CN114659776A - Load simulation platform for spring mechanism defect test and operation method thereof - Google Patents
Load simulation platform for spring mechanism defect test and operation method thereof Download PDFInfo
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- CN114659776A CN114659776A CN202210333688.XA CN202210333688A CN114659776A CN 114659776 A CN114659776 A CN 114659776A CN 202210333688 A CN202210333688 A CN 202210333688A CN 114659776 A CN114659776 A CN 114659776A
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Abstract
The invention discloses a load simulation platform for a spring mechanism defect test and an operation method thereof, wherein the platform comprises: the base frame is used as a fixed supporting base of the load simulation platform; the upright post is fixedly arranged on the underframe; an upper swing arm, a lower swing arm, and a plurality of counterweight links; the upper swing arm and the lower swing arm are rotatably arranged on the upright post, and two ends of each balance weight connecting rod in the balance weight connecting rods are respectively hinged to the upper swing arm and the lower swing arm; one end of the transmission connecting rod is hinged to one end of the upper swing arm, and the other end of the transmission connecting rod is used for being connected with a crank arm of the spring mechanism; the counterweight connecting rod at the end part of the other end of the upper swing arm is fixedly provided with a buffer arm, and the buffer is arranged on the underframe. The invention can simulate the load of the spring mechanism, and the movement characteristic and the load characteristic can highly accord with the movement of the moving contact of the breaker, and has the characteristics of convenience and reliability.
Description
Technical Field
The invention belongs to the technical field of spring mechanism defect tests, and particularly relates to a load simulation platform for a spring mechanism defect test and an operation method thereof.
Background
The spring mechanism (for example and explanation, the spring mechanism is also called as a spring operating mechanism, a spring operating mechanism and the like) is widely applied to a high-voltage circuit breaker and drives a moving contact of an arc extinguish chamber of the circuit breaker to move, so that the opening and closing operation is realized; although the spring mechanisms of high-voltage circuit breakers of different types and models are different in structure, basic functional modules are different. Illustratively, for example, the CT20 spring mechanism is widely applied to various high-voltage switch manufacturers, and research documents about the spring mechanism are also commonly found in industry literature journals, such as the article numbered 1001 and 1609(2012)12-0143-05, which is recorded in the 12 th month 2012 of "high-voltage electrical", and the article named "fault analysis and countermeasure that the high-power CT20 spring mechanism is divided after being closed" and the related fault analysis of the CT20 spring mechanism is recorded.
For the non-contact measurement and the state evaluation of the mechanical characteristics of the high-voltage circuit breaker to develop in a matched manner, a circuit breaker mechanical fault simulation device needs to be built so as to simulate various typical mechanical fault defects and reduce huge cost and experimental risk brought by adopting actual high-voltage circuit breaker experimental research. Because the spring mechanism has very large operation power, if no corresponding load exists, the opening and closing of the mechanism can damage the spring mechanism and possibly cause personal injury; at present, the existing load simulation platform generally adopts hydraulic cylinder load, and has more complex structure and higher cost; in addition, the clamping stagnation working condition of the arc extinguish chamber of the circuit breaker is not well simulated. In view of the above, it is necessary to develop a new load simulation platform to provide the load of the spring mechanism simulation test for the test.
Disclosure of Invention
The invention aims to provide a load simulation platform for a spring mechanism defect test and an operation method thereof, so as to solve one or more of the technical problems. The invention particularly provides a load platform for a defect test of a spring mechanism, which can simulate the load of the spring mechanism, has the characteristics of high motion characteristic and load characteristic according with the motion of a moving contact of a breaker and is convenient and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a load simulation platform for a spring mechanism defect test, which comprises:
the base frame is used as a fixed supporting base of the load simulation platform;
the upright post is fixedly arranged on the underframe;
an upper swing arm, a lower swing arm, and a plurality of counterweight links; the upper swing arm and the lower swing arm are rotatably arranged on the upright post, and two ends of each counterweight connecting rod in the counterweight connecting rods are respectively hinged to the upper swing arm and the lower swing arm; the upper swing arm, the lower swing arm and any two counterweight connecting rods form a parallelogram connecting rod movement mechanism, and counterweight blocks are detachably mounted on the counterweight connecting rods;
one end of the transmission connecting rod is hinged to one end of the upper swing arm, the other end of the transmission connecting rod is used for being connected with a crank arm of the spring mechanism, and the balance weight connecting rod can move in the vertical direction under the driving of the spring mechanism; the counterweight connecting rod at the end part of the other end of the upper swing arm is fixedly provided with the buffer arm, the buffer is arranged on the underframe, and the buffer arm is matched with the buffer to adjust buffer force and buffer stroke.
The invention is further improved in that the specific structure that one end of the transmission connecting rod is hinged with one end of the upper swing arm is as follows: and one end of the upper swing arm is provided with two oppositely arranged chucks, the transmission connecting rod is connected between the two chucks through a pin shaft, and the two chucks are clamped by a clamp with adjustable clamping force.
The invention further improves the method and also comprises the following steps: and the linear displacement sensor is arranged on the counterweight connecting rod or the counterweight block.
The invention is further improved in that the method also comprises the following steps: and the angular displacement sensor is arranged on the upper swing arm or the lower swing arm.
A further development of the invention consists in that the position of the damper relative to the damping arm is adjustably arranged; the part of the buffer arm used for smashing and pressing the buffer is provided with an arc surface.
The invention is further improved in that the buffer is a spring-type buffer.
The invention is further improved in that the end of the upper swing arm provided with the transmission link is also provided with a connecting pin for connecting an auxiliary switch link mechanism of the spring mechanism.
The invention further improves the method and also comprises the following steps: and the protective cover is used for protecting the load simulation platform.
A further development of the invention is that the chassis is provided with a connection mechanism for fixedly mounting the spring mechanism.
The invention provides an operation method of a load simulation platform for a spring mechanism defect test, which comprises the following steps:
the load motion quality is adjusted by adjusting the balancing weight so as to simulate the change of the mechanical characteristics of the opening and closing time of the circuit breaker caused by overlarge resistance or eccentricity of the circuit breaker body;
by adjusting the buffer force, the buffer position and the buffer stroke of the buffer, the defect simulation of the mechanism buffer position, the force and the buffer input time after the oil leakage of the buffer is simulated.
Compared with the prior art, the invention has the following beneficial effects:
the load simulation platform for the defect test of the spring mechanism provided by the invention adopts a heavy object counterweight mode as a simulation load, so that the defects of oil leakage and overlarge pneumatic load noise caused by hydraulic load are avoided; in addition, the invention specifically designs a mode of up-and-down movement of the counterweight, highly accords with the movement characteristics of the arc extinguish chamber of the circuit breaker body, and can conveniently carry out a defect simulation test on the spring mechanism of the high-voltage circuit breaker. Specifically, the actual motion of the circuit breaker is the linear displacement opening and closing motion stroke between the moving contact and the static contact, friction exists after the contact, and larger friction force possibly occurs due to clamping stagnation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic overall structural diagram of a load simulation platform for a spring mechanism defect test according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the embodiment provided in FIG. 1;
FIG. 3 is a schematic illustration of the connection of the mast, upper swing arm, lower swing arm, counterweight link, and counterweight structure of the embodiment provided in FIG. 1;
FIG. 4 is a schematic illustration of the connection of the collet, the clamp and the drive link of the upper swing arm of the embodiment of FIG. 1;
in the figure, 1, a chassis; 2. a column; 3. an upper swing arm; 4. a lower swing arm; 5. a counterweight connecting rod; 6. a balancing weight; 7. a transmission connecting rod; 8. a spring mechanism; 9. a crank arm; 10. a buffer arm; 11. a buffer; 12. a connecting pin; 13. a linear displacement sensor; 14. an angular displacement sensor; 15. a circular arc surface; 16. a chuck; 17. a clamping hoop; 18. an auxiliary switch; 19. an upper connecting shaft; 20. a lower connecting shaft; 21. an auxiliary switch link mechanism; 22. a first clamping portion; 23. a second clamping portion; 24. an adjusting screw; 25. a threaded hole; 26. sticking; 27. a card slot; 28. a counterbore.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, an embodiment of the present invention provides a load simulation platform for a defect test of a spring mechanism, which can conveniently perform the defect simulation test on the spring mechanism of a high-voltage circuit breaker; the load simulation platform comprises: the device comprises an underframe 1, wherein two oppositely arranged upright posts 2 are arranged on the underframe 1 (for example, the upright posts 2 and the underframe 1 can be detachably and fixedly connected through bolts); an upper swing arm 3 and a lower swing arm 4 are rotatably connected between the two upright posts 2 through an upper connecting shaft 19 and a lower connecting shaft 20 respectively; a plurality of counterweight connecting rods 5 which are equal in length and parallel to each other are arranged between the upper swing arm 3 and the lower swing arm 4, two ends of each counterweight connecting rod 5 are respectively and rotatably connected to the upper swing arm 3 and the lower swing arm 4, and a plurality of counterweight blocks 6 are detachably connected to each counterweight connecting rod 5; the right end of the upper swing arm 3 is rotatably connected with a transmission connecting rod 7, the transmission connecting rod 7 is used for being connected with a crank arm 9 of a spring mechanism 8, and each balance weight connecting rod 5 can move in the up-and-down direction under the driving of the spring mechanism 8;
the counterweight connecting rod 5 connected with the left ends of the upper swing arm 3 and the lower swing arm 4 is provided with a buffer arm 10 extending towards the left, the left end of the underframe 1 is provided with a buffer 11, and when the counterweight connecting rod 5 moves downwards to a certain position, the buffer arm 10 presses the buffer 11.
The technical scheme of the invention is explained about the invention point, the invention is provided with a crank arm, a connecting rod, a balancing weight, a buffer and a clamping hoop; in addition, the arrangement of the sensor and the measurement of the linear displacement of the crank arm connecting rod and the balancing weight by the sensor determine whether the displacement is consistent with the stroke of the circuit breaker, if the displacement is inconsistent, the operation stroke of the balancing weight can be adjusted by adjusting the angles of the transmission connecting rod and the crank arm; the angular displacement sensor verifies the stroke measured by the linear displacement sensor. Wherein, the weight block has adjustable mass and adjustable stroke; the clamp is used for simulating clamping stagnation, and the buffer is used for simulating the motion end characteristic of the mechanism.
Referring to fig. 1 and 2, in a preferred embodiment of the present invention, a connecting pin 12 for connecting an auxiliary switch link mechanism 21 of the spring mechanism 8 is further disposed at the right end of the upper swing arm 3; the counterweight connecting rod 5 or the counterweight block 6 is also provided with a connector of a linear displacement sensor 13, the upper swing arm 3 or the lower swing arm 4 is also provided with a connector for mounting an angular displacement sensor 14, and the sensor is used for measuring the stroke.
The buffer 11 may be a spring-type buffer, a portion of the buffer arm 10 for hitting the buffer 11 is provided with an arc surface 15, and a position of the buffer 11 relative to the buffer arm 10 is adjustable.
The foundation frame 1 is provided with an interface for mounting foundation bolts, and the right part of the foundation frame is provided with an interface for mounting a spring mechanism 8. Two oppositely arranged chucks 16 are arranged at the right end of the upper swing arm 3, the transmission connecting rod 7 is connected between the two chucks 16 through a pin shaft, and the two chucks 16 are clamped by a clamp 17 with adjustable clamping force.
The embodiment of the invention preferably further comprises a protective cover for covering the simulation platform.
The embodiment of the invention provides a convenient and reliable load platform for a defect simulation test of a spring mechanism, the load of the spring mechanism is simulated by arranging the upper swing arm, the lower swing arm, the counterweight connecting rod, the counterweight block and the buffer between two upright posts of the underframe so as to be used for the test of the spring mechanism, the spring mechanism can drive the counterweight connecting rod and the counterweight block to move up and down through the transmission connecting rod, and the motion characteristic and the load characteristic can highly accord with the motion of a moving contact of a breaker.
According to the load simulation platform for the defect test of the spring mechanism, the load of the spring mechanism is simulated by arranging the upper swing arm, the lower swing arm, the counterweight connecting rod, the counterweight block and the buffer between the two stand columns of the underframe so as to test the spring mechanism, the spring mechanism can drive the counterweight connecting rod and the counterweight block to move up and down through the transmission connecting rod, the movement characteristic and the load characteristic can highly accord with the movement of a moving contact of a breaker, and a convenient and reliable load platform is provided for the defect simulation test of the spring mechanism.
Referring to fig. 1 to 3, in a load simulation platform for a spring mechanism defect test provided in an embodiment of the present invention, 3 vertically disposed counterweight connecting rods 5 are disposed between an upper swing arm 3 and a lower swing arm 4, two ends of each counterweight connecting rod 5 are connected to the upper swing arm 3 and the lower swing arm 4 through pin shafts, each counterweight connecting rod 5 may be connected to a plurality of counterweights 6, the upper swing arm 3, the lower swing arm 4, and the counterweight connecting rods 5 form a parallelogram connecting rod movement mechanism, the upper swing arm 3 is connected between two upright posts 2 through an upper connecting shaft 19, the lower swing arm 4 is connected between the two upright posts 2 through a lower connecting shaft 20, and a distance between the upper connecting shaft 19 and the lower connecting shaft 20 is equal to a distance between the pin shafts at two ends of each counterweight connecting rod 5; therefore, when the spring mechanism 8 drives the upper rotating crank arm 9 to swing up and down through the transmission connecting rod 7, the upper swing arm 3 drives each balance weight connecting rod 5 and the lower swing arm 4 to move, each balance weight connecting rod 5 keeps a vertical state in the moving process, and the moving characteristics of the arc extinguish chamber of the vertical circuit breaker in up-and-down movement are highly met.
Compared with the situation that the traditional spring mechanism running-in platform has large direct-acting load and is inconvenient to adjust, the load simulation platform for the spring mechanism defect test provided by the embodiment of the invention adopts an up-and-down motion mode similar to the load of a high-voltage circuit breaker body, and the counterweight block is detachably connected with the counterweight connecting rod, so that the adjustment is very convenient, and the defects of load increase and the like caused by eccentricity or serious ablation of the high-voltage circuit breaker body can be simulated.
An auxiliary switch 18 is arranged in a spring mechanism 8 of the high-voltage circuit breaker, the auxiliary switch 18 is used for feeding back an on-off state signal of a circuit breaker body to the spring mechanism 8, the auxiliary switch 18 is provided with a link mechanism, the link mechanism is generally connected to a transmission part between the spring mechanism 8 and the circuit breaker body, when the transmission part moves to an on-off state, the link mechanism is driven to move to trigger the on-off signal to components such as an energy storage motor and the like of the spring mechanism 8, as shown in fig. 1-3, a connecting pin 12 used for being connected with the auxiliary switch 18 of the spring mechanism 8 is further arranged at the right end of an upper swing arm 3, and when the upper swing arm 3 rotates, the link mechanism of the auxiliary switch 18 is driven to move, so that the auxiliary switch 18 generates a signal for feeding back the on-off state of the circuit breaker. By replacing moving parts in the linkage of the auxiliary switch 18, high voltage breaker faults/defects caused by defects or defects when the auxiliary switch 18 of the high voltage breaker is not switched in time can be simulated.
In order to conveniently test the mechanical characteristics of the movement of the moving contact of the circuit breaker, the counterweight connecting rod 5 or the counterweight block 6 is also provided with an interface of a linear displacement sensor 13, the linear displacement sensor 13 can be installed on the chassis 1, the detection end of the linear displacement sensor 13 is connected to the counterweight connecting rod 5 or the counterweight block 6 to test the linear displacement of the movement of the spring mechanism 8 output to the moving contact of the circuit breaker, and when the test is carried out, the linear displacement of the counterweight connecting rod and the counterweight block is consistent with the displacement of an arc extinguish chamber of the circuit breaker by adjusting the angles of a transmission connecting rod and a connecting lever, so that the mechanical characteristics of the movement of the moving contact of the circuit breaker are accurately simulated. Fig. 1 shows a case that a linear displacement sensor 13 is connected with a counterweight 6, and an interface for mounting an angular displacement sensor 14 is further arranged on the upper swing arm 3 or the lower swing arm 4, and can be used for testing the angular displacement output by the operating mechanism, so as to verify the output angular displacement of the operating mechanism. The linear displacement sensor 13 and the angular displacement sensor 14 can be arranged to facilitate the study of the influence of the mechanism defect on the mechanical characteristics and the like measured in the traditional measuring mode.
In the load simulation platform for the spring mechanism defect test provided by the embodiment of the invention, the buffer 11 is arranged on the bottom frame 1, the buffer 11 is detachably connected with the bottom frame 1, and the buffer 11 can be conveniently replaced according to needs to adjust the buffer force and the buffer stroke, so that the platform has a function of simulating the defects of the spring mechanism buffer 11. As a preferred embodiment, as shown in fig. 1 and fig. 3, the buffer 11 is a spring-type buffer 11, and a portion of the buffer arm 10 for hitting the buffer 11 is provided with an arc surface 15, so that the buffer arm 10 and the buffer 11 rub each other smoothly in the contact process, the motion characteristic of the tail end of the moving contact of the circuit breaker can be simulated well, and the moving part can be prevented from being damaged due to the over-travel motion. In order to simulate the movement stroke and the movement characteristic of different types of circuit breakers, the position of the buffer 11 relative to the buffer arm 10 can be adjusted.
Since the operation function of the spring mechanism 8 is very large, in order to prevent the situation that the parts are accidentally broken out during the test, the load simulation platform for the spring mechanism defect test of the invention further comprises a protective cover (not shown in the figure) for covering the simulation platform. Can produce great vibrations during the operation of spring mechanism 8, for make the simulation platform firm and play better shock attenuation effect betterly, chassis 1 is high strength chassis 1 that forms by the welding of H shaped steel, difficult emergence in 8 divide-shut brake operation processes of spring mechanism topples, be equipped with the interface that is used for installing rag bolt on chassis 1, this simulation platform transports to laboratory or target test place back, and the accessible is fixed chassis 1 in forms such as local pre-buried cement pile in test place, pre-buried steel guide rail, also can take and beat expansion bolts's mode at ground drilling, fixes simulation platform's chassis 1 and ground. The right part of the bottom frame 1 is provided with an interface for installing a spring mechanism 8, and the spring mechanism 8 is fixed on the right part of the bottom frame 1 through a high-strength bolt.
In order to simulate the friction clamping phenomenon during the operation of the arc extinguish chamber of the circuit breaker, as shown in fig. 1, 2 and 4, two oppositely arranged chucks 16 are arranged at the right end of the upper swing arm 3, the transmission link 7 is connected between the two chucks 16 through a pin shaft, the two chucks 16 are clamped by a clamp 17 with adjustable clamping force, the clamp 17 is provided with two oppositely arranged first clamping part 22 and second clamping part 23, the first clamping part 22 and the second clamping part 23 are respectively clamped at the outer sides of the two chucks 16 of the upper swing arm 3, a threaded hole 25 is arranged on the first clamping part 22, an adjusting bolt 24 is screwed in the threaded hole 25, the first clamping part 22 and the second clamping part 23 can be relatively clamped by screwing the adjusting bolt 24, the first clamping part 22 and the second clamping part 23 can be relatively loosened by loosening the adjusting bolt 24, the clamping force of the clamp 17 can be adjusted by the adjusting bolt 24, when the situation that the clamping stagnation friction of the circuit breaker is large needs to be simulated, the clamping force of the clamp 17 is adjusted to be large, so that the clamp 17 clamps the chuck 16, the chuck 16 clamps the transmission connecting rod 7, large clamping stagnation friction is generated between the transmission connecting rod 7 and the chuck 16, and the clamping force of the clamp 17 is adjusted according to the clamping stagnation friction force needing to be simulated. Since the operating power of the spring mechanism 8 is very large, the speed of the spring mechanism driving the upper swing arm to move is very high, and when the clamping of the clamping band 17 simulates the circuit breaker clamping stagnation friction, the clamping force of the clamping band 17 needs to be adjusted, the clamping force of the clamping band 17 may be adjusted to be small, if the clamping force of the clamping band 17 is not large enough or loosened accidentally, a dangerous situation that the clamping band 17 falls off and flies easily occurs, in order to prevent the dangerous situation, as shown in fig. 4, a counter bore 28 is arranged on the first clamping portion 22, the end of the adjusting bolt 24 extends into the counter bore 28 and is pressed at the bottom of the counter bore 28, a clamping protrusion 26 is arranged on the second clamping portion 23, a clamping groove 27 is arranged on the outer side surface of the chuck 16 pressed by the second clamping portion 23 on the upper swing arm 3, and the clamping protrusion 26 is clamped in the clamping groove 27, so that even if the clamping force of the clamping band 17 is small or even the clamping band is loosened, the clamp 17 will not disengage from the upper swing arm 3 as long as the end of the adjustment bolt 24 is retained in the counterbore 28 and the snap 26 is retained in the snap groove 27. Therefore, the clamping force of the clamp 17 can be conveniently adjusted to simulate clamping stagnation forces of different sizes, and the safety of equipment and personnel can be reliably ensured.
In the embodiment of the invention, when the load simulation platform for the defect test of the spring mechanism is used for carrying out the defect simulation test on the spring mechanism, the spring mechanism to be tested is arranged on the bottom frame and is connected with the transmission connecting rod, and then the simulation can be realized by adjusting related components to the defect state, and the defect simulation type and related monitoring and measuring functions which are mainly realized comprise:
(1) the defect of the failure of the circuit breaker caused by the defect of the electromagnet is simulated by adjusting the parameters such as the oversize or undersize gap between the opening electromagnet and the opening pawl of the spring mechanism, the stroke of the electromagnet and the like, so that the simulation of a plurality of gap defects of the mechanism can be realized;
(2) the load motion quality is adjusted by adjusting the balancing weight to simulate the change of mechanical characteristics such as the opening and closing time of the circuit breaker caused by overlarge resistance or eccentricity of the circuit breaker body, so that possible failure of action rejection is caused;
(3) simulating the defect simulation of the buffer position, the force, the buffer input time and the like after simulating the oil leakage of the buffer by adjusting the buffer force, the buffer position and the buffer stroke of the buffer;
(4) the auxiliary switch of the spring mechanism or related parts in the link mechanism connected with the auxiliary switch are replaced to simulate the fault/defect of the high-voltage circuit breaker caused by the defect of the auxiliary switch of the high-voltage circuit breaker or the defect of untimely switching;
(5) by adjusting the sizes and the matching relation of related parts in the spring mechanism, the defects that the spring mechanism is closed and then opened (closing and opening are only given, but the spring mechanism completes closing and opening commands) and closing/opening/closing operation and closing/opening refusing defects of single closing/single opening are simulated;
(6) the defect of fatigue of the opening and closing spring of the spring mechanism is simulated by adjusting the opening and closing spring and the bearing part thereof in the spring mechanism, and the defect can cause the mechanical characteristic of the spring mechanism to change or fail to move;
(7) under various defect conditions of the spring mechanism, the measured mechanical characteristics of the conventional angular displacement sensor and the linear displacement sensor are compared with the mechanical characteristics under non-contact measurement modes such as laser vibration, laser displacement, visual measurement and the like;
(8) and (3) acquiring and analyzing physical information such as contact type mechanical vibration, non-contact type sound characteristics and the like of the spring mechanism under various defect conditions.
It should be noted that, regarding the specific structure of the spring mechanism, the designs of different models and different manufacturers are different, but the functions that the spring mechanism can achieve are all basically the same, and the related functional modules and even the structures are relatively similar, the related structures and related functions of the spring mechanism itself involved in the present application are well known to those skilled in the art, and the specific structures cannot be detailed one by one, and therefore, they are not described in detail.
In summary, the load simulation platform for the spring mechanism defect test provided by the embodiment of the invention adopts a heavy object counterweight mode as a simulation load, so that the defects of oil leakage and too high pneumatic load noise caused by hydraulic load are overcome. The invention effectively overcomes various defects in the prior art and has high industrial utilization value.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A load simulation platform for a spring mechanism defect test is characterized by comprising:
the base frame (1) is used as a fixed supporting base of the load simulation platform;
the upright post (2), the upright post (2) is fixedly arranged on the underframe (1);
an upper swing arm (3), a lower swing arm (4) and a plurality of counterweight connecting rods (5); the upper swing arm (3) and the lower swing arm (4) are rotatably arranged on the upright post (2), and two ends of each counterweight connecting rod (5) in the counterweight connecting rods (5) are respectively hinged to the upper swing arm (3) and the lower swing arm (4); the upper swing arm (3), the lower swing arm (4) and any two counterweight connecting rods (5) form a parallelogram connecting rod movement mechanism, and counterweight blocks (6) are detachably mounted on the counterweight connecting rods (5);
the buffer mechanism comprises a transmission connecting rod (7), a buffer arm (10) and a buffer (11), wherein one end of the transmission connecting rod (7) is hinged to one end of the upper swing arm (3), the other end of the transmission connecting rod (7) is used for being connected with a crank arm of a spring mechanism, and a counterweight connecting rod (5) can move in the vertical direction under the driving of the spring mechanism; the counterweight connecting rod (5) at the end part of the other end of the upper swing arm (3) is fixedly provided with the buffer arm (10), the buffer (11) is arranged on the underframe (1), and the buffer arm (10) and the buffer (11) are matched to adjust buffer force and buffer stroke.
2. The load simulation platform for the spring mechanism defect test according to claim 1, wherein one end of the transmission connecting rod (7) is hinged to one end of the upper swing arm (3) by the specific structure: one end of the upper swing arm (3) is provided with two oppositely arranged chucks (16), the transmission connecting rod (7) is connected between the two chucks (16) through a pin shaft, and the two chucks (16) are clamped by a clamp (17) with adjustable clamping force.
3. The load simulation platform for the spring mechanism defect test as claimed in claim 1, further comprising:
the linear displacement sensor (13), linear displacement sensor (13) set up in counter weight connecting rod (5) or on balancing weight (6).
4. The load simulation platform for the spring mechanism defect test as claimed in claim 3, further comprising:
an angular displacement sensor (14), wherein the angular displacement sensor (14) is arranged on the upper swing arm (3) or the lower swing arm (4).
5. A load simulation platform for spring mechanism defect testing according to claim 1, characterized in that the position of the buffer (11) relative to the buffer arm (10) is adjustably arranged; the part of the buffer arm (10) used for smashing and pressing the buffer (11) is provided with an arc surface (15).
6. The load simulation platform for the spring mechanism defect test of claim 1, wherein the buffer (11) is a spring type buffer.
7. The load simulation platform for the spring mechanism defect test is characterized in that one end of the upper swing arm (3) provided with the transmission connecting rod (7) is also provided with a connecting pin (12) for connecting an auxiliary switch connecting rod mechanism of the spring mechanism.
8. The load simulation platform for the spring mechanism defect test as claimed in claim 1, further comprising:
and the protective cover is used for protecting the load simulation platform.
9. The load simulation platform for the spring mechanism defect test is characterized in that the base frame (1) is provided with a connecting mechanism for fixedly mounting the spring mechanism.
10. The operation method of the load simulation platform for the spring mechanism defect test, which is characterized by comprising the following steps:
the load motion quality is adjusted by adjusting the balancing weight (6) so as to simulate the change of the mechanical characteristics of the opening and closing time of the circuit breaker caused by overlarge resistance or eccentricity of the circuit breaker body;
the size of the buffering force, the position of the buffer and the buffering stroke of the buffer (11) are adjusted to simulate the defect simulation of the buffering position, the force size and the buffering input time of the mechanism after the oil leakage of the buffer.
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| CN202210333688.XA CN114659776B (en) | 2022-03-31 | 2022-03-31 | Load simulation platform for spring mechanism defect test and operation method thereof |
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| CN202210333688.XA CN114659776B (en) | 2022-03-31 | 2022-03-31 | Load simulation platform for spring mechanism defect test and operation method thereof |
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| CN114659776B CN114659776B (en) | 2023-10-13 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006184158A (en) * | 2004-12-28 | 2006-07-13 | Kayaba Ind Co Ltd | Testing apparatus and testing process |
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