Two-direction rotating mechanism of treatment bed

Abstract

The utility model relates to a two-direction rotating mechanism of a treatment bed. The device comprises a bottom plate, a sliding assembly, a transmission assembly, a rotating assembly and an upper plate, the sliding assembly and the rotating assembly are arranged between the bottom plate and the upper plate, the sliding assembly is connected with the transmission assembly, and the sliding assembly comprises an inclined plane connecting piece, a first guide rail, a second guide rail, a special-shaped connecting piece, a self-aligning ball bearing, a first bearing seat, a bearing end cover, a locking nut and a third guide rail; the first guide rail is arranged on the bottom plate, the inclined plane connecting piece is arranged on the first guide rail, the second guide rail is arranged on the inclined plane of the inclined plane connecting piece, the special-shaped connecting piece is arranged on the second guide rail, the first bearing seat is arranged on the special-shaped connecting piece, a self-aligning ball bearing is arranged in the first bearing seat, and a bearing end cover is arranged above the first bearing seat. A third guide rail is arranged above the bearing end cover, and the upper plate is arranged on the third guide rail. Rotation of the treatment bed in two directions is achieved through one structure, a better treatment effect is achieved, the size is small, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the medical field, in particular to a two-direction rotating mechanism for a treatment bed. Background Art

[0002] The radiotherapy treatment bed is a multi-axis motion platform, whose main function is to accurately deliver the patient to the treatment position according to the requirements of the treatment plan. In order to meet different treatment needs, five-dimensional beds and even six-dimensional beds are gradually being used in radiotherapy equipment. At present, most radiotherapy treatment beds adopt a parallel structure arrangement, using a set of transmission structures to achieve movement in one direction. When there are many motion axes, this type of parallel arrangement will make the overall size of the equipment larger, the structure complex, and bring many problems such as complex wiring.

[0003] Therefore, it is necessary to provide a new technical solution to realize the rotation of the treatment bed and solve the problems of large size, complex structure and complex wiring of the treatment bed caused by the parallel layout. Utility Model Content

[0004] In order to solve the above-mentioned technical problems existing in the background technology, the utility model provides a two-way rotation mechanism for a treatment bed, which realizes the rotation of the treatment bed in two directions through a group of structures, obtains better treatment effects, and solves the problems of large size and complex structure brought about by the parallel structure.

[0005] The technical solution of the utility model is as follows: the utility model is a two-way rotating mechanism for a treatment bed, and the special feature is that the two-way rotating mechanism for the treatment bed comprises a bottom plate, a sliding assembly, a transmission assembly, a rotating assembly and an upper plate; the sliding assembly and the rotating assembly are arranged between the bottom plate and the upper plate, the sliding assembly is connected to the transmission assembly, the sliding assembly comprises an inclined surface connecting piece, a first guide rail, a second guide rail, a special-shaped connecting piece, a self-aligning ball bearing, a first bearing seat, a bearing end cover, a locking nut and a third guide rail; the first guide rail is arranged on the bottom plate, the inclined surface connecting piece is arranged on the first guide rail and can slide along the first guide rail, the second guide rail is arranged on the inclined surface of the inclined surface connecting piece, the special-shaped connecting piece is arranged on the second guide rail and can slide along the second guide rail, the first bearing seat is arranged on the special-shaped connecting piece, a self-aligning ball bearing is arranged in the first bearing seat, a bearing end cover is arranged above, the bearing end cover is connected to the first bearing seat through a locking nut, a third guide rail is arranged above the bearing end cover, and the upper plate is arranged on the third guide rail.

[0006] Furthermore, the transmission assembly includes a servo motor, a reducer, a coupling, a support seat, a first bearing, a screw, a second bearing, a second bearing seat and a screw nut. One end of the screw is connected to the second bearing, and the other end passes through the first bearing and is connected to the coupling. The coupling is connected to the servo motor through the reducer. The second bearing is arranged on the base plate through the second bearing seat. The first bearing is arranged on the base plate through the support seat. A screw nut is arranged on the screw, and the screw is connected to the inclined surface connector through the screw nut.

[0007] Furthermore, the rotating assembly includes four third bearing seats, four third bearings and a cross shaft. The four third bearing seats are respectively arranged at the front, rear, left and right four shaft ends of the cross shaft. The two third bearing seats arranged at the front and rear are connected to the upper plate, and the two third bearing seats arranged at the left and right are connected to the bottom plate. The four shaft ends of the cross shaft are respectively equipped with a third bearing, and the four shaft ends of the cross shaft are respectively connected to the four third bearing seats through the four third bearings.

[0008] Furthermore, the rotating assembly also includes four locking nuts, which are respectively assembled on the four shaft ends of the cross shaft to lock the third bearing to the cross shaft.

[0009] Furthermore, the rotating assembly also includes four bearing end covers, and a bearing end cover is arranged on each third bearing seat.

[0010] Furthermore, the two-way rotation mechanism of the treatment bed also includes a limit detection switch; the limit detection switch is arranged on the bottom plate to perform limit detection on the rotating component.

[0011] Furthermore, the sliding components are divided into two groups and are symmetrically arranged on both sides of the bottom plate.

[0012] Furthermore, the transmission components are divided into two groups, which are respectively arranged on the inner sides of the two groups of sliding components.

[0013] The core technical concept of the two-way rotating structure of the treatment bed used for radiotherapy equipment in the utility model is to use a mechanism to convert linear motion into rotational motion. The two-way rotating structure of the treatment bed is mainly composed of a base plate, a sliding component (two groups), a transmission component (two groups), a rotating component, a limit detection switch, and an upper plate. The transmission component structure is not limited to the transmission form shown in the figure, but can also be a belt drive, a gear rack drive, a chain drive, etc. The two-way rotating structure of the treatment bed can be rotated in two directions according to the treatment needs during radiotherapy, so as to adjust the posture of the patient's lesion, obtain better treatment effects, improve the treatment effect of the equipment, and achieve a more compact layout structure to reduce the size of the equipment. It ensures that the treatment bed can be rotated according to the treatment needs during treatment to obtain better treatment effects. It is beneficial to the treatment accuracy of the equipment and reduces the size of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the sliding assembly of the utility model;

[0016] Figure 3 It is a schematic diagram of the transmission assembly structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the rotating assembly of the utility model.

[0018] The following are the descriptions of the reference numerals:

[0019] 1. Bottom plate; 2. Sliding assembly; 3. Transmission assembly; 4. Rotating assembly; 5. Limit detection switch; 6. Upper plate;

[0020] 2.1, inclined connecting piece; 2.2, first guide rail; 2.3, second guide rail; 2.4, special-shaped connecting piece; 2.5, self-aligning ball bearing; 2.6, first bearing seat; 2.7, bearing end cover; 2.8, locking nut; 2.9, third guide rail;

[0021] 3.1, servo motor; 3.2, reducer; 3.3, coupling; 3.4, support seat; 3.5, first bearing; 3.6, lead screw; 3.7, second bearing; 3.8, second bearing seat; 3.9, lead screw nut;

[0022] 4.1. Third bearing seat; 4.2. Cross shaft; 4.3. Third bearing; 4.4. Locking nut; 4.5. Bearing end cover. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figure 1 The structure of a specific embodiment of the utility model includes a base plate 1, a sliding component 2, a transmission component 3, a rotating component 4 and an upper plate 6; the sliding component 2 and the rotating component 4 are arranged between the base plate 1 and the upper plate 6, and the sliding component 2 is connected to the transmission component 3. The utility model also includes a limit detection switch 5; the limit detection switch 5 is arranged on the base plate 1 to perform limit detection on the rotating component 4. In this embodiment, the sliding component 2 is divided into two groups, which are symmetrically arranged on both sides of the base plate 1, and the transmission component 3 is correspondingly divided into two groups, which are respectively arranged on the inner sides of the two groups of sliding components 2.

[0025] See also Figure 2The structure of the specific embodiment of the sliding assembly 2 of the utility model includes an inclined surface connecting member 2.1, a first guide rail 2.2, a second guide rail 2.3, a special-shaped connecting member 2.4, a self-aligning ball bearing 2.5, a first bearing seat 2.6, a bearing end cover 2.7, a locking nut 2.8 and a third guide rail 2.9; the first guide rail 2.2 is arranged on the bottom plate 1, the inclined surface connecting member 2.1 is arranged on the first guide rail 2.2 and can slide along the first guide rail 2.2, and the second guide rail 2.3 is arranged on the inclined surface connecting member On the inclined surface of the connecting piece 2.1, the special-shaped connecting piece 2.4 is arranged on the second guide rail 2.3 and can slide along the second guide rail 2.3. The first bearing seat 2.6 is arranged on the special-shaped connecting piece 2.4. A self-aligning ball bearing 2.5 is arranged in the first bearing seat 2.6, and a bearing end cover 2.7 is arranged above it. The bearing end cover 2.7 is connected to the first bearing seat 2.6 through a locking nut. A third guide rail 2.9 is arranged above the bearing end cover 2.7, and the upper plate 6 is arranged on the third guide rail 2.9.

[0026] See also Figure 3 The structure of the specific embodiment of the transmission assembly 3 of the utility model includes a servo motor 3.1, a reducer 3.2, a coupling 3.3, a support seat 3.4, a first bearing 3.5, a screw 3.6, a second bearing 3.7 and a second bearing seat 3.8. One end of the screw 3.6 is connected to the second bearing 3.7, and the other end passes through the first bearing 3.5 and is connected to the coupling 3.3. The coupling 3.3 is connected to the servo motor 3.1 through the reducer 3.2. The second bearing 3.7 is arranged on the base plate through the second bearing seat 3.8. The first bearing 3.5 is arranged on the base plate 1 through the support seat 3.4. A screw nut 3.9 is arranged on the screw 3.6, and the screw 3.6 is connected to the inclined connecting piece 2.1 through the screw nut 3.9.

[0027] See also Figure 4 The structure of the specific embodiment of the rotating component 4 of the utility model includes four third bearing seats 4.1, a cross shaft 4.2, four third bearings 4.3, four locking nuts 4.4 and four bearing end covers 4.5; the four third bearing seats 4.1 are respectively arranged at the front, rear, left and right four shaft ends of the cross shaft 4.2, the two third bearing seats 4.1 arranged at the front and rear are connected to the upper plate 6, the two third bearing seats 4.1 arranged at the left and right are connected to the bottom plate 1, the four shaft ends of the cross shaft 4.2 are respectively equipped with a third bearing 4.3, and the four locking nuts 4.3 are respectively assembled on the four shaft ends of the cross shaft 4.2 to lock the third bearing 4.3 to the cross shaft 4.2, and the four shaft ends of the cross shaft 4.2 are respectively connected to the four third bearing seats 4.1 through the four third bearings 4.3, and a bearing end cover 4.5 is arranged on each third bearing seat 4.1.

[0028] The two-way rotation mechanism of the treatment bed drives two sets of sliding assemblies 2 to move on the inclined plane through two sets of transmission assemblies 3 respectively, so as to realize rotation in two directions. The two sets of transmission assemblies 3 drive the two sets of sliding assemblies 2 to move forward or backward at the same time, so that the treatment bed can swing downward or upward; one set of transmission assemblies 3 drives one set of sliding assemblies 2 to move forward, and the other set of transmission assemblies 3 drives the other set of sliding assemblies 2 to move backward, so that the treatment bed can swing leftward or rightward.

[0029] When the utility model is working: two groups of transmission components 3 drive two groups of sliding components 2 to move respectively, and the two groups of sliding components 2 move at the same speed and in the same direction at the zero point, which will cause the rear end of the upper plate 6 to rise or fall at the same time, so that the cross shaft 4.2 in the rotating component 4 rotates around the two third bearing shaft seats 4.3 arranged on the left and right, and realizes the rotation around the X axis; the two groups of sliding components 2 move at the same speed and in opposite directions at the zero point, which will cause the upper plate 6 to swing to the left or right, so that the cross shaft 4.2 in the rotating component 4 rotates around the two third bearing shaft seats 4.3 arranged in front and back, and realizes the rotation around the Y axis. That is, the two groups of transmission components 3 drive the two groups of sliding components 2 to move forward or backward at the same time, so that the treatment bed can rotate around the X axis; one group of transmission components 3 drives one group of sliding components 2 to move forward, and the other group of transmission components 3 drives the other group of sliding components 2 to move backward, so that the treatment bed can rotate around the Y axis.

[0030] The content of the utility model and the technical content not specifically described in the above embodiments are the same as the prior art. The above are only specific implementation methods disclosed by the utility model, but the protection scope disclosed by the utility model is not limited thereto. The protection scope disclosed by the utility model shall be subject to the protection scope of the claims.

Claims

1. A two-way rotating mechanism for a treatment bed, characterized in that: The two-way rotation mechanism of the treatment bed includes a base plate, a sliding assembly, a transmission assembly, a rotating assembly and an upper plate; the sliding assembly and the rotating assembly are arranged between the base plate and the upper plate, the sliding assembly is connected to the transmission assembly, the sliding assembly includes an inclined surface connecting piece, a first guide rail, a second guide rail, a special-shaped connecting piece, a self-aligning ball bearing, a first bearing seat, a bearing end cover, a locking nut and a third guide rail; the first guide rail is arranged on the base plate, the inclined surface connecting piece is arranged on the first guide rail and can slide along the first guide rail, the second guide rail is arranged on the inclined surface of the inclined surface connecting piece, the special-shaped connecting piece is arranged on the second guide rail and can slide along the second guide rail, the first bearing seat is arranged on the special-shaped connecting piece, a self-aligning ball bearing is arranged in the first bearing seat, a bearing end cover is arranged above it, the bearing end cover is connected to the first bearing seat through a locking nut, a third guide rail is arranged above the bearing end cover, and the upper plate is arranged on the third guide rail.

2. The two-way rotating mechanism of the treatment bed according to claim 1, characterized in that: The transmission assembly includes a servo motor, a reducer, a coupling, a support seat, a first bearing, a lead screw, a second bearing, a second bearing seat and a lead screw nut. One end of the lead screw is connected to the second bearing, and the other end passes through the first bearing and is connected to the coupling. The coupling is connected to the servo motor through the reducer. The second bearing is arranged on the base plate through the second bearing seat. The first bearing is arranged on the base plate through the support seat. A lead screw nut is arranged on the lead screw, and the lead screw is connected to the inclined surface connector through the lead screw nut.

3. The two-way rotating mechanism of the treatment bed according to claim 2, characterized in that: The rotating assembly includes 4 third bearing seats, 4 third bearings and a cross shaft. The 4 third bearing seats are respectively arranged at the front, rear, left and right axial ends of the cross shaft. The two third bearing seats arranged at the front and rear are connected to the upper plate, and the two third bearing seats arranged at the left and right are connected to the bottom plate. The four axial ends of the cross shaft are respectively equipped with a third bearing, and the four axial ends of the cross shaft are respectively connected to the four third bearing seats through the four third bearings.

4. The two-way rotating mechanism of the treatment bed according to claim 3, characterized in that: The rotating assembly also includes four locking nuts, which are respectively assembled on the four shaft ends of the cross shaft to lock the third bearing onto the cross shaft.

5. The two-way rotating mechanism of the treatment bed according to claim 4, characterized in that: The rotating assembly also includes four bearing end covers, and one bearing end cover is arranged on each third bearing seat.

6. The two-way rotating mechanism of the treatment bed according to claim 3, characterized in that: The two-way rotation mechanism of the treatment bed also includes a limit detection switch; the limit detection switch is arranged on the bottom plate.

7. The two-way rotating mechanism for a treatment bed according to any one of claims 1 to 6, characterized in that: The sliding components are divided into two groups and are symmetrically arranged on both sides of the bottom plate.

8. The two-way rotating mechanism of the treatment bed according to claim 7, characterized in that: The transmission components are divided into two groups, which are respectively arranged inside the two groups of sliding components.

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