CN111781273A

CN111781273A - Nondestructive testing frame for arc-shaped surface

Info

Publication number: CN111781273A
Application number: CN202010808902.3A
Authority: CN
Inventors: 蒋国平; 肖三霞; 李林
Original assignee: Fujian Jiangxia University
Current assignee: Fujian Jiangxia University
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-10-16

Abstract

The invention discloses an arc-shaped surface nondestructive testing frame, which relates to the field of nondestructive testing and comprises a base, wherein a moving mechanism is arranged at the top end of the base, a moving motor is arranged at one side of the moving mechanism at the top end of the base, a hanging plate is connected at one side of the moving mechanism, a pressure rod is connected at the bottom end of the hanging plate, a plurality of groups of supporting mechanisms are arranged at the top end of the base below the pressure rod, the invention enables the pressure plate to fix two sides of an arc-shaped plate through the arranged supporting mechanisms and the pressing mechanism, enables the arc-shaped plate to be clamped between a rubber cushion and the pressure plate, then sufficient hydraulic oil is introduced into the supporting mechanisms, so as to push a plurality of groups of supporting plates to move out from a hydraulic groove, the supporting plates at different positions are different from the intersection positions of the arc-shaped plate when ascending, the arc-shaped plate limits the supporting plates through the pressure, so that the plurality of groups of supporting plates form the shape of the bottom end of the arc-shaped plate.

Description

Nondestructive testing frame for arc-shaped surface

Technical Field

The invention relates to the field of nondestructive testing, in particular to an arc-shaped surface nondestructive testing frame.

Background

The nondestructive testing is a method for inspecting and testing the structure, the property, the state, the type, the property, the quantity, the shape, the position, the size, the distribution and the change of the defect inside and on the surface of a test piece by taking a physical or chemical method as a means and by means of modern technology and equipment and by means of the change of the thermal, acoustic, optical, electrical, magnetic and other reactions caused by the existence of the internal structure abnormality or the defect of a material on the premise of not damaging or not influencing the service performance of the tested object and not damaging the internal tissue of the tested object, the nondestructive testing is an essential effective tool for industrial development, reflects the industrial development level of a country to a certain extent, and has recognized importance of the nondestructive testing, namely four testing means are mainly used for ray inspection (RT), Ultrasonic Testing (UT), magnetic particle testing (MT) and liquid Penetration Testing (PT), wherein the testing means is commonly used in the ultrasonic testing, ultrasonic testing passes through transmitting probe to the component surface through couplant transmission ultrasonic wave, and the ultrasonic wave meets different interfaces and will have different reflection signal (echo) when the component is inside to be propagated, utilizes the time difference of different reflection signal transmission to the probe, can inspect the inside defect of component, when carrying out nondestructive test, need to adopt the test stand to fix the work piece to partial arc work piece when examining.

Present detection frame detects time measuring to the arc work piece on the market today, can not make ultrasonic probe closely laminate with the surface of arc work piece for detection effect variation and work piece volume are too big, and test probe can not remove, thereby can not wholly detect the work piece, and the availability factor is low, and does not have fine anchor clamps to fix the work piece of different radians, and the commonality is poor.

Disclosure of Invention

The invention aims to: in order to solve the problems that a probe is inconvenient to be attached to a workpiece, the probe is inconvenient to move, and the workpiece is not fixed stably enough, the nondestructive testing frame for the arc-shaped surface is provided.

In order to achieve the purpose, the invention provides the following technical scheme: a nondestructive testing frame for an arc surface comprises a base, wherein a moving mechanism is arranged at the top end of the base, a moving motor is arranged at one side, located on the moving mechanism, of the top end of the base, a hanging plate is connected to one side of the moving mechanism, and the moving motor is connected with the hanging plate in a sliding mode, so that the hanging plate can move along the radial direction; the bottom end of the hanging plate is connected with a pressing rod, a plurality of groups of supporting mechanisms are arranged at the top end of the base below the pressing rod, an arc-shaped plate is arranged between the pressing rod and the supporting mechanisms, and pressing mechanisms are arranged at two ends of the supporting mechanisms in the base; the two sides of the lower end of the pressing rod are provided with moving wheels, the pressing rod is connected with the upper end face of the arc plate in a sliding mode through the moving wheels, and the bottom end of the pressing rod is located among the moving wheels and provided with a detection probe.

Preferably, the top of base has been seted up multiunit riser, and is a set of the sliding door has been seted up to the inner wall of riser, the top of base is located the multiunit the cushion has been seted up between the supporting mechanism.

Preferably, the top of riser is located moving mechanism's inside and has seted up first mount, the inside one end of keeping away from first mount of riser has seted up the second mount, the rotation motor is installed to one side of first mount, the output of rotating the motor runs through the rotation motor and extends to one side of rotating the motor and is connected with the pivot, the multiunit edge has been seted up in the outside of pivot.

Preferably, the one end of mobile motor is connected with the screw rod, the screw rod is located a set of the top of riser, the gag lever post has been seted up on a set of riser top, screw rod and gag lever post set up about the pivot symmetry.

Preferably, the link plate is internally provided with a bearing, the bearing is connected with the rotating shaft in a sliding manner through an inner wall, the outer wall of the bearing is provided with a groove, the bearing is rotatably connected with the link plate through the groove, and the two sides of the bottom end of the bearing, which are positioned on the link plate, are provided with extension plates.

Preferably, a block section of thick bamboo has been seted up to the bottom of depression bar, just between a block section of thick bamboo welding and the multiunit extension board, the location inserted bar has been seted up to the inside of extension board, the depression bar passes through a location inserted bar and a block section of thick bamboo spacing connection, return spring has been seted up in the outside of location inserted bar, the depression bar passes through return spring and a block section of thick bamboo sliding connection.

Preferably, every group the top of supporting mechanism is located the inside of base and has seted up multiunit hydraulic pressure groove, and every group the backup pad has all been seted up to the inside in hydraulic pressure groove, the backup pad all runs through the top of base and extends to the top of base, every group the rubber head has all been seted up to the top of backup pad, the bottom fixed connection of rubber head and arc is passed through to the backup pad, hydraulic pressure pipe has been seted up to one side of supporting mechanism, and the hydraulic pressure pipe runs through the inner wall of base and extends to the outside of base.

Preferably, every group hold-down mechanism's top has all seted up the pressure strip, the arc pad has all been seted up to the bottom of pressure strip, the arc pad is located the cushion directly over.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention adopts the compression bar, the moving wheel, the clamping cylinder, the return spring and the positioning inserted bar, after the arc-shaped plate is fixed on the detection frame, the return spring in the clamping cylinder pushes the pressure lever to move downwards, the pressure lever is forced to push a plurality of groups of moving wheels to be attached to the surface of the arc-shaped plate, so that the detection probe can be closely attached to the surface of the arc-shaped plate, when the arc-shaped plate is detected, the rotating shaft drives a plurality of groups of extension plates to rotate through the bearing, the extension plates drive the lower pressure rods to rotate, so that the detection probe swings left and right above the arc-shaped plate, and the pressure bar continuously moves up and down under the thrust of gravity and the return spring, so that the movable wheel can be always attached to the surface of the arc-shaped plate, the detection probe can not be separated from the arc-shaped plate, therefore, the detection probe can keep the same distance with the arc-shaped plate, the detection effect and quality are improved, and the problem that the probe is inconvenient to attach to a workpiece is effectively solved;

2. through the arranged moving mechanism, the moving motor, the screw rod and the limiting rod, when the arc-shaped plate needs to be detected, the rotating motor is started, the output end of the rotating motor drives the rotating shaft to rotate, the rotating shaft drives the bearing to rotate through the edge arranged on the outer side, the bearing drives the plurality of groups of extension plates arranged on the outer side to rotate, the bottom end pressure rod is driven to rotate through the extension plates, the detection probe at the bottom end of the pressure rod can carry out arc scanning on the arc-shaped plate, after the arc-shaped plate is detected completely, the rotating motor is stopped, the moving motor is started, the output end of the moving motor drives the screw rod to rotate, the screw rod pushes the hanging plate to slide above the vertical plate, the hanging plate drives the bearing to move along the rotating shaft, the detection probe is moved to the position where the arc-shaped plate is not detected, then the rotating, the method has the advantages that the undetected position of the arc-shaped plate is detected, the process is repeated for multiple times until the arc-shaped plate is completely detected, the detection probe can be conveniently moved, manual adjustment is not needed, the use efficiency is improved, and the problem that the probe is inconvenient to move is effectively solved;

3. through the supporting mechanism and the pressing mechanism, when the arc-shaped plate is fixed, the sliding door is firstly opened, the arc-shaped plate is placed in the detection frame, the bottom end of the arc-shaped plate is attached to the rubber mat, then the pressing mechanism is started, the air cylinder at the bottom end of the pressing mechanism drives the pressing plate to move downwards, the pressing plate is enabled to fix the two sides of the arc-shaped plate, the arc-shaped plate is clamped between the rubber mat and the pressing plate, sufficient hydraulic oil is introduced into the supporting mechanism, so that a plurality of groups of supporting plates are pushed to move out of the hydraulic groove, the supporting plates at different positions are different from the intersection positions of the arc-shaped plate when the supporting plate is lifted, the arc-shaped plate is limited by the pressure of the pressing plate until the supporting plates are contacted with the bottom end of the arc-shaped plate through the rubber heads arranged at the top end, the plurality of groups of supporting plates form the shape of, therefore, the detection frame can be fixedly installed on various arc-shaped plates, the universality of the detection frame is improved, the stability of the workpiece during installation is also improved, and the problem that the workpiece is not stable enough in fixation is effectively solved.

Drawings

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

FIG. 2 is a schematic top view of the support plate of the present invention;

FIG. 3 is a schematic cross-sectional view of the supporting mechanism of the present invention;

FIG. 4 is a schematic view of the pressing mechanism of the present invention;

FIG. 5 is a schematic view of the hanging plate mounting structure of the present invention;

FIG. 6 is a schematic view of a probe according to the present invention;

FIG. 7 is a schematic view of the installation structure of the pressure lever of the present invention;

fig. 8 is a schematic view of the bearing structure of the present invention.

In the figure: 1. a base; 101. a vertical plate; 102. sliding the door; 103. a rubber pad; 2. a moving mechanism; 201. a first fixing frame; 202. a second fixing frame; 203. rotating the motor; 204. a rotating shaft; 205. an edge; 3. a moving motor; 301. a screw; 302. a limiting rod; 4. hanging the plate; 401. a bearing; 402. a stretching plate; 403. A groove; 5. a hold-down mechanism; 501. a compression plate; 502. an arc-shaped pad; 6. a support mechanism; 601. a hydraulic tank; 602. a support plate; 603. a hydraulic tube; 604. a rubber head; 7. an arc-shaped plate; 8. a pressure lever; 801. A moving wheel; 802. detecting a probe; 803. a clamping cylinder; 804. a return spring; 805. and positioning the inserted rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, an arc surface nondestructive testing stand comprises a base 1, a moving mechanism 2 is arranged at the top end of the base 1, a moving motor 3 is installed at one side, located at the moving mechanism 2, of the top end of the base 1, a hanging plate 4 is connected to one side of the moving mechanism 2, a pressing rod 8 is connected to the bottom end of the hanging plate 4, a plurality of groups of supporting mechanisms 6 are installed at the top end of the base 1, located below the pressing rod 8, an arc plate 7 is arranged between the pressing rod 8 and the supporting mechanisms 6, and pressing mechanisms 5 are arranged at two ends, located at the supporting mechanisms 6, of the base 1.

Please refer to fig. 1 and fig. 3, the top end of the base 1 is provided with a plurality of sets of vertical plates 101, the inner wall of one set of vertical plates 101 is provided with a sliding door 102, the top end of the base 1 is located between the plurality of sets of supporting mechanisms 6 and is provided with a rubber pad 103, and the arc-shaped plate 7 can be supported through the rubber pad 103, so that the arc-shaped plate 7 can be buffered with the base 1 when being fixed, and the damage to the arc-shaped plate 7 is reduced.

Please refer to fig. 1 and fig. 5, a first fixing frame 201 is disposed inside the moving mechanism 2 at the top end of the vertical plate 101, a second fixing frame 202 is disposed at one end of the vertical plate 101 far away from the first fixing frame 201, a rotating motor 203 is installed at one side of the first fixing frame 201, an output end of the rotating motor 203 penetrates through the rotating motor 203 and extends to one side of the rotating motor 203 to be connected with a rotating shaft 204, a plurality of groups of edges 205 are disposed at the outer side of the rotating shaft 204, the rotating motor 203 is a variable speed motor, output of the rotating motor can perform reciprocating reverse rotation according to requirements, so as to drive the pressing rod 8 to swing, and the detecting probe 802 can perform comprehensive detection on the top end of.

Please refer to fig. 1 and fig. 3, one end of the moving motor 3 is connected with a screw 301, the screw 301 is located at the top end of a set of vertical plates 101, the top end of the set of vertical plates 101 is provided with a limit rod 302, the screw 301 and the limit rod 302 are symmetrically arranged about the rotating shaft 204, so that the screw 301 can push the hanging plate 4 to move, the position of the bearing 401 is changed through the hanging plate 4, the pressing rod 8 connected to the bottom end of the bearing 401 moves left and right, the position of the detection probe 802 is changed, and multi-position detection is conveniently performed on the top end of the arc plate.

Please refer to fig. 5 and 8, a bearing 401 is disposed inside the hanging plate 4, the bearing 401 is slidably connected to the rotating shaft 204 through an inner wall, a groove 403 is disposed on an outer wall of the bearing 401, the bearing 401 is rotatably connected to the hanging plate 4 through the groove 403, extending plates 402 are disposed on two sides of the hanging plate 4 at a bottom end of the bearing 401, so that the bearing 401 can rotate inside the hanging plate 4, and the rotating shaft 204 can drive the bearing 401 to rotate through a plurality of groups of edges 205 disposed on the outer wall.

Please refer to fig. 5, the bottom end of the pressing rod 8 is provided with a clamping cylinder 803, the clamping cylinder 803 is welded with the plurality of sets of extension plates 402, the extension plates 402 are provided with positioning insertion rods 805 inside, the pressing rod 8 is connected with the clamping cylinder 803 in a limiting manner through the positioning insertion rods 805, the outer side of the positioning insertion rods 805 is provided with return springs 804, and the pressing rod 8 is connected with the clamping cylinder 803 in a sliding manner through the return springs 804.

Please refer to fig. 5, the top end of each supporting mechanism 6 is located inside the base 1 and is provided with a plurality of hydraulic grooves 601, and each hydraulic groove 601 is provided with a supporting plate 602, the supporting plates 602 all penetrate through the top end of the base 1 and extend to the top of the base 1, the top end of each supporting plate 602 is provided with a rubber head 604, the supporting plates 602 are fixedly connected with the bottom end of the arc-shaped plate 7 through the rubber heads 604, one side of the supporting mechanism 6 is provided with a hydraulic pipe 603, and the hydraulic pipe 603 penetrates through the inner wall of the base 1 and extends to the outer side of the base 1.

Please refer to fig. 2 and fig. 4, the top end of each pressing mechanism 5 is provided with a pressing plate 501, the bottom end of the pressing plate 501 is provided with an arc pad 502, the arc pad 502 is located right above the rubber pad 103, the pressing plate 501 can fix the arc plate 7, so that the arc plate 7 is tightly attached to the rubber pad 103, and the arc pad 502 at the bottom end of the pressing plate 501 can reduce the extrusion on the top end of the arc plate 7 and reduce the damage on the arc plate 7.

Please refer to fig. 5 and fig. 6, the two sides of the pressing rod 8 are both provided with moving wheels 801, the pressing rod 8 is connected with the top end of the arc plate 7 through the moving wheels 801 in a sliding manner, the bottom end of the pressing rod 8 is located between the plurality of sets of moving wheels 801, and the detecting probe 802 is installed between the pressing rod 8 and the arc plate 7 through the moving wheels 801, so that the detecting probe 802 always keeps the same distance with the top end of the arc plate 7, and the detecting effect is maintained.

The working principle is as follows: firstly, the arc-shaped plate 7 is installed in a detection frame, the sliding door 102 is opened, the arc-shaped plate 7 is placed in the detection frame, the bottom end of the arc-shaped plate 7 is attached to the rubber mat 103, then the pressing mechanism 5 is started, the cylinder at the bottom end of the pressing mechanism 5 drives the pressing plate 501 to move downwards, so that the pressing plate 501 fixes two sides of the arc-shaped plate 7, the arc-shaped plate 7 is clamped between the rubber mat 103 and the pressing plate 501, then sufficient hydraulic oil is introduced into the supporting mechanism 6, so that a plurality of groups of supporting plates 602 are pushed to move out of the hydraulic groove 601, the supporting plates 602 at different positions are different from the intersection positions of the arc-shaped plate 7 when ascending, the arc-shaped plate 7 limits the supporting plates 602 through the pressure of the pressing plate 501, the supporting plates 602 are in contact with the bottom end of the arc-shaped plate 7 through rubber heads 604 arranged at the top ends, so that the plurality of the supporting plates 602 form the shape, therefore, various arc plates 7 can be fixedly installed, the universality of the detection frame is improved, and the stability of workpiece installation is also improved, after the arc plates 7 are fixed on the detection frame, the return spring 804 in the clamping cylinder 803 pushes the pressure lever 8 to move downwards, the pressure lever 8 is forced to push a plurality of groups of moving wheels 801 to be attached to the surface of the arc plate 7, so that the detection probe 802 can be closely attached to the surface of the arc plate 7, when the arc plate 7 is detected, the rotating motor 203 is started, the output end of the rotating motor 203 drives the rotating shaft 204 to rotate, the rotating shaft 204 drives the bearing 401 to rotate through the edge 205 arranged on the outer side, the bearing 401 drives a plurality of groups of extension plates 402 arranged on the outer side to rotate, the bottom pressure lever 8 is driven by the extension plates 402 to rotate, the detection probe 802 at the bottom end of the pressure lever 8 can scan the arc surface of the arc plate 7, and the pressure lever 8 continuously moves up and down under the thrust of, the movable wheel 801 can be always attached to the surface of the arc plate 7, the detection probe 802 cannot be separated from the arc plate 7, so that the detection probe 802 can keep the same distance with the arc plate 7, the detection effect and quality are improved, after one part of the arc plate 7 is detected, the motor 203 stops rotating, the motor 3 is started, the output end of the motor 3 drives the screw 301 to rotate, the screw 301 pushes the hanging plate 4 to slide above the vertical plate 101, the hanging plate 4 drives the bearing 401 to move along the rotating shaft 204, so that the detection probe 802 is moved to the position where the arc plate 7 is not detected, then the motor 203 is started again, the motor 203 outputs to drive the detection probe 802 to slide on the arc plate 7 again, so that the position where the arc plate 7 is not detected is detected, the process is repeated for multiple times until the arc plate 7 is completely detected, and the detection probe 802 can be conveniently moved, need not manual adjustment, improved the availability factor.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an arcwall face nondestructive test frame, includes base (1), its characterized in that: the lifting device is characterized in that a moving mechanism (2) is arranged at the top end of the base (1), a moving motor (3) is installed at one side, located on the moving mechanism (2), of the top end of the base (1), a hanging plate (4) is connected to one side of the moving mechanism (2), and the moving motor (3) is in sliding connection with the hanging plate (4) so that the hanging plate (4) can move along the radial direction; the bottom end of the hanging plate (4) is connected with a pressing rod (8), a plurality of groups of supporting mechanisms (6) are installed at the top end of the base (1) below the pressing rod (8), an arc-shaped plate (7) is arranged between the pressing rod (8) and the supporting mechanisms (6), and pressing mechanisms (5) are arranged at two ends of the supporting mechanisms (6) in the base (1); the utility model discloses a pressure bar, including depression bar (8), depression bar, arc (7), the both sides of depression bar (8) lower extreme have been seted up and have been removed wheel (801), depression bar (8) are through removing the up end sliding connection of wheel (801) and arc (7), the bottom of depression bar (8) is located the multiunit and removes and install between wheel (801) and detect probe (802).

2. The arcwall face nondestructive testing stand of claim 1, characterized in that: the top of base (1) has been seted up multiunit riser (101), and a set of sliding door (102) have been seted up to the inner wall of riser (101), the top of base (1) is located the multiunit cushion (103) have been seted up between supporting mechanism (6).

3. The arcwall face nondestructive testing stand of claim 2, characterized in that: first mount (201) have been seted up to the inside that the top of riser (101) is located moving mechanism (2), second mount (202) have been seted up to the one end that first mount (201) were kept away from to the inside of riser (101), rotation motor (203) is installed to one side of first mount (201), the output of rotation motor (203) runs through rotation motor (203) and extends to one side of rotating motor (203) and is connected with pivot (204), multiunit edge (205) have been seted up in the outside of pivot (204).

4. The arcwall face nondestructive testing stand of claim 3, characterized in that: the one end of mobile motor (3) is connected with screw rod (301), screw rod (301) are located a set of the top of riser (101), gag lever post (302) have been seted up on riser (101) top, screw rod (301) and gag lever post (302) set up about pivot (204) symmetry.

5. The arcwall face nondestructive testing stand of claim 4, characterized in that: bearing (401) have been seted up to link plate (4) inside, bearing (401) are through inner wall and pivot (204) sliding connection, recess (403) are seted up to the outer wall of bearing (401), bearing (401) are rotated with link plate (4) through recess (403) and are connected, extension board (402) have all been seted up to the both sides that the bottom of bearing (401) is located link plate (4).

6. The arcwall face nondestructive testing stand of claim 5, characterized in that: a block section of thick bamboo (803) has been seted up to the bottom of depression bar (8), just between a block section of thick bamboo (803) welding and multiunit extension board (402), location inserted bar (805) have been seted up to the inside of extension board (402), depression bar (8) are through location inserted bar (805) and a block section of thick bamboo (803) spacing connection, return spring (804) have been seted up in the outside of location inserted bar (805), depression bar (8) are through return spring (804) and a block section of thick bamboo (803) sliding connection.

7. The arcwall face nondestructive testing stand of claim 1, characterized in that: every group the top of supporting mechanism (6) is located the inside of base (1) and has seted up multiunit hydraulic pressure groove (601), and every group backup pad (602) have all been seted up to the inside of hydraulic pressure groove (601), backup pad (602) all run through the top of base (1) and extend to the top of base (1), every group rubber head (604) have all been seted up on the top of backup pad (602), bottom fixed connection of backup pad (602) through rubber head (604) and arc (7), hydraulic pressure pipe (603) have been seted up to one side of supporting mechanism (6), and hydraulic pressure pipe (603) run through the inner wall of base (1) and extend to the outside of base (1).

8. The arcwall face nondestructive testing stand of claim 2, characterized in that: every group pinch mechanism (5)'s top has all seted up pressure strip (501), arc pad (502) have all been seted up to the bottom of pressure strip (501), arc pad (502) are located directly over cushion (103).