CN109787438B - Clamping plate type anti-collision device and anti-collision method used during maintenance of exciter - Google Patents

Abstract

The invention relates to a clamping plate type anti-collision device and an anti-collision method used during maintenance of an exciter, wherein the anti-collision device comprises a first mounting box, a second mounting box, a driving unit, a first touch unit, a second touch unit, a linkage mechanism and a control unit; the linkage mechanism comprises a first connecting rod assembly, a connecting plate and a second connecting rod assembly; one end of the first connecting rod assembly is installed in the first installation box and is arranged opposite to the first touch unit and the driving unit, and the other end of the first connecting rod assembly is connected with the connecting plate; one end of the second connecting rod assembly is arranged in the second mounting box and is opposite to the second touch unit, and the other end of the second connecting rod assembly is connected with the connecting plate; the connecting plate is arranged in the air gap; the control unit is respectively connected with the first touch control unit and the second touch control unit. The clamping plate type anti-collision device can improve the safety and anti-collision reliability of the drawn stator, and can avoid equipment damage.

Description

Clamping plate type anti-collision device and anti-collision method used during maintenance of exciter

Technical Field

The invention relates to the technical field of nuclear power, in particular to a clamping plate type anti-collision device and an anti-collision method used during maintenance of an exciter.

Background

And in the nuclear power station overhaul, the exciter stator needs to be pumped for overhaul. The exciter stator is of a barreled structure and is arranged inside the armature, and the armature is also of a barreled structure. The air gap between the stator and the armature is only 2-3mm, the total length of the stator is about 1m, in the process of drawing and passing, personnel are required to observe the air gap through the measuring hole, if the air gap is too small, the personnel can call and stop at once, the trolley is adjusted, and the collision between the outer circle of the stator and the inner circle of the armature is avoided. If the collision between the armature and the stator is not discovered in time and the trolley is pulled continuously, both the armature and the stator can be seriously damaged.

The difficulty is that 4 people are required to visually observe the gap in four directions, namely up, down, left and right. Over a length of 1 meter, the lighting is poor and it is difficult to observe whether a 2-3mm air gap changes to a dangerous level (e.g. 1mm) and whether a collision has occurred. In particular, the outer surface of the stator is not regularly rounded and has a certain low waviness.

Disclosure of Invention

The invention aims to provide a clamping plate type anti-collision device capable of preventing an armature from colliding with a custom and an anti-collision method for overhauling an exciter.

The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a clamping plate type anti-collision device, wherein the clamping plate type anti-collision device is used for drawing a stator from an armature in the process of maintenance of an exciter, and a gap is reserved between the outer side wall of the stator and the inner side wall of the armature to form an air gap; the air gap is opposite to an observation hole arranged on the end face of the stator far away from the armature;

the anti-collision device comprises a first mounting box, a second mounting box, a driving unit, a first touch unit, a second touch unit, a linkage mechanism and a control unit; the first mounting box and the second mounting box are respectively arranged at two ends of the air gap; the first mounting box is arranged on the outer side of the stator, and the first touch unit and the driving unit are both mounted in the first mounting box and sequentially arranged along the radial direction of the stator; the second mounting box is mounted on the inner side of the stator, and the second touch control unit is mounted in the second mounting box;

the linkage mechanism comprises a first connecting rod assembly, a connecting plate and a second connecting rod assembly; one end of the first connecting rod assembly is installed in the first installation box and is arranged opposite to the first touch unit and the driving unit, and the other end of the first connecting rod assembly is connected with the connecting plate; one end of the second connecting rod assembly is installed in the second installation box and is arranged opposite to the second touch unit, and the other end of the second connecting rod assembly is connected with the connecting plate; the connecting plate is arranged in the air gap;

the control unit is respectively connected with the first touch unit and the second touch unit; when the distance between the outer side wall of the stator and the inner side wall of the armature reaches a set distance, the linkage mechanism is driven by the driving unit to simultaneously touch the first touch unit and the second touch unit, and the control unit is used for simultaneously receiving touch signals sent by the first touch unit and the second touch unit; when the connecting plate is clamped between the stator and the armature, the linkage mechanism firstly triggers the first touch unit and then triggers the second touch unit or only triggers the first touch unit under the driving of the driving unit, and the control unit generates an alarm instruction when receiving asynchronous signals of the first touch unit and the second touch unit.

Preferably, the first link assembly comprises a first link arranged in the first mounting box, and a first elastic piece, one end of the first elastic piece is abutted with the inner side wall of the first mounting box, and the other end of the first elastic piece is abutted with the first link;

one end of the first connecting rod is arranged on the inner side wall of the first mounting box provided with the first elastic piece, and the other end of the first connecting rod is movably connected with the connecting plate;

the driving unit and the first touch control unit are arranged on the inner side wall of the first mounting box, wherein the first connecting rod is arranged on the inner side wall of the first mounting box.

Preferably, the second connecting rod assembly comprises a second connecting rod and a second elastic piece, wherein one end of the second connecting rod extends into the second mounting box, the other end of the second connecting rod extends towards the air gap and is connected with the connecting plate, one end of the second elastic piece is abutted to the inner side wall of the second mounting box, and the other end of the second elastic piece is abutted to the second connecting rod.

Preferably, the second connecting rod is provided with a shaft hole, and the side wall of the second mounting box is provided with a rotating shaft connected with the shaft hole.

Preferably, the first link comprises a magnetically permeable link; the driving unit comprises an electromagnetic driving element which can be attracted with the first connecting rod to drive the first connecting rod to touch the first touch unit in a power-on state;

the distance from the electromagnetic driving element to the first connecting rod is larger than the distance from the first touch unit to the first connecting rod.

Preferably, the thickness of the connecting plate is smaller than a set distance between the outer stator side wall and the inner armature side wall.

Preferably, a fixing component is arranged between the second mounting box and the stator;

the fixed component comprises a magnetic suction component which sucks the second mounting box on the stator.

Preferably, the first touch unit comprises a first microswitch, and a top rod of the first microswitch is arranged opposite to the first connecting rod assembly;

and/or the second touch unit comprises a second micro switch, and a top rod of the second micro switch is opposite to the second connecting rod assembly.

Preferably, the clamping plate type anti-collision device further comprises an alarm;

the alarm is connected with the control unit, and receives the alarm instruction and sends an alarm signal when the control unit receives the signals of the first touch unit and the second touch unit are asynchronous or only receives the signal of the first touch unit.

Preferably, the clamping plate type anti-collision device further comprises an adjusting assembly for adjusting the distance between the outer side wall of the stator and the inner side wall of the armature.

The invention also constructs an anti-collision method used in maintenance of the exciter, and the clamping plate type anti-collision device is adopted; the method comprises the following steps:

s1, starting a driving unit to drive the linkage mechanism to be linked;

s2, receiving touch information of the first touch unit and the second touch unit and judging whether the first touch unit and the second touch unit are touched simultaneously;

s3, if yes, repeating the steps S1-S2;

and if not, generating an alarm command, and adjusting the distance between the outer side wall of the stator and the armature to a set distance.

Preferably, when the first touch unit and the second touch unit are simultaneously touched, before repeating the steps S1-S2, the method further includes turning off the driving unit, receiving reset information of the first touch unit and the second touch unit, and determining whether the first touch unit and the second touch unit are simultaneously reset;

if yes, repeating the steps S1-S2;

and if not, generating an alarm command, and adjusting the distance between the outer side wall of the stator and the armature to a set distance.

The clamping plate type anti-collision device and the anti-collision method used in maintenance of the exciter have the following beneficial effects: the clamping plate type anti-collision device is provided with a first mounting box, a second mounting box, a driving unit, a first touch unit, a second touch unit, a linkage mechanism and a control unit; when the distance between the outer side wall of the stator and the inner side wall of the armature reaches a set distance, the linkage mechanism can simultaneously touch the first touch unit and the second touch unit under the driving of the driving unit, and the control unit can simultaneously receive touch signals sent by the first touch unit and the second touch unit; when the connecting plate is clamped between the stator and the armature, the linkage mechanism is driven by the driving unit to firstly trigger the first touch unit and then trigger the second touch unit or only trigger the first touch unit, so that the control unit can produce an alarm instruction when receiving signals of the first touch unit and the second touch unit are asynchronous, an operator can be prompted to adjust the distance between the stator and the armature in time, collision between the stator and the armature is prevented, and equipment damage is avoided. The clamping plate type anti-collision device can save manpower, specifically can reduce the manpower for observing the gap by 4 times, can improve the safety of extracting the stator, has anti-collision reliability, and can clamp the connecting plate when sending an alarm command, thereby avoiding equipment damage.

The anti-collision method for overhauling the exciter can adopt the clamping plate type anti-collision device, and has the advantages of simple and convenient operation, low cost and high safety performance.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of the installation of the panel-clamping type impact prevention device of the present invention;

FIG. 2 is a side view of the pinch plate guard of the present invention shown in FIG. 1;

FIG. 3 is a schematic view of the structure of the splint type impact preventer of the present invention;

fig. 4 is a logic diagram of the anti-collision method for exciter maintenance according to the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 to 3 show a preferred embodiment of the jaw type collision preventing apparatus according to the present invention. The clamping plate type anti-collision device can be used for overhauling the exciter 100. The exciter 100 includes an armature 101 and a stator 102; the magnetic force generating device can prevent the armature 101 from colliding with the stator 102 when the exciter 100 is pulled through the stator 102 from the armature 101 during maintenance, and a gap is reserved between the outer side wall of the stator 102 and the inner side wall of the armature 101 to form an air gap 103; the air gap 103 is disposed opposite to a viewing hole 1021 provided on an end face of the stator 102 remote from the armature 101. Through adopting this splint formula anti-collision device, need not that operating personnel observes this observation hole in real time, it can practice thrift the human cost to it can reliably detect the collision and is convenient for remind operating personnel to adjust the distance in advance through real-time warning, thereby can improve this security of drawing through stator 102, avoids equipment to damage.

As shown in fig. 1 to 3, the clamping plate type anti-collision device includes a first mounting box 210, a second mounting box 220, a driving unit 230, a first touch unit 240, a second touch unit 250, a linkage mechanism 260 and a control unit; the first mounting box 210 and the second mounting box 220 are respectively disposed at both ends of the air gap 103; the first mounting box 210 is disposed outside the stator and can be used for mounting the driving unit 230 and the first touch unit 240; the second mounting box 220 is mounted inside the stator 102, and can be used for mounting the second touch unit 250; the first touch unit 240 and the driving unit 230 are both installed in the first installation box 210 and sequentially arranged along the radial direction of the stator 102; the driving unit 230 can be used for driving the linkage mechanism 260 to touch the first touch unit 240; the first touch unit 240 and the second touch unit 250 can be linked by the linking mechanism 260. The control unit is connected to the first touch unit 240 and the second touch unit 250, respectively, and can receive touch signals of the first touch unit 240 and the second touch unit 250.

Further, in the present embodiment, the first mounting box 210 may be disposed on a side of the stator 102 where the observation hole 1021 is disposed, and may be detachably connected to the stator 102, and it is understood that in other embodiments, the first mounting box 210 is not limited to be disposed on the stator 102, and the first mounting box 210 is not limited to be detachably connected to the stator 102.

Further, in the present embodiment, the second mounting box 220 may be disposed on the stator 102, which may be detachably connected with the stator 102. In the present embodiment, the second mounting box 220 is disposed inside a sidewall of the stator 102 disposed opposite to an inner sidewall of the armature 101, and may be coupled to the stator 102 by disposing a fixing member 270. In the present embodiment, the fixing member 270 is disposed on a sidewall of the second mounting box 220 contacting the stator 102, which can fix the second mounting box 220 on the stator 102. The fixing member may include a magnetic member, which may be detachably coupled by attracting the second mounting box 220 to an inner sidewall of the stator 102. Specifically, in this embodiment, the magnetic component includes a magnetic base disposed inside the second mounting box 220 and a magnetic member disposed in the magnetic base, and the magnetic member can be a magnet. Of course, it is to be understood that in other embodiments, the securing assembly is not limited to a magnetically attractive assembly.

Further, in this embodiment, the driving unit 230 is disposed on an inner sidewall of the first mounting box 210 where the linking mechanism 260 is disposed, specifically, it is disposed on an inner side of a sidewall where the stator 102 is disposed adjacent to the observation hole 1021, and it is disposed protruding toward the accommodating cavity of the first mounting box 210, and it can be used to drive the linking mechanism 260 to rotate. In this embodiment, the electromagnetic driving element may be an electromagnet. Of course, it is understood that in other embodiments, the driving unit 230 is not limited to an electromagnetic driving element, which is not limited to an electromagnet.

Further, in this embodiment, the first touch unit 240 is disposed on an inner sidewall of the first mounting case 210 where the linkage mechanism 260 is disposed, specifically, it is disposed on an inner side of a sidewall where the stator 102 is disposed adjacent to the observation hole 1021, the first touch unit 240 can be a first micro switch, a top rod of the first micro switch is disposed opposite to the linkage mechanism 260, and it can be triggered by the linkage mechanism 260 when the linkage mechanism 260 is driven by the driving unit 230, so as to implement opening or closing. It is understood that in other embodiments, the first touch unit 240 is not limited to a micro switch.

Further, in this embodiment, the second touch unit 250 is disposed on the inner sidewall of the second mounting box 220 where the linkage mechanism 260 is disposed, the second touch unit 250 may be a second micro switch, and a top rod of the second micro switch is disposed opposite to the linkage mechanism 260 and can be triggered by the linkage mechanism 260, so as to be turned on or turned off. It is understood that in other embodiments, the second touch unit 250 is not limited to a micro switch.

Further, in this embodiment, the linkage mechanism 260 includes a first link assembly 261, a connecting plate 263 and a second link assembly 262; one end of the first link assembly 261 is mounted in the first mounting box 210, and is disposed opposite to the first touch unit 240 and the driving unit 230, and can touch the first touch unit 240 under the driving of the driving unit 230. The other end of the first link assembly 261 is connected to the connecting plate 263, which can drive the connecting plate 263 to move. One end of the second connecting rod assembly 262 is mounted in the second mounting box 220, and is disposed opposite to the second touch unit 250, and the other end thereof is connected to the connecting plate 263, and the connecting plate 263 is disposed in the air gap 103. When the first link assembly 261 is driven by the driving unit 230, it can drive the connecting plate 263 to move toward the observation hole, and further drive the second link assembly 262 to trigger the second touch unit.

Specifically, the first link assembly 261 includes a first link 2611, a first elastic member 2612; the first link 2611 is disposed in the first mounting box 210, and the first link 2611 is disposed in the first mounting box 210 and rotatably connected to an inner sidewall of the first mounting box 210. One end of the first elastic member 2612 abuts against the inner sidewall of the first mounting box 210, and the other end abuts against the first link 2611. One end of the first link 2611 is disposed on the inner sidewall of the first mounting box 210 where the first elastic member 2612 is disposed, and the other end is movably connected to the connecting plate 263; in this embodiment, the driving unit 230 and the first touch unit 240 are disposed on an inner sidewall of the first mounting box 210 having the first link 2611, and the driving unit 230 and the first touch unit 240 are sequentially disposed in parallel along a radial direction.

Specifically, in this embodiment, the first link 2611 and the top rod of the first micro switch are disposed opposite to each other, and may be a magnetic conductive link, which is capable of attracting the electromagnetic driving element, and a distance from the electromagnetic driving element to the first link 2611 is greater than a distance from the second touch unit 240 to the first link 2611. The electromagnetic driving element is attracted to the first link 2611 in a power-on state, so as to drive the first link 2611 to move towards a direction close to the first touch unit 240, and further to trigger the first touch unit 240. It is to be appreciated that in other embodiments, the first link 2611 is not limited to a magnetically permeable link.

Specifically, in the embodiment, the first elastic member 2612 is disposed on the inner sidewall of the first mounting box 210 where the first link 2611 is disposed, and in the embodiment, the first elastic member 2612 may be a spring, one end of which abuts against the inner sidewall of the first mounting box 210, and the other end of which abuts against the first link 2611. It is understood that, in other embodiments, the first elastic member 2612 may not be limited to a spring.

Further, in the present embodiment, the second connecting rod assembly 262 includes a second connecting rod 2621 and a second elastic member 2622. One end of the second connecting rod 2621 extends into the second mounting box 220 and the other end extends toward the air gap 103 to connect with the connecting plate 263. When the connecting plate 263 moves toward the observation hole 1021, the second link 262 can be driven by the connecting plate 263 to trigger the second touch unit 250. In this embodiment, the second connecting rod 2621 is provided with a shaft hole, and the side wall of the second mounting box 220 is provided with a rotating shaft 2623; the shaft 2623 can pass through the shaft hole and be connected with the shaft hole. The second connecting rod 2621 can rotate through the shaft hole and the rotating shaft 2623. This second elastic component one end and this second mounting box 220 inside wall butt, the other end and this second connecting rod 2621 butt, it can be convenient for this second connecting rod 2621 to reset, in this embodiment, this second elastic component 2622 can be the spring, and the one end of this spring is connected with the inside wall of this mounting box 220, and the other end is connected with this second connecting rod 2621. It is understood that in other embodiments, the second elastic member 2622 is not limited to a spring.

Further, in the present embodiment, the thickness of the connection plate 263 is smaller than the set distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101. Specifically, in the present embodiment, the thickness of the connecting plate 263 is 1mm, and the width thereof is also 1 mm; the connecting plate 263 can be sandwiched between the stator 102 and the armature 101, which can prevent the stator 102 from colliding with the armature 101. In this embodiment, the connection plate 263 may be made of non-metallic insulating material, specifically, it may be an epoxy plate, whose length is longer than that of the stator, and it can reciprocate in the air gap at intervals of 0.5 seconds, and when one of the air gaps on the upper, lower, left, and right sides is smaller than 1mm, the connection plate 263 will be clamped by the stator 102 and the armature 101 and cannot move, so that the touch of the first touch unit 240 and the touch of the second touch unit 250 are asynchronous. In other embodiments, when the clamping point of the connecting plate 263 is close to the inner side, the first touch unit 240 is still activated and the second touch unit 250 cannot be activated due to the larger distance from the second mounting case 220.

Further, in this embodiment, the clamping plate type anti-collision device further includes an alarm, the alarm is connected to the control unit, can be controlled by the control unit, and can receive the alarm command and send an alarm signal when the control unit receives signals of the first touch unit and the second touch unit from different times or only receives the signal of the first touch unit. In this embodiment, the alarm signal may be an alarm tone. Of course, it will be appreciated that in other embodiments, the alarm may be omitted and the photoelectric anti-collision device may include other alarm devices such as a warning light.

Further, in this embodiment, the clamping plate type anti-collision device further comprises an adjusting assembly; the adjustment assembly can be used to adjust the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 to maintain the air gap size within a set range. Specifically, in the present embodiment, the adjusting component can be a cart connected to the stator 102 to move the stator 102. Of course, it will be appreciated that in other embodiments, the adjustment assembly is not limited to a trolley.

Fig. 4 shows a preferred embodiment of the anti-collision method for exciter maintenance according to the present invention. The anti-collision method for overhauling the exciter adopts the clamping plate type anti-collision device, and has the advantages of simple and convenient operation, low cost and high safety performance.

The anti-collision method for the maintenance of the exciter comprises the following steps:

s1, the driving unit 230 is turned on to drive the interlocking mechanism 260 to interlock.

Specifically, first, the clip type anti-collision device is mounted on the exciter 100, the first mounting case 210 is mounted on the observation hole 1021 by screws, the second mounting case 220 is mounted on the inner side of the stator 102, and the connection plate 263 is passed through an air gap and is connected to the first connection rod 2611 through the observation hole 1021 of the stator 102. Then, the electromagnetic driving element is energized for 0.5s, and the first link 2611 is attracted by the electromagnetic driving element, so as to move toward the first touch unit 240, thereby touching the first touch unit 240.

S2, receiving the touch information of the first touch unit 240 and the second touch unit 250, and determining whether the first touch unit 240 and the second touch unit 250 are touched simultaneously.

Specifically, the control unit is connected to the first touch unit 240 and the second touch unit 250 to receive touch information of the first touch unit 240 and the second touch unit 250. If the first touch unit 240 and the second touch unit 250 are touched simultaneously and the control unit receives the touch information synchronization of the first touch unit 240 and the second touch unit 250, it can be determined that the connecting plate 263 cannot be clamped and the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 is a set distance, so there is no risk of collision. If the first touch unit 240 and the second touch unit 250 cannot be touched simultaneously, the control unit receives asynchronous touch information of the first touch unit 240 and the second touch unit 250, or receives only touch information of the first touch unit 240, it can be determined that the connecting plate 263 is clamped, and the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 is smaller than a set distance, so that there is a risk of collision.

S3, if yes, repeating the steps S1-S2;

if not, an alarm command is generated, and the distance between the outer side wall of the stator 102 and the armature 101 is adjusted to a set distance.

Specifically, when the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 reaches a set distance, the linkage mechanism 260 is driven by the driving unit 230 to simultaneously touch the first touch unit 240 and the second touch unit 250, that is, the first connecting rod 2611 touches the first touch unit 240 and simultaneously drives the connecting plate 263 to move toward the observation hole 1021, so as to drive the second connecting rod 2621 to rotate and move toward the second touch unit 250 to touch the second touch unit 250, so that the control unit can simultaneously receive the touch signals sent by the first touch unit 240 and the second touch unit 250, determine that there is no risk of collision, and continue to repeat steps S1-S2.

When the distance between the outer sidewall of the stator 102 and the armature 101 is smaller than a set distance, and the connecting plate 263 is clamped between the stator 102 and the armature 101, the linkage mechanism 260 first triggers the first touch unit 240 and then triggers the second touch unit 250 or only triggers the first touch unit 240 under the driving of the driving unit 230, the control unit receives that the signals of the first touch unit 240 and the second touch unit 250 are asynchronous, the control unit generates an alarm command, the alarm command is transmitted to an alarm device, the alarm device sends an alarm signal to prompt an operator to adjust the distance, and when the distance between the outer sidewall of the stator 102 and the armature 101 reaches the set distance, the control unit controls the alarm device to stop sending the alarm signal.

In this embodiment, before repeating steps S1-S2, the method further includes turning off the driving unit 230, receiving the reset information of the first touch unit 240 and the second touch unit 250, and determining whether the first touch unit and the second touch unit are simultaneously reset. If yes, repeating the steps S1-S2; if not, generating an alarm command, and adjusting the distance between the outer side wall of the stator 102 and the inner side wall of the armature 101 to a set distance.

Specifically, the electromagnetic driving element is turned off for 0.5S, the first link 2611 is driven by the first elastic member 2612 to move in a direction away from the first touch unit 240, the top rod of the first touch unit 240 is reset, when the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 reaches a set distance, the connection plate 263 is driven by the first link 2611 to move in a direction away from the observation hole 1021, so as to drive the second link 2621 to move in a direction away from the second touch unit 250, and the second touch unit 250 is reset, so that it is determined that there is no collision risk, and the steps S1 to S2 are continuously repeated; when the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 is smaller than a set distance, and the connecting plate 263 is clamped between the stator 102 and the armature 101, the connecting plate 263 cannot be driven by the first connecting rod 2611, so that the second connecting rod 2621 cannot move in a direction away from the second touch unit 250, the second touch unit 250 cannot be reset, it is determined that there is a collision risk, the control unit generates an alarm command, the alarm command is transmitted to an alarm device, the alarm device sends an alarm signal to prompt an operator to adjust the distance, and when the distance between the outer sidewall of the stator 102 and the inner sidewall of the armature 101 reaches the set distance, the control unit controls the alarm device to stop sending the alarm signal.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims (12)

1. A clamping plate type anti-collision device is used for drawing a stator (102) from an armature (101) in the process of maintenance of an exciter (100), and a gap is reserved between the outer side wall of the stator (102) and the inner side wall of the armature (101) to form an air gap (103); the air gap (103) is arranged opposite to an observation hole (1021) arranged on one end face of the stator (102) far away from the armature (101); it is characterized in that the preparation method is characterized in that,

the anti-collision device comprises a first mounting box (210), a second mounting box (220), a driving unit (230), a first touch unit (240), a second touch unit (250), a linkage mechanism (260) and a control unit; the first mounting box (210) and the second mounting box (220) are respectively arranged at two ends of the air gap (103); the first mounting box (210) is arranged on the outer side of the stator (102), and the first touch control unit (240) and the driving unit (230) are mounted in the first mounting box (210) and are sequentially arranged along the radial direction of the stator (102); the second mounting box (220) is mounted on the inner side of the stator (102), and the second touch control unit (250) is mounted in the second mounting box (220);

the linkage mechanism (260) comprises a first connecting rod assembly (261), a connecting plate (263) and a second connecting rod assembly (262); one end of the first connecting rod component (261) is installed in the first installation box (210) and is arranged opposite to the first touch control unit (240) and the driving unit (230), and the other end of the first connecting rod component is connected with the connecting plate (263); one end of the second connecting rod assembly (262) is installed in the second installation box (220) and is arranged opposite to the second touch unit (250), and the other end of the second connecting rod assembly is connected with the connecting plate (263); the connection plate (263) is arranged in the air gap (103);

the control unit is respectively connected with the first touch control unit (240) and the second touch control unit (250); when the distance between the outer side wall of the stator (102) and the inner side wall of the armature (101) reaches a set distance, the linkage mechanism (260) is driven by the driving unit (230) to simultaneously touch the first touch unit (240) and the second touch unit (250), and the control unit simultaneously receives touch signals sent by the first touch unit (240) and the second touch unit (250); when the connecting plate (263) is clamped between the stator (102) and the armature (101), the linkage mechanism (260) first triggers the first touch unit (240) and then triggers the second touch unit (250) or only triggers the first touch unit (240) under the driving of the driving unit (230), and the control unit generates an alarm instruction when the signals of the first touch unit (240) and the second touch unit (250) are asynchronous.

2. The clamping plate type anti-collision device according to claim 1, wherein the first link assembly (261) comprises a first link (2611) arranged in the first mounting box (210), and a first elastic member (2612) having one end abutting against the inner side wall of the first mounting box (210) and the other end abutting against the first link (2611);

one end of the first connecting rod (2611) is arranged on the inner side wall of the first mounting box (210) provided with the first elastic piece (2612), and the other end of the first connecting rod is movably connected with the connecting plate (263);

the driving unit (230) and the first touch unit (240) are disposed on an inner side wall of the first mounting box (210) on which the first connecting rod (2611) is disposed.

3. The clamping plate type anti-collision device according to claim 1, wherein the second connecting rod assembly (262) comprises a second connecting rod (2621) with one end extending into the second mounting box (220) and the other end extending towards the air gap (103) and connected with the connecting plate (263), and a second elastic member (2622) with one end abutting against the inner side wall of the second mounting box (220) and the other end abutting against the second connecting rod (2621).

4. The clamping plate type anti-collision device according to claim 3, wherein a shaft hole is formed in the second connecting rod (2621), and a rotating shaft (2623) connected with the shaft hole is formed in a side wall of the second mounting box (220).

5. The pinch-plate guard according to claim 2, wherein the first link (2611) comprises a magnetically permeable link; the driving unit (230) comprises an electromagnetic driving element which can be attracted with the first connecting rod (2611) to drive the first connecting rod (2611) to touch the first touch unit (240) in a power-on state;

the distance from the electromagnetic driving element to the first connecting rod (2611) is larger than the distance from the first touch control unit (240) to the first connecting rod (2611).

6. The sandwich plate type collision prevention device according to claim 1, wherein the thickness of the connection plate (263) is smaller than a set distance between an outer side wall of the stator (102) and an inner side wall of the armature (101).

7. The sandwich plate type anti-collision device according to claim 1, wherein a fixing component (270) is arranged between the second mounting box (220) and the stator (102);

the fixing component (270) comprises a magnetic attraction component attracting the second mounting box (220) to the stator (102).

8. The clamping plate type anti-collision device according to claim 1, wherein the first touch unit (240) comprises a first micro switch, and a top rod of the first micro switch is arranged opposite to the first connecting rod assembly (261);

and/or the second touch control unit (250) comprises a second micro switch, and a top rod of the second micro switch is arranged opposite to the second connecting rod assembly (262).

9. The pinch plate bumper of claim 1, further comprising an alarm;

the alarm is connected with the control unit, and when the control unit receives the signals of the first touch unit (240) and the second touch unit (250) out of synchronization or receives the signal of the first touch unit (240), the alarm receives the alarm instruction and sends an alarm signal.

10. The pinch plate bumper according to claim 1, further comprising an adjustment assembly that adjusts a distance between an outer sidewall of the stator (102) and an inner sidewall of the armature (101).

11. An anti-collision method for maintenance of an exciter, which comprises the use of the clamping plate type anti-collision device according to any one of claims 1 to 10; the method is characterized by comprising the following steps:

s1, starting a driving unit to drive the linkage mechanism to be linked;

s2, receiving touch information of the first touch unit and the second touch unit and judging whether the first touch unit and the second touch unit are touched simultaneously;

s3, if yes, repeating the steps S1-S2;

and if not, generating an alarm command, and adjusting the distance between the outer side wall of the stator and the armature to a set distance.

12. The exciter overhaul method according to claim 11, wherein when the first touch unit and the second touch unit are simultaneously activated, before repeating the steps S1 to S2, the method further comprises turning off the driving unit, receiving reset information of the first touch unit and the second touch unit, and determining whether the first touch unit and the second touch unit are simultaneously reset;

if yes, repeating the steps S1-S2;

and if not, generating an alarm command, and adjusting the distance between the outer side wall of the stator and the armature to a set distance.

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