CN111679188A

CN111679188A - Motor fault monitoring device of industry thing networking

Info

Publication number: CN111679188A
Application number: CN202010539504.6A
Authority: CN
Inventors: 惠锦莉
Original assignee: Shandong Yijia Hongtong Technology Co ltd
Current assignee: Jiangsu Guandesheng Digital Technology Co ltd
Priority date: 2020-06-14
Filing date: 2020-06-14
Publication date: 2020-09-18
Anticipated expiration: 2040-06-14
Also published as: CN111679188B

Abstract

The invention discloses a motor fault monitoring device of an industrial Internet of things, relates to the technical field of monitoring of the Internet of things, and solves the problems that a monitoring device used at present does not have a function of detecting temperature and cannot well guarantee the normal temperature of a motor. A motor fault monitoring device of an industrial Internet of things comprises a base; the base also comprises a reinforcing rod and an exhaust hole; reinforcing rods are uniformly arranged at the top of the periphery of the base in a integrated manner, and the peripheries of the bottoms of the reinforcing rods are all provided with shoulder structures; two groups of exhaust holes are formed in the rear side of the base; through being provided with tiling and bee calling organ, can provide temperature monitoring and early warning function for monitoring devices, the thermocouple in the tiling lasts the temperature of real-time supervision motor to with data feedback in the controller, can long-range early warning carry out through the controller, can trigger bee calling organ simultaneously, through bee calling organ suggestion early warning, guarantee that the staff can find trouble motor the very first time and maintain.

Description

Motor fault monitoring device of industry thing networking

Technical Field

The invention relates to the technical field of monitoring of the Internet of things, in particular to a motor fault monitoring device of the industrial Internet of things.

Background

The motor is widely applied, can break down under long-term operation, prevents the trouble and enlarges, guarantees the important work of equipment normal operating, and the following trouble can appear in the motor, and the motor can produce too high temperature through frictional force when moving, generally dispels the heat through the radiator fan that the motor was taken oneself. .

Through retrieval, for example, a patent with the patent number of CN110554315A discloses a motor fault monitoring device for an industrial Internet of things, which comprises a dismounting mechanism and a waterproof mechanism; the disassembly mechanism: the disassembly mechanism comprises an installation plate and a fixed box, a connecting block is fixedly arranged on the front side of the installation plate, a T-shaped sliding groove is formed in the connecting block, a fixed block is fixedly connected to the rear side of the fixed box, the fixed block is connected with a bottom plate through a damping mechanism, and the bottom plate and the fixed block are in sliding connection with the T-shaped sliding groove; waterproof heat dissipation mechanism: waterproof heat dissipation mechanism includes arc breakwater and goes out the tuber pipe, the bottom side hinge of arc breakwater articulates there are two support columns, and this motor fault monitoring device of industry thing networking can dismantle this motor fault monitoring device, avoids the restriction in space, and the maintenance of being convenient for has heat dissipation and waterproof function simultaneously, avoids inside high temperature or intakes the damage that causes inside electrical components, convenient to use person's use.

Another for example, patent No. CN207924099U discloses a motor fault monitoring device of industry thing networking, including mounting panel, router and remote end, the equal fixedly connected with clamping screw in both sides at mounting panel top to clamping screw's surface cover is equipped with fixed metal strip, clamping screw's surperficial threaded connection has fixation nut, the fixed box of fixedly connected with between the top of mounting panel and the fixed metal strip, buffer protection device fixedly connected with under casing is passed through to the bottom of mounting panel, the fixed surface of box is connected with the display, the utility model relates to a motor fault monitoring technical field. This motor fault monitoring devices of industry thing networking has possessed buffering protective capability, can effectual reduction detecting element's vibrations, has guaranteed the normal safety monitoring of equipment to the motor, and has improved the detection accuracy and the life of equipment, has possessed the detection capability than comprehensive, and can long-range feedback and report to the police, and the security performance is high.

However, the monitoring device used at present does not have the function of detecting the temperature, the temperature of the motor cannot be well guaranteed to be normal, multiple groups of devices in a plant run simultaneously, and the overheated motor is difficult to find out for emergency maintenance in the first time and is not beneficial to safe use, so that the existing requirements are not met, and the motor fault monitoring device of the industrial internet of things is provided.

Disclosure of Invention

Problem (A)

The invention aims to provide a motor fault monitoring device of an industrial Internet of things, which aims to solve the problems that the conventional monitoring device provided in the background technology does not have the function of detecting the temperature, the normal temperature of a motor cannot be well ensured, and generally, multiple groups of equipment in a plant run simultaneously, so that an overheated motor is difficult to find for emergency maintenance at the first time and is not beneficial to safe use.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a motor fault monitoring device of an industrial Internet of things comprises a base; the base also comprises a reinforcing rod and an exhaust hole; reinforcing rods are uniformly arranged at the top of the periphery of the base in a integrated manner, and the peripheries of the bottoms of the reinforcing rods are all provided with shoulder structures; two groups of exhaust holes are formed in the rear side of the base; the top of the base is provided with an L-shaped seat in a sliding manner through a reinforcing rod; two groups of side plates are fixedly arranged at the tops of two sides of the base; a top cover is fixedly arranged at the tops of the L-shaped seat and the side plates, and the top of the reinforcing rod is fixedly connected with the top cover through a bolt; a rear end plate is fixedly arranged at the top of the rear side of the L seat; a strip-shaped hole is formed in the middle of the front side of the L seat, and a motor is fixedly arranged in the corner of the L seat through the strip-shaped hole; the front sides of the side plates are respectively provided with a rocking wheel in a rotating way through a rotating shaft; a telescopic fixing frame is fixedly arranged outside the motor; the telescopic fixing frame also comprises a sliding rod and a pull rod; the main body of the telescopic fixing frame is of a concave structure, sliding rods are uniformly arranged at the bottoms of the two sides of the telescopic fixing frame, and telescopic sliding frames are arranged outside the sliding rods in a sliding mode; a through hole is formed in the middle of the top of one side of the telescopic fixing frame, and a pull rod is arranged in the through hole in a sliding mode.

Preferably, the side plate further comprises an air inlet pipe, a one-way valve A and an air inlet cylinder; the rear ends of the inner sides of the side plates are respectively fixedly provided with an inner groove, and the positions of the side plates aligned with the rear sides of the inner grooves are respectively and externally connected with an air inlet pipe; the bottom of the outer side of the air inlet pipe is fixedly connected with a one-way valve A, and the bottom of the one-way valve A is connected with an air inlet cylinder.

Preferably, the inner groove also comprises a one-way valve B, a bent pipe and an air outlet; the top of the rear side of the inner groove is provided with a one-way valve B in a connected mode, and the top of the one-way valve B is provided with a bent pipe in a connected mode; the other end of each bent pipe is connected with an air outlet which is fixed on the inner side of the corresponding side plate; the air exit is the trapezoidal structure of falling, and eight gas vents have all been seted up downwards to the inboard of air exit, and the gas vent all runs through the air exit and connects the inside groove.

Preferably, the rocking wheel further comprises a transmission connecting rod and a piston plate; a shaft lever structure is uniformly arranged on one side of the inner end of the rocking wheel in a body type, and transmission connecting rods are rotatably arranged outside the shaft lever structure; the other end of the transmission connecting rod is provided with a piston plate in a rotating mode through a rotating shaft, and the piston plate is arranged in the inner groove in a sliding mode; the positions of the shaft lever structures between the two groups of rocking wheels are staggered.

Preferably, the front ends of the outer sides of the side plates are respectively rotatably provided with a transmission shaft through a rotating shaft, and the outer sides of the rear ends of the transmission shafts are respectively and fixedly provided with a bevel gear; the outer sides of the rotating shafts of the rocking wheels are fixedly provided with bevel gears, and the rocking wheels are in transmission connection with the transmission shaft through bevel gear meshing.

Preferably, the front ends of the transmission shafts are respectively and rotatably provided with a transmission bin, the other ends of the transmission bins are respectively and rotatably provided with a deformation bin through a rotating shaft, and the deformation bins are rotatably arranged outside the rotating shaft of the motor; the transmission shaft and the transmission bin are in transmission connection through a synchronous wheel and a synchronous belt; the transmission bin and the deformation bin are connected through a synchronous wheel and a synchronous belt.

Preferably, the telescopic fixing frame further comprises a connecting rod and a jacking screw rod; both sides of the pull rod are rotatably provided with connecting rods through hinge connection, and the outer ends of the connecting rods are rotatably connected with the inner sides of the telescopic sliding frames; and a screw hole is formed in the middle of the top of the other side of the telescopic fixing frame, and a jacking screw rod is fixedly arranged on the outer side of the telescopic fixing frame through penetrating the screw hole.

Preferably, two groups of sticking blocks are fixedly arranged at the bottom of the telescopic carriage, and thermocouples are embedded in the sticking blocks; the thermocouples in the sticking blocks are all provided with connecting wires, and the connecting wires penetrate through the rear end plate and are connected with a controller; the top of top cap is fixed with bee calling organ, and bee calling organ sets up the circuit and communicates with each other with the controller is connected.

(III) advantageous effects

The invention provides a motor fault monitoring device of an industrial Internet of things, which can provide temperature monitoring and early warning functions for the monitoring device by arranging a patch and a buzzer, wherein a thermocouple in the patch continuously monitors the temperature of a motor in real time, data is fed back to a controller, the controller can remotely perform early warning, the buzzer can be triggered, the early warning is prompted by the buzzer, and a worker can be guaranteed to find a fault motor for maintenance at the first time.

Secondly, shake the setting of wheel and inside groove, for monitoring devices provides the air inlet function, can drive the piston board through rocking wheel cooperation transmission connecting rod and last reciprocating motion, move in the inside groove through the piston, gas with in the inside groove is arranged into the air exit, continuously blow to the motor with the air current through the air exit, for the motor provides stable taking a breath and the function of continuously cooling down, can block the entering of dust when taking a breath, it is little and the impurity dust is few to compare the radiating mode resistance of fan, can guarantee gaseous flow, it cools down to last the efficient to the motor, reduce the fault rate of motor.

Moreover, flexible mount has flexible function, utilizes the tight screw in top to impel the pull rod, can utilize the flexible balladeur train of the taut both sides of connecting rod, fixes the tiling in the outside of motor, fixes the tiling through the mode of adjusting, can be applicable to the motor of different models, and the suitability is strong, and the adjustment is convenient.

Drawings

FIG. 1 is a schematic front perspective view of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention;

FIG. 3 is a schematic bottom view of an embodiment of the present invention;

FIG. 4 is a schematic perspective exploded view of an embodiment of the present invention;

FIG. 5 is a schematic axial side disassembled structure in the embodiment of the present invention;

FIG. 6 is a schematic cross-sectional structural view of a deformation bin in an embodiment of the invention;

FIG. 7 is a schematic perspective view of a retractable fastening frame according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a system flow structure according to an embodiment of the present invention;

in fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:

1. a base; 101. a reinforcing rod; 102. an exhaust hole; 2. an L seat; 3. a side plate; 301. an air inlet pipe; 302. a one-way valve A; 303. an air inlet cylinder; 4. an inner tank; 401. a check valve B; 402. bending the pipe; 403. an air outlet; 5. a rear end plate; 6. a motor; 7. shaking the wheel; 701. a transmission connecting rod; 702. a piston plate; 8. a drive shaft; 9. a transmission bin; 10. a deformation bin; 11. a telescopic fixing frame; 1101. a slide bar; 1102. a pull rod; 1103. a connecting rod; 1104. tightly pushing the screw; 12. a telescopic carriage; 13. sticking blocks; 14. a top cover; 15. a controller; 16. a buzzer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The thermocouple referred to in the present invention (model Pt100WRNK) is available either by private customization or commercially available.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a motor fault monitoring device of an industrial Internet of things comprises a base 1; the base 1 also comprises a reinforcing rod 101 and an exhaust hole 102; reinforcing rods 101 are uniformly arranged at the top of the periphery of the base 1, and the peripheries of the bottoms of the reinforcing rods 101 are all provided with shoulder structures; two groups of exhaust holes 102 are formed in the rear side of the base 1; the top of the base 1 is provided with an L seat 2 in a sliding way through a reinforcing rod 101; two groups of side plates 3 are fixedly arranged at the tops of two sides of the base 1; the side plate 3 further comprises an air inlet pipe 301, a one-way valve A302 and an air inlet cylinder 303; the rear ends of the inner sides of the side plates 3 are respectively fixedly provided with an inner groove 4, and the positions of the side plates 3 aligned with the rear sides of the inner grooves 4 are respectively and externally connected with an air inlet pipe 301; wherein, the inner tank 4 also comprises a one-way valve B401, a bent pipe 402 and an air outlet 403; the top of the rear side of the inner groove 4 is provided with a one-way valve B401 in a connecting way, and the top of the one-way valve B401 is provided with a bent pipe 402 in a connecting way; the other end of the elbow pipe 402 is provided with an air outlet 403 in a connecting way, and the air outlet 403 is fixed on the inner side of the side plate 3; the air outlets 403 are all in an inverted trapezoidal structure, eight groups of air outlets are formed downwards on the inner sides of the air outlets 403, and the air outlets penetrate through the air outlets 403 and are connected with the inner groove 4; the bottom of the outer side of the air inlet pipe 301 is fixedly connected with a one-way valve A302, and the bottom of the one-way valve A302 is connected with an air inlet cylinder 303; the passing direction of the check valve a302 is such that the air inlet pipe 303 can pass through the air inlet pipe 301; a top cover 14 is fixedly arranged at the tops of the L-shaped seat 2 and the side plate 3, and the top of the reinforcing rod 101 is fixedly connected with the top cover 14 through a matched bolt; the top of the rear side of the L seat 2 is fixedly provided with a rear end plate 5; a strip-shaped hole is formed in the middle of the front side of the L seat 2, and a motor 6 is fixedly arranged in the corner of the L seat 2 through the strip-shaped hole; the front sides of the side plates 3 are respectively provided with a rocking wheel 7 through a rotating shaft in a rotating way; wherein, the rocking wheel 7 also comprises a transmission connecting rod 701 and a piston plate 702; a shaft rod structure is uniformly arranged on one side of the inner end of the rocking wheel 7 in a whole manner, and a transmission connecting rod 701 is rotatably arranged outside the shaft rod structure; the other end of the transmission connecting rod 701 is provided with a piston plate 702 in a rotating way through a rotating shaft, and the piston plate 702 is arranged in the inner groove 4 in a sliding way; the positions of the shaft lever structures between the two groups of rocking wheels 7 are staggered; wherein, the front ends of the outer sides of the side plates 3 are respectively provided with a transmission shaft 8 through a rotating shaft in a rotating way, and the outer sides of the rear ends of the transmission shafts 8 are respectively fixedly provided with a bevel gear; bevel gears are fixedly arranged on the outer sides of the rotating shafts of the rocking wheels 7, and the rocking wheels 7 are in transmission connection with the transmission shaft 8 through bevel gear meshing; wherein, the front ends of the transmission shafts 8 are respectively and rotatably provided with a transmission bin 9, the other ends of the transmission bins 9 are respectively and rotatably provided with a deformation bin 10 through a rotating shaft, and the deformation bins 10 are rotatably arranged outside the rotating shaft of the motor 6; the transmission shaft 8 and the transmission bin 9 are in transmission connection through a synchronous wheel and a synchronous belt; the transmission bin 9 and the deformation bin 10 are both connected by arranging a synchronous wheel and a synchronous belt in a transmission way; a telescopic fixing frame 11 is fixedly arranged outside the motor 6; the telescopic fixing frame 11 further comprises a sliding rod 1101 and a pull rod 1102; the main body of the telescopic fixing frame 11 is of a concave structure, sliding rods 1101 are uniformly arranged at the bottoms of two sides of the telescopic fixing frame 11, and telescopic sliding frames 12 are arranged outside the sliding rods 1101 in a sliding manner; a through hole is arranged in the middle of the top of one side of the telescopic fixing frame 11, and a pull rod 1102 is arranged in the through hole in a sliding manner.

Wherein, the telescopic fixing frame 11 also comprises a connecting rod 1103 and a jacking screw 1104; both sides of the pull rod 1102 are rotatably provided with connecting rods 1103 through hinge connections, and the outer ends of the connecting rods 1103 are rotatably connected with the inner sides of the telescopic carriages 12; a screw hole is arranged in the middle of the top of the other side of the telescopic fixing frame 11, and a jacking screw 1104 is fixedly arranged on the outer side of the telescopic fixing frame 11 after penetrating through the screw hole.

Wherein, two groups of sticking blocks 13 are fixedly arranged at the bottom of the telescopic carriage 12, and thermocouples are embedded in the sticking blocks 13; the thermocouples in the sticking block 13 are all provided with connecting wires, and the connecting wires penetrate through the rear end plate 5 and are connected with a controller 15; the top of the top cover 14 is fixedly provided with a buzzer 16, and the buzzer 16 is provided with a circuit which is communicated with the controller 15.

The working principle is as follows: when the temperature sensor is used, the temperature of the shell of the motor 6 can be monitored and monitored in real time through the patch 13 so as to carry out early warning, when the surface temperature of the motor 6 is too high, the thermocouple in the patch 13 can be used for sensing and feeding back the temperature in real time, and when the temperature is too high, the controller 15 receives a signal and can remotely control the temperature sensor to be closed or feed back the signal to the buzzer 16, so that the buzzer 16 can give an alarm and flash light, and a worker can find out a failed motor as soon as possible.

The motor 6 is connected with a transmission part through a coupler to carry out transmission; in the motion process of the motor 6, the transmission shaft 8 is driven to continuously rotate through the synchronizing wheel and the synchronous belt in the transmission bin 9 and the deformation bin 10, the transmission shaft 8 is used for driving the rocking wheel 7 to synchronously rotate, the rocking wheel 7 drives the transmission connecting rod 701 and the piston plate 702 to continuously reciprocate, air is discharged into the inner groove 4 through the air inlet cylinder 303 and the one-way valve A302 by utilizing the piston principle, and is discharged into the air outlet 403 through the one-way valve B401 to continuously blow the motor 6, and the motor 6 is continuously cooled.

Mounting manner of the telescopic fixing frame 11: the puller screw 1104 is screwed, so that the pull rod 1102 can be pulled tightly, the telescopic sliding frames 12 on the two sides are drawn close inwards, and the sticking block 13 is fixed outside the motor 6, so that the temperature of the thermocouple on the motor 6 can be monitored.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a motor fault monitoring device of industry thing networking which characterized in that: comprises a base (1); the base (1) also comprises a reinforcing rod (101) and an exhaust hole (102); reinforcing rods (101) are uniformly arranged at the top of the periphery of the base (1), and the peripheries of the bottoms of the reinforcing rods (101) are all provided with shoulder structures; two groups of exhaust holes (102) are formed in the rear side of the base (1); the top of the base (1) is provided with an L-shaped seat (2) in a sliding manner through a reinforcing rod (101); two groups of side plates (3) are fixedly arranged at the tops of two sides of the base (1); a top cover (14) is fixedly arranged at the tops of the L-shaped seat (2) and the side plate (3), and the top of the reinforcing rod (101) is fixedly connected with the top cover (14) through a bolt in a matching manner; a rear end plate (5) is fixedly arranged at the top of the rear side of the L seat (2); a strip-shaped hole is formed in the middle of the front side of the L seat (2), and a motor (6) is fixedly arranged in the corner of the L seat (2) through the strip-shaped hole; the front sides of the side plates (3) are respectively provided with a rocking wheel (7) through a rotating shaft in a rotating way; a telescopic fixing frame (11) is fixedly arranged outside the motor (6); the telescopic fixing frame (11) also comprises a sliding rod (1101) and a pull rod (1102); the main body of the telescopic fixing frame (11) is of a concave structure, sliding rods (1101) are uniformly arranged at the bottoms of two sides of the telescopic fixing frame (11), and telescopic sliding frames (12) are arranged outside the sliding rods (1101) in a sliding mode; a through hole is formed in the middle of the top of one side of the telescopic fixing frame (11), and a pull rod (1102) is arranged in the through hole in a sliding mode.

2. The motor fault monitoring device of the industrial internet of things as claimed in claim 1, wherein: the side plate (3) further comprises an air inlet pipe (301), a one-way valve A (302) and an air inlet cylinder (303); the rear ends of the inner sides of the side plates (3) are respectively fixedly provided with an inner groove (4), and the positions of the side plates (3) aligned with the rear sides of the inner parts of the inner grooves (4) are respectively and outwards connected with an air inlet pipe (301); the bottom of the outer side of the air inlet pipe (301) is fixedly connected with a one-way valve A (302), and the bottom of the one-way valve A (302) is connected with an air inlet cylinder (303).

3. The motor fault monitoring device of the industrial internet of things as claimed in claim 2, wherein: the inner tank (4) also comprises a one-way valve B (401), an elbow (402) and an exhaust outlet (403); the top of the rear side of the inner groove (4) is provided with a one-way valve B (401) in a connected mode, and the top of the one-way valve B (401) is provided with a bent pipe (402) in a connected mode; the other end of each bent pipe (402) is provided with an air outlet (403) in a connecting manner, and the air outlets (403) are fixed on the inner sides of the side plates (3); air exit (403) are the trapezoidal structure of falling, and eight groups of gas vents have all been seted up downwards to the inboard of air exit (403), and the gas vent all runs through air exit (403) and connects inside groove (4).

4. The motor fault monitoring device of the industrial internet of things as claimed in claim 1, wherein: the rocking wheel (7) also comprises a transmission connecting rod (701) and a piston plate (702); a shaft rod structure is uniformly arranged on one side of the inner end of the rocking wheel (7), and transmission connecting rods (701) are rotatably arranged outside the shaft rod structure; the other end of the transmission connecting rod (701) is rotatably provided with a piston plate (702) through a rotating shaft, and the piston plate (702) is arranged in the inner groove (4) in a sliding manner; the positions of the shaft rod structures between the two groups of rocking wheels (7) are staggered.

5. The motor fault monitoring device of the industrial internet of things as claimed in claim 1, wherein: the front ends of the outer sides of the side plates (3) are respectively rotatably provided with a transmission shaft (8) through a rotating shaft, and the outer sides of the rear ends of the transmission shafts (8) are respectively fixedly provided with a bevel gear; the outer sides of the rotating shafts of the rocking wheels (7) are fixedly provided with bevel gears, and the rocking wheels (7) are in transmission connection with the transmission shaft (8) through bevel gear meshing.

6. The motor fault monitoring device of the industrial internet of things as claimed in claim 5, wherein: the front ends of the transmission shafts (8) are respectively and rotatably provided with a transmission bin (9), the other ends of the transmission bins (9) are respectively and rotatably provided with a deformation bin (10) through a rotating shaft, and the deformation bins (10) are rotatably arranged outside the rotating shaft of the motor (6); the transmission shaft (8) and the transmission bin (9) are in transmission connection through a synchronous wheel and a synchronous belt; the transmission bin (9) and the deformation bin (10) are connected through a synchronous wheel and a synchronous belt.

7. The motor fault monitoring device of the industrial internet of things as claimed in claim 1, wherein: the telescopic fixing frame (11) also comprises a connecting rod (1103) and a jacking screw rod (1104); both sides of the pull rod (1102) are rotatably provided with connecting rods (1103) through hinge connection, and the outer ends of the connecting rods (1103) are rotatably connected with the inner sides of the telescopic sliding carriages (12); a screw hole is formed in the middle of the top of the other side of the telescopic fixing frame (11), and a jacking screw rod (1104) penetrates through the screw hole and is fixedly arranged on the outer side of the telescopic fixing frame (11).

8. The motor fault monitoring device of the industrial internet of things as claimed in claim 1, wherein: two groups of sticking blocks (13) are fixedly arranged at the bottom of the telescopic carriage (12), and thermocouples are embedded in the sticking blocks (13); the thermocouples in the sticking block (13) are all provided with connecting wires, and the connecting wires penetrate through the rear end plate (5) and are connected with a controller (15); the top of the top cover (14) is fixedly provided with a buzzer (16), and the buzzer (16) is provided with a circuit which is communicated with the controller (15).