CN212111267U - Ultrasonic flaw detector for multi-specification pipe and bar materials - Google Patents

Abstract

The utility model discloses a multi-specification pipe bar ultrasonic flaw detector, which comprises a frame, wherein an auxiliary roller way is arranged on the frame, a detection box is arranged on the frame, an ultrasonic detection unit for performing ultrasonic detection on bars is arranged in the detection box, and a driving unit for driving the pipe bars to move is arranged on the frame; the auxiliary roller way comprises an adjusting plate which is connected to the rack through a pivot, two ends of the adjusting plate are respectively hinged to one end of a first cross rod and one end of a second cross rod, a plurality of groups of roller assemblies are arranged between the first cross rod and the second cross rod at intervals, each roller assembly comprises a first roller mounting plate and a second roller mounting plate, two ends of the first roller mounting plate are respectively hinged to the first cross rod and the rack, and two ends of the second roller mounting plate are respectively hinged to the second cross rod and the rack; the first roller mounting plate and the second roller mounting plate are provided with first rollers and second rollers which are distributed in a staggered manner. Through improving its structure, can carry out eccentric angular adjustment, convenient operation to first gyro wheel, second gyro wheel simultaneously.

Description

Ultrasonic flaw detector for multi-specification pipe and bar materials

Technical Field

The utility model relates to a defectoscope technical field especially relates to a many specifications pipe rod ultrasonic flaw detector.

Background

Before leaving the factory, the pipe and the bar must be subjected to ultrasonic nondestructive testing to comprehensively know whether various cracks, slag inclusions, micro cavities and layering defects are generated in the product in the production or rolling heat treatment process and the like. In order to adapt to the detection of longer products, a roller type conveying device is generally adopted to lead the pipe and the bar to spirally advance according to a certain pitch so as to complete full-coverage detection through a probe scanning mechanism.

According to the requirements of different coverage scanning requirements of products without the need of different coverage of the products, production processes and detection speed of the ultrasonic detection, when a conveying device conveys pipes and bars, the proper screw pitch is required to be achieved by changing the eccentric angle of a roller, and the conventional ultrasonic flaw detector has the problem of inconvenient adjustment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a many specifications pipe rod ultrasonic flaw detector through to its institutional advancement, more convenient carry out eccentric angular adjustment.

In order to achieve the above purpose, the utility model discloses a technical scheme is: a multi-specification pipe and bar ultrasonic flaw detector comprises a rack, wherein an auxiliary roller way for assisting bar conveying is arranged on the rack, a detection box is arranged on the rack, a feed port and a discharge port for feeding and discharging bars are formed in the detection box, an ultrasonic detection unit for performing ultrasonic detection on the bars is arranged in the detection box, and a driving unit for driving a pipe and bar to move is arranged on the rack; the auxiliary roller way comprises an adjusting plate which is connected to the rack through a pivot, two ends of the adjusting plate are respectively hinged to one end of a first cross rod and one end of a second cross rod, a plurality of groups of roller assemblies are arranged between the first cross rod and the second cross rod at intervals, each roller assembly comprises a first roller mounting plate and a second roller mounting plate, two ends of the first roller mounting plate are respectively hinged to the first cross rod and the rack, and two ends of the second roller mounting plate are respectively hinged to the second cross rod and the rack; and the first roller mounting plate and the second roller mounting plate are provided with first rollers and second rollers which are distributed in a staggered manner.

Further, a first driving mechanism for driving the adjusting plate to rotate is arranged on the machine frame.

Further, the first driving mechanism comprises a screw rod assembly, a sliding piece on the screw rod assembly is hinged with the adjusting plate, and the sliding piece moves back and forth along the screw rod direction under the driving of the first driving part.

Further, be provided with the calibrated scale on the regulating plate, be provided with the pointer that corresponds with the calibrated scale in the frame.

Further, the driving unit comprises at least one bearing type transmission device which is matched with the roller assemblies to bear the bars together, a pressing transmission device which is matched with the bearing type transmission device is arranged on the bearing type transmission device, and the bars placed on the bearing type transmission device are compressed and driven to rotate.

The pressing transmission device comprises a pressing shell, a driving shaft is arranged at the upper end of the pressing shell, a vertical support is arranged on the rack, a third bearing seat for placing the driving shaft is arranged on the vertical support, and one end of the driving shaft is connected with a driving motor; a driving cylinder is hinged on the vertical support, and a piston rod of the driving cylinder is hinged with the upper end of the lower pressing shell; the lower extreme of pushing down the casing is provided with to articulate has a pinch roller seat, be provided with on the pinch roller seat and follow its self axis pivoted minor axis, fixed pinch roller and the follow belt pulley of being provided with on the minor axis, be provided with main belt pulley in the drive shaft, be provided with the belt between main belt pulley and the follow belt pulley.

Furthermore, a locking piece is arranged on the pressing wheel seat, and the locking piece is adjusted to fix the pressing wheel seat or loosen the pressing machine shell; and a poke rod extending outwards is arranged on the pressing wheel seat.

The bearing type transmission device comprises a first base plate fixed on a rack, a transmission base plate is arranged above the first base plate, and a height adjusting structure for driving the transmission base plate to move up and down is arranged on the first base plate; the transmission substrate is hinged to a plurality of bearing wheel seats, each bearing wheel seat is provided with a bearing wheel, the bearing wheels on two bearing wheel seats form a bearing point for placing a bar, two bearing wheel seats of the same bearing point are hinged through a first connecting rod, a second connecting rod is arranged between the two bearing points, and two ends of the second connecting rod are respectively hinged to any one bearing wheel seat of the two bearing points; and a synchronous driving mechanism is arranged on the transmission substrate, and the third connecting rod drives the bearing wheel to synchronously rotate.

Further, the height adjusting structure comprises an adjusting base fixed on the second substrate, a screw rod arranged along the vertical direction penetrates through the adjusting base, one end of the screw rod is fixedly connected with the transmission substrate, and the other end of the screw rod penetrates through the second substrate; the adjusting base is also provided with a limiting open slot, and an adjusting nut sleeved on the screw rod is arranged in the limiting open slot; a locking rod for locking the height of the screw rod is arranged on one side of the adjusting base, and a locking pin capable of being abutted to the screw rod is arranged at one end of the locking rod; and one side of the adjusting base is fixedly connected with a locking nut sleeved on the locking rod.

Further, the ultrasonic detection unit comprises a first group of ultrasonic detection mechanisms and a second group of ultrasonic detection mechanisms; wherein:

the first group of ultrasonic detection mechanisms comprise first ultrasonic fixing seats diagonally arranged on the detection box, and two first ultrasonic fixing seats are respectively used for detecting bars at the feed port and the discharge port;

the ultrasonic detection mechanism of second group is including the fixed location mounting panel that sets up at the detection case middle part, the lower extreme of location mounting panel is provided with the gyro wheel that compresses tightly the rod, the second ultrasonic wave fixing base that can move about on the location mounting panel about, be provided with the second ultrasonic transducer who detects the rod on the second ultrasonic wave fixing base.

The box body is internally provided with a roller assembly which corresponds to the first ultrasonic probe and is used for bearing the bar, and a bearing type transmission device which corresponds to the second ultrasonic probe and is used for bearing the bar. When the device is used, the different pipe diameters of the bars are detected by the second ultrasonic probe if the pipe diameters are small, and the first ultrasonic probe is detected if the pipe diameters are large (the bearing type transmission device needs to be detached at the moment), so that the bars with different specifications are detected.

Compared with the prior art, the utility model discloses a first gyro wheel, second gyro wheel deflection angle on the regulating apparatus can be unified to the regulating plate, make it can satisfy the demand of placing of different specification rods. The angle of the bearing wheel on the driving unit can be synchronously adjusted, the adjustment is convenient, the device can adapt to the placement of tubes and bars with different specifications and different specifications, and the deflection angle of the driven pressing wheel can be adjusted simultaneously, so that the device is more beneficial to the transmission of the bars.

Drawings

Fig. 1 is a perspective view of the embodiment of the present invention.

Fig. 2 is the schematic view of the placement state of the auxiliary roller way in the embodiment of the present invention.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a partially enlarged view of the area a of fig. 2.

Fig. 5 is a perspective view of a roller assembly according to an embodiment of the present invention.

Fig. 6 is a perspective view of the driving unit installed on the vertical bracket according to the embodiment of the present invention.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a rear view of fig. 7.

Fig. 9 is a perspective view of the load-bearing transmission device according to the embodiment of the present invention.

Fig. 10 is a rear view of fig. 9.

Fig. 11 is a perspective view of an ultrasonic detection unit according to an embodiment of the present invention.

Fig. 12 is a top view of fig. 11.

Fig. 13 is a perspective view of the second group of ultrasonic detection units in fig. 11.

Fig. 14 is a front view of fig. 13.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Examples

Referring to fig. 1, the ultrasonic flaw detector for the multi-specification pipes and bars in the embodiment includes a rack 1, wherein auxiliary roller tables 4 distributed along an X-axis direction are arranged on the rack 1 and used for assisting in conveying the bars; be provided with detection case 2 in the frame 1, the last feed inlet 21 and the discharge gate 22 that supplies the rod feeding, the ejection of compact that have of detection case 2, be provided with the ultrasonic detection unit 3 that carries out ultrasonic detection to the rod in the detection case 2, be provided with the drive unit 5 that the drive tube stick removed in the frame 1.

As shown in fig. 2 to 4, the auxiliary roller table 4 includes a plurality of sets of roller assemblies 45 spaced apart from each other, a first cross bar 41 and a second cross bar 42 are disposed on two sides of the frame 1 and disposed along the X-axis direction, an adjusting plate 43 is disposed on the frame 1, the adjusting plate 43 is of a triangle-like structure, the adjusting plate 43 has three hinge points (named as a first hinge point 431, a second hinge point 432, and a third hinge point 433 for descriptive purposes), the three hinge points are distributed in a triangle structure, preferably in an isosceles triangle structure, and a pivot point (named as a first pivot point 434 for descriptive purposes) pivotally connected to the frame 1 is further disposed on the adjusting plate 43, such that the adjusting plate 43 can rotate along the first pivot point. Wherein: the first hinge point 431 is hinged to one end of the first cross bar 41 through a connecting block, the second hinge point 432 is connected to one end of the second cross bar 42 through a pin, and the first pivot 434 is connected to the frame 1 through a pin.

A first driving mechanism 44 is disposed on the frame 1 for driving the adjusting plate 43 to rotate along the first pivot 434. Specifically, the first driving mechanism 44 includes a screw rod assembly 441 distributed along the Z-axis direction, and a sliding member 4411 on the screw rod assembly 441 is driven by the first driving portion 442 to move back and forth along the Z-axis direction, wherein the sliding member 4411 is connected to the third hinge point 433 by a pin.

The lead screw assembly 441 in this embodiment is a conventional lead screw assembly, and includes a lead screw 4412, copper nuts sleeved on the lead screw 4412, a bearing frame 4413 located at two ends of the lead screw 4412 for fixing, and a sliding member 4411 fixedly connected to the copper nuts.

The first driving portion 442 in this embodiment includes a first transmission shaft 4421, first bearing seats 4422 are disposed at two ends of the first transmission shaft 4421, a hand wheel 4423 is fixedly mounted at one end of the first transmission shaft 4421, a first gear 4424 is fixedly disposed on the first transmission shaft 4421, a second gear 4414 is disposed on a lead screw 4412 of the lead screw assembly, and the first gear 4424 and the second gear 4414 are connected by a chain, so that a person manually rotates the hand wheel 4423 to rotate the sliding member 4411. Besides the above method, the first driving part may also be driven by other methods, such as directly driving by a hand wheel or a servo motor, and the rotation of the adjusting plate can be realized.

In order to understand the rotation range of the adjusting plate, the adjusting plate 43 is provided with a dial, and the frame 1 is provided with a pointer corresponding to the dial, so that the adjustment of the angle of the adjusting plate by field personnel is facilitated.

Referring to fig. 5, the roller assembly 45 includes a first substrate 451 fixed on the frame 1, a first roller mounting plate 452 and a second roller mounting plate 453 are disposed on the first substrate 451, a first roller base 454 is fixed on the first roller mounting plate 452, a second roller base 455 is fixed on the second roller mounting plate 453, a first roller 456 is disposed on the first roller base 454, a second roller 457 is disposed on the second roller base 455, the first roller 456 and the second roller 457 are distributed in a staggered manner, and the bar material is disposed at a staggered corner between the first roller 456 and the second roller 457. In this embodiment, one end of the first roller mounting plate 452 is hinged to the first cross bar 41 through a pin, and the other end of the first roller mounting plate 452 is hinged to the first substrate 451 through a pin; one end of the second roller mounting plate 453 is hinged to the second cross bar 42 by a pin, and the other end of the second roller mounting plate 453 is hinged to the first base plate 451 by a pin.

Through the above structural design, when the angle of the adjusting plate 43 is adjusted, the first cross bar 41 and the second cross bar 42 are driven to move back and forth, and further the first roller mounting plate 452 and the second roller mounting plate 453 are driven to rotate synchronously, so that the deflection angles of the first roller 456 and the second roller 457 are adjusted.

As shown in fig. 6 to 8, the driving unit 5 includes at least one bearing type transmission device 51, and the bearing type transmission device 51 is placed on the auxiliary roller table 4 and cooperates with the roller assembly 43 to bear the bar material; the downward pressing transmission device 52 used in cooperation with the bearing type transmission device 51 compresses the bars placed on the bearing type transmission device 51 and drives the bars to rotate.

Specifically, the vertical supports 6 are arranged on the frame 1 at intervals, the downward-pressing transmission device 52 is placed in the gap between the two vertical supports 6, the downward-pressing transmission device 52 comprises a downward-pressing machine shell 521, two sides of the downward-pressing machine shell 521, which are close to the vertical supports 6, are respectively provided with a second bearing block 522, and a driving shaft 523 is arranged on the two second bearing blocks 522; the vertical bracket 6 is provided with a third bearing seat 524, and the driving shaft 523 is disposed on the third bearing seat 524. The vertical bracket 6 is provided with a first supporting plate 61, the first supporting plate 61 is hinged with one end of the driving cylinder 62, and the upper end of the lower pressing machine shell 521 is hinged with the other end of the driving cylinder 62, so that the lower pressing machine shell 521 is driven by the driving cylinder 62 to turn up and down along the driving shaft.

A driving motor (not shown in the figure) is arranged on the vertical bracket 6, the driving motor is connected with one end of the driving shaft 523 through a coupler, and the driving shaft 523 rotates along the axis of the driving motor. The driving shaft 523 is provided with a main belt pulley 525, the lower end of the lower pressing shell 521 is hinged with a pressing wheel seat 526, the pressing wheel seat 526 is provided with a locking part similar to a bolt, and the locking part is manually adjusted to fix or loosen the lower pressing shell 521 on the pressing wheel seat 526. The pressing wheel seat 526 is provided with a poke rod 527 extending outwards, so that field personnel can adjust the deflection angle of the pressing wheel seat 526 conveniently. Wherein, a dial is arranged on the pressing shell 521, and a corresponding pointer is arranged on the pressing wheel seat 526, which is convenient for field personnel to know the deflection angle.

A pair of bearings is embedded in the pressing wheel seat 526, and the short shaft is arranged on the bearings so as to rotate along the axis of the short shaft. The short shaft is fixedly provided with a pinch roller 529 and a driven pulley 528, and a belt is arranged between the main pulley 525 and the driven pulley 528, so that the pinch roller 529 can be driven to rotate under the driving of a driving motor. In the embodiment, a tension wheel is arranged between the main belt pulley and the secondary belt pulley and is fixed on the lower pressing shell through a corresponding tension wheel seat.

The bearing type transmission device 51 comprises a second substrate 511 fixed on the frame 1, a transmission substrate 512 is arranged above the second substrate 511, and a height adjusting structure 513 driving the transmission substrate 512 to move up and down is arranged on the second substrate 511. As shown in fig. 9 and 10, the height adjusting structure 513 includes an adjusting base 5131 fixed on the second substrate 511, a screw 5132 is inserted into the adjusting base 5131 and arranged along the vertical direction, one end of the screw 5132 is fixedly connected to the transmission substrate 512, and the other end is inserted into the second substrate 511. The adjusting base 5131 is further provided with a limiting slot, and an adjusting nut 5133 sleeved on the screw rod is arranged in the limiting slot. When the adjusting nut 5133 is rotated, the screw 5132 moves up and down along the adjusting nut 5133, and then the transmission substrate 512 is driven to move up and down. One side of the adjusting base 5131 is provided with a locking rod 5134 for locking the height of the screw, and one end of the locking rod 5134 is provided with a locking pin which can be abutted to the screw. One side of the adjusting base 5131 is fixedly connected with a locking nut 5135 sleeved on the locking rod.

A plurality of carrier wheel seats 514 (four in this embodiment) are hinged on the transmission base plate 512, and carrier wheels 515 (one on each carrier wheel seat) are hinged on the carrier wheel seats 514. The bearing wheels on the two bearing wheel seats form a bearing point for placing the bar, and the two bearing wheel seats on the same bearing point are hinged through a first connecting rod 516, so that the bearing wheels on the same bearing point synchronously rotate. In order to enable the bearing wheels on the two bearing points to synchronously rotate, a second connecting rod 517 is arranged between the two bearing points, and two ends of the second connecting rod 517 are respectively hinged with any one bearing wheel seat of the two bearing points. A synchronous driving mechanism 519 is disposed on the transmission substrate 512, and the third connecting rod 518 drives the carrier wheel to rotate synchronously.

The synchronous driving mechanism 519 in this embodiment adopts a conventional screw rod assembly, a hand wheel is provided at one end of the screw rod, a limit groove 5191 for the sliding member to move is provided on the transmission substrate, one end of the third connecting rod 518 is hinged on the sliding member, and the other end of the third connecting rod 518 is hinged on the nearest bearing wheel seat. After the field personnel manually adjust the hand wheel, the sliding part can be driven to move along the limiting groove, and the bearing wheel seats on the bearing points are driven to synchronously rotate at different angles through the third connecting rod.

In order to facilitate field personnel to know the position of the deflection angle, a dial is arranged on the transmission substrate on the periphery of the limiting groove, and a pointer corresponding to the dial is arranged on the third connecting rod.

When the device is used, the bar is placed on the bearing point, the lower press shell 521 is driven by the driving cylinder 62 to turn downwards, so that the pressing wheel 529 is pressed on the bar. And starting the driving motor and driving the pinch roller to rotate so as to realize the rotation of the bar.

Referring to fig. 11 to 14, the ultrasonic detection unit 3 includes two sets of ultrasonic detection mechanisms, where the first set of ultrasonic detection mechanism includes a first ultrasonic fixing seat 301 diagonally disposed on the detection box 2, a roller assembly 302, 303 (the structure of the roller assembly 302, 303 is the same as that of fig. 5) is disposed in the detection box 2, and is respectively located at the feeding port 21 and the discharging port 22, and is configured to bear the rod material, and first ultrasonic probes are disposed on the first ultrasonic fixing seats 301 diagonally disposed on the two sides, and are configured to detect the rod material on the roller assembly 302, 303 respectively.

The first ultrasonic fixing seat 301 is installed on a second adjusting mechanism capable of adjusting the distance in the Z-axis direction and the distance in the Y-axis direction, the second adjusting mechanism comprises a first transverse plate 310 fixed on the detection box 2, a screw rod assembly is arranged on the first transverse plate 310 and adopts a conventional screw rod assembly, a hand wheel 311 is arranged at one end of the screw rod assembly, a first vertical plate 312 is fixedly arranged on a sliding piece of the screw rod assembly, a conventional screw rod assembly is also arranged on the first vertical plate 312, and a hand wheel 313 is arranged at the upper end of the screw rod assembly. The slider of the screw assembly is provided with a second cross plate 314, and the first ultrasonic fixing seat 301 is fixed on the second cross plate 314.

The second group of ultrasonic detection mechanism comprises a positioning mounting plate 31, the lower end of the positioning mounting plate 31 is provided with a plurality of positioning holes 311 which are transversely placed, two roller mounting seats 32 are arranged below the positioning mounting plate 31, rollers 33 are arranged on the roller mounting seats 32, and bolts fix the roller mounting seats 32 on the positioning mounting plate 31 through the positioning holes. Two rollers 33 are respectively located at two sides of the positioning mounting plate 31 and are distributed in a staggered manner. The positioning and mounting plate 31 is provided with a fixing column 34, and the fixing column 34 is mounted on a beam frame which is fixed on the machine frame 1. Be provided with two first adjustment mechanism that the structure is the same on the both sides face of location mounting panel 31, be provided with second ultrasonic wave fixing base 35 that can move about, from top to bottom on the first adjustment mechanism, be provided with the second ultrasonic probe 36 that detects the rod on the second ultrasonic wave fixing base 35. Wherein the detection box 2 is provided with carrying type transmission devices 304, 305 for placing the bars, said carrying type transmission devices 304, 305 are identical to the structure of fig. 9.

The two groups of ultrasonic detection mechanisms are used for respectively detecting according to the pipe diameter of the bar, and when the pipe diameter of the bar is large, the first group of ultrasonic detection mechanisms is used for detecting; when the pipe diameter of the bar is small, a second group of ultrasonic detection mechanisms is adopted for detection, and the bearing type transmission devices 304 and 305 need to be detached at the moment.

The second ultrasonic wave fixing seat 35 includes a first clamping block and a second clamping block which can be fixedly connected by a bolt, and a cylindrical cavity for fixing the ultrasonic probe is arranged between the first clamping block and the second clamping block.

First adjustment mechanism is including adjusting diaphragm 37, be provided with horizontally adjustment groove 371 on adjusting diaphragm 37, the one end of ultrasonic wave fixing base 35 is embedded into adjustment groove 371, is provided with the first screw thread passageway that switches on with adjustment groove 371 on ultrasonic wave fixing base 35, be provided with first adjusting bolt 351 rather than threaded connection in the first screw thread passageway, the elasticity of first adjusting bolt 351 is adjusted to the manual work, makes ultrasonic wave fixing base 35 fix in the adjustment groove or loosen with the adjustment groove, can slide in the adjustment groove.

The first adjusting mechanism further comprises a vertically arranged screw rod assembly, and the screw rod assembly adopts a conventional screw rod assembly. One end of the screw rod 382 is provided with a hand wheel 381, and the back surface of the adjusting transverse plate 37 is fixed on the sliding piece 383. In this embodiment, in order to stabilize the vertical movement of the adjustment transverse plate 37, the positioning and mounting plate 31 is provided with a guide post 391, the guide post 391 is distributed parallel to the screw rod 382, and the guide post 391 is provided with a guide sleeve 392, and the guide sleeve 392 is fixed on the adjustment transverse plate 37 by a bolt. In order to fix the upper and lower positions of the adjusting transverse plate 37, a second threaded passage abutting against the guide post is arranged on the guide sleeve 392, a second adjusting bolt 393 in threaded connection with the second threaded passage is arranged in the second threaded passage, and the tightness of the second adjusting bolt is manually adjusted to fix or loosen the position of the adjusting transverse plate.

The ultrasonic flaw detector in this embodiment has the switch board for drive actuating cylinder, driving motor operation on the controlgear, above-mentioned implementation adopts the technical means that electric field generally adopted can, belongs to the prior art category.

The protection points of the application document are as follows: the deflection angles of the first roller and the second roller on the equipment can be uniformly adjusted through the adjusting plate, so that the equipment can meet the requirements of placing pipe bars (referred to as bars) with different specifications. The angle of the bearing wheel on the driving unit can be synchronously adjusted, the adjustment is convenient, the device can adapt to the placement of tubes and bars with different specifications and different specifications, and the deflection angle of the driven pressing wheel can be adjusted simultaneously, so that the device is more beneficial to the transmission of the bars.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (10)

1. A multi-specification pipe and bar ultrasonic flaw detector comprises a rack, wherein an auxiliary roller way for assisting bar conveying is arranged on the rack, a detection box is arranged on the rack, a feed port and a discharge port for feeding and discharging bars are formed in the detection box, an ultrasonic detection unit for performing ultrasonic detection on the bars is arranged in the detection box, and a driving unit for driving a pipe and bar to move is arranged on the rack; the method is characterized in that: the auxiliary roller way comprises an adjusting plate which is connected to the rack through a pivot, two ends of the adjusting plate are respectively hinged to one end of a first cross rod and one end of a second cross rod, a plurality of groups of roller assemblies are arranged between the first cross rod and the second cross rod at intervals, each roller assembly comprises a first roller mounting plate and a second roller mounting plate, two ends of the first roller mounting plate are respectively hinged to the first cross rod and the rack, and two ends of the second roller mounting plate are respectively hinged to the second cross rod and the rack; and the first roller mounting plate and the second roller mounting plate are provided with first rollers and second rollers which are distributed in a staggered manner.

2. The multi-gauge tube and bar ultrasonic flaw detector of claim 1, wherein: a first driving mechanism for driving the adjusting plate to rotate is arranged on the rack.

3. The multi-gauge tube and bar ultrasonic flaw detector of claim 2, wherein: the first driving mechanism comprises a screw rod assembly, a sliding piece on the screw rod assembly is hinged with an adjusting plate, and the sliding piece moves back and forth along the screw rod direction under the driving of a first driving part.

4. The multi-gauge tube and bar ultrasonic flaw detector of claim 1, wherein: be provided with the calibrated scale on the regulating plate, be provided with the pointer that corresponds with the calibrated scale in the frame.

5. The multi-gauge tube and bar ultrasonic flaw detector of claim 1, wherein: the drive unit comprises at least one bearing type transmission device which is matched with the roller assemblies to bear the bars together, a pressing transmission device which is used in a matched mode is arranged on the bearing type transmission device, and the bars placed on the bearing type transmission device are compressed and driven to rotate.

6. The multi-gauge tube and bar ultrasonic flaw detector of claim 5, wherein: the pressing transmission device comprises a pressing machine shell, a driving shaft is arranged at the upper end of the pressing machine shell, a vertical support is arranged on the machine frame, a third bearing seat for placing the driving shaft is arranged on the vertical support, and one end of the driving shaft is connected with a driving motor; a driving cylinder is hinged on the vertical support, and a piston rod of the driving cylinder is hinged with the upper end of the lower pressing shell; the lower extreme of pushing down the casing is provided with to articulate has a pinch roller seat, be provided with on the pinch roller seat and follow its self axis pivoted minor axis, fixed pinch roller and the follow belt pulley of being provided with on the minor axis, be provided with main belt pulley in the drive shaft, be provided with the belt between main belt pulley and the follow belt pulley.

7. The multi-gauge tube and bar ultrasonic flaw detector of claim 6, wherein: the pressing wheel seat is provided with a locking piece, and the locking piece is adjusted to fix or loosen the pressing shell; and a poke rod extending outwards is arranged on the pressing wheel seat.

8. The multi-gauge tube and bar ultrasonic flaw detector of claim 5, wherein: the bearing type transmission device comprises a second substrate fixed on the rack, a transmission substrate is arranged above the second substrate, and a height adjusting structure for driving the transmission substrate to move up and down is arranged on the second substrate; the transmission substrate is hinged to a plurality of bearing wheel seats, each bearing wheel seat is provided with a bearing wheel, the bearing wheels on two bearing wheel seats form a bearing point for placing a bar, two bearing wheel seats of the same bearing point are hinged through a first connecting rod, a second connecting rod is arranged between the two bearing points, and two ends of the second connecting rod are respectively hinged to any one bearing wheel seat of the two bearing points; and a synchronous driving mechanism is arranged on the transmission substrate, and the third connecting rod drives the bearing wheel to synchronously rotate.

9. The multi-gauge tube and bar ultrasonic flaw detector of claim 8, wherein: the height adjusting structure comprises an adjusting base fixed on the second base plate, a screw rod arranged in the vertical direction penetrates through the adjusting base, one end of the screw rod is fixedly connected with the transmission base plate, and the other end of the screw rod penetrates through the second base plate; the adjusting base is also provided with a limiting open slot, and an adjusting nut sleeved on the screw rod is arranged in the limiting open slot; a locking rod for locking the height of the screw rod is arranged on one side of the adjusting base, and a locking pin capable of being abutted to the screw rod is arranged at one end of the locking rod; and one side of the adjusting base is fixedly connected with a locking nut sleeved on the locking rod.

10. The multi-gauge tube and bar ultrasonic flaw detector of claim 1, wherein: the ultrasonic detection unit comprises a first group of ultrasonic detection mechanisms and a second group of ultrasonic detection mechanisms; wherein:

the first group of ultrasonic detection mechanisms comprise first ultrasonic fixing seats diagonally arranged on the detection box, and two first ultrasonic fixing seats are respectively used for detecting bars at the feed port and the discharge port;

the ultrasonic detection mechanism of second group is including the fixed location mounting panel that sets up at the detection case middle part, the lower extreme of location mounting panel is provided with the gyro wheel that compresses tightly the rod, the second ultrasonic wave fixing base that can move about on the location mounting panel about, be provided with the second ultrasonic transducer who detects the rod on the second ultrasonic wave fixing base.

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