阅读说明：本技术 一种机械式的线盘机自动止停装置 (Mechanical automatic stop device of wire coil machine ) 是由 张大涌 于 2019-11-21 设计创作，主要内容包括：本发明公开了一种机械式的线盘机自动止停装置,包括安装板、长度测量单元、压紧单元、异常检测单元和紧急停止单元,安装板的后侧面固定连接有电机,电机的输出轴穿过安装板的通孔,电机的输出轴前端固定连接有安装轴,安装轴的外弧面后端固定连接有制动盘,安装板的前侧面中部固定连接有第三固定板,第三固定板的左侧面固定连接有电动推杆,电动推杆的左端固定连接有刹车片,刹车片为弧形结构,刹车片的内弧面与制动盘的外弧面对应设置,安装板的前侧面后端固定连接有支撑板,该机械式的线盘机自动止停装置结构新颖,不需要通过外部设备测量线缆的长度,能够自动根据不同的情况采取相应的止停措施,安全性高,操作方便。(The invention discloses a mechanical automatic stopping device of a wire coiling machine, which comprises a mounting plate, a length measuring unit, a pressing unit, an abnormality detecting unit and an emergency stopping unit, wherein the rear side surface of the mounting plate is fixedly connected with a motor, an output shaft of the motor penetrates through a through hole of the mounting plate, the front end of the output shaft of the motor is fixedly connected with a mounting shaft, the rear end of the outer arc surface of the mounting shaft is fixedly connected with a brake disc, the middle part of the front side surface of the mounting plate is fixedly connected with a third fixing plate, the left side surface of the third fixing plate is fixedly connected with an electric push rod, the left end of the electric push rod is fixedly connected with a brake pad, the brake pad is of an arc structure, the inner arc surface of the brake pad is arranged corresponding to the outer arc surface of the brake disc, the rear end of the, can take corresponding stopping measure according to the condition of difference automatically, the security is high, convenient operation.)

1. The utility model provides an automatic stop device of drum machine of mechanical type which characterized in that: the device comprises a mounting plate (1), a length measuring unit (5), a pressing unit (6), an abnormality detecting unit (7) and an emergency stop unit (8);

mounting plate (1): the rear side face of mounting panel (1) fixedly connected with motor (4), the output shaft of motor (4) passes the through-hole of mounting panel (1), the output shaft front end fixedly connected with installation axle (11) of motor (4), the extrados rear end fixedly connected with brake disc (15) of installation axle (11), the leading side middle part fixedly connected with third fixed plate (9) of mounting panel (1), the left side fixedly connected with electric putter (17) of third fixed plate (9), the left end fixedly connected with brake block (16) of electric putter (17), brake block (16) are the arc structure, the intrados of brake block (16) corresponds the setting with the extrados of brake disc, the leading side rear end fixedly connected with backup pad (19) of mounting panel (1), the front end fixedly connected with rectangle frame (18) of backup pad (19), the middle part of the mounting plate (1) is rotatably connected with a connecting shaft (20);

length measurement unit (5): the length measuring unit (5) is arranged at the lower end of the interior of the rectangular frame (18);

a pressing unit (6): the pressing unit (6) is arranged at the upper end of the rectangular frame (18);

abnormality detection unit (7): the abnormality detection unit (7) is arranged in the middle of the front side face of the mounting plate (1);

emergency stop unit (8): the emergency stop unit (8) is arranged at the left end of the front side surface of the mounting plate (1);

wherein: still include PLC controller (2), PLC controller (2) fixed connection is in the leading flank upper end of mounting panel (1), external power source is connected to the input electricity of mounting panel (1), the output of PLC controller (2) is the input of electric connection motor (4) and electric putter (17) respectively.

2. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: the length measuring unit (5) comprises a rotating shaft (51), a bearing wheel (52), a first photoelectric sensor (53) and a pin (54), wherein the two ends of the rotating shaft (51) are respectively connected with the lower ends of the inner front side plate and the inner rear side plate of the rectangular frame (18) in a rotating mode, the bearing wheel (52) is fixedly connected to the outer arc surface of the rotating shaft (51), the outer end of the arc surface of the bearing wheel (52) is of a concave structure, the first photoelectric sensor (53) is fixedly connected to the inner front side surface of the rectangular frame (18), the pin (54) is fixedly connected to the front side surface of the bearing wheel (52), the first photoelectric sensor (53) and the pin (54) are correspondingly arranged, and the output end of the first photoelectric sensor (53) is electrically connected with the input end of the PLC (2).

3. The mechanical automatic stop device for the wire coiling machine as claimed in claim 2, wherein: the pressing unit (6) comprises sliding grooves (61), sliding blocks (62), supporting frames (63), limiting rings (64), an upper pressing wheel (65) and T-shaped screws (66), the sliding grooves (61) are symmetrically arranged at the upper ends of the insides of the rectangular frames (18), the T-shaped screws (66) are in threaded connection with the middles of the top plates of the rectangular frames (18), the supporting frames (63) are of inverted U-shaped structures, the lower ends of the T-shaped screws (66) penetrate through round holes of the top plates of the supporting frames (63), the limiting rings (64) are provided with two limiting rings (64) which are fixedly connected with the outer cambered surfaces of the lower ends of the T-shaped screws (66), the two limiting rings (64) are respectively positioned above and below the supporting frames (63), the sliding blocks (62) are provided with two limiting rings which are symmetrically arranged at the front ends and the rear ends of the supporting frames (63), the sliding blocks (62) are in sliding connection with the insides of the corresponding sliding grooves (61), and the upper pressing wheel (65) is, the upper pressure wheel (65) is arranged corresponding to the bearing wheel (52).

4. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: the abnormity detection unit (7) comprises a buffer roller (71), a second photoelectric sensor (72), a third photoelectric sensor (73), a first spring (74) and a connecting rod (75), the upper end of the connecting rod (75) is fixedly connected with the front end of the connecting shaft (20), the rear end of the buffer roller (71) is fixedly connected with the lower end of the connecting rod (75), one end of the first spring (74) is fixedly connected with the right side face of the connecting rod (75), the other end of the first spring (74) is fixedly connected with the front side face of the mounting plate (1) through the connecting plate, the second photoelectric sensor (72) is fixedly connected with the middle part of the front side face of the mounting plate (1), the third photoelectric sensor (73) is fixedly connected with the lower end of the front side face of the mounting plate (1), and the second photoelectric sensor (72) and the third photoelectric sensor (73) are both arranged corresponding to the buffer roller (71), the output ends of the second photoelectric sensor (72) and the third photoelectric sensor (73) are electrically connected with the input end of the PLC (2).

5. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: the emergency stop unit (8) comprises a pin shaft (81), a pawl (82), a first fixing plate (83), a second spring (84), a second fixing plate (85), an electromagnet (86), a metal block (87) and a ratchet wheel (88), the pin shaft (81) is fixedly connected to the upper end of the front side face of the mounting plate (1), the pawl (82) is rotatably connected with the outer arc face of the pin shaft (81), the first fixing plate (83) and the second fixing plate (85) are fixedly connected with the front side face of the mounting plate (1), the first fixing plate (83) is located above the right side of the pawl (82), the second fixing plate (85) is located below the left side of the pawl (82), the lower end of the second spring (84) is fixedly connected with the upper surface of the pawl (82), and the upper end of the second spring (84) is fixedly connected with the first fixing plate (83), the electromagnet (86) is fixedly connected to the upper surface of the second fixing plate (85), the metal block (87) is fixedly connected to the lower surface of the pawl (82), the metal block (87) and the electromagnet (86) are arranged correspondingly, and the input end of the electromagnet (86) is electrically connected with the output end of the PLC (2).

6. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: still include display screen (3) and bee calling organ (10), the equal fixed connection in the leading flank upper end of mounting panel (1) of display screen (3) and bee calling organ (10), the output of PLC controller (2) is connected to the input electricity of display screen (3) and bee calling organ (10).

7. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: still wrap round pin key (12) and pressure sensor (14), round pin key (12) fixed connection is in the cambered surface outer end of installation axle (11), pressure sensor (14) fixed connection is in the middle part of round pin key (12), the probe of pressure sensor (14) is located the outside of round pin key (12), the input of PLC controller (2) is connected to the output electricity of pressure sensor (14).

8. The mechanical automatic stop device for the wire coiling machine as claimed in claim 1, wherein: the device is characterized by further comprising a fixed stop block (13), wherein the fixed stop block (13) is in threaded connection with the left end of the mounting shaft (11).

Technical Field

The invention relates to the technical field of wire coiling machines, in particular to a mechanical automatic stopping device of a wire coiling machine.

Background

After the production of the cable is finished, the large-coil cable is usually required to be wound on a small wire coil to be packaged according to the requirements of customers, the work needs to be finished by using a wire coil machine, the wire coil machine can cause the cable to be broken or wound and knotted in the winding process due to the fact that the running speed is not coordinated or equipment faults occur in the winding process, the production efficiency is reduced due to the situations, product waste is caused, certain economic loss is brought to companies, excessive pulling of the cable can be avoided if the wire coil machine can stop winding in time before the situations occur, the generation of bad products is reduced, the existing wire coil machine stopping device usually stops braking naturally through a motor, the production situation cannot be effectively pre-warned, the stopping is not rapid enough, no safety protection measures are provided, and the length of the cable needs to be measured by means of external equipment, the practicability is poor, and a mechanical automatic stopping device of the wire coiling machine is provided for solving the defects.

Disclosure of Invention

The invention aims to overcome the existing defects and provides a mechanical automatic stopping device of a wire coiling machine, which has a novel structure, does not need to measure the length of a cable through external equipment, can automatically take corresponding stopping measures according to different conditions, has high safety and convenient operation, and can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a mechanical automatic stopping device of a wire coil machine comprises a mounting plate, a length measuring unit, a pressing unit, an abnormality detection unit and an emergency stopping unit;

mounting a plate: the brake pad is of an arc structure, the inner arc surface of the brake pad is arranged corresponding to the outer arc surface of the brake disc, the rear end of the front side surface of the mounting plate is fixedly connected with a support plate, the front end of the support plate is fixedly connected with a rectangular frame, and the middle part of the mounting plate is rotatably connected with a connecting shaft;

a length measuring unit: the length measuring unit is arranged at the lower end of the inside of the rectangular frame;

a pressing unit: the pressing unit is arranged at the upper end of the rectangular frame;

an abnormality detection unit: the abnormity detection unit is arranged in the middle of the front side surface of the mounting plate;

an emergency stop unit: the emergency stop unit is arranged at the left end of the front side surface of the mounting plate;

wherein: the device also comprises a PLC controller, the PLC controller is fixedly connected to the upper end of the front side face of the mounting plate, the input end of the mounting plate is electrically connected with an external power supply, the output end of the PLC controller is respectively and electrically connected with the input ends of the motor and the electric push rod, the T-shaped screw rod is rotated, the T-shaped screw rod is moved downwards relative to the rectangular frame, the lower end of the T-shaped screw rod pushes the support frame to move through the limiting ring, the support frame slides and moves up and down in the sliding groove through the sliding block, so as to drive the pressing wheel to move and adjust the compaction degree of the cable, the bearing wheel is driven to rotate during cable conveying, the first photoelectric sensor transmits a signal to the PLC controller through the detection pin column, the PLC controller counts and calculates the length of the cable according to the bearing of the bearing wheel, when the device is normally stopped, the PLC controller controls the electric push rod to start, the electric push rod pushes the brake pad to, when an emergency occurs, the PLC controller energizes the electromagnet, the electromagnet is magnetic after being energized, the metal block is adsorbed, the metal block drives the pawl to move downwards to enable the lower end of the pawl to be meshed with teeth of the ratchet wheel to stop emergently, the operation is safe and reliable, the interlocking fault caused by too slow stopping speed is prevented, the buffer roller is driven to move upwards when a cable is conveyed, the buffer roller drives the connecting rod and the connecting shaft to rotate, the connecting rod stretches the first spring, when the cable is broken or loosened excessively, the first spring pulls the connecting rod to move downwards, when the third photoelectric sensor detects the buffer roller, a signal is conveyed to the PLC controller, the PLC controller receives the corresponding signal and then controls the buzzer to start to give out a warning to people, and simultaneously sends a signal to the display screen to enable the display screen to display the abnormal reason, when the tensile force of the cable is too large, the buffer roller is driven to the position of the second photoelectric sensor by, second photoelectric sensor sends a signal for the PLC controller after detecting the buffer roller, send a signal for buzzer and display screen send signal simultaneously, send the warning to people, can detect the anomaly of different situation, high durability and convenient use, pressure sensor real-time detection is to the torsion size of drum, and transfer signal gives the PLC controller, the PLC controller is through discerning whether pressure sensor's pressure size control electro-magnet starts in the twinkling of an eye, stop according to above-mentioned principle, play secondary protection's effect, the security of using has further been promoted.

Further, the length measurement unit includes pivot, carrier wheel, a photoelectric sensor and round pin post, the both ends of pivot rotate with the inside preceding curb plate of rectangle frame and posterior lateral plate lower extreme respectively and are connected, carrier wheel fixed connection is in the extrados of pivot, the cambered surface outer end of carrier wheel is the spill structure, a photoelectric sensor fixed connection is in the inside leading flank of rectangle frame, round pin post fixed connection is in the leading flank of carrier wheel, a photoelectric sensor and round pin post correspond the setting, the input of PLC controller is connected to a photoelectric sensor's output electricity, carries out length measurement to the cable.

Furthermore, the compressing unit comprises a chute, a slide block, a supporting frame, a limiting ring, an upper pressing wheel and a T-shaped screw rod, the sliding grooves are symmetrically arranged at the upper end inside the rectangular frame, the T-shaped screw rod is in threaded connection with the middle part of the top plate of the rectangular frame, the support frame is of an inverted U-shaped structure, the lower end of the T-shaped screw rod penetrates through a circular hole of a top plate of the support frame, two limiting rings are arranged and are fixedly connected with the outer cambered surface at the lower end of the T-shaped screw rod, the two limiting rings are respectively positioned above and below the supporting frame, the two sliding blocks are symmetrically arranged at the front end and the rear end of the supporting frame, the sliding blocks are connected with the corresponding sliding chutes in a sliding way, the upper pinch roller is rotatably connected with the lower end of the side plate of the support frame through a connecting shaft, and the upper pinch roller and the bearing wheel are correspondingly arranged to adjust the compression degree of the cable, so that the cable length measurement is more accurate.

Furthermore, the abnormity detection unit comprises a buffer roller, a second photoelectric sensor, a third photoelectric sensor, a first spring and a connecting rod, the upper end of the connecting rod is fixedly connected with the front end of the connecting shaft, the rear end of the buffer roller is fixedly connected with the lower end of the connecting rod, one end of the first spring is fixedly connected with the right side surface of the connecting rod, the other end of the first spring is fixedly connected with the front side surface of the mounting plate through the connecting plate, the second photoelectric sensor is fixedly connected with the middle part of the front side surface of the mounting plate, the third photoelectric sensor is fixedly connected with the lower end of the front side surface of the mounting plate, the second photoelectric sensor and the third photoelectric sensor are both arranged corresponding to the buffer roller, the output ends of the second photoelectric sensor and the third photoelectric sensor are electrically connected with the input end of the PLC controller, and the second photoelectric sensor and the third photoelectric sensor are used for judging different fault conditions, the detection is convenient.

Further, the emergency stop unit comprises a pin shaft, a pawl, a first fixing plate, a second spring, a second fixing plate, an electromagnet, a metal block and a ratchet wheel, the pin shaft is fixedly connected to the upper end of the front side face of the mounting plate, the pawl is rotatably connected with the outer arc face of the pin shaft, the first fixing plate and the second fixing plate are both fixedly connected with the front side face of the mounting plate, the first fixing plate is positioned above the right side of the pawl, the second fixing plate is positioned below the left side of the pawl, the lower end of the second spring is fixedly connected with the upper surface of the pawl, the upper end of the second spring is fixedly connected with the first fixing plate, the electromagnet is fixedly connected with the upper surface of the second fixing plate, the metal block is fixedly connected with the lower surface of the pawl, the metal block is arranged corresponding to the electromagnet, and the input end of the electromagnet, the mounting shaft is stopped urgently to prevent chain faults caused by inertial rotation.

Further, still include display screen and bee calling organ, the equal fixed connection of display screen and bee calling organ is in the leading flank upper end of mounting panel, the output of PLC controller is connected to the input electricity of display screen and bee calling organ, conveniently gives people and sends out the warning and remind.

Further, still wrap round pin key and pressure sensor, round pin key fixed connection is in the cambered surface outer end of installation axle, pressure sensor fixed connection is in the middle part of round pin key, pressure sensor's probe is located the outside of round pin key, PLC controller's input is connected to pressure sensor's output electricity, plays the effect of secondary protection.

Further, still include fixed dog, fixed dog and the left end threaded connection of installation axle prevent that the drum from rotating the in-process and droing.

Compared with the prior art, the invention has the beneficial effects that: this automatic stop device of drum machine of mechanical type has following benefit:

1. rotatory T type screw rod, the relative rectangle frame in T type screw rod area is removed downwards, the lower extreme of T type screw rod promotes the support frame through the spacing ring and removes, the support frame reciprocates through the slider is inside sliding in the spout to drive the degree that compresses tightly of pinch roller removal adjustment to the cable, drive the carrier wheel rotation during the cable is carried, first photoelectric sensor gives the PLC controller through detecting the round pin post and with signal transmission, the PLC controller counts and calculates the length of cable according to the bearing of carrier wheel.

2. When equipment normally stops, the PLC controller controls the electric push rod to start, the electric push rod pushes the brake pad to move towards the left side, the inner arc surface of the brake pad and the outer arc surface of the brake disc are made to rub to stop, when emergency occurs, the PLC controller energizes the electromagnet, the electromagnet is magnetic after being energized, the metal block is adsorbed, the metal block drives the pawl to move downwards to enable the lower end of the pawl to be meshed with teeth of the ratchet wheel to stop emergently, operation is safe and reliable, and interlocking failure caused by too low stopping speed is prevented.

3. Drive buffer roller rebound when the cable is carried, buffer roller drives connecting rod and connecting axle and rotates, the connecting rod is tensile with first spring, when the cable fracture or excessively lax, first spring pulling connecting rod rebound, to PLC controller transmission signal when third photoelectric sensor detects the buffer roller, PLC controller receives to control buzzer after the signal that corresponds and starts to send the warning to people, send signal to the display screen simultaneously, make the display screen show unusual reason, when the cable pulling force is too big, the buffer roller is driven to second photoelectric sensor position by the cable, second photoelectric sensor sends signal to PLC controller after detecting the buffer roller, send signal to buzzer and display screen send signal simultaneously, send the warning to people, can detect the unusual of different situation, high durability and convenient use.

4. The pressure sensor detects the torque force of the wire coil in real time, and transmits a signal to the PLC controller, and the PLC controller controls whether the electromagnet is started or not by identifying the instantaneous pressure of the pressure sensor, stops according to the principle, plays a role in secondary protection, and further improves the use safety.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at the position A of the present invention;

FIG. 3 is an enlarged view of the structure of the present invention at B.

In the figure: the device comprises a mounting plate 1, a PLC 2, a display screen 3, a motor 4, a length measuring unit 5, a rotating shaft 51, a bearing wheel 52, a first photoelectric sensor 53, a pin 54, a pressing unit 6, a sliding chute 61, a sliding block 62, a supporting frame 63, a limiting ring 64, an upper pressing wheel 65, a 66T-shaped screw rod, an abnormality detecting unit 7, a buffer roller 71, a second photoelectric sensor 72, a third photoelectric sensor 73, a first spring 74, a connecting rod 75, an emergency stop unit 8, a pin 81, a pawl 82, a first fixing plate 83, a second spring 84, a second fixing plate 85, an electromagnet 86, a metal block 87, a ratchet 88, a third fixing plate 9, a buzzer 10, a mounting shaft 11, a pin 12, a fixed stop 13, a pressure sensor 14, a connecting shaft 15, a brake disc 16, a brake pad 17 electric push rod, a rectangular frame 18, a supporting plate 19 and a supporting plate 20.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a mechanical automatic stopping device of a wire coil machine comprises a mounting plate 1, a length measuring unit 5, a pressing unit 6, an abnormity detecting unit 7 and an emergency stopping unit 8;

mounting plate 1: the rear side surface of the mounting plate 1 is fixedly connected with a motor 4, an output shaft of the motor 4 penetrates through a through hole of the mounting plate 1, the front end of the output shaft of the motor 4 is fixedly connected with a mounting shaft 11, the rear end of an outer arc surface of the mounting shaft 11 is fixedly connected with a brake disc 15, the middle part of the front side surface of the mounting plate 1 is fixedly connected with a third fixing plate 9, the left side surface of the third fixing plate 9 is fixedly connected with an electric push rod 17, the left end of the electric push rod 17 is fixedly connected with a brake pad 16, the brake pad 16 is of an arc structure, an inner arc surface of the brake pad 16 is arranged corresponding to the outer arc surface of the brake disc, the rear end of the front side surface of the mounting plate 1 is fixedly connected with a supporting plate 19, the front end of the supporting plate 19 is fixedly connected with a rectangular, the inner arc surface of the brake pad 16 is in friction with the outer arc surface of the brake disc 15 to stop;

length measuring unit 5: the length measuring unit 5 comprises a rotating shaft 51, a bearing wheel 52, a first photoelectric sensor 53 and a pin 54, two ends of the rotating shaft 51 are respectively rotatably connected with the lower ends of the front side plate and the rear side plate inside the rectangular frame 18, the bearing wheel 52 is fixedly connected with the outer arc surface of the rotating shaft 51, the outer end of the arc surface of the bearing wheel 52 is of a concave structure, the first photoelectric sensor 53 is fixedly connected with the front side surface inside the rectangular frame 18, the pin 54 is fixedly connected with the front side surface of the bearing wheel 52, the first photoelectric sensor 53 and the pin 54 are correspondingly arranged, the output end of the first photoelectric sensor 53 is electrically connected with the input end of the PLC controller 2, the bearing wheel 52 is driven to rotate when a cable is conveyed, the first photoelectric sensor 53 detects the pin 54 and transmits a signal to the PLC controller 2, and the PLC controller 2 counts and calculates the length of the cable according to the bearing of the;

the pressing unit 6: the pressing unit 6 comprises a sliding groove 61, a sliding block 62, a supporting frame 63, a limiting ring 64, an upper pressing wheel 65 and a T-shaped screw 66, the sliding groove 61 is symmetrically arranged at the upper end inside the rectangular frame 18, the T-shaped screw 66 is in threaded connection with the middle part of the top plate of the rectangular frame 18, the supporting frame 63 is of an inverted U-shaped structure, the lower end of the T-shaped screw 66 penetrates through a circular hole of the top plate of the supporting frame 63, the limiting ring 64 is provided with two limiting rings 64 which are respectively arranged above and below the supporting frame 63, the sliding block 62 is provided with two sliding rings which are symmetrically arranged at the front end and the rear end of the supporting frame 63, the sliding block 62 is in sliding connection with the corresponding sliding groove 61, the upper pressing wheel 65 is rotationally connected with the lower end of a side plate of the supporting frame 63 through a connecting shaft, the upper pressing wheel 65 is arranged corresponding to the bearing wheel 52, a cable penetrates through the upper end, the T-shaped screw 66 is rotated, the T-shaped screw 66 moves downwards relative to the rectangular frame 18, the lower end of the T-shaped screw 66 pushes the support frame 63 to move through the limiting ring 64, and the support frame 63 slides and moves up and down in the sliding groove 61 through the sliding block 62, so that the pinch roller 65 is driven to move to adjust the compression degree of the cable;

abnormality detection unit 7: the abnormality detection unit 7 comprises a buffer roller 71, a second photoelectric sensor 72, a third photoelectric sensor 73, a first spring 74 and a connecting rod 75, the upper end of the connecting rod 75 is fixedly connected with the front end of the connecting shaft 20, the rear end of the buffer roller 71 is fixedly connected with the lower end of the connecting rod 75, one end of the first spring 74 is fixedly connected with the right side surface of the connecting rod 75, the other end of the first spring 74 is fixedly connected with the front side surface of the mounting plate 1 through the connecting plate, the second photoelectric sensor 72 is fixedly connected with the middle part of the front side surface of the mounting plate 1, the third photoelectric sensor 73 is fixedly connected with the lower end of the front side surface of the mounting plate 1, the second photoelectric sensor 72 and the third photoelectric sensor 73 are both arranged corresponding to the buffer roller 71, the output ends of the second photoelectric sensor 72 and the third photoelectric sensor 73 are both electrically connected with the input end of the PLC controller 2, when the cable is broken or excessively loosened, the first spring 74 pulls the, when the third photoelectric sensor 73 detects the buffer roller 71, a signal is transmitted to the PLC controller 2, when the cable tension is too large, the buffer roller 71 is driven to the position of the second photoelectric sensor 72 by the cable, and the second photoelectric sensor 72 sends the signal to the PLC controller 2 after detecting the buffer roller 71;

emergency stop unit 8: the emergency stop unit 8 comprises a pin shaft 81, a pawl 82, a first fixing plate 83, a second spring 84, a second fixing plate 85, an electromagnet 86, a metal block 87 and a ratchet wheel 88, wherein the pin shaft 81 is fixedly connected to the upper end of the front side surface of the mounting plate 1, the pawl 82 is rotatably connected with the outer arc surface of the pin shaft 81, the first fixing plate 83 and the second fixing plate 85 are both fixedly connected with the front side surface of the mounting plate 1, the first fixing plate 83 is positioned above the right side of the pawl 82, the second fixing plate 85 is positioned below the left side of the pawl 82, the lower end of the second spring 84 is fixedly connected with the upper surface of the pawl 82, the upper end of the second spring 84 is fixedly connected with the first fixing plate 83, the electromagnet 86 is fixedly connected with the upper surface of the second fixing plate 85, the metal block 87 is fixedly connected with the lower surface of the pawl 82, the metal block 87 is arranged corresponding, the PLC 2 energizes the electromagnet 86, the electromagnet 86 is magnetic after being energized and adsorbs the metal block 87, and the metal block 87 drives the pawl 82 to move downwards so that the lower end of the pawl 82 is meshed with teeth of the ratchet 88 to stop emergently;

wherein: still include display screen 3, bee calling organ 10, round pin key 12, pressure sensor 14 and decide dog 13, the equal fixed connection in the leading flank upper end of mounting panel 1 of display screen 3 and bee calling organ 10, PLC controller 2's output is connected to display screen 3 and bee calling organ 10's input electricity, round pin key 12 fixed connection is in the cambered surface outer end of installation axle 11, 14 fixed connection of pressure sensor in the middle part of round pin key 12, pressure sensor 14's probe is located the outside of round pin key 12, PLC controller 2's input is connected to pressure sensor 14's output electricity, fixed dog 13 and the left end threaded connection of installation axle 11, bee calling organ 10 is used for sending the warning to people, display screen 3 is convenient for show the reason of stopping to people.

Wherein: still include PLC controller 2, 2 fixed connection of PLC controller are in the leading flank upper end of mounting panel 1, and external power source is connected to the input electricity of mounting panel 1, and motor 4 and electric putter 17's input is connected to the output of PLC controller 2 electricity respectively.

When in use: the wire coil is arranged at the outer end of the mounting shaft 11, the pin key 12 corresponds to a key groove of a cylinder in the middle of the wire coil, the fixed stop 13 is locked, a cable passes through the upper end of the bearing wheel 52 and is fixed with the wire coil through the lower end of the cambered surface of the buffer roller 71, the T-shaped screw 66 is rotated, the T-shaped screw 66 moves downwards relative to the rectangular frame 18, the lower end of the T-shaped screw 66 pushes the support frame 63 to move through the limit ring 64, the support frame 63 slides and moves up and down in the sliding groove 61 through the sliding block 62, so that the pressing wheel 65 is driven to move and adjust the compression degree of the cable, the motor 4 is controlled to be started through the PLC controller 2, the mounting shaft 11 is driven to rotate by the output shaft of the motor 4, the mounting shaft 11 drives the wire coil to rotate through the pin key 12 to take up the wire, meanwhile, the brake disc 15 and the ratchet, the PLC controller 2 counts and calculates the length of the cable according to the bearing of the bearing wheel 52, the buffer roller 71 is driven to move upwards when the cable is conveyed, the buffer roller 71 drives the connecting rod 75 and the connecting shaft 20 to rotate, the first spring 74 is stretched by the connecting rod 75, when the equipment is normally stopped, the PLC controller 2 controls the electric push rod 17 to start, the electric push rod 17 pushes the brake pad 16 to move towards the left side, the inner arc surface of the brake pad 16 and the outer arc surface of the brake disc 15 are rubbed to stop, when the cable is broken or excessively loosened, the first spring 74 pulls the connecting rod 75 to move downwards, when the third photoelectric sensor 73 detects the buffer roller 71, a signal is transmitted to the PLC controller 2, the PLC controller 2 receives the corresponding signal and then controls the buzzer 10 to start to give a warning to people, and simultaneously sends a signal to the display screen 3 to display the abnormal reason of the display screen 3, when the tensile cable is excessively large, the buffer roller 71 is driven to the position of the second photoelectric sensor 72 by a cable, the second photoelectric sensor 72 sends a signal to the PLC controller 2 after detecting the buffer roller 71, the PLC controller 2 energizes the electromagnet 86 and controls the motor 4 to stop, the electromagnet 86 is magnetic after being energized and adsorbs the metal block 87, the metal block 87 drives the pawl 82 to move downwards so that the lower end of the pawl 82 is meshed with teeth of the ratchet wheel 88 to stop emergently, and simultaneously sends a signal to the buzzer 10 and the display screen 3 to send a signal to remind people, the pressure sensor 14 detects the torque force of the wire coil in real time and sends a signal to the PLC controller 2, the PLC controller 2 controls the electromagnet 86 to start when recognizing that the instantaneous pressure of the pressure sensor 14 is too large or too small, and stops according to the principle to play a role of secondary protection.

It should be noted that the specific model of the PLC controller 2 disclosed in this embodiment is siemens S7-200, the display screen 3, the motor 4, the first photoelectric sensor 53, the second photoelectric sensor 72, the third photoelectric sensor 73, the electromagnet 86, the buzzer 10, and the pressure sensor 14 may be freely configured according to the actual application scenario, the motor 4 is proposed to be a vertical gear reduction motor manufactured by shanghai zhibao motor manufacturing company, the first photoelectric sensor 53, the second photoelectric sensor 72, and the third photoelectric sensor 73 are proposed to be a J12 series ultra-short proximity switch manufactured by Nanjing Kaityt electric company, the PLC controller 2 controls the display screen 3, the motor 4, the first photoelectric sensor 53, the second photoelectric sensor 72, the third photoelectric sensor 73, the electromagnet 86, the buzzer 10 and the pressure sensor 14 to work by adopting a method commonly used in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.