Pulling-out force detection device of permanent magnet jack

Abstract

The utility model relates to the technical field of detection devices, in particular to a pull-out force detection device of a permanent magnet jack. The pulling-out force detection device comprises a base, a test flat plate and tension equipment, wherein a tension and compression sensor is arranged at the bottom of the base. The inner side face of the testing flat plate is connected with the base, the outer side face of the testing flat plate is used for being connected with a permanent magnet jack, and a damping assembly is arranged between the testing flat plate and the base. And the tension equipment is used for being connected with the permanent magnet lifting jack, and the tension equipment is used for applying tension perpendicular to the test flat plate to the permanent magnet lifting jack. The purpose of detecting the pulling-out force of the permanent magnet jack through the pulling force equipment is achieved, the permanent magnet jack can be detected without specially purchasing special equipment, and the manufacturing cost and the use cost are greatly reduced. And the damping assembly is arranged between the base and the testing flat plate so as to absorb most of counter-acting force generated after the permanent magnet jack is pulled off, so that the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a pull-off force detection device for a permanent magnetic lifter. Background Art

[0002] In recent years, permanent magnetic lifters have become increasingly popular in the unloading, lifting, and transportation of various types of plate-like raw materials and semi-finished products. Compared to traditional methods, they offer advantages such as high efficiency and ease of operation. Lifting permanent magnets are widely used in the machinery manufacturing industry to lift ferromagnetic objects such as steel plates due to their low energy consumption, lack of installation requirements, minimal maintenance, and high reliability. Pull-off force, the minimum force required to mechanically pull an object free, is a critical technical parameter for ensuring the safe operation of permanent magnetic lifters. To ensure the safety of permanent magnetic lifters during production operations, it is essential to test their pull-off force. However, there is currently no dedicated equipment on the market for testing the pull-off force of permanent magnetic lifters.

[0003] Prior art methods for testing the pull-out force of permanent magnetic lifters often suffer from numerous limitations. These methods are crude and difficult to accurately measure key performance indicators. Because testing equipment is typically specialized and expensive, it can only test a limited number of permanent magnetic lifters within factories, resulting in high costs. Furthermore, the testing process is complex, time-consuming, and inefficient, and the reaction force after the permanent magnetic lifter is pulled out is large, posing a safety hazard. Utility Model Content

[0004] Regarding the related technologies, the pull-out force detection equipment for permanent magnetic lifters has high usage costs and poses safety risks.

[0005] In a first aspect, an embodiment of the present application provides a pull-off force detection device for a permanent magnetic lifter, which includes: a base, a test plate, and a tension device; wherein,

[0006] A tension and compression sensor is installed at the bottom of the base. The inner side of the test plate is connected to the base, and the outer side of the test plate is connected to the permanent magnetic lifter. A shock-absorbing assembly is installed between the test plate and the base. A tension device is connected to the permanent magnetic lifter and is used to apply a tensile force perpendicular to the test plate to the permanent magnetic lifter.

[0007] In combination with the first aspect, in one embodiment, the shock absorbing assembly includes: a plurality of spring parts, the plurality of spring parts are spaced apart and arranged between the test plate and the base, and two ends of the spring parts are respectively connected to the test plate and the base.

[0008] In combination with the first aspect, in one embodiment, the shock absorbing assembly further includes: a plurality of rubber blocks, wherein the plurality of rubber blocks are spaced apart and arranged between the test plate and the base.

[0009] In combination with the first aspect, in one embodiment, the shock absorbing assembly further includes: a plurality of air shock absorbers, wherein the plurality of air shock absorbers are spaced apart and arranged between the test plate and the base.

[0010] In combination with the first aspect, in one embodiment, each of the air shock absorbers is disposed between one of the spring portions and one of the rubber blocks.

[0011] In combination with the first aspect, in one embodiment, the pull-off force detection device further includes: a display, which is connected to the tension and compression sensor signal, and the display is used to display the tension data of the tension and compression sensor on the screen of the display.

[0012] In combination with the first aspect, in one embodiment, the tension equipment includes: a tensile testing machine, a bottom fixed end of which is connected to the tension and compression sensor, and a movable beam of the tensile testing machine is used to be connected to the permanent magnetic lifter.

[0013] In combination with the first aspect, in one embodiment, one end of the tension and compression sensor is connected to the base, and the other end is provided with a connecting shaft, and the connecting shaft is used to be connected to the bottom fixed end of the tensile testing machine.

[0014] In combination with the first aspect, in one embodiment, the base is detachably connected to the test plate via a plurality of bolts.

[0015] In combination with the first aspect, in one embodiment, the plurality of bolts are arranged circumferentially along the inner side edge of the base.

[0016] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0017] This application uses a tensile test device to test the pull-out force of a permanent magnetic lifter, eliminating the need for specialized equipment and significantly reducing manufacturing and operating costs. Furthermore, a shock-absorbing assembly is provided between the base and the test plate to absorb most of the reaction force after the permanent magnetic lifter is pulled out, improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic structural diagram of a pull-off force detection device in an embodiment of the present application;

[0020] Figure 2 This is a structural diagram of the base in an embodiment of the present application;

[0021] Figure 3 This is a structural schematic diagram of a base with a shock-absorbing assembly installed in an embodiment of the present application.

[0022] In the figure: 1. Base; 2. Tension and compression sensor; 3. Test plate; 4. Permanent magnetic lifter; 5. Shock absorber assembly; 51. Spring part; 52. Rubber block; 53. Air shock absorber; 6. Display; 7. Connecting shaft; 8. Bolt. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 this application.

[0024] In the related technology, the pull-off force detection equipment of the permanent magnetic lifter has the problem of high cost and potential safety hazards. Figure 1 As shown, the embodiment of the present application provides a pull-off force detection device for a permanent magnetic lifter, which includes: a base 1, a test plate 3 and a tension device; wherein,

[0025] The base 1 has a tension and compression sensor 2 at its bottom. The inner side of a test plate 3 is connected to the base 1, and the outer side of the test plate 3 is connected to a permanent magnetic lifter 4. A shock-absorbing assembly 5 is provided between the test plate 3 and the base 1. A tension device is connected to the permanent magnetic lifter 4 to apply a tensile force perpendicular to the test plate 3 to the permanent magnetic lifter 4.

[0026] It is worth noting that a shock-absorbing assembly 5 is provided between the base 1 and the test plate 3. The shock-absorbing assembly 5 can decompose most of the reaction force after the permanent magnetic lifter 4 is pulled off, reducing the accidental risks that may occur during the detection process and ensuring the safety of operators and equipment.

[0027] Optionally, the tension equipment includes: a tensile testing machine, a bottom fixed end of which is connected to the tension and compression sensor 2 , and a movable beam of the tensile testing machine is used to be connected to the permanent magnetic lifter 4 .

[0028] It is worth noting that using a tensile testing machine to apply vertical tension to the permanent magnetic lifter 4 to detect its pull-off force greatly reduces the manufacturing cost and the use cost, and can accurately measure the pull-off force to meet the detection requirements.

[0029] In some specific embodiments, the shock absorbing assembly 5 includes: a plurality of spring portions 51 , the plurality of spring portions 51 are spaced apart between the test plate 3 and the base 1 , and two ends of the spring portion 51 are connected to the test plate 3 and the base 1 respectively.

[0030] It can be understood that in the above embodiment, the elastic expansion and contraction characteristics of the spring portion 51 are utilized to absorb the reaction force on the test plate 3 caused by the permanent magnetic jack 4 being pulled off.

[0031] Furthermore, in order to improve the shock absorption effect, the shock absorption assembly 5 further includes: a plurality of rubber blocks 52 , and the plurality of rubber blocks 52 are spaced apart and arranged between the test plate 3 and the base 1 .

[0032] In some preferred embodiments, the shock absorbing assembly 5 further includes: a plurality of air shock absorbers 53 , and the plurality of air shock absorbers 53 are spaced apart and arranged between the test plate 3 and the base 1 .

[0033] It should be noted that the air shock absorber 53 can not only be used to absorb the reaction force, but also facilitates the movement and use of the pull-off force detection device due to the light weight of the air shock absorber 53.

[0034] In some specific implementations, such as Figure 2 and Figure 3 As shown, each of the air shock absorbers 53 is disposed between one of the spring portions 51 and one of the rubber blocks 52 .

[0035] Furthermore, two groups of air shock absorbers 53, two groups of rubber blocks 52 and two groups of spring parts 51 are provided on the base 1. Each group includes five corresponding components, and the corresponding components of each group are arranged side by side in a one-to-one correspondence.

[0036] Preferably, if Figure 3 As shown, the two groups of air shock absorbers 53 are arranged in the middle of the base 1. The two groups of rubber blocks 52 are arranged on both sides of the two groups of air shock absorbers 53. The two groups of spring parts 51 are respectively arranged between the air shock absorbers 53 and the group of rubber blocks 52.

[0037] It is worth noting that the rubber block 52 and the air shock absorber 53 are both connected to the base 1 through threads, and the spring is fixed through positioning holes on the base 1 and the test plate 3.

[0038] Furthermore, positioning holes are provided on the base 1 and the test plate 3 , and the spring portion 51 passes through the positioning holes on the base 1 and the test plate 3 .

[0039] In some preferred embodiments, the pull-off force detection device further includes: a display 6 , which is connected to the tension and compression sensor 2 signal, and the display 6 is used to display the tension data of the tension and compression sensor 2 on the screen of the display 6 .

[0040] It is understandable that the display 6 can be used to quickly feed back the test results to the staff.

[0041] Furthermore, the display 6 is installed on the side of the test plate 3 to facilitate viewing by the operator.

[0042] In some preferred embodiments, one end of the tension and compression sensor 2 is connected to the base 1, and the other end is provided with a connecting shaft 7, and the connecting shaft 7 is used to be connected to the bottom fixed end of the tensile testing machine.

[0043] It is worth noting that, when conducting the test, the bottom fixed end of the tensile testing machine is connected to the connecting shaft 7 , and the movable beam applies a vertical tensile force to the permanent magnetic lifter 4 .

[0044] In some optional embodiments, the base 1 is detachably connected to the test plate 3 via a plurality of bolts 8. Optionally, the plurality of bolts 8 are circumferentially arranged along the inner side edge of the base 1.

[0045] It is worth noting that the plurality of bolts 8 are arranged around the base 1 to ensure the connection stability between the base 1 and the test plate 3 .

[0046] The steps for using the pull-off force detection device of the permanent magnetic lifter in this application include:

[0047] Step S1, connect the connecting shaft 7 to the base of the tensile testing machine or other equipment that can provide vertical tensile force, connect the hook of the permanent magnetic lifter 4 to be tested to the movable beam of the tensile testing machine or other equipment that can provide vertical tensile force, and place the permanent magnetic lifter 4 to be tested at a specific position on the test plate 3 to ensure that its connection is firm.

[0048] Step S2: Start the power supply of the device, and slowly apply tension using a tensile testing machine or other equipment that can provide vertical tension to simulate the stress conditions in actual work.

[0049] Step S3: During the process of applying the pulling force, the tension and compression sensors monitor and record the magnitude and change of the pulling force in real time.

[0050] In step S4, the permanent magnetic lifter 4 is separated from the test plate 3, and the peak value of the pulling force is recorded, which is the pull-off force.

[0051] Step S5: Turn off the power supply of the device, remove the permanent magnetic lifter after detection, and store and organize the detection data.

[0052] In summary, this application uses a tensile test device to test the pullout force of a permanent magnetic lifter, eliminating the need for specialized equipment and significantly reducing manufacturing and operating costs. Furthermore, a shock-absorbing assembly is provided between the base and the test plate to absorb most of the reaction force after the permanent magnetic lifter is pulled out, improving safety.

[0053] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0055] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A pull-off force detection device for a permanent magnetic lifter, characterized in that: include: A base (1) having a tension and compression sensor (2) provided at its bottom; A test plate (3), the inner side of which is connected to the base (1); an outer side of the test plate (3) is used to be connected to a permanent magnetic lifter (4); and a shock absorbing assembly (5) is provided between the test plate (3) and the base (1); A tension device is used to be connected to the permanent magnetic lifter (4), and the tension device is used to apply a tension perpendicular to the test plate (3) to the permanent magnetic lifter (4).

2. The pull-off force detection device according to claim 1, wherein: The shock absorbing assembly (5) comprises: a plurality of spring parts (51), the plurality of spring parts (51) being arranged at intervals between the test plate (3) and the base (1), and two ends of the spring parts (51) being connected to the test plate (3) and the base (1) respectively.

3. The pull-off force detection device according to claim 2, wherein: The shock absorbing assembly (5) further comprises: a plurality of rubber blocks (52), wherein the plurality of rubber blocks (52) are spaced apart and arranged between the test plate (3) and the base (1).

4. The pull-off force detection device according to claim 3, wherein: The shock absorbing assembly (5) further comprises: a plurality of air shock absorbers (53), wherein the plurality of air shock absorbers (53) are arranged at intervals between the test plate (3) and the base (1).

5. The pull-off force detection device according to claim 4, wherein: Each of the air shock absorbers (53) is arranged between one of the spring parts (51) and one of the rubber blocks (52).

6. The pull-off force detection device according to claim 1, wherein: Also includes: A display (6) is connected to the tension and compression sensor (2) signal, and the display (6) is used to display the tension data of the tension and compression sensor (2) on the screen of the display (6).

7. The pull-off force detection device according to claim 1, wherein: The tension equipment comprises: a tensile testing machine, a bottom fixed end of which is connected to the tension and compression sensor (2), and a movable crossbeam of the tensile testing machine is used to be connected to the permanent magnetic lifter (4).

8. The pull-off force detection device according to claim 7, wherein: One end of the tension and compression sensor (2) is connected to the base (1), and the other end is provided with a connecting shaft (7), and the connecting shaft (7) is used to be connected to the bottom fixed end of the tensile testing machine.

9. The pull-off force detection device according to claim 1, wherein: The base (1) is detachably connected to the test plate (3) via a plurality of bolts (8).

10. The pull-off force detection device according to claim 9, wherein: The plurality of bolts (8) are arranged circumferentially along the inner side edge of the base (1).

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