CN216646787U - Servo valve permanent magnet magnetic performance rapid comparison detection device - Google Patents

Abstract

The utility model discloses a device for rapidly comparing and detecting magnetic properties of a permanent magnet of a servo valve, which comprises a detection meter body, wherein a detection seat is arranged on the detection meter body, the detection seat comprises two magnetic conduction parts, a non-magnetic conduction part is arranged between the two magnetic conduction parts, the device also comprises two sliding restraint blocks, the two sliding restraint blocks correspond to the two magnetic conduction parts one by one, the sliding restraint blocks are installed in a sliding fit manner with the corresponding magnetic conduction parts, the two sliding restraint blocks are arranged oppositely, the sliding directions of the two sliding restraint blocks are positioned in the same linear direction, and the two sliding restraint blocks are close to or far away from the non-magnetic conduction part when sliding. The adoption of the scheme has the obvious effects that the permanent magnet to be detected can be quickly positioned, kept and restrained, so that all the permanent magnets to be detected and the standard parts of the same type are placed at the same and fixed detection position in the same posture, and the detection speed and accuracy are improved; meanwhile, the permanent magnet motor is also suitable for permanent magnets of different types and sizes.

Description

Servo valve permanent magnet magnetic performance rapid comparison detection device

Technical Field

The utility model relates to magnetic detection equipment, in particular to a rapid detection device for a permanent magnet.

Background

The permanent magnet is one of the basic accessories commonly used for various mechanical equipment, such as a loudspeaker, a magnetic lifting device, a magnetic button and the like, the magnetic force directly influences the performance of the product, so the permanent magnet needs to be inspected before leaving a factory, and particularly the stability of the magnetic performance of the permanent magnet is particularly important when the permanent magnet is applied to a servo valve in the high-precision field.

The test of the strength of the magnetic force is usually performed by a magnetic property detection device. However, in the actual working and production process, when the inspector uses the purchased magnetic force detection equipment, the permanent magnets need to be manually placed on the detection parts of the detection equipment one by one, and the posture and the positions of the permanent magnets need to be kept, so that the process is abnormal, time-consuming and labor-consuming. Therefore, it is very urgent to design and manufacture a scheme and a device capable of rapidly detecting the permanent magnet.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a magnetic property detection device capable of rapidly positioning, maintaining and constraining permanent magnets of different types and sizes.

The technical scheme is as follows:

the utility model provides a servovalve permanent magnet magnetic property rapid comparison detection device, is including detecting the table body, it detects the seat to be equipped with on the table body to detect, it includes two magnetic conduction portions, two to detect the seat be equipped with between the magnetic conduction portion and not lead magnetic portion, its key lies in: the detection seat further comprises two sliding constraint blocks, the two sliding constraint blocks correspond to the two magnetic conduction parts one by one, the sliding constraint blocks are installed in a sliding fit mode with the corresponding magnetic conduction parts, the two sliding constraint blocks are arranged oppositely, the sliding directions of the two sliding constraint blocks are located in the same straight line direction, and the two sliding constraint blocks are close to or far away from the non-magnetic conduction parts when sliding.

Compared with the prior art, the utility model has the beneficial effects that: the permanent magnet to be detected can be quickly positioned, maintained and restrained, so that all the permanent magnets to be detected and the standard parts of the same model are placed at the same and fixed detection position in the same posture, and the detection speed and accuracy are improved; meanwhile, the permanent magnet is also suitable for permanent magnets of different models and sizes.

Drawings

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

FIG. 2 is a schematic structural diagram of the test socket 2;

FIG. 3 is a bottom view of FIG. 2;

FIG. 4 is a cross-sectional view A-A' of FIG. 3;

fig. 5 is a schematic view showing the fitting relationship of iron core 12 to case 10;

fig. 6 is a schematic diagram illustrating a corresponding relationship between the iron core 12 and the detection seat 2.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

A servo valve permanent magnet magnetic performance rapid comparison detection device is shown in figures 1-6 and comprises an ammeter 3 and a detection meter body 1 which are arranged side by side, wherein a detection seat 2 is arranged on the detection meter body 1;

specifically, the detection meter body 1 comprises a meter case 10, a pointer rotating shaft 11, an iron core 12, a solenoid 13, a pointer 14 and a dial 15 are arranged inside the meter case 10, the pointer rotating shaft 11 is vertically arranged, the lower end of the pointer rotating shaft 11 is movably and rotatably assembled on the inner wall of the watchcase 10, the iron core 12 is horizontally arranged, the middle part of the iron core 12 is fixed with the upper end of the pointer rotating shaft 11, the solenoid 13 is spirally wound on the iron core 12, the pointer 14 is horizontally arranged, the root of the pointer 14 is fixed in the middle of the iron core 12, the dial 15 is provided with reading scales corresponding to the free end of the pointer 14, two ends of the solenoid 13 are connected with the positive pole and the negative pole of the same direct current power supply, a return torsion spring 16 is sleeved on the pointer rotating shaft 11, one end of the return torsion spring 16 is fixed with the pointer rotating shaft 11, and the other end of the return torsion spring 16 is fixed with the watch case 10;

the detection seat 2 is fixedly embedded on the watch case 10, a part of the detection seat 2 extends out of the outer wall of the watch case 10, and the circuit part of the ammeter 3 is connected with the solenoid 13 in series.

The detection seat 2 comprises two magnetic conduction parts 21, a non-magnetic conduction part 22 is arranged between the two magnetic conduction parts 21, the non-magnetic conduction part 22 abuts against the two magnetic conduction parts 21, a vertical installation plane is arranged on the magnetic conduction part 21, a vertical abutting plane is arranged on the non-magnetic conduction part 22, and the vertical installation plane and the vertical abutting plane are parallel and level;

the detection seat 2 further comprises two sliding constraint blocks 23, the two sliding constraint blocks 23 correspond to the two magnetic conduction parts 21 one by one, a T-shaped groove in the horizontal direction is formed in the vertical installation plane, fixture blocks are correspondingly arranged on the sliding constraint blocks 23, the sliding constraint blocks 23 and the corresponding magnetic conduction parts 21 are installed in a sliding fit mode through the cooperation of the fixture blocks and the T-shaped groove, the two sliding constraint blocks 23 are arranged oppositely, the two sliding constraint blocks 23 slide on the same horizontal straight line, the inner side face of each sliding constraint block 23 is a constraint face, a chamfer is arranged on the upper portion of the constraint face, and the two sliding constraint blocks 23 are close to or far away from the non-magnetic conduction parts 22 when sliding.

The iron core 12 and the detection seat 2 are located at the same horizontal position, the iron core 12 is close to the detection seat 2, and the vertical installation plane and the vertical abutting plane are located outside the watch case 10.

The principle of the detection meter body 1 is as follows: current is passed through the solenoid 13, the iron core 12 is magnetized, and when an external magnet approaches the iron core 12 in a certain posture (with the magnetic poles of the iron core 12 being in mutual repulsion) the iron core 12 is pushed to rotate until it cannot stop against the restoring force of the return torsion spring 16, whereby the pointer 14 rotates by a certain angle and produces a certain reading. And comparing the reading of the piece to be detected with the reading of the standard piece to detect the magnetic property of the piece to be detected.

When the permanent magnet is close to and attached to the detection seat 2 for detection, the distance between the two sliding restraint blocks 23 can be adjusted according to different permanent magnets, so that the restraint surface is close to the permanent magnet, the permanent magnet is quickly placed into a detection position which is adjusted and fixed through a chamfer on the upper part of the restraint surface, unreliable deviation caused by manual placement of a part is avoided, and the detection result is uniform and accurate.

The magnetic conduction part 21 is provided with scale marks along the sliding direction of the sliding restraint block 23, the sliding restraint block 23 is provided with mark lines corresponding to the scale marks, and the positions of the scale marks and the mark lines can be interchanged; in addition, in order to determine and ensure that the constraint surfaces of the two sliding constraint blocks 23 are on both sides of the center line of the non-magnetic conductive part 22 by using marks, the scale marks on the two magnetic conductive parts 21 should also be symmetrical with respect to the center line of the non-magnetic conductive part 22.

The magnetic conduction part 21 is provided with a locking screw 24, the head of the locking screw 24 faces the corresponding slide restraint block 23 and contacts with the slide restraint block, and the slide restraint block 23 can be locked or unlocked by rotating the locking screw 24. The sliding restraint block 23 is made of a magnetic conductive material.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims (7)

1. The utility model provides a servovalve permanent magnet magnetic property rapid comparison detection device, is including detecting table body (1), it detects seat (2) to be equipped with on table body (1) to detect, detect seat (2) including two magnetic conduction portions (21), two be equipped with between magnetic conduction portion (21) and do not lead magnetic portion (22), its characterized in that: detect seat (2) and still include two about piece (23) of sliding, two about piece (23) of sliding and two magnetic conduction portion (21) one-to-one, about piece (23) of sliding and corresponding magnetic conduction portion (21) sliding fit installation, two about piece (23) of sliding is just right the setting each other, two the slip direction of about piece (23) of sliding is located same straight line direction, two about piece (23) of sliding is close to or is kept away from when sliding magnetic conduction portion (22) does not lead.

2. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 1, characterized in that: and scale marks are arranged on the magnetic conduction part (21) along the sliding direction of the sliding constraint block (23).

3. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 1, characterized in that: and the magnetic conduction part (21) is provided with a locking screw (24), and the head of the locking screw (24) faces the corresponding sliding constraint block (23) and is in contact with the sliding constraint block.

4. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 1, characterized in that: not lead magnetic part (22) and two magnetic conduction portion (21) are supported and are leaned on, be equipped with vertical mounting surface on magnetic conduction portion (21), it supports the plane to be equipped with vertically on magnetic conduction portion (22) not, vertical mounting surface with vertically support and lean on the plane looks parallel and level, the about piece (23) of sliding is located on the vertical mounting surface, two the about piece (23) of sliding slides on same horizontal straight line, the medial surface of the about piece (23) of sliding is the binding face, the upper portion of binding face is equipped with the chamfer.

5. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 1, characterized in that: the sliding restraint block (23) is made of a magnetic conductive material.

6. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 1, characterized in that: the detection meter body (1) comprises a meter shell (10), a pointer rotating shaft (11), an iron core (12), a solenoid (13), a pointer (14) and a dial plate (15) are arranged inside the meter shell (10), the pointer rotating shaft (11) is vertically arranged, the lower end of the pointer rotating shaft (11) is movably and rotatably assembled on the inner wall of the meter shell (10), the iron core (12) is horizontally arranged, the middle of the iron core (12) is fixed with the upper end of the pointer rotating shaft (11), the solenoid (13) is spirally wound on the iron core (12), the pointer (14) is horizontally arranged, the root of the pointer (14) is fixed in the middle of the iron core (12), a reading scale is arranged on the dial plate (15) corresponding to the free end of the pointer (14), and the two ends of the solenoid (13) are connected with the positive electrode and the negative electrode of the same direct-current power supply, a return torsion spring (16) is sleeved on the pointer rotating shaft (11), one end of the return torsion spring (16) is fixed with the pointer rotating shaft (11), and the other end of the return torsion spring (16) is fixed with the watch case (10);

the detection seat (2) is fixedly embedded on the watchcase (10), one part of the detection seat (2) extends out of the outer wall of the watchcase (10), the iron core (12) and the detection seat (2) are located at the same horizontal position, and the iron core (12) is close to the detection seat (2).

7. The servo valve permanent magnet magnetic performance rapid comparison detection device according to claim 6, characterized in that: still include ampere meter (3), ampere meter (3) with detection table body (1) sets up side by side, ampere meter (3) with solenoid (13) are established ties.

Images