A special magnetic particle flaw detector for train hook body
By designing a special magnetic powder flaw detection machine for train hooks and hook bodies, and using automatic flip and magnetization flaw detection technology, the problem of difficult hook body cracks in the existing technology is solved, and efficient and accurate flaw detection of hook tails, hook ears and hook body main body is achieved.
Patent Information
- Application Number
- CN202111520606.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-13
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2041-12-13
AI Technical Summary
The existing hook body flaw detection technology is difficult to effectively detect cracks in the hook tail, hook ear and hook body body. Due to the bulky hook body, it is difficult to manually flip and inspect, making cracks difficult to detect.
A special magnetic powder flaw detection machine for train hooks is designed, using lifting brackets and rotary clamping mechanisms to realize automatic flip and flaw detection of the hook body. Combined with hook tail magnetization components and axial magnetization coils, it realizes efficient flaw detection of the hook tail, hook ears and hook body main body.
Accurate flaw detection of hook tail, hook ear and hook body body is achieved, the labor efficiency of hook body detection is improved, and the difficulty of manual operation is reduced.
Smart Images
Figure CN115469005B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of magnetic particle flaw detectors, and in particular to a magnetic particle flaw detector dedicated to a train coupler hook body. Background Art
[0002] The connection of railway trains is completed through the coupler buffer device, which is composed of the coupler, buffer, coupler tail frame, follower plate and other parts. The front follower plate, buffer and rear follower plate are installed in the coupler tail frame in sequence. The coupler tail pin connects the coupler, coupler tail and coupler tail frame into a whole, so that the vehicle has three functions: connection, traction and buffering. As an important component for connecting railway carriages, the train coupler is the main bearing component of the driving force during the operation of railway vehicles. The main stress states are tension, pressure, impact force, etc. The main failure forms are dimensional overruns and fatigue cracks due to wear. Therefore, during the production or maintenance of couplers, the inspection of coupler cracks is an important work content.
[0003] The hook structure of my country's railway train coupler is as follows: Figure 1 As shown in the figure, the hook structure is slightly complicated, and the daily operating environment of the train is poor. There is a lot of coal dust and oil sludge in various parts of the hook, which is difficult to clean. The existing hook flaw detection technology mostly uses handheld flaw detectors, which cannot effectively detect the hook tail hole, hook ear and other parts. In addition, since the hook body is relatively heavy, it is difficult to manually flip and inspect the hook body, and some cracks on the hook body are difficult to be found. Summary of the invention
[0004] In view of the deficiencies in the prior art, the present invention provides a special magnetic particle flaw detector for the hook body of a railway coupler. The improved magnetic particle flaw detector can detect the hook tail, hook ear and hook body, and can also realize automatic flipping of the hook body, with a high degree of automation, thereby greatly improving the labor efficiency of hook body flaw detection.
[0005] To achieve the above object, the present invention adopts the following technical solution:
[0006] A magnetic particle flaw detector specially used for a train coupler body comprises a frame, a lifting bracket component, a left electrode and a clamping mechanism, a hook tail magnetizing component, a right electrode and a rotating clamping mechanism, and an axial magnetizing coil.
[0007] The lifting bracket component includes a lifting component and a bottom rotating component. A hook bracket is provided at one end of the lifting bracket component facing the working area, and a hook to be detected is placed on the hook bracket. The lifting component is used to realize the lifting and lowering of the hook bracket in the vertical direction, and the bottom rotating component is used to realize the rotation of the hook bracket in the horizontal plane.
[0008] The left electrode and clamping mechanism include a left clamping cylinder, a left electrode shaft, a left electrode sleeve, a left electrode chuck, and a left electrode brush. The left clamping cylinder and the left electrode sleeve are fixed on the frame. The piston rod of the left clamping cylinder is connected to the left electrode shaft, and the left electrode shaft can slide in the left electrode sleeve. The left clamping cylinder, the left electrode shaft, the left electrode sleeve, and the left electrode chuck are coaxially arranged. The left electrode chuck is rotatably fixed to the end of the left electrode shaft, and the left electrode brush is fixed below the left electrode shaft through a telescopic cylinder. The height of the left electrode and clamping mechanism corresponds to the height of the detection position of the hook body to be detected.
[0009] The hook tail magnetization component includes a hook tail straight iron core lifting component, a hook tail iron core, a hook tail straight iron core fixing plate, and a hook tail straight iron core. The hook tail straight iron core lifting component is fixed on the frame. The hook tail straight iron core fixing plate is fixed on the top of the hook tail straight iron core lifting component and can drive the hook tail straight iron core fixing plate to move up and down. The hook tail straight iron core is fixed on the lower bottom surface of the hook tail straight iron core fixing plate facing the hook body bracket. The hook tail straight iron core is vertically fixed and corresponds to the position of the hook tail hole of the hook body to be detected on the hook body bracket. The hook tail C-shaped iron core is fixed on the frame. The hook tail C-shaped iron core is vertically fixed and its C-shaped opening is aligned with the hook tail straight iron core. The C-shaped opening width of the hook tail C-shaped iron core is greater than the thickness of the hook tail of the hook body to be detected. After the hook tail straight iron core is lowered into place, a "mouth"-shaped loop can be formed between the hook tail straight iron core and the hook tail C-shaped iron core. A hook tail yoke coil is sleeved on the outer side of the vertical section iron core of the hook tail C-shaped iron core.
[0010] The right electrode and rotating clamping mechanism comprises a right electrode component and a right clamping component. A right electrode clamping plate is provided at the end of the right electrode component, and a right clamping plate is provided at the end of the right clamping component. The right electrode and rotating clamping mechanism are at the same height as the left electrode and clamping mechanism.
[0011] Furthermore, the right electrode component is symmetrically distributed on both sides of the right clamping component, and the right electrode component includes a right electrode cylinder and a right electrode shaft, the right electrode cylinder is fixed on the frame, one end of the right electrode shaft is fixed to the piston rod of the right electrode cylinder, and the other ends of the two right electrode shafts are commonly fixed with a right electrode plate, the right electrode clamping plate is fixed to the right electrode plate by bolts, and a hook ear clamping electrode head is fixed on the side of the right electrode clamping plate facing the hook body to be detected, and the hook ear clamping electrode head corresponds to the position of the hook ear of the hook body to be detected, and a hook body fixing head is also fixed on the right electrode clamping plate, and the hook body fixing head is made of insulating material, and the hook body fixing head corresponds to the position of the positioning hole on the hook body to be detected. The right clamping component includes a right clamping cylinder and a right clamping component sleeve, the right clamping component sleeve is rotatably arranged on the frame, the spline on the piston rod of the right clamping cylinder passes through the right clamping component sleeve and is connected to the right clamping plate, a sleeve outer gear is provided on the outer side of the right clamping component sleeve, a driving rack is provided below the sleeve outer gear, one end of the driving rack is connected to a rack driving cylinder, a rack roller is provided below the driving rack, and the rack driving cylinder and the rack roller are both fixed on the frame.
[0012] Furthermore, the lifting component is a lifting cylinder, which is vertically arranged, one end of which is fixed on the frame and its piston rod is connected to a lifting sleeve through a thrust ball bearing, the lifting sleeve is coaxially arranged with the lifting cylinder, the lifting sleeve is rotatably arranged on the frame, an external gear is arranged on the outer side of the lifting sleeve, and the top of the lifting sleeve is fixedly connected to the bottom of the hook bracket. The bottom rotating component includes a rotating motor, which is fixed on the frame, and a driving gear is arranged on the output shaft of the rotating motor, and the rotation of the driving gear on the output shaft of the rotating motor drives the rotation of the lifting sleeve, thereby driving the rotation of the hook bracket.
[0013] Furthermore, the hook tail straight iron core lifting component includes a straight iron core lifting cylinder, a guide rod and a guide hole plate, the straight iron core lifting cylinder is fixed on the frame, the hook tail straight iron core fixing plate is fixed on the piston rod of the straight iron core lifting cylinder, the guide hole plate is fixed on the frame, and the guide rod passes through the guide hole plate and is fixed to the lower bottom surface of the hook tail straight iron core fixing plate. The extension and retraction of the piston rod of the straight iron core lifting cylinder can drive the lifting and lowering of the hook tail straight iron core fixing plate.
[0014] Furthermore, an axial magnetization coil is provided on the frame, and the axial magnetization coil is located on both sides of the hook bracket. A roller is provided between the axial magnetization coil and the frame, and the axial magnetization coil can slide left and right on the frame through the roller.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] (1) The driving rack can drive the left electrode and the clamping mechanism and the right electrode and the rotating clamping mechanism to realize the rotation of the hook body to be detected around the horizontal axis; the hook body bracket can realize the rotation of the hook body to be detected around the vertical axis without manual rotation, thereby improving labor efficiency.
[0017] (2) The hook tail straight iron core can be used to magnetize the hook tail hole, and the hook tail C-shaped iron core can be used to magnetize the hook tail end surface, so that the magnetization flaw detection of the hook tail is more accurate.
[0018] (3) The hook ear clamping electrode head can realize the magnetic flaw detection of the hook ear.
[0019] (4) The left electrode and clamping mechanism and the right electrode and rotating clamping mechanism realize circumferential magnetization, and the axial magnetization coil realizes axial magnetization, so that the flaw detection of the hook body is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural appearance diagram of the hook body to be detected in the present invention.
[0021] Figure 2 The present invention is a schematic diagram of the three-dimensional appearance structure of a magnetic particle flaw detector specially used for a train coupler.
[0022] Figure 3 The present invention is a schematic diagram of the front view of the structure of a magnetic particle flaw detector specially used for a train coupler.
[0023] Figure 4 It is a schematic diagram of the front view of the appearance structure of the left electrode and the clamping mechanism in the present invention.
[0024] Figure 5 It is a schematic diagram of the three-dimensional appearance structure of the lifting bracket component, the hook tail magnetization component, the right electrode and the rotating clamping mechanism in the present invention.
[0025] Figure 6 This is a schematic diagram of the rear view structure of the hook tail magnetized component in the present invention, and the straight iron core of the hook tail is raised.
[0026] Figure 7 It is a schematic diagram of the rear view structure of the magnetized component of the hook tail in the present invention. The straight iron core of the hook tail is lowered into place.
[0027] Figure 8 It is a schematic diagram of the three-dimensional appearance structure of the right electrode and the rotating clamping mechanism in the present invention.
[0028] Fig. 9 It is a schematic diagram of the left-side appearance structure of the right electrode and the rotating clamping mechanism in the present invention.
[0029] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure along the A axis.
[0030] In the figure: 1, frame, 2, lifting bracket component, 2.1, lifting component, 2.2, bottom rotating component, 2.3, lifting sleeve, 3, left electrode and clamping mechanism, 3.1, left clamping cylinder, 3.2, left electrode shaft, 3.3, left electrode sleeve, 3.4, left electrode chuck, 3.5, left electrode brush, 4, hook tail magnetization component, 4.1, hook tail straight iron core lifting component, 4.1.1, straight iron core lifting cylinder, 4.1.2, guide rod, 4.1.3, guide hole plate, 4.2, hook tail C-shaped iron core, 4.3, hook tail straight iron core fixing plate, 4 .4. Straight iron core at the hook tail, 4.5. yoke coil at the hook tail, 5. Hook body to be tested, 6. Hook body bracket, 7. Right electrode and rotating clamping mechanism, 7.1. Right electrode component, 7.2. Right clamping component, 7.2.1. Right clamping cylinder, 7.2.2. Right clamping component sleeve, 7.2.3. Sleeve external gear, 7.3. Rack driving cylinder, 7.4. Driving rack, 7.5. Rack roller, 8. Axial magnetization coil, 9. Right clamping plate, 10. Right electrode plate, 11. Right electrode clamping plate, 12. Hook ear clamping electrode head, 13. Hook body fixing head. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] like Figure 2 , Figure 3 As shown, a magnetic particle flaw detector specially used for a train coupler body comprises a frame 1, a lifting bracket component 2, a left electrode and a clamping mechanism 3, a hook tail magnetizing component 4, a right electrode and a rotating clamping mechanism 7, and an axial magnetizing coil 8.
[0033] The lifting bracket component 2 includes a lifting component 2.1 and a bottom rotating component 2.2. A hook bracket 6 is provided at one end of the lifting bracket component 2 facing the working area, and a hook 5 to be detected is placed on the hook bracket 6. The lifting component 2.1 is used to realize the lifting and lowering of the hook bracket 6 in the vertical direction, and the bottom rotating component 2.2 is used to realize the rotation of the hook bracket 6 in the horizontal plane.
[0034] like Figure 4As shown, the left electrode and clamping mechanism 3 includes a left clamping cylinder 3.1, a left electrode shaft 3.2, a left electrode sleeve 3.3, a left electrode chuck 3.4, and a left electrode brush 3.5. The left clamping cylinder 3.1 and the left electrode sleeve 3.3 are both fixed on the frame 1. The piston rod of the left clamping cylinder 3.1 is connected to the left electrode shaft 3.2, and the left electrode shaft 3.2 can slide in the left electrode sleeve 3.3. The left clamping cylinder 3.1, the left electrode shaft 3.2, the left electrode sleeve 3.3, and the left electrode chuck 3.4 are coaxially arranged. The left electrode chuck 3.4 is rotatably fixed to the end of the left electrode shaft 3.2, and the left electrode brush 3.5 is fixed below the left electrode shaft 3.2 by a telescopic cylinder. The height of the left electrode and clamping mechanism 3 corresponds to the height of the detection position of the hook body 5 to be detected.
[0035] like Figures 5 to 7 As shown, the hook tail magnetization component 4 includes a hook tail straight iron core lifting component 4.1, a hook tail C-shaped iron core 4.2, a hook tail straight iron core fixing plate 4.3, and a hook tail straight iron core 4.4. The hook tail straight iron core lifting component 4.1 is fixed on the frame 1, and the hook tail straight iron core fixing plate 4.3 is fixed to the top of the hook tail straight iron core lifting component 4.1 and can drive the hook tail straight iron core fixing plate 4.3 to move up and down, and the hook tail straight iron core 4.4 is fixed to the lower bottom surface of the hook tail straight iron core fixing plate 4.3 on one side facing the hook body bracket 6, and the hook tail straight iron core 4.4 is vertically fixed and corresponds to the position of the hook tail hole of the hook body 5 to be detected on the hook body bracket 6. The hook tail C-shaped iron core 4.2 is fixed on the frame 1, and the hook tail C-shaped iron core 4.2 is fixed vertically and its C-shaped opening is aligned with the hook tail straight iron core 4.4. The width of the C-shaped opening of the hook tail C-shaped iron core 4.2 is greater than the thickness of the hook tail of the hook body 5 to be detected. After the hook tail straight iron core 4.4 is lowered into place, a "mouth"-shaped loop can be formed between the hook tail straight iron core 4.4 and the hook tail C-shaped iron core 4.2. A hook tail magnetic yoke coil 4.5 is sleeved on the outer side of the vertical section iron core of the hook tail C-shaped iron core 4.2.
[0036] The right electrode and rotating clamping mechanism 7 comprises a right electrode component 7.1 and a right clamping component 7.2. A right electrode clamping plate 11 is provided at the end of the right electrode component 7.1, and a right clamping plate 9 is provided at the end of the right clamping component 7.2. The right electrode and rotating clamping mechanism 7 is at the same height as the left electrode and clamping mechanism 3.
[0037] like Figures 8 to 10As shown, in actual application, the right electrode component 7.1 is symmetrically distributed on both sides of the right clamping component 7.2, and the right electrode component 7.1 includes a right electrode cylinder and a right electrode shaft, the right electrode cylinder is fixed on the frame 1, one end of the right electrode shaft is fixed on the piston rod of the right electrode cylinder, and the other ends of the two right electrode shafts are commonly fixed with a right electrode plate 10, the right electrode clamping plate 11 is fixed to the right electrode plate 10 by bolts, and the right electrode clamping plate 11 is fixed with a hook ear clamping electrode head 12 on the side facing the hook body 5 to be detected, and the hook ear clamping electrode head 12 corresponds to the position of the hook ear of the hook body 5 to be detected, and a hook body fixing head 13 is also fixed on the right electrode clamping plate 11, and the hook body fixing head 13 is made of insulating material, and the hook body fixing head 13 corresponds to the position of the positioning hole on the hook body 5 to be detected. The right clamping component 7.2 includes a right clamping cylinder 7.2.1 and a right clamping component sleeve 7.2.2, the right clamping component sleeve 7.2.2 is rotatably arranged on the frame 1, the spline on the piston rod of the right clamping cylinder 7.2.1 passes through the right clamping component sleeve 7.2.2 and is connected to the right clamping plate 9, the outer side of the right clamping component sleeve 7.2.2 is provided with a sleeve external gear 7.2.3, the lower part of the sleeve external gear 7.2.3 is provided with a driving rack 7.4, one end of the driving rack 7.4 is connected to a rack driving cylinder 7.3, the lower part of the driving rack 7.4 is provided with a rack roller 7.5, the rack driving cylinder 7.3 and the rack roller 7.5 are both fixed on the frame 1.
[0038] like Figure 3 As shown, in actual application, the lifting component 2.1 is a lifting cylinder, which is vertically arranged, one end of which is fixed on the frame 1 and its piston rod is connected to the lifting sleeve 2.3 through a thrust ball bearing, the lifting sleeve 2.3 is coaxially arranged with the lifting cylinder, the lifting sleeve 2.3 is rotatably arranged on the frame 1, an external gear is arranged on the outer side of the lifting sleeve 2.3, and the top of the lifting sleeve 2.3 is fixedly connected to the bottom of the hook body bracket 6. The bottom rotating component 2.2 includes a rotating motor, which is fixed on the frame 1, and a driving gear is arranged on the output shaft of the rotating motor, and the rotation of the driving gear on the output shaft of the rotating motor drives the rotation of the lifting sleeve 2.3, thereby driving the rotation of the hook body bracket 6.
[0039] like Figure 7As shown, in actual application, the hook tail straight iron core lifting component 4.1 includes a straight iron core lifting cylinder 4.1.1, a guide rod 4.1.2 and a guide hole plate 4.1.3, the straight iron core lifting cylinder 4.1.1 is fixed on the frame 1, the hook tail straight iron core fixing plate 4.3 is fixed on the piston rod of the straight iron core lifting cylinder 4.1.1, the guide hole plate 4.1.3 is fixed on the frame 1, and the guide rod 4.1.2 passes through the guide hole plate 4.1.3 and is fixed to the lower bottom surface of the hook tail straight iron core fixing plate 4.3. The extension and retraction of the piston rod of the straight iron core lifting cylinder 4.1.1 can drive the lifting and lowering of the hook tail straight iron core fixing plate 4.3.
[0040] In practical applications, the frame 1 is further provided with an axial magnetizing coil 8, which is located on both sides of the hook bracket 6, and a roller is provided between the axial magnetizing coil 8 and the frame 1, and the axial magnetizing coil 8 can slide left and right on the frame 1 through the roller.
[0041] The working principle of the magnetic particle flaw detector for a train coupler hook body of the present invention is as follows:
[0042] (1) Perform flaw detection on the end face and the hole of the hook tail: the hook body 5 to be inspected is placed on the hook body bracket 6, the piston rod of the straight core lifting cylinder 4.1.1 is extended, and the straight core fixing plate 4.3 of the hook tail drives the straight core 4.4 of the hook tail to rise to its position; the hook body bracket 6 is rotated to rotate the hook tail of the hook body 5 to be inspected to the opening of the C-shaped core 4.2 of the hook tail; the piston rod of the straight core lifting cylinder 4.1.1 is retracted, and the straight core fixing plate 4.3 of the hook tail drives the straight core 4.4 of the hook tail to be inserted into the hole of the hook tail; the liquid is sprayed for magnetization; and then the hook body bracket 6 is rotated to rotate the hook body 5 to be inspected to the observation station to observe the end face and the hole of the hook tail.
[0043] (2) Perform flaw detection on the hook ear and the hook body: Rotate the hook body bracket 6 to rotate the hook body 5 to be inspected into place. At this time, the hook tail of the hook body 5 to be inspected faces the left electrode and the clamping mechanism 3, and the hook ear of the hook body 5 to be inspected faces the right electrode and the rotating clamping mechanism 7; the left clamping cylinder 3.1 drives the left electrode clamp 3.4 to extend, and the right clamping cylinder 7.2.1 drives the right clamping plate 9 to extend to clamp the hook body 5 to be inspected, and the right electrode component 7.1 drives the right electrode clamping plate 11 to extend so that the hook ear clamping electrode head 12 is close to the hook ear of the hook body 5 to be inspected, and energize to achieve circumferential magnetization; pull the axial magnetization coil 8 to cover the outside of the hook body 5 to be inspected, and energize to achieve axial magnetization;
[0044] (3) The driving rack 7.4 can drive the left electrode and the clamping mechanism 3 and the right electrode and the rotating clamping mechanism 7 to realize the rotation of the hook body 5 to be detected around the horizontal axis; the hook body bracket 6 can realize the rotation of the hook body 5 to be detected around the vertical axis.
[0045] 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, and substitutions 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. A magnetic particle flaw detector for train hooks, characterized in that: It comprises a frame (1), a lifting bracket component (2), a left electrode and a clamping mechanism (3), a hook tail magnetizing component (4), a right electrode and a rotating clamping mechanism (7), and an axial magnetizing coil (8); The lifting bracket component (2) comprises a lifting component (2.1) and a bottom rotating component (2.2); a hook bracket (6) is provided at one end of the lifting bracket component (2) facing the working area, and a hook body (5) to be detected is placed on the hook bracket (6); the lifting component (2.1) is used to realize the lifting and lowering of the hook bracket (6) in the vertical direction, and the bottom rotating component (2.2) is used to realize the rotation of the hook bracket (6) in the horizontal plane; The left electrode and clamping mechanism (3) comprises a left clamping cylinder (3.1), a left electrode shaft (3.2), a left electrode sleeve (3.3), a left electrode chuck (3.4), and a left electrode brush (3.5); the left clamping cylinder (3.1) and the left electrode sleeve (3.3) are both fixed to the frame (1); the piston rod of the left clamping cylinder (3.1) is connected to the left electrode shaft (3.2); the left electrode shaft (3.2) can be moved in the left electrode sleeve (3. 3) sliding inside; the left clamping cylinder (3.1), the left electrode shaft (3.2), the left electrode sleeve (3.3), and the left electrode chuck (3.4) are coaxially arranged; the left electrode chuck (3.4) is rotatably fixed to the end of the left electrode shaft (3.2); the left electrode brush (3.5) is fixed below the left electrode shaft (3.2) via a telescopic cylinder; the height of the left electrode and the clamping mechanism (3) corresponds to the height of the detection position of the hook body (5) to be detected; The hook tail magnetization component (4) comprises a hook tail straight iron core lifting component (4.1), a hook tail C-shaped iron core (4.2), a hook tail straight iron core fixing plate (4.3), and a hook tail straight iron core (4.4); the hook tail straight iron core lifting component (4.1) is fixed to the frame (1); the hook tail straight iron core fixing plate (4.3) is fixed to the top of the hook tail straight iron core lifting component (4.1) and can drive the hook tail straight iron core fixing plate (4.3) to move up and down; the hook tail straight iron core (4.4) is fixed to the lower bottom surface of the hook tail straight iron core fixing plate (4.3) on one side facing the hook body bracket (6); the hook tail straight iron core (4.4) is vertically fixed and connected to the hook body. The position of the hook tail hole of the hook body (5) to be detected on the bracket (6) corresponds to the position of the hook tail hole; the hook tail C-shaped iron core (4.2) is fixed on the frame (1), the hook tail C-shaped iron core (4.2) is vertically fixed and its C-shaped opening is aligned with the hook tail straight iron core (4.4), and the width of the C-shaped opening of the hook tail C-shaped iron core (4.2) is greater than the thickness of the hook tail of the hook body (5) to be detected; after the hook tail straight iron core (4.4) is lowered into place, a "mouth"-shaped loop can be formed between the hook tail straight iron core (4.4) and the hook tail C-shaped iron core (4.2); a hook tail magnetic yoke coil (4.5) is sleeved on the outer side of the vertical section iron core of the hook tail C-shaped iron core (4.2); The right electrode and rotating clamping mechanism (7) comprises a right electrode component (7.1) and a right clamping component (7.2); a right electrode clamping plate (11) is provided at the end of the right electrode component (7.1); a right clamping plate (9) is provided at the end of the right clamping component (7.2); and the right electrode and rotating clamping mechanism (7) and the left electrode and clamping mechanism (3) are at the same height; The right electrode component (7.1) is symmetrically distributed on both sides of the right clamping component (7.2), and the right electrode component (7.1) includes a right electrode cylinder and a right electrode shaft. The right electrode cylinder is fixed to the frame (1), one end of the right electrode shaft is fixed to the piston rod of the right electrode cylinder, and the other ends of the two right electrode shafts are commonly fixed with a right electrode plate (10). The right electrode clamping plate (11) is fixed to the right electrode plate (10) by bolts, and a hook ear clamping electrode head (12) is fixed on the side of the right electrode clamping plate (11) facing the hook body (5) to be detected, and the hook ear clamping electrode head (12) corresponds to the position of the hook ear of the hook body (5) to be detected. A hook body fixing head (13) is also fixed on the right electrode clamping plate (11), and the hook body fixing head (13) is made of insulating material. The hook body fixing head (13) is connected to the The position of the positioning hole on the hook body (5) to be detected corresponds to the position; the right clamping component (7.2) comprises a right clamping cylinder (7.2.1) and a right clamping component sleeve (7.2.2); the right clamping component sleeve (7.2.2) is rotatably arranged on the frame (1); the spline on the piston rod of the right clamping cylinder (7.2.1) passes through the right clamping component sleeve (7.2.2) and is connected to the right clamping plate (9); a sleeve outer gear (7.2.3) is provided on the outer side of the right clamping component sleeve (7.2.2); a driving rack (7.4) is provided below the sleeve outer gear (7.2.3); one end of the driving rack (7.4) is connected to a rack driving cylinder (7.3); a rack roller (7.5) is provided below the driving rack (7.4); the rack driving cylinder (7.3) and the rack roller (7.5) are both fixed on the frame (1); The hook tail straight iron core lifting component (4.1) comprises a straight iron core lifting oil cylinder (4.1.1), a guide rod (4.1.2) and a guide hole plate (4.1.3). 4.1.1) is fixed on the frame (1), and the straight iron core lifting cylinder ( The hook tail straight iron core fixing plate (4.3) is fixed on the piston rod of the hook tail straight iron core fixing plate (4.1.1), the guide hole plate (4.1.3) is fixed on the frame (1), and the guide rod (4.1.2) passes through the guide hole plate (4.1.3) and is fixed to the lower bottom surface of the hook tail straight iron core fixing plate (4.3); the straight iron core lifting cylinder ( The extension and retraction of the piston rod of 4.1.1) can drive the lifting and lowering of the hook tail straight iron core fixing plate (4.3); The frame (1) is also provided with an axial magnetizing coil (8), the axial magnetizing coil (8) being located on both sides of the hook bracket (6), and a roller is provided between the axial magnetizing coil (8) and the frame (1), and the axial magnetizing coil (8) can slide left and right on the frame (1) via the roller.
2. A magnetic particle flaw detector for railway hook body as claimed in claim 1, characterized in that: The lifting component (2.1) is a lifting cylinder, which is arranged vertically. One end of the lifting cylinder is fixed to the frame (1) and its piston rod is connected to the lifting sleeve (2.3) via a thrust ball bearing. The lifting sleeve (2.3) is coaxially arranged with the lifting cylinder. The lifting sleeve (2.3) is rotatably arranged on the frame (1). An external gear is provided on the outer side of the lifting sleeve (2.3). The top of the lifting sleeve (2.3) is fixedly connected to the bottom of the hook body bracket (6). The bottom rotating component (2.2) comprises a rotating motor, which is fixed to the frame (1). A driving gear is provided on the output shaft of the rotating motor. The driving gear on the output shaft of the rotating motor is rotated to drive the lifting sleeve (2.3) to rotate, thereby driving the hook body bracket (6) to rotate.
Citation Information
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