CN216480182U - Explosion-proof mechanism of freezing trimmer - Google Patents

Abstract

The application relates to an explosion-proof mechanism of a freezing trimmer, and relates to the field of trimmers. It includes that one end is used for the blast pipe that is linked together with the interior storehouse of organism and is used for providing inert gas's inert gas generation unit for the organism, is provided with in the blast pipe to be used for reducing the organism and leads to the explosion-proof subassembly of the inside damage of organism when producing the explosion, and the storehouse is provided with oxygen concentration sensor in the organism, and when oxygen concentration sensor detected in the organism and reached first default, inert gas generation unit started and to carrying inert gas to the organism, is provided with the pipe on the organism. The application has the effect of reducing damage caused by dust explosion to the frozen edge trimmer.

Description

Explosion-proof mechanism of freezing trimmer

Technical Field

The application relates to the field of edge trimmers, in particular to an explosion-proof mechanism of a freezing edge trimmer.

Background

The freezing trimmer is to place the work piece that will process in the organism of freezing trimmer, then cool off the work piece, the work piece deckle edge after the cooling can become fragile, the rethread pc granule is beaten the work piece, make the deckle edge on the work piece drop, the realization is to the effect of work piece deckle edge, can produce a large amount of dusts in the organism of freezing trimmer in this process, when the required oxygen concentration critical value of dust explosion is surpassed to the oxygen concentration in the organism, the condition of dust explosion can take place in the organism, and dust explosion can bring very big harm to each part of organism inner wall.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose of reducing damage to the freezing edge trimmer caused by dust explosion, the application provides an explosion-proof mechanism of the freezing edge trimmer.

The application provides an explosion-proof mechanism of freezing trimmer adopts following technical scheme:

the utility model provides an explosion-proof mechanism of freezing trimmer, includes that one end is used for the blast pipe that is linked together with the interior storehouse of organism and is used for providing inert gas's inert gas generating unit for the organism, be provided with the explosion-proof subassembly that leads to the inside damage of organism when being used for reducing the organism and produce the explosion in the blast pipe, the storehouse is provided with oxygen concentration sensor in the organism, works as when oxygen concentration sensor detects the interior oxygen concentration of organism and reaches the setting value, inert gas generating unit starts and to carrying nitrogen gas to the organism, be provided with the pipe on the organism.

Through adopting above-mentioned technical scheme, set up the oxygen concentration sensor in the organism and be used for the oxygen concentration in real time monitoring organism interior storehouse, after oxygen concentration sensor detected the oxygen concentration in the organism and reachd the predetermined value, inert gas takes place the unit and then injects inert gas in to the cavity of organism to make the partial oxygen in organism interior storehouse discharge from the pipe, with the oxygen concentration in reducing the organism, thereby can reduce the possibility that dust explosion appears in the organism interior storehouse. When oxygen concentration sensor broke down, perhaps the pipe was blocked up and is leaded to oxygen concentration to be in when the state on the high side always, the dust explosion can appear in the organism, when the dust explosion takes place for the organism inner chamber, carries out the pressure release in to the organism through explosion-proof assembly to alleviate gaseous damage degree of inflation to organism internal part in the twinkling of an eye.

Optionally, the duct and the exhaust pipe are both arranged on the top surface of the machine body.

Through adopting above-mentioned technical scheme, when reducing the inside dust explosion that takes place of organism, lead to explosion-proof subassembly or the condition that the dust splashes towards operating personnel, all set up the practical security that is favorable to improving this organism at the top surface of organism with breather pipe and blast pipe.

Optionally, the explosion-proof assembly includes a rupture disk, and the rupture disk is fixedly connected in the second vent pipe.

Through adopting above-mentioned technical scheme, the rupture disk seals in the gas vent department under the normal condition, when the explosion takes place in the machine interior storehouse, and the pressure in the organism increases in the twinkling of an eye, applys outside thrust to the inner wall of organism, and sets up the rupture disk, because rupture disk intensity itself is less than the intensity of organism lateral wall, so the rupture disk can be broken through by expanded gas earlier before the organism damages to the organism carries out the pressure release, reduces the circumstances that gas expansion's impact force produced destruction to organism itself.

Optionally, the explosion-proof assembly comprises a first installation barrel, a limiting plate and a reset spring, the first installation barrel is fixedly connected to the exhaust pipe, the limiting plate is fixedly connected to the first installation barrel, one end of the reset spring is fixedly connected to the limiting plate, the other end of the reset spring is fixedly connected to a sealing piston used for plugging the first installation barrel, the sealing piston is connected to the first installation barrel in a sliding mode, a through hole is formed in the first installation barrel, and the through hole is located between the sealing piston and the limiting plate.

Through adopting above-mentioned technical scheme, the shutoff is on first installation section of thick bamboo under the piston normal condition, when the internal explosion that appears of organism, and the internal gas expansion of organism produces thrust to the piston and makes the piston overcome the spring's elasticity effect and move towards the limiting plate direction, and then makes through-hole and blast pipe intercommunication, realizes the pressure release effect to the organism, reduces the circumstances that the impact force of gas expansion produced destruction to organism itself.

Optionally, fixedly connected with pole setting on the limiting plate, the through hole has been seted up in the sealed piston line, the pole setting runs through the setting in the through hole, be provided with the baffle in the pole setting, the through hole aperture is greater than the pole setting diameter and is less than the baffle diameter, the one side that reset spring was kept away from at sealed piston is kept away from to the baffle butt.

Through adopting above-mentioned technical scheme, the piston moves towards the limiting plate direction when gas expansion for piston rod and baffle separation, gas in the organism can flow to the external world through the through-hole, and then improve the pressure release effect to the organism.

Optionally, the baffle is fixedly connected with a sealing gasket, the sealing piston is provided with a mounting groove, and the sealing gasket is partially embedded in the mounting groove.

Through adopting above-mentioned technical scheme, baffle and piston butt under the normal condition through sealing up to inlay and establish at the mounting groove, improve the sealed effect between piston and the baffle, improve the sealed effect of piston to a first installation section of thick bamboo.

Optionally, the explosion-proof assembly comprises a second installation barrel, a plugging plate, a first hinge lug and a second hinge lug, the second installation seat is fixedly connected to the exhaust barrel, the first hinge lug is fixedly connected to the plugging plate, the second hinge lug is fixedly connected to the second installation barrel, the first hinge lug is hinged to the second hinge lug, the plugging plate is plugged at a barrel opening of the second installation barrel, and a locking assembly is arranged between the plugging plate and the second installation barrel.

Through adopting above-mentioned technical scheme, when producing the explosion in the organism, the gas inflation in the organism produces thrust to the shutoff board for the spacing effect of locking Assembly is overcome to the shutoff board, and the upset of second installation section of thick bamboo direction is kept away from to the court, thereby removes the shutoff effect to the second installation section of thick bamboo, and then carries out the pressure release to the organism, and this structure is favorable to reducing the condition that the impact force of gas inflation produced destruction to organism itself.

Optionally, the locking assembly comprises a locking rod, the locking rod is hinged to the second mounting cylinder, a convex block is fixedly connected to the locking rod, the convex block is an inclined plane towards one side of the blocking plate, one side, close to the locking rod, of the inclined plane inclines towards the direction of a hinge point of the locking rod, a locking spring is arranged between the locking rod and the second mounting cylinder, one end of the locking spring is fixedly connected to the locking rod, and the other end of the locking spring is fixedly connected to the second mounting cylinder.

By adopting the technical scheme, the locking rod is tightly attached to the plugging plate under the action of the locking spring in a normal state, and the lug on the locking rod limits the plugging plate, so that the limiting effect on the plugging plate can be realized, and the plugging plate is plugged at the opening end of the second mounting cylinder; when explosion occurs in the machine body, gas in the machine body expands to generate thrust on the plugging plate. The plugging plate is enabled to turn towards the direction far away from the second mounting cylinder, in the process, the locking overcomes the elastic action of the locking spring and turns towards the direction far away from the plugging plate, and the limiting effect on the plugging plate is relieved.

Optionally, a supporting plate is fixedly connected to the first hinge lug, a tension spring is arranged between the supporting plate and the second mounting cylinder, one end of the tension spring is fixedly connected to the supporting plate, and the other end of the tension spring is fixedly connected to the second mounting cylinder.

Through adopting above-mentioned technical scheme, when the internal explosion that takes place of organism, the spacing effect of lug is overcome towards keeping away from the upset of second installation section of thick bamboo direction to the shutoff board under expanding gas's thrust effect, this in-process second installation section of thick bamboo is under the effect of gas impact force, the shutoff board is opened rapidly and is strikeed a second installation section of thick bamboo, and the shutoff board can be rebounded and lock again on the lug under the striking effect, through setting up the extension spring, make the shutoff board open the back, keep the open mode, guarantee good pressure release effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the oxygen concentration sensor monitors the oxygen concentration in the machine body in real time, and when the oxygen concentration sensor detects that the oxygen concentration in the machine body reaches a preset value, the inert gas generating unit injects inert gas into the cavity of the machine body, so that the oxygen concentration in the internal bin of the machine body is reduced, and the possibility of dust explosion in the internal bin of the group can be reduced;

2. when the oxygen concentration sensor fails to cause that the oxygen concentration in the machine body is too high to cause dust explosion in the machine body, the explosion-proof assembly is used for timely relieving the pressure of the bin in the machine body, so that the condition that the impact force of gas expansion damages the machine body is reduced;

3. all set up pipe and blast pipe at the organism top, when the dust explosion takes place in the organism, can reduce the direct condition that splashes towards the human body of dust in explosion-proof subassembly and the organism, be favorable to improving the safety in utilization of the device.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying a rupture disk according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an explosion-proof assembly according to an embodiment of the present application.

Fig. 4 is a cross-sectional view of an embodiment of the present application for embodying a sealing piston.

Fig. 5 is a schematic structural diagram of an explosion-proof assembly according to an embodiment of the present application.

Description of the reference numerals: 1. a body; 11. an exhaust pipe; 12. an oxygen concentration sensor; 13. a conduit; 2. an inert gas generating unit; 21. a breather pipe; 22. an electromagnetic valve; 23. an inert gas tank; 3. an explosion-proof assembly; 31. a rupture disk; 4. a first mounting cylinder; 41. a limiting plate; 42. a return spring; 43. a through hole; 44. a through hole; 45. erecting a rod; 46. a baffle plate; 461. a gasket; 462. mounting grooves; 47. a sealing piston; 5. a second mounting cylinder; 51. a plugging plate; 52. a first hinge ear; 53. a second hinge ear; 54. a locking member; 55. a locking lever; 551. a bump; 552. a locking spring; 553. a support plate; 554. a tension spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1

The embodiment of the application discloses explosion-proof mechanism of freezing trimmer. Referring to fig. 1 and 2, the explosion-proof mechanism of the freezing edge trimmer comprises a control system and an inert gas generating unit 2 arranged in a machine body 1, wherein the inert gas generating unit 2 comprises an inert gas tank 22 arranged in the machine body 1, the upper end of the inert gas tank 22 is communicated with a vent pipe 21, the vent pipe 21 is provided with an electromagnetic valve 22, and the inert gas is nitrogen in the embodiment. Be provided with in the organism 1 and be used for detecting the oxygen concentration sensor 12 of organism 1 interior storehouse oxygen concentration, the intercommunication is provided with pipe 13 on the organism 1 top surface, and pipe 13 sets up when can reducing the dust explosion in the organism 1 at the top of organism 1, and the dust blowout directly splashes the condition to the human body. The initial state of the electromagnetic valve 22 is a closed body, when the oxygen concentration sensor 12 detects that the oxygen concentration in the cabin in the machine body 1 reaches a first preset value, the oxygen concentration sensor 12 triggers and sends a first sensing signal to the control system, and when the control system receives the first sensing signal, the electromagnetic valve 22 is controlled to be opened, so that the inert gas in the inert gas tank 22 enters the machine body 1 through the vent pipe 21, the air pressure in the machine body 1 is larger than the air pressure outside the machine body 1, the air in the machine body 1 can be discharged out of the machine body 1 through the guide pipe 13, the air discharged from the guide pipe 13 contains oxygen, the oxygen concentration in the machine body 1 is reduced, and the possibility of dust explosion in the machine body 1 is reduced; when the oxygen concentration sensor 12 detects that the oxygen concentration in the internal chamber of the machine body 1 is reduced to a second preset value, the oxygen concentration sensor 12 triggers and sends a second sensing signal to the control system, and the control system controls the electromagnetic valve 22 to close when receiving the second sensing signal, so as to stop conveying the inert gas to the internal chamber of the machine body 1.

The top end of the machine body 1 is vertically provided with an exhaust pipe 11, the exhaust pipe 11 is communicated with the machine body 1, the upper end of the exhaust pipe 11 is fixedly connected with a rupture disc 31, and when the pressure difference between two sides of the rupture disc 31 reaches a preset value under the pressure difference of the rupture disc 31, the rupture disc 31 is ruptured or falls off instantly, and dust and gas are discharged, so that the pressure relief effect on the machine body 1 is realized. The exhaust pipe 11 is arranged at the top of the machine body 1, so that the possibility that the rupture disk 31 splashes under the action of air pressure and causes injury to a human body when dust explosion occurs in the machine body 1 can be reduced. When the oxygen concentration sensor 12 fails, the oxygen concentration in the machine body 1 reaches a critical concentration, and the electromagnetic valve 22 cannot be normally opened to reduce the oxygen concentration in the machine body 1; or the duct 13 is blocked to cause the oxygen in the body not to be discharged normally, so that there is a possibility that dust explosion occurs in the body 1. When dust explosion happens to the bin in the machine body 1, gas in the machine body 1 expands instantly, so that the pressure in the machine body 1 is increased, and the limit value of the bearing pressure difference of the rupture disk 31 per se is far smaller than the limit value of the bearing pressure difference of the side of the machine body 1, so that the rupture disk 31 is equivalent to a weak point relative to the machine body 1, and when the bin pressure in the machine body 1 is increased, thrust is applied to the rupture disk 31, so that the rupture disk 31 is burst, so that the pressure relief effect is achieved on the machine body 1, the reduction of the dust explosion is facilitated, the impact force of gas expansion damages internal parts of the machine body 1, and a good explosion protection effect is achieved on the machine body 1.

The implementation principle of the embodiment 1 of the application is as follows: the cooling trimmer is in the course of the work, can produce the dust in the organism 1, when the required critical value of dust explosion is reached to the oxygen concentration in the organism 1, the easy condition that produces the dust explosion in the storehouse in the organism 1, set up oxygen concentration sensor 12 in the organism 1 and be used for carrying out real-time supervision to the oxygen concentration in the storehouse in the organism 1, when oxygen concentration sensor 12 detects the oxygen concentration in the storehouse in the organism 1 and reaches the required critical value of dust explosion, solenoid valve 22 is opened and is made the gas in the inert gas jar enter into the organism 1 in, in order to reduce oxygen concentration, thereby reduce the condition that dust explosion appears in the organism 1.

When the oxygen concentration sensor 12 fails or the conduit 13 is clogged to cause the oxygen concentration in the machine body 1 to exceed the critical value required for dust explosion, dust explosion may occur in the machine body 1. When dust explodes, the gas inside the machine body 1 expands to increase the pressure inside the machine body 1, the expanded gas exerts a thrust effect on the side wall of the machine body 1, and the limit value of the pressure difference borne by the rupture disk 31 is far lower than the limit value of the pressure difference borne by the side wall of the machine body 1, so that when the pressure inside the machine body 1 is too large, the rupture disk 31 is ruptured before the machine body 1, the pressure relief effect is achieved, and the condition that various parts inside the machine body 1 are damaged due to the impact of the expanded gas is reduced.

Example 2

As shown in fig. 3 and 4, the embodiment 2 of the present application is the same as the embodiment 1, except that the upper end of the exhaust pipe 11 is fixedly connected to the first installation cylinder 4 coaxially, the rectangular limiting plate 41 is fixedly connected to the inside of the first installation cylinder 4 horizontally, the limiting plate 41 is located at the upper end of the first installation cylinder 4, and a gap is left between the limiting plate 41 and the side wall of the first installation cylinder 4. The vertical fixedly connected with columniform pole setting 45 in limiting plate 41 lower surface, the cover is equipped with sealed piston 47 on the pole setting 45, and sealed piston 47 slides along the axis direction of first installation section of thick bamboo 4 and connects in first installation section of thick bamboo 4, and sealed piston 47 plays the shutoff effect to first installation section of thick bamboo 4, and the last vertical circular through hole 44 of having seted up of sealed piston 47, and the diameter of through hole 44 is greater than the diameter of pole setting 45. A return spring 42 is arranged between the first mounting tube 4 and the limiting plate 41, the upper end of the return spring 42 is fixedly connected to the limiting plate 41, and the lower end of the return spring 42 is fixedly connected to the sealing piston 47. The lower end fixedly connected with disc-shaped baffle 46 of pole setting 45, and the diameter of baffle 46 is greater than the diameter of through-hole 44, and baffle 46 butt is at the lower surface of sealing piston 47, and the last fixed surface of baffle 46 is connected with round sealed pad 461, and sealing piston 47 corresponds sealed pad 461 position and has seted up round mounting groove 462, and sealed pad 461 inlays and establishes in mounting groove 462 for improve the leakproofness between baffle 46 and the sealing piston 47. A plurality of through holes 43 are formed in the outer side wall of the first mounting cylinder 4, and the through holes 43 are located between the sealing piston 47 and the limiting plate 41.

The implementation principle of embodiment 2 of the application is as follows: when dust explosion takes place for the storehouse in organism 1, the gaseous inflation in the organism 1 makes the increase of 1 inside pressure of organism, gaseous thrust action is exerted to the lateral wall of organism 1 and sealed piston 47 after the inflation, sealed piston 47 moves towards limiting plate 41 direction under the gaseous promotion of inflation, sealed piston 47 of this in-process separates with baffle 46 earlier, gaseous after the inflation can pass through hole 44, partly spills over from through-hole 43, another part spills over from the space between limiting plate 41 and the first installation section of thick bamboo 4, the realization is to the pressure release effect in the storehouse in organism 1. When sealed piston 47 continues to move towards limiting plate 41, sealed piston 47 crosses through-hole 43 for through-hole 43 and blast pipe 11 intercommunication improve the pressure release effect to the interior storehouse of organism 1, reduce each part in the organism 1 and take place the condition of damaging because the impact of inflation gas.

Example 3

As shown in fig. 5, embodiment 3 of the present application is the same as embodiment 1 except that the upper end of the exhaust pipe 11 is coaxially and fixedly connected with a straight second mounting cylinder 5, the upper end of the second mounting cylinder 5 is provided with a plugging plate 51, the plugging plate 51 has a plugging effect on the second mounting cylinder 5, the plugging plate 51 is fixedly connected with a first hinge lug 52, the second mounting cylinder 5 is fixedly connected with a second hinge lug 53, the first hinge lug 52 is hinged to the second hinge lug 53, the first hinge lug 52 is fixedly connected with a support plate 553, a tension spring 554 is arranged between the support plate 553 and the second mounting cylinder 5, the tension spring 554 is obliquely arranged and located below the second hinge lug 53, and the tension spring 554 is in a stretched state.

One side that the second articulated ear 53 was kept away from to the second installation section of thick bamboo 5 articulates there is a check lock lever 55, the pin joint of check lock lever 55 and second installation section of thick bamboo 5 is located the lower extreme of check lock lever 55, be provided with locking spring 552 between check lock lever 55 and the second installation section of thick bamboo 5, locking spring 552 is located the pin joint top of check lock lever 55, and locking spring 552 one end fixed connection is on check lock lever 55, the other end fixed connection of locking spring 552 is on the second installation section of thick bamboo 5, locking spring 552 is in tensile state. The locking rod 55 is fixedly connected with a convex block 551 on one side facing the blocking plate 51, the lower surface of the convex block 551 abuts against the upper surface of the blocking plate 51, the lower surface of the convex block 551 is an inclined surface, and one side of the inclined surface, which is close to the locking rod 55, is inclined downwards to play a role in guiding.

The implementation principle of embodiment 3 of the application is as follows: when the storehouse takes place dust explosion in organism 1, the gaseous inflation in the organism 1 makes the inside pressure increase of organism 1, the gaseous thrust effect is exerted to the lateral wall and the shutoff board 51 of organism 1 after the inflation, when the pressure difference is too big in organism 1, shutoff board 51 breaks away from the limiting displacement of lug 551 and removes the shutoff effect to second installation section of thick bamboo 5 under the thrust effect of inflation gas, realize the pressure release effect to the storehouse in organism 1, reduce each part in the organism 1 and take place the condition of damaging because of inflation gas's impact. In the process, the plugging plate 51 is turned over in the direction away from the second mounting tube 5, and under the guiding action of the inclined plane, the locking rod 55 overcomes the elastic action of the locking spring 552 to move towards the direction away from the plugging plate 51, so that the locking effect on the plugging plate 51 is relieved. The back extension spring 554 is opened to shutoff board 51 and is carried on spacingly to shutoff board 51, reduces the circumstances that the opening part that shutoff board 51 rebounded back to the second installation section of thick bamboo 5 influences the pressure release effect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. An explosion-proof mechanism of freezing trimmer characterized in that: including blast pipe (11) that are used for being linked together with storehouse in organism (1) and inert gas generation unit (2) that are used for providing inert gas for organism (1), be provided with in blast pipe (11) and be used for reducing organism (1) and lead to explosion-proof subassembly (3) of organism (1) internal damage when exploding, the storehouse is provided with oxygen concentration sensor (12) in organism (1), works as when oxygen concentration sensor (12) detect organism (1) interior oxygen concentration and reach first default, inert gas generation unit (2) start and to carrying inert gas to organism (1), be provided with pipe (13) on organism (1).

2. The explosion-proof mechanism of a frozen edger of claim 1, wherein: the guide pipe (13) and the exhaust pipe (11) are arranged on the top surface of the machine body (1).

3. The explosion-proof mechanism of a freezing edger of claim 1, wherein: the explosion-proof assembly (3) comprises a rupture disk (31), and the rupture disk (31) is fixedly connected to the exhaust pipe (11).

4. The explosion-proof mechanism of a frozen edger of claim 1, wherein: explosion-proof subassembly (3) are including first installation section of thick bamboo (4), limiting plate (41) and reset spring (42), first installation section of thick bamboo (4) fixed connection is on blast pipe (11), limiting plate (41) fixed connection is in first installation section of thick bamboo (4), reset spring (42) one end fixed connection is on limiting plate (41), the other end fixedly connected with of reset spring (42) is used for sealed piston (47) of the first installation section of thick bamboo (4) of shutoff, sealed piston (47) are slided and are connected at first installation section of thick bamboo (4), through-hole (43) have been seted up on first installation section of thick bamboo (4), through-hole (43) are located sealed piston (47) between limiting plate (41).

5. The explosion-proof mechanism of a frozen edger of claim 4, wherein: fixedly connected with pole setting (45) on limiting plate (41), through hole (44) have been seted up on sealed piston (47), pole setting (45) are run through and are set up in through hole (44), be provided with baffle (46) on pole setting (45), through hole (44) aperture is greater than pole setting (45) diameter and is less than baffle (46) diameter, one side that reset spring (42) were kept away from in sealed piston (47) butt baffle (46).

6. The explosion-proof mechanism of a frozen edger of claim 5, wherein: fixedly connected with sealed pad (461) on baffle (46), mounting groove (462) have been seted up on sealed piston (47), sealed pad (461) inlays to be established in mounting groove (462).

7. The explosion-proof mechanism of a frozen edger of claim 1, wherein: explosion-proof subassembly (3) include second installation section of thick bamboo (5), shutoff board (51), first articulated ear (52) and second articulated ear (53), second installation section of thick bamboo (5) fixed connection is on the aiutage, first articulated ear (52) fixed connection is on shutoff board (51), second articulated ear (53) fixed connection is on second installation section of thick bamboo (5), just first articulated ear (52) are articulated with second articulated ear (53), shutoff board (51) shutoff is in the nozzle department of second installation section of thick bamboo (5), be provided with retaining member (54) between shutoff board (51) and second installation section of thick bamboo (5).

8. The explosion-proof mechanism of a frozen edger of claim 7, wherein: the locking member (54) comprises a locking rod (55), the locking rod (55) is hinged to the second mounting cylinder (5), a convex block (551) is fixedly connected to the locking rod (55), one side, facing the plugging plate (51), of the convex block (551) is an inclined surface, one side, close to the locking rod (55), of the inclined surface inclines towards the hinge point direction of the locking rod (55), a locking spring (552) is arranged between the locking rod (55) and the second mounting cylinder (5), one end of the locking spring (552) is fixedly connected to the locking rod (55), and the other end of the locking spring (552) is fixedly connected to the second mounting cylinder (5).

9. The explosion-proof mechanism of a frozen edger of claim 7, wherein: a support plate (553) is fixedly connected to the first hinge lug (52), a tension spring (554) is arranged between the support plate (553) and the second mounting cylinder (5), one end of the tension spring (554) is fixedly connected to the support plate (553), and the other end of the tension spring (554) is fixedly connected to the second mounting cylinder (5).

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