Electromagnetic locking safety device of mining frequency converter

Abstract

The utility model belongs to the technical field of mining equipment, and discloses an electromagnetic locking safety device of a mining frequency converter, which comprises an electromagnetic locking safety device body, the bottom of the electromagnetic locking safety device body is provided with heat dissipation holes, and the back of the electromagnetic locking safety device body is fixedly connected with a driving motor. The other end of the output shaft of the driving motor is fixedly sleeved with a lead screw. Through the arrangement of the driving motor, the lead screw, the movable plate, the connecting rods and the sealing plates, when the driving motor operates, the lead screw rotates to drive the movable plate to move upwards, then the two connecting rods rotate to drive the two sealing plates to move oppositely, and therefore the purpose of sealing the heat dissipation holes is achieved; and corrosion of electromagnetic elements in the electromagnetic locking safety device body caused by the fact that external moisture enters the electromagnetic locking safety device body through the heat dissipation holes is avoided, and the service life of the electromagnetic locking safety device body is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining equipment, specifically an electromagnetic interlocking safety device for a mining frequency converter. Background Technology

[0002] Electromagnetic interlocking is a device to prevent electrical misoperation. It mainly uses electromagnetic principles to lock the operating mechanism of electrical equipment, ensuring that under specific electrical conditions, only operations that conform to predetermined logic can be performed, thereby avoiding electrical accidents caused by misoperation and ensuring the safe operation of the power system.

[0003] In mining environments, flammable and explosive gases such as methane and coal dust are widespread. As high-voltage equipment, the safe operation of mining frequency converters is crucial, and electromagnetic interlocking safety devices are frequently used. While existing electromagnetic interlocking safety devices can achieve basic locking functions in actual use, they generally lack protection for heat dissipation vents. Due to the humid mining environment, if the heat dissipation vents are not sealed when the electromagnetic interlocking safety device is not in use, external moisture will enter the device through the vents, causing corrosion of the electromagnetic components and affecting the device's service life. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to address the above problems. This utility model provides an electromagnetic interlocking safety device for mining frequency converters, which has the advantage of heat dissipation hole protection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetic interlocking safety device for a mining frequency converter, comprising an electromagnetic interlocking safety device body, a heat dissipation hole at the bottom of the electromagnetic interlocking safety device body, a drive motor fixedly connected to the back of the electromagnetic interlocking safety device body, a lead screw fixedly sleeved at the other end of the output shaft of the drive motor, a fixing block movably sleeved on the outer surface of the bottom end of the lead screw, the other end of the fixing block being fixedly connected to the back of the electromagnetic interlocking safety device body, a movable plate threaded onto the outer surface of the lead screw, connecting rods hinged to the left and right sides of the bottom of the movable plate, a sealing plate hinged to the other end of the connecting rod, two sealing plates, the outer surfaces of the two sealing plates being movably connected to the inner wall of the electromagnetic interlocking safety device body.

[0006] As a preferred embodiment of this utility model, a limiting rod is fixedly connected to the back of the electromagnetic locking safety device body, and the outer surface of the limiting rod is movably sleeved with the inner surface of the movable plate.

[0007] As a preferred technical solution of this utility model, mounting holes are provided on both the left and right sides of the front of the electromagnetic locking safety device body. There are two mounting holes, and the two mounting holes are symmetrical about the center of the electromagnetic locking safety device body.

[0008] As a preferred embodiment of this utility model, the electromagnetic locking safety device body has a locking tongue that is movably connected inside, and the locking tongue is cylindrical in shape.

[0009] As a preferred embodiment of this utility model, an unlocking button is movably installed on the left side of the front of the electromagnetic locking safety device body, and an unlocking indicator light located directly below the unlocking button is fixedly connected to the front of the electromagnetic locking safety device body.

[0010] As a preferred embodiment of this utility model, the front of the electromagnetic locking safety device body is movably connected to a pull button located to the right of the unlocking button, and the outer surface of the pull button is rough.

[0011] As a preferred embodiment of this utility model, the front of the electromagnetic locking safety device body is provided with an emergency unlocking hole located to the right of the pull button. A mounting plate is fixedly connected to the front of the electromagnetic locking safety device body above the emergency unlocking hole. A spring is fixedly connected to the top of the inner cavity of the mounting plate, and a pull rod is fixedly connected to the bottom of the spring. The outer surface of the pull rod is movably connected to the inner surface of the mounting plate, and the outer surface of the pull rod is movably connected to the inner wall of the front of the electromagnetic locking safety device body. A baffle is fixedly connected to the back of the pull rod, and the outer surface of the baffle is movably connected to the inner wall of the front of the electromagnetic locking safety device body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a drive motor, lead screw, movable plate, connecting rod and sealing plate, when the drive motor is running, will cause the lead screw to rotate and drive the movable plate to move upward, which in turn causes the two connecting rods to rotate and drive the two sealing plates to move towards each other, thereby achieving the purpose of sealing the heat dissipation hole, preventing external moisture from entering the interior of the electromagnetic interlocking safety device body through the heat dissipation hole and causing corrosion of the electromagnetic components inside the electromagnetic interlocking safety device body, thus improving the service life of the electromagnetic interlocking safety device body.

[0014] 2. This utility model, by setting a spring, a pull rod, and a baffle, uses the spring's restoring force to drive the pull rod downward, which in turn drives the baffle downward, thus achieving the purpose of blocking the emergency unlocking hole. This effectively prevents foreign objects from entering the electromagnetic locking safety device body, avoids device malfunction or misoperation due to interference from foreign objects, and enhances safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the sealing plate of this utility model;

[0018] Figure 4 This is a cross-sectional view of the baffle of this utility model;

[0019] Figure 5 This is a schematic diagram of the tie rod structure of this utility model.

[0020] In the diagram: 1. Electromagnetic interlocking safety device body; 2. Heat dissipation hole; 3. Drive motor; 4. Lead screw; 5. Movable plate; 6. Connecting rod; 7. Sealing plate; 8. Fixing block; 9. Limiting rod; 10. Mounting hole; 11. Lock tongue; 12. Unlock button; 13. Unlock indicator light; 14. Pull button; 15. Emergency unlocking hole; 16. Mounting plate; 17. Spring; 18. Pull rod; 19. Baffle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 5 As shown, this utility model provides an electromagnetic interlocking safety device for a mining frequency converter, including an electromagnetic interlocking safety device body 1. A heat dissipation hole 2 is provided at the bottom of the electromagnetic interlocking safety device body 1. A drive motor 3 is fixedly connected to the back of the electromagnetic interlocking safety device body 1. A lead screw 4 is fixedly sleeved at the other end of the output shaft of the drive motor 3. A fixing block 8 is movably sleeved on the outer surface of the bottom end of the lead screw 4. The other end of the fixing block 8 is fixedly connected to the back of the electromagnetic interlocking safety device body 1. A movable plate 5 is threaded onto the outer surface of the lead screw 4. Connecting rods 6 are hinged to the left and right sides of the bottom of the movable plate 5. A sealing plate 7 is hinged to the other end of the connecting rod 6. There are two sealing plates 7, and the outer surfaces of both sealing plates 7 are movably connected to the inner wall of the electromagnetic interlocking safety device body 1.

[0023] When the drive motor 3 is running, the lead screw 4 will rotate, causing the movable plate 5 to move upward. This, in turn, causes the two connecting rods 6 to rotate, causing the two sealing plates 7 to move towards each other. This achieves the purpose of sealing the heat dissipation hole 2, preventing external moisture from entering the interior of the electromagnetic locking safety device body 1 through the heat dissipation hole 2 and causing corrosion of the electromagnetic components, thus affecting the service life of the electromagnetic locking safety device body 1.

[0024] Among them, the back of the electromagnetic locking safety device body 1 is fixedly connected to a limit rod 9, and the outer surface of the limit rod 9 is movably sleeved with the inner surface of the movable plate 5.

[0025] The design of the limit rod 9 serves to limit the movement of the movable plate 5, ensuring the stability of the lifting and lowering of the movable plate 5.

[0026] The electromagnetic locking safety device body 1 has two mounting holes 10 on both the left and right sides of its front side. The two mounting holes 10 are symmetrical about the center of the electromagnetic locking safety device body 1.

[0027] The design of two mounting holes 10 facilitates the installation and fixation of the electromagnetic interlocking safety device body 1 with bolts.

[0028] The electromagnetic locking safety device body 1 has a locking tongue 11 inside, which is cylindrical in shape.

[0029] The locking tongue 11 is designed to lock the mining frequency converter.

[0030] The electromagnetic locking safety device body 1 has an unlocking button 12 movably installed on the left side of the front side, and an unlocking indicator light 13 located directly below the unlocking button 12 is fixedly connected to the front side of the electromagnetic locking safety device body 1.

[0031] The unlock button 12 is designed as the starting component to perform the unlocking operation; the unlock indicator light 13 is designed to intuitively display the current unlocking status of the electromagnetic locking safety device body 1.

[0032] Among them, the front of the electromagnetic locking safety device body 1 is movably connected to a pull button 14 located to the right of the unlocking button 12, and the outer surface of the pull button 14 is rough.

[0033] The rough outer surface of the lever 14 makes it easier for the operator to grip the lever 14. Pushing the lever 14 to the left will cause the locking tongue 11 to move to the left to unlock.

[0034] The electromagnetic locking safety device body 1 has an emergency unlocking hole 15 located to the right of the pull button 14 on its front side. The front side of the electromagnetic locking safety device body 1 is fixedly connected to a mounting plate 16 located directly above the emergency unlocking hole 15. A spring 17 is fixedly connected to the top of the inner cavity of the mounting plate 16. A pull rod 18 is fixedly connected to the bottom of the spring 17. The outer surface of the pull rod 18 is movably connected to the inner surface of the mounting plate 16. The outer surface of the pull rod 18 is movably connected to the inner wall of the front side of the electromagnetic locking safety device body 1. A baffle 19 is fixedly connected to the back side of the pull rod 18. The outer surface of the baffle 19 is movably connected to the inner wall of the front side of the electromagnetic locking safety device body 1.

[0035] Pulling the lever 18 upwards will compress the spring 17 and cause the baffle 19 to move upwards. When the baffle 19 moves above the emergency unlocking hole 15, it will release the sealing effect on the emergency unlocking hole 15, thus achieving the purpose of protecting the emergency unlocking hole 15.

[0036] Working principle and usage process of this utility model:

[0037] Because of the humid environment in the mine, when the electromagnetic interlocking safety device body 1 is idle, starting the drive motor 3 will cause the lead screw 4 to rotate, driving the movable plate 5 to move upward. This will cause the two connecting rods 6 to rotate, driving the two sealing plates 7 to move towards each other, thereby achieving the purpose of sealing the heat dissipation hole 2. This prevents external moisture from entering the interior of the electromagnetic interlocking safety device body 1 through the heat dissipation hole 2 and causing corrosion of the electromagnetic components, thus improving the service life of the electromagnetic interlocking safety device body 1.

[0038] To prevent foreign objects from entering the electromagnetic locking safety device body 1, the spring 17 restores the tension of the pull rod 18, which in turn moves the baffle 19 downward, thus blocking the emergency unlocking hole 15. This prevents device malfunction or misoperation due to interference from foreign objects and enhances safety.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic interlocking safety device for a mining frequency converter, comprising an electromagnetic interlocking safety device body (1), characterized in that: The electromagnetic locking safety device body (1) has a heat dissipation hole (2) at the bottom. A drive motor (3) is fixedly connected to the back of the electromagnetic locking safety device body (1). A lead screw (4) is fixedly sleeved at the other end of the output shaft of the drive motor (3). A fixing block (8) is movably sleeved on the outer surface of the bottom end of the lead screw (4). The other end of the fixing block (8) is fixedly connected to the back of the electromagnetic locking safety device body (1). A movable plate (5) is threaded onto the outer surface of the lead screw (4). A connecting rod (6) is hinged on both the left and right sides of the bottom of the movable plate (5). A sealing plate (7) is hinged to the other end of the connecting rod (6). There are two sealing plates (7). The outer surfaces of the two sealing plates (7) are movably connected to the inner wall of the electromagnetic locking safety device body (1).

2. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: The back of the electromagnetic locking safety device body (1) is fixedly connected to a limiting rod (9), and the outer surface of the limiting rod (9) is movably sleeved with the inner surface of the movable plate (5).

3. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: The electromagnetic locking safety device body (1) has mounting holes (10) on both the left and right sides of its front side. There are two mounting holes (10), and the two mounting holes (10) are symmetrical about the center of the electromagnetic locking safety device body (1).

4. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: The electromagnetic locking safety device body (1) is internally fitted with a locking tongue (11), which is cylindrical in shape.

5. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: An unlocking button (12) is movably installed on the left side of the front of the electromagnetic locking safety device body (1), and an unlocking indicator light (13) located directly below the unlocking button (12) is fixedly connected to the front of the electromagnetic locking safety device body (1).

6. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: The front of the electromagnetic locking safety device body (1) is movably connected to a lever (14) located to the right of the unlocking button (12), and the outer surface of the lever (14) is rough.

7. The electromagnetic interlocking safety device for a mining frequency converter according to claim 1, characterized in that: The front of the electromagnetic locking safety device body (1) has an emergency unlocking hole (15) located to the right of the pull button (14). The front of the electromagnetic locking safety device body (1) is fixedly connected to a mounting plate (16) located directly above the emergency unlocking hole (15). A spring (17) is fixedly connected to the top of the inner cavity of the mounting plate (16). A pull rod (18) is fixedly connected to the bottom of the spring (17). The outer surface of the pull rod (18) is movably connected to the inner surface of the mounting plate (16). The outer surface of the pull rod (18) is movably connected to the inner wall of the front of the electromagnetic locking safety device body (1). A baffle (19) is fixedly connected to the back of the pull rod (18). The outer surface of the baffle (19) is movably connected to the inner wall of the front of the electromagnetic locking safety device body (1).

Images