Switch linkage rod locking device

Abstract

The utility model relates to a switch linkage rod locking device which comprises an indicating dial, a locking sheet and a taper nut, a longitudinal through outer square hole is formed in the center of the indicating dial, the locking sheet is arranged in the indicating dial and transversely slides, and an inner square hole is formed in the center of the locking sheet corresponding to the outer square hole of the indicating dial. One side edge of the inner square hole obliquely extends downwards towards the center to form a locking part, a locking hole is formed in the position, opposite to the locking part, of the locking piece, a screw hole is formed in the position, below the locking hole, of the indicating dial, the taper nut penetrates through the locking hole to be connected into the screw hole, and the conical surface of the taper nut is tightly matched with the locking hole to pull the locking piece to the locking hole. The locking piece is adopted in the indicating disc to lock the square shaft, when the square shaft penetrates through the indicating disc, the conical surface of the taper nut is matched with the locking hole, and when the taper nut is tightened, the locking piece can move outwards to push the locking part to press the side wall of the square shaft, so that the square shaft is fixed in the indicating disc, the square shaft is prevented from being disengaged, and handle connection is facilitated for operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of components of disconnecting switch, especially a switch linkage rod locking device for locking linkage rod. BACKGROUND

[0002] Disconnecting switch is a kind of switch equipment in circuit play isolating role.The operating mechanism of disconnecting switch is the control mechanism of the contact system of disconnecting switch, and disconnecting switch can be manually operated, and handle needs to be installed when manually operating disconnecting switch, and handle is generally connected with the rotating shaft of operating mechanism by square shaft, and in order to fix square shaft, screw is generally used to be screwed in the side of square shaft to be fixed, to prevent square shaft from coming out, but the screw locked on side is inconvenient to be tightened by screwdriver, and screw can damage square shaft, so it is inconvenient to use. SUMMARY

[0003] In view of the above shortcomings, the utility model provides a switch linkage rod locking device which is simple to lock and stable and reliable.

[0004] In order to achieve the above purpose, the utility model adopts a switch linkage rod locking device, which comprises an indicator disc, a locking piece, a tapered nut, the indicator disc is formed with a longitudinal through outer square hole in the center, the locking piece is arranged to slide horizontally in the indicator disc, the locking piece is formed with an inner square hole corresponding to the outer square hole of the indicator disc in the center, one side of the inner square hole extends obliquely downward to form a locking part toward the center, the locking piece is provided with a locking hole opposite to the locking part, the indicator disc is provided with a threaded hole below the locking hole, the tapered nut is connected in the threaded hole through the locking hole, and the tapered surface of the tapered nut is tightly matched with the locking hole to pull the locking piece to the locking hole.

[0005] The utility model is further provided with a padlock groove formed on the outer side of the indicator disc, a padlock piece arranged on the outer side of the indicator disc, a padlock block formed on the padlock piece, and the padlock block is in and out of the padlock groove to lock and release the circumferential movement of the indicator disc respectively.

[0006] The utility model is further provided with an indicator seat and an indicator cover, a locking groove with one open side is formed between the indicator seat and the indicator cover, the locking piece is arranged to slide in the locking groove, and the locking hole is arranged on one side of the opening.

[0007] The utility model has the advantages that the square shaft is locked by the locking piece in the indicator disc, when the square shaft is inserted in the indicator disc, the locking piece is moved outward when the tapered nut is tightened, the locking part is pressed tightly on the side wall of the square shaft, the square shaft is fixed in the indicator disc, the square shaft is prevented from coming out, and the handle is connected for operation conveniently. The installation direction of the tapered nut is consistent with the direction of the square shaft, so that the tool is sleeved on the tapered nut for tightening operation. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 is the assembly diagram of the embodiment of the utility model.

[0009] Fig. 2 is the assembly explosion drawing of the embodiment of the utility model.

[0010] Fig. 3 is the explosion drawing of the embodiment of the utility model.

[0011] Fig. 4 is the sectional view of the embodiment of the utility model. DETAILED DESCRIPTION

[0012] As Figs. 1-4 shown, the embodiment of the utility model is a switch linkage rod locking device, which is installed on the operating mechanism 9 of the disconnecting switch, and is specifically installed in the upper cover 8 of the operating mechanism 9, and comprises an indicating disc 1, a locking piece 2 and a tapered nut 3, the indicating disc 1 is formed with a longitudinal through outer square hole 13 in the center, the locking piece 2 is arranged to slide transversely in the indicating disc 1, the locking piece 2 is formed with an inner square hole 21 in the center corresponding to the outer square hole 13 of the indicating disc 1, one side of the inner square hole 21 extends obliquely downward to form a locking portion 22, the locking piece 2 is provided with a locking hole 23 on the opposite side of the locking portion 22, the indicating disc 1 is provided with a threaded hole 14 below the locking hole 23, the tapered nut 3 is connected in the threaded hole 14 through the locking hole 23, after the square shaft 4 passes through the outer square hole 13 and the inner square hole 21, the locking piece 2 is pulled to the locking hole 23 through the taper surface 31 of the tapered nut 3 and the locking hole 23, the locking portion 22 locks the square shaft, and the square shaft 4 is prevented from coming out.

[0013] An outside side of the indicating disc 1 is formed with a padlock groove 15, the operating mechanism on the outside of the indicating disc 1 is provided with a padlock piece 5, the padlock piece 5 is formed with a padlock block 51, the padlock block 51 is in and out of the padlock groove 15, and the circumferential movement of the indicating disc 1 is locked and released respectively.

[0014] The indicating disc 1 comprises an indicating seat 11 and an indicating cover 12, a locking groove 10 with one side opening is formed between the indicating seat 11 and the indicating cover 12, the locking piece 2 is arranged to slide in the locking groove 10, and the locking hole 23 is arranged on one side of the opening.

[0015] The preferred embodiment of the utility model in the above embodiment, other obvious changes or combinations are also within the protection scope of the claims.

Claims

1. A switch linkage lever locking device characterized by: The indication disc is provided with a longitudinal through hole in the center, the locking piece is arranged to slide horizontally in the indication disc, the locking piece is provided with an inner square hole in the center corresponding to the outer square hole of the indication disc, one side of the inner square hole extends towards the center and downward to form a locking part, the locking piece is provided with a locking hole opposite to the locking part, the indication disc is provided with a screw hole below the locking hole, the taper nut is connected in the screw hole through the locking hole, and the taper surface of the taper nut is tightly matched with the locking hole to pull the locking piece to the locking hole.

2. The linkage lever lock device according to claim 1, characterized by: An outside side of the indication disc is provided with a padlock slot, the indication disc is provided with a padlock piece outside, the padlock piece is provided with a padlock block, the padlock block is arranged to go in and out in the padlock slot, and the padlock block is arranged to lock and release the circumferential movement of the indication disc respectively.

3. The linkage lever lock device according to claim 1 or 2, characterized by: The indication disc is provided with an indication seat and an indication cover, a locking slot with an open side is formed between the indication seat and the indication cover, the locking piece is arranged to slide in the locking slot, and the locking hole is arranged on one side of the opening.

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