Anti-maloperation electromagnetic counting device

Abstract

The utility model discloses an anti-maloperation electromagnetic counting device, which comprises a support frame, a rotating shaft rotationally arranged at the top of the support frame, a gear arranged on the outer side of the rotating shaft, a framework arranged in the support frame, an iron core arranged on the framework in a penetrating manner, a coil arranged on the outer side of the iron core, and a magnet yoke arranged on the framework and connected with one end of the iron core, a plurality of fixing blocks are integrally formed on the top of the supporting frame, a shifting fork is rotatably installed on the top of the supporting frame, hooks are arranged on one fixing block and the shifting fork, a tension spring is installed between the two hooks, and an empty groove is formed in the shifting fork in a penetrating mode. And the shifting fork is made of a plastic material and is lighter in weight and small in inertia, so that the tension spring can limit the shifting fork more easily, pointer jumping caused by rotation of the shifting fork in the transportation process is prevented, re-debugging is not needed when the shifting fork is used after transportation, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic counting, in particular to an electromagnetic counting device to prevent misoperation. Background Art

[0002] The electromagnetic counting device is an electrical device connected in series under the lightning arrester to record the number of times the lightning arrester operates, grasp the laws of lightning activity, continuously improve the reliability of lightning protection of power transmission and distribution equipment, and monitor the life of the lightning arrester.

[0003] Chinese patent application number 200520034553.5 discloses a double-pointer electromagnetic counting device, including an integral frame with fixed claws on both sides of a center plate, a counting mechanism assembly including counting, carry and intermediate gears, a limit wheel, a shifting plate and double pointers, a reading disk, an electromagnetic coil, an armature with a shift fork and a return spring, and a magnetic yoke connecting the iron core and the armature.

[0004] The armature and the shift fork of the above utility model are stamped from electrical pure iron, which are heavy and have large inertia. The return spring is difficult to restrict them, and they are prone to movement during transportation, which causes the pointer to jump. They also need to be debugged when used after transportation, which is quite troublesome. Utility Model Content

[0005] The purpose of the utility model is to provide an electromagnetic counting device to prevent misoperation, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-misoperation electromagnetic counting device, comprising a support frame, a rotating shaft rotatably installed on the top of the support frame, a gear arranged outside the rotating shaft, a frame installed inside the support frame, an iron core passed through the frame, a coil arranged outside the iron core, and a yoke installed on the frame and connected to one end of the iron core, the top of the support frame is integrally formed with a plurality of fixed blocks, a shift fork is rotatably installed on the top of the support frame, one of the fixed blocks and the shift fork is provided with a hook, a tension spring is installed between the two hooks, an empty slot is penetrated through the shift fork, an armature is movably installed inside the support frame, a transmission part for pushing the shift fork to rotate is provided on the top of the armature, the transmission part passes through the support frame and extends into the empty slot, a receiving slot is provided inside the support frame, and a movable part matching the receiving slot is provided at the bottom of the armature.

[0007] As a preferred solution of the utility model, the material of the shift fork is plastic, and the material of the armature is electrical pure iron.

[0008] As a preferred solution of the present invention, the width of the accommodating groove is greater than the width of the movable part.

[0009] As a preferred solution of the utility model, a pushing portion for pushing the gear to rotate is provided on one side of the shift fork, and a rotation-stopping portion for preventing the gear from rotating is also provided on the shift fork.

[0010] As a preferred solution of the utility model, a positioning column is provided on one side of the frame, a positioning groove matched with the positioning column is opened on the support frame, and a limiting screw is threadedly connected to one side of the frame close to the positioning groove.

[0011] As a preferred solution of the utility model, a reading disk is fixedly mounted on the top of the fixed block by screws, and a pointer is mounted on the top of the rotating shaft and above the reading disk.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure, low production cost, and is easy to assemble. By making the shift fork and the armature adopt a split structure, and the shift fork is made of plastic material, it is lighter and has smaller inertia, so that the tension spring can more easily limit the shift fork, preventing the shift fork from rotating during transportation and causing the pointer to jump. There is no need to debug again when using it after transportation, so it is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is the front view of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model after removing the reading disk and the pointer;

[0016] Figure 4 This is a schematic diagram of the structure of the support frame of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the framework of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the armature of the utility model.

[0019] In the figure: 1. support frame; 2. frame; 3. yoke; 4. rotating shaft; 5. reading plate; 6. pointer; 7. gear; 8. fork; 9. fixing block; 10. limit screw; 11. positioning column; 12. tension spring; 13. armature; 14. iron core; 15. coil; 16. anti-rotation part; 17. pushing part; 18. empty slot; 19. transmission part; 20. hook; 21. accommodating slot; 22. movable part; 23. positioning slot. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1 to 6 The utility model provides a technical solution: an anti-misoperation electromagnetic counting device, comprising a support frame 1, a rotating shaft 4 rotatably installed on the top of the support frame 1, a gear 7 arranged on the outside of the rotating shaft 4, a skeleton 2 installed inside the support frame 1, an iron core 14 passed through the skeleton 2, a coil 15 arranged on the outside of the iron core 14, and a yoke 3 installed on the skeleton 2 and connected to one end of the iron core 14, the yoke 3 plays a role in guiding and concentrating the magnetic field to enhance the magnetic field strength and improve the electromagnetic attraction force, thereby reducing the amount of enameled wire in the coil 15 and reducing the cost, a plurality of fixed blocks 9 are integrally formed on the top of the support frame 1, a shift fork 8 is rotatably installed on the top of the support frame 1, the shift fork 8 is used to push the gear 7 to rotate, one of the fixed blocks 9 and the shift fork 8 are provided with a hook 20, a tension spring 12 is installed between the two hooks 20, and the tension spring 12 is used to enable the shift fork 8 to automatically To reset, an empty slot 18 is provided on the shift fork 8, and an armature 13 is movably installed inside the support frame 1. The shift fork 8 and the armature 13 adopt a split structure, and the shift fork 8 is made of plastic material, which is lighter in weight, making it easier for the tension spring 12 to limit the shift fork 8 to prevent the shift fork 8 from rotating during transportation and causing the pointer 6 to jump. There is no need to debug again when using it after transportation, which is convenient to use. A transmission part 19 for pushing the shift fork 8 to rotate is provided on the top of the armature 13, and a through slot is provided on the support frame 1 to facilitate the transmission part 19 to pass through the support frame 1, and the transmission part 19 passes through the support frame 1 and extends into the empty slot 18. A accommodating slot 21 is provided inside the support frame 1, and a movable part 22 cooperating with the accommodating slot 21 is provided at the bottom of the armature 13. The movable part 22 cooperates with the accommodating slot 21 to limit the armature 13, so that the armature 13 can swing but cannot be separated from the support frame 1.

[0022] The material of the shift fork 8 is plastic, which is light and has small inertia, so that the tension spring 12 can more easily restrict the shift fork 8 to prevent the shift fork 8 from moving during transportation and causing the pointer 6 to jump. The material of the armature 13 is electrical pure iron.

[0023] The width of the receiving groove 21 is greater than the width of the movable portion 22 , so that the movable portion 22 can move in the receiving groove 21 , thereby allowing the armature 13 to swing without being stuck.

[0024] A pushing portion 17 for pushing the gear 7 to rotate is provided on one side of the shift fork 8 , and a rotation-stopping portion 16 for preventing the gear 7 from rotating is also provided on the shift fork 8 .

[0025] Among them, a positioning column 11 is provided on one side of the skeleton 2, and a positioning groove 23 matching the positioning column 11 is opened on the support frame 1. A limiting screw 10 is threadedly connected to the side of the skeleton 2 close to the positioning groove 23. The positioning column 11 and the positioning groove 23 are used to position the skeleton 2, making the installation of the skeleton 2 more stable, and the limiting screw 10 is used to block the skeleton 2 to prevent the skeleton 2 from moving, so as to fix the skeleton 2, making the installation steps of the skeleton 2 very simple and reducing the difficulty of assembly.

[0026] Among them, a reading disk 5 is fixed on the top of the fixed block 9 by screws, and a pointer 6 is installed on the top of the rotating shaft 4 and above the reading disk 5. The pointer 6 cooperates with the reading disk 5 to facilitate the staff to read the number of times the lightning arrester is actuated.

[0027] Specifically, when the lightning arrester is activated, the coil 15 is energized to generate a magnetic field, and the coil 15 attracts the armature 13, and the armature 13 swings toward the direction of the iron core 14 until the armature 13 is close to the iron core 14, and the armature 13 rotates the hook 20 through the transmission part 19, and the hook 20 rotates the pushing part 17, and the pushing part 17 rotates the gear 7. The gear 7 rotates the pointer 6 through the rotating shaft 4, and the tension spring 12 is stretched at the same time. Then the coil 15 is de-energized, and the tension spring 12 resets the fork 8 to reset and rotate, and the fork 8 drives the stop part 16 to rotate, and the stop part 16 contacts the gear 7 to prevent the gear 7 from rotating, thereby preventing the pointer 6 from rotating. When assembling the skeleton 2, it is only necessary to align the positioning column 11 with the positioning slot 23, install the skeleton 2 into the support frame 1, and then tighten the limit screw 10 to complete the assembly of the skeleton 2. The assembly is very convenient.

[0028] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" 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 the present invention 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 should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0030] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0031] 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 electromagnetic counting device for preventing malfunction, comprising a support frame (1), a rotating shaft (4) rotatably mounted on the top of the support frame (1), a gear (7) arranged outside the rotating shaft (4), a frame (2) mounted inside the support frame (1), an iron core (14) passing through the frame (2), a coil (15) arranged outside the iron core (14), and a yoke (3) mounted on the frame (2) and connected to one end of the iron core (14), characterized in that: The top of the support frame (1) is integrally formed with a plurality of fixed blocks (9); a shift fork (8) is rotatably mounted on the top of the support frame (1); a hook (20) is provided on one of the fixed blocks (9) and the shift fork (8); a tension spring (12) is installed between the two hooks (20); an empty slot (18) is penetrated through the shift fork (8); an armature (13) is movably mounted inside the support frame (1); a transmission part (19) for driving the shift fork (8) to rotate is provided at the top of the armature (13); the transmission part (19) passes through the support frame (1) and extends into the empty slot (18); a receiving slot (21) is provided inside the support frame (1); and a movable part (22) matching the receiving slot (21) is provided at the bottom of the armature (13).

2. The anti-misoperation electromagnetic counting device according to claim 1, characterized in that: The material of the shift fork (8) is plastic, and the material of the armature (13) is electrical pure iron.

3. The anti-maloperation electromagnetic counting device according to claim 1, characterized in that: The width of the accommodating groove (21) is greater than the width of the movable portion (22).

4. The anti-maloperation electromagnetic counting device according to claim 1, characterized in that: A pushing portion (17) for pushing the gear (7) to rotate is provided on one side of the shift fork (8), and a rotation-stopping portion (16) for stopping the gear (7) from rotating is also provided on the shift fork (8).

5. The anti-maloperation electromagnetic counting device according to claim 1, characterized in that: A positioning column (11) is provided on one side of the frame (2); a positioning groove (23) matching with the positioning column (11) is provided on the support frame (1); and a limiting screw (10) is threadedly connected to one side of the frame (2) close to the positioning groove (23).

6. The anti-maloperation electromagnetic counting device according to claim 1, characterized in that: A reading disk (5) is fixedly mounted on the top of the fixed block (9) by means of screws, and a pointer (6) is mounted on the top of the rotating shaft (4) and above the reading disk (5).

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