阅读说明：本技术 一种动车构架自动探伤机及其工作方法 (automatic flaw detector for bullet train frame and working method of automatic flaw detector ) 是由 杨宝林 谢莹莹 王鑫 方孝钟 杨红伟 孙佳 张迪 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种动车构架自动探伤机,含有机架、磁化喷淋室、托起定位支承装置和夹持旋转输送装置,磁化喷淋室位于机架的后部,磁化喷淋室内设有磁化线圈装置和磁悬液喷淋系统；夹持旋转输送装置位于机架上,夹持旋转输送装置能够在机架上前后移动,托起定位支承装置设置在机架的前部,夹持旋转输送装置在机架上移动时能够在磁化线圈装置中通过,进行磁化、观察磁痕及退磁。本发明的线圈单元一、线圈单元二和线圈单元三构成三维笼式的磁化区域,对构架进行高效完整的磁化；并且线圈单元三可开合,用于构架的进出。本发明能够对构架的复杂结构进行机械化探伤作业,与现有技术通过人工分段进行探伤相比,因此不仅省工省时效率高,而且探伤质量好。(The invention discloses an automatic flaw detector for a bullet train framework, which comprises a rack, a magnetization spray chamber, a supporting and positioning supporting device and a clamping rotary conveying device, wherein the magnetization spray chamber is positioned at the rear part of the rack, and a magnetization coil device and a magnetic suspension spray system are arranged in the magnetization spray chamber; the clamping rotary conveying device is positioned on the rack, can move back and forth on the rack, the supporting and positioning supporting device is arranged at the front part of the rack, and the clamping rotary conveying device can pass through the magnetizing coil device when moving on the rack to magnetize, observe magnetic traces and demagnetize. The coil unit I, the coil unit II and the coil unit III form a three-dimensional cage type magnetization area, and the framework is magnetized efficiently and completely; and the coil unit III can be opened and closed and is used for the in and out of the framework. The invention can carry out mechanized flaw detection operation on the complex structure of the framework, and compared with the prior art of carrying out flaw detection through manual segmentation, the invention not only saves labor and time and has high efficiency, but also has good flaw detection quality.)

1. an automatic flaw detector for a bullet train frame is characterized by comprising a rack, a magnetizing spray chamber, a supporting and positioning supporting device and a clamping rotary conveying device, wherein the magnetizing spray chamber is positioned at the rear part of the rack, and a magnetizing coil device and a magnetic suspension spray system are arranged in the magnetizing spray chamber; the clamping rotary conveying device is positioned on the rack, the clamping rotary conveying device can move back and forth on the rack, the supporting and positioning supporting device is arranged at the front part of the rack, and the clamping rotary conveying device can pass through the magnetizing coil device when moving on the rack.

2. the automatic flaw detector for the bullet train frame according to claim 1, wherein the clamping rotary conveying device comprises a front clamping device, a rear clamping device, a bottom plate, a guide rail and a driving device, the front clamping device and the rear clamping device are identical in structure, the front clamping device and the rear clamping device are symmetrically arranged at the front part and the rear part of the bottom plate, the guide rail is arranged on the frame, and the bottom plate is arranged on the guide rail and is movably connected with the guide rail; the front clamping device comprises a clamping arm, a rotating shaft, a supporting seat, a sliding rail, a moving cylinder, a speed reducer and a motor, wherein the rotating shaft is rotatably connected with the upper part of the supporting seat; the driving device comprises a front chain wheel, a rear chain wheel, a chain, a driving speed reducer and a driving motor, wherein the driving motor is connected with the driving speed reducer, the driving speed reducer is arranged at the rear end part of the rack, the front chain wheel and the rear chain wheel are respectively in rotating connection with the front middle part and the rear end part of the rack, the front chain wheel and the rear chain wheel are connected through the chain, a connecting plate is arranged on the chain, the connecting plate is connected with the bottom plate, and the driving speed reducer is connected with the rear chain wheel.

3. the automatic flaw detector for the bullet train frame according to claim 2, wherein the chuck comprises a chuck seat, a first clamping cylinder, a second clamping cylinder, a first clamping jaw, a second clamping jaw, a clamping jaw support plate and a positioning seat, the positioning seat is arranged at the front end of the chuck seat, the clamping jaw support plate is arranged at the front inner part of the chuck seat, the middle parts of the first clamping jaw and the second clamping jaw are respectively hinged with two sides of the chuck support plate, the first clamping cylinder and the second clamping cylinder are hinged with the rear part of the chuck seat, a piston rod of the first clamping cylinder and a piston rod of the second clamping cylinder are respectively hinged with the rear end of the first clamping jaw and the rear end of the second clamping jaw, and the chuck seat is fixed on the clamping arm.

4. the automatic flaw detector for bullet train frames according to claim 3, wherein the supporting device comprises four supporting units with the same structure and symmetrically distributed at the front part of the machine frame; the supporting and positioning supporting unit comprises a support, a lifting cylinder, a supporting head, a guide rail seat and a horizontal moving cylinder, the guide rail seat is fixed on the rack, the bottom of the support is movably connected with the guide rail seat, the horizontal moving cylinder is hinged with the guide rail seat, a piston rod of the horizontal moving cylinder is hinged with the support, the lifting cylinder is arranged on the support, and the supporting head is arranged on a piston rod of the lifting cylinder.

5. the automatic flaw detector for bullet train frames according to claim 4, wherein said supporting head is of a truncated cone structure.

6. the automatic flaw detector for bullet train frames according to claim 5, wherein said magnetic shower comprises a housing, the lower end of which is disposed on said rack, and the front and rear of which are respectively provided with a movable front door and a movable rear door.

7. The automatic flaw detector for bullet train frames according to any one of claims 1 to 6, wherein the magnetizing coil device comprises a fixed frame, a movable frame, a left air cylinder, a right air cylinder, a first coil unit, a second coil unit and a third coil unit; the fixed frame comprises a frame at the top, four upright posts are arranged at four corners of the frame respectively, the four upright posts are arranged on the frame, the movable frame comprises a left movable frame and a right movable frame, the left movable frame and the right movable frame are positioned on the left side and the right side in the fixed frame respectively, the upper end of the left movable frame and the upper end of the right movable frame are movably connected with the frame respectively, the lower end of the left movable frame and the lower end of the right movable frame are movably connected with the frame respectively, the left movable frame and the right movable frame can move left and right in the frame, the middle of the left movable frame is hinged with a left air cylinder, the left air cylinder is arranged on a left cross beam, two ends of a left cross beam are arranged in the middle of two upright posts on the left side of the fixed frame respectively, the middle of the right movable frame is hinged with a right air cylinder, the right;

The coil unit I is composed of a plurality of coils along the front and back directions of the rack, the plurality of coils along the front and back directions of the rack are arranged in the middle of the fixed frame at equal intervals, the left moving frame and the right moving frame are positioned on the left side and the right side of the coil unit I, and the guide rail penetrates through the inner lower parts of the plurality of coils along the front and back directions of the rack;

The second coil unit is composed of a left coil along the left-right direction of the rack and a right coil along the left-right direction of the rack, and the left coil and the right coil are respectively arranged on the outer side of the left moving frame and the outer side of the right moving frame;

The coil unit III comprises a plurality of open-close type coils and coil opening and closing devices along the vertical direction of the rack, the plurality of open-close type coils along the vertical direction of the rack comprise a left half coil and a right half coil, the left half coil of the open-close type coil is sequentially arranged at the inner side of the left moving frame from top to bottom, the right half coil of the open-close type coil is sequentially arranged at the inner side of the right moving frame from top to bottom,

The coil opening and closing devices are arranged at the front ends of all right half coils in the opening and closing type coils, and the coil opening and closing devices are arranged at the rear ends of the right half coils except the rear end of the uppermost right half coil and the rear ends of the other right half coils.

8. the automatic flaw detector for bullet train frames according to claim 7, wherein the coil opening and closing device comprises a pressing frame, a pressing cylinder and a pressing head, the pressing cylinder is arranged on the outer side surface of the pressing frame, the pressing head is arranged on a piston rod of the pressing cylinder, and the front end or the rear end of the right half coil of the opening and closing coil is arranged on one side surface inside the pressing frame.

9. the automatic flaw detector for bullet train frames according to claim 1, wherein the magnetic suspension spraying system comprises a spray pipe, and the spray pipe is arranged on the fixing frame.

10. A working method of an automatic flaw detector for a bullet train frame based on the claim 7 comprises the following steps:

(1) four supporting and positioning support units of the supporting and positioning support device move inwards to wait for the framework to be fed;

(2) The framework is hoisted to the supporting heads of the four supporting and positioning supporting units of the positioning supporting device through a crown block;

(3) four cylinders for supporting the positioning and supporting units simultaneously push the lifting frame and the lifting frame together, and the frame is positioned in the vertical direction;

(4) The front clamping device and the rear clamping device of the clamping rotary conveying device are simultaneously pushed to approach each other through respective moving cylinders, and the framework is positioned in the horizontal direction;

(5) the clamping head clamping framework on the clamping arm of each of the front clamping device and the rear clamping device;

(6) The four cylinders of the positioning and supporting device for supporting the positioning and supporting units retract, the supporting head descends to separate from the framework, and the four supporting positioning and supporting units of the positioning and supporting device are supported to return to the initial positions;

(7) the clamping rotary conveying device rotates the framework by 90 degrees and horizontally to form a vertical state;

(8) under the drive of the clamping rotary conveying device, the framework enters a magnetizing spraying chamber;

(9) the front and the back of the magnetization spray room are respectively provided with a movable front door and a movable back door which are closed;

(10) the left moving frame and the right moving frame of the magnetizing coil device are respectively pushed by the left air cylinder and the right air cylinder, the opening-closing type coil of the coil unit III is closed, and synchronous magnetization is carried out after magnetic suspension is sprayed;

(11) After the magnetization is finished, the left moving frame and the right moving frame of the magnetizing coil device are separated by pulling the opening-closing coils of the lower coil unit III by the left air cylinder and the right air cylinder respectively, and the movable front door and the movable rear door of the magnetizing spray room are opened;

(12) under the drive of the clamping rotary conveying device, the framework is moved out of the magnetizing spray chamber to reach a feeding observation position, and magnetic traces on the lower part of the framework are observed;

(13) under the drive of the clamping rotary conveying device, the framework rotates 180 degrees, the previous upper side region which is not observed is rotated to the lower side, and the magnetic traces of the rest part of the framework are observed;

(14) Under the drive of the clamping rotary conveying device, the framework enters the magnetization spraying chamber again;

(15) under the pushing of the left air cylinder and the right air cylinder, the opening-closing type coil of the coil unit III is closed, and the framework is demagnetized;

(16) after the demagnetization is finished, the left moving frame and the right moving frame of the magnetizing coil device are pulled by the left air cylinder and the right air cylinder respectively to separate the open-close type coils of the coil unit III;

(17) under the drive of the clamping rotary conveying device, the framework moves out of the magnetizing spray chamber to reach a feeding observation position;

(18) under the drive of the clamping rotary conveying device, the framework rotates 270 degrees to return to the horizontal state;

(19) The four supporting and positioning supporting units of the supporting and positioning supporting device move inwards, and the supporting heads of the four supporting and positioning supporting units ascend to support the framework;

(20) Clamping the front clamping device and the rear clamping device of the rotary conveying device, clamping the upper chuck of the clamping arm and loosening the framework, wherein the front clamping device and the rear clamping device are far away from each other and are separated from the framework;

(21) the four supporting heads of the positioning and supporting device for supporting the positioning and supporting units descend together with the framework to wait for the overhead travelling crane to come in for blanking.

Technical Field

the invention relates to a railway vehicle detection and flaw detection device, in particular to an automatic flaw detector for a bullet train frame.

background

the frame is an important component of a motor vehicle running gear. The framework is usually subjected to a polishing process after overlaying, and considering that part of welding seams are wide and parent metal and the welding seams cannot be clearly distinguished after polishing, the flaw detection area is large. The portable flaw detector adopted in the prior art is small in one-time flaw detection area compared with the whole welding line, and the whole welding line can be welded only by multiple times of cross operation, so that the condition of missed detection is easily generated. Due to the special bead structure of the framework, flaw detection can be carried out only through manual segmentation at present, so that labor and time are wasted, and the flaw detection quality cannot be guaranteed. The equipment for carrying out comprehensive flaw detection on the defects of the framework and having good flaw detection quality does not exist at present.

disclosure of Invention

The invention aims to solve the technical problem of providing the bullet train framework automatic flaw detector, and the bullet train framework automatic flaw detector and the working method thereof are labor-saving, time-saving, high in efficiency and good in flaw detection quality.

In order to solve the technical problem, the automatic flaw detector for the bullet train framework comprises a rack, a magnetization spray chamber, a supporting and positioning device and a clamping rotary conveying device, wherein the magnetization spray chamber is positioned at the rear part of the rack, and a magnetization coil device and a magnetic suspension spray system are arranged in the magnetization spray chamber; the clamping rotary conveying device is positioned on the rack, the clamping rotary conveying device can move back and forth on the rack, the supporting and positioning supporting device is arranged at the front part of the rack, and the clamping rotary conveying device can pass through the magnetizing coil device when moving on the rack.

the clamping rotary conveying device comprises a front clamping device, a rear clamping device, a bottom plate, a guide rail and a driving device, the front clamping device and the rear clamping device are identical in structure, the front clamping device and the rear clamping device are symmetrically positioned at the front part and the rear part of the bottom plate, the guide rail is arranged on the rack, and the bottom plate is positioned on the guide rail and movably connected with the guide rail; the front clamping device comprises a clamping arm, a rotating shaft, a supporting seat, a sliding rail, a moving cylinder, a speed reducer and a motor, wherein the rotating shaft is rotatably connected with the upper part of the supporting seat; the driving device comprises a front chain wheel, a rear chain wheel, a chain, a driving speed reducer and a driving motor, wherein the driving motor is connected with the driving speed reducer, the driving speed reducer is arranged at the rear end part of the rack, the front chain wheel and the rear chain wheel are respectively in rotating connection with the front middle part and the rear end part of the rack, the front chain wheel and the rear chain wheel are connected through the chain, a connecting plate is arranged on the chain, the connecting plate is connected with the bottom plate, and the driving speed reducer is connected with the rear chain wheel.

the clamping head comprises a clamping head seat, a first clamping cylinder, a second clamping cylinder, a first clamping jaw, a second clamping jaw, a clamping jaw support plate and a positioning seat, wherein the positioning seat is arranged at the front end of the clamping head seat, the clamping jaw support plate is arranged at the inner front part of the clamping head seat, the middle parts of the first clamping jaw and the second clamping jaw are hinged with the two sides of the clamping head support plate respectively, the first clamping cylinder and the second clamping cylinder are hinged with the rear part of the clamping head seat, a piston rod of the first clamping cylinder and a piston rod of the second clamping cylinder are hinged with the rear end of the first clamping jaw and the rear end of the second clamping jaw respectively, and the clamping head.

The supporting and positioning supporting device comprises four supporting and positioning supporting units with the same structure, and the four supporting and positioning supporting units are symmetrically distributed at the front part of the rack; the supporting and positioning supporting unit comprises a support, a lifting cylinder, a supporting head, a guide rail seat and a horizontal moving cylinder, the guide rail seat is fixed on the rack, the bottom of the support is movably connected with the guide rail seat, the horizontal moving cylinder is hinged with the guide rail seat, a piston rod of the horizontal moving cylinder is hinged with the support, the lifting cylinder is arranged on the support, and the supporting head is arranged on a piston rod of the lifting cylinder.

the supporting head is of a circular truncated cone structure.

the magnetizing spray room comprises a shell, the lower end of the shell is arranged on the rack, and a movable front door and a movable rear door are respectively arranged at the front part and the rear part of the shell.

the magnetizing coil device comprises a fixed frame, a movable frame, a left air cylinder, a right air cylinder, a first coil unit, a second coil unit and a third coil unit; the fixed frame comprises a frame at the top, four upright posts are arranged at four corners of the frame respectively, the four upright posts are arranged on the frame, the movable frame comprises a left movable frame and a right movable frame, the left movable frame and the right movable frame are positioned on the left side and the right side in the fixed frame respectively, the upper end of the left movable frame and the upper end of the right movable frame are movably connected with the frame respectively, the lower end of the left movable frame and the lower end of the right movable frame are movably connected with the frame respectively, the left movable frame and the right movable frame can move left and right in the frame, the middle of the left movable frame is hinged with a left air cylinder, the left air cylinder is arranged on a left cross beam, two ends of a left cross beam are arranged in the middle of two upright posts on the left side of the fixed frame respectively, the middle of the right movable frame is hinged with a right air cylinder, the right;

The coil unit I is composed of a plurality of coils along the front and back directions of the rack, the plurality of coils along the front and back directions of the rack are arranged in the middle of the fixed frame at equal intervals, the left moving frame and the right moving frame are positioned on the left side and the right side of the coil unit I, and the guide rail penetrates through the inner lower parts of the plurality of coils along the front and back directions of the rack;

The second coil unit is composed of a left coil along the left-right direction of the rack and a right coil along the left-right direction of the rack, and the left coil and the right coil are respectively arranged on the outer side of the left moving frame and the outer side of the right moving frame;

the coil unit III comprises a plurality of open-close type coils and coil opening and closing devices along the vertical direction of the rack, the plurality of open-close type coils along the vertical direction of the rack comprise a left half coil and a right half coil, the left half coil of the open-close type coil is sequentially arranged at the inner side of the left moving frame from top to bottom, the right half coil of the open-close type coil is sequentially arranged at the inner side of the right moving frame from top to bottom,

The coil opening and closing devices are arranged at the front ends of all right half coils in the opening and closing type coils, and the coil opening and closing devices are arranged at the rear ends of the right half coils except the rear end of the uppermost right half coil and the rear ends of the other right half coils.

The coil opening and closing device comprises a pressing frame, a pressing cylinder and a pressing head, wherein the pressing cylinder is arranged on the outer side face of the pressing frame, the pressing head is arranged on a piston rod of the pressing cylinder, and the front end or the rear end of the right half coil of the opening-closing type coil is arranged on one side face inside the pressing frame.

the magnetic suspension spraying system comprises a spraying pipe, and the spraying pipe is arranged on the fixing frame.

The invention further discloses a working method of the automatic flaw detector for the bullet train frame, which comprises the following steps:

(1) Four supporting and positioning support units of the supporting and positioning support device move inwards to wait for the framework to be fed;

(2) the framework is hoisted to the supporting heads of the four supporting and positioning supporting units of the positioning supporting device through a crown block;

(3) Four cylinders for supporting the positioning and supporting units simultaneously push the lifting frame and the lifting frame together, and the frame is positioned in the vertical direction;

(4) The front clamping device and the rear clamping device of the clamping rotary conveying device are simultaneously pushed to approach each other through respective moving cylinders, and the framework is positioned in the horizontal direction;

(5) the clamping head clamping framework on the clamping arm of each of the front clamping device and the rear clamping device;

(6) the four cylinders of the positioning and supporting device for supporting the positioning and supporting units retract, the supporting head descends to separate from the framework, and the four supporting positioning and supporting units of the positioning and supporting device are supported to return to the initial positions;

(7) the clamping rotary conveying device rotates the framework by 90 degrees and horizontally to form a vertical state;

(8) Under the drive of the clamping rotary conveying device, the framework enters a magnetizing spraying chamber;

(9) The front and the back of the magnetization spray room are respectively provided with a movable front door and a movable back door which are closed;

(10) the left moving frame and the right moving frame of the magnetizing coil device are respectively pushed by the left air cylinder and the right air cylinder, the opening-closing type coil of the coil unit III is closed, and synchronous magnetization is carried out after magnetic suspension is sprayed;

(11) after the magnetization is finished, the left moving frame and the right moving frame of the magnetizing coil device are separated by pulling the opening-closing coils of the lower coil unit III by the left air cylinder and the right air cylinder respectively, and the movable front door and the movable rear door of the magnetizing spray room are opened;

(12) under the drive of the clamping rotary conveying device, the framework is moved out of the magnetizing spray chamber to reach a feeding observation position, and magnetic traces on the lower part of the framework are observed;

(13) Under the drive of the clamping rotary conveying device, the framework rotates 180 degrees, the previous upper side region which is not observed is rotated to the lower side, and the magnetic traces of the rest part of the framework are observed;

(14) Under the drive of the clamping rotary conveying device, the framework enters the magnetization spraying chamber again;

(15) under the pushing of the left air cylinder and the right air cylinder, the opening-closing type coil of the coil unit III is closed, and the framework is demagnetized;

(16) after the demagnetization is finished, the left moving frame and the right moving frame of the magnetizing coil device are pulled by the left air cylinder and the right air cylinder respectively to separate the open-close type coils of the coil unit III;

(17) under the drive of the clamping rotary conveying device, the framework moves out of the magnetizing spray chamber to reach a feeding observation position;

(18) under the drive of the clamping rotary conveying device, the framework rotates 270 degrees to return to the horizontal state;

(19) the four supporting and positioning supporting units of the supporting and positioning supporting device move inwards, and the supporting heads of the four supporting and positioning supporting units ascend to support the framework;

(20) Clamping the front clamping device and the rear clamping device of the rotary conveying device, clamping the upper chuck of the clamping arm and loosening the framework, wherein the front clamping device and the rear clamping device are far away from each other and are separated from the framework;

(21) The four supporting heads of the positioning and supporting device for supporting the positioning and supporting units descend together with the framework to wait for the overhead travelling crane to come in for blanking.

Has the advantages that: the coil unit I, the coil unit II and the coil unit III form a three-dimensional cage type magnetization area, and the framework is magnetized efficiently and completely; and the coil unit III can be opened and closed and is used for the in and out of the framework. When the magnetic spraying device is used, firstly, the framework is placed on the supporting and positioning supporting device through the crown block, the framework is clamped into the magnetic spraying chamber through the clamping and rotating conveying device, and the magnetic coil device is electrified and magnetized; the clamping rotary conveying device moves the framework out of the magnetization spray chamber and rotates to conveniently observe the magnetic traces of the framework; and finally, clamping the framework by the clamping rotary conveying device and then entering the magnetizing spraying chamber again to demagnetize the framework.

The invention can carry out mechanized flaw detection operation on the complex structure of the framework, and compared with the prior art of carrying out flaw detection through manual segmentation, the invention not only saves labor and time and has high efficiency, but also has good flaw detection quality.

Drawings

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

FIG. 2 is a schematic diagram of a magnetizing coil device;

FIG. 3 is a schematic structural diagram of a coil unit III;

FIG. 4 is a schematic structural diagram of a coil opening and closing device;

FIG. 5 is a partial schematic view of the chuck;

fig. 6 is a partial structural view of the supporting unit for supporting and positioning.

Detailed Description

in fig. 1, the automatic flaw detector for the bullet train frame comprises a frame, a magnetizing spray chamber, a supporting and positioning device 18 and a clamping rotary conveying device 3. The magnetizing spray room is arranged at the rear part of the frame, and a magnetizing coil device and a magnetic suspension spray system are arranged in the magnetizing spray room. The clamping rotary conveying device 3 is positioned on the frame, the clamping rotary conveying device 3 can move back and forth on the frame, the supporting and positioning device 18 is arranged at the front part of the frame, and the clamping rotary conveying device 3 can pass through the magnetizing coil device when moving on the frame.

the clamping rotary conveying device 3 comprises a front clamping device 2, a rear clamping device 4, a bottom plate, a guide rail and a driving device. The front clamping device 2 and the rear clamping device 4 are identical in structure, and the front clamping device 2 and the rear clamping device 4 are symmetrically arranged at the front part and the rear part of the bottom plate. The guide rail sets up on the frame, the bottom plate is located the guide rail, and constitutes the removal with the guide rail and be connected. The front clamping device 2 includes a clamping arm 23, a rotating shaft 25, a supporting seat 26, a slide rail 24, a moving cylinder 27, a speed reducer 28, and a motor 1. The rotating shaft 25 is rotatably connected with the upper part of the supporting seat 26, one end of the rotating shaft 25 is arranged in the middle of the clamping arm 23, two ends of the clamping arm 23 are respectively provided with a chuck, the other end of the rotating shaft 25 is connected with the speed reducer 28, the speed reducer 28 is connected with the motor 1, and the speed reducer 28 is arranged on the supporting seat 26. The supporting seat 26 is movably connected with the slide rail 24, the slide rail 24 is fixed at the front part of the bottom plate, the moving cylinder 27 is hinged with the front part of the bottom plate, and a piston rod of the moving cylinder 27 is hinged with the supporting seat 26. The driving device content has preceding sprocket, rear sprocket, chain 13, drive speed reducer and driving motor 12, and driving motor 12 links to each other with the drive speed reducer, and the drive speed reducer setting is in the rear end of frame, preceding sprocket and rear sprocket respectively with the preceding middle part and the rear end of frame constitute the rotation and connect, and preceding sprocket and rear sprocket pass through chain 13 links to each other, is equipped with the connecting plate on the chain 13, this connecting plate with the bottom plate links to each other, and the drive speed reducer links to each other with the rear sprocket.

The structure of the chuck on the front clamping device 2 is the same as that of the chuck on the rear clamping device 4, and the chuck on the right side of the clamping arm 34 of the rear clamping device 4 is taken as an example, as shown in fig. 5, the chuck comprises a chuck base 30, a first clamping cylinder 33, a second clamping cylinder 32, a first clamping jaw 29, a second clamping jaw 31, a clamping jaw support plate 35 and a positioning seat 36. The positioning seat 36 is arranged at the front end of the chuck base 30, the clamping jaw bracket 35 plate is arranged at the inner front part of the chuck base 30, and the middle parts of the first clamping jaw 29 and the second clamping jaw 31 are respectively hinged with the two sides of the chuck bracket plate 35. The first clamping cylinder 33 and the second clamping cylinder 32 are hinged with the rear part of the clamping head seat 30, a piston rod of the first clamping cylinder 33 and a piston rod of the second clamping cylinder 32 are hinged with the rear end of the first clamping jaw 29 and the rear end of the second clamping jaw 31 respectively, and the clamping head seat 30 is fixed on the right side of a clamping arm 34 of the rear clamping device 4.

as shown in fig. 1, the supporting device 18 includes four supporting units with the same structure, which are symmetrically distributed at the front of the rack. As shown in fig. 6, the supporting and positioning support unit includes a support 37, a lifting cylinder 21, a support head 22, a rail seat 19 and a horizontal moving cylinder 20, the rail seat 19 is fixed on the frame, the bottom of the support 37 is movably connected with the rail seat 19, the horizontal moving cylinder 20 is hinged with the rail seat 19, a piston rod of the horizontal moving cylinder 20 is hinged with the support 37, the lifting cylinder 21 is disposed on the support 37, and the support head 22 is disposed on the piston rod of the lifting cylinder 21.

In order to improve the positioning effect, the supporting head 22 is of a truncated cone structure.

the magnetizing spray room comprises a shell, wherein the shell is not shown in the figure, the lower end of the shell is arranged on the rack, and the front part and the rear part of the shell are respectively provided with a movable front door and a movable rear door.

As shown in fig. 2, the magnetizing coil device includes a fixed frame, a movable frame, a left cylinder, a right cylinder 14, a first coil unit, a second coil unit, and a third coil unit. The fixing frame comprises a frame 7 at the top, four upright posts 16 are respectively arranged at four corners of the frame 7, and the four upright posts 16 are all arranged on the machine frame. Remove the frame including a left side remove 5 and right side remove 17, remove 5 and right side on a left side and the right side that 17 is located the mount inside respectively, remove 5 upper ends on a left side and the right side remove 17 upper ends respectively with frame 7 constitutes and removes the connection, remove 5 lower extremes on a left side and the right side remove 17 lower extreme respectively with the frame constitutes to remove the connection, and remove 5 and the right side and remove 17 and can remove about in the frame on a left side. The middle part of the left moving frame 5 is hinged with a left air cylinder, the left air cylinder is arranged on a left cross beam, and two ends of the left cross beam are respectively arranged in the middle parts of two upright columns on the left side of the fixed frame; the middle part of the right moving frame 17 is hinged with the right cylinder 14, the right cylinder 14 is arranged on the right cross beam 15, and two ends of the right cross beam 15 are respectively arranged in the middle parts of two upright columns on the right side of the fixed frame.

coil unit one comprises the coil 11 of a plurality of along the frame fore-and-aft direction, and a plurality of is along the equidistant setting of coil 11 of frame fore-and-aft direction at the interior middle part of mount, the left side removes frame 5 and the right side and removes the frame 17 and be located the left side and the right of coil unit one, just the guide rail passes the interior lower part of a plurality of along the coil 11 of frame fore-and-aft direction. The adjacent coils 11 are connected by a wire.

The coil unit two is composed of a left coil 10 in the rack left-right direction and a right coil in the rack left-right direction. The left coil 10 and the right coil are disposed outside the left moving frame 5 and outside the right moving frame 17, respectively. The left coil 10 and the right coil are connected through a flexible lead.

as shown in fig. 3, the third coil unit includes a plurality of open-close coils along the vertical direction of the frame and a coil open-close device 8. The plurality of open-close type coils along the vertical direction of the machine frame all comprise a left half coil 6 and a right half coil 9, the left half coil 6 of the open-close type coils is sequentially arranged at the inner side of the left moving frame 5 from top to bottom, the right half coil 9 of the open-close type coils is sequentially arranged at the inner side of the right moving frame 17 from top to bottom,

the front ends of all right half-coils 9 in the open-close type coils are all provided with the coil open-close device 8, and the rear ends of the other right half-coils 9 except the rear end of the topmost right half-coil 9 in the right half-coils 9 are all provided with the coil open-close device 8.

As shown in fig. 4, the coil opening and closing device includes a pressing frame 37, a pressing cylinder 39, and a pressing head 38, the pressing cylinder 39 is disposed on an outer side surface of the pressing frame 37, and the pressing head 38 is disposed on a piston rod of the pressing cylinder 39. In actual use, the front end or the rear end of the right half coil 9 of the opening-closing type coil is arranged on one side surface inside the pressing frame 37. When the left coil half 6 and the right coil half 9 are required,

the front end and the rear end of the left half coil 6 are respectively inserted into the pressing frame 37, and then the pressing cylinder 39 respectively drives the pressing head 38 to clamp the front end and the rear end of the left half coil 6, so as to close the left half coil 6 and the right half coil 9.

the magnetic suspension spraying system comprises a spraying pipe, and the spraying pipe is arranged on the fixing frame. Since the magnetic suspension spraying system is the prior art, the details are not described.

The invention further discloses a working method of the automatic flaw detector for the bullet train frame, which comprises the following steps:

(1) the four supporting and positioning support units of the supporting and positioning support device 18 move inwards at the same time to wait for framework loading;

(2) The framework is hoisted to the four supporting heads 22 of the positioning supporting device 18 for supporting the positioning supporting unit through a crown block;

(3) Four cylinders for supporting the positioning and supporting units simultaneously push the lifting frame and the lifting frame together, and the frame is positioned in the vertical direction;

(4) the front clamping device 2 and the rear clamping device 4 of the clamping rotary conveying device 3 are simultaneously pushed to approach each other through respective moving cylinders, and a framework is positioned in the horizontal direction;

(5) the chucks 22 on the respective clamping arms of the front clamping device 2 and the rear clamping device 4 clamp the frame;

(6) The cylinders for supporting the four supporting and positioning supporting units of the positioning and supporting device 18 retract, the supporting head 22 descends to separate from the framework, and the four supporting and positioning supporting units for supporting the positioning and supporting device 18 return to the initial positions;

(7) the clamping rotary conveying device 3 rotates the framework by 90 degrees and horizontally to form a vertical state;

(8) under the drive of the clamping rotary conveying device 3, the framework enters a magnetizing spraying chamber;

(9) The front and the back of the magnetization spray room are respectively provided with a movable front door and a movable back door which are closed;

(10) The left moving frame 5 and the right moving frame 17 of the magnetizing coil device are respectively pushed by the left air cylinder and the right air cylinder 14, the open-close type coil of the coil unit III is closed, and synchronous magnetization is carried out after magnetic suspension is sprayed;

(11) after the magnetization is finished, the left moving frame 5 and the right moving frame 17 of the magnetizing coil device are pulled by the left air cylinder and the right air cylinder 14 respectively to separate the open-close type coils of the coil unit III, and the movable front door and the movable rear door of the magnetizing spray room are opened;

(12) Under the drive of the clamping rotary conveying device 3, the framework is moved out of the magnetizing spray chamber to reach a feeding observation position, and a worker observes magnetic traces on the lower part of the framework at the moment;

(13) under the drive of the clamping rotary conveying device 3, the framework rotates 180 degrees, the previous upper side region which is not observed is rotated to the lower side, and the worker observes the magnetic traces of the rest part of the framework at the moment;

(14) under the drive of the clamping rotary conveying device 3, the framework enters the magnetization spraying chamber again;

(15) the left moving frame 5 and the right moving frame 17 of the magnetizing coil device are respectively pushed by the left air cylinder and the right air cylinder 14, the opening-closing type coil of the coil unit III is closed, and demagnetization operation is carried out on the framework;

(16) after the demagnetization is finished, the left moving frame 5 and the right moving frame 17 of the magnetizing coil device are pulled by the left air cylinder and the right air cylinder 14 respectively to separate the open-close type coils of the coil unit III;

(17) under the drive of the clamping rotary conveying device 3, the framework moves out of the magnetizing spray chamber to reach a feeding observation position;

(18) under the drive of the clamping rotary conveying device 3, the framework rotates 270 degrees to return to the horizontal state;

(19) the four support positioning support units of the support positioning support device 18 move inward, and the four support positioning support unit support heads 22 lift up to support the framework;

(20) the front clamping device 2 and the rear clamping device 4 of the clamping rotary conveying device 3 clamp the upper chuck of the arm to loosen the framework, and the front clamping device 2 and the rear clamping device 4 are far away from each other and are separated from the framework;

(21) the support heads 22 of the four support positioning support units of the support positioning support device 18 are lowered together with the frame to wait for the overhead traveling crane to come in for blanking.

The bullet train framework automatic flaw detector can perform mechanical flaw detection operation on the special bead structure of the framework, and compared with the prior art of performing flaw detection through manual segmentation, the bullet train framework automatic flaw detector is labor-saving, time-saving, high in efficiency and good in flaw detection quality.

the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.