WO2020088381A1 - 一种医用加速器治疗床 - Google Patents
一种医用加速器治疗床 Download PDFInfo
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- WO2020088381A1 WO2020088381A1 PCT/CN2019/113517 CN2019113517W WO2020088381A1 WO 2020088381 A1 WO2020088381 A1 WO 2020088381A1 CN 2019113517 W CN2019113517 W CN 2019113517W WO 2020088381 A1 WO2020088381 A1 WO 2020088381A1
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- 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
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- the invention relates to the field of radiotherapy equipment, and in particular to a medical accelerator treatment bed.
- doctors can accurately position the patient's diseased part during the radiotherapy process, and perform corresponding radiotherapy on the lesion part through the provided three-dimensional image, thereby reducing the damage to other normal tissues.
- the treatment bed can realize the four-dimensional movement in the XYZ direction and the revolution around the isocenter through the three-dimensional treatment bed such as the medical accelerator treatment bed lifting system with the application number 201520811586.X and the radiation treatment system with the application number 200520119822.8.
- the cantilever structure of application number 201520811586.X due to the uneven force on the left and right of the bed board, the left and right elastic deformation of the bed board at the isocenter cannot be corrected.
- the application number is 200520119822.8, a three-dimensional treatment bed of a radiotherapy system,
- the Chinese patent with application number 200520119822.8 discloses a three-dimensional treatment bed for a radiotherapy system.
- a lifting mechanism, a lateral movement mechanism and a longitudinal movement mechanism are provided between the base and the treatment bed.
- the lateral movement mechanism is provided on the base
- the movable bracket on the seat is provided with two lifting arms on the bracket.
- the lifting mechanism is provided with a linear motion mechanism connected with the treatment bed. Because the bracket of the lateral movement mechanism of the treatment bed is provided on the base, the lifting mechanism is supported on both sides of the treatment bed by a linear motion mechanism, and the above-mentioned lack of force on the left and right of the bed board can be adjusted by adjusting the difference in the lifting amplitude of the lifting mechanism on both sides.
- the present invention provides a medical accelerator treatment bed.
- the medical accelerator treatment bed of the present invention can realize multi-dimensional motion, realize the fine adjustment of rollover and pitch, realize precise positioning, and have a simple structure. Beneficial effect of small size and stable operation.
- a medical accelerator treatment bed including:
- the horizontal drive mechanism, vertical drive mechanism, and vertical lifting mechanism are used to drive the front, back, left, right, and up and down movements of the bed board respectively;
- Longitudinal rollover fine-tuning mechanism used to drive the bedboard to rotate and fine-tune the isocenter in the longitudinal direction;
- a lateral pitch fine-tuning mechanism is used to drive the bed board to rotate and fine-tune the isocenter in the lateral direction.
- the lateral driving mechanism is slidingly connected to the longitudinal driving mechanism
- the longitudinal driving mechanism is slidingly connected to the vertical lifting mechanism
- the bed plate is fixed to the lateral driving structure.
- the longitudinal rollover fine adjustment mechanism is provided between the bed plate and the lateral drive mechanism, and the longitudinal rollover fine adjustment mechanism includes: a connecting plate, a rotating shaft and an eccentric wheel;
- the bed board is fixed on the connecting board, and one side of the connecting board is rotated and arranged in the lateral driving structure through the connecting member.
- the rotating shaft is laterally arranged in the lateral driving structure and is located under the other side of the connecting plate.
- the connecting plate is fixedly provided with an eccentric wheel for driving the connecting plate to roll over and rotate relative to the lateral driving mechanism.
- the vertical lifting mechanism includes:
- Double scissor lifting device used to drive the up and down movement of the bed board through the action of scissor
- the guide rail frame includes guide plates on both sides and front and rear connecting plates.
- the guide plates are provided with transverse grooves and fixing holes.
- the upper ends of the double-scissor lifting device are respectively fixed in the transverse grooves and fixing holes through rolling bearings.
- the longitudinal drive mechanism includes a longitudinal slider and a fixed plate, and the longitudinal slider is slidingly connected to the fixed plate;
- the lateral pitch fine adjustment mechanism includes:
- a pitching bottom plate, a fixing plate is fixed on the pitching bottom plate, and the guide rail is sleeved on the pitching bottom plate;
- a guide connection plate, a chute is formed on the guide plate, and both ends of the guide connection plate are caught in the chute by an idler wheel;
- the linear driving device is fixed between the pitching bottom plate and the guide connecting plate, and is used to drive the guide connecting plate to move along the inclined groove, so as to realize fine adjustment of the front and back isocentric rotation of the bed plate.
- the linear drive device includes: a rotating motor, a screw, a fixed block, and a sliding housing;
- the fixed block is fixed on the guide connecting plate
- the rotating motor drives the screw to rotate in the fixed block, and at the same time drives the fixed block to move relative to the sliding housing
- the pitch base plate is fixed on the sliding housing
- a displacement sensor is included for measuring the displacement of the fixing block relative to the sliding housing.
- the displacement sensor includes a baffle and an inverted U-shaped photoelectric sensor
- the baffle is fixed beside the fixed block, and the inverted U-shaped photoelectric sensor is fixed beside the sliding housing; the relative displacement measurement of the fixed block relative to the sliding housing is achieved by the inverted U-shaped photoelectric sensor sliding over the baffle.
- a guide rail and a chute are provided, which are respectively fixed on the guide connecting plate and the pitching bottom plate.
- the lateral driving mechanism includes a first lateral slider and a second lateral slider; the first lateral slider is slidingly locked in the second lateral slider.
- the horizontal drive mechanism, the vertical drive mechanism and the vertical lifting mechanism of the present invention are alternately arranged to realize the movement of the upper, lower, left and right directions of the bed board, and the volume of the whole machine is small;
- the longitudinal rollover fine adjustment mechanism of the invention rotates sideways relative to the lateral drive mechanism by the eccentric wheel on the drive connecting plate, that is, the bedplate is driven to rotate and finely adjust the left and right isocenter in the longitudinal direction, thereby realizing the unevenness of the bedplate due to uneven force
- the resulting deformation of the left and right sides greatly facilitates positioning.
- the embodiment of the lateral pitch fine adjustment mechanism of the present invention adopts a chute and branch drive installation, utilizes the space of the existing four-degree-of-freedom treatment bed, does not increase the design height of the bed, and arranges a straight line in the double scissor lift
- the driving device uses the chute to realize the nodding action of the bed board, and corrects the front and back deformation of the bed board due to its rigidity or uneven force.
- the medical accelerator treatment bed of the present invention can realize multi-dimensional motion, realize the fine adjustment of rollover and pitch, realize precise positioning, and have the advantages of simple structure, small size of the whole machine, and stable operation.
- FIG. 1 is a schematic diagram of the overall structure of the medical accelerator treatment bed of the present invention.
- FIG. 2 is a schematic diagram of the explosion structure of the medical accelerator treatment bed of the present invention.
- FIG. 3 is a schematic diagram of the overall structure of the horizontal drive mechanism and the vertical drive mechanism of the present invention.
- FIG. 4 is a schematic view of the installation structure of the longitudinal rollover fine adjustment mechanism of the present invention in the first lateral slide;
- FIG. 5 is a schematic view of the overall structure of the longitudinal drive mechanism of the present invention.
- FIG. 6 is a schematic diagram of the overall structure of the lateral pitch fine adjustment mechanism of the present invention.
- FIG. 7 is a schematic view of the installation structure of the linear drive device and the guide connecting plate of the present invention in the guide frame;
- FIG. 8 is a structural schematic diagram of the linear drive device of the present invention.
- a medical accelerator treatment bed as shown in FIGS. 1 and 2, includes:
- the horizontal drive mechanism, the vertical drive mechanism 2, and the vertical lifting mechanism 4 are used to drive the front, back, left, right, and up and down movements of the bed board, respectively;
- the longitudinal side-turning fine adjustment mechanism is used to drive the bed board to rotate and finely adjust the left and right isocenter in the longitudinal direction, thereby realizing the right and left deformation correction of the bed board due to uneven force.
- the lateral pitch fine-adjusting mechanism 3 is used to drive the bed board to rotate and finely adjust the front and back isocenter in the transverse direction, thereby realizing the correction of the front and rear deformation of the bed board due to its own rigidity or uneven force.
- the lateral drive mechanism is slidingly connected to the longitudinal drive mechanism
- the longitudinal drive mechanism is slidingly connected to the vertical lifting mechanism 4
- the bed plate is fixed to the lateral drive structure .
- the horizontal driving mechanism, the longitudinal driving mechanism 2 and the vertical lifting mechanism 4 which are staggered with each other realize the movement of the bed board in the x, y and z directions as shown in FIG. 1.
- the longitudinal rollover fine adjustment mechanism is provided between the bed plate and the lateral drive mechanism.
- the longitudinal rollover fine adjustment mechanism includes: a connecting plate 205, a rotating shaft 210, and an eccentric wheel 209;
- the bed plate 1 is fixed on the connecting plate, and one side of the connecting plate is rotatably set in the lateral driving structure through the connecting piece 208,
- the rotating shaft 210 is arranged laterally in the lateral driving structure and is located under the other side of the connecting plate 205.
- the connecting plate is fixedly provided with an eccentric wheel 209, which is used to drive the connecting plate to roll over relative to the lateral driving mechanism, that is, to drive the bed.
- the longitudinal adjustment of the left and right isocenter rotation in the longitudinal direction realizes the correction of the deformation of the left and right sides of the bed board due to the uneven force, which greatly facilitates the positioning.
- the rotating shaft can be driven by the rotating shaft or manually, and in addition to the rotating shaft and the eccentric wheel, a person skilled in the art who can lift and support the connecting plate on one side can easily replace the lifting Institutions are all within the protection scope of the present invention.
- the lateral driving mechanism includes a first lateral slider 204 and a second lateral slider 203; the first lateral slider 204 is slidably mounted in the second lateral slider.
- the second lateral slider 203, the longitudinal slider 202, and the pitch base 301 are all U-shaped. With a U-shaped design, the second lateral slider, all The longitudinal slider and the pitch base plate are clamped with each other, which greatly reduces the volume of the whole machine and does not affect the cross movement between each other.
- the two-stage drive mechanism composed of the first horizontal slider 204 and the second horizontal slider 203 greatly improves the structure and operation stability of the whole machine compared with the traditional integrated horizontal drive mechanism.
- a groove is provided in the movement of the longitudinal slider 202, a first drive motor 207 is provided in the groove, and the horizontal drive mechanism is driven by the first drive motor 207 to move relative to the longitudinal slider 202; similarly, the following pitching plate A hole is formed in 301, and a second driving motor 206 is set in the hole and drives the longitudinal slider 202 to move along the fixed plate 201 described below.
- the driving form of the first driving motor 207 and the second driving motor 207 may be gear driving, synchronous belt driving, or the like.
- the design of the above-mentioned grooves and holes provides the accommodating space for the first driving motor 207 and the second driving motor 207 without affecting the volume of the whole machine.
- the vertical lifting mechanism includes:
- Double scissor lifting device used to drive the up and down movement of the bed board through the action of scissor
- the guide rail frame as shown in FIGS. 6 and 7, includes guide plates 305 on both sides and front and rear connecting plates 309, the guide plates are provided with lateral grooves 306 and fixing holes 307, and the upper ends of the double scissor lifting device are respectively mounted on the lateral grooves and In the fixed hole, the design of the transverse groove provides space for shearing action.
- the longitudinal drive mechanism includes a longitudinal slider 202 and a fixed plate, and the longitudinal slider is slidingly connected to the fixed plate 201;
- the lateral pitch fine adjustment mechanism includes:
- Pitch bottom plate 301 the fixing plate is fixed on the pitch bottom plate, and the guide rail is sleeved on the pitch bottom plate;
- the guide connecting plate 303 is provided with an inclined groove 308, and both ends of the guide connecting plate 303 are caught in the inclined groove 308 by an idler wheel 313;
- the linear drive device is fixed between the pitching bottom plate 301 and the guide connecting plate 303, and is used to drive the guide connecting plate 303 to move along the chute to realize the fine adjustment of the front and back isocentric rotation of the bed plate.
- the chute and branch drive installation method is adopted, the existing four-degree-of-freedom treatment bed space is used, and the design height of the bed is not increased, and the linear drive device is arranged in the double scissor lifting device.
- the headboard nodded to correct the front and back deformation caused by the rigidity or uneven force of the bedboard.
- the institution can also be used in single-shear treatment beds.
- the linear drive device includes: a rotary motor 302, a screw, a fixed block 314, and a sliding housing 304;
- the fixing block 314 is fixed on the guide connecting plate 303, the rotating motor drives the screw to rotate in the fixing block, and at the same time drives the fixing block to move relative to the sliding housing, and the pitching bottom plate is fixed on the sliding housing.
- a displacement sensor which is used to measure the displacement of the fixing block relative to the sliding housing, and further determine the front and rear pitch angles of the bed board.
- the displacement sensor includes a baffle 311 and an inverted U-shaped photoelectric sensor 312;
- the baffle is fixed beside the fixed block, and the inverted U-shaped photoelectric sensor is fixed beside the sliding housing; the relative displacement measurement of the fixed block relative to the sliding housing is achieved by the inverted U-shaped photoelectric sensor sliding over the baffle.
- a guide rail and a chute are provided, which are respectively fixed on the guide connecting plate and the pitching bottom plate to provide guidance for the relative displacement of the guide connecting plate 303 and the connecting plate 205.
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Abstract
本发明提供了一种医用加速器治疗床，包括：床板，用于承载患者；横向驱动机构、纵向驱动机构、垂直升降机构，分别用于驱动床板的前后、左右、上下运动；纵向侧翻微调机构，用于驱动所述床板在纵向上左右等中心旋转微调；横向俯仰微调机构，用于驱动所述床板在横向上前后等中心旋转微调。本发明的医用加速器治疗床能够实现多维运动，实现了侧翻和俯仰微调矫正，实现了精准摆位，且具有结构简单，整机体积小，运行稳定的有益效果。
Description
本发明涉及放射治疗器械领域，具体涉及一种医用加速器治疗床。
随着放射治疗的普及，医生在放射治疗过程中可对患者患病部位进行精确的摆位，并通过所提供的三维图像对病灶部位进行相应的放射治疗，从而减少对其他正常组织的伤害。
治疗床可以通过如申请号为201520811586.X的医用加速器治疗床升降系统、及申请号为200520119822.8的一种放射治疗系统的三维治疗床实现XYZ方向和绕等中心公转的四维度运动。
其中申请号201520811586.X的这种悬臂结构，由于床板左右受力不均，导致床板在等中心处左右弹性形变是无法矫正的。
而申请号为200520119822.8的一种放射治疗系统的三维治疗床，
申请号为200520119822.8的中国专利，公开了一种放射治疗系统的三维治疗床，在基座和治疗床之间设置有升降机构、横向移动机构和纵向移动机构，所述横向移动机构为设置在基座上的可移动托架，升降机构设在托架的两个托臂上，升降机构上设有与治疗床相连接的直线运动机构。由于治疗床横向移动机构的托架设置在基座上，升降机构通过直线运动机构支撑在治疗床的两侧，可以通过调整两侧升降机构的升降幅度差，来调整上述因床板左右受力不均导致的弹性形变，但是当床板前后运动时，由于床板本身的刚性问题，床板在等中 心处的弹性变形造成的误差，四自由度床时无法修正的，迫切需要对其进行加以改进。
发明内容
为解决上述问题，本发明提供了一种医用加速器治疗床，本发明的医用加速器治疗床能够实现多维运动，实现了侧翻和俯仰微调矫正，实现了精准摆位，且具有结构简单，整机体积小，运行稳定的有益效果。
为实现所述技术目的，本发明的技术方案是：一种医用加速器治疗床，包括：
床板，用于承载患者；
横向驱动机构、纵向驱动机构、垂直升降机构，分别用于驱动床板的前后、左右、上下运动；
纵向侧翻微调机构，用于驱动所述床板在纵向上左右等中心旋转微调；
横向俯仰微调机构，用于驱动所述床板在横向上前后等中心旋转微调。
进一步，所述横向驱动机构滑动连接在所述纵向驱动机构上，所述纵向驱动机构滑动连接在所述垂直升降机构上，所述床板固定于所述横向驱动结构上。
进一步，所述纵向侧翻微调机构设置于所述床板和所述横向驱动机构之间，所述纵向侧翻微调机构包括：连接板、转轴及偏心轮；
床板固定于连接板上，连接板一侧通过连接件转动设置于横向驱 动结构内，
转轴横向设置在横向驱动结构内，并位于连接板另一侧下，连接板固定穿设偏心轮，用于驱动连接板相对所述横向驱动机构侧翻旋转。
进一步，所述垂直升降机构包括：
双剪叉升降装置，用于通过剪叉动作驱动床板的上下运动；
导轨架，包括两侧导向板及前后连接板，导向板开设横向槽和固定孔，双剪叉升降装置上端分别通过滚动轴承卡设于横向槽和固定孔中。
进一步，所述纵向驱动机构包括纵向滑块及固定板，纵向滑块滑动连接在所述固定板上；
所述横向俯仰微调机构包括；
俯仰底板，固定板固定于俯仰底板上，所述导轨架套设于俯仰底板于下；
导向连接板，所述导向板上开设斜槽，导向连接板两端通过惰轮卡置在斜槽中；
直线驱动装置，固定于俯仰底板和导向连接板之间，用于驱动导向连接板沿斜槽移动，实现所述床板前后等中心旋转微调。
进一步，所述直线驱动装置包括：旋转电机、丝杆、固定块、滑动外壳；
固定块固定于所述导向连接板上，旋转电机驱动丝杆于固定块内转动，同时驱动固定块相对滑动外壳移动，且所述俯仰底板固定于所述滑动外壳上。
进一步，还包括位移传感器，用于测量所述固定块相对滑动外壳的位移。
优选的，所述位移传感器包括挡片、倒U形光电传感器；
挡片固定于所述固定块旁，倒U形光电传感器固定于所述滑动外壳旁；通过倒U形光电传感器滑过挡片实现所述固定块相对滑动外壳的相对位移测量。
优选的，设置导轨和滑槽，分别固定于所述导向连接板上和所述俯仰底板下。
优选的，所述横向驱动机构包括第一横向滑块、第二横向滑块；第一横向滑块滑动卡设于第二横向滑块内。
本发明的有益效果在于：
1)本发明互相交错设置的横向驱动机构、纵向驱动机构、垂直升降机构实现了床板上下左右前后方向移动，且整机体积小；
2)本发明纵向侧翻微调机构通过偏心轮于驱动连接板相对所述横向驱动机构侧翻旋转，即驱动所述床板在纵向上左右等中心旋转微调，实现了对床板因受力不均而导致的左右侧变形矫正，大大方便了摆位。
3)本发明横向俯仰微调机构采用斜槽及支线驱动装机的实施方式，利用现有了现有四自由度治疗床的空间，不增加床的设计高度，并在双剪叉升降装置里布置直线驱动装置，利用斜槽，实现床板点头动作，矫正了床板因本身刚性或受力不均而导致的前后侧变形。
综上，本发明的医用加速器治疗床能够实现多维运动，实现了侧翻和俯仰微调矫正，实现了精准摆位，且具有结构简单，整机体积小， 运行稳定的有益效果。
图1是本发明医用加速器治疗床的整体结构示意图；
图2是本发明医用加速器治疗床的爆炸结构示意图；
图3是本发明横向驱动机构和纵向驱动机构的整体结构示意图；
图4是本发明纵向侧翻微调机构在第一横向滑内的安装结构示意图；
图5是本发明纵向驱动机构的整体结构示意图；
图6是本发明横向俯仰微调机构的整体结构示意图；
图7是本发明直线驱动装置和导向连接板在导向架中的安装结构示意图；
图8是本发明直线驱动装置的结构原理图。
下面将对本发明的技术方案进行清楚、完整地描述。
需要说明的是，本发明中所述的“前”、“后”、“横向”是相对于图1中三维坐标的x方向，“左”、“右”、“纵向”是相对于图1中三维坐标的y方向，“上”、“下”、“垂直”是相对于图1中三维坐标的z方向；上述方位用语均是为了说明本发明的治疗床安装及动作原理，并不能理解为对本发明的限定。
一种医用加速器治疗床，如图1和图2所示，包括：
床板1，用于承载患者；
横向驱动机构和纵向驱动机构2、垂直升降机构4，分别用于驱动床板的前后、左右、上下运动；
纵向侧翻微调机构，用于驱动所述床板在纵向上左右等中心旋转微调，实现了对床板因受力不均而导致的左右侧变形矫正。
横向俯仰微调机构3，用于驱动所述床板在横向上前后等中心旋转微调，实现了对床板因本身刚性或受力不均而导致的前后侧变形矫正。
进一步，如图3所示，所述横向驱动机构滑动连接在所述纵向驱动机构上，所述纵向驱动机构滑动连接在所述垂直升降机构4上，所述床板固定于所述横向驱动结构上。互相交错设置的横向驱动机构、纵向驱动机构2、垂直升降机构4实现了床板如图1坐标的x、y、z方向移动。
进一步，如图4所示，所述纵向侧翻微调机构设置于所述床板和所述横向驱动机构之间，所述纵向侧翻微调机构包括：连接板205、转轴210及偏心轮209；
床板1固定于连接板上，连接板一侧通过连接件208转动设置于横向驱动结构内，
转轴210横向设置在横向驱动结构内，并位于连接板205另一侧下，连接板固定穿设偏心轮209，用于驱动连接板相对所述横向驱动机构侧翻旋转，即驱动所述床板在纵向上左右等中心旋转微调，实现了对床板因受力不均而导致的左右侧变形矫正，大大方便了摆位。需要说明的是，转轴可以由转轴或手工驱动，而除了转轴及偏心轮外，能够在一侧顶升和支撑连接板的顶升电机、顶升气缸等本领域技术人 员可以进行简单替换顶升机构，均属于本发明的保护范围。
优选的，如图3所示，所述横向驱动机构包括第一横向滑块204、第二横向滑块203；第一横向滑块204滑动卡设于第二横向滑块内。在本发明的一些实施例中，优选的，所述第二横向滑块203、所述纵向滑块202、所述俯仰底板301均为U形，通过U形设计，第二横向滑块、所述纵向滑块、所述俯仰底板互相卡接，大大降低了整机体积，且不影响彼此间的交叉移动。同时，第一横向滑块204、第二横向滑块203组成的双级驱动机构，较传统一体式横向驱动机构，大大提高了整机结构和运行稳定性。
优选的，纵向滑块202运动内设置凹槽，第一驱动电机207设置于凹槽内，由第一驱动电机207驱动横向驱动机构相对所述纵向滑块202运动；同样的，下述俯仰底板301上开孔，设置第二驱动电机206传设于孔内并驱动所述纵向滑块202沿下述固定板201移动。所述第一驱动电机207、第二驱动电机207的驱动形式可以是齿轮驱动，同步带驱动等。上述凹槽和孔的设计，为第一驱动电机207、第二驱动电机207提供容置空间的同时，不影响整机体积。
进一步，所述垂直升降机构包括：
双剪叉升降装置，用于通过剪叉动作驱动床板的上下运动；
导轨架，如图6和图7所示，包括两侧导向板305及前后连接板309，导向板开设横向槽306和固定孔307，双剪叉升降装置上端分别通过滚动轴承卡设于横向槽和固定孔中，横向槽的设计提供了剪切动作空间。
进一步，所述纵向驱动机构包括纵向滑块202及固定板，纵向滑 块滑动连接在所述固定板201上；
所述横向俯仰微调机构包括；
俯仰底板301，固定板固定于俯仰底板上，所述导轨架套设于俯仰底板于下；
导向连接板303，所述导向板上开设斜槽308，导向连接板303两端通过惰轮313卡置在斜槽308中；
直线驱动装置，固定于俯仰底板301和导向连接板303之间，用于驱动导向连接板303沿斜槽移动，实现所述床板前后等中心旋转微调。采用斜槽及支线驱动装机的实施方式，利用现有了现有四自由度治疗床的空间，不增加床的设计高度，并在双剪叉升降装置里布置直线驱动装置，利用斜槽，实现床板点头动作，矫正了床板因本身刚性或受力不均而导致的前后侧变形。为进一步适应不同类型的治疗床，该机构也可用在单剪治疗床等。
进一步，如图7和图8所示，所述直线驱动装置包括：旋转电机302、丝杆、固定块314、滑动外壳304；
固定块314固定于所述导向连接板303上，旋转电机驱动丝杆于固定块内转动，同时驱动固定块相对滑动外壳移动，且所述俯仰底板固定于所述滑动外壳上。
进一步，还包括位移传感器，用于测量所述固定块相对滑动外壳的位移，进一步确定床板前后俯仰角度。
优选的，所述位移传感器包括挡片311、倒U形光电传感器312；
挡片固定于所述固定块旁，倒U形光电传感器固定于所述滑动外壳旁；通过倒U形光电传感器滑过挡片实现所述固定块相对滑动外壳 的相对位移测量。
优选的，设置导轨和滑槽，分别固定于所述导向连接板上和所述俯仰底板下，为导向连接板303和连接板205的相对位移提供导向。
对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。
Claims (10)
- 一种医用加速器治疗床，其特征在于，包括：床板，用于承载患者；横向驱动机构、纵向驱动机构、垂直升降机构，分别用于驱动床板的前后、左右、上下运动；纵向侧翻微调机构，用于驱动所述床板在纵向上左右等中心旋转微调；横向俯仰微调机构，用于驱动所述床板在横向上前后等中心旋转微调。
- 根据权利要求1所述的医用加速器治疗床，其特征在于，所述横向驱动机构滑动连接在所述纵向驱动机构上，所述纵向驱动机构滑动连接在所述垂直升降机构上，所述床板固定于所述横向驱动结构上。
- 根据权利要求2所述的医用加速器治疗床，其特征在于，所述纵向侧翻微调机构设置于所述床板和所述横向驱动机构之间，所述纵向侧翻微调机构包括：连接板、转轴及偏心轮；床板固定于连接板上，连接板一侧通过连接件转动设置于横向驱动结构内，转轴横向设置在横向驱动结构内，并位于连接板另一侧下，连接板固定穿设偏心轮，用于驱动连接板相对所述横向驱动机构侧翻旋转。
- 根据权利要求2所述的医用加速器治疗床，其特征在于，所述垂直升降机构包括：双剪叉升降装置，用于通过剪叉动作驱动床板的上下运动；导轨架，包括两侧导向板及前后连接板，导向板开设横向槽和固定孔，双剪叉升降装置上端分别通过滚动轴承卡设于横向槽和固定孔中。
- 根据权利要求3所述的医用加速器治疗床，其特征在于，所述纵向驱动机构包括纵向滑块及固定板，纵向滑块滑动连接在所述固定板上；所述横向俯仰微调机构包括；俯仰底板，固定板固定于俯仰底板上，所述导轨架套设于俯仰底板于下；导向连接板，所述导向板上开设斜槽，导向连接板两端通过惰轮卡置在斜槽中；直线驱动装置，固定于俯仰底板和导向连接板之间，用于驱动导向连接板沿斜槽移动，实现所述床板前后等中心旋转微调。
- 根据权利要求5所述的医用加速器治疗床，其特征在于，所述直线驱动装置包括：旋转电机、丝杆、固定块、滑动外壳；固定块固定于所述导向连接板上，旋转电机驱动丝杆于固定块内转动，同时驱动固定块相对滑动外壳移动，且所述俯仰底板固定于所述滑动外壳上。
- 根据权利要求6所述的医用加速器治疗床，其特征在于，还包括位移传感器，用于测量所述固定块相对滑动外壳的位移。
- 根据权利要求7所述的医用加速器治疗床，其特征在于，所述位移传感器包括挡片、倒U形光电传感器；挡片固定于所述固定块旁，倒U形光电传感器固定于所述滑动外壳旁；通过倒U形光电传感器滑过挡片实现所述固定块相对滑动外壳的相对位移测量。
- 根据权利要求4所述的医用加速器治疗床，其特征在于，设置导轨和滑槽，分别固定于所述导向连接板上和所述俯仰底板下。
- 根据权利要求2所述的医用加速器治疗床，其特征在于，所述横向驱动机构包括第一横向滑块、第二横向滑块；第一横向滑块滑动卡设于第二横向滑块内。
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