Lifting force detection device of magnetic powder detector

Abstract

The utility model provides a lifting force detection device for a magnetic powder detector, which relates to the technical field of magnetic powder detectors and comprises a U-shaped frame, first fixing blocks are symmetrically and fixedly connected to positions, close to the bottom, of the inner surface wall of the U-shaped frame, and two second fixing blocks are symmetrically and fixedly connected to positions, close to the middle, of the inner surface wall of the U-shaped frame. Third fixing blocks are symmetrically and fixedly connected to the positions, close to the top, of the inner surface wall of the U-shaped frame, a first balancing weight is arranged between the outer surfaces of the two first fixing blocks, and a second balancing weight is arranged between the inner bottoms of the two second fixing blocks. According to the device disclosed by the utility model, through the design of the balancing weight and the pull rope, the detection of various weights is realized, so that the performance of the magnetic powder detector under different lifting forces is evaluated, and compared with a spring, the pull rope has more accurate monitoring data values and more accurate obtained detection data in a long-time use process.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic particle detectors, in particular to a lifting force detection device for magnetic particle detectors. Background Art

[0002] A magnetic particle detector lifting force detection device is a special device used to measure and evaluate the lifting force generated by a magnetic particle detector (especially a yoke-type magnetic particle flaw detector) during the detection process. This device is of great significance in the field of non-destructive testing because it is directly related to the detection capability and accuracy of the magnetic particle detector for surface defects of ferromagnetic materials.

[0003] In the prior art, such as Chinese patent publication number CN221037769U, a magnetic particle detector lifting force detection device is disclosed, including a U-shaped bracket, a sub-bracket hinged at both ends of the U-shaped bracket and folded outward, and a test block, the inner side of the U-shaped bracket and the side of the sub-bracket are provided with inner grooves that are connected to each other, and the two ends of the test block are respectively connected to a sliding mechanism so that the test block slides back and forth along the inner groove, and non-metallic connecting seats are respectively arranged between the test block and the inner bottom surface of the U-shaped bracket. The connecting seats are connected by springs, and the U-shaped bracket and the sub-bracket are provided with a detachable self-locking mechanism to achieve self-locking of the sub-bracket on the U-shaped bracket. The U-shaped bracket and the sub-bracket are correspondingly provided with a scale of lifting force calculated by the spring deformation coefficient. The utility model detects whether the lifting force meets the requirements by adsorbing the test block by the magnetic particle detector and pulling it to the corresponding scale, thereby solving the problem that conventional test blocks are bulky and cannot be carried.

[0004] Although the above patent solves the problem that conventional test blocks are bulky and cannot be carried, the elastic coefficient of the spring will change during long-term use due to material fatigue, stress relaxation or corrosion, which will cause the elongation or compression of the spring to change under the same external force, thereby affecting the accuracy of the lifting force measurement. Therefore, in response to the above problem, we propose a new type of lifting force detection device for magnetic particle detector. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the elastic coefficient of the spring will change during long-term use due to material fatigue, stress relaxation or corrosion, which will cause the elongation or compression of the spring to change under the same external force, thereby affecting the accuracy of lifting force measurement, and a lifting force detection device for a magnetic particle detector is proposed.

[0006] To achieve the above object, the present utility model adopts the following technical solution: A lifting force detection device for a magnetic particle detector, comprising a U-shaped frame. At a position near the bottom of the inner wall of the U-shaped frame, first fixing blocks are symmetrically and fixedly connected. At a position near the middle of the inner wall of the U-shaped frame, two second fixing blocks are symmetrically and fixedly connected. At a position near the top of the inner wall of the U-shaped frame, third fixing blocks are symmetrically and fixedly connected. Between the outer surfaces of the two first fixing blocks, a first counterweight is arranged. Between the inner bottoms of the two second fixing blocks, a second counterweight is arranged. On the tops of the two third fixing blocks, a third counterweight is arranged. At a position near the middle of the outer surfaces of the second counterweight and the third counterweight, mounting grooves are respectively formed. Between the inner walls of the two mounting grooves, a pulling rope is arranged.

[0007] Preferably, the bottom of the pulling rope is fixedly connected with a test plate, and the bottom of the pulling rope is fixedly connected with the top of the first counterweight.

[0008] Preferably, two limiting rods are symmetrically and fixedly connected to the top of the first counterweight, and the outer surfaces of the two limiting rods slidably penetrate through the outer surfaces of the second counterweight and the third counterweight.

[0009] Preferably, two fourth fixing blocks are symmetrically and fixedly connected to a position near the top of the inner wall of the U-shaped frame.

[0010] Preferably, a baffle is fixedly connected to the front surface of the U-shaped frame, and a bottom plate is fixedly connected to the rear surface of the U-shaped frame.

[0011] Preferably, two fixing rods are symmetrically and fixedly connected between the inner walls of the two mounting grooves, and pulleys are rotatably connected to the outer surfaces of the fixing rods.

[0012] Preferably, the positions of the two pulleys are matched with the pulling rope.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0014] 1. In the present utility model, through the design of the counterweights and the pulling rope, the detection of various weights is realized, so as to evaluate the performance of the magnetic particle detector under different lifting forces. Compared with a spring, the pulling rope has more accurate monitoring data values and more accurate detection data during long-term use.

[0015] 2. In the present utility model, the fixing rods are for facilitating the installation of the pulleys in the mounting grooves. The design of the pulleys reduces the friction when the pulling rope is pulled, thereby prolonging the service life of the pulling rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a lifting force detection device for a magnetic particle detector proposed by the present utility model;

[0017] Figure 2 The present utility model provides an exploded view of a lifting force detection device for a magnetic particle detector;

[0018] Figure 3 The present utility model provides a perspective view of a partial structure of a lifting force detection device for a magnetic particle detector;

[0019] Figure 4 The present utility model provides a cross-sectional view of a partial structure of a lifting force detection device for a magnetic particle detector.

[0020] Legend: 1. U-shaped frame; 11. Bottom plate; 12. Baffle; 2. First fixing block; 21. Second fixing block; 22. Third fixing block; 23. Fourth fixing block; 3. First counterweight; 31. Second counterweight; 32. Third counterweight; 33. Installation groove; 4. Limit rod; 41. Pulling rope; 42. Test plate; 5. Fixing rod; 51. Pulley. Detailed implementation manners

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0022] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0023] Embodiment 1: As Figures 1 - 4As shown in the figure, the present utility model provides a lifting force detection device for a magnetic particle detector, including a U-shaped frame 1. Symmetrically and fixedly connected to the inner surface of the U-shaped frame 1 near the bottom are first fixing blocks 2. Symmetrically and fixedly connected to the inner surface of the U-shaped frame 1 near the middle are two second fixing blocks 21. Symmetrically and fixedly connected to the inner surface of the U-shaped frame 1 near the top are third fixing blocks 22. Between the outer surfaces of the two first fixing blocks 2 is arranged a first counterweight 3. Between the inner bottoms of the two second fixing blocks 21 is arranged a second counterweight 31. On the tops of the two third fixing blocks 22 is arranged a third counterweight 32. Installation grooves 33 are formed in the outer surfaces of the second counterweight 31 and the third counterweight 32 near the middle. Between the inner surfaces of the two installation grooves 33 is arranged a pulling rope 41. Fixedly connected to the bottom of the pulling rope 41 is a test plate 42. The bottom of the pulling rope 41 is fixedly connected to the top of the first counterweight 3. Symmetrically and fixedly connected to the top of the first counterweight 3 are two limiting rods 4. The outer surfaces of the two limiting rods 4 slidably penetrate through the outer surfaces of the second counterweight 31 and the third counterweight 32. Symmetrically and fixedly connected to the inner surface of the U-shaped frame 1 near the top are two fourth fixing blocks 23. Fixedly connected to the front surface of the U-shaped frame 1 is a baffle 12. Fixedly connected to the rear surface of the U-shaped frame 1 is a bottom plate 11.

[0024] The effect achieved by the entire Embodiment 1 is that when using this device to detect the lifting force of a magnetic particle detector, the magnetic particle detector is adsorbed on the test plate 42. When pulled upward, it is pulled upward by the test plate 42, so the bottom pull rope 41 will also be pulled upward. Since the weights of the first counterweight 3, the second counterweight 31, and the third counterweight 32 in the U-shaped frame 1 are designed to be equal, under the action of the magnetic particle detector, when driving the pull rope 41 to move upward in the installation groove 33, the first counterweight 3 will be pulled upward first. Observe and record the rising situation and staying time of the first counterweight 3 to evaluate the lifting force. Since two limit rods 4 are designed on the first counterweight 3, under their action, counterweights can be gradually stacked for detection. When it is necessary to pull the first counterweight 3 and the second counterweight 31 with more weight upward, through the guiding action of the limit rods 4, the second counterweight 31 is linearly stacked and pulled up. At this time, it indicates that the detection of the combined weight of the two counterweights is also qualified. Similarly, the third counterweight 32 is the same. After each stacking, observe and record the situation of the lifting force to evaluate the performance of the magnetic particle detector under different weights. Through the design of the counterweights and the pull rope 41, this device realizes the detection of multiple weights, thereby evaluating the performance of the magnetic particle detector under different lifting forces. Compared with a spring, the pull rope 41 has more accurate monitoring data values and more accurate detection data during long-term use. The first fixing block 2, the second fixing block 21, the third fixing block 22, and the fourth fixing block 23 respectively play the role of fixing several counterweights to prevent the counterweights from having different movement trajectories inside the U-shaped frame 1, while the bottom plate 11 and the baffle 12 play the role of fixing several counterweights inside the U-shaped frame 1 to prevent them from falling out.

[0025] Embodiment 2: As Figures 1 - 4 shown, two fixing rods 5 are symmetrically and fixedly connected between the inner walls of the two installation grooves 33. A pulley 51 is rotatably connected to the outer surface of the fixing rod 5, and the positions of the two pulleys 51 are matched with the pull rope 41.

[0026] The effect achieved by the entire Embodiment 2 is that the fixing rods 5 are for facilitating the installation of the pulleys 51 in the installation grooves 33. The design of the pulleys 51 reduces the friction when the pull rope 41 is pulled, thereby extending the service life of the pull rope 41.

[0027] Working principle: When using this device to detect the lifting force of a magnetic particle detector, the magnetic particle detector is adsorbed on the test plate 42. When it is pulled upward, it is pulled upward through the test plate 42. Therefore, the pull rope 41 at the bottom will also be pulled upward. Since the weights of the first counterweight 3, the second counterweight 31, and the third counterweight 32 in the U-shaped frame 1 are designed to be the same, under the action of the magnetic particle detector, when driving the pull rope 41 to move upward in the installation groove 33, the first counterweight 3 will be pulled up first. Observe and record the rising situation and staying time of the first counterweight 3 to evaluate the lifting force. Since two limit rods 4 are designed on the first counterweight 3, under their action, counterweights can be gradually stacked for detection. When it is necessary to pull up the first counterweight 3 and the second counterweight 31 with more weight, through the guiding action of the limit rod 4, the second counterweight 31 is linearly stacked and pulled up. At this time, it indicates that the detection of the combined weight of the two counterweights is also qualified. Similarly, the third counterweight 32 is the same. After each stacking, observe and record the situation of the lifting force to evaluate the performance of the magnetic particle detector under different weights. Through the design of the counterweights and the pull rope 41, this device realizes the detection of multiple weights, thereby evaluating the performance of the magnetic particle detector under different lifting forces. Compared with a spring, the pull rope 41 has more accurate monitoring data values and more accurate detection data during long-term use. Moreover, the fixed rod 5 is for facilitating the installation of the pulley 51 in the installation groove 33. The design of the pulley 51 reduces the friction when the pull rope 41 is pulled, thereby extending the service life of the pull rope 41.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A lifting force detection device for a magnetic particle detector, comprising a U-shaped frame (1), characterized in that: On the inner surface of the U-shaped frame (1) near the bottom, there are symmetrically and fixedly connected first fixing blocks (2). On the inner surface of the U-shaped frame (1) near the middle, there are symmetrically and fixedly connected two second fixing blocks (21). On the inner surface of the U-shaped frame (1) near the top, there are symmetrically and fixedly connected third fixing blocks (22). Between the outer surfaces of the two first fixing blocks (2), there is a first counterweight (3). Between the inner bottoms of the two second fixing blocks (21), there is a second counterweight (31). On the tops of the two third fixing blocks (22), there is a third counterweight (32). On the outer surfaces of the second counterweight (31) and the third counterweight (32) near the middle, there are installation grooves (33) opened. Between the inner surfaces of the two installation grooves (33), there is a pull rope (41).

2. The lifting force detection device of the magnetic particle detector according to claim 1, characterized in that: At the bottom of the pull rope (41), there is fixedly connected a test plate (42), and the bottom of the pull rope (41) is fixedly connected to the top of the first counterweight (3).

3. The lifting force detection device of the magnetic particle flaw detector according to claim 2, wherein: On the top of the first counterweight (3), there are symmetrically and fixedly connected two limiting rods (4), and the outer surfaces of the two limiting rods (4) slide through the outer surfaces of the second counterweight (31) and the third counterweight (32).

4. The lifting force detection device of the magnetic particle flaw detector according to claim 3, characterized in that: On the inner surface of the U-shaped frame (1) near the top, there are symmetrically and fixedly connected two fourth fixing blocks (23).

5. The lifting force detection device of the magnetic particle flaw detector according to claim 4, characterized in that: On the front surface of the U-shaped frame (1), there is fixedly connected a baffle (12), and on the rear surface of the U-shaped frame (1), there is fixedly connected a bottom plate (11).

6. The lifting force detection device of the magnetic particle detector according to claim 5, characterized in that: Between the inner surfaces of the two installation grooves (33), there are symmetrically and fixedly connected two fixing rods (5), and on the outer surface of the fixing rod (5), there is rotatably connected a pulley (51).

7. The lifting force detection device of the magnetic particle flaw detector according to claim 6, characterized in that: The positions of the two pulleys (51) are matched with the pull rope (41).

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