Emergency brake separating and tripping device
Technical Field
The invention belongs to the technical field of power equipment, relates to an emergency brake-separating tripping device, and particularly relates to an emergency brake-separating tripping device for a switch breaker.
Background
The high-voltage switch cabinet switching breaker usually adopts a remote operation mode, namely, the high-voltage switch cabinet switching breaker is remotely operated in a main control room through a microcomputer. However, when the breaker fails and cannot be opened by remote operation, operation and maintenance personnel have to operate the breaker in a short distance. During this operation, once the mechanical jamming phenomenon occurs in the circuit breaker, the personal safety of operators operating nearby may be compromised.
Therefore, a portable mechanical and electric brake-separating device of a high-voltage switch cabinet is designed, china patent is filed, the application number of the device is 201921739965.7, the bulletin number of the device is CN210429582U, the brake-separating device comprises a cross rod motor combination, a knob magnet base sleeve, a remote control receiver, a storage battery and a remote controller, and the unit combination is used for carrying out emergency brake-separating on a switch cabinet circuit breaker. The knob magnet base is sleeved with two sets of longitudinal fixing rods, the transverse rod motor combination adopts transverse fixing rods, and the longitudinal fixing rods and the transverse fixing rods are connected through steering connecting pieces in the transverse rod motor combination, so that the motor in the transverse rod motor combination can move forwards, backwards, leftwards and rightwards.
When the remote control type switch cabinet is used, the two knob magnets are adsorbed on the panel of the switch cabinet, the positions of the motors are adjusted along the transverse fixing rod and the longitudinal fixing rod, the tail end of the motor propulsion shaft is opposite to the breaker opening button and keeps a proper distance, then, the remote control is used for controlling the propulsion motor propulsion rod to advance or retreat outdoors so as to realize the operation of on-site opening of the breaker outdoors by field staff, and the safety is high.
However, when the position of the pushing rod of the pushing motor is adjusted to be opposite to the position of the opening button of the circuit breaker and keep a proper distance between the pushing rod and the opening button of the circuit breaker, the position is adjusted completely by visual inspection and part of sight is shielded by the pushing motor, so that the situation that the pushing rod can be quickly adjusted to a proper position and a proper distance under emergency is difficult to ensure, the situation that the opening cannot be effectively caused due to insufficient pushing distance of the pushing rod is easy to occur, or the situation that the whole opening device falls off from a panel of a switch cabinet and breaks due to overlarge pushing distance of the pushing rod is easy to occur.
In view of this situation, it is easy for those skilled in the art to think that a conventional technical means is to add a ranging structure to the opening device instead of manual visual inspection, and when the opening device is adsorbed on the counter surface of the switch cabinet, a specific value of the pushing distance can be detected and given by the ranging structure, thereby improving the accuracy in position adjustment. However, in the actual operation process, the operation difficulty of manually adjusting the distance between the outer end of the motor propulsion shaft and the brake separating button to enough precision is large under the influence of various factors such as flatness of a switch cabinet surface, manual installation and adjustment errors, ranging structure errors and the like.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides an emergency brake separating and tripping device, and solves the problem that the accuracy of a propelling distance is difficult to guarantee when the conventional brake separating device is installed.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides an urgent separating brake device of beating a jump, includes the casing and fixes the absorption magnet and driving motor on the casing, driving motor has the propulsion axle that can axial displacement and stretch out casing one side, a serial communication port, the outer end of propulsion axle is provided with the head of beating a jump, beat the head with be provided with the elastic component between the propulsion axle, the head of beating a jump can be to keeping away from the direction of propulsion axle under the elastic force effect of elastic component and remove, and when beating a jump can compress when receiving axial effort the elastic component with the propulsion axle moves in opposite directions.
When the emergency breaking and tripping device is used, an operator adsorbs the whole shell on a cabinet door of a switch cabinet through an adsorption magnet, the position of a tripping head is opposite to the position of a breaking button, a driving motor is started to drive a push shaft to axially extend, the tripping head is outwards ejected along with the push shaft under the action of the elasticity of an elastic piece, when the outer end of the tripping head moves to the breaking button, the breaking button is pressed under the action of the elasticity of the elastic piece to realize breaking, and when the push shaft is still outwards pushed after the breaking button is pressed, the tripping head is propped against the breaking button and is blocked by the breaking button to compress the elastic piece.
In the working process, the axial length of the whole pushing shaft for pressing the opening button is lengthened by arranging the jumping head at the outer end of the pushing shaft, so that the situation that the opening button cannot be pressed due to insufficient pushing distance of the pushing shaft is avoided, and meanwhile, when the axial pushing distance of the pushing shaft is too large, the jumping head can compress the spring to shrink, the situation that the whole shell is propped against a switch cabinet is avoided, the requirement on the installation precision of the shell is greatly reduced, and the installation is more convenient.
In the emergency brake separating and tripping device, one side of the shell, which is used for the outer end of the propulsion shaft to extend, is an adsorption side, the shell is also connected with a controller and a distance detector, the distance detector deviates from the extending position of the propulsion shaft and can detect the distance between a blocking object on one side of the adsorption side of the shell and the shell, and the controller can control the driving motor to retract into the propulsion shaft when the distance between the blocking object and the shell is increased to a set value. In the scheme, the blocking object is a switch cabinet door, when the shell is adsorbed at a proper position on the switch cabinet door, the adsorption side is opposite to the switch cabinet door, no blocking exists on the switch cabinet at the outer end of the pushing shaft, the outer end of the pushing shaft can stretch in to trigger the opening button, the other positions of the adsorption side, which deviate from the outer end of the pushing shaft, are opposite to the switch cabinet door, the distance between the two positions is basically kept constant, the distance detector is used for detecting the distance between the adsorption side and the switch cabinet door, when the distance is changed from small to large until a set value is reached, the pushing shaft is judged to be excessively pushed, so that the shell is separated from the switch cabinet door, at the moment, the controller receives a signal sent by the distance detector, the driving motor is controlled to stop pushing the pushing shaft and drive the pushing shaft to reversely retract, the shell is prevented from falling from the switch cabinet door, the excessive pushing condition of the pushing shaft is effectively protected, and the distance precision requirement between the pushing shaft and the opening button is further reduced when the shell is installed. Here, the set value may be set according to a section between a space when the housing is mounted on the cabinet door of the switchgear and a space when the housing falls down at the time of actual test.
In the emergency brake-separating and tripping device, the shell is also connected with a sound detector capable of detecting the magnitude of environmental sound, and the controller can control the driving motor to retract the propulsion shaft when the environmental sound is greater than a set value. The switch cabinet brake-separating button is pressed down, can send a sound to beat the sound when realizing brake separation, detects brake separation state through the sound detector and in time control the propulsion axle by the controller after brake separation is accomplished and retract, avoid the propulsion axle to advance excessively, cooperate above-mentioned use of distance detector, carry out dual protection to the excessive condition of propulsion axle to advance, effectively avoid leading to the condition that whole casing drops because of the installation distance is too tight.
In the emergency brake-separating and tripping device, the distance detector comprises a long rod-shaped ejector rod, a switch connected with the controller and a spring plate connected to the switch, wherein the inner end of the ejector rod can be abutted against the spring plate, the outer end of the ejector rod can extend out of the adsorption side of the shell under the action of self elasticity of the spring plate, and the switch can send a rollback signal to the controller when the ejector rod is outwards ejected to a set distance by the spring plate. When the shell adsorbs on the cubical switchboard cabinet door, the cubical switchboard cabinet door blocks the ejector pin and outwards stretches out, and the ejector pin is inner to be acted on the shell fragment, makes its inwards buckling, and when propulsion axle propulsion distance was too big, the casing was kept away from the cubical switchboard cabinet door gradually, and the shell fragment resumes and outwards pops out under self elasticity effect, and the ejector pin outwards pops out under the elasticity of shell fragment, and the shell fragment is kept away from the switch, and the switch sends the back signal to the controller, and driving motor drive propulsion axle is back. The mechanical distance detector is less influenced by external environmental factors, and the detection result is more reliable.
In the emergency brake separating and tripping device, the ejector rod comprises a rod body and an adjusting sleeve which is connected with the outer side of the outer end of the rod body in a threaded mode, and the adjusting sleeve is made of an insulating material. The adjusting sleeve made of the insulating material not only can ensure the use safety, but also can adjust the axial length of the ejector rod through rotating the adjusting sleeve, so that the distance detection of the ejector rod in the same jumping device can be suitable for the use requirements of more different switch cabinets, and the application range is wide.
As another case, in the emergency brake-off tripping device, the distance detector includes an infrared ranging sensor.
In the emergency brake opening and tripping device, the tripping head is barrel-shaped, one end of the opening is sleeved on the outer side of the outer end of the pushing shaft, the outer side of the outer end of the pushing shaft is in threaded connection with an annular connecting ring, the inner wall of one end of the opening of the tripping head is provided with a protruding limiting part, two ends of the elastic piece respectively act on the inner side of the closed end of the tripping head and the connecting ring, and the limiting part can be propped against the connecting ring. The jump head is barrel-shaped and sleeved outside the propulsion shaft, so that the radial size of the jump head is increased, the requirement on the installation precision of the radial position of the propulsion shaft is reduced, and the installation is further facilitated. In addition, according to the different in-service use environment, the whole axial length of the propulsion shaft and the jump head can be adjusted through rotating the connecting ring so as to adapt to the use requirements of different in-service use environments.
In the emergency brake-separating and tripping device, the tripping head is fixedly provided with the detection magnet, one side of the shell, which is provided for the pushing shaft to extend out, is fixedly provided with the magnetic switch, the magnetic switch is connected with the controller, and the positions of the magnetic switch and the detection magnet are corresponding. After the brake separating button is pressed, the pushing shaft reversely retracts until the detecting magnet is close to the magnetic switch, the magnetic switch is closed, and the controller sends a signal to the driving motor to control the driving motor to stop working. The return control is realized by detecting the matching of the magnet and the magnetic switch, so that the phenomenon that the stroke of the next extension is influenced due to excessive retraction of the propulsion shaft is avoided.
In the emergency brake-separating tripping device, a positioning ring protruding into a ring shape is arranged on the side surface of the shell for the pushing shaft to protrude out, the outer end of the pushing shaft can pass through the positioning ring, and the magnetic switch is fixed at the positioning ring. The locating ring protrudes out of the side face of the shell, so that convenience can be provided for installation of the magnetic switch, and position indication of the pushing shaft can be provided for the shell when the shell is installed on a cabinet door of the switch cabinet, and installation is facilitated.
In the emergency brake separating and tripping device, the shell is provided with the through hole, the side wall of the through hole is provided with the concave straight strip-shaped guide groove along the axial direction, the outer side of the tripping head is provided with the convex guide part, and the guide part extends into the guide groove. The jump head is moved more stably through the cooperation of the guide groove and the guide part.
Compared with the prior art, the emergency brake separating and tripping device has the following advantages:
1. through the mode of overlapping the jump head in the propulsion axle outside and setting up the elastic component between jump head and propulsion axle, increase the axial length and the radial width of propulsion axle, reduce the installation accuracy requirement when this device's of beating casing adsorbs on the cubical switchboard door, made things convenient for the installation, and avoided the casing to drop from the cubical switchboard.
2. The double protection of the propulsion shaft is realized by detecting the breaking and jumping sound through the sound detector and detecting whether the shell is separated from the cabinet door of the switch cabinet or not through the double detection of the distance detector, so that the shell is effectively ensured not to fall off, the requirement on the axial distance precision during the installation of the shell is further reduced, and the installation is convenient.
Drawings
Fig. 1 is a schematic sectional view of the emergency brake-separating tripping device.
Fig. 2 is a schematic cross-sectional view of another view of the emergency brake-separating and tripping device.
Fig. 3 is a schematic structural diagram of the adsorption side of the emergency brake separating and tripping device.
Fig. 4 is a schematic cross-sectional view of the emergency brake-separating and tripping device when the tripping head compresses the elastic member.
Fig. 5 is a schematic block diagram of the emergency brake-separating tripping device.
In the figure, 1, a shell, 11, an adsorption side, 12, a positioning ring, 13, a penetrating hole, 2, an adsorption magnet, 3, a driving motor, 31, a pushing shaft, 4, a jump head, 41, a limiting part, 5, an elastic piece, 6, a controller, 7, a distance detector, 71, a push rod, 72, a switch, 73, a spring piece, 8, a sound detector, 9, a connecting ring, 10, a detection magnet, 101 and a magnetic switch.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, the emergency brake separating and tripping device comprises a shell 1, an adsorption magnet 2 and a driving motor 3, wherein the adsorption magnet 2 and the driving motor 3 are fixed on the shell 1, one side of the shell 1 is an adsorption side 11 which is arranged opposite to a switch cabinet, and a through hole 13 is formed in the shell 1 of the adsorption side 11. The drive motor 3 has a propeller shaft 31 which can axially pass through the through-hole 13 and protrude from the suction side 11 out of the housing 1. In this embodiment, the attracting magnet 2 is a knob magnet and at least two attracting magnets are fixed on the housing 1, the driving motor 3 is a propulsion motor capable of driving the propulsion shaft 31 to move axially, and one side of the attracting side 11 of the housing 1 is a plane.
The outer end of the propulsion shaft 31 is provided with a jumping head 4, the jumping head 4 is barrel-shaped, one end of the opening is sleeved on the outer side of the outer end of the propulsion shaft 31, the outer side of the outer end of the propulsion shaft 31 is in threaded connection with a circular connecting ring 9, the inner wall of one end of the opening of the jumping head 4 is provided with a protruding circular limiting part 41, an elastic piece 5 is arranged between the jumping head 4 and the propulsion shaft 31, two ends of the elastic piece 5 respectively act on the inner side of the closed end of the jumping head 4 and the connecting ring 9, and the limiting part 41 can be propped against the connecting ring 9 under the elastic action of the elastic piece 5. In this embodiment, the jump head 4 has a split structure, and includes a cylindrical body and an end cover screwed on the front end of the body, the elastic member 5 is a spring, a locking hole is formed in the side of the connecting ring 9, a locking pin is connected in the locking hole, and after the connecting ring 9 is screwed with the propulsion shaft 31, the relative position between the connecting ring 9 and the propulsion shaft 31 can be locked by the locking pin.
The side wall of the through hole 13 is provided with concave guide grooves which are in a straight strip shape along the axial direction, the guide grooves are distributed uniformly around the axis of the through hole 13, the outer side of the jump head 4 is provided with convex guide parts which are in a straight strip shape, and the guide parts extend into the guide grooves and can move back and forth along the guide grooves. In this embodiment, the matching structure of the guide groove and the guide part can guide the axial movement of the jump head 4, and a spline structure can be selected for matching according to the requirement.
The outer end of the pushing shaft 31 can pass through the positioning ring 12, and the detection magnet 10 is also fixed in the end cover of the jumping head 4.
As shown in fig. 3, a magnetic switch 101 is fixed to the positioning ring 12 of the housing 1, and the magnetic switch 101 corresponds to the position of the detection magnet 10 and can detect whether the detection magnet 10 moves to the corresponding position. A distance detector 7 is provided on the suction side 11 of the housing 1 at a position offset from the projecting position of the propeller shaft 31, and the distance detector 7 can detect whether or not the distance between the stopper provided on the suction side 11 side of the housing 1 and the housing 1 reaches a set value. Here, the set value may be 1mm to 10mm, preferably 4mm.
As shown in fig. 2, the distance detector 7 includes a rod-shaped push rod 71, a switch 72, and a spring piece 73 connected to the switch 72, one end of the spring piece 73 is connected to the switch 72, the other end of the spring piece is spring-loaded outwards, the inner end of the push rod 71 can be abutted against the other end of the spring piece 73, the outer end of the push rod 71 can extend from the adsorption side 11 of the housing 1, and the switch 72 can send a retraction signal when the other end of the spring piece 73 springs the push rod 71 outwards to a set distance. In order to avoid the ejector pin 71 being ejected completely, the outer side of the ejector pin 71 is also provided with a convex shoulder which is convex and annular.
As shown in fig. 5, the emergency brake-separating and tripping device further comprises a controller 6 and a sound detector 8, wherein the sound detector 8, the distance detector 7, the driving motor 3 and the magnetic switch 101 are all connected with the controller 6. Wherein the sound detector 8 can detect the magnitude of the environmental sound, the controller 6 can control the driving motor 3 to retract the propulsion shaft 31 when the environmental sound is greater than a set value, and further, the controller 6 can control the driving motor 3 to retract the propulsion shaft 31 when the distance between the cabinet door as a blocking object and the housing 1 increases to the set value, and can control the driving motor 3 to stop operation when the magnetic switch 101 detects the detection magnet 10. Here, the setting value of the environmental sound db may be 30 to 80 db, preferably 50 db.
When the emergency brake separating and tripping device is used, an operator adsorbs the whole shell 1 on a cabinet door of a switch cabinet through the adsorption magnet 2, and the positioning ring 12 protruding from the adsorption side 11 of the shell 1 is opposite to a brake separating button in the switch cabinet, so that the relative distance between the two is not required to be adjusted. Then the driving motor 3 is started to drive the pushing shaft 31 to extend outwards axially, and the jump head 4 is ejected outwards along with the pushing shaft 31 under the action of the elastic force of the elastic piece 5. As shown in fig. 4, when the outer end of the trip head 4 moves to the opening button, the opening button is pressed under the action of the elastic force of the elastic piece 5 to realize opening, and when the opening button is still pushed out outwards after being pressed, for example, the pushing shaft 31 is still pushed out, the trip head 4 abuts against the opening button and is blocked by the elastic piece 5 compressed by the opening button, so that the whole shell 1 is prevented from being pushed open due to excessive pushing of the pushing shaft 31.
When the brake is separated, a sound is generated to jump, the sound detector 8 is used for detecting the sound to judge the brake separating state and sending a signal to the controller 6 after the brake separating is finished, and the controller 6 timely controls the retraction of the propulsion shaft 31 to avoid the excessive propulsion of the propulsion shaft 31.
After the controller 6 controls the push shaft 31 to retract, the magnetic switch 101 at the positioning ring 12 detects that the detection magnet 10 retracts to the positioning ring 12 and sends a signal to the controller 6, and the controller 6 controls the driving motor 3 to stop working.
In the process of outwards ejecting the push shaft 31, the outer end of the ejector rod 71 of the distance detector 7 always abuts against the switch cabinet door, the elastic sheet 73 is kept in a compressed state, when the push shaft 31 is in an excessively large push distance and no brake-off bounce sound is heard or the sound detector 8 fails, the shell 1 can be outwards pulled out against the magnetic attraction of the attraction magnet 2, the distance between the attraction side 11 of the shell 1 and the switch cabinet door is continuously increased until the set value is reached, the elastic sheet 73 is completely ejected and separated from the switch 72, the situation that the push shaft 31 is excessively pushed to cause the shell 1 to be separated from the switch cabinet door and to fall off is judged, at the moment, the controller 6 receives a signal sent by the switch 72 in the distance detector 7, and controls the driving motor 3 to stop pushing the push shaft 31 and drive the push shaft 31 to reversely retract, so that the shell 1 is prevented from falling off from the switch cabinet door, and the excessive push condition of the push shaft 31 is effectively protected.
The above set values are merely illustrative, and the specific numerical value setting can be performed in-situ according to the actual use environment, and the indication value of each critical point is used as a reference value, and an appropriate parameter range is selected as the set value.
Example two
The scheme of the embodiment is the same as that of the first embodiment, except that the ejector rod 71 comprises a rod body and an adjusting sleeve in threaded connection with the outer side of the outer end of the rod body, the adjusting sleeve is made of an insulating material, when the device is used, the axial length of the whole ejector rod 71 can be adjusted by rotating the adjusting sleeve, so that the distance detection of the ejector rod 71 in the same jumping device can be suitable for the use requirements of more different switch cabinets, the distance detector 7 can also adopt an infrared distance measuring sensor, and the elastic piece 5 can adopt elastic fillers such as silica gel or rubber.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.