的技术人员在不脱离本发明精神的范围内， 可以对本发明的具 体实施例做修改， 而不脱离本发明的保护范围。

Claims

权 利 要 求
1、 一种转动装置， 用于带动放射治疗装置中的治疗头转动， 包括： 轴承 和驱动齿轮；
所述轴承包括： 轴承外圈、 轴承内圈， 设于所述轴承外圈和轴承内圈之间 的滚珠， 其特征在于：
所述轴承内圈具有外齿； 所述轴承外圈设有开口， 在所述开口处露出相应 位置的外齿， 在所述开口处所述驱动齿轮与相应的外齿啮合。
2、 如权利要求 1所述的转动装置， 其特征在于， 所述轴承外圈包括： 第 一轴承外圈和第二轴承外圈；
所述第一轴承外圈和所述第二轴承外圈固定连接形成所述轴承外圈。
3、 如权利要求 2所述的转动装置， 其特征在于， 所述固定连接为螺接。
4、 如权利要求 2所述的转动装置， 其特征在于， 所述开口位于所述第一 轴承外圈和所述第二轴承外圈之间。
5、 一种轴承， 包括： 轴承外圈、 轴承内圈， 设于所述轴承外圈和轴承内 圈之间的滚珠， 其特征在于：
所述轴承内圈具有外齿； 所述轴承外圈设有开口， 在所述开口处露出相应 位置的外齿。
6、 如权利要求 5所述的轴承， 其特征在于， 所述轴承外圈包括： 第一轴 承外圈和第二轴承外圈；
所述第一轴承外圈和所述第二轴承外圈固定连接形成所述轴承外圈。
7、 如权利要求 6所述的轴承， 其特征在于， 所述固定连接为螺接。
8、 如权利要求 5所述的轴承， 其特征在于， 所述开口位于所述第一轴承 外圈和所述第二轴承外圈之间。
9、 一种放射治疗装置， 其特征在于包括： 权利要求 1~4任一项所述的转 动装置， 以及治疗头； 所述治疗头安装于所述轴承内圈的内部。
PCT/CN2011/078463 2010-10-29 2011-08-16 一种转动装置、轴承以及放射治疗装置 WO2012055278A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010526909.2 2010-10-29
CN2010105269092A CN102451522A (zh) 2010-10-29 2010-10-29 一种转动装置、轴承以及放射治疗装置

Publications (1)

Publication Number Publication Date
WO2012055278A1 true WO2012055278A1 (zh) 2012-05-03

Family

ID=45993144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/078463 WO2012055278A1 (zh) 2010-10-29 2011-08-16 一种转动装置、轴承以及放射治疗装置

Country Status (2)

Country Link
CN (1) CN102451522A (zh)
WO (1) WO2012055278A1 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736507A (zh) * 2004-08-17 2006-02-22 宋世鹏 一种新型放射线治疗装置
CN201521622U (zh) * 2009-09-29 2010-07-07 重庆齿轮箱有限责任公司 大功率船用齿轮箱小齿轮轴的轴承配置结构
CN201564993U (zh) * 2009-09-04 2010-09-01 上海霍普威尔机电技术有限公司 “医用直线加速器”单轴承支撑机架旋转机构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736507A (zh) * 2004-08-17 2006-02-22 宋世鹏 一种新型放射线治疗装置
CN201564993U (zh) * 2009-09-04 2010-09-01 上海霍普威尔机电技术有限公司 “医用直线加速器”单轴承支撑机架旋转机构
CN201521622U (zh) * 2009-09-29 2010-07-07 重庆齿轮箱有限责任公司 大功率船用齿轮箱小齿轮轴的轴承配置结构

Also Published As

Publication number Publication date
CN102451522A (zh) 2012-05-16

Similar Documents

Publication Publication Date Title
JP5054335B2 (ja) ホウ素中性子捕捉療法用の医療装置
CN108156742B (zh) 中子束源产生器及其滤屏
US20070221869A1 (en) Radiotherapy apparatus
US20170239496A1 (en) Radiation therapy system
CN110382049A (zh) 放射治疗系统和方法
CN105920746A (zh) 一种放射治疗设备
US11759659B2 (en) Radiation therapy system
WO2017032345A1 (zh) 适形调强放疗装置
WO2012040964A1 (zh) 放射治疗装置、辐射装置及准直装置
CN109350867B (zh) 一种用于旋转机架内部转动背板的结构
US20220096871A1 (en) Rotating gantry and radiotherapy equipment
WO2012055278A1 (zh) 一种转动装置、轴承以及放射治疗装置
US20220233885A1 (en) Radiation therapy system
JPH07255867A (ja) ３次元粒子線照射装置
CN205924727U (zh) 一种放射治疗设备
CN107569779A (zh) 中子治疗装置
CN110201318A (zh) 一种诊疗自动防护装置
Subramanian et al. Linear accelerators used for IMRT should be designed as small field, high intensity, intermediate energy units
CN218871080U (zh) 放疗设备
US11510308B2 (en) Neutron beam generating device
CN203647880U (zh) 高能x射线防护装置
RU2012140480A (ru) Медицинский прибор, работающий с рентгеновскими лучами, и способ его функционирования
US20220079534A1 (en) Apparatus for fast cone-beam tomography and extended sad imaging in radiation therapy
JPH1094617A (ja) 放射線治療用の加速器照射装置
WO2020215664A1 (zh) 放射治疗装置及放射治疗方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11835552

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 06/08/2013)

122 Ep: pct application non-entry in european phase

Ref document number: 11835552

Country of ref document: EP

Kind code of ref document: A1