Ultrasonic flaw detection probe for hollow axle of motor train unit

Abstract

The utility model discloses a motor train unit hollow axle ultrasonic flaw detection probe which comprises a grabbing shell, the grabbing shell is designed to be hollow, a cavity is formed in the grabbing shell, an ultrasonic probe is installed at the end, away from the grabbing shell, of a stand column in an inserted mode, and the ultrasonic probe and the stand column are designed to be concentric. A positioning insertion block is fixedly installed on the outer surface of the ultrasonic probe, a sliding mechanism is arranged on the outer surface of the stand column, the ultrasonic probe is protected through the sliding mechanism, and the damage probability of the ultrasonic probe during falling is reduced. According to the ultrasonic flaw detection probe for the hollow axle of the motor train unit, the protective frame is kept in a state of extending out of the stand column through the spring, so that the ultrasonic probe does not directly contact with the ground when the whole grabbing shell falls off and is blocked by the protective frame, and direct contact between the ultrasonic probe and the ground when the ultrasonic probe falls off is reduced through the protective frame; when the ultrasonic probe falls off, the edge of the ultrasonic probe is not easy to contact with the ground to cause deformation and wafer damage.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic probes, in particular to an ultrasonic flaw detection probe for a hollow axle of a motor vehicle group. Background Art

[0002] In the inspection of hollow axles of EMUs, ultrasonic probes are required for ultrasonic testing. After detecting the defective hollow axles, manual detection is required to make an accurate judgment again. The most important part of the ultrasonic flaw detection head in manual inspection is the chip, which is a single crystal or polycrystalline thin film with piezoelectric effect. Its function is to convert electrical energy and sound energy into each other. However, during the use process, the ultrasonic probe may fall, causing damage and deformation of the ultrasonic probe, making it impossible to continue to use the ultrasonic probe. Utility Model Content

[0003] The utility model aims to provide an ultrasonic flaw detection probe for hollow axles of EMUs, so as to solve the problem that a manual ultrasonic flaw detection head may fall and break a chip in the probe as mentioned in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultrasonic flaw detection probe for a hollow axle of an EMU, comprising a gripping shell, the gripping shell being hollow in design, and a column being fixedly installed on the outer surface of one end of the gripping shell, a cavity being provided inside the gripping shell, and the cavity inside the gripping shell is communicated with the column, a sliding groove being provided on the outer surface of the column, and the column and the gripping shell being concentric in design, an ultrasonic probe being inserted and installed on the end of the column away from the gripping shell, and the ultrasonic probe and the column being concentric in design, and a positioning plug being fixedly installed on the outer surface of the ultrasonic probe, a sliding mechanism being provided on the outer surface of the column, and the sliding mechanism being used to protect the ultrasonic probe to reduce the chance of damage to the ultrasonic probe when it falls.

[0005] Preferably, the sliding mechanism includes: a protective frame, which is slidably mounted on the outer surface of the column, and the column is engaged with the protective frame, a spring is arranged between the protective frame and the gripping shell, and the spring is passed through the column, and the ultrasonic probe is located inside the protective frame, and one end of the ultrasonic probe does not exceed the protective frame.

[0006] By adopting the above technical solution, the spring can be used to ensure that the protective frame is always extended and higher than the side surface of the ultrasonic probe, thereby reducing the direct contact between the ultrasonic probe and the ground when it falls to the ground. The protective frame adds an additional layer of protection, thereby reducing the probability of the ultrasonic probe being damaged by falling to the ground.

[0007] Preferably, an oil filling port is provided on the outer surface of the gripping shell, a pressing handle is rotatably installed on the outer surface of the gripping shell, and a squeezing pump is installed through the outer surface of the gripping shell, and one end of the squeezing pump located outside the gripping shell is fitted with the outer surface of the pressing handle, a torsion spring is provided between the pressing handle and the gripping shell, a counterweight head is fixedly installed on the input end of the squeezing pump, and the outer surface of the counterweight head is fitted with the inner surface of the gripping shell.

[0008] By adopting the above technical solution, the lubricating filling medium can be injected into the interior of the gripping shell through the oil filling port and pumped out through the extrusion pump. The counterweight head can make the input end of the extrusion pump always contact with the lubricating medium in the gripping shell in accordance with the gravity, so that the extrusion pump can always pump out the lubricating medium.

[0009] Preferably, a rotating mechanism is provided between the gripping shell and the protective frame, through which the lubricating medium can be coated on the outer surface of the hollow axle, thereby reducing the gap between the ultrasonic probe and the outer surface of the hollow axle during manual flaw detection, making the measurement more accurate and facilitating the movement of the ultrasonic probe to reduce the wear of the ultrasonic probe.

[0010] By adopting the above technical solution, the squeezing handle can be used to drive the squeezing pump to pump the lubricating medium in the gripping shell to the outer surface of the roller brush, and then apply it to the outer surface of the hollow axle through the roller brush. After the gripping shell is pressed down, the protective frame automatically shrinks, allowing the outer surface of the ultrasonic probe to fit the outer surface of the hollow axle, reducing the gap between the outer surface of the hollow axle and the ultrasonic probe, and at the same time facilitating the movement of the ultrasonic probe, so that defective hollow axles can be identified more easily.

[0011] Preferably, the rotating mechanism includes: a roller brush, which is rotatably mounted on one end of the protective frame away from the gripping shell, and a connecting hose is provided between the protective frame and the gripping shell, and the connecting hose is connected to the output end of the extrusion pump, and the same passage is opened inside both sides of the protective frame, and the passage inside the protective frame is in contact with the outer surface of the roller brush.

[0012] By adopting the above technical solution, the pressing handle is pressed down to cause the extrusion pump to pump the lubricating medium out of the connecting hose to the outer surface of the roller brush, so that the inspector can quickly perform the test without carrying the lubricating medium, while reducing the spillage and waste of the lubricating medium.

[0013] Preferably, the positioning block is engaged with one end of the column, and snap pins are slidably installed on the outer surfaces of both sides of the column, and the end of the snap pin close to the ultrasonic probe is inclined, the snap pin is engaged with the positioning block, a male connector is fixedly installed at one end of the ultrasonic probe, a female connector is fixedly installed at one end of the gripping shell close to the spring, and the female connector on the gripping shell close to the spring side is engaged with the male connector on the side of the ultrasonic probe.

[0014] By adopting the above technical solution, the ultrasonic probe can be easily fixed on the side surface of the column through the positioning plug block and the snap pin, and the cable connected to the plug block can be connected through the male connector and the female connector, so as to facilitate the plug-in, fixation and replacement of the ultrasonic probe.

[0015] Preferably, a positioning column is fixedly installed on the end of the gripping shell away from the spring, and a sliding buckle block is slidably installed on the end of the positioning column located outside the gripping shell, and one end of the sliding buckle block is inclined, and a plug-in block is inserted into the end of the gripping shell away from the protective frame, and the plug-in block and the gripping shell are concentrically designed, the outer surface of the positioning column passes through the outer surface of the plug-in block, and a plug connector female seat is fixedly installed on the end of the plug-in block located inside the gripping shell, and a plug connector male seat is fixedly installed on the end of the gripping shell close to the plug-in block, and the plug connector male seat of the gripping shell close to the plug-in block is engaged with the plug connector female seat at one end of the plug block, and the plug block is engaged with the sliding buckle block.

[0016] By adopting the above technical solution, the plug-in block can be fixed on one side of the gripping shell, so that the gripping shell and the plug-in block can be connected to each other, and the cable on one side of the plug-in block can be replaced when it is broken. Through the male and female plug connectors, the cable between the ultrasonic probe and the plug-in block can be quickly and stably connected, reducing the cost of replacing accessories during use.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the ultrasonic flaw detection probe for hollow axles of EMUs:

[0018] 1. The spring keeps the protective frame in the state of extending the column, so that when the grip shell falls, the ultrasonic probe will not directly contact the ground, and the protective frame will block it. The protective frame reduces the direct contact between the ultrasonic probe and the ground when it falls, so that when the ultrasonic probe falls, the edge will not easily contact the ground to cause deformation and chip damage;

[0019] 2. The squeezing handle can be squeezed to activate the squeezing pump to extract the lubricating medium inside the gripping shell, and the counterweight head can make the gripping shell always contact the lubricating medium by gravity when moving, so that the squeezing pump can always extract the lubricating medium when in use, and send it from the connecting hose into the passage of the protection frame, and discharge it to the outer surface of the roller brush, and brush the outer surface of the hollow axle through the roller brush, so that when the gripping shell is pressed down later, the gap between the ultrasonic probe and the outer surface of the hollow axle is reduced, so that the ultrasonic probe moves more smoothly on the outer surface of the hollow axle, and at the same time reduces the inconvenience and waste of carrying the lubricating medium;

[0020] 3. By grasping the male and female connectors in the housing, when the ultrasonic probe is inserted into the housing, the positioning plug block and the buckle pin can fix the ultrasonic probe in the housing, so that the male connector on one side of the ultrasonic probe is plugged into the female connector in the housing, making it easier to replace the ultrasonic probe;

[0021] 4. Insert the positioning column into the interior of the plug-in block, so that the plug-in block and the sliding buckle block are engaged, and the plug-in block is fixed inside the gripping shell. The female socket of the plug-in block is plugged into the male socket of the plug-in connector in the gripping shell to connect the ultrasonic probe to the cable of the plug-in block. When the cable of the plug-in block is damaged, it can be easily replaced without replacing the entire cable, thereby reducing the cost of replacing accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view structure of the gripping shell and the protection frame of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the gripping shell and the column of the utility model;

[0024] Figure 3 This is a schematic diagram of the side view structure of the positioning column and the gripping shell of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the protection frame and the roller brush of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the ultrasonic probe and the positioning plug block of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning column and the plug-in block of the utility model.

[0028] In the figure: 1. gripping shell; 2. squeezing pump; 3. counterweight head; 4. pressing handle; 5. positioning column; 6. sliding buckle block; 7. plug-in block; 8. oil filling port; 9. column; 10. spring; 11. protection frame; 12. roller brush; 13. ultrasonic probe; 14. positioning plug-in block; 15. buckle pin; 16. connecting hose; 17. male plug connector; 18. female plug connector. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: an ultrasonic flaw detection probe for a hollow axle of a train set, comprising a gripping shell 1, the gripping shell 1 is hollow in design, and a column 9 is fixedly installed on the outer surface of one end of the gripping shell 1, a cavity is provided inside the gripping shell 1, and the cavity in the gripping shell 1 is communicated with the column 9, a slide groove is provided on the outer surface of the column 9, and the column 9 and the gripping shell 1 are concentrically designed, an ultrasonic probe 13 is inserted and installed at one end of the column 9 away from the gripping shell 1, and the ultrasonic probe 13 and the column 9 are concentrically designed, and the ultrasonic probe 13 A positioning plug 14 is fixedly installed on the outer surface, and a sliding mechanism is provided on the outer surface of the column 9. The ultrasonic probe 13 is protected by the sliding mechanism to reduce the chance of damage to the ultrasonic probe 13 when it falls. The sliding mechanism includes: a protection frame 11, the protection frame 11 is slidably installed on the outer surface of the column 9, and the column 9 is engaged with the protection frame 11, a spring 10 is arranged between the protection frame 11 and the gripping shell 1, and the spring 10 is passed through the column 9, the ultrasonic probe 13 is located inside the protection frame 11, and one end of the ultrasonic probe 13 does not exceed the protection frame 11.

[0031] When the probe falls, the protective frame 11 can prevent the ultrasonic probe 13 from directly contacting the ground. At the same time, the spring 10 can reduce the impact generated when the protective frame 11 contacts the ground, reduce the contact between the ultrasonic probe 13 and the ground, and reduce the probability of damage to the ultrasonic probe 13 or edge deformation.

[0032] An oil filling port 8 is provided on the outer surface of the gripping shell 1, a pressing handle 4 is rotatably installed on the outer surface of the gripping shell 1, and a squeezing pump 2 is installed through the outer surface of the gripping shell 1, and one end of the squeezing pump 2 located outside the gripping shell 1 is in contact with the outer surface of the pressing handle 4, a torsion spring is provided between the pressing handle 4 and the gripping shell 1, a counterweight head 3 is fixedly installed on the input end of the squeezing pump 2, and the outer surface of the counterweight head 3 is in contact with the inner surface of the gripping shell 1.

[0033] Through the weight of the counterweight head 3, the input end of the extrusion pump 2 is always in the lubricating medium no matter what angle the gripping shell 1 is at, so that the lubricating medium can always be pumped out through the extrusion pump 2 when the gripping shell 1 changes its angle, and the lubricating medium can be added to the interior of the gripping shell 1 through the oil filling port 8, which makes it more convenient for the inspector to use it without carrying the lubricating medium.

[0034] A rotating mechanism is provided between the gripping shell 1 and the protective frame 11, through which the lubricating medium can be coated on the outer surface of the hollow axle, and the gap between the ultrasonic probe 13 and the outer surface of the hollow axle can be reduced during manual flaw detection, making the measurement more accurate and convenient to move the ultrasonic probe 13 to reduce the wear of the ultrasonic probe 13. The rotating mechanism includes: a roller brush 12, which is rotatably installed at one end of the protective frame 11 away from the gripping shell 1, and a connecting hose 16 is provided between the protective frame 11 and the gripping shell 1, and the connecting hose 16 is connected to the output end of the extrusion pump 2, and the same path is opened inside both sides of the protective frame 11, and the path inside the protective frame 11 fits the outer surface of the roller brush 12.

[0035] By squeezing the pressing handle 4, the squeezing pump 2 is driven to move, so that the squeezing pump 2 draws out the lubricating medium inside the gripping shell 1, and discharges it into the interior of the protective frame 11 through the connecting hose 16, and then the lubricating medium in the gripping shell 1 is drawn out and discharged into the outer surface of the roller brush 12, and the lubricating medium on the outer surface of the roller brush 12 is applied to the outer surface of the hollow axle. The gripping shell 1 is pressed to make the ultrasonic probe 13 stick to the outer surface of the hollow axle, and the protective frame 11 is moved along the direction of the column 9. At the same time, the roller brush 12 is still in contact with the outer surface of the hollow axle, so that the ultrasonic probe 13 is more convenient to move on the hollow axle, and at the same time, the wear of the ultrasonic probe 13 can be reduced, and the gap between the ultrasonic probe 13 and the hollow axle can be filled to make the measurement more accurate.

[0036] The positioning block 14 is engaged with one end of the column 9, and the outer surfaces of both sides of the column 9 are slidably installed with a snap pin 15, and the end of the snap pin 15 close to the ultrasonic probe 13 is inclined, the snap pin 15 is engaged with the positioning block 14, one end of the ultrasonic probe 13 is fixedly installed with a male connector 17, and the end of the gripping shell 1 close to the spring 10 is fixedly installed with a female connector 18, and the female connector 18 on the side of the gripping shell 1 close to the spring 10 is engaged with the male connector 17 on the side of the ultrasonic probe 13.

[0037] By engaging the positioning block 14 with the snap pin 15, the ultrasonic probe 13 can be fixedly installed at one end of the column 9. By the inclined surface of the snap pin 15, the positioning block 14 can be directly fixed after being inserted into the interior of the column 9, so that the male connector 17 on one side of the ultrasonic probe 13 can be stably plugged into the female connector 18 in the gripping shell 1. When the ultrasonic probe 13 needs to be replaced, it is only necessary to pull the snap pin 15 to disengage the snap pin 15 from the positioning block 14 to pull out the ultrasonic probe 13, so that the ultrasonic probe 13 can be easily installed and disassembled, and it is convenient to replace a damaged ultrasonic probe 13 or an ultrasonic probe 13 of different specifications.

[0038] A positioning column 5 is fixedly installed on the end of the gripping shell 1 away from the spring 10, and a sliding buckle block 6 is slidably installed on the end of the positioning column 5 located outside the gripping shell 1, and one end of the sliding buckle block 6 is inclined, and a plug-in block 7 is inserted at the end of the gripping shell 1 away from the protective frame 11, and the plug-in block 7 is concentric with the gripping shell 1, the outer surface of the positioning column 5 passes through the outer surface of the plug-in block 7, and a plug connector female seat 18 is fixedly installed on the end of the plug-in block 7 located inside the gripping shell 1, and a plug connector male seat 17 is fixedly installed on the end of the gripping shell 1 close to the plug-in block 7, and the plug connector male seat 17 of the gripping shell 1 close to the plug block 7 is engaged with the plug connector female seat 18 at one end of the plug block 7, and the plug block 7 is engaged with the sliding buckle block 6.

[0039] The plug-in block 7 can be inserted into the gripping shell 1 through the positioning column 5, and the sliding buckle block 6 is engaged with the plug-in block 7, so that the female plug connector 18 on the outer surface of the plug-in block 7 and the male plug connector 17 in the gripping shell 1 are plugged into each other, and the cables on the side surface of the plug-in block 7 are connected to the ultrasonic probe 13 through the male plug connector 17 and the female plug connector 18. After the cables on the outer surface of the plug-in block 7 are damaged, the sliding buckle block 6 can be pushed into the positioning column 5, and the plug-in block 7 can be pulled out from the gripping shell 1, so that the damaged cables can be replaced conveniently, and the probe does not need to be replaced as a whole, thereby reducing the cost of replacing accessories when they are damaged.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic flaw detection probe for a hollow axle of a train, comprising a gripping shell (1), wherein the gripping shell (1) is hollow in design, and a column (9) is fixedly mounted on the outer surface of one end of the gripping shell (1), a cavity is provided inside the gripping shell (1), and the cavity in the gripping shell (1) is communicated with the column (9), a sliding groove is provided on the outer surface of the column (9), and the column (9) and the gripping shell (1) are concentrically designed, an ultrasonic probe (13) is inserted and mounted on one end of the column (9) away from the gripping shell (1), and the ultrasonic probe (13) and the column (9) are concentrically designed, and a positioning plug (14) is fixedly mounted on the outer surface of the ultrasonic probe (13), characterized in that: The outer surface of the column (9) is provided with a sliding mechanism, and the ultrasonic probe (13) is protected by the sliding mechanism to reduce the probability of damage to the ultrasonic probe (13) when it falls.

2. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 1 is characterized in that: The sliding mechanism comprises: a protection frame (11), the protection frame (11) is slidably mounted on the outer surface of the column (9), and the column (9) is engaged with the protection frame (11), a spring (10) is arranged between the protection frame (11) and the gripping shell (1), and the spring (10) is passed through the column (9), and the ultrasonic probe (13) is located inside the protection frame (11), and one end of the ultrasonic probe (13) does not exceed the protection frame (11).

3. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 1 is characterized in that: The outer surface of the gripping shell (1) is provided with an oil filling port (8), a pressing handle (4) is rotatably mounted on the outer surface of the gripping shell (1), and a squeeze pump (2) is installed through the outer surface of the gripping shell (1), and one end of the squeeze pump (2) located outside the gripping shell (1) is in contact with the outer surface of the pressing handle (4), a torsion spring is provided between the pressing handle (4) and the gripping shell (1), and a counterweight head (3) is fixedly mounted on the input end of the squeeze pump (2), and the outer surface of the counterweight head (3) is in contact with the inner surface of the gripping shell (1).

4. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 1 is characterized by: A rotating mechanism is provided between the gripping shell (1) and the protective frame (11), and a lubricating medium can be applied to the outer surface of the hollow axle through the rotating mechanism, thereby reducing the gap between the ultrasonic probe (13) and the outer surface of the hollow axle during manual flaw detection, making the measurement more accurate and facilitating the movement of the ultrasonic probe (13) to reduce the wear of the ultrasonic probe (13).

5. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 4 is characterized in that: The rotating mechanism comprises: a roller brush (12), the roller brush (12) being rotatably mounted on one end of the protection frame (11) away from the gripping shell (1), and a connecting hose (16) being arranged between the protection frame (11) and the gripping shell (1), and the connecting hose (16) being connected to the output end of the extrusion pump (2), and passages being opened inside both sides of the protection frame (11), and the passages inside the protection frame (11) being in contact with the outer surface of the roller brush (12).

6. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 1, characterized in that: The positioning plug (14) is engaged with one end of the column (9), and buckle pins (15) are slidably installed on the outer surfaces of both sides of the column (9), and the buckle pins (15) are inclined at one end close to the ultrasonic probe (13). The buckle pins (15) are engaged with the positioning plug (14), and a male connector seat (17) is fixedly installed at one end of the ultrasonic probe (13). A female connector seat (18) is fixedly installed at one end of the gripping shell (1) close to the spring (10), and the female connector seat (18) on the side of the gripping shell (1) close to the spring (10) is engaged with the male connector seat (17) on the side of the ultrasonic probe (13).

7. The ultrasonic flaw detection probe for hollow axles of EMUs according to claim 1 is characterized by: A positioning column (5) is fixedly installed at one end of the gripping shell (1) away from the spring (10), and a sliding buckle block (6) is slidably installed at one end of the positioning column (5) located outside the gripping shell (1), and one end of the sliding buckle block (6) is inclined. A plug-in block (7) is inserted at one end of the gripping shell (1) away from the protection frame (11), and the plug-in block (7) and the gripping shell (1) are concentrically designed. The outer surface of the positioning column (5) is penetrated by The outer surface of the plug-in block (7) is inserted, and a female plug connector (18) is fixedly installed at one end of the plug-in block (7) located inside the gripping shell (1), and a male plug connector (17) is fixedly installed at one end of the gripping shell (1) close to the plug-in block (7), and the male plug connector (17) of the gripping shell (1) close to the plug-in block (7) is engaged with the female plug connector (18) at one end of the plug-in block (7), and the plug-in block (7) is engaged with the sliding buckle block (6).

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