CN112710264A - Circuit breaker overtravel measuring device and circuit breaker overtravel measuring system - Google Patents
Circuit breaker overtravel measuring device and circuit breaker overtravel measuring system Download PDFInfo
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- CN112710264A CN112710264A CN202011467375.0A CN202011467375A CN112710264A CN 112710264 A CN112710264 A CN 112710264A CN 202011467375 A CN202011467375 A CN 202011467375A CN 112710264 A CN112710264 A CN 112710264A
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- circuit breaker
- measuring
- driving rod
- top plate
- travel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a breaker over-travel measuring device and a breaker over-travel measuring system, wherein the breaker over-travel measuring device comprises: the base is internally provided with a jacking device placing space; a top plate; the driving rod is matched with the top plate in an up-and-down guiding manner, the upper end of the driving rod is connected with the movable end of the circuit breaker, and the lower end of the driving rod is matched with the lifting output end of the jacking device in a pushing manner; the driving rod is provided with a measuring structure, the driving rod is provided with a first measuring position when the circuit breaker is in a just-closed state and a second measuring position after the circuit breaker is closed in the upward moving process, the distance between the measuring structure and the top plate is a first distance value when the driving rod is in the first measuring position, the distance between the measuring structure and the top plate is a second distance value when the driving rod is in the second measuring position, and the over-travel value of the circuit breaker is obtained by multiplying the difference value of the second distance value and the first distance value or the difference value by a certain travel transformation ratio. The measuring device is simple in structure and convenient and visual to operate, the jacking device can be controlled to control the ascending speed of the driving rod in the using process, and the measuring precision is prevented from being influenced by too high speed.
Description
Technical Field
The invention relates to the technical field of over-travel measuring devices of circuit breakers, in particular to an over-travel measuring device and an over-travel measuring system of a circuit breaker.
Background
In the mechanical characteristic test of the ultrahigh-voltage sulfur hexafluoride circuit breaker, the measurement of the position of a right joint and the measurement of an overtravel value are necessary items and are key parameters related to the quality of the circuit breaker. The device for reliably and accurately measuring the over-travel is designed, and has important significance for ensuring the normal opening and closing of the circuit breaker.
At present, in circuit breaker overtravel measuring device, there is the electrodynamic type overtravel device mainly, and electric actuator action speed is fast, and measurement of efficiency is than higher, is fit for detecting in batches greatly, but also because action speed is fast, if the bad electric actuator of circuit breaker centering can lead to the circuit breaker to move quiet end and damage, has the potential safety hazard. In addition, the structure is complex, the manufacturing cost is high, the assembly time is consumed, the calculation mode is complex, the measurement result is not visual, and the measurement precision of the rigid joint is poor due to the fact that the electric device is high in speed, and therefore the accuracy of the measurement result is poor.
Disclosure of Invention
The invention aims to provide the over-travel measuring device of the circuit breaker, which has the advantages of simple structure, low manufacturing cost, simple and convenient operation, simple and visual measuring mode and capability of ensuring the accuracy of the measured value; the invention also aims to provide the over-travel measuring system of the circuit breaker, which has the advantages of simple structure, low manufacturing cost, simple and convenient operation, simple and visual measuring mode and capability of ensuring the accuracy of the measured value.
In order to achieve the purpose, the over-travel measuring device of the circuit breaker adopts the following technical scheme:
a circuit breaker over-travel measurement device comprising:
the jacking device comprises a base, wherein a placing space for placing the jacking device is formed in the base;
the top plate is arranged above the base and is horizontally arranged;
the driving rod penetrates through the top plate and is matched with the top plate in an up-and-down guiding and moving mode, a guiding structure used for guiding the driving rod is arranged on the top plate, a connecting structure used for being in transmission connection with the movable end of the circuit breaker is arranged at the upper end of the driving rod, and the lower end of the driving rod is in pushing fit with the lifting output end of the jacking device so as to move upwards under the pushing action of the lifting output end and drive the movable end of the circuit breaker to move to achieve switching-on;
the measuring structure is arranged on the driving rod, the driving rod moves upwards, the first measuring position is arranged in the process that the circuit breaker is in a just-closed state, and the second measuring position is arranged after the circuit breaker is closed, when the driving rod is located at the first measuring position, the distance between the measuring structure and the top plate is a first distance value, when the driving rod is located at the second measuring position, the distance between the measuring structure and the top plate is a second distance value, and the over-travel value of the circuit breaker is obtained by multiplying the difference value between the second distance value and the first distance value or the difference value by a certain travel transformation ratio.
The beneficial effects of the above technical scheme are that: the measuring device comprises a base, a top plate and a driving rod, the top plate guides the up-and-down movement of the driving rod, a placing space in the base can be used for conveniently placing the jacking device, the lower end of the driving rod is in pushing fit with the lifting output end of the jacking device and can move upwards under the pushing action of the lifting output end, and a connecting structure at the upper end of the driving rod is in transmission connection with the movable end of the circuit breaker, so that the movable end of the circuit breaker can be driven to move to realize switching; meanwhile, a measuring structure is arranged on the driving rod, a first measuring position when the circuit breaker is in a just-closed state and a second measuring position after the circuit breaker is closed are arranged in the upward moving process of the driving rod, when the driving rod is located at the first measuring position, the distance between the measuring structure and the top plate is a first distance value, when the driving rod is located at the second measuring position, the distance between the measuring structure and the top plate is a second distance value, and the over-travel value of the circuit breaker is obtained by multiplying the difference value between the second distance value and the first distance value or the difference value by a certain travel transformation ratio.
That is to say, the measuring device in the invention provides a power source by means of the jacking device, and is specially provided with a placing space for placing the jacking device, the circuit breaker is switched on by utilizing the upward movement of the driving rod, in the process of upward movement of the driving rod, a first distance value is measured at a first measuring position of the driving rod, a second distance value is measured at a second measuring position of the driving rod, if the movement direction of the driving rod is consistent with the movement direction of a moving contact of the circuit breaker, the difference value between the second distance value and the first distance value is the over-travel value of the circuit breaker, if the movement direction of the driving rod is inconsistent with the movement direction of the moving contact of the circuit breaker, the over-travel value is arranged at a certain included angle, such as a triple-box double-fracture circuit breaker, at the moment, the difference value is required to be multiplied by a certain.
The whole measuring process is simple and convenient to operate, the two measuring positions of the driving rod can be visually observed, and the measurement of two distance values is simple. Meanwhile, the measuring device is simple in structure, convenient to manufacture and low in manufacturing cost, only a jacking device needs to be additionally configured, and in the using process, the jacking device can be manually operated to control the lifting speed of the driving rod, so that the circuit breaker can be in a rigid state at a slower speed, and the measuring precision is prevented from being influenced by the too fast speed, and therefore the accuracy of a measured value can be guaranteed.
Further, for the setting and the fixing of convenient guide structure, guarantee the direction effect, guide structure includes the guide cylinder and fixes the wear-resisting cover in the guide cylinder, is provided with on the guide cylinder to be used for fixing the mounting flange on the roof with the guide cylinder, wear-resisting cover and actuating lever sliding contact cooperation.
Further, in order to make the overall arrangement reasonable, avoid the guide cylinder to influence the measurement, the guide cylinder is fixed on the downside of roof, measurement structure is located the top of roof.
Furthermore, in order to facilitate the arrangement of the measuring structure and the measurement operation, the measuring structure is a measuring plate fixed on the driving rod, the measuring plate is horizontally arranged, and the transverse dimension of the measuring plate is smaller than that of the top plate.
Furthermore, in order to conveniently measure the installation of board, measure board threaded connection in the upper end of actuating lever, the upper end of actuating lever is provided with the screw thread section.
Further, make things convenient for connection structure's setting and installation, make things convenient for connection structure to be connected with the even board of circuit breaker movable end, connection structure includes threaded connection connecting seat in the screw thread section, the connecting seat is located the top of measuring the board, and the connecting seat includes two connection otic placodes that are parallel to each other, and connection structure still includes the connecting pin of wearing to establish on two connection otic placodes, and two connection otic placodes are used for setting up respectively in the even board both sides of circuit breaker movable end, and the connecting pin is used for passing even board to realize that the transmission between circuit breaker movable end and the actuating lever is connected.
Further, for the manufacturing of the base conveniently, simplify the base structure, conveniently place the formation in space, the base includes at least a set of longeron, has two parallel interval arrangement's longeron in a set of, and the base still includes the fixed plate of fixing at the longeron top, place the space and enclose by fixed plate and longeron, be provided with on the fixed plate and supply the hole of dodging that the actuating lever passed.
Furthermore, for the convenience of fixing the top plate and finely adjusting the position of the top plate, a plurality of supporting screw rods used for fixedly supporting the top plate are connected between the fixing plate and the top plate, and nuts are respectively connected to the upper side and the lower side of the top plate on the supporting screw rods to adjust the upper position and the lower position of the top plate.
Furthermore, for the convenience of setting of circuit breaker, and then convenient measurement, be provided with on the roof be used for with the casing fixed connection's of circuit breaker fixed knot construct to make the roof support the circuit breaker.
In order to achieve the purpose, the over-travel measuring system of the circuit breaker adopts the following technical scheme:
a circuit breaker over-travel measurement system comprising:
the measuring circuit comprises a power supply and an indicator light, and is connected to a wiring board of the circuit breaker so as to be conducted and light the indicator light when the circuit breaker is switched on, thereby indicating that the circuit breaker is in a just-closed state;
the jacking device is provided with a lifting output end;
a measuring device, the measuring device comprising:
the jacking device comprises a base, wherein a placing space for placing the jacking device is formed in the base;
the top plate is arranged above the base and is horizontally arranged;
the driving rod penetrates through the top plate and is matched with the top plate in an up-and-down guiding and moving mode, a guiding structure used for guiding the driving rod is arranged on the top plate, a connecting structure used for being in transmission connection with the movable end of the circuit breaker is arranged at the upper end of the driving rod, and the lower end of the driving rod is in pushing fit with the lifting output end of the jacking device so as to move upwards under the pushing action of the lifting output end and drive the movable end of the circuit breaker to move to achieve switching-on;
the measuring structure is arranged on the driving rod, the driving rod moves upwards, the first measuring position is arranged in the process that the circuit breaker is in a just-closed state, and the second measuring position is arranged after the circuit breaker is closed, when the driving rod is located at the first measuring position, the distance between the measuring structure and the top plate is a first distance value, when the driving rod is located at the second measuring position, the distance between the measuring structure and the top plate is a second distance value, and the over-travel value of the circuit breaker is obtained by multiplying the difference value between the second distance value and the first distance value or the difference value by a certain travel transformation ratio.
The beneficial effects of the above technical scheme are that: the measuring system comprises a measuring circuit, the measuring circuit comprises a power supply and an indicator light, the measuring circuit is connected to a wiring board of the circuit breaker, the measuring circuit can be switched on and the indicator light is turned on when the circuit breaker is switched on, and therefore the circuit breaker is indicated to be in a rigid closing state, and operators can know whether the circuit breaker is in the rigid closing state or not.
The measuring device comprises a base, a top plate and a driving rod, the top plate guides the up-and-down movement of the driving rod, a placing space in the base can be used for conveniently placing the jacking device, the lower end of the driving rod is in pushing fit with the lifting output end of the jacking device and can move upwards under the pushing action of the lifting output end, and a connecting structure at the upper end of the driving rod is in transmission connection with the movable end of the circuit breaker, so that the movable end of the circuit breaker can be driven to move to realize switching; meanwhile, a measuring structure is arranged on the driving rod, a first measuring position when the circuit breaker is in a just-closed state and a second measuring position after the circuit breaker is closed are arranged in the upward moving process of the driving rod, when the driving rod is located at the first measuring position, the distance between the measuring structure and the top plate is a first distance value, when the driving rod is located at the second measuring position, the distance between the measuring structure and the top plate is a second distance value, and the over-travel value of the circuit breaker is obtained by multiplying the difference value between the second distance value and the first distance value or the difference value by a certain travel transformation ratio.
That is to say, measuring device relies on jacking device to provide the power source to specially set up and place the jacking device in the space, utilize jacking device to push away the actuating lever rebound, thereby make the circuit breaker close a floodgate, and at actuating lever rebound in-process, measure a first distance value in the first measurement position of actuating lever, the first measurement position of actuating lever also is when the circuit breaker is in just closing the state, and the pilot lamp can light this moment. The second distance value is measured at the second measuring position of the driving rod, if the moving direction of the driving rod is consistent with the moving direction of the moving contact of the circuit breaker, the difference value between the second distance value and the first distance value is the over-travel value of the circuit breaker, if the moving direction of the driving rod is inconsistent with the moving direction of the moving contact of the circuit breaker, the over-travel value can be converted into the over-travel value of the circuit breaker by multiplying a certain travel transformation ratio if the over-travel value is arranged at a certain included angle.
The whole measuring process is simple and convenient to operate, the two measuring positions of the driving rod can be visually observed, and the measurement of two distance values is simple. Meanwhile, the measuring device is simple in structure, convenient to manufacture and low in manufacturing cost, only one jacking device needs to be configured, and in the using process, the jacking device can be manually operated to control the lifting speed of the driving rod, so that the circuit breaker can be in a rigid state at a slower speed, and the influence of the over-high speed on the measuring precision is avoided, and therefore the accuracy of the measured value can be guaranteed.
Further, for the setting and the fixing of convenient guide structure, guarantee the direction effect, guide structure includes the guide cylinder and fixes the wear-resisting cover in the guide cylinder, is provided with on the guide cylinder to be used for fixing the mounting flange on the roof with the guide cylinder, wear-resisting cover and actuating lever sliding contact cooperation.
Further, in order to make the overall arrangement reasonable, avoid the guide cylinder to influence the measurement, the guide cylinder is fixed on the downside of roof, measurement structure is located the top of roof.
Furthermore, in order to facilitate the arrangement of the measuring structure and the measurement operation, the measuring structure is a measuring plate fixed on the driving rod, the measuring plate is horizontally arranged, and the transverse dimension of the measuring plate is smaller than that of the top plate.
Furthermore, in order to conveniently measure the installation of board, measure board threaded connection in the upper end of actuating lever, the upper end of actuating lever is provided with the screw thread section.
Further, make things convenient for connection structure's setting and installation, make things convenient for connection structure to be connected with the even board of circuit breaker movable end, connection structure includes threaded connection connecting seat in the screw thread section, the connecting seat is located the top of measuring the board, and the connecting seat includes two connection otic placodes that are parallel to each other, and connection structure still includes the connecting pin of wearing to establish on two connection otic placodes, and two connection otic placodes are used for setting up respectively in the even board both sides of circuit breaker movable end, and the connecting pin is used for passing even board to realize that the transmission between circuit breaker movable end and the actuating lever is connected.
Further, for the manufacturing of the base conveniently, simplify the base structure, conveniently place the formation in space, the base includes at least a set of longeron, has two parallel interval arrangement's longeron in a set of, and the base still includes the fixed plate of fixing at the longeron top, place the space and enclose by fixed plate and longeron, be provided with on the fixed plate and supply the hole of dodging that the actuating lever passed.
Furthermore, for the convenience of fixing the top plate and finely adjusting the position of the top plate, a plurality of supporting screw rods used for fixedly supporting the top plate are connected between the fixing plate and the top plate, and nuts are respectively connected to the upper side and the lower side of the top plate on the supporting screw rods to adjust the upper position and the lower position of the top plate.
Furthermore, for the convenience of setting of circuit breaker, and then convenient measurement, be provided with on the roof be used for with the casing fixed connection's of circuit breaker fixed knot construct to make the roof support the circuit breaker.
Drawings
FIG. 1 is a schematic diagram of the measurement of the over travel measurement system of the circuit breaker according to the present invention;
FIG. 2 is a front view of the measuring device of FIG. 1;
FIG. 3 is a side view of the measuring device of FIG. 1;
fig. 4 is a separate structural view of the connecting socket of fig. 2 and 3;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a cross-sectional view of the measurement plate of FIGS. 2 and 3;
FIG. 7 is a top view of the push plate of FIGS. 2 and 3;
fig. 8 is a top view of the top plate of fig. 2 and 3.
In the figure: 100-a measuring device; 1-long stringer; 2-a pull rod; 3, fixing a plate; 4-a top plate; 41-drive rod perforation; 42-a first fixation hole; 43-screw perforation; 44-a second fixation hole; 5-supporting the screw rod; 6-a nut; 7-a drive rod; 8-a connecting seat; 81-connecting ear plates; 82-pin holes; 83-first threaded hole; 9-connecting pin; 10-measuring plate; 101-sinking a groove; 102-a second threaded hole; 11-a guide cylinder; 12-short stringers; 13-push plate; 131-a third threaded hole; 200-a circuit breaker; 201-dead end patch panel; 202-moving end patch panel; 300-an indicator light; 400-power supply.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Fig. 1 shows an embodiment of a circuit breaker over-travel measurement system in the present invention, in which a circuit breaker 200, which is a measurement object in the present embodiment, is a triple-box double-break circuit breaker, that is, the circuit breaker 200 has two arc-extinguishing chambers, and includes two fixed terminal connection boards 201 respectively conducted with fixed contacts in the arc-extinguishing chambers, and also includes two movable terminal connection boards 202 respectively conducted with movable contacts in the arc-extinguishing chambers, and the two movable terminal connection boards 202 are electrically connected. The driving mechanism for driving the moving contacts in the two arc extinguish chambers to act simultaneously is arranged in the triple box, the driving mechanism and the moving contacts are defined as moving ends of the circuit breaker, the specific structure of the driving mechanism belongs to the prior art, and detailed description is omitted in the invention.
As shown in fig. 1, the over-travel measuring system of the circuit breaker includes a measuring circuit, the measuring circuit includes a power supply 400 and an indicator light 300, the measuring circuit is used for being connected between two fixed terminal wiring boards 201, when the circuit breaker is closed, the measuring circuit is conducted at the moment when moving contacts in two arc-extinguishing chambers are in contact with fixed contacts, and the indicator light is turned on, so as to indicate that the circuit breaker is in a rigid closed state.
The over-travel measuring system of the circuit breaker further comprises a jacking device (not shown in the figure) and a measuring device 100, wherein the jacking device is provided with a lifting output end capable of lifting up and down, and preferably, the jacking device adopts a manual jack so as to conveniently and manually control the moving speed of the lifting output end.
Referring to fig. 2 and 3, the measuring device 100 includes a base, which includes two sets of longitudinal beams disposed up and down, and one set includes two longitudinal beams disposed in parallel at intervals, wherein the lower set is a long longitudinal beam 1, and the upper set is a short longitudinal beam 12. Long longeron 1 and short longeron 12 all adopt the U-shaped channel-section steel to the notch of two longerons all arranges mutually in every group mutually, passes through bolt fixed connection between two upper and lower longerons, stabilizes with the structure of guaranteeing the base. In addition, be connected with pull rod 2 between two long longerons 1, pull rod 2 has two and is located the both ends of long longeron respectively, and two pull rod 2 have further strengthened the structural strength of base, also make things convenient for fork truck's fork to hold up whole measuring device simultaneously, the convenient transfer.
The base is still including fixing fixed plate 3 at 12 tops of short longeron, and the 3 levels of fixed plate set up, and the space that encloses between fixed plate 3 and the two sets of longerons forms the space of placing that is used for placing the jacking device.
The measuring device 100 further includes a top plate 4 horizontally disposed, the top plate 4 is located above the fixing plate 3, a plurality of supporting screws 5 for fixedly supporting the top plate 4 are connected between the fixing plate 3 and the top plate 4, and as shown in fig. 8, bolt through holes 43 for the supporting screws 5 to pass through are disposed on the top plate 4. As shown in fig. 1, nuts 6 are respectively connected to the upper and lower sides of the top plate 4 on the supporting screw 5 to facilitate adjustment of the upper and lower positions of the top plate 4.
The measuring device 100 further includes a driving rod 7 disposed through the top plate 4, and as shown in fig. 8, the top plate 4 is provided with a driving rod through hole 41 through which the driving rod 7 passes. The driving rod 7 is movably matched with the top plate 4 in an up-and-down guiding manner, so that a guiding structure for guiding the driving rod 7 is arranged on the top plate 4, as shown in fig. 2 and 3, the guiding structure comprises a guiding cylinder 11 and a wear-resistant sleeve (not shown in the figure) fixed in the guiding cylinder 11, a fixing flange for fixing the guiding cylinder 11 on the top plate 4 is arranged on the guiding cylinder 11, the guiding cylinder 11 is fixed on the lower side surface of the top plate 4, and as shown in fig. 8, a first fixing hole 42 is arranged on the top plate 4 for facilitating the fixing of the guiding cylinder 11. The wear-resistant sleeve is matched with the driving rod 7 in a sliding contact mode, and preferably, the wear-resistant sleeve is a copper sleeve.
As shown in fig. 2, a push plate 13 is connected to a lower end of the driving rod 7 through the fixed plate 3, and for this purpose, an avoiding hole (not shown) through which the driving rod 7 passes and which can avoid the push plate 13 is provided in the fixed plate 3. The push plate 13 is screwed to the lower end of the driving rod 7 so that a threaded section (not shown) is provided at the lower end of the driving rod 7, and as shown in fig. 7, a third threaded hole 131 is provided in the push plate 13. The push plate 13 is used for being matched with a lifting output end of the jacking device in a pushing mode so as to drive the driving rod 7 to move upwards under the pushing action of the lifting output end and drive the moving end of the circuit breaker to move to achieve closing.
The measuring device 100 further includes a measuring structure provided on the driving rod 7, as shown in fig. 2 and 3, the measuring structure is a measuring plate 10 fixed on the driving rod 7, the measuring plate 10 is located above the top plate 4 and horizontally arranged, and the transverse dimension of the measuring plate 10 is smaller than that of the top plate 4, so as to conveniently measure the distance from the measuring plate 10 to the top plate 4 by using a measuring scale. In particular, the measuring plate 10 is screwed onto the upper end of the driving rod 7, and the upper end of the driving rod 7 is also provided with a threaded section (not shown in the figures). As shown in fig. 6, the measuring plate 10 is provided with a second threaded hole 102, and a sinking groove 101 is provided at an opening of the second threaded hole 102.
The upper end of actuating lever 7 is provided with the connection structure that is used for being connected with the circuit breaker movable end transmission, as shown in fig. 2 and 3, connection structure includes connecting seat 8 of threaded connection on the upper end screw thread section of actuating lever 7, and connecting seat 8 is located the top of measuring board 10, and the bottom of connecting seat 8 sinks in sinking groove 101 to fix a position it. As shown in fig. 4 and 5, the connecting base 8 is provided with a first threaded hole 83, the connecting base 8 includes two connecting ear plates 81 parallel to each other, the driving mechanism of the moving end of the circuit breaker includes a connecting plate (not shown in the figure), and the two connecting ear plates 81 are respectively disposed on two sides of the connecting plate.
As shown in fig. 2 and 3, the connecting structure further includes a connecting pin 9 penetrating through the two connecting ear plates 81, and the connecting pin 9 also penetrates through the connecting plates to realize the transmission connection between the moving end of the circuit breaker and the driving rod 7. As shown in fig. 4 and 5, the two connecting lug plates 81 are provided with pin holes 82, respectively.
In addition, a fixing structure for fixedly connecting with the shell of the circuit breaker 200 is further arranged on the top plate 4, so that the top plate 4 supports the circuit breaker 200 and measurement operation is facilitated. Specifically, as shown in fig. 8, the fixing structure is a second fixing hole 44 formed in the top plate 4, and a lower triple-box flange of the circuit breaker 200 is fixedly connected to the top plate 4 by bolts.
The working principle of the over-travel measuring system of the circuit breaker is as follows:
during the use, fix the circuit breaker 200 that awaits measuring on measuring device's roof 4, connect measuring circuit between two quiet end wiring boards 201, when the circuit breaker was in the separating brake state, the pilot lamp did not light. Then the jack is operated manually to enable the lifting output end of the jack to move upwards, the lifting output end of the jack is matched with a push plate 13 at the bottom of a driving rod 7 in a pushing mode to push the driving rod 7 to move upwards, a connecting pin drives a connecting plate at the moving end of a circuit breaker to move, closing of the circuit breaker is achieved, an indicating lamp is turned on at the moment when a moving contact is contacted with a fixed contact, the circuit breaker is indicated to be in a closing state, the jack is stopped to be operated at the moment, the driving rod 7 is located at a first measuring position, the distance between the upper surface of a measuring plate 10 and the upper surface of a top plate 4 is measured, and the distance is a first distance value L1. And then, continuing to operate the jack, so that the driving rod 7 continues to move upwards, so that the movable contact and the fixed contact are completely switched on, at this time, the driving rod 7 moves upwards to the limit position, the switching-on of the circuit breaker is finished, the driving rod 7 is located at the second measurement position, and the distance between the upper surface of the measurement plate 10 and the upper surface of the top plate 4 is measured, and is a second distance value L2, as shown in fig. 3. Since the circuit breaker 200 in this embodiment is a triple-box double-break circuit breaker, the vertical motion of the driving rod is converted into the upward oblique motion of the movable contact, and therefore the over-travel value of the circuit breaker is obtained by multiplying the difference between the second distance value L2 and the first distance value L1 by the travel transformation ratio of 1.11.
Depending on the specific construction of the different circuit breakers, the above-mentioned travel ratio may not be 1.11, but other suitable values. Of course, if the movable contact of the circuit breaker moves vertically, the travel ratio is not needed, and the difference between the second distance value L2 and the first distance value L1 is the over-travel value of the circuit breaker.
The measuring device provided by the invention provides a power source by virtue of the jacking device, a special placing space is arranged for placing the jacking device, the jacking device is used for jacking the driving rod to move upwards, so that the circuit breaker is switched on, in the process that the driving rod moves upwards, a first distance value is measured at the first measuring position of the driving rod, and when the first measuring position of the driving rod, namely the circuit breaker, is in a rigid closing state, the indicating lamp can be turned on at the moment. And measuring a second distance value at a second measuring position of the driving rod, and calculating to obtain the over-travel value.
The whole process is simple and convenient to operate, the two measuring positions of the driving rod can be visually observed, and the measurement of two distance values is simple. Meanwhile, the measuring device is simple in structure, convenient to manufacture and low in manufacturing cost, only one jacking device needs to be configured, and in the using process, the jacking device can be manually operated to control the lifting speed of the driving rod, so that the circuit breaker can be in a rigid state at a slower speed, and the influence of the over-high speed on the measuring precision is avoided, and therefore the accuracy of the measured value can be guaranteed.
In other embodiments of the circuit breaker over-travel measurement system, the fixed structure on the top plate may also be a weld stud.
In other embodiments of the circuit breaker over-travel measurement system, the top plate may not have a fixing structure, and the circuit breaker is fixed by another supporting frame.
In other embodiments of the over-travel measuring system of the circuit breaker, a supporting block or a supporting plate may be disposed between the fixed plate and the top plate to fixedly support the top plate.
In other embodiments of the circuit breaker over-travel measurement system, the base may include only one set of stringers.
In other embodiments of the over-travel measuring system of the circuit breaker, the connecting structure on the driving rod can also be a pin hole directly machined on the driving rod, so that the driving rod is directly connected with the connecting plate of the moving end of the circuit breaker through a pin shaft, and if the moving end of the circuit breaker is not the connecting plate, the specific form of the connecting structure can also be changed accordingly.
In other embodiments of the over-travel measuring system of the circuit breaker, the measuring plate can be welded and fixed on the driving rod.
In other embodiments of the circuit breaker over-travel measurement system, the measurement plate may also be located below the top plate, and the distance between the lower surface of the measurement plate and the lower surface of the top plate is measured.
In other embodiments of the circuit breaker over-travel measuring system, the measuring structure is not a measuring plate, but a plurality of scale marks are arranged on the driving rod, and at the moment, a certain scale mark is directly used as a reference as the measuring structure, so that the first distance value and the second distance value can be visually read.
In other embodiments of the circuit breaker over-travel measurement system, the guide cylinder may also be fixed on the upper side of the top plate.
In other embodiments of the circuit breaker over-travel measurement system, the guide structure may be formed by only one guide cylinder, or directly using the driving rod through hole on the top plate as the guide structure.
The embodiment of the over-travel measuring device of the circuit breaker in the invention is as follows: the specific structure of the over-travel measuring device of the circuit breaker is the same as that of the measuring device in the over-travel measuring system of the circuit breaker, and the detailed description is omitted here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A circuit breaker over-travel measuring device, comprising:
the jacking device comprises a base, wherein a placing space for placing the jacking device is formed in the base;
the top plate is arranged above the base and is horizontally arranged;
the driving rod penetrates through the top plate and is matched with the top plate in an up-and-down guiding and moving mode, a guiding structure used for guiding the driving rod is arranged on the top plate, a connecting structure used for being in transmission connection with the movable end of the circuit breaker is arranged at the upper end of the driving rod, and the lower end of the driving rod is in pushing fit with the lifting output end of the jacking device so as to move upwards under the pushing action of the lifting output end and drive the movable end of the circuit breaker to move to achieve switching-on;
the measuring structure is arranged on the driving rod, the driving rod moves upwards, the first measuring position is arranged in the process that the circuit breaker is in a just-closed state, and the second measuring position is arranged after the circuit breaker is closed, when the driving rod is located at the first measuring position, the distance between the measuring structure and the top plate is a first distance value, when the driving rod is located at the second measuring position, the distance between the measuring structure and the top plate is a second distance value, and the over-travel value of the circuit breaker is obtained by multiplying the difference value between the second distance value and the first distance value or the difference value by a certain travel transformation ratio.
2. The over-travel measuring device of the circuit breaker according to claim 1, wherein the guiding structure comprises a guiding cylinder and a wear-resistant sleeve fixed in the guiding cylinder, a fixing flange for fixing the guiding cylinder on the top plate is arranged on the guiding cylinder, and the wear-resistant sleeve is in sliding contact fit with the driving rod.
3. The circuit breaker over-travel measurement device of claim 2, wherein the guide cylinder is secured to a lower side of the top plate, and the measurement structure is located above the top plate.
4. The over-travel measuring device of the circuit breaker according to any one of claims 1 to 3, wherein the measuring structure is a measuring plate fixed on the driving rod, the measuring plate is horizontally arranged, and the transverse dimension of the measuring plate is smaller than that of the top plate.
5. The over-travel measuring device of the circuit breaker according to claim 4, wherein the measuring plate is screwed to an upper end of the driving rod, and the upper end of the driving rod is provided with a screw thread section.
6. The over-travel measuring device of the circuit breaker according to claim 5, wherein the connecting structure comprises a connecting seat screwed on the threaded section, the connecting seat is located above the measuring plate, the connecting seat comprises two connecting ear plates parallel to each other, the connecting structure further comprises a connecting pin penetrating through the two connecting ear plates, the two connecting ear plates are respectively arranged on two sides of the connecting plate of the movable end of the circuit breaker, and the connecting pin is used for penetrating through the connecting plate to realize the transmission connection between the movable end of the circuit breaker and the driving rod.
7. The over-stroke measuring device for the circuit breaker according to any one of claims 1 to 3, wherein the base comprises at least one group of longitudinal beams, two longitudinal beams are arranged in parallel at intervals in one group, the base further comprises a fixing plate fixed at the top of the longitudinal beams, the placing space is enclosed by the fixing plate and the longitudinal beams, and the fixing plate is provided with avoiding holes for the driving rod to pass through.
8. The over-travel measuring device of the circuit breaker according to claim 7, wherein a plurality of supporting screws for fixedly supporting the top plate are connected between the fixing plate and the top plate, and nuts are respectively connected to the supporting screws on the upper and lower sides of the top plate to adjust the upper and lower positions of the top plate.
9. The over-travel measuring device of the circuit breaker according to any one of claims 1 to 3, wherein a fixing structure for fixedly connecting with a housing of the circuit breaker is provided on the top plate so that the top plate supports the circuit breaker.
10. A circuit breaker over-travel measurement system, comprising:
the measuring circuit comprises a power supply and an indicator light, and is connected to a wiring board of the circuit breaker so as to be conducted and light the indicator light when the circuit breaker is switched on, thereby indicating that the circuit breaker is in a just-closed state;
the jacking device is provided with a lifting output end;
the measuring device is the same as the over-travel measuring device of the circuit breaker according to any one of claims 1 to 9.
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| CN202011467375.0A CN112710264B (en) | 2020-12-14 | 2020-12-14 | Circuit breaker overstroke measuring device and circuit breaker overstroke measuring system |
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| CN202011467375.0A CN112710264B (en) | 2020-12-14 | 2020-12-14 | Circuit breaker overstroke measuring device and circuit breaker overstroke measuring system |
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|---|---|
| CN112710264B (en) | 2023-01-31 |
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