Safe self-locking disconnecting link

Abstract

The utility model relates to the technical field of disconnecting links, and discloses a safe self-locking disconnecting link, which comprises a disconnecting link base and a disconnecting link mounting seat mounted on the upper surface of the disconnecting link base, a connecting mechanism used for connecting and disconnecting a circuit is arranged on the disconnecting link mounting seat, and self-locking mechanisms used for locking the connecting mechanism are symmetrically arranged on the upper surface of the disconnecting link base; the connecting mechanism comprises a connecting frame, special-shaped rods are fixedly connected to the two ends of the connecting frame, and a clamping groove is formed in one side of each special-shaped rod; after the connecting mechanism is turned over, closed and communicated with a circuit, the clamping block is quickly clamped into the clamping groove of the special-shaped rod under the action of the reset spring, so that the position of the connecting mechanism is positioned, the self-locking function of the disconnecting link is completed, and when the circuit is short-circuited, the self-locking function makes contact with limiting of the connecting mechanism, so that the circuit is disconnected while the connecting mechanism is reset; the knife switch is protected from being damaged, and the service life of the knife switch is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of knife switch, concretely is a safe self -locking knife switch. BACKGROUND

[0002] The knife switch is a kind of manual switch of power equipment, alias knife, generally more for low voltage, there are single-phase knife switch and three-phase knife switch, according to the difference of application, there are various specifications, generally voltage and current are marked, such as 220 volts, 16A, meaning is suitable for 220 volts voltage, current is not more than 16 ampere, generally there is porcelain base, plastic cover, copper component composition, upper part is the wire inlet, lower part is the wire outlet, middle part is designed with the installation fuse part;

[0003] The existing knife switch is adjusted to the position of blade by manual moving handle by staff in use, after using multiple times, it can cause the connection between knife switch and blade to be loose, cause poor contact in the use process of knife switch, to cause equipment to appear fault, therefore we need to propose a safe self -locking knife switch. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a safe self -locking knife switch, increases self -locking structure, makes the blade after closing can be connected closely with knife switch, to guarantee the stability in the use process of knife switch, can simultaneously release the locking of blade when current short circuit, to quickly power off knife switch, improve the service life of knife switch, to solve the problems in the above background technique.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a safe self -locking knife switch, including:

[0006] Knife switch base and knife switch mounting seat installed on the upper surface of knife switch base;

[0007] The connecting mechanism for circuit on-off is arranged on the knife switch mounting seat, and the upper surface of the knife switch base is symmetrically provided with a self-locking mechanism for locking the connecting mechanism;

[0008] The connecting mechanism includes a connecting frame, the two ends of the connecting frame are fixedly connected with profiled rods, and the side of the profiled rod is provided with a clamping groove;

[0009] The self-locking mechanism includes a fixed block, the side of the fixed block is provided with a fan-shaped slot for the rotation of the profiled rod, one side of the fan-shaped slot is provided with a T-shaped hole, one end of the T-shaped hole is provided with a stepped hole, a clamping block is slidably arranged in the T-shaped hole, and one end of the clamping block is inserted into the clamping groove.

[0010] Preferably, the stepped hole inner cavity is provided with an electromagnet and a connecting rod at two ends respectively, one end of the connecting rod is arranged in the T-shaped hole and fixedly connected to one end of the clamping block, and the outer side of the connecting rod is sleeved with a reset spring located in the T-shaped hole.

[0011] Preferably, one end of the clamping block is provided with a round plate sliding in the T-shaped hole, and the round plate abuts against the reset spring, one end of the reset spring abuts against the end of the T-shaped hole away from the end of the fan-shaped groove, and the end of the T-shaped hole connected with the fan-shaped groove is square-shaped.

[0012] Preferably, the connecting frame is provided with a limiting column fixedly connected to the opposite end of the two groups of special-shaped rods, the limiting column is provided with a reset torsion spring, and the upper surface of the knife gate base is provided with two groups of hinge seats for rotary installation of the connecting frame.

[0013] Preferably, the lower surface of the connecting frame is fixedly connected with a plurality of positioning sleeve pipes, and the plurality of positioning sleeve pipes are arranged at equal intervals.

[0014] Preferably, the upper surface of the connecting frame is fixedly connected with a handle in the middle, the connecting frame is arranged in the shape of, each positioning sleeve pipe is inserted with a connecting blade, and the knife gate mounting seat is provided with a plurality of sliding grooves for sliding arrangement of the plurality of connecting blades.

[0015] Preferably, one end of each sliding groove is provided with a conductive clamping piece for clamping the connecting blade, and the sliding groove is provided with a connecting shaft for rotary arrangement of the plurality of connecting blades, and the connecting shaft is fixedly connected to the inside of the knife gate mounting seat.

[0016] Preferably, one side of the knife gate base is provided with an incoming power lead electrically connected with the plurality of connecting blades, and the other side of the knife gate base is provided with an outgoing power lead electrically connected with the plurality of conductive clamping pieces.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model mainly through the cooperation between connecting mechanism and self locking mechanism, after the connecting mechanism is turned to close the communication circuit, the clamping block is quickly clamped into the clamping groove of the special-shaped rod under the action of the reset spring, so that the position of the connecting mechanism is positioned, the self locking function of the knife gate is completed, when the circuit is short-circuited, the self locking function will contact the limiting of the connecting mechanism, so that the connecting mechanism resets and the circuit is disconnected at the same time, the knife gate is protected from being damaged, and the service life of the knife gate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the connecting mechanism structure schematic view of the utility model;

[0021] Figure 3 It is the connecting blade structure schematic view of the utility model;

[0022] Figure 4 It is the self locking mechanism structure schematic view of the utility model.

[0023] In the drawing: 1, the knife switch base; 2, the knife switch mounting seat; 3, the slide; 4, the conducting clamp; 5, the connecting mechanism; 51, the connecting frame; 52, the handle; 53, the positioning sleeve; 54, the connecting blade; 55, the connecting shaft; 56, the limiting column; 57, the special-shaped rod; 58, the clamping groove; 59, the reset torsional spring; 6, the self locking mechanism; 61, the fixed block; 62, the fan-shaped slot; 63, the T-shaped hole; 64, the stepped hole; 65, the electromagnet; 66, the connecting rod; 67, the clamping block; 68, the reset spring; 7, the hinge base; 8, the incoming electric wire; 9, the outgoing electric wire. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme: a safe self locking knife switch, comprising:

[0026] The knife switch base 1 and the knife switch mounting seat 2 installed on the upper surface of the knife switch base 1;

[0027] The connecting mechanism 5 for circuit on-off is arranged on the knife switch mounting seat 2, and the upper surface of the knife switch base 1 is symmetrically provided with the self locking mechanism 6 for locking the connecting mechanism 5;

[0028] The connecting mechanism 5 includes the connecting frame 51, and the special-shaped rod 57 is fixedly connected to both ends of the connecting frame 51, and the clamping groove 58 is formed in one side of the special-shaped rod 57;

[0029] The self locking mechanism 6 includes the fixed block 61, and the fan-shaped slot 62 for the rotation of the special-shaped rod 57 is formed in one side of the fixed block 61, and the T-shaped hole 63 is formed in one side of the fan-shaped slot 62, and the stepped hole 64 is formed in one end of the T-shaped hole 63, and the clamping block 67 is slidably arranged in the T-shaped hole 63, and one end of the clamping block 67 is inserted into the clamping groove 58.

[0030] The two ends of the inner cavity of the stepped hole 64 are respectively provided with an electromagnet 65 and a connecting rod 66, one end of the connecting rod 66 is arranged in the T-shaped hole 63 and fixedly connected to one end of a clamping block 67, the outer side of the connecting rod 66 is sleeved with a reset spring 68 located in the T-shaped hole 63, and the connecting rod 66 is adsorbed by the electromagnet 65 to facilitate the position adjustment of the clamping block 67, so as to release the restriction of the special-shaped rod 57, facilitate the quick disconnection of the knife switch, and improve the service life of the knife switch.

[0031] One end of the clamping block 67 is provided with a round plate sliding in the T-shaped hole 63, and the round plate abuts against the reset spring 68, one end of the reset spring 68 abuts against the end of the T-shaped hole 63 away from the fan-shaped groove 62, and the end of the T-shaped hole 63 connected with the fan-shaped groove 62 is square-shaped, and through the shape design of the clamping block 67, the reset spring 68 is matched with the clamping groove 58, and the stability of the movement of the clamping block 67 is ensured.

[0032] The opposite end of the connecting frame 51 to the two groups of special-shaped rods 57 is fixedly connected with a limiting column 56, the limiting column 56 is provided with a reset torsion spring 59, and the upper surface of the knife switch base 1 is provided with two groups of hinge seats 7 for the rotating installation of the connecting frame 51, the hinge seat 7 facilitates the quick installation of the connecting mechanism 5, and the reset torsion spring 59 can quickly separate the connecting mechanism 5 from the conductive clamp plate 4.

[0033] The lower surface of the connecting frame 51 is fixedly connected with a plurality of positioning sleeve pipes 53, and the plurality of positioning sleeve pipes 53 are arranged at equal intervals, and the plurality of positioning sleeve pipes 53 improve the stability of the installation of the connecting blade 54, thereby ensuring the stability of the power-on circuit.

[0034] The upper surface of the connecting frame 51 is fixedly connected with a handle 52 in the middle, each group of positioning sleeve pipes 53 is inserted with a connecting blade 54, and the knife switch mounting seat 2 is provided with a slide 3 for slidingly arranging a plurality of connecting blades 54, the slide 3 can limit the moving position of the connecting blade 54, thereby facilitating the opening and closing of the knife switch, and the handle 52 and the connecting frame 51 are both insulating, facilitating manual operation.

[0035] One end of each group of slides 3 is provided with a conductive clamp plate 4 for clamping the connecting blade 54, and the plurality of slides 3 are provided with a connecting shaft 55 for rotatably arranging a plurality of connecting blades 54, and the connecting shaft 55 is fixedly connected to the inside of the knife switch mounting seat 2, the conductive clamp plate 4 can be quickly combined with the connecting blade 54, the contact area with the connecting blade 54 is increased, thereby ensuring the stability of the conduction.

[0036] One side of the knife switch base 1 is provided with an incoming power lead 8 electrically connected with a plurality of connecting blades 54, and the other side of the knife switch base 1 is provided with an outgoing power lead 9 electrically connected with a plurality of conductive clamp plates 4, and the incoming power lead 8 and the outgoing power lead 9 facilitate the connection with the electrical elements outside.

[0037] When the circuit is closed, the worker turns the connecting frame 51 through the handle 52, and then the multiple sets of connecting blades 54 are turned by 90 degrees around the connecting shaft 55, so that one end of the connecting blade 54 is clamped on the conductive clamp 4, and meanwhile the special-shaped rod 57 is turned from the vertical state to the horizontal state in the arc-shaped slot, and the clamping block 67 is clamped into the clamping groove 58 under the elastic action of the reset spring 68, so that the positioning of the special-shaped rod 57 is completed, and the loosening between the connecting blade 54 and the conductive clamp 4 after long-time use is avoided; when the circuit is short-circuited, the electromagnet 65 is electrified, so that the magnetic adsorption connecting rod 66 is generated, the connecting rod 66 drives the clamping block 67 to compress the reset spring 68, so that the clamping block 67 is separated from the clamping groove 58, the connecting frame 51 is reset under the action of the reset torsional spring 59, so that the connecting blade 54 is separated from the conductive clamp 4, the knife gap is powered off, and the protection effect of the knife gap is improved, and the service life of the knife gap is improved.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A safety interlock bolt, characterized in that, Include: The knife switch base (1), and the knife switch mounting seat (2) installed on the upper surface of the knife switch base (1); The upper surface of the knife switch base (1) is provided with a connecting mechanism (5) for circuit on-off, and the upper surface of the knife switch base (1) is provided with a self-locking mechanism (6) for locking the connecting mechanism (5); The connecting mechanism (5) comprises a connecting frame (51), and the two ends of the connecting frame (51) are fixedly connected with special-shaped rods (57), and one side of the special-shaped rod (57) is provided with a clamping groove (58); The self-locking mechanism (6) comprises a fixed block (61), and one side of the fixed block (61) is provided with a fan-shaped groove (62) for rotatably arranging the special-shaped rod (57), one side of the fan-shaped groove (62) is provided with a T-shaped hole (63), one end of the T-shaped hole (63) is provided with a stepped hole (64), and the T-shaped hole (63) is slidably provided with a clamping block (67), and one end of the clamping block (67) is inserted into the clamping groove (58).

2. A safety interlock lock according to claim 1 wherein: The two ends of the inner cavity of the stepped hole (64) are respectively provided with an electromagnet (65) and a connecting rod (66), one end of the connecting rod (66) is arranged in the T-shaped hole (63) and fixedly connected to one end of the clamping block (67), and the outer side of the connecting rod (66) is sleeved with a reset spring (68) located in the T-shaped hole (63).

3. A safety interlock lock according to claim 2 wherein: One end of the clamping block (67) is provided with a round plate that slides in the T-shaped hole (63), and the round plate abuts against the reset spring (68), one end of the reset spring (68) abuts against the end of the T-shaped hole (63) away from the fan-shaped groove (62), and the end of the T-shaped hole (63) connected with the fan-shaped groove (62) is square-shaped.

4. A safety interlock bolt according to claim 3 wherein: The opposite end of the connecting frame (51) to the two groups of special-shaped rods (57) is fixedly connected with a limiting column (56), the limiting column (56) is provided with a reset torsional spring (59), and the upper surface of the knife switch base (1) is provided with two groups of hinge seats (7) for rotatably arranging the connecting frame (51).

5. A safety interlock bolt according to claim 4 wherein: The lower surface of the connecting frame (51) is fixedly connected with a plurality of positioning sleeve pipes (53), and the plurality of positioning sleeve pipes (53) are arranged at equal intervals.

6. A safety interlock lock according to claim 5 wherein: The upper surface of the connecting frame (51) is fixedly connected with a handle (52), the connecting frame (51) is arranged in the shape of a Chinese character, each group of the positioning sleeve pipes (53) is inserted with a connecting blade (54), and the knife switch mounting seat (2) is provided with a slide (3) for slidably arranging the plurality of connecting blades (54).

7. A safety interlock lock according to claim 6 wherein: One end of each group of the slide (3) is provided with a conductive clamping piece (4) for clamping the connecting blade (54), and the slide (3) is provided with a connecting shaft (55) for rotatably arranging the plurality of connecting blades (54), and the connecting shaft (55) is fixedly connected to the inside of the knife switch mounting seat (2).

8. A safety deadlatch according to claim 7 wherein: One side of the knife switch base (1) is provided with an incoming power lead (8) electrically connected with the plurality of connecting blades (54), and the other side of the knife switch base (1) is provided with an outgoing power lead (9) electrically connected with the plurality of conductive clamping pieces (4).

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