CN109481854B

CN109481854B - Tumor radiotherapy rack

Info

Publication number: CN109481854B
Application number: CN201811592703.2A
Authority: CN
Inventors: 杨峥
Original assignee: Nanyang City Center Hospital
Current assignee: Nanyang City Center Hospital
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-11-03
Anticipated expiration: 2038-12-25
Also published as: CN109481854A

Abstract

The tumor radiotherapy frame comprises a base, a concave supporting table capable of vertically sliding is arranged above the base, a bottom plate capable of vertically sliding is arranged in the supporting table, two groups of buffer devices are arranged below the bottom plate and comprise fixed rods fixed below the bottom plate, guide blocks horizontally sliding along the fixed rods are respectively arranged at the left end and the right end of each fixed rod, a first connecting rod is respectively hinged on each guide block, the two first connecting rods are commonly hinged on the bottom plate, a tension spring is connected between the two guide blocks, and the two ends of the tension spring are respectively fixedly connected with the guide blocks at the same side; the adjustable bed is characterized in that a plurality of height-adjustable supporting legs are fixed at the lower end of the bottom plate, a bed plate capable of sliding transversely is arranged in the supporting plate, the upper end of the bed plate penetrates through the supporting plate and is arranged above the supporting plate, a plurality of clamping plates capable of sliding horizontally are arranged on the inner side of the bed plate, and the clamping plates horizontally slide to form a structure for fixing a human body.

Description

Tumor radiotherapy rack

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tumor radiotherapy rack.

Background

Tumor radiotherapy is a local treatment method for treating tumor by utilizing radioactive rays, including alpha, beta and gamma rays generated by radioactive isotopes, and chi rays, electron beams, proton beams and other particle beams generated by various X-ray treatment machines or accelerators. About 70% of cancer patients require radiation therapy in the course of cancer treatment, and about 40% of cancers can be cured by radiation therapy. The role and position of radiotherapy in tumor treatment are increasingly prominent, and the radiotherapy has become one of the main means for treating malignant tumors.

Radiation therapy has been in the history for decades, but has progressed faster. With the help of the development of the CT imaging technology and the computer technology, the current radiotherapy technology is developed from two-dimensional radiotherapy to three-dimensional radiotherapy and four-dimensional treatment technology, the radiotherapy dose distribution is also developed from point dose to volume dose distribution, and the dose intensity adjustment in the volume dose distribution is realized.

The head tumor radiotherapy device with the application number of 201611001664.5 is technically characterized in that: comprises a fixed base 1, a bedstead, a chute, a bed board, a radiotherapy device and a control panel, wherein a support column is arranged above the fixed base, the bedstead is arranged above the support column, a power switch is arranged on the upper surface of the bedstead, a power indicator lamp is arranged on the right side of the power switch, the chute is arranged at the center of the front surface of the bedstead, the bed board is arranged above the chute, a support rod is arranged above the bed board, a detection head is arranged above the support rod, the radiotherapy device is arranged on the left side of the base 1, a radiotherapy port is arranged at the center of the inner part of the radiotherapy device, a voice player is arranged on the left side of the front surface of the radiotherapy device, the control panel is arranged below the voice player, a control button is arranged on the surface of the control panel, a left rotating rod is arranged inside, and the left side of the right rotating rod is provided with a right radiotherapy device.

It has the following disadvantages: 1) the position of the bed board is adjusted by adopting a control key on a control panel, at the moment, equipment such as electrical components, motors and the like must be adopted, and the equipment has the problems of high price, difficult maintenance, higher equipment maintenance cost and the like, and is not suitable for popularization in hospitals; 2) patients who need tumor radiotherapy generally have poor physical quality, lie down on a hard bed board, have large fluctuation in mood, have poor mood, and are not beneficial to treatment and rehabilitation of the patients; 3) the part of the patient needing radiotherapy is different, special radiotherapy needs to be carried out aiming at the tumor part, and the position can be preferably positioned on a point, so that the radiotherapy effect is more obvious; 4) the radiotherapy time is long, and the patient needs to keep the same state for a long time, and needs to be well fixed on the bed plate, so that the patient can keep the posture for a long time.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the tumor radiotherapy frame, which effectively solves the problems that the existing tumor radiotherapy equipment is high in cost and inconvenient to maintain and cannot well meet the clinical requirements.

In order to achieve the purpose, the invention comprises a base, a concave supporting table capable of vertically sliding is arranged above the base, a bottom plate capable of vertically sliding is arranged in the supporting table, two groups of buffer devices are arranged below the bottom plate, each buffer device comprises a fixed rod fixed below the bottom plate, guide blocks capable of horizontally sliding along the fixed rods are respectively arranged at the left end and the right end of each fixed rod, each guide block is respectively hinged with a first connecting rod, the two first connecting rods are commonly hinged on the bottom plate, a tension spring is connected between the two guide blocks, and the two ends of each tension spring are respectively fixedly connected with the guide blocks at the same side;

a plurality of height-adjustable supporting legs are fixed at the lower end of the bottom plate, each supporting leg comprises a fixed column fixedly connected with the bottom plate, a first threaded rod is rotatably arranged in each fixed column, the lower end of each first threaded rod penetrates through each fixed column and is in threaded connection with a sliding column capable of vertically sliding, a first gear fixedly connected with the first threaded rod is arranged above each sliding column, a rack fixedly connected with the supporting table is meshed outside each first gear, a supporting plate is arranged above the bottom plate, the right side of each supporting plate is hinged and fixed with the bottom plate, a sliding block capable of vertically sliding is arranged on the left side of each supporting plate, and each sliding block is horizontally and;

the bed board capable of sliding transversely is arranged in the supporting plate, the upper end of the bed board penetrates through the supporting plate and is arranged above the supporting plate, a plurality of clamping plates capable of sliding horizontally are arranged on the inner side of the bed board, and the clamping plates slide horizontally to form a structure for fixing a human body.

Preferably, the supporting leg includes the vertical deflector with bottom plate fixed connection, is equipped with vertical logical groove on the deflector, but leads to inslot vertical gliding and be equipped with the stopper, and spacing hole runs through deflector and sliding column fixed connection.

Preferably, the lower end of the sliding column is coated with a rubber layer.

Preferably, be equipped with two sets of horizontal rectangular channels in the brace table, every rectangular channel is interior can rolling be equipped with the gyro wheel, and the top of every gyro wheel is fixed with the reinforcing plate, the both ends and the reinforcing plate fixed connection of dead lever, and the lower extreme of every reinforcing plate is equipped with the layer board, the rotatable connection of layer board and gyro wheel.

Preferably, the bottom plate top is equipped with rotatable horizontal axis of rotation, axis of rotation front end and rear end are equipped with a set of screw thread respectively and revolve to opposite screw thread, axis of rotation front end and rear end threaded connection have a set of relative motion's rectangular block respectively, every rectangular block upper end articulates there is the second connecting rod, second connecting rod and sliding block fixed connection on two rectangular blocks of relative motion, the backup pad lower extreme is fixed with two connecting plates, be equipped with the horizontally spout on the connecting plate, slidable is equipped with the round pin axle in the spout, the outer end of round pin axle runs through the connecting plate and is fixed with the shelves head, the interior terminal surface of shelves head contacts with the connecting plate.

Preferably, the upper end of the bottom plate is provided with a fixed guide rod, and the guide rod can slidably penetrate through the rectangular block.

Preferably, the bottom plate is fixed with two supporting blocks, two ends of the rotating shaft are rotatably fixed in the supporting blocks respectively, one end of the rotating shaft is provided with a prismatic groove, and a crank is slidably arranged in the groove.

Preferably, be equipped with rotatable horizontal second threaded rod in the backup pad, bed board and second threaded rod threaded connection, the left and right sides of backup pad is equipped with a horizontal direction spout respectively, and slidable is equipped with the direction slider in the direction spout, and the direction slider runs through direction spout and bed board fixed connection.

Preferably, rotatable connection third threaded rod in every grip block outer end, the bed board is arranged in with bed board threaded connection and the outer end of third threaded rod in, is equipped with a plurality of horizontally blind holes on the bed board, and slidable is equipped with the direction cylinder in the blind hole, and the direction cylinder runs through blind hole and grip block fixed connection.

Preferably, an arc chest protection cover is fixed at the upper end of the bed board.

Preferably, the front side of the upper end of the bed board is provided with a plurality of binding bands.

The invention has novel structure, ingenious conception, simple and convenient operation and low maintenance cost, can well meet the requirements of clinical tumor radiotherapy and has good popularization prospect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a structure of the bottom plate for vertical sliding buffer according to the present invention.

FIG. 3 is a schematic view of the locked structure of the base plate of the present invention, which slides laterally.

FIG. 4 is a schematic view of a support leg structure of the present invention.

Fig. 5 is a partially cut-away view of the fixing post according to the present invention.

FIG. 6 is a schematic view of a swing structure of the supporting plate according to the present invention.

FIG. 7 is a schematic view of the side structure of the swing shaft of the supporting plate according to the present invention.

Fig. 8 is a schematic structural view of fig. 6 with the bed plate removed.

FIG. 9 is a schematic view of the sliding block of the present invention being configured to slide vertically.

Fig. 10 is a schematic view of the structure of the supporting plate and the bed board of the invention.

Fig. 11 is a schematic view of the bed plate structure of the present invention.

FIG. 12 is a schematic view of the horizontal sliding structure of the clamping plate of the present invention.

Fig. 13 is a schematic view of the structure of the bed plate of the present invention for performing the lateral sliding.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 13.

As shown in figures 1-13, the invention comprises a base 1, the base 1 is a box-shaped table, the base 1 plays a role of supporting and fixing the whole equipment, a concave supporting table 2 capable of vertically sliding is arranged above the base 1, an electric push rod can be arranged in the base 1, the supporting table 2 is pushed to vertically slide by the movement of the electric push rod, the height of a bed plate 15 is adjusted by the vertical lifting of the supporting table 2, a bottom plate 3 capable of vertically sliding is arranged in the supporting table 2, the bottom plate 3 can vertically slide and transversely move, two groups of buffer devices are arranged below the bottom plate 3, the two groups of buffer devices are distributed at the front end and the rear end of the bottom plate 3, the buffer devices comprise a fixed rod 4 fixed below the bottom plate 3, a guide block 5 horizontally sliding along the fixed rod 4 is respectively arranged at the left end and the right end of the fixed rod 4, and the two fixed, each guide block 5 is respectively hinged with a first connecting rod 6, the two first connecting rods 6 are hinged on the bottom plate 3 together, the two first connecting rods 6 are hinged on one point together, so the motion of the two guide blocks 5 is opposite, after a patient lies on the bed plate 15, under the action of the self gravity of the patient, the two guide blocks 5 move away from each other, the guide blocks 5 move towards the outside to enable the bottom plate 3 to move downwards, so that the patient moves downwards, and a buffering effect is provided for the patient, the first guide block can avoid the injury to the patient, the second guide block can reduce the fear of the patient, the mood of the patient is improved, so the treatment effect is improved, the tension spring 7 is connected between the two guide blocks 5, two ends of the tension spring 7 are fixedly connected with the guide blocks 5 on the same side respectively, the tension spring 7 is continuously stretched, when the tension of the tension spring 7 is balanced with the self gravity of the patient, finishing buffering;

a plurality of height-adjustable supporting legs are fixed at the lower end of the bottom plate 3, each supporting leg comprises a fixed column 8 fixedly connected with the bottom plate 3, a first threaded rod 9 is rotatably arranged in each fixed column 8, an annular ring groove is arranged in each supporting column, an annular body is slidably arranged in each annular ring groove, each annular body penetrates through each annular groove and is fixedly connected with the corresponding first threaded rod 9, the lower end of each first threaded rod 9 penetrates through each fixed column 8 and is in threaded connection with a sliding column 10 capable of vertically sliding, an external thread is arranged on the outer side of each first threaded rod 9, an internal thread is arranged on the inner side of each sliding column 10, the external thread and the internal thread are matched to form a structure in which the corresponding first threaded rod 9 is in threaded connection with the corresponding sliding column 10, the threaded connection has self-locking performance, so that the stability of the supporting leg after adjustment can be well guaranteed, a, the height of the rack 12 is greater than the thickness of the first gear 11, in the process that the bottom plate 3 transversely slides, under the limiting action of the rack 12, the first gear 11 rotates in the sliding process, the first gear 11 rotates to drive the first threaded rod 9 to rotate, the first threaded rod 9 rotates to drive the sliding column 10 to vertically descend, the sliding column 10 descends to the support platform 2 to be in extrusion contact, and under the action of friction force, the bottom plate 3 is fixed in the support platform 2;

a supporting plate 13 is arranged above the bottom plate 3, the supporting plate 13 is a horizontal plate, the right side of the supporting plate 13 is hinged and fixed with the bottom plate 3, two positions are arranged at the hinged positions of the supporting plate 13 and the bottom plate 3, and the two positions are positioned on the same horizontal line, so that the hinged effect is more obvious, a sliding block 14 which can slide vertically is arranged at the left side of the supporting plate 13, the sliding block 14 is connected with the supporting plate 13 in a horizontal sliding manner, when the sliding block 14 slides vertically, the supporting plate 13 rotates around the hinged position of the supporting plate 13 and the bottom plate 3, the included angle between the supporting plate 13 and the horizontal plane can be well adjusted, so that the bed plate 15 is positioned at the most proper position, the position of a patient needing radiotherapy is just opposite to the radiotherapy apparatus, and the;

but be equipped with lateral sliding's bed board 15 in the backup pad 13, lateral sliding through bed board 15, thereby make the patient be in the most suitable position on the horizontal position, the top of backup pad 13 is arranged in to bed board 15 upper end through backup pad 13, bed board 15 inboard is equipped with a plurality of horizontal sliding's

grip block

16, 16 horizontal sliding of grip block constitutes the structure fixed with the human body, it is fixed to extrude other lieing in with the human body through grip block 16, can be equipped with the buffer layer respectively in every grip block 16's inboard, if cloth, rubber etc., can increase patient's travelling comfort like this.

The supporting leg still includes the vertical deflector 17 with bottom plate 3 fixed connection, is equipped with vertical logical groove 18 on the deflector 17, but the inslot of logical groove 18 vertical gliding is equipped with stopper 19, and spacing hole runs through deflector 17 and slip post 10 fixed connection, and under stopper 19's effect, slip post 10 can only carry out vertical slip.

The lower end of the sliding column 10 is covered with a rubber layer 20, and the rubber layer 20 is in extrusion contact with the support platform 2, so that the rubber layer 20 can have a certain buffer force. And the rubber layer 20 has a large friction force after being pressed against the support table 2.

Two groups of transverse rectangular grooves 21 are arranged in the supporting table 2, rollers 22 are arranged in each rectangular groove 21 in a rolling mode, when the bottom plate 3 is pushed to slide transversely, the rollers 22 roll in the rectangular grooves 21, and sliding friction is converted into rolling friction. Frictional resistance greatly reduced, every gyro wheel 22's top is fixed with reinforcing plate 23, the both ends and reinforcing plate 23 fixed connection of dead lever 4, and the lower extreme of every reinforcing plate 23 is equipped with layer board 24, and layer board 24 and gyro wheel 22 rotatable be connected, dead lever 4 through reinforcing plate 23 and gyro wheel 22 fixed connection. The position of the first link 6 is locked by the two first links 6 being hinged together during the rolling of the roller 22.

A rotatable transverse rotating shaft 25 is arranged above the bottom plate 3, a group of threads with opposite thread turning directions is respectively arranged at the front end and the rear end of the rotating shaft 25, a group of rectangular blocks 26 moving relatively are respectively in threaded connection with the front end and the rear end of the rotating shaft 25, the number of the rectangular blocks 26 is totally four, a second connecting rod 27 is hinged at the upper end of each rectangular block 26, the second connecting rods 27 on the two rectangular blocks 26 moving relatively are fixedly connected with the sliding block 14, two connecting plates 28 are fixed at the lower end of the supporting plate 13, a horizontal sliding groove 29 is arranged on each connecting plate 28, a pin shaft 30 is slidably arranged in each sliding groove 29, the outer end of each pin shaft 30 penetrates through each connecting plate 28 and is fixedly provided with a stopper 31, the inner end face of each stopper 31 is in contact with each connecting plate 28, when the rotating shaft 25 rotates, the two rectangular blocks 26 moving relatively, threaded connection has the auto-lock nature to make after the slip sliding block 14 the position locked fixed, guaranteed backup pad 13 and rotated later stability, and then make bed board 15 remain stable, guarantee patient's safety.

The upper end of the bottom plate 3 is provided with a fixed guide rod 32, the guide rod 32 can slide to penetrate through the rectangular block 26, and under the action of the guide rod 32, the rectangular block 26 can only slide transversely along the guide rod 32.

Two supporting blocks 33 are fixed on the bottom plate 3, two ends of the rotating shaft 25 are rotatably fixed in the supporting blocks 33 respectively, one end of the rotating shaft 25 is provided with a prismatic groove, a crank is slidably arranged in the groove, the rotating shaft 25 is rotatably fixed through the supporting blocks 33, the outer end of the rotating shaft 25 does not exceed the supporting blocks 33, and unnecessary injury to an operator caused by the fact that the operator does not touch the rotating shaft 25 is avoided.

Be equipped with rotatable horizontal second threaded rod 34 in the backup pad 13, the tip of second screw thread also does not surpass backup pad 13, thereby can avoid the injury to operating personnel effectively, the 34 tip of second threaded rod is equipped with the edge groove of prism, the interpolation of edge groove is equipped with the crank, drive second threaded rod 34 through the crank and rotate, bed board 15 and the 34 threaded connection of second threaded rod, the rotation of second threaded rod 34 drives bed board 15 and carries out horizontal slip, the left and right sides of backup pad 13 is equipped with a horizontal direction spout respectively, slidable is equipped with direction slider 35 in the direction spout, direction slider 35 runs through direction spout and bed board 15 fixed connection, under the effect of direction slider 35 and direction spout, guarantee that bed board 15 can only carry out horizontal slip.

Rotatable connection third threaded rod 36 in 16 outer ends of every grip block, the bed board 15 is arranged in to third threaded rod 36 and bed board 15 threaded connection and the outer end of third threaded rod 36, the outer end leaf of third threaded rod 36 does not surpass bed board 15, operator's security has been guaranteed, the groove of prism also is equipped with on the same third threaded rod 36, rotate through crank drive third threaded rod 36, be equipped with a plurality of horizontally blind holes on the bed board 15, slidable is equipped with guide cylinder 37 in the blind hole, guide cylinder 37 runs through blind hole and grip block 16 fixed connection, under guide cylinder 37's effect, guarantee that grip block 16 can only carry out the horizontally slip.

An arc-shaped chest protection cover 38 is fixed at the upper end of the bed board 15, the chest of a patient is protected by the chest protection cover 38, the chest protection cover 38 is of a structure capable of transversely stretching, and the chest protection cover 38 horizontally stretches, so that the adjustment can be performed on different patients.

Bed board 15 upper end front side is equipped with a plurality of bandages 39, wherein the left side of bed board 15 is equipped with a box body, in the pivot in the fixed box body of one end of bandage 39, the cover is equipped with the button spring in the pivot, the one end and the pivot fixed connection of button spring, the other end and the box body fixed connection of button spring, thereby make bandage 39 when not using, can be fine with bandage 39 indentation box body in, the right side of bed board 15 is equipped with a fixed box, be provided with the structure in the similar to belt floodgate in the fixed box, bandage 39's head is similar to the belt, pass fixed box with bandage 39, can adjust bandage 39's fixed position, thereby can be according to the fixed position of patient's fat thin regulation bandage 39, guarantee patient's comfort level.

When the invention is used, a patient lies on the bed board 15, the bottom board 3 moves downwards under the action of the self gravity of the patient, thereby generating a buffering effect, avoiding secondary damage to the patient, relieving the tension of the patient, adjusting the mood of the patient and increasing the treatment effect, the patient is fixed on the bed board 15 through the binding belt 39 and the clamping board 16, so that the patient can keep the same posture for a long time, the bottom board 3 is pushed to move backwards, the supporting legs of the bottom board 3 are vertically adjusted in the movement process, the bottom board 3 is fixed in the supporting platform 2 to finish quick feeding, then the transverse sliding of the bed board 15 is finished through the rotation of the second threaded rod 34, thereby further finely adjusting, finishing the determination of the horizontal position of the patient, the included angle between the bed board 15 and the horizontal plane is changed through the rotation of the rotating shaft 25, thereby the position of the patient needing radiotherapy is right, the bed plate 15 is made to be in a vertical position by the vertical sliding of the support table 2.

Compared with the prior art, the invention has the following advantages: 1) after a patient lies on the bed plate 15, under the self gravity, the bed plate 15 can generate a buffering effect, so that the nervous emotion of the patient can be relieved, the mood of the patient can be adjusted, and the treatment effect can be improved; 2) the bottom plate 3 is pushed to slide transversely, and in the sliding process of the bottom plate 3, the supporting legs are gradually adjusted to fix the bottom plate 3 in the supporting table 2, so that the adjustment of the horizontal position of the bed plate 15 is quickly completed, and the adjustment is coarse adjustment; 3) the second threaded rod 34 rotates to drive the bed plate 15 to slide transversely, so that the position of the bed plate 15 is right suitable, and fine adjustment is realized; 4) the rotation of the rotating shaft 25 enables the included angle between the supporting plate 13 and the horizontal plane to be changed, so that the position of the patient needing treatment is right and proper; 5) the device is basically realized through mechanical parts, has low maintenance cost, only needs to be coated with lubricating oil after being used for a long time, and is suitable for popularization.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The tumor radiotherapy frame comprises a base (1) and is characterized in that a concave supporting table (2) capable of vertically sliding is arranged above the base (1), a bottom plate (3) capable of vertically sliding is arranged in the supporting table (2), two groups of buffer devices are arranged below the bottom plate (3), each buffer device comprises a fixed rod (4) fixed below the bottom plate (3), guide blocks (5) horizontally sliding along the fixed rods (4) are respectively arranged at the left end and the right end of each fixed rod (4), a first connecting rod (6) is respectively hinged on each guide block (5), the two first connecting rods (6) are jointly hinged on the bottom plate (3), a tension spring (7) is connected between the two guide blocks (5), and two ends of each tension spring (7) are respectively fixedly connected with the guide blocks (5) on the same side;

the height-adjustable support leg is fixed at the lower end of the bottom plate (3), the support leg comprises a fixing column (8) fixedly connected with the bottom plate (3), a first threaded rod (9) is rotatably arranged in the fixing column (8), the lower end of the first threaded rod (9) penetrates through the fixing column (8) and is in threaded connection with a sliding column (10) capable of vertically sliding, a first gear (11) fixedly connected with the first threaded rod (9) is arranged above the sliding column (10), a rack (12) fixedly connected with the support table (2) is meshed on the outer side of the first gear (11), a support plate (13) is arranged above the bottom plate (3), the right side of the support plate (13) is hinged and fixed with the bottom plate (3), a sliding block (14) capable of vertically sliding is arranged on the left side of the support plate (13), and the sliding block (14) is horizontally slidably connected with;

a bed board (15) capable of sliding transversely is arranged in the supporting plate (13), the upper end of the bed board (15) penetrates through the supporting plate (13) and is arranged above the supporting plate (13), a plurality of clamping plates (16) capable of sliding horizontally are arranged on the inner side of the bed board (15), and the clamping plates (16) slide horizontally to form a structure for fixing a human body.

2. Tumor radiotherapy rack according to claim 1, characterized in that the support legs comprise vertical guide plates (17) fixedly connected to the base plate (3), vertical through slots (18) are provided on the guide plates (17), limit blocks (19) are vertically slidably provided in the through slots (18), and limit holes penetrate through the guide plates (17) and are fixedly connected to the sliding columns (10).

3. Tumor radiotherapy stand according to claim 2, characterized in that the lower end of the sliding column (10) is coated with a rubber layer (20).

4. The tumor radiotherapy rack according to claim 1, wherein two sets of transverse rectangular grooves (21) are formed in the support platform (2), rollers (22) are rotatably arranged in each rectangular groove (21), a reinforcing plate (23) is fixed above each roller (22), two ends of the fixing rod (4) are fixedly connected with the reinforcing plates (23), a supporting plate (24) is arranged at the lower end of each reinforcing plate (23), and the supporting plate (24) is rotatably connected with the rollers (22).

5. The tumor radiotherapy rack according to claim 1, wherein a rotatable transverse rotating shaft (25) is arranged above the bottom plate (3), a set of threads with opposite thread directions is arranged at the front end and the rear end of the rotating shaft (25), a set of rectangular blocks (26) moving relatively is connected at the front end and the rear end of the rotating shaft (25) respectively, a second connecting rod (27) is hinged at the upper end of each rectangular block (26), the second connecting rods (27) on the two rectangular blocks (26) moving relatively are fixedly connected with the sliding block (14), two connecting plates (28) are fixed at the lower end of the supporting plate (13), a horizontal sliding groove (29) is arranged on each connecting plate (28), a pin shaft (30) is slidably arranged in each sliding groove (29), the outer end of each pin shaft (30) penetrates through each connecting plate (28) and is fixed with a stopper head (31), and the inner end face of each stopper head (31) is in contact with each connecting plate.

6. Tumor radiotherapy stand according to claim 5, characterized in that the upper end of the base plate (3) is provided with a fixed guide rod (32), the guide rod (32) being slidable through the rectangular block (26).

7. Tumor radiotherapy rack according to claim 5, characterized in that two support blocks (33) are fixed on the base plate (3), the two ends of the rotating shaft (25) are rotatably fixed in the support blocks (33), respectively, one end of the rotating shaft (25) is provided with a prismatic groove, and a crank is slidably arranged in the groove.

8. The tumor radiotherapy rack according to claim 1, wherein a rotatable transverse second threaded rod (34) is disposed in the support plate (13), the bed plate (15) is in threaded connection with the second threaded rod (34), a transverse guide sliding slot is disposed on each of the left and right sides of the support plate (13), a guide sliding block (35) is slidably disposed in the guide sliding slot, and the guide sliding block (35) penetrates through the guide sliding slot and is fixedly connected with the bed plate (15).

9. The tumor radiotherapy rack according to claim 1, wherein the outer end of each clamping plate (16) is rotatably connected with a third threaded rod (36), the third threaded rod (36) is in threaded connection with the bed plate (15), the outer end of the third threaded rod (36) is arranged in the bed plate (15), the bed plate (15) is provided with a plurality of horizontal blind holes, guide cylinders (37) are slidably arranged in the blind holes, and the guide cylinders (37) penetrate through the blind holes and are fixedly connected with the clamping plates (16).

10. Tumor radiotherapy stand according to claim 1, characterized in that an arc-shaped chest protection shield (38) is fixed to the upper end of the bed plate (15).