Feed switch four-interlocking device

Abstract

The utility model discloses a four-interlocking device of a feed switch, which comprises a pinch plate, a hook arranged on the left side of the pinch plate, the pinch plate hung on a rotating shaft of the feed switch through the hook, a door spindle hinged to the right side of the pinch plate, a locking buckle lug arranged on the door spindle corresponding to a limiting clamping groove of the feed switch, and a lifting pin arranged on one side of the locking buckle lug on the back of the pinch plate. And when the pinch plate is rotated to completely shield the feed switch, the lifting pin props against a power failure locking rod of the feed switch. By designing the locking fastener, the practical problem that mistaken power transmission and wrong power transmission are easy to occur during power failure locking of the feeder switch is solved, the power transmission at the power failure is ensured, the influence caused by mistaken power transmission and wrong power transmission is completely eradicated, the productivity is improved, and the safety production is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment maintenance, and in particular relates to a four-interlocking device for a feed switch. Background Art

[0002] With the development of mine mechanization, many problems will occur in electrical equipment during the actual production process of mines, requiring power outages for maintenance. The traditional operation method is to disconnect the power supply of the feeder switch and hang a power outage sign to cut off the power. However, in many cases, the location of the electrical equipment for maintenance is far away from the location of the feeder switch, and the maintenance personnel cannot always guard the feeder switch, resulting in other people mistakenly sending power or sending the wrong power. This leaves a major hidden danger for the maintenance of underground electrical equipment and threatens the lives of maintenance personnel at all times. Utility Model Content

[0003] The utility model aims to provide a four-interlock device for a feed switch, which realizes four-interlock of the switch and prevents erroneous power transmission and wrong power transmission.

[0004] The technical solution adopted by the utility model is a four-interlocking device for a feed switch, comprising a buckle plate, a hook is provided on the left side of the buckle plate, the buckle plate is hung on the rotating shaft of the feed switch through the hook, the right side of the buckle plate is hinged to the door shaft, a locking buckle ear is provided on the door shaft corresponding to the limit slot of the feed switch, and a push pin is provided on the back side of the buckle plate at one side of the locking buckle ear. When the buckle plate is rotated to completely cover the feed switch, the push pin pushes against the power-off locking rod of the feed switch.

[0005] Preferably, the above-mentioned locking buckle ear includes a fixing plate, the outer end of the fixing plate is respectively connected to the upper ear plate and the lower ear plate toward the back of the buckle plate, there is a cavity for accommodating the limiting slot between the upper ear plate and the lower ear plate, and corresponding ear holes are provided on the upper ear plate and the lower ear plate, and the locking pin passes through the ear holes to fix the locking buckle ear and the limiting slot.

[0006] Preferably, a warning mark groove is provided on the front side of the gusset plate, and a warning slogan is placed in the warning mark groove.

[0007] Compared with the prior art, the beneficial effect of the utility model is that after the four-interlock device of the feeder switch is put into use, the practical problem of easy mis-powering and wrong power supply when the feeder switch is locked during power outage is solved by designing locking fasteners, thereby ensuring that whoever cuts off the power will supply the power, eliminating the impact caused by mis-powering and wrong power supply, improving productivity, ensuring safe production, facilitating operation, and improving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the back structure of the four-interlock device of the feeder switch;

[0009] Figure 2 This is a schematic diagram of the front structure of the four-interlocking device of the feeder switch. DETAILED DESCRIPTION

[0010] The present invention will be further explained below in conjunction with the accompanying drawings to facilitate better understanding by those skilled in the art.

[0011] Example 1

[0012] like Figure 1-2 As shown, a four-interlocking device for a feed switch includes a buckle plate 1, which is made of stainless steel or iron plate. The size of the buckle plate 1 is equivalent to the size of the front face of the feed switch. A hook 6 is provided on the left side of the buckle plate 1, and the buckle plate 1 is hung on the rotating shaft of the feed switch through the hook 6. The right side of the buckle plate 1 is hinged to a door shaft 2, and a locking buckle ear 3 is provided on the door shaft 2 corresponding to the limit slot of the feed switch. A push pin 4 is provided on the back side of the buckle plate 1 at one side of the locking buckle ear 3. When the buckle plate 1 is rotated to completely cover the feed switch, the push pin 4 pushes against the power-off locking rod of the feed switch, so that the switch cannot be rotated to achieve switch locking, thereby preventing the problem of mistaken power supply or wrong power supply.

[0013] The above-mentioned locking buckle ear 3 includes a fixing plate 301, and the outer end of the fixing plate 301 is respectively connected to the upper ear plate 302 and the lower ear plate 303 toward the back of the buckle plate 1, and there is a cavity for accommodating the limiting card slot between the upper ear plate 302 and the lower ear plate 303, and the upper ear plate 302 and the lower ear plate 303 are correspondingly provided with ear holes 304, and the locking pin 5 passes through the ear hole 304 to fix the locking buckle ear 3 and the limiting card slot.

[0014] A warning sign slot 7 is provided on the front side of the gusset plate 1, and the top of the warning sign slot 7 is open for displaying warning slogans to remind staff.

[0015] Working principle: hang the four-interlock device hook 6 of the feed switch on the feed switch shaft, rotate the buckle plate 1 to buckle the start and stop button of the feed switch, align the device top pin 4 with the switch locking rod, rotate the locking ear 3 to buckle it in the limit card slot, insert the lock pin 5 through the ear hole 304 to lock it, and complete the locking of the feed switch. The above process only requires one worker to operate, and the locking work of a switch only takes 1 to 2 minutes, which is easy to operate, safe and reliable.

[0016] The above-mentioned embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit and principle of the utility model, various modifications and improvements made by those skilled in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A four-interlocking device for a feed switch, characterized in that: The invention comprises a gusset plate (1), a hook (6) is provided on the left side of the gusset plate (1), the gusset plate (1) is hung on the rotating shaft of the feed switch through the hook (6), the gusset plate (1) is hinged on the door shaft (2) on the right side, a locking buckle ear (3) is provided on the door shaft (2) corresponding to the limit slot of the feed switch, and a push pin (4) is provided on the back side of the gusset plate (1) at one side of the locking buckle ear (3), and when the gusset plate (1) is rotated to completely cover the feed switch, the push pin (4) pushes against the power-off locking rod of the feed switch.

2. A feed switch four-interlocking device according to claim 1, characterized in that: The locking buckle ear (3) comprises a fixing plate (301), the outer end of the fixing plate (301) is respectively connected to an upper ear plate (302) and a lower ear plate (303) on the back side of the buckle plate (1), a cavity for accommodating the limit card slot is provided between the upper ear plate (302) and the lower ear plate (303), and ear hanging holes (304) are correspondingly provided on the upper ear plate (302) and the lower ear plate (303), and the locking pin (5) passes through the ear hanging hole (304) to fix the locking buckle ear (3) and the limit card slot.

3. A feed switch four-interlock device according to claim 1, characterized in that: The front side of the gusset plate (1) is provided with a warning sign groove (7), and a warning sign is placed in the warning sign groove (7).

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