Mechanical emergency starting device

Abstract

The present application relates to a kind of mechanical emergency starting device, including base, cover is set on base, emergency starting mechanism, the emergency starting mechanism includes rotary setting in base on carousel, transverse sliding setting in base and with carousel linkage cooperation slider, set between slider and base energy storage component, longitudinally sliding setting in base output pressure block, set between output pressure block and base spring, rotary setting in base and with slider linkage cooperation swing arm, the swing arm one end has with the drive arm of output pressure block cooperation, the drive arm with swing arm action and can be driven on output pressure block, and constitute the linkage cooperation of output pressure block and swing arm, the output pressure block with swing arm action and can drive two ac contactors to carry out the action of opening or closing.The present application has the advantages of simple structure, stable and reliable performance, long service life, low cost, can effectively realize the fast opening and closing of ac contactor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical appliances, in particular to a mechanical emergency starting device for AC contactors. BACKGROUND

[0002] An AC contactor is an electrical appliance in industrial electricity that uses the magnetic field generated by the current flowing through the coil to close the contact, so as to control the load. The AC contactor is widely used in the control circuit of the fire pump. Under normal conditions of the control circuit, after the AC contactor coil is powered on, the current flowing through the coil generates a magnetic field to attract the armature to the iron core, and drive the main contact of the AC contactor to close, and the main circuit is connected. When the AC contactor coil is powered off, the current flowing through the coil disappears, and the electromagnetic attraction of the armature also disappears, and the armature is released under the action of the release spring, so that the main contact of the AC contactor is separated, and the main circuit is disconnected. Since the power of the AC contactor is derived from the magnetic field generated by the current flowing through the coil with the iron core, in the case of controller failure or control circuit failure, the conventional AC contactor loses the power source for action, so that the main contact cannot act. At this time, if a fire occurs, the fire pump will not start, causing the failure of the fire protection system. Therefore, a mechanical emergency starting device for controlling the AC contactor appears on the market, which is mainly used for mechanical emergency starting of the fire pump in the case of failure of the fire pump cabinet controller or the control circuit of the AC contactor secondary circuit, or other occasions requiring mechanical emergency starting of the fire pump in emergency situations. However, the existing mechanical emergency starting device has a complex structure design, high production cost, and cannot achieve the purpose of fast opening and closing of the AC contactor, resulting in weak breaking capacity of the AC contactor. SUMMARY

[0003] The present application aims to overcome the defects of the prior art, and provide a mechanical emergency starting device with simple structure, stable and reliable performance, long service life, low cost, and effective realization of fast opening and closing of the AC contactor.

[0004] To achieve the above-mentioned purpose, the present application adopts a mechanical emergency starting device, which comprises a base, a cover body arranged on the base, an emergency starting mechanism, the emergency starting mechanism comprising a rotating disc rotatably arranged on the base, a sliding block horizontally slidingly arranged in the base and linked with the rotating disc, an energy storage assembly arranged between the sliding block and the base, an output pressing block longitudinally slidingly arranged in the base, a spring arranged between the output pressing block and the base, a rotating arm rotatably arranged in the base and linked with the sliding block, one end of the rotating arm having a driving arm matched with the output pressing block, the driving arm moving with the rotating arm and abutting against the output pressing block, and forming the linkage between the output pressing block and the rotating arm, and the output pressing block moving with the rotating arm and driving two AC contactors to perform opening or closing operation.

[0005] The beneficial effect of the above structure is that the mechanical emergency starting device adopts an energy storage structure design, and the energy storage assembly can accelerate the opening and closing operation speed of the emergency starting mechanism, so as to achieve the purpose of fast opening and closing of the two AC contactors, and the breaking capacity is higher. When operating, the dial is rotated, the dial drives the slider to slide, and when the slider moves, the slider compresses the energy storage assembly to realize energy storage of the energy storage assembly. When the slider slides past the dead point (midpoint), the energy storage assembly releases energy, thereby accelerating the sliding action, and the slider can drive the rotating arm and the output pressing block to move quickly, thereby realizing the fast opening or closing of the two AC contactors. Therefore, the mechanical emergency starting device has the advantages of simple structure, stable and reliable performance, long service life, low cost, and can effectively realize the fast opening and closing of the AC contactor.

[0006] In particular, the energy storage assembly includes two sets of spring energy storage groups respectively arranged between the slider and the base. The spring energy storage group includes a spring support longitudinally slidingly arranged in the base, an energy storage spring arranged between the spring support and the base, and a connecting rod. One end of the connecting rod is rotatably arranged on the spring support, and the other end of the connecting rod is rotatably arranged on one end of the slider, and constitutes a linkage with the slider. The spring support moves with the slider and can reciprocate longitudinally in the base. The energy storage assembly can accelerate the opening and closing operation speed of the emergency starting mechanism. When operating, the dial is rotated, the dial drives the slider to slide, and when the slider moves, the slider compresses the energy storage spring to realize energy storage of the energy storage spring. When the slider slides past the dead point (midpoint), the energy storage spring releases energy, thereby accelerating the sliding action, and the slider can drive the rotating arm and the output pressing block to move quickly, thereby realizing the fast opening or closing of the two AC contactors. The spring energy storage group has a simple structure and lower production cost.

[0007] In particular, the spring support has a cylindrical shape, the base is provided with a sliding groove matched with the spring support, the spring support is arranged in the sliding groove, and strip-shaped protrusions are respectively arranged on both sides of the spring support. The sliding groove is provided with a guide groove matched with the strip-shaped protrusions, and the strip-shaped protrusions reciprocate in the guide groove with the movement of the spring support. The strip-shaped protrusions of the spring support are engaged in the guide groove, thereby facilitating the assembly of the spring support and the housing, making the assembly more convenient, and ensuring that the spring support can reliably move in the housing, which is conducive to improving the working reliability of the mechanical emergency starting device.

[0008] In particular, the slider is provided with a push hole matched with the rotating arm, the other end of the rotating arm has a linkage arm matched with the slider, and the linkage arm extends into the push hole at one end, and constitutes a linkage with the slider. The rotating arm has the linkage arm inserted into the push hole, thereby ensuring more reliable transmission between the slider and the rotating arm.

[0009] Particularly, the positioning shafts are arranged on both sides of the middle part of the rotating arm respectively, the positioning grooves matched with the positioning shafts are arranged in the base, the positioning shafts are clamped in the positioning grooves, and the rotating connection of the rotating arm and the base is formed.

[0010] Particularly, the handle operation hole extending outside the cover is arranged on one side of the rotating disc, the push rod matched with the sliding block is arranged on the other side of the rotating disc, the limiting groove matched with the push rod is arranged on the sliding block, one end of the push rod extends into the limiting groove through the arc-shaped slot of the base, and the linkage of the sliding block and the push rod is formed.

[0011] Particularly, the guide blocks are arranged on both sides of the sliding block respectively, the sliding grooves matched with the guide blocks are arranged in the base, the guide blocks are clamped in the sliding grooves, the guide blocks slide back and forth in the sliding grooves along with the sliding block, and the reliable sliding of the sliding block in the base is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a perspective view of the emergency starting AC contactor of the embodiment of the present application.

[0013] Fig. 2 It is an exploded view of the embodiment of the present application.

[0014] Fig. 3 It is a sectional view of the embodiment of the present application.

[0015] Fig. 4 It is an internal structure view of the embodiment of the present application.

[0016] Fig. 5 It is a perspective view of the rotating arm of the embodiment of the present application. DETAILED DESCRIPTION

[0017] As Figs. 1-5As shown, the embodiment of the present application is a mechanical emergency starting device, comprising a base 10, a cover 11 arranged on the base 10, an emergency starting mechanism 20, the emergency starting mechanism 20 comprising a rotating disc 21 rotatably arranged on the base 10, a sliding block 22 transversely slidably arranged in the base 10 and linked with the rotating disc 21, an energy storage assembly 30 arranged between the sliding block 22 and the base 10, an output pressing block 23 longitudinally slidably arranged in the base 10, a spring 24 arranged between the output pressing block 23 and the base 10, a rotating arm 25 rotatably arranged in the base 10 and linked with the sliding block 22, one end of the rotating arm 25 having a driving arm 251 matched with the output pressing block 23, the driving arm 251 moving with the rotating arm 25 and abutting against the output pressing block 23, and constituting the linkage between the output pressing block 23 and the rotating arm 25, the output pressing block 23 moving with the rotating arm 25 and driving two AC contactors 12 to perform opening or closing actions. A driving shaft 26 is arranged between the output pressing block 23 and the movable contact holder of the two AC contactors, so as to realize the linkage between the output pressing block 23 and the movable contact holder. The energy storage assembly 30 comprises two sets of spring energy storage assemblies 31 arranged between the sliding block 22 and the base 10 respectively, each spring energy storage assembly 31 comprising a spring support 32 longitudinally slidably arranged in the base 10, an energy storage spring 33 arranged between the spring support 32 and the base 10, and a connecting rod 34, one end of the connecting rod 34 being rotatably arranged on the spring support 32, the other end of the connecting rod 34 being rotatably arranged on one end of the sliding block 22, and constituting the linkage between the connecting rod 34 and the sliding block 22, the spring support 32 moving with the sliding block 22 and longitudinally reciprocally sliding in the base 10. The energy storage assembly can accelerate the opening or closing operation speed of the emergency starting mechanism, in operation, the rotating disc is rotated, the rotating disc drives the sliding block to slide, the sliding block compresses the energy storage spring when moving, so as to realize the energy storage of the energy storage spring, when the sliding block slides through the dead point (midpoint), the energy storage spring releases energy, so as to accelerate the sliding action, the sliding block drives the rotating arm and the output pressing block to rapidly move, so as to realize the rapid opening or closing of the two AC contactors. The spring energy storage assembly has simple structure and low production cost. The spring support 32 has a cylindrical shape, the base 10 is provided with a sliding groove 101 matched with the spring support 32, the spring support 32 is arranged in the sliding groove 101, strip-shaped protrusions 321 are arranged on two sides of the spring support 32 respectively, the sliding groove 101 is provided with guide grooves 102 matched with the strip-shaped protrusions 321, and the strip-shaped protrusions 321 move with the spring support 32 and reciprocally slide in the guide grooves 102. The strip-shaped protrusions of the spring support are engaged in the guide grooves, so as to facilitate the assembly of the spring support and the shell, the assembly is more convenient, and the reliable movement of the spring support in the shell is ensured, which is beneficial to improve the working reliability of the mechanical emergency starting device.

[0018] AsFigs. 2-4 As shown, the slider 22 is provided with a push hole 221 matched with the rotating arm 25, the other end of the rotating arm 25 is provided with a linkage arm 252 matched with the slider 22, the linkage arm 252 extends in the push hole 221, and the linkage arm 252 and the slider 22 are matched. The rotating arm is provided with the linkage arm extending in the push hole, so that the transmission between the slider and the rotating arm is more reliable. The middle part of the rotating arm 25 is provided with a positioning shaft 253 on both sides, the base 10 is provided with a positioning groove 103 matched with the positioning shaft 253, the positioning shaft 253 is clamped in the positioning groove 103, and the rotating arm 25 and the base 10 are connected. The rotating arm is clamped in the base, so that the rotating arm and the base are assembled conveniently. One side of the rotating disc 21 is provided with a handle operation hole 211 extending out of the cover 11, the other side of the rotating disc 21 is provided with a push rod 212 matched with the slider 22, the slider 22 is provided with a limiting groove 222 matched with the push rod 212, one end of the push rod 212 extends in the limiting groove 222 through the arc-shaped groove 104 of the base 10, and the slider 22 and the push rod 212 are matched. The rotating disc drives the slider to move through the push rod, so that the transmission between the rotating disc and the slider is more reliable, the handle operation hole is arranged on the rotating disc, so that the user can operate conveniently. The slider 22 is provided with a guide block 223 on both sides, the base 10 is provided with a sliding groove 105 matched with the guide block 223, the guide block 223 is clamped in the sliding groove 105, and the guide block 223 slides in the sliding groove 105 with the slider 22. The guide block of the slider is clamped in the sliding groove of the base, so that the slider and the base are assembled conveniently, and the slider can slide reliably in the base, which is beneficial to improve the working reliability of the mechanical emergency starting device.

[0019] The mechanical emergency starting device adopts an energy storage structure, and the energy storage assembly can accelerate the opening and closing operation speed of the emergency starting mechanism, so that the two AC contactors can be quickly opened and closed, and the breaking capacity is higher. When operating, the rotating disc is rotated, the rotating disc drives the slider to slide, the slider compresses the energy storage assembly when moving, the energy storage assembly is energized, the energy storage assembly releases energy when the slider slides through the dead point (midpoint), so that the sliding action can be accelerated, the slider can drive the rotating arm and the output pressing block to move quickly, and the quick opening and closing of the two AC contactors is realized. Therefore, the mechanical emergency starting device has the advantages of simple structure, stable and reliable performance, long service life, low cost, and effective realization of the quick opening and closing of the AC contactor.

Claims

1. A mechanical emergency starting device, comprising a base, a cover arranged on the base, and an emergency starting mechanism, characterized in that: The emergency starting mechanism comprises a rotating disc arranged on the base, a sliding block arranged in the base and linked with the rotating disc, an energy storage assembly arranged between the sliding block and the base, an output pressing block arranged in the base and sliding longitudinally, a spring arranged between the output pressing block and the base, a rotating arm arranged in the base and linked with the sliding block, one end of the rotating arm is provided with a driving arm matched with the output pressing block, the driving arm moves with the rotating arm and can abut against the output pressing block, and the output pressing block and the rotating arm are linked, the output pressing block moves with the rotating arm and can drive two AC contactors to perform opening or closing operation, the energy storage assembly comprises two spring energy storage groups arranged between the sliding block and the base respectively, the spring energy storage group comprises a spring support arranged in the base and sliding longitudinally, an energy storage spring arranged between the spring support and the base, and a connecting rod, one end of the connecting rod is arranged on the spring support in a rotating mode, the other end of the connecting rod is arranged on one end of the sliding block in a rotating mode, and the connecting rod and the sliding block are linked, and the spring support moves with the sliding block and can slide longitudinally in the base.

2. The mechanical emergency starting device of claim 1, wherein: The spring support is in a cylindrical shape, the base is provided with a sliding groove matched with the spring support, the spring support is arranged in the sliding groove, strip-shaped protrusions are arranged on two sides of the spring support respectively, the sliding groove is provided with guide grooves matched with the strip-shaped protrusions, and the strip-shaped protrusions move with the spring support and can slide reciprocally in the guide grooves.

3. The mechanical emergency start device of claim 1, wherein: The sliding block is provided with a push hole matched with the rotating arm, the other end of the rotating arm is provided with a linkage arm matched with the sliding block, one end of the linkage arm extends in the push hole, and the linkage arm and the sliding block are linked.

4. The mechanical emergency start device of claim 1, wherein: Positioning shafts are arranged on two sides of the middle part of the rotating arm respectively, the base is provided with positioning grooves matched with the positioning shafts, the positioning shafts are clamped in the positioning grooves, and the rotating arm and the base are connected in a rotating mode.

5. The mechanical emergency start device of claim 1, wherein: One side of the rotating disc is provided with a handle operation hole extending out of the cover, the other side of the rotating disc is provided with a push rod matched with the sliding block, the sliding block is provided with a limiting groove matched with the push rod, one end of the push rod extends in the limiting groove through an arc-shaped groove of the base, and the sliding block and the push rod are linked.

6. The mechanical emergency starting device of claim 1, wherein: The sliding block is provided with guide blocks on two sides respectively, the base is provided with sliding grooves matched with the guide blocks, the guide blocks are clamped in the sliding grooves, and the guide blocks move with the sliding block and can slide reciprocally in the sliding grooves.

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