Guiding support assembly of rotating floor and rotating treatment room of proton therapy device

Abstract

The application relates to a guide support assembly of a rotary floor, which comprises a fixed bin and a suspended bin arranged in parallel along an axial direction, a first floor guide rail is arranged on the fixed bin in a circumferential direction, a second floor guide rail is arranged on the suspended bin in a circumferential direction, the first floor guide rail and the second floor guide rail are respectively arranged in sliding connection with two ends of a floor assembly, and the suspended bin is fixedly connected with the fixed bin. The guide support assembly of the rotary floor of the application is connected with the fixed bin and keeps the bottom horizontal, thereby providing support and guidance for the floor assembly and enabling the floor assembly to rotate by 360 degrees.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of proton therapy devices, and more particularly to a guide support assembly of a rotating floor and a rotating treatment room of a proton therapy device. BACKGROUND

[0002] A proton therapy device usually has a 360-degree rotating gantry and can realize 360-degree rotation. A circular slot is needed as a running track for the treatment head during rotation. There is an arc-shaped pit of about 1 meter between the slot and the ground plane. To avoid the possibility of patients and doctors falling into the pit and causing safety hazards, a floor that rotates synchronously with the treatment head is usually provided to shield the slot and eliminate safety hazards, and to make it more beautiful.

[0003] A rotating floor is disclosed in Chinese patent application with publication number CN114042261A, which includes a flexible chain floor assembly and two parallel guide support devices. The flexible chain floor assembly is in sliding connection with the two guide support devices. The flexible chain floor assembly has an opening, and the treatment head passes through the opening and is connected with the flexible chain floor assembly, thereby driving the flexible chain floor assembly to rotate circumferentially along the guide support devices.

[0004] The guide support device is the movement base of the treatment head and the flexible chain floor assembly. Its structure and stability will affect the normal operation of the rotating floor. SUMMARY

[0005] The present application aims to provide a guide support assembly of a rotating floor and a rotating treatment room of a proton therapy device, which is used to provide support and guidance for the floor assembly to ensure the normal operation of the floor assembly.

[0006] To achieve the above purpose, the present application provides a guide support assembly, which includes a fixed bin and a suspended bin arranged in parallel along the axial direction. The fixed bin is provided with a first floor guide rail in the circumferential direction. The suspended bin is provided with a second floor guide rail in the circumferential direction. The first floor guide rail and the second floor guide rail are respectively arranged in sliding connection with both ends of the floor assembly. The suspended bin is fixedly connected with the fixed bin.

[0007] Further, a plurality of connecting plates are arranged on the fixed bin to be fixedly connected with the base through the connecting plates.

[0008] Further, at least one telescopic rod is arranged on the fixed bin, and a mounting hole matched with the telescopic rod is arranged on the suspended bin. The telescopic rod is inserted into the mounting hole to fixedly connect the fixed bin and the suspended bin.

[0009] Further, the telescopic rods are two, respectively located in the positive half circle and the negative half circle, when the treatment head rotates in the positive half circle, the telescopic rod located in the positive half circle is retracted, the telescopic rod located in the negative half circle is extended and fixedly connected with the suspension bin; when the treatment head rotates in the negative half circle, the telescopic rod located in the negative half circle is retracted, the telescopic rod located in the positive half circle is extended and fixedly connected with the suspension bin.

[0010] Further, the suspension bin is mounted on two mounting guide rails of the rotating gantry, and the mounting guide rails are arranged in the circumferential direction.

[0011] Further, a support wheel assembly is arranged on the bottom of the suspension bin, the support wheel assembly comprises a first shaft fixed on the bottom of the suspension bin, both ends of the first shaft are provided with chain plates, the chain plates are movably connected with the first shaft, both sides of the chain plates are respectively provided with a second shaft and a third shaft, both ends of the second shaft are fixedly connected with the two chain plates, both ends of the third shaft are fixedly connected with the two chain plates, both ends of the second shaft and both ends of the third shaft are provided with support wheels.

[0012] Further, an axial support assembly is arranged on the suspension bin, the axial support assembly comprises an axial leaning wheel, a fixed plate, an adjusting head and a crankshaft, the crankshaft is threadedly connected with the fixed plate, the axial leaning wheel and the adjusting head are respectively arranged at both ends of the crankshaft, and a first locking nut is further arranged on the crankshaft.

[0013] Further, a radial support assembly is arranged on the suspension bin, the radial support assembly comprises an inner frame, a radial leaning wheel and a screw rod, the radial leaning wheel is arranged in the inner frame through the screw rod, and the screw rod is threadedly connected with the inner frame, so that the axial position of the radial leaning wheel can be adjusted by rotating the screw rod.

[0014] Further, an inclination sensor is arranged on the bottom of the suspension bin, for monitoring the inclination angle between the bottom of the suspension bin and the horizontal plane.

[0015] Another aspect of the present application provides a rotating treatment room of a proton therapy device, comprising a rotating gantry, a treatment head, a floor assembly and a guide support assembly as described above, the suspension bin of the guide support assembly is mounted on the inner side of the rotating gantry, the treatment head passes through the opening on the floor assembly and is connected with the floor assembly, the rotating gantry is connected with the treatment head, and the fixed bin is fixed on the base.

[0016] The rotating floor guide support assembly and the rotating treatment chamber of the proton therapy device of the present invention have a suspended chamber connected to a fixed chamber, and the bottom of the chamber is kept horizontal, thereby providing support and guidance for the floor assembly, enabling the floor assembly to rotate 360 ​​degrees. The fixed chamber and the suspended chamber are connected by a telescopic rod that is half a turn different from the treatment head, which ensures that the treatment head can smoothly complete the 360-degree rotation. The levelness of the bottom of the suspended chamber is monitored by a tilt sensor. When the bottom tilt angle exceeds a preset value, an alarm is issued and the rotating frame stops rotating to avoid damage to the floor assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the guide support assembly for the rotating floor according to an embodiment of the present invention;

[0018] Figure 2 This is an assembly diagram of the guide support assembly of the rotating floor in the rotating frame according to an embodiment of the present invention;

[0019] Figure 3 This is a partial structural schematic diagram of the rotating frame of a proton therapy device according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the suspension chamber of the guide support assembly according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the support wheel assembly of the suspension tank according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the axial support assembly of the suspended chamber according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the bottom of the suspension tank according to an embodiment of the present invention;

[0024] Figure 8A This is a schematic diagram of the structure of a radial support assembly according to an embodiment of the present invention;

[0025] Figure 8B for Figure 8A A schematic diagram of the radial support assembly after the side plates have been removed;

[0026] Figure 9 This is a partial schematic diagram of a side view according to an embodiment of the present invention. Detailed Implementation

[0027] The preferred embodiments of the present invention are given below with reference to the accompanying drawings and described in detail.

[0028] like Figure 1As shown, this embodiment of the invention provides a guide support assembly for a rotating gantry, including a fixed chamber 100 and a suspended chamber 200 arranged parallel to each other along the axial direction and spaced apart. Both the fixed chamber 100 and the suspended chamber 200 are cylindrical structures, including a horizontal bottom and an arc-shaped portion. A first floor guide rail 110 is arranged circumferentially on the fixed chamber 100, and a second floor guide rail 210 is arranged circumferentially on the suspended chamber 200. The first floor guide rail 110 and the second floor guide rail 210 are respectively used to connect to both ends of a floor assembly, thereby enabling the treatment head to rotate along the circumference of the fixed chamber 100 and the suspended chamber 200 with the floor assembly.

[0029] The fixed chamber 100 is provided with multiple connecting plates 120 for connecting to a base (e.g., a wall, not shown in the figure). The top of the fixed chamber 100 is provided with a connecting rod 150, and the two ends of the connecting rod 150 are fixedly connected to the building embedded plate, thereby keeping the fixed chamber 100 fixed.

[0030] like Figure 2 As shown, the guide support assembly is used in the rotating treatment chamber 300 of the proton therapy device. The rotating treatment chamber 300 also includes a rotating frame 310, a treatment head 320, and a floor assembly (not shown). The suspension chamber 200 is installed inside the rotating frame 310. The two ends of the floor assembly are slidably connected to the first floor guide rail 110 and the second floor guide rail 210, respectively. This slidable connection is achieved by clamping the floor assembly between the two floor guide rails and making frictional contact with them. The treatment head 320 passes through an opening in the floor assembly and is connected to the floor assembly. The rotating frame 310 is connected to the treatment head 320. During operation, the rotating frame 310 drives the treatment head 320 to rotate, and the treatment head 320 drives the floor assembly to rotate. The specific structure of the floor assembly and the connection relationship between the treatment head 320 and the floor assembly can be found in Chinese patent application CN114042261A, and will not be described in detail here.

[0031] During rotation, the bottom 130 of the fixed chamber 100 and the bottom 220 of the suspended chamber 200 must remain horizontal at all times. Since the fixed chamber 100 remains fixed, it is only necessary to level its bottom 130 during installation. After the bottom 220 of the suspended chamber 200 is adjusted to be horizontal during installation, it must also be connected to the fixed chamber 100 so that it remains horizontal during rotation. In other words, during rotation, the fixed chamber 100 and the suspended chamber 200 remain fixed, while the rotating frame 310 rotates relative to the suspended chamber 200.

[0032] In some embodiments, one of the fixed chamber 100 and the suspended chamber 200 is provided with a telescopic rod 140, and the other is provided with a mounting hole that mates with the telescopic rod 140. When the telescopic rod 140 extends, it inserts into the mounting hole, thereby fixing the fixed chamber 100 and the suspended chamber 200 together. When the telescopic rod 140 retracts, it leaves the mounting hole, thereby disengaging the fixed chamber 100 from the suspended chamber 200. Since the telescopic rod 140 needs to ensure the stability of the suspended chamber 200, its width and strength can be set according to actual conditions.

[0033] In some embodiments, the treatment head 320 can rotate ±180 degrees. For example, starting from the top of the rotating frame 310, counterclockwise rotation is considered positive, and the semi-circular area rotated counterclockwise from the top to the bottom of the rotating frame 310 can be called a positive half-turn. Clockwise rotation is considered negative, and the semi-circular area rotated clockwise from the top to the bottom of the rotating frame 310 can be called a negative half-turn. Since the treatment head 320 will disconnect all connections between the fixed chamber 100 and the suspended chamber 200 during rotation, if the telescopic rod 140 extends, the treatment head 320 may interfere with the telescopic rod 140. Therefore, two telescopic rods 140 can be installed on the fixed chamber 100, located in the positive half-circle and the negative half-circle respectively. When the treatment head 320 rotates in the positive half-circle, the telescopic rod 140 in the positive half-circle retracts, and the telescopic rod 140 in the negative half-circle extends and inserts into the mounting hole, thereby fixing the fixed chamber 100 and the suspension chamber 200. Since the treatment head 320 does not rotate in the negative half-circle, it will not interfere with the telescopic rod 140 in the negative half-circle. When the treatment head 320 rotates in the negative half-circle, the telescopic rod 140 in the negative half-circle retracts, and the telescopic rod 140 in the positive half-circle extends and inserts into the mounting hole, thereby fixing the fixed chamber 100 and the suspension chamber 200. Since the treatment head 320 does not rotate in the positive half-circle, it will not interfere with the telescopic rod 140 in the positive half-circle. In this way, during the 360-degree rotation, the suspension chamber 200 can be connected to the fixed chamber 100 through the telescopic rod 140, and the treatment head 320 will not interfere with the telescopic rod 140, ensuring that the treatment head 320 can rotate 360 ​​degrees.

[0034] like Figure 3 As shown, two mounting rails 311 are arranged circumferentially on the rotating frame 310, and the two mounting rails 311 are parallel to each other. Figure 4 As shown, a support wheel assembly 230 is provided radially outward at the bottom 220 of the suspension chamber 200. The support wheel assembly 230 rolls into contact with two mounting rails 311, thereby allowing the rotating frame 310 to support the suspension chamber 200 and rotate relative to it. Figure 5As shown, the support wheel assembly 230 includes a first shaft 231 fixed to the bottom 220 of the suspension chamber 200. Both ends of the first shaft 231 are provided with chain plates 232, which are movably connected to the first shaft 231 so that they can rotate around the first shaft 231. A second shaft 233 and a third shaft 234 are respectively provided on both sides of the chain plates 232. Both ends of the second shaft 233 are fixedly connected to the two chain plates 232, and both ends of the third shaft 234 are fixedly connected to the two chain plates 232. Support wheels 235 are provided at both ends of the second shaft 234 and both ends of the third shaft 234. The support wheels 235 roll into the mounting guide rail 311, so that the support wheels 235 can roll in the mounting guide rail 311. When the rotating frame 310 rotates, the curvature of the mounting guide rail 311 may change. When the curvature changes, the chain plate 232 can rotate around the first axis 231 according to the different curvatures, so that the support wheels 235 on the second axis 233 and the third axis 234 are always in the mounting guide rail 311. That is, the second axis 233 and the third axis 234 can adaptively adjust according to the curvature of the mounting guide rail 311, so that the support wheels 235 are always in the mounting guide rail 311, avoiding derailment.

[0035] Continue to refer to Figure 4 An axial support assembly 240 is also provided on the bottom 220 of the suspended chamber 200. For example... Figure 6 As shown, the axial support assembly 240 includes an axial guide wheel 241, a fixed plate 242, an adjusting head 243, and a crankshaft 244. The crankshaft 244 is mounted on the fixed plate 242 and threadedly connected to it. By rotating the crankshaft 244, it can move axially relative to the fixed plate 242. The axial guide wheel 241 and the adjusting head 243 are respectively mounted at both ends of the crankshaft 244. A first locking nut 245 is also provided on the crankshaft 244. When it is necessary to adjust the axial position of the axial guide wheel 241, the first locking nut 245 is loosened, and then the adjusting head 243 is rotated. The adjusting head 243 will drive the crankshaft 244 to rotate, thereby causing it to move axially relative to the fixed plate 242, thus changing the axial position of the axial guide wheel 241. When the adjustment is in place, the first locking nut 245 is tightened, locking the crankshaft 244 so that it cannot rotate, completing the adjustment. Figure 7 As shown, the axial guide wheel 241 is located between the two mounting rails 311. By adjusting the nut 243, the axial guide wheel 241 can be made to abut against the inner side of the two mounting rails 311, thereby restricting the axial movement of the suspension chamber 200.

[0036] Continue to refer to Figure 4 Multiple radial support components 250 are provided on the radially outer side of the arc portion of the suspended chamber 200. For example... Figure 8A and Figure 8BAs shown, the radial support assembly 250 includes an inner frame 251 and radial guide wheels 252 mounted inside the inner frame 251 via screws 253. The radial guide wheels 252 are sleeved on the outside of the screws 253 and can rotate relative to the screws 253 (the screws 253 act as a pivot). The screws 253 are threadedly connected to the inner frame 251. By rotating the screws 253, the axial position of the radial guide wheels 252 on the inner frame 251 can be adjusted. The inner frame 251 is provided with side plates 254, an upper end plate 255, and a lower end plate 256. The inner frame 251 is fixed to the side plates 254, the upper end plate 255, and the lower end plate 256 by multiple locking nuts 257, thereby locking the inner frame 251. The upper end plate 255 and the lower end plate 256 can be fixedly connected to the suspension chamber 200, thereby mounting the radial support assembly 250 on the suspension chamber 200. One end of the screw 253 can extend from the side plate 254, facilitating adjustment of the axial position of the radial guide wheel 252. By adjusting the axial position of the radial guide wheel 252, it can be rolled into the mounting guide rail 311. Figure 9 As shown, after adjustment, the radial guide wheel 252 can roll in the mounting rail 311, thereby allowing the rotating frame 310 to rotate relative to the suspension chamber 200.

[0037] Continue to refer to Figure 4 An angle sensor (not shown in the figure) can also be installed on the suspension chamber 200 to monitor the angle between the bottom 220 of the suspension chamber 200 and the ground (i.e., the horizontal plane). When the angle is greater than a preset angle (e.g., 0.1 degrees), a signal is sent to the control device (not shown in the figure). After receiving the signal, the control device triggers an alarm and stops the rotating frame 310 from rotating, so as to prevent the bottom 220 of the suspension chamber 200 from tilting and causing the floor assembly to twist, which would prevent it from operating normally and thus affect the operation of the entire proton therapy device.

[0038] The center of the fixed chamber 100 is coaxial with the rotation center of the rotating frame 310, and the center of the suspended chamber 200 is the same as the rotation center of the rotating frame 310. During installation, the fixed chamber 100 can be aligned to make it coaxial with the rotation center of the rotating frame 100 and the bottom 130 horizontal. Then, it is fixed to the base through the connecting plate 120 to ensure the stability of the fixed chamber 100.

[0039] In this embodiment of the invention, the guide support assembly connects the suspension chamber 200 to the fixed chamber 100, keeping its bottom level to provide support and guidance for the floor assembly, enabling the floor assembly to rotate 360 ​​degrees. The fixed chamber 100 and the suspension chamber 200 are connected by a telescopic rod 140 that is a different half-turn from the treatment head 320, ensuring that the treatment head 320 can smoothly complete its 360-degree rotation. A tilt sensor monitors the levelness of the bottom 220 of the suspension chamber 200; when the tilt angle of the bottom 220 exceeds a preset value, an alarm is triggered and the rotating frame 310 stops rotating, preventing any impact on the normal operation of the proton therapy device.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Various variations can be made to the above embodiments of the present invention. That is, all simple and equivalent changes and modifications made based on the claims and description of this invention fall within the protection scope of the claims of this patent. All aspects not described in detail in this invention are conventional technical content.

Claims

1. A guide support assembly for a rotating floor, characterized in that, The system includes a fixed chamber and a suspended chamber arranged parallel to each other along the axial direction. The fixed chamber is provided with a first floor guide rail along the circumferential direction, and the suspended chamber is provided with a second floor guide rail along the circumferential direction. The first floor guide rail and the second floor guide rail are respectively configured to be slidably connected to both ends of a floor assembly. The suspended chamber is fixedly connected to the fixed chamber. The suspended chamber is mounted on two mounting guide rails on a rotating frame, and the mounting guide rails are arranged circumferentially. A support wheel assembly is provided on the bottom of the suspension chamber. The support wheel assembly includes a first shaft fixed to the bottom of the suspension chamber. Both ends of the first shaft are provided with chain plates, which are movably connected to the first shaft. A second shaft and a third shaft are provided on both sides of the chain plates. Both ends of the second shaft are fixedly connected to the two chain plates, and both ends of the third shaft are fixedly connected to the two chain plates. Support wheels are provided at both ends of the second shaft and both ends of the third shaft. The support wheel rolls into the mounting rail and can roll within the mounting rail.

2. The guide support assembly for the rotating floor according to claim 1, characterized in that, The fixed chamber is provided with multiple connecting plates for fixed connection to the base.

3. The guide support assembly for the rotating floor according to claim 1, characterized in that, The fixed chamber is provided with at least one telescopic rod, and the suspended chamber is provided with a mounting hole that cooperates with the telescopic rod. The telescopic rod is inserted into the mounting hole to fix the fixed chamber and the suspended chamber in place.

4. The guide support assembly for the rotating floor according to claim 3, characterized in that, There are two telescopic rods, located in the positive half-circle and the negative half-circle respectively. When the treatment head rotates in the positive half-circle, the telescopic rod located in the positive half-circle retracts, and the telescopic rod located in the negative half-circle extends and is fixedly connected to the suspension chamber. When the treatment head rotates in the negative half-circle, the telescopic rod located in the negative half-circle retracts, and the telescopic rod located in the positive half-circle extends and is fixedly connected to the suspension chamber.

5. The guide support assembly for the rotating floor according to claim 1, characterized in that, The suspension chamber is provided with an axial support assembly, which includes an axial guide wheel, a fixed plate, an adjusting head, and a crankshaft. The crankshaft is threadedly connected to the fixed plate. The axial guide wheel and the adjusting head are respectively installed at both ends of the crankshaft. A first locking nut is also provided on the crankshaft.

6. The guide support assembly for the rotating floor according to claim 1, characterized in that, The suspension chamber is provided with a radial support assembly, which includes an inner frame, radial guide wheels and a screw. The radial guide wheels are installed in the inner frame through the screw, and the screw is threadedly connected to the inner frame so that the axial position of the radial guide wheels can be adjusted by rotating the screw.

7. The guide support assembly for the rotating floor according to claim 1, characterized in that, The bottom of the suspension chamber is equipped with an angle sensor to monitor the angle between the bottom of the suspension chamber and the horizontal plane.

8. A rotating treatment chamber of a proton therapy device, characterized in that, The device includes a rotating gantry, a treatment head, a floor assembly, and a guide support assembly as described in any one of claims 1-7, wherein a suspension chamber of the guide support assembly is mounted inside the rotating gantry, the treatment head passes through an opening in the floor assembly and is connected to the floor assembly, the rotating gantry is connected to the treatment head, and the fixing chamber is fixed to a base.

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