Emergency pump starting device for fire-fighting machinery

Abstract

The application discloses a contactor type fire-fighting mechanical emergency pump starting device, and belongs to the technical field of fire fighting. The device comprises a mounting plate, wherein an emergency starting device for controlling the fire-fighting water pump to extinguish fire is arranged on the mounting plate, first and second contactors are respectively arranged on the two sides of the emergency starting device, the emergency starting device comprises a device shell, an operation shaft for starting the emergency starting device is arranged on the device shell, a first gear is arranged at one end of the operation shaft, a transmission assembly is engaged with the first gear, an energy storage mechanism is arranged at the lower part of the transmission assembly, the first and second contactors are respectively arranged with first and second transmission arms and the transmission assembly, and the contactors are closed by a mechanical method to start the fire-fighting water pump. The device further solves the problems of the failure of the magnetic attraction method, the failure to start the fire-fighting water pump and the closing of the contactor, and has higher practicability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of fire fighting technology, and particularly relates to a contactor type fire fighting mechanical emergency pump starting device. BACKGROUND

[0002] A contactor is an electrical control device, which is a kind of electrical appliance that makes a predetermined step change in the electrical output circuit when the change of input (excitation) reaches the specified requirement, has the interaction between the control system (also known as the input circuit) and the controlled system (also known as the output circuit), and is usually applied to the automatic control circuit. It is a kind of "automatic switch" that uses small current to control large current operation, and thus plays the roles of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] According to the standards of "Fire Water Supply and Fire Hydrant System Technical Specification" GB50974-2014 and GB16086-2006, pressure starting, remote starting, and hard-wire starting are all realized by contactors to automatically start the fire pump. If the contactor and the weak electric signal fail to automatically start the fire pump, the "fire emergency starting device" set in the fire pump control cabinet should be used to directly start the fire pump.

[0004] When the control circuit in the fire pump control cabinet fails to automatically start the fire pump, immediate repair will be limited by the operation level of the maintenance personnel and the repair time, which requires the "fire emergency starting device" to ensure that the fire pump can be forcibly started under the condition of normal power supply, regardless of the circuit, to ensure the timeliness of fire fighting.

[0005] The existing contactor type emergency pump starting device still has the following defects in use.

[0006] Since the existing contactor type emergency pump starting device relies on the magnetic force generated by the energization of the electromagnetic coil to close the contactor contact when the contactor contact works normally, and uses the spring force to break the contact after the coil loses power, in some humid environments, the control circuit is prone to failure, causing the electromagnetic coil to fail to work normally, which makes it impossible to start and close the contactor in an emergency. Therefore, it is necessary to provide a contactor type fire fighting mechanical emergency pump starting device. SUMMARY

[0007] In view of the problem that the existing contactor type emergency pump starting device is prone to electromagnetic coil failure and cannot start and close the contactor by magnetic attraction during use, the application provides a contactor type fire-fighting mechanical emergency pump starting device, which drives the first gear by rotating the operation shaft, and the first gear synchronously drives the second gear and the transmission assembly to act, the transmission assembly drives the first contactor and the second contactor on both sides of the emergency starting device to act when acting, and drives the first transmission arm, the first movable contact and the second transmission arm, the second movable contact in the first contactor and the second contactor to act, thereby realizing mechanical starting and closing of the contactor, starting the fire-fighting water pump by closing the contactor in a mechanical mode, and further solving the problem of failure to start the fire-fighting water pump and close the contactor due to magnetic attraction, and the device has higher practicability.

[0008] To solve the above problems, the application adopts the following technical scheme.

[0009] A contactor type fire-fighting mechanical emergency pump starting device, comprising a mounting plate, wherein an emergency starting device for starting the fire-fighting water pump is arranged on the mounting plate, and a first contactor and a second contactor are arranged on both sides of the emergency starting device, respectively, the emergency starting device comprises a device housing, an operation shaft for starting the emergency starting device is arranged on the device housing, a first gear is arranged at one end of the operation shaft, a transmission assembly is engaged with the first gear, an energy storage mechanism is arranged at the lower part of the transmission assembly, and the first contactor and the second contactor are arranged with the transmission assembly through a first transmission arm and a second transmission arm, respectively.

[0010] Preferably, the transmission assembly comprises a transmission sleeve, a transmission rod, a second gear, a first eccentric sleeve and a second eccentric sleeve, wherein the second gear is fixed to the transmission sleeve through the transmission rod and is engaged with the first gear, and the second eccentric sleeve and the first eccentric sleeve are arranged at both ends of the transmission sleeve and the transmission rod, respectively.

[0011] Preferably, a clamping plate is arranged on the transmission sleeve, and a mounting piece for fixing the transmission assembly to the energy storage mechanism is clamped in the clamping plate, a mounting column for matching the energy storage mechanism is arranged at the lower end of the mounting piece, and the transmission sleeve and the transmission rod are limitingly assembled.

[0012] Preferably, a key groove for realizing the same torque is formed in the second gear and is connected with the transmission rod by a key, and the transmission rod, the transmission sleeve and the first eccentric sleeve and the second eccentric sleeve are limitingly clamped.

[0013] Preferably, the energy storage mechanism comprises a mounting cavity, a support arranged in the mounting cavity and an energy storage spring, wherein the mounting cavity is fixedly assembled on the mounting plate, the support is clamped in the mounting cavity, one end of the energy storage spring is sleeved on the support, and the other end of the energy storage spring abuts against the mounting cavity.

[0014] Preferably, the installation cavity side wall is provided with a stroke groove for displacing the bracket, the stroke groove is in "L" shape structure, and the bracket side wall is provided with a limiting column matched with the stroke groove.

[0015] Preferably, the energy storage spring is a double spring structure.

[0016] Preferably, the first contactor comprises a first transmission block, the first transmission block is provided with a first transmission arm and a first driven arm on both sides respectively, the first transmission arm is clamped in a first eccentric sleeve, one side between the first transmission arm and the first driven arm is provided with a first connecting rod, and the other side is provided with a first counter-force spring.

[0017] Preferably, one end of the first counter-force spring is provided with a first clamping piece, and the first clamping piece is clamped on a fixed plate in the device shell.

[0018] Preferably, a first moving contact is fixed on the first transmission block, and a first stationary contact which realizes on-off function by contacting with the first moving contact is fixed on the shell of the first contactor.

[0019] Preferably, the second contactor comprises a second transmission block, the second transmission block is provided with a second transmission arm and a second driven arm on both sides respectively, the second transmission arm is clamped in a second eccentric sleeve, one side between the second transmission arm and the second driven arm is provided with a second connecting rod, and the other side is provided with a second counter-force spring.

[0020] Preferably, one end of the second counter-force spring is provided with a second clamping piece, and the second clamping piece is clamped on a fixed plate in the device shell.

[0021] Preferably, a second moving contact is fixed on the second transmission block, and a second stationary contact which realizes on-off function by contacting with the second moving contact is fixed on the shell of the second contactor.

[0022] Beneficial effects

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] In the application, the first gear is driven to rotate by rotating the operation shaft clockwise, the second gear and the transmission assembly are synchronously driven to move and the energy storage mechanism is driven to enter the energy storage stage when the first gear rotates to 54°, at this time, the energy storage spring is deformed under the action of the support and the transmission assembly, when the operation shaft is rotated clockwise again, the energy storage mechanism breaks the energy storage state, the support is lifted in the recovery process of the energy storage spring, so that the first gear continues to rotate clockwise by 36°, at this time, the first eccentric sleeve and the second eccentric sleeve rotate clockwise by 90° and press down the first transmission arm and the second transmission arm, drive the first moving contact and the second moving contact in the first contactor and the second contactor to move, realize the mechanical starting and closing of the contactor, and the contactor is closed by the mechanical method to start the fire pump, further solve the problems that the fire pump and the contactor cannot be started due to the failure of the magnetic attraction mode, and the practicality is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic view of a contactor type fire-fighting mechanical emergency pump starting device.

[0026] Figure 2 It is a whole structure schematic view of an emergency starting device inside a contactor type fire-fighting mechanical emergency pump starting device Figure 1 .

[0027] Figure 3 It is a whole structure schematic view of an emergency starting device inside a contactor type fire-fighting mechanical emergency pump starting device Figure 2 .

[0028] Figure 4 It is a structure schematic view of an operation shaft and a transmission assembly of a contactor type fire-fighting mechanical emergency pump starting device.

[0029] Figure 5 It is a structure schematic view of a transmission assembly of a contactor type fire-fighting mechanical emergency pump starting device.

[0030] Figure 6 It is an exploded view of a transmission assembly of a contactor type fire-fighting mechanical emergency pump starting device.

[0031] Figure 7 It is a structure schematic view of a first contactor of a contactor type fire-fighting mechanical emergency pump starting device.

[0032] Figure 8 It is a structure schematic view of a first contactor inside a contactor type fire-fighting mechanical emergency pump starting device Figure 1 .

[0033] Figure 9 It is a structure schematic view of a first contactor inside a contactor type fire-fighting mechanical emergency pump starting device Figure 2 .

[0034] Figure 10 It is a second contactor internal structure diagram of a contactor type fire-fighting machinery emergency pump starting device.

[0035] Figure 11 It is a whole internal structure diagram of a contactor type fire-fighting machinery emergency pump starting device Figure 1 .

[0036] Figure 12 It is a whole internal structure diagram of a contactor type fire-fighting machinery emergency pump starting device Figure 2 .

[0037] Figure 13 It is a mounting cavity structure diagram of a contactor type fire-fighting machinery emergency pump starting device.

[0038] The correspondence between the various figure annotations and component names in the drawings is as follows:

[0039] 100, emergency starting device; 200, first contactor; 300, second contactor; 400, mounting plate;

[0040] 10, device housing; 11, operation shaft; 111, first gear; 12, transmission assembly; 121, first eccentric sleeve; 122, transmission rod; 123, second gear; 124, mounting piece; 125, transmission sleeve; 126, second eccentric sleeve; 13, support; 14, energy storage spring; 15, mounting cavity; 16, fixed plate;

[0041] 20, first transmission arm; 21, first transmission block; 22, first moving contact; 23, first stationary contact; 24, first driven arm; 25, first counter-force spring; 26, first connecting rod; 27, first clamping piece;

[0042] 30, second transmission arm; 31, second transmission block; 32, second moving contact; 33, second stationary contact; 34, second driven arm; 35, second counter-force spring; 36, second connecting rod; 37, second clamping piece. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] As Figures 1-13As shown, it is a structure schematic view of an emergency pump starting device of a contactor type fire-fighting mechanical machine, which is a preferred embodiment of the present application, and the embodiment includes a mounting plate 400, which is provided with an emergency starting device 100 for controlling the fire-fighting water pump to extinguish fire, and the emergency starting device 100 is respectively provided with a first contactor 200 and a second contactor 300 on both sides, the emergency starting device 100 includes a device housing 10, which is provided with an operation shaft 11 for starting the emergency starting device 100, one end of the operation shaft 11 is provided with a first gear 111, the first gear 111 is engaged with a transmission assembly 12, the lower part of the transmission assembly 12 is provided with an energy storage mechanism, the first contactor 200 and the second contactor 300 are respectively provided with a first transmission arm 20 and a second transmission arm 30 and the transmission assembly 12, the first gear 111 cooperates with the transmission assembly 12, when the first gear 111 rotates, the transmission assembly 12 rotates synchronously, so that the energy storage mechanism matched with the transmission assembly 12 stores energy, when the energy storage state is destroyed, the energy storage mechanism reacts on the transmission assembly 12 and drives the first transmission arm 20 and the second transmission arm 30, so that the first contactor 200 and the second contactor 300 are started and closed, which further embodies the practicability of mechanical starting and closing, solves the problem that the contactor cannot be started and closed due to magnetic attraction, and has higher practicability.

[0045] As Figure 6 shown in the embodiment, the transmission assembly 12 includes a transmission sleeve 125, a transmission rod 122, a second gear 123, a first eccentric sleeve 121 and a second eccentric sleeve 126, wherein the second gear 123 is fixedly sleeved on the transmission sleeve 125 through the transmission rod 122 and is engaged with the first gear 111, the transmission sleeve 125 and the transmission rod 122 are respectively provided with the second eccentric sleeve 126 and the first eccentric sleeve 121 at both ends, the second gear 123 is sleeved in the transmission sleeve 125 and is limited on the transmission sleeve 125 through the transmission rod 122, the transmission sleeve 125 and the transmission rod 122 are provided with trapezoidal blocks on the outside, and the trapezoidal blocks are symmetrically arranged on the outside, the inside of the first eccentric sleeve 121 and the second eccentric sleeve 126 is provided with two arc-shaped blocks, and the trapezoidal blocks are clamped to the segmented arc-shaped blocks, so as to realize the assembly of the first eccentric sleeve 121 and the transmission rod 122, and the second eccentric sleeve 126 and the transmission sleeve 125.

[0046] As Figure 6In the embodiment shown, the transmission sleeve 125 is provided with a clamping plate, and a mounting member 124 for fixing the transmission assembly 12 to the energy storage mechanism is clamped in the clamping plate. The lower end of the mounting member 124 is provided with a mounting column matched with the energy storage mechanism. The transmission sleeve 125 is limitingly assembled with the transmission rod 122. The clamping plate is outwardly extended from one side of the transmission sleeve 125. The clamping plate is provided with a hole position. The upper column of the mounting member 124 is arranged in the hole position to realize assembly. The lower part of the energy storage mechanism is provided with a circular hole matched with the mounting column. The transmission sleeve 125 is provided with the same matched shape as the transmission rod 122 to realize limit assembly.

[0047] As shown in the embodiment shown, Figure 6 In the embodiment shown, the second gear 123 is provided with a key groove matched with the transmission rod 122 to realize the same torque. The transmission rod 122, the transmission sleeve 125, the first eccentric sleeve 121 and the second eccentric sleeve 126 are limitingly clamped. The inner side of the transmission rod 122 is provided with the same structure as the key groove on the second gear 123 to realize limit assembly of the second gear 123 and the transmission rod 122, so that the same torque is realized when they rotate.

[0048] As shown in the embodiment shown, Figures 2-5 In the embodiment shown, the energy storage mechanism includes a mounting cavity 15, a bracket 13 arranged in the mounting cavity 15 and an energy storage spring 14. The mounting cavity 15 is fixedly clamped to the device housing 10, and the device housing 10 is fixed to the mounting plate 400 by screws. The bracket 13 is clamped in the mounting cavity 15. One end of the energy storage spring 14 is sleeved on the bracket 13, and the other end abuts against the mounting cavity 15. The mounting cavity 15 is fixed to the mounting plate 400 by screws. Stroke grooves are formed in the two side plates of the mounting cavity 15. Limiting columns matched with the stroke grooves are arranged on the two sides of the bracket 13 to realize assembly of the bracket 13 and the mounting cavity 15. The bracket 13 is provided with a protruding structure, and the energy storage spring 14 is sleeved on the protruding structure.

[0049] As shown in the embodiment shown, Figure 13 In the embodiment shown, the side wall of the mounting cavity 15 is provided with a stroke groove for displacement of the bracket 13. The stroke groove has an "L" shape. The side wall of the bracket 13 is provided with a limiting column matched with the stroke groove. The short side of the "L" shaped stroke groove faces the side wall of the mounting cavity 15, and the long side extends upward relative to the side wall of the bracket 13. The design of the stroke groove makes the energy storage mechanism have a longer energy storage time and a stronger counter thrust.

[0050] In this embodiment, the energy storage spring 14 is a double-spring structure. The design of the double-spring structure allows the energy storage mechanism to generate greater thrust after energy storage is completed, thereby driving the first gear 111 and the second gear 123 to continue to rotate clockwise. At the same time, the design of the double-spring structure requires more force when operating the contact-type fire-fighting mechanical emergency pump starter, which avoids the contactor being started and closed due to accidental contact, thus affecting its use and further demonstrating the advantages of safe use.

[0051] like Figures 7-9 In the embodiment shown, the first contactor 200 includes a first transmission block 21. The first transmission block 21 has a first transmission arm 20 and a first driven arm 24 on both sides. The first transmission arm 20 is fitted into a first eccentric sleeve 121. A first connecting rod 26 is provided on one side between the first transmission arm 20 and the first driven arm 24, and a first reaction spring 25 is provided on the other side. The first transmission block 21, the first transmission arm 20, and the first driven arm 24 are fixed together by a pin. The first reaction spring 25 has an extension end, which is respectively fitted into the first transmission arm 20 and the first driven arm 24. A pressure block is provided on the first eccentric sleeve 121, which abuts against the bent part of the first transmission arm 20.

[0052] like Figures 7-8 In this embodiment, the first reaction spring 25 extends to one end and is provided with a first locking member 27. The first locking member 27 is locked to the fixing plate 16 inside the device housing 10. The first reaction spring 25 is integrally formed with the first locking member 27. The first locking member 27 extends toward the emergency start device 100 and is locked in the slot on the fixing plate 16.

[0053] like Figures 7-9 In the embodiment shown, a first moving contact 22 is fixed on the first transmission block 21, and a first stationary contact 23 is fixed on the housing of the first contactor 200 to contact the first moving contact 22 to realize the switching function. The first stationary contact 23 is fixed in the housing of the first contactor 200, and the first moving contact 22 is inserted into the first transmission block 21 to realize synchronous operation.

[0054] like Figure 10In the embodiment shown, the second contactor 300 comprises a second transmission block 31, two sides of which are respectively provided with a second transmission arm 30 and a second driven arm 34, wherein the second transmission arm 30 is clamped to the second eccentric sleeve 126, one side between the second transmission arm 30 and the second driven arm 34 is provided with a second connecting rod 36, and the other side is provided with a second counter-force spring 35, the second transmission block 31, the second transmission arm 30 and the second driven arm 34 are fixed through a pin shaft, the second counter-force spring 35 is provided with an extension end, which is clamped into the second transmission arm 30 and the second driven arm 34 respectively, and the second eccentric sleeve 126 is provided with a pressing block, which abuts against the curved portion of the second transmission arm 30.

[0055] As shown in the embodiment shown, Figure 10 In the embodiment shown, one end of the second counter-force spring 35 extends to be provided with a second clamping piece 37, which is clamped to the fixed plate 16 in the device housing 10, and the second counter-force spring 35 is integrally formed with the second clamping piece 37, which extends towards the emergency starting device 100 and is clamped into the empty slot on the fixed plate 16.

[0056] As shown in the embodiment shown, Figure 10 In the embodiment shown, the second transmission block 31 is fixed with a second moving contact 32, the housing of the second contactor 300 is fixed with a second stationary contact 33 which contacts the second moving contact 32 to realize the on-off function, the second stationary contact 33 is clamped into the housing of the second contactor 300 to realize fixation, and the second moving contact 32 is inserted into the second transmission block 31 to realize synchronous action.

[0057] Working principle:

[0058] First stage (energy storage state): as shown, Figure 10 The structure is the initial state of the contactor type fire-fighting mechanical emergency pump starting device, at this time the first eccentric sleeve 121 and the first transmission arm 20, the second eccentric sleeve 126 and the second transmission arm 30 are in abutting structure, the first moving contact 22 and the first stationary contact 23, the second moving contact 32 and the second stationary contact 33 are in separated state. At this time, the operating shaft 11 and the first gear 111 are rotated clockwise by 54°, the first gear 111 drives the second gear 123 engaged therewith to rotate by 90°, the transmission sleeve 125 and the transmission rod 122 are simultaneously rotated by 90° with the second gear 123 and drive the mounting piece 124 connected with the transmission sleeve 125 to make downward movement, the mounting piece 124 feeds back the rotating force to the bracket 13 and realizes downward pressure on the energy storage spring 14 through the bracket 13, at this time the energy storage spring 14 enters the energy storage state and reaches the deformation limit, in this state the first eccentric sleeve 121 and the second eccentric sleeve 126 are not rotated;

[0059] Second stage (energy release state): when the energy storage spring 14 reaches the deformation limit, a certain force is applied to the operating shaft 11, at which time the energy storage spring 14 breaks the energy storage balance, generates an upward thrust when the energy storage spring 14 overcomes the deformation force, and drives the bracket 13 and the mounting piece 124 upward, the mounting piece 124 drives the second gear 123, the transmission rod 122 and the transmission sleeve 125 to continue to rotate clockwise by 60°, the second gear 123 reaches the stop position, the transmission rod 122 and the transmission sleeve 125 continue to rotate clockwise by 30°, and the first gear 111 rotates clockwise by 36° at the same time, in the energy release state, the first eccentric sleeve 121 and the second eccentric sleeve 126 rotate clockwise by 90° with the transmission rod 122 and the transmission sleeve 125, and the pressure block on the first eccentric sleeve 121 and the second eccentric sleeve 126 presses the first transmission arm 20 and the second transmission arm 30 downward by 90°, at which time the first transmission arm 20 and the second transmission arm 30 drive the first driven arm 24 and the second driven arm 34 to press downward, so that the first transmission block 21 and the second transmission block 31 press downward synchronously, so that the first moving contact 22 and the second moving contact 32 are in contact with the first stationary contact 23 and the second stationary contact 33, and the closing is realized.

[0060] The above is a further detailed description of the present application in combination with the specific embodiments, and cannot be considered as limiting the specific embodiments of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or replacements can be made, which should be considered as belonging to the protection scope determined by the claims submitted by the present application.

Claims

1. A contactor-type emergency pump starter for fire-fighting machinery, comprising a mounting plate (400), wherein the mounting plate (400) is provided with an emergency starter (100) for controlling the fire pump to extinguish fires, and a first contactor (200) and a second contactor (300) are respectively mounted on both sides of the emergency starter (100). Its features are: The emergency start device (100) includes a device housing (10), on which an operating shaft (11) for starting the emergency start device (100) is provided. One end of the operating shaft (11) is provided with a first gear (111), on which a transmission assembly (12) meshes. An energy storage mechanism is mounted on the lower part of the transmission assembly (12). The first contactor (200) and the second contactor (300) are respectively mounted with the transmission assembly (12) through a first transmission arm (20) and a second transmission arm (30). The transmission assembly (12) includes a transmission sleeve (125), a transmission rod (122), a second gear (123), a first eccentric sleeve (121), and a second eccentric sleeve (126). The second gear (123) is connected to the transmission assembly (100) through the transmission rod (125). 2) The transmission sleeve (125) is fixed and meshes with the first gear (111). The transmission sleeve (125) and the transmission rod (122) are respectively equipped with a second eccentric sleeve (126) and a first eccentric sleeve (121) at both ends. The transmission sleeve (125) is provided with a clamping plate. The clamping plate is fitted with an installation part (124) for fixing the transmission assembly (12) to the energy storage mechanism. The lower end of the installation part (124) is provided with an installation post that matches the energy storage mechanism. The transmission sleeve (125) and the transmission rod (122) are fitted together with a limiting assembly. The second gear (123) has a keyway that connects with the transmission rod (122) to achieve the same torque. The transmission rod (122), the transmission sleeve (125), the first eccentric sleeve (121), and the second eccentric sleeve (126) are fitted together with a limiting engagement.

2. The contactor-type emergency pump starter for fire-fighting machinery according to claim 1, characterized in that: The energy storage mechanism includes a mounting cavity (15), a bracket (13) disposed in the mounting cavity (15), and an energy storage spring (14). The mounting cavity (15) is fixedly mounted on the mounting plate (400), and the bracket (13) is clamped in the mounting cavity (15). One end of the energy storage spring (14) is sleeved on the bracket (13), and the other end abuts against the mounting cavity (15).

3. The contactor-type emergency pump starter for fire-fighting machinery according to claim 2, characterized in that: The mounting cavity (15) has a travel groove on its side wall to allow the bracket (13) to move. The travel groove is in the shape of an "L". The bracket (13) has a limiting post on its side wall that is fitted with the travel groove.

4. The contactor-type emergency pump starter for fire-fighting machinery according to claim 2, characterized in that: The energy storage spring (14) has a double spring structure.

5. The contactor-type emergency pump starter for fire-fighting machinery according to claim 1, characterized in that: The first contactor (200) includes a first transmission block (21), on which a first transmission arm (20) and a first driven arm (24) are respectively provided on both sides. The first transmission arm (20) is fitted into a first eccentric sleeve (121). A first connecting rod (26) is provided on one side between the first transmission arm (20) and the first driven arm (24), and a first reaction spring (25) is provided on the other side.

6. The contactor-type emergency pump starter for fire-fighting machinery according to claim 5, characterized in that: One end of the first reaction spring (25) extends to provide a first locking member (27), which is locked to the fixing plate (16) inside the device housing (10).

7. The contactor-type emergency pump starter for fire-fighting machinery according to claim 5, characterized in that: A first moving contact (22) is fixed on the first transmission block (21), and a first stationary contact (23) is fixed on the housing of the first contactor (200) to contact the first moving contact (22) to realize the switching function.

8. The contactor-type emergency pump starter for fire-fighting machinery according to claim 1, characterized in that: The second contactor (300) includes a second transmission block (31), on which a second transmission arm (30) and a second driven arm (34) are respectively provided on both sides. The second transmission arm (30) is fitted into a second eccentric sleeve (126). A second connecting rod (36) is provided on one side between the second transmission arm (30) and the second driven arm (34), and a second reaction spring (35) is provided on the other side.

9. The contactor-type emergency pump starter for fire-fighting machinery according to claim 8, characterized in that: The second reaction spring (35) has a second locking member extending from one end, which is locked to the fixing plate (16) inside the device housing (10).

10. The contactor-type emergency pump starter for fire-fighting machinery according to claim 8, characterized in that: A second moving contact (32) is fixed on the second transmission block (31), and a second stationary contact (33) is fixed on the housing of the second contactor (300) to contact the second moving contact (32) to realize the switching function.

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