CN212368986U

CN212368986U - 3DDR machine

Info

Publication number: CN212368986U
Application number: CN202021974636.3U
Authority: CN
Inventors: 王国锋; 李振国
Original assignee: Bangsheng Hi Tech Special Vehicle Tianjin Co ltd
Current assignee: Bangsheng Hi Tech Special Vehicle Tianjin Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-01-19
Anticipated expiration: 2030-09-10

Abstract

The utility model discloses a 3DDR machine, which comprises a base and a column device, wherein the base is fixedly arranged on the ground, the column device is positioned at the upper end of the base, the 3DDR machine also comprises a rotating device, a rotating arm device, an X-ray imaging device, a buffer device and a tube ball device, the rotating device is positioned at the outer side of the column device, the rotating arm device and the X-ray imaging device are both positioned at the outer side of the rotating device, the buffer device is positioned at one end of the rotating arm device, and the tube ball device is positioned at the outer side of the buffer device, the beneficial effects of the utility model are that the X-ray imaging device is separated from the independent setting of the rotating arm device, the rotating angle of the X-ray imaging device is increased to minus 180 degrees to plus 180 degrees, the shooting range of the DR machine is enlarged, meanwhile, the use condition of the DR machine is more flexible, the buffer device is arranged between, the influence of rotation on the tube ball device is reduced, the relative position between the tube ball device and the rotary arm device is kept unchanged, and the operation is simple and convenient.

Description

3DDR machine

Technical Field

The utility model belongs to the technical field of the medical equipment technique and specifically relates to a 3DDR machine is related to.

Background

In the prior art, a Digital Radiography system mainly includes a column and a support arm for mounting a tube ball and a DR (Digital Radiography) detector, the support arm is divided into a UC arm and a U-shaped arm according to the shape, the UC arm is formed by connecting a U-shaped arm and a C-shaped arm, both ends of which are not on the same plane, and the U-shaped arm has only one section of U-shaped arm.

In the existing UC arm X-ray machine (namely the UC arm radiography DR machine), basically, a linear guide rail or a square steel guide rail is in an exposed structure, a control cabinet and a machine frame are in a separated design, and then a corrugated pipe is used for connecting wiring between the control cabinet and the machine frame. The design is more traditional in appearance, and the structure is loose and not compact. The exposed guide rail gives medical staff and patients an uncomfortable feeling in the visual sense and also creates a risk of scratching. The separated design of the control cabinet and the rack provides certain space requirements for rooms for installing equipment in hospitals, and is not beneficial to the installation and use of some small rooms. In addition, the lifting mechanism of the existing UC arm X-ray machine basically uses a single-wire rope plus ratchet protection mechanism, and the design is more traditional, and has some design defects. Such as easy breakage at the steel cord and the steel cord joint; the processing of the wheel disc for winding the steel wire rope is complex; winding the wire rope is troublesome during assembly; the processing, installation and debugging of the ratchet mechanism with the protection function are troublesome.

The application numbers are: 201820167615.7 discloses a UC arm radiography DR machine, which comprises a UC arm frame main body, a UC arm moving flat bed, wherein the UC arm moving flat bed is matched with the UC arm frame main body for placement, and the UC arm frame main body comprises a digital X-ray imaging device, a tube ball, an upright post, a pulley block, a UC arm rotating part sleeve, a UC arm component, a digital X-ray imaging device rotating part sleeve, and a tube ball back-and-forth moving part sleeve; a pulley block is arranged on the upright post, and a UC arm rotating part sleeve is fixed on the pulley block; UC arm rotation portion cover is connected UC arm member, the front end of UC arm member is equipped with digital X ray imaging equipment rotation portion cover, and digital X ray imaging equipment rotation portion sheathes fixed connection digital X ray imaging equipment, the rear end of UC arm member is equipped with tube ball back-and-forth movement portion cover, and fixed connection tube ball on the tube ball back-and-forth movement portion cover. However, the X-ray imaging equipment of the DR machine for shooting by the UC arm and the frame of the UC arm are integrally arranged, the rotation angle is-45 degrees to +45 degrees, the shooting range is small, the using condition is single, and the pipe ball device and the UC arm device are easy to wind during the movement process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a 3DDR machine.

In order to achieve the above object, the present invention provides a technical solution:

the utility model provides a 3DDR machine, includes base and stand device, the base sets firmly subaerial, the stand device is located the base upper end still includes rotary device, swivel arm device, X-ray image device, buffer and tube ball device, rotary device is located the stand device outside, the swivel arm device and X-ray image device all is located the rotary device outside, buffer is located swinging boom device one end, the tube ball device is located the buffer outside.

The upright post device comprises an upright post, a lifting mechanism and a pulley, wherein the upright post is hollow, the lifting mechanism comprises a chain wheel mounting rack, a worm, driving chain wheels, a lifting motor, a sliding block and a linear guide rail, the chain wheel mounting rack is arranged at the upper end inside the upright post and fixedly connected with the upright post, the worm penetrates through the chain wheel mounting rack and is rotatably connected with the chain wheel mounting rack, the number of the driving chain wheels is two, the two driving chain wheels are arranged at two ends of the worm side by side and are fixedly connected with the worm, the lifting motor is arranged at the lower end of the chain wheel mounting rack and is fixedly connected with the chain wheel mounting rack, the output end of the lifting motor is provided with a turbine which is meshed with the worm, the driving chain wheels are connected with a sliding block chain, the linear guide rail is arranged inside the, the pulley is installed on the linear guide rail through a sliding block.

The rotary device comprises a transmission bearing, a bearing installation block, a transmission gear, a gear installation block, a rotary motor and a rotary speed reducer, wherein the transmission bearing is arranged outside the pulley and fixedly connected with the pulley, the bearing installation block is arranged on one side of the transmission bearing and fixedly connected with the transmission bearing, the transmission gear is arranged outside the transmission bearing and fixedly connected with the transmission bearing, the gear installation block corresponds to the bearing installation block, the transmission gear is arranged on one side of the transmission gear and fixedly connected with the transmission gear, the rotary motor is arranged inside the rotary arm device and fixedly connected with the rotary arm device, the output end of the rotary motor is connected with the rotary speed reducer, and the output end of the rotary speed reducer penetrates through the rotary arm device and is meshed with the transmission gear.

The rotating arm device comprises an X-ray imaging part and a tube ball part, the X-ray imaging part is provided with a rotating rod through hole, a rotating motor and a rotating speed reducer are located in the X-ray imaging part, and the X-ray imaging part is located on the other side of the bearing installation block and is fixedly connected with the bearing installation block.

X-ray imaging device includes driving motor, drive speed reducer, drive dwang, X-ray imaging equipment and handle, driving motor sets up inboard and with coaster fixed connection at the coaster, driving motor's output termination drive speed reducer, the one end of drive dwang is equipped with the gear, the one end that the drive dwang is equipped with the gear run through dwang through-hole and coaster with the output meshing of drive speed reducer is connected, be equipped with the bearing between drive dwang and the coaster, X-ray imaging equipment sets up the drive dwang other end and with drive dwang fixed connection, the handle has two, two the handle sets up side by side X-ray imaging equipment one side and with X-ray imaging equipment fixed connection, X-ray imaging device's rotation angle is-180 to + 180.

The buffer device comprises a buffer installation block, a buffer core rod, a buffer bearing group, a buffer gear, a buffer reset mechanism, a buffer sleeve and a buffer installation frame, wherein the buffer installation block is arranged at the end part of the tube ball and fixedly connected with the tube ball, a core rod through hole is arranged in the middle of the buffer installation block, one end of the buffer core rod penetrates through the core rod through hole and is rotatably connected with the buffer installation block, the buffer bearing group comprises two buffer bearings and bearing supports, the two buffer bearings are respectively arranged at the two ends of the buffer core rod and fixedly connected with the buffer core rod, the bearing supports are arranged between the buffer bearings and the buffer core rod, the buffer gear is arranged outside the buffer bearing adjacent to the buffer installation block and is fixedly connected with the buffer bearing, and the buffer reset mechanism is arranged at one side of the buffer gear, buffering sleeve sets up and is keeping away from buffering bearing outside of buffering installation piece and rather than fixed connection, buffering sleeve's one end with buffering gear fixed connection, the setting of buffering mounting bracket is in the buffering sleeve other end and with buffering sleeve fixed connection.

Buffering canceling release mechanical system is including the connecting rod that resets, the rack that resets, reset spring and connecting rod stopper, the connecting rod that resets corresponds buffering gear setting is in buffering installation piece one side just the one end of connecting rod that resets with buffering installation piece rotates to be connected, the rack that resets corresponds buffering gear setting is in reset connecting rod one side and with reset connecting rod fixed connection, the rack that resets with buffering gear engagement connects, reset spring corresponds the connecting rod that resets sets up buffering installation piece lower part and its one end with buffering installation piece articulates, the reset spring other end with the connecting rod that resets articulates, the connecting rod stopper sets up buffering installation piece one side lower part and with buffering installation piece fixed connection.

The tube ball device comprises a tube ball mounting frame and a tube ball, wherein the tube ball mounting frame is arranged outside the buffer mounting frame and fixedly connected with the buffer mounting frame, and the tube ball is arranged inside the tube ball mounting frame and fixedly connected with the tube ball mounting frame and the buffer mounting frame.

Still include the display screen, the display screen setting in tube ball mounting bracket one side and with tube ball mounting bracket fixed connection, the display screen outside is equipped with the protection frame, the protection frame with display screen fixed connection.

Still include electrically controlled device, electrically controlled device set up in tube ball mounting bracket one side and with tube ball mounting bracket fixed connection, electrically controlled device and the equal electric connection of hoisting motor, rotating electrical machines, rotatory speed reducer, driving motor, drive speed reducer, X-ray imaging equipment, tube ball and display screen.

The utility model has the advantages that:

the X-ray imaging device is separated from the rotary arm device and is independently arranged, the rotation angle of the X-ray imaging device is increased to minus 180 degrees to plus 180 degrees, the shooting range of the DR machine is enlarged, meanwhile, the use condition of the DR machine is more flexible, a buffer device is arranged between the tube ball device and the rotary arm device, the influence of rotation on the tube ball device is reduced, the relative position between the tube ball device and the rotary arm device is kept unchanged, the thread winding condition cannot occur, and the operation is simple and convenient.

Drawings

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

fig. 2 is a schematic structural view of the lifting mechanism of the present invention;

FIG. 3 is a schematic view of the column and linear guide rail of the present invention;

FIG. 4 is a schematic view of the pulley in cooperation with the transmission bearing, the bearing mounting block, the transmission gear and the gear mounting block;

fig. 5 is a schematic view of the rotary machine and the rotary speed reducer in cooperation with the rotary arm device of the present invention;

FIG. 6 is a schematic view of the structure of the rotary arm device of the present invention;

FIG. 7 is a schematic structural diagram of the X-ray imaging apparatus of the present invention;

fig. 8 is a schematic structural view of the buffering device of the present invention;

fig. 9 is a schematic structural view of the buffer reset mechanism of the present invention;

fig. 10 is an electrical connection diagram of the present invention.

In the figure: 1. a base; 2. a column device; 3. a rotating device; 4. a rotating arm device; 5. an X-ray imaging device; 6. a buffer device; 7. a tube and ball device; 8. a column; 9. a pulley; 10. a sprocket mounting bracket; 11. a worm; 12. a drive sprocket; 13. a hoisting motor; 14. a slider; 15. a linear guide rail; 16. a drive bearing; 17. a bearing mounting block; 18. a transmission gear; 19. a gear mounting block; 20. a rotating electric machine; 21. a rotary speed reducer; 22. an X-ray imaging section; 23. a bulb portion; 24. a through hole of the rotating rod; 25. a drive motor; 26. driving a speed reducer; 27. driving the rotating rod; 28. an X-ray imaging device; 29. a handle; 30. a buffer mounting block; 31. buffering the core rod; 32. a buffer gear; 33. a buffer sleeve; 34. a buffer mounting bracket; 35. a buffer bearing; 36. a bearing support; 37. a reset connecting rod; 38. resetting the rack; 39. a return spring; 40. a connecting rod limiting block; 41. a tube ball mounting rack; 42. a tube ball; 43. a display screen; 44. a protective frame; 45. an electric control device.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings,

the utility model provides a 3DDR machine, includes base and stand device, and the base sets firmly subaerial, and stand device is located the base upper end, still includes rotary device, swivel arm device, X-ray image device, buffer and tube ball device, and rotary device is located the stand device outside, and swivel arm device and X-ray image device all are located the rotary device outside, and buffer is located swivel arm device one end, and the tube ball device is located the buffer outside, the utility model discloses overall structure schematic diagram is shown in FIG. 1.

The upright post device comprises an upright post, a lifting mechanism and a pulley, the upright post device is hollow, the lifting mechanism comprises a chain wheel mounting rack, a worm, two driving chain wheels, a lifting motor, a slide block and a linear guide rail, the chain wheel mounting rack is arranged at the upper end inside the upright post and is fixedly connected with the upright post, the worm penetrates through the chain wheel mounting rack and is rotatably connected with the chain wheel mounting rack, the two driving chain wheels are arranged at two ends of the worm side by side and are fixedly connected with the worm, the lifting motor is arranged at the lower end of the chain wheel mounting rack and is fixedly connected with the chain wheel mounting rack, the output end of the lifting motor is provided with a turbine, the turbine is meshed with the worm and is connected with the worm, the lifting mechanism of the utility model is structurally as shown in figure 2, the driving chain wheels are connected with a, but guide pulley and linear guide cooperation relative slip, hoist mechanism can drive the slider through promoting the motor and move on linear guide to drive coaster, swivel arm device, X-ray image device and bulb device and carry out the up-and-down motion, the utility model discloses stand and linear guide cooperation schematic diagram are shown in fig. 3.

The utility model discloses a tackle and transmission bearing, bearing installation piece, drive gear and gear installation piece cooperation sketch map are shown in figure 4, the rotating electrical machine is arranged in the swivel arm device and is fixedly connected with the swivel arm device, the output end of the rotating electrical machine connects with the rotating speed reducer, the output end of the rotating speed reducer runs through the swivel arm device and is meshed with the drive gear, the rotating electrical machine drives the rotating speed reducer to rotate, rotatory speed reducer drives drive gear and rotates, and drive gear drives transmission bearing and rotates, and transmission bearing drives bearing installation piece and rotates, and bearing installation piece drives swinging boom device and rotates, the utility model discloses the rotary machine and rotatory speed reducer and swinging boom device cooperation schematic diagram are shown in fig. 5.

The swivel arm device includes X-ray imaging portion and tube ball portion, and X-ray imaging portion is equipped with the dwang through-hole, and rotating electrical machines and rotatory speed reducer are located X-ray imaging portion, and X-ray imaging portion is located bearing installation piece opposite side and with bearing installation piece fixed connection, and X-ray imaging portion is equipped with X-ray imaging device, and tube ball portion is equipped with the tube ball device, can drive the tube ball device when the swivel arm device rotates and rotate, the utility model discloses swivel arm device structure schematic is shown in FIG. 6.

The X-ray imaging device comprises a driving motor, a driving speed reducer, a driving rotating rod, an X-ray imaging device and handles, wherein the driving motor is arranged on the inner side of the pulley and fixedly connected with the pulley, the output end of the driving motor is connected with the driving speed reducer, one end of the driving rotating rod is provided with a gear, one end of the driving rotating rod provided with the gear penetrates through a rotating rod through hole and is meshed with the output end of the pulley and the driving speed reducer, a bearing is arranged between the driving rotating rod and the pulley, the X-ray imaging device is arranged at the other end of the driving rotating rod and is fixedly connected with the driving rotating rod, the number of the handles is two, the two handles are arranged on one side of the X-ray imaging device in parallel and are fixedly connected with the X-ray imaging device, the X-ray imaging device can be driven by the driving motor to rotate independently, the rotation angle of the X-, and can carry out nimble adjustment according to actual practical condition, the utility model discloses X-ray image device schematic structure is shown in figure 7.

The buffering device comprises a buffering installation block, a buffering core rod, a buffering bearing group, a buffering gear, a buffering reset mechanism, a buffering sleeve and a buffering installation frame, wherein the buffering installation block is arranged at the end part of the tube ball and fixedly connected with the tube ball, a core rod through hole is arranged in the middle of the buffering installation block, one end of the buffering core rod penetrates through the core rod through hole and is rotatably connected with the buffering installation block, the buffering bearing group comprises two buffering bearings and a bearing support, the two buffering bearings are respectively arranged at the two ends of the buffering core rod and fixedly connected with the buffering core rod, the bearing support is arranged between the buffering bearings and the buffering core rod, the buffering gear is arranged outside the buffering bearing adjacent to the buffering installation block and is fixedly connected with the buffering bearing, the buffering reset mechanism is arranged at one side of the buffering gear, and the buffering sleeve is arranged outside the buffering bearing far away from the buffering, buffering sleeve's one end and buffer gear fixed connection, the setting of buffering mounting bracket at the buffering sleeve other end and with buffering sleeve fixed connection, buffer gear can reduce rotatory influence to the transistor device, the utility model discloses buffer structure schematic diagram is shown in fig. 8.

The buffer reset mechanism comprises a reset connecting rod and a reset rack, reset spring and connecting rod stopper, the connecting rod that resets corresponds the buffering gear setting and rotate with the buffering installation piece in buffering installation piece one side and the one end of connecting rod that resets and be connected, the rack that resets corresponds the buffering gear setting in reset connecting rod one side and with reset connecting rod fixed connection, the rack that resets is connected with buffering gear engagement, reset spring corresponds the connecting rod setting that resets and articulates in buffering installation piece lower part and its one end and buffering installation piece, the reset spring other end articulates with the connecting rod that resets, the connecting rod stopper sets up in buffering installation piece one side lower part and with buffering installation piece fixed connection, buffering canceling release mechanical system can reset buffer gear, make it resume original position after buffering, therefore, the clothes hanger is strong in practicability, the utility model discloses buffering canceling release mechanical structure schematic diagram is shown in fig. 9.

The tube ball device comprises a tube ball mounting frame and a tube ball, the tube ball mounting frame is arranged outside the buffer mounting frame and is fixedly connected with the buffer mounting frame, the tube ball is arranged inside the tube ball mounting frame and is fixedly connected with the tube ball mounting frame and the buffer mounting frame, the tube ball device is arranged on the tube ball part of the rotary arm device through the buffer device, in the working process, the tube ball device and the rotary arm device are still relatively all the time, the winding condition can not occur, and the X-ray imaging device rotates independently, and can form a certain angle with the tube ball device on the rotary arm device so as to carry out multi-angle shooting.

Still include the display screen, the display screen setting in tube ball mounting bracket one side and with tube ball mounting bracket fixed connection, the display screen outside is equipped with the protection frame, protection frame and display screen fixed connection, the protection frame is used for protecting the display screen to prevent to cause the collision at rotatory in-process to the display screen.

Still include electrically controlled device, electrically controlled device set up in tube ball mounting bracket one side and with tube ball mounting bracket fixed connection, electrically controlled device and promote the equal electric connection of motor, rotating electrical machines, rotary speed reducer, driving motor, drive speed reducer, X-ray imaging equipment, tube ball and display screen, the utility model discloses the electric connection picture is shown as figure 10.

The working process is as follows:

starting equipment, hoist mechanism in the stand device drives the slider and goes up and down, the slider drives the coaster motion, the coaster drives rotary device and carries out the elevating movement, rotary device can drive the bulb device on swivel arm device and the swinging boom device and rotate, buffer can reduce the rotatory influence to the bulb device, X-ray imaging device can rotate alone under driving motor's drive, and its rotation angle is-180 to plus 180, X-ray imaging device can become certain angle with the bulb device on the swinging boom device in order to carry out the multi-angle and shoot, consequently the utility model discloses can carry out vertical shot or horizontal shot, the in service behavior is nimble, and the practicality is strong.

The beneficial effects of the utility model are that X-ray imaging device breaks away from the independent setting of swivel arm device, and X-ray imaging device's rotation angle increase is-180 to plus 180, has enlarged the shooting scope of DR machine, and the in service behavior of DR machine is more nimble simultaneously, is equipped with buffer between tube ball device and the swivel arm device, reduces the rotatory influence to the tube ball device, and the relative position between tube ball device and the swivel arm device keeps unchangeable, the condition of kinking can not appear, and is easy and simple to handle.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a 3DDR machine, includes base (1) and stand device (2), base (1) sets firmly subaerial, stand device (2) are located the base upper end, its characterized in that still includes rotary device (3), swivel arm device (4), X-ray image device (5), buffer (6) and tube ball device (7), rotary device (3) are located the stand device (2) outside, swivel arm device (4) and X-ray image device (5) all are located the rotary device (3) outside, buffer (6) are located swivel arm device (4) one end, tube ball device (7) are located the buffer (6) outside.

2. The 3DDR machine as claimed in claim 1, wherein the column device (2) comprises a column (8), a lifting mechanism and a pulley (9), the column (8) is hollow inside, the lifting mechanism comprises a sprocket mounting rack (10), a worm (11), driving sprockets (12), a lifting motor (13), a slider (14) and a linear guide (15), the sprocket mounting rack (10) is arranged at the upper end inside the column (8) and is fixedly connected with the column (8), the worm (11) penetrates through the sprocket mounting rack (10) and is rotatably connected with the sprocket mounting rack (10), the driving sprockets (12) are two, the two driving sprockets (12) are arranged side by side at two ends of the worm (11) and are fixedly connected with the worm (11), the lifting motor (13) is arranged at the lower end of the sprocket mounting rack (10) and is fixedly connected with the sprocket mounting rack (10), the output of hoisting motor (13) is equipped with the turbine, the turbine with worm (11) meshing is connected, driving sprocket (12) with slider (14) chain is connected, linear guide (15) set up stand (8) inside and with stand (8) fixed connection, coaster (9) are installed through slider (14) on linear guide (15).

3. The 3DDR machine as claimed in claim 1, wherein the rotating device (3) comprises a transmission bearing (16), a bearing mounting block (17), a transmission gear (18), a gear mounting block (19), a rotating electrical machine (20) and a rotating speed reducer (21), the transmission bearing (16) is arranged outside the tackle (9) and fixedly connected with the tackle (9), the bearing mounting block (17) is arranged at one side of the transmission bearing (16) and fixedly connected with the transmission bearing (16), the transmission gear (18) is arranged outside the transmission bearing (16) and fixedly connected with the transmission bearing (16), the gear mounting block (19) is arranged at one side of the transmission gear (18) corresponding to the bearing mounting block (17) and fixedly connected with the transmission gear (18), the rotating electrical machine (20) is arranged inside the rotating arm device (4) and fixedly connected with the rotating arm device (4), the output end of the rotating motor (20) is connected with the rotating speed reducer (21), and the output end of the rotating speed reducer (21) penetrates through the rotating arm device (4) and is meshed with the transmission gear (18) to be connected.

4. The 3DDR machine as claimed in claim 1, wherein the rotating arm device (4) comprises an X-ray imaging part (22) and a pipe ball part (23), the X-ray imaging part (22) is provided with a rotating rod through hole (24), a rotating motor (20) and a rotating speed reducer (21) are located in the X-ray imaging part (22), and the X-ray imaging part (22) is located on the other side of the bearing mounting block (17) and is fixedly connected with the bearing mounting block (17).

5. The 3DDR machine as claimed in claim 1, wherein the X-ray imaging device (5) comprises a driving motor (25), a driving speed reducer (26), a driving rotating rod (27), an X-ray imaging device (28) and a handle (29), the driving motor (25) is disposed inside the tackle (9) and fixedly connected with the tackle (9), the output end of the driving motor (25) is connected with the driving speed reducer (26), a gear is disposed at one end of the driving rotating rod (27), one end of the driving rotating rod (27) having the gear penetrates through the rotating rod through hole (24) and the tackle (9) and is in meshed connection with the output end of the driving speed reducer (26), a bearing is disposed between the driving rotating rod (27) and the tackle (9), the X-ray imaging device (28) is disposed at the other end of the driving rotating rod (27) and is fixedly connected with the driving rotating rod (27), the X-ray imaging device is characterized in that the number of the handles (29) is two, the two handles (29) are arranged on one side of the X-ray imaging device (28) in parallel and are fixedly connected with the X-ray imaging device (28), and the rotation angle of the X-ray imaging device is minus 180 degrees to plus 180 degrees.

6. The 3DDR machine as claimed in claim 1, wherein the buffer device (6) comprises a buffer mounting block (30), a buffer core rod (31), a buffer bearing set, a buffer gear (32), a buffer reset mechanism, a buffer sleeve (33) and a buffer mounting frame (34), the buffer mounting block (30) is arranged at an end of the pipe ball part (23) and fixedly connected with the pipe ball part (23), a core rod through hole is arranged in the middle of the buffer mounting block (30), one end of the buffer core rod (31) penetrates through the core rod through hole and is rotatably connected with the buffer mounting block (30), the buffer bearing set comprises a buffer bearing (35) and a bearing support (36), the number of the buffer bearings (35) is two, the two buffer bearings (35) are respectively arranged at two ends of the buffer core rod (31) and fixedly connected with the buffer core rod (31), bearing support (36) set up buffer bearing (35) with between buffering core bar (31), buffer gear (32) set up with buffer bearing (35) that buffering installation piece (30) are adjacent outside and rather than fixed connection, buffering canceling release mechanical system sets up buffer gear (32) one side, buffer sleeve (33) set up and are keeping away from buffer bearing (35) outside and rather than fixed connection of buffering installation piece (30), the one end of buffer sleeve (33) with buffer gear (32) fixed connection, buffer mounting bracket (34) set up buffer sleeve (33) the other end and with buffer sleeve (33) fixed connection.

7. The 3DDR machine as claimed in claim 6, wherein the buffer reset mechanism comprises a reset connecting rod (37), a reset rack (38), a reset spring (39) and a connecting rod limiting block (40), the reset connecting rod (37) is disposed at one side of the buffer mounting block (30) corresponding to the buffer gear (32) and one end of the reset connecting rod (37) is rotatably connected with the buffer mounting block (30), the reset rack (38) is disposed at one side of the reset connecting rod (37) corresponding to the buffer gear (32) and is fixedly connected with the reset connecting rod (37), the reset rack (38) is engaged with the buffer gear (32), the reset spring (39) is disposed at the lower part of the buffer mounting block (30) corresponding to the reset connecting rod (37) and one end thereof is hooked with the buffer mounting block (30), the other end of the reset spring (39) is articulated with the reset connecting rod (37), and the connecting rod limiting block (40) is arranged on the lower part of one side of the buffer mounting block (30) and is fixedly connected with the buffer mounting block (30).

8. A 3DDR machine as claimed in claim 1, wherein said tube ball device (7) comprises a tube ball mounting bracket (41) and a tube ball (42), said tube ball mounting bracket (41) is arranged outside the buffer mounting bracket (34) and fixedly connected with the buffer mounting bracket (34), said tube ball (42) is arranged inside said tube ball mounting bracket (41) and fixedly connected with both said tube ball mounting bracket (41) and the buffer mounting bracket (34).

9. The 3DDR machine as claimed in claim 1, further comprising a display screen (43), wherein the display screen (43) is arranged on one side of the tube ball mounting rack (41) and fixedly connected with the tube ball mounting rack (41), a protection frame (44) is arranged on the outer side of the display screen (43), and the protection frame (44) is fixedly connected with the display screen (43).

10. The 3DDR machine as claimed in claim 1, further comprising an electric control device (45), wherein the electric control device (45) is disposed on one side of the tube ball mounting rack (41) and fixedly connected to the tube ball mounting rack (41), and the electric control device (45) is electrically connected to the lifting motor (13), the rotating motor (20), the rotating speed reducer (21), the driving motor (25), the driving speed reducer (26), the X-ray imaging device (28), the tube ball (42) and the display screen (43).