Automatic centering guide device of wheel set magnetic particle flaw detector

Abstract

The utility model discloses an automatic centering guide device of a wheel set magnetic particle flaw detector, which relates to the technical field of wheel set flaw detection and comprises a mounting frame, a flaw detector body is fixedly connected to the middle of the inner side of the mounting frame, an adjusting mechanism is slidably connected to the lower side of the flaw detector body, and a positioning mechanism is fixedly connected to the front side of the mounting frame. And an attitude sensor is movably mounted on the upper side of the positioning mechanism. According to the automatic centering guide device for the wheel set magnetic particle flaw detector, the rollers are driven by the second electric push rod to quickly clamp a wheel set, the center between the two rollers is quickly aligned by virtue of the pressure sensor on the mechanism seat, the wheel set is directly placed among the four positioning rods, and the automatic centering guide device is simple in structure and convenient to operate. And then the first electric push rod drives the positioning rods to rotate so that the four positioning rods can make contact with the wheel pair, adjustment is convenient, operation and control are easy, the wheel pair is rapidly placed, and manual adjustment is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheelset flaw detection technical field, especially wheelset magnetic particle flaw detector automatic centering guiding device. BACKGROUND

[0002] In order to guarantee the safety of railway operation, flaw detection equipment plays a very important role. From the perspective of train structure, bogie is an important carrier for train operation, and wheelset is directly contacted with rail. Wheelset is worn due to track operation and bears the weight of train, so it is necessary to carry out flaw detection when the time limit is reached. Therefore, fluorescent wheelset magnetic particle flaw detector becomes the key equipment for detecting whether wheelset is good or not.

[0003] Chinese patent document CN203443920U discloses a wheelset magnetic particle flaw detector automatic centering device. The device uses upper cantilever and roller to detect the size of wheelset with different diameters, and transmits the detected physical quantity to transmission shaft through mechanical transmission, and the transmission shaft drives the movable connecting rod to pull the lower cantilever. When the diameter of wheelset is large, the lower cantilever moves up, and the other end of the lower cantilever lifts the pulley guide rod upward, and the pulley guide rod lifts the circumferential electrode upward through the vertical guide rail, so that the circumferential electrode is consistent with the center of wheelset shaft. The fluorescent wheelset magnetic particle flaw detector with the above device passes the circumferential current under the condition of magnetic charging, so that the magnetic field distribution is uniform, and the potential crack is displayed. The device not only meets the requirements of railway flaw detection process and quality, but also fully guarantees the safety of railway operation. One flaw detection machine can be used for detecting various types of wheelsets, saving detection cost, greatly improving the efficiency of flaw detection work and the stability and reliability of magnetizing current.

[0004] The existing technology has the following problems:

[0005] The device uses upper cantilever to drive roller to detect the center of wheelset shaft, but this form only sets roller on one side, which makes it difficult to place wheelset and needs manual adjustment of the position of roller to keep it on the upper side of wheelset, and the adjustment is complicated. SUMMARY

[0006] The utility model provides a wheelset magnetic particle flaw detector automatic centering guiding device to solve the problems in the above background technology.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] The utility model provides an automatic finding center guiding device of wheel set magnetic particle flaw detector, including the mount, the inside middle part of mount is fixedly connected with the flaw detector body, the downside of flaw detector body is slidably connected with the adjusting mechanism, the front side of mount is fixedly connected with the positioning mechanism, the upside of positioning mechanism is movably installed with the attitude sensor,

[0009] The positioning mechanism includes a mechanism plate, the rear side of the mechanism plate is fixedly connected to the front side of the mounting bracket, four rectangularly distributed positioning rods are rotatably connected to the front side of the mechanism plate near the left and right sides, four first electric push rods are fixedly connected to the rear side of the mechanism plate near the upper and lower sides, and the ends of the four first electric push rods away from the flaw detector body are fixedly connected with moving seats, the front side of the moving seat is slidably connected to the rear side of the positioning rod, and the lower side of the attitude sensor is movably installed on the upper side of the mechanism plate near the middle part.

[0010] Preferably, the adjusting mechanism includes a moving frame, the lower side of the mounting bracket is slidably connected to the upper side of the moving frame, the upper side of the moving frame is fixedly connected with two first hydraulic rods symmetrically distributed on the left and right sides, and the ends of the first hydraulic rods away from each other are fixedly connected to the lower side of the mounting bracket near the middle part of the left and right sides, four rectangularly distributed universal wheels are rotatably connected to the lower side of the moving frame near the front and rear sides, and four rectangularly distributed second hydraulic rods are fixedly connected to the upper side of the moving frame near the left and right sides.

[0011] Preferably, the lower side of each of the four second hydraulic rods is fixedly connected with a ball shaft, and the outer side of each of the four ball shafts is rotatably connected with a rotating seat.

[0012] Preferably, the lower side of each of the four rotating seats is fixedly connected with a rubber pad.

[0013] Preferably, the rear side of the mechanism plate near the middle part of the left and right sides is slidably connected with two mechanism seats symmetrically distributed on the left and right sides, the inner side of each of the two mechanism seats is movably sleeved with an adjusting seat, the front side of each of the two adjusting seats is rotatably connected with a roller, the roller is located on the front side of the mechanism plate, the upper and lower sides of each of the two mechanism seats are fixedly connected with two second electric push rods distributed on the upper and lower sides, and the outer side of the second electric push rod is fixedly connected to the rear side of the mechanism plate near the upper and lower sides.

[0014] Preferably, the inner side of each of the two mechanism seats and the left and right sides are fixedly connected with a limiting rod, the rear side of the adjusting seat is movably sleeved on the outer side of the limiting rod, the outer side of each of the two limiting rods is movably sleeved with a spring, and the spring is located on the side of the adjusting seat away from the flaw detector body.

[0015] Preferably, the side of each of the four positioning rods near the mounting bracket and the inner side of each of the two mechanism seats near the spring are fixedly connected with a pressure sensor.

[0016] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0017] The utility model provides a kind of automatic center finding guiding device of wheelset magnetic particle flaw detector, adopt the cooperation of positioning mechanism, mechanism plate, positioning rod, first electric push rod, mobile seat, mechanism seat, adjusting seat, gyro wheel, second electric push rod, limiting rod, spring and pressure sensor, it is quickly clamped by second electric push rod driving gyro wheel, rely on the pressure sensor on mechanism seat, quickly find the center between two gyro wheels, directly place wheelset between four positioning rods, then first electric push rod drives positioning rod rotation so that four positioning rods all contact wheelset, adjustment is convenient, control is simple, quickly place wheelset, without manual adjustment.

[0018] The utility model provides a kind of automatic center finding guiding device of wheelset magnetic particle flaw detector, adopt the cooperation of attitude sensor, mounting bracket, flaw detector ontology, adjusting mechanism, moving frame, first hydraulic rod, second hydraulic rod, universal wheel, ball shaft and rotating seat, the attitude state of flaw detector ontology is detected by attitude sensor, so that second hydraulic rod is adjusted to the height of mounting bracket at the same time, its own attitude is quickly adjusted, avoid the error caused by uneven ground. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the front view three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the back view three-dimensional structure schematic diagram of the utility model;

[0021] Figure 3 It is the three-dimensional structure schematic diagram of mounting bracket part of the utility model;

[0022] Figure 4 It is the partial section three-dimensional structure schematic diagram of mechanism plate part of the utility model;

[0023] Figure 5 It is the utility model Figure 4 Center A part enlarged structure schematic diagram.

[0024] In the drawing: 1, mounting bracket;2, flaw detector ontology;3, adjusting mechanism;31, moving frame;32, first hydraulic rod;33, second hydraulic rod;34, universal wheel;35, ball shaft;36, rotating seat;4, positioning mechanism;41, mechanism plate;42, positioning rod;43, first electric push rod;44, mobile seat;45, mechanism seat;46, adjusting seat;47, gyro wheel;48, second electric push rod;49, limiting rod;410, spring;411, pressure sensor;5, attitude sensor. DETAILED DESCRIPTION

[0025] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] As shown in Figures 1-5 A kind of automatic centering guide device of wheelset magnetic particle flaw detector, including mounting frame 1, the inner side middle part of mounting frame 1 is fixedly connected with flaw detector body 2, the downside of flaw detector body 2 is slidably connected with adjusting mechanism 3, the front side of mounting frame 1 is fixedly connected with positioning mechanism 4, and the upside of positioning mechanism 4 is movably installed with attitude sensor 5;

[0027] Positioning mechanism 4 includes mechanism plate 41, the rear side of mechanism plate 41 is fixedly connected on the front side of mounting frame 1, four rectangularly distributed positioning rods 42 are rotatably connected on the front side of mechanism plate 41 close to left and right sides, four first electric push rods 43 are fixedly connected on the rear side of mechanism plate 41 close to upper and lower sides, and the end of four first electric push rods 43 away from flaw detector body 2 is fixedly connected with moving seat 44, the front side of moving seat 44 is slidably connected on the rear side of positioning rod 42, and the downside of attitude sensor 5 is movably installed on the upside of mechanism plate 41 close to middle part.

[0028] It should be noted that attitude sensor 5 is used to detect the state of mounting frame 1 to determine whether the front surface of mechanism plate 41 is in vertical state, first electric push rod 43 can control its own length, so that first electric push rod 43 drives moving seat 44 to move left and right, moving seat 44 slides on the rear side of positioning rod 42 when moving left and right, and then positioning rod 42 rotates, four positioning rods 42 form a rhombus, when four positioning rods 42 all contact wheelset, flaw detector body 2 is opposite to the axis of wheelset, and flaw detector body 2 is a kind of double-row comb-tooth-shaped electrode open-and-close coil magnetic particle flaw detector, which contains two semicircular conductive arms, and a complete multi-turn spiral wire coil is formed between the two by contact point, so that it can freely enter and exit flaw detection station when separated.

[0029] As shown in Figure 3 Adjusting mechanism 3 includes moving frame 31, the downside of mounting frame 1 is slidably connected on the upside of moving frame 31, two first hydraulic rods 32 are fixedly connected on the upside middle part of moving frame 31 in left-right symmetry, and the end of first hydraulic rod 32 away from each other is fixedly connected on the downside of mounting frame 1 close to left and right middle parts, four rectangularly distributed universal wheels 34 are rotatably connected on the downside of moving frame 31 close to front and rear sides, and four rectangularly distributed second hydraulic rods 33 are fixedly connected on the upside of moving frame 31 close to left and right sides.

[0030] It should be noted that the first hydraulic rod 32 can drive the mounting frame 1 to move left and right on the moving frame 31, and the second hydraulic rod 33 can drive the mounting frame 1 to move up and down, thereby moving the whole mounting frame 1 and the positioning mechanism 4, and ensuring that the positioning rod 42 contacts the wheel set.

[0031] As shown in Figure 3 , the lower side of each of the four second hydraulic rods 33 is fixedly connected with a ball shaft 35, and the outer side of each of the four ball shafts 35 is rotatably connected with a rotating seat 36.

[0032] It should be noted that the rotating connection of the rotating seat 36 and the ball shaft 35 allows the second hydraulic rod 33 to not be in a vertical state, so that when the second hydraulic rod 33 adjusts the height of the mounting frame 1, the four second hydraulic rods 33 take different extension amounts to adjust the posture of the mounting frame 1, and ensure that the front side of the mechanism plate 41 is perpendicular to the horizontal plane.

[0033] As shown in Figure 3 , the lower side of each of the four rotating seats 36 is fixedly connected with a rubber pad.

[0034] It should be noted that the rubber pad can be fixed by screws or other locking methods to reduce the wear of the rotating seat 36 by the ground.

[0035] As shown in Figure 5 , the rear side of the mechanism plate 41 is slidably connected with two mechanism seats 45 that are symmetrically distributed on the left and right sides, the inner side of each of the two mechanism seats 45 is movably sleeved with an adjusting seat 46, the front side of each of the two adjusting seats 46 is rotatably connected with a roller 47, and the roller 47 is located on the front side of the mechanism plate 41, the upper and lower sides of each of the two mechanism seats 45 are fixedly connected with two second electric push rods 48 that are distributed in an upper and lower manner, and the outer side of each of the second electric push rods 48 is fixedly connected to the rear side of the mechanism plate 41 near the upper and lower sides.

[0036] It should be noted that the second electric push rod 48 can control its length, so that the second electric push rod 48 drives the mechanism seat 45 to move left and right, and the mechanism seat 45 drives the adjusting seat 46 to move when the mechanism seat 45 moves, thereby causing the two rollers 47 to move in opposite directions in the left and right directions, so that the positioning rod 42 can first quickly find the central axis plane where the axis of the wheel set is located before clamping the wheel set.

[0037] As shown in Figure 5 , the inner side of each of the two mechanism seats 45 is fixedly connected with a limiting rod 49, the rear side of the adjusting seat 46 is movably sleeved on the outer side of the limiting rod 49, the outer side of each of the two limiting rods 49 is movably sleeved with a spring 410, and the spring 410 is located on the side of the adjusting seat 46 away from the flaw detector body 2.

[0038] It needs to be explained that the spring 410 pushes the adjusting seat 46, avoids the roller 47 not being on the horizontal central axis surface of the wheel set, causes the second electric push rod 48 to be difficult to quickly regulate and control the material of the roller 47 when adjusting up and down, and causes the components to be extruded.

[0039] As shown in Figure 5 The four positioning rods 42 close to one side of the mounting frame 1 and the inner side of the two mechanism seats 45 close to one side of the spring 410 are fixedly connected with pressure sensors 411.

[0040] It needs to be explained that the pressure sensor 411 on the moving seat 44 is used for detecting the pressure caused by the spring 410, so as to quickly adjust the relative position of the horizontal reverse of the flaw detector body 2, and the pressure sensor 411 on the positioning rod 42 is used for detecting whether the positioning rod 42 has contacted the wheel set.

[0041] The utility model discloses a working principle: first, the first electric push rod 43 can control own length, make the first electric push rod 43 drive mobile seat 44 left and right movement, when mobile seat 44 left and right movement, its slide in the rear side of positioning rod 42, further make positioning rod 42 rotate, four positioning rods 42 form a rhombus, when four positioning rods 42 all contact wheelset, the flaw detector body 2 is opposite the axle of wheelset, the second electric push rod 48 can control own length, make the second electric push rod 48 drive mechanism seat 45 left and right movement, when mechanism seat 45 moves, drive adjusting seat 46 moves, further make two gyro wheel 47 carry out the reverse motion of left and right direction, make positioning rod 42 can first seek the central axis plane where the axle of wheelset is located before clamping wheelset, the pressure sensor 411 on mobile seat 44 is used for detecting the pressure that spring 410 has caused to it, to reach the relative position of fast adjustment flaw detector body 2 horizontal reverse, the pressure sensor 411 on positioning rod 42 is used for detecting whether positioning rod 42 has contacted wheelset, by the second electric push rod 48 drive gyro wheel 47, make it fast clamping wheelset, rely on the pressure sensor 411 on mechanism seat 45, fast find the center between two gyro wheel 47, directly place wheelset between four positioning rods 42, then the first electric push rod 43 drive positioning rod 42 rotate make four positioning rods 42 all contact wheelset, adjust convenient, control simple, fast place wheelset, do not need manual adjustment, finally, attitude sensor 5 is used for detecting the state of mounting frame 1, to determine whether the front surface of mechanism plate 41 is in vertical state, the first hydraulic rod 32 can drive mounting frame 1 left and right movement on moving frame 31, the second hydraulic rod 33 can drive mounting frame 1 up and down movement, further move the whole of mounting frame 1 and positioning mechanism 4, the rotary connection of rotating seat 36 and ball shaft 35 makes the second hydraulic rod 33 can not be in vertical state, make four second hydraulic rods 33 adopt different telescopic amount when the second hydraulic rod 33 adjusts the height of mounting frame 1, to adjust the attitude of mounting frame 1, ensure that the front side of mechanism plate 41 is perpendicular to the horizontal plane, through the attitude of sensor 5 detects the attitude state of flaw detector body 2, make the second hydraulic rod 33 adjust the height of mounting frame 1 simultaneously, to its own attitude fast adjustment, avoid the error caused by the ground not level.

[0042] The utility model discloses a working principle: first, the first electric push rod 43 can control own length, make the first electric push rod 43 drive mobile seat 44 left and right movement, when mobile seat 44 left and right movement, its slide in the rear side of positioning rod 42, further make positioning rod 42 rotate, four positioning rods 42 form a rhombus, when four positioning rods 42 all contact wheelset, the flaw detector body 2 is opposite the axle of wheelset, the second electric push rod 48 can control own length, make the second electric push rod 48 drive mechanism seat 45 left and right movement, when mechanism seat 45 moves, drive adjusting seat 46 moves, further make two gyro wheel 47 carry out the reverse motion of left and right direction, make positioning rod 42 can first seek the central axis plane where the axle of wheelset is located before clamping wheelset, the pressure sensor 411 on mobile seat 44 is used for detecting the pressure that spring 410 has caused to it, to reach the relative position of fast adjustment flaw detector body 2 horizontal reverse, the pressure sensor 411 on positioning rod 42 is used for detecting whether positioning rod 42 has contacted wheelset, by the second electric push rod 48 drive gyro wheel 47, make it fast clamping wheelset, rely on the pressure sensor 411 on mechanism seat 45, fast find the center between two gyro wheel 47, directly place wheelset between four positioning rods 42, then the first electric push rod 43 drive positioning rod 42 rotate make four positioning rods 42 all contact wheelset, adjust convenient, control simple, fast place wheelset, do not need manual adjustment, finally, attitude sensor 5 is used for detecting the state of mounting frame 1, to determine whether the front surface of mechanism plate 41 is in vertical state, the first hydraulic rod 32 can drive mounting frame 1 left and right movement on moving frame 31, the second hydraulic rod 33 can drive mounting frame 1 up and down movement, further move the whole of mounting frame 1 and positioning mechanism 4, the rotary connection of rotating seat 36 and ball shaft 35 makes the second hydraulic rod 33 can not be in vertical state, make four second hydraulic rods 33 adopt different telescopic amount when the second hydraulic rod 33 adjusts the height of mounting frame 1, to adjust the attitude of mounting frame 1, ensure that the front side of mechanism plate 41 is perpendicular to the horizontal plane, through the attitude of sensor 5 detects the attitude state of flaw detector body 2, make the second hydraulic rod 33 adjust the height of mounting frame 1 simultaneously, to its own attitude fast adjustment, avoid the error caused by the ground not level.

Claims

1. An automatic centering guide device for a wheelset magnetic particle flaw detector, comprising a mounting frame (1), characterized in that: The flaw detector body (2) is fixedly connected to the inner middle of the mounting frame (1), and the adjustment mechanism (3) is slidably connected to the lower side of the flaw detector body (2). The positioning mechanism (4) is fixedly connected to the front side of the mounting frame (1), and the attitude sensor (5) is movably installed on the upper side of the positioning mechanism (4). The positioning mechanism (4) includes a mechanism plate (41). The rear side of the mechanism plate (41) is fixedly connected to the front side of the mounting frame (1). Four rectangular positioning rods (42) are rotatably connected to the front side of the mechanism plate (41) near the left and right sides. Four rectangular first electric push rods (43) are fixedly connected to the rear side of the mechanism plate (41) near the upper and lower sides. A movable seat (44) is fixedly connected to the end of each of the four first electric push rods (43) away from the flaw detector body (2). The front side of the movable seat (44) is slidably connected to the rear side of the positioning rods (42). The lower side of the attitude sensor (5) is movably installed on the upper side of the mechanism plate (41) near the middle.

2. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 1, characterized in that: The adjustment mechanism (3) includes a movable frame (31). The lower side of the mounting frame (1) is slidably connected to the upper side of the movable frame (31). Two first hydraulic rods (32) are fixedly connected to the middle of the upper side of the movable frame (31) and are symmetrically distributed on the left and right. The ends of the first hydraulic rods (32) that are far apart from each other are fixedly connected to the lower side of the mounting frame (1) near the middle of the left and right sides. Four rectangular casters (34) are rotatably connected to the lower side of the movable frame (31) near the front and rear sides. Four rectangular second hydraulic rods (33) are fixedly connected to the upper side of the movable frame (31) near the left and right sides.

3. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 2, characterized in that: Each of the four second hydraulic rods (33) has a ball shaft (35) fixedly connected to its lower side, and a rotating seat (36) is rotatably connected to the outer side of each of the four ball shafts (35).

4. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 3, characterized in that: Rubber pads are fixedly connected to the lower side of each of the four rotating seats (36).

5. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 1, characterized in that: Two symmetrically distributed mechanism seats (45) are slidably connected to the rear side of the mechanism plate (41) near the middle of the left and right sides. An adjusting seat (46) is movably sleeved on the inner side of each of the two mechanism seats (45). A roller (47) is rotatably connected to the front side of each of the two adjusting seats (46), and the roller (47) is located on the front side of the mechanism plate (41). Two second electric push rods (48) are fixedly connected to the upper and lower sides of each of the two mechanism seats (45). The outer side of the second electric push rod (48) is fixedly connected to the rear side of the mechanism plate (41) near the upper and lower sides.

6. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 5, characterized in that: Limiting rods (49) are fixedly connected to the inner left and right sides of the two mechanism seats (45). The rear side of the adjusting seat (46) is movably sleeved on the outer side of the limiting rods (49). Springs (410) are movably sleeved on the outer side of the two limiting rods (49), and the springs (410) are located on the side of the adjusting seat (46) away from the flaw detector body (2).

7. The automatic centering guide device for a wheelset magnetic particle flaw detector according to claim 6, characterized in that: Pressure sensors (411) are fixedly connected to the four positioning rods (42) on the side near the mounting bracket (1) and the inner side of the two mechanism seats (45) near the spring (410).

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