Pneumatic extinguisher starting mechanism

Abstract

The utility model provides a pneumatic extinguisher starting mechanism which comprises a motor, a first gear and a second gear, the second gear is fixed on a flywheel of an engine, the motor is fixed on the outer wall of the engine, a spiral groove is arranged on a power shaft of the motor, the inner wall of the first gear is in threaded connection with the spiral groove, and the second gear is fixed on the outer wall of the engine. The power shaft is fixedly connected with an anti-disengaging piece, and an elastic piece is arranged between the anti-disengaging piece and the first gear. After the power shaft rotates, the first gear moves along the spiral groove in the direction close to the anti-disengaging piece and then is meshed with the second gear, and the technical effects of high transmission stability and light structural weight are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a starting mechanism, in particular to a wind force fire extinguishing machine starting mechanism. BACKGROUND

[0002] At present, the Chinese patent with the authorization announcement number CN220404687U discloses a backpack type wind force fire extinguishing machine, and belongs to the technical field of fire fighting equipment, which comprises a fixing frame, a backpack is arranged at the right end of the fixing frame, an oil tank is arranged at the bottom of the fixing frame, an engine is arranged at the top of the oil tank, a hand-held frame is arranged at the top of the engine, a fan is arranged at the right side of the engine, a limiting block slot is formed at the top of the fixing frame, a limiting block is arranged on the side of the fan, the limiting block is movably connected with the limiting block slot, a blowpipe is connected to the fan, a connecting hose is arranged in the middle of the blowpipe, a fixing structure is arranged on the blowpipe, the fixing structure comprises a buckle end arranged on one side of the connecting hose and a buckling end arranged on the other side of the connecting hose, a rotating buckle rod is arranged on the buckle end, and the buckle rod is buckled with the buckling end.

[0003] In order to start the engine, a starting motor is usually needed.

[0004] At present, the Chinese patent with the application publication number CN117662346A discloses a starting motor for starting an engine, which comprises a motor and a driving assembly, the driving assembly comprises a transmission gear, an outer gear ring and an inner ratchet wheel, the outer gear ring is connected with the motor through the transmission gear, the inner gear ring drives the engine to start, the center shaft between the outer gear ring and the inner ratchet wheel is collinear, a centrifugal disc is arranged in the inner ratchet wheel, the center shaft of the centrifugal disc is collinear with the center shaft of the outer gear ring, and the centrifugal disc is provided with a clamping piece capable of being ejected and reset.

[0005] In the use state, the initial rotating force of the outer gear ring drives the centrifugal disc to preliminarily rotate, so that the clamping piece on the centrifugal disc is ejected into the inner ratchet wheel and drives the inner ratchet wheel to rotate and start, in the disconnected state, the outer gear ring stops rotating, so that the centrifugal disc stops rotating, the clamping piece on the centrifugal disc is reset and separated from the inner ratchet wheel, the inner ratchet wheel and the centrifugal disc are disconnected, the engine flywheel rotates synchronously under the driving of the inner ratchet wheel, and the engine is started.

[0006] Since there are too many gears in the starting motor, the running stability is poor. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model aims at providing a wind force fire extinguishing machine starting mechanism, which can complete the engine starting only by two gears, so that the high stability and low weight effect are achieved.

[0008] In order to solve the above technical problems, the technical scheme of the utility model is: a wind force fire extinguishing machine starting mechanism, including motor, first gear, second gear, the second gear is fixed on the flywheel of engine, the motor is fixed on the outer wall of engine, the power shaft of motor is equipped with spiral groove, the inner wall of first gear is connected on spiral groove, the power shaft is fixedly connected with anti -drop piece, the anti -drop piece is provided with elastic piece between first gear,

[0009] The power shaft rotates and makes the first gear move along the spiral groove and in the direction close to the anti-drop piece and engages with the second gear.

[0010] The above technical scheme is realized, when the motor starts, the power shaft rotates, through the conduction of spiral groove and the action of centrifugal force, the first gear can move along the spiral groove and in the direction close to the anti-drop piece, the first gear engages with the second gear, the second gear drives the flywheel to rotate, thereby completing the engine starting, after the engine starts, the motor is closed, the power shaft stops rotating, through the elastic force of elastic piece, the first gear moves along the spiral groove and in the direction away from the anti-drop piece and separates from the second gear, the number of gears is less, and the whole is light in weight, reliable and stable in operation.

[0011] As a preferred scheme of the utility model, the first gear includes support ring, protection ring, a plurality of first tooth parts, the support ring is fixed on the side of protection ring towards anti-drop piece, the side of motor towards anti-drop piece is fixedly connected with protrusion, the protection ring is used for resisting the protrusion, the support ring and protection ring are all screw-connected on spiral groove, a plurality of first tooth parts are fixed on the outer wall of support ring and are evenly distributed along the axis of support ring, the side wall of first tooth part is fixedly connected with protection ring.

[0012] The above technical scheme is realized, after the power shaft stops rotating, the protection ring is resisted by protrusion through the elastic force of elastic piece, to improve the protection effect on first tooth part.

[0013] As a preferred scheme of the utility model, the side of first tooth part away from protection ring is equipped with protection bevel.

[0014] The above technical scheme is realized, in the process that the first gear moves along the spiral groove and in the direction close to the second gear, because of the setting of protection bevel, the cross section of one end of first tooth part towards second gear is small, so it can smoothly enter the gap of second gear, to quickly realize the engagement of first gear and second gear, and improve the protection effect on first tooth part and second gear.

[0015] As a preferred scheme of the utility model, the second gear includes a fixed ring, second tooth parts, a positioning ring, a connecting plate, a limiting ring, a plurality of the second tooth parts are fixed on the outer wall of the fixed ring and are evenly distributed along the axis of the fixed ring, the limiting ring is fixed on the flywheel and is coaxially arranged with the flywheel, the positioning ring is sleeved on the outer wall of the limiting ring, one end of the connecting plate is fixedly connected with the positioning ring, the other end of the connecting plate is fixedly connected with the fixed ring, and the connecting plate is fixedly connected with the flywheel.

[0016] The above technical scheme is realized, the overall quality of the second gear is lighter, and the rotation of the first gear to drive the second gear is smoother.

[0017] As a preferred scheme of the utility model, a plurality of reinforcing ribs are fixedly connected to the inner wall of the limiting ring, the plurality of reinforcing ribs are evenly distributed along the axis of the limiting ring, and the end of the reinforcing rib is fixedly connected with the flywheel.

[0018] The above technical scheme is realized, and the structural strength between the flywheel and the limiting ring is improved.

[0019] As a preferred scheme of the utility model, the flywheel is fixedly connected with a convex column, the connecting plate is provided with a fixing hole, a fixing bolt is arranged in the fixing hole, and the fixing bolt is screw-connected with the convex column.

[0020] The above technical scheme is realized, the second gear can have a certain distance from the flywheel through the spacing effect of the convex column, and the heat dissipation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an external structure schematic view of the utility model;

[0022] Figure 2 It is Figure 1 An enlarged view of A;

[0023] Figure 3 It is a structure schematic view of the convex column;

[0024] Figure 4 It is a structure schematic view of the second gear;

[0025] Figure 5 It is a structure schematic view of the power shaft.

[0026] 1, motor; 2, power shaft; 3, spiral groove; 4, first gear; 5, support ring; 6, protection ring; 7, first tooth part; 8, elastic piece; 9, anti-off piece; 10, protrusion; 11, protection slope; 12, second gear; 13, fixed ring; 14, second tooth part; 15, positioning ring; 16, connecting plate; 17, limiting ring; 18, protruding column; 19, fixed bolt; 20, reinforcing rib; 21, flywheel. DETAILED DESCRIPTION

[0027] The specific embodiments of the utility model are further described in detail below in combination with the drawings, so that the technical scheme of the utility model is easier to understand and master.

[0028] A wind force fire extinguishing machine starting mechanism, including motor 1, first gear 4, second gear 12, motor 1 is fixed on the outer wall of engine, and second gear 12 is fixed on the flywheel 21 of engine. Spiral groove 3 is opened on the power shaft 2 of motor 1. The inner wall of first gear 4 is threadedly connected on spiral groove 3, and the end of power shaft 2 is fixedly connected with anti-off piece 9, and elastic piece 8 is arranged between anti-off piece 9 and first gear 4. Elastic piece 8 is spring.

[0029] Wherein, first gear 4 includes support ring 5, protection ring 6, a plurality of first tooth parts 7. Support ring 5 is fixed to the side of protection ring 6 towards anti-off piece 9, and support ring 5 and protection ring 6 are coaxially arranged, and the outer diameter of protection ring 6 is greater than the outer diameter of support ring 5. Protrusion 10 is fixedly connected to the side of motor 1 towards anti-off piece 9, and protection ring 6 is used to abut against protrusion 10. Support ring 5 and protection ring 6 are all threadedly connected on spiral groove 3.

[0030] A plurality of first tooth parts 7 are fixed to the outer wall of support ring 5 and are evenly distributed along the axis of support ring 5, and the side wall of first tooth part 7 is fixedly connected with protection ring 6.

[0031] Accordingly, when motor 1 starts, power shaft 2 rotates, and through the conduction effect of centrifugal force and spiral groove 3, first gear 4 moves towards anti-off piece 9 and compresses elastic piece 8, so that first gear 4 is engaged with second gear 12, and when power shaft 2 continuously rotates, second gear 12 can drive flywheel 21 to rotate to start engine. Then motor 1 stops, and first gear 4 is separated from second gear 12 through the elastic force of elastic piece 8, and first gear 4 is reset.

[0032] The side of first tooth part 7 away from protection ring 6 is provided with protection slope 11.

[0033] The second gear 12 comprises a fixed ring 13, second tooth parts 14, a positioning ring 15, connecting plates 16, and a limiting ring 17. The second tooth parts 14 are fixed on the outer wall of the fixed ring 13 and are evenly distributed along the axis of the fixed ring 13. The first tooth parts 7 are used to engage with the second tooth parts 14.

[0034] The limiting ring 17 is fixed on the flywheel 21 and is coaxially arranged with the flywheel 21. The positioning ring 15 is sleeved on the outer wall of the limiting ring 17, and the limiting ring 17 is coaxially arranged with the positioning ring 15. One end of the connecting plate 16 is fixedly connected with the positioning ring 15, the other end of the connecting plate 16 is fixedly connected with the fixed ring 13, the connecting plate 16 is fixedly connected with the flywheel 21, and the four connecting plates 16 are evenly distributed along the axis of the fixed ring 13. The fixed ring 13 is coaxially arranged with the limiting ring 17.

[0035] The flywheel 21 is fixedly connected with protruding columns 18, and the two protruding columns 18 are evenly distributed along the axis of the flywheel 21. The connecting plate 16 is provided with a fixing hole, and a fixing bolt 19 is arranged in the fixing hole and is threadedly connected with the protruding column 18.

[0036] The limiting ring 17 is fixedly connected with a plurality of reinforcing ribs 20 on the inner wall of the limiting ring 17, and the reinforcing ribs 20 are evenly distributed along the axis of the limiting ring 17. The end of the reinforcing rib 20 is fixedly connected with the flywheel 21.

[0037] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and the technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of the present application.

Claims

1. A starting mechanism for a wind fire extinguishing machine, comprising a motor (1), a first gear wheel (4), a second gear wheel (12) fixed to a flywheel (21) of the motor, and the motor (1) fixed to the outer wall of the motor, characterized in that: The power shaft (2) of the motor (1) is provided with a spiral groove (3), the inner wall of the first gear (4) is threadedly connected to the spiral groove (3), the power shaft (2) is fixedly connected with an anti-disengagement piece (9), and the anti-disengagement piece (9) and the first gear (4) are provided with an elastic piece (8). ​ The power shaft (2) rotates to drive the first gear (4) to move along the spiral groove (3) and towards the anti-disengagement piece (9) to engage with the second gear (12).

2. A starting mechanism for a pneumatic fire extinguishing machine according to claim 1, characterized in that: The first gear (4) comprises a supporting ring (5), a protective ring (6) and a plurality of first tooth portions (7), the supporting ring (5) is fixed to one side of the protective ring (6) facing the anti-disengagement piece (9), the motor (1) is fixedly connected with a protrusion (10) on one side facing the anti-disengagement piece (9), the protective ring (6) is used to abut against the protrusion (10), the supporting ring (5) and the protective ring (6) are threadedly connected to the spiral groove (3), the plurality of first tooth portions (7) are fixed to the outer wall of the supporting ring (5) and are evenly distributed along the axis of the supporting ring (5), and the side wall of the first tooth portion (7) is fixedly connected with the protective ring (6).

3. A starting mechanism for a pneumatic fire extinguishing machine according to claim 2, characterized in that: The side, away from the protective ring (6), of the first tooth portion (7) is provided with a protective inclined surface (11).

4. A starting mechanism for a pneumatic fire extinguishing machine as defined in claim 1, wherein: The second gear (12) comprises a fixed ring (13), a second tooth portion (14), a positioning ring (15), a connecting plate (16) and a limiting ring (17), the plurality of second tooth portions (14) are fixed to the outer wall of the fixed ring (13) and are evenly distributed along the axis of the fixed ring (13), the limiting ring (17) is fixed to the flywheel (21) and is coaxially arranged with the flywheel (21), the positioning ring (15) is sleeved on the outer wall of the limiting ring (17), one end of the connecting plate (16) is fixedly connected with the positioning ring (15), the other end of the connecting plate (16) is fixedly connected with the fixed ring (13), and the connecting plate (16) is fixedly connected with the flywheel (21).

5. A starting mechanism for a pneumatic fire extinguishing machine according to claim 4, characterized in that: The inner wall of the limiting ring (17) is fixedly connected with a plurality of reinforcing ribs (20), the plurality of reinforcing ribs (20) are evenly distributed along the axis of the limiting ring (17), and the end of the reinforcing rib (20) is fixedly connected with the flywheel (21).

6. A starting mechanism for a pneumatic fire extinguishing machine as defined in claim 4, wherein: The flywheel (21) is fixedly connected with a protruding column (18), the connecting plate (16) is provided with a fixing hole, the fixing hole is provided with a fixing bolt (19), and the fixing bolt (19) is threadedly connected with the protruding column (18).

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